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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Bach, Vanessa;

    Ressourcen stellen die Basis für eine erfolgreiche industrielle und technologische Entwicklung dar und somit auch für den Wohlstand heutiger und zukünftiger Generationen. Mit steigender Ressourcennutzung nehmen auch die (physische und sozio-ökonomische) Verfügbarkeit abiotischer und biotischer Ressourcen, die Umweltverschmutzung und die sozialen Auswirkungen durch den Abbau und Nutzung der Ressourcen zu. Um den Erfolg implementierter Strategien (und deren Maßnahmen) hinsichtlich ihres Beitrags zu einem effizienten und nachhaltigen Umgang mit Ressourcen zu bewerten, bedarf es an entsprechenden Bewertungsmethoden. Diese Dissertation stellt vier Methoden bereit um die Bewertung abiotischer und biotischer Ressourcennutzung im Kontext der Nachhaltigkeit auf Produkt- und regionaler Ebene in konsistenter Weise zu bewerten. Die Methode zur Bewertung abiotischer Ressourcen auf Produktebene betrachtet insgesamt 21 relevante Aspekte und stellt Indikatoren zur Quantifizierung bereit. Für die Bewertung der sozio-ökonomischen Einschränkungen von Lieferketten ist eine neuer Ansatz entwickelt, der geopolitische, politische und regulative Aspekte berücksichtigt. Des Weiteren sind Screening-Indikatoren verfügbar, die die gesellschaftliche Akzeptanz der Ressourcennutzung adressieren. Um die Verfügbarkeit terrestrischer biotischer Ressourcen in Produktsystemen zu bewerten, wurde eine umfassende Methode mit 25 Indikatoren erstellt. Des Weiteren wird ein Ansatz vorgestellt, der es ermöglicht eine konsistente Zusammenführung und somit auch Bewertung verschiedener Ressourcentypen zu ermöglichen. Er findet bei der Zusammenführung der entwickelten Methoden zur Bewertung abiotischer und biotischer Ressourcen Anwendung. Da die Nutzung von Ressourcen auch auf Macro-Ebene betrachtet werden muss, wurde eine Methode zur Bewertung abiotischer Ressourcen auf regionaler Ebene entwickelt, die 25 Indikatoren für die Bewertung der Kritikalität (Verfügbarkeit von Ressourcen und Vulnerabilität der Region) und der gesellschaftlichen Akzeptanz zur Verfügung stellt. Verschiedene Fallstudien wurden durchgeführt um die Anwendbarkeit der entwickelten Methoden aufzuzeigen und zu verdeutlichen, warum eine umfassende Bewertung der Ressourcennutzung notwendig ist. Die Fallstudien umfassen u.a. die Bewertung eines Smartphones, Pkw-Herstellung und Biokraftstoffe. Die Anwendbarkeit der Methoden wird zudem erhöht, indem Indikatorwerte für 36 Metalle und 4 fossile Rohstoffe zur Verfügung gestellt werden. Die Bewertung der Nutzung abiotischer und biotischer Ressourcen auf Produkt- und regionaler Ebene wird mit dieser Dissertation signifikant verbessert, indem vier wissenschaftliche Methoden zur robusten und umfassenden Bewertung aller drei Nachhaltigkeitsdimensionen bereitgestellt werden. Resources are the basis for a thriving industrial and technological development and therefore for prosperity of present and future generations. With increasing resource use, challenges with regard to (physical and socio-economic) availability of abiotic and biotic resources and raw materials, pollution of the environment as well as social impacts associated with resource extraction and use arise. To evaluate the success of strategies managing resource use more efficiently and sustainably methodologies are required to comprehensively assess resource use and related impacts. This thesis provides four methodologies to improve the assessment of abiotic and biotic resource use in the context of sustainability on product and regional level. For the method to assess abiotic resources use on product level overall 21 aspects are considered as relevant and indicator for quantification are provided. In order to determine socio-economic supply chain restrictions a new approach is developed, considering geopolitical, political and regulatory aspects affecting resource extraction and use. Further, screening indicators are established to evaluate the societal acceptance of resources with regard to compliance with social and environmental standards. To assess the availability of terrestrial biotic resources in product systems a comprehensive methodology is established, which includes 25 indicators. Further, an approach is proposed to combine assessment methodologies in a consistent way. This approach is applied to the developed method of this thesis leading to a combined methodology. The use of resources also has to be considered on macro-economic. Thus, a methodology is developed providing 25 indicators for the two dimensions criticality, consisting of the sub-dimensions (physical and socio-economic) availability and vulnerability, as well as societal acceptance. Several case studies are carried out to demonstrate the applicability of the developed methods and to confirm the need for a comprehensive assess of resource use on micro and macro level, e.g. case studies for smart phones and cars, for biofuels produced from rapeseed and soybean. The applicability of the methodologies is further enhanced by providing indicator results for 36 metals and four fossil raw materials. The assessment of abiotic and biotic resource use on product and regional level is improved significantly by establishing four scientifically robust yet applicable methodologies, which consider multiple aspects of resource use in all three sustainability dimensions.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DepositOncearrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DepositOncearrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      Doctoral thesis . 2018
      Data sources: DepositOnce
      https://dx.doi.org/10.14279/de...
      Doctoral thesis . 2018
      Data sources: Datacite
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Bach, Vanessa;

    Ressourcen stellen die Basis für eine erfolgreiche industrielle und technologische Entwicklung dar und somit auch für den Wohlstand heutiger und zukünftiger Generationen. Mit steigender Ressourcennutzung nehmen auch die (physische und sozio-ökonomische) Verfügbarkeit abiotischer und biotischer Ressourcen, die Umweltverschmutzung und die sozialen Auswirkungen durch den Abbau und Nutzung der Ressourcen zu. Um den Erfolg implementierter Strategien (und deren Maßnahmen) hinsichtlich ihres Beitrags zu einem effizienten und nachhaltigen Umgang mit Ressourcen zu bewerten, bedarf es an entsprechenden Bewertungsmethoden. Diese Dissertation stellt vier Methoden bereit um die Bewertung abiotischer und biotischer Ressourcennutzung im Kontext der Nachhaltigkeit auf Produkt- und regionaler Ebene in konsistenter Weise zu bewerten. Die Methode zur Bewertung abiotischer Ressourcen auf Produktebene betrachtet insgesamt 21 relevante Aspekte und stellt Indikatoren zur Quantifizierung bereit. Für die Bewertung der sozio-ökonomischen Einschränkungen von Lieferketten ist eine neuer Ansatz entwickelt, der geopolitische, politische und regulative Aspekte berücksichtigt. Des Weiteren sind Screening-Indikatoren verfügbar, die die gesellschaftliche Akzeptanz der Ressourcennutzung adressieren. Um die Verfügbarkeit terrestrischer biotischer Ressourcen in Produktsystemen zu bewerten, wurde eine umfassende Methode mit 25 Indikatoren erstellt. Des Weiteren wird ein Ansatz vorgestellt, der es ermöglicht eine konsistente Zusammenführung und somit auch Bewertung verschiedener Ressourcentypen zu ermöglichen. Er findet bei der Zusammenführung der entwickelten Methoden zur Bewertung abiotischer und biotischer Ressourcen Anwendung. Da die Nutzung von Ressourcen auch auf Macro-Ebene betrachtet werden muss, wurde eine Methode zur Bewertung abiotischer Ressourcen auf regionaler Ebene entwickelt, die 25 Indikatoren für die Bewertung der Kritikalität (Verfügbarkeit von Ressourcen und Vulnerabilität der Region) und der gesellschaftlichen Akzeptanz zur Verfügung stellt. Verschiedene Fallstudien wurden durchgeführt um die Anwendbarkeit der entwickelten Methoden aufzuzeigen und zu verdeutlichen, warum eine umfassende Bewertung der Ressourcennutzung notwendig ist. Die Fallstudien umfassen u.a. die Bewertung eines Smartphones, Pkw-Herstellung und Biokraftstoffe. Die Anwendbarkeit der Methoden wird zudem erhöht, indem Indikatorwerte für 36 Metalle und 4 fossile Rohstoffe zur Verfügung gestellt werden. Die Bewertung der Nutzung abiotischer und biotischer Ressourcen auf Produkt- und regionaler Ebene wird mit dieser Dissertation signifikant verbessert, indem vier wissenschaftliche Methoden zur robusten und umfassenden Bewertung aller drei Nachhaltigkeitsdimensionen bereitgestellt werden. Resources are the basis for a thriving industrial and technological development and therefore for prosperity of present and future generations. With increasing resource use, challenges with regard to (physical and socio-economic) availability of abiotic and biotic resources and raw materials, pollution of the environment as well as social impacts associated with resource extraction and use arise. To evaluate the success of strategies managing resource use more efficiently and sustainably methodologies are required to comprehensively assess resource use and related impacts. This thesis provides four methodologies to improve the assessment of abiotic and biotic resource use in the context of sustainability on product and regional level. For the method to assess abiotic resources use on product level overall 21 aspects are considered as relevant and indicator for quantification are provided. In order to determine socio-economic supply chain restrictions a new approach is developed, considering geopolitical, political and regulatory aspects affecting resource extraction and use. Further, screening indicators are established to evaluate the societal acceptance of resources with regard to compliance with social and environmental standards. To assess the availability of terrestrial biotic resources in product systems a comprehensive methodology is established, which includes 25 indicators. Further, an approach is proposed to combine assessment methodologies in a consistent way. This approach is applied to the developed method of this thesis leading to a combined methodology. The use of resources also has to be considered on macro-economic. Thus, a methodology is developed providing 25 indicators for the two dimensions criticality, consisting of the sub-dimensions (physical and socio-economic) availability and vulnerability, as well as societal acceptance. Several case studies are carried out to demonstrate the applicability of the developed methods and to confirm the need for a comprehensive assess of resource use on micro and macro level, e.g. case studies for smart phones and cars, for biofuels produced from rapeseed and soybean. The applicability of the methodologies is further enhanced by providing indicator results for 36 metals and four fossil raw materials. The assessment of abiotic and biotic resource use on product and regional level is improved significantly by establishing four scientifically robust yet applicable methodologies, which consider multiple aspects of resource use in all three sustainability dimensions.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DepositOncearrow_drop_down
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    Doctoral thesis . 2018
    Data sources: DepositOnce
    https://dx.doi.org/10.14279/de...
    Doctoral thesis . 2018
    Data sources: Datacite
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DepositOncearrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      Doctoral thesis . 2018
      Data sources: DepositOnce
      https://dx.doi.org/10.14279/de...
      Doctoral thesis . 2018
      Data sources: Datacite
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Zhukova, V.; Pakhlova, G.; Babu, V.; Park, C. W.; +151 Authors

    We report a new measurement of the exclusive $e^+ e^- \to D^{(*) \pm} D^{*\mp}$ cross sections as a function of the center-of-mass energy from the $D^{(*) \pm} D^{* \mp}$ threshold through $\sqrt{s}=6.0$ GeV with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of $951$ fb$^{-1}$. The accuracy of the cross section measurement is increased by a factor of two over the first Belle study. We perform the first angular analysis of the $e^+ e^- \to D^{* \pm} D^{* \mp}$ process and decompose this exclusive cross section into three components corresponding to the $D^*$ helicities.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DESY Publication Dat...arrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DESY Publication Dat...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Zhukova, V.; Pakhlova, G.; Babu, V.; Park, C. W.; +151 Authors

    We report a new measurement of the exclusive $e^+ e^- \to D^{(*) \pm} D^{*\mp}$ cross sections as a function of the center-of-mass energy from the $D^{(*) \pm} D^{* \mp}$ threshold through $\sqrt{s}=6.0$ GeV with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of $951$ fb$^{-1}$. The accuracy of the cross section measurement is increased by a factor of two over the first Belle study. We perform the first angular analysis of the $e^+ e^- \to D^{* \pm} D^{* \mp}$ process and decompose this exclusive cross section into three components corresponding to the $D^*$ helicities.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DESY Publication Dat...arrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DESY Publication Dat...arrow_drop_down
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Tahnee María; González Martínez;

    Die Metropolregion Santiago (MRS) verzeichnete in den letzten Jahren ein großes Bevölkerungswachstum und einen Anstieg des Lebensstandards. Als Folge davon hat sich das Aufkommen von Siedlungsabfällen fast innerhalb von 10 Jahren verdoppelt. Die Daten für den aktuellen Zustand des Abfallmanagements wurden durch Feldforschungen, Fragebögen, Feldbesuche und durch eine systematische Auswertung von bereits vorliegender Literatur erhoben. Das integrative Nachhaltigkeitskonzept der Helmholtz-Gemeinschaft diente als konzeptioneller Rahmen für die Studie. Zur Bewertung des aktuellen Zustands des Abfallmanagements wurden Nachhaltigkeitsindikatoren identifiziert, deren aktuelle Werte bestimmt und Zielwerte festgelegt. Die Nachhaltigkeitsanalyse zeigt, dass die größten Defizite darin liegen, dass nahezu die gesamte Abfallmenge ohne jegliche Vorbehandlung deponiert wird. Damit verbunden sind lang andauernde Emissionen von Treibhausgasen. Um herauszufinden, wie der informelle Sektor im Abfallmanagement zur Nachhaltigkeit beiträgt, wurden veröffentlichten Erfahrungen mit informellen Müllsammlern in Lateinamerika analysiert. Dabei wurden die entsprechenden Akteure sowie etablierte Allianzen zwischen diesen Akteuren identifiziert. Schlüsselfaktoren für ein nachhaltiges Abfallmanagement unter Einbeziehung des informellen Sektors sind die Legalisierung der Schattenwirtschaft und feste Verträge mit Partnerunternehmen. Relevante Akteure für die Gestaltung der Arbeitsbedingungen des informellen Sektors sind Vertreter privater und öffentlicher Unternehmen, einzelne gesellschaftliche Gruppen sowie Vertreter von Nichtregierungsorganisationen. Schließlich wurden drei explorative Szenarien für das Bezugsjahr 2030 entwickelt: Business as Usual (BAU), Collective Responsibility (CR) und Market Individualism (MI). Das BAU-Szenario enthält eine getrennte Sammlung von Bioabfall und von Wertstoffen; hervorgerufen durch einen verstärkten Organisationsgrad der informellen Müllsammler und den Ausbau von Bring-Systemen. Die Errichtung mechanischer Sortierungsanlagen trägt zur Verwertung der Materialien und zum Recycling bei. Das entstehende Deponiegas und Biogas wird als erneuerbare Energiequelle genutzt. Das CR-Szenario enthält eine getrennte Sammlung von Bioabfall und Wertstoffen. Dies wird erreicht durch eine verstärkte Zusammenarbeit mit den jetzt organisierten Müllsammlern und durch den Ausbau von Bring-Systemen. Mechanische Sortierungsanlagen tragen zur Verwertung von Materialien und zum Recycling bei. Durch Abtrennung einer heizwertreichen Fraktion in mechanisch biologischen Anlagen werden Sekundärbrennstoffe produziert. Darüber hinaus werden, das entstehende Deponiegas sowie das in Vergärungsanlagen erzeugte Biogas energetisch genutzt. Im MI-Szenario sind Wiederverwertungsstrategien von untergeordneter Bedeutung. Es gibt kein Interesse an einer Zusammenarbeit mit den informellen Müllsammlern und keine Anreize für einen verstärkten Organisationsgrad in diesem Bereich. Deshalb bleibt die Branche weitgehend informell. Technologische Entwicklungen in diesem Szenario enthalten die mechanische Sortierung von gemischtem Abfall und die energetische Verwertung von Deponiegas. Die Ergebnisse zeigten, dass das Pro-Kopf-Aufkommen an Siedlungsabfällen im Jahr 2030 in allen Szenarien deutlich höher als im Jahr 2007 ist und der festgelegte Zielwert von 1,6 kg/Kopf/Tag nicht erreicht wurde. Den höchsten Wert (2,0 kg/Kopf/Tag) weist das MI-Szenario auf, der niedrigste Wert (1,8 kg/Kopf/Tag) wurde im CR-Szenario gefunden. Eine Vorbehandlung der gesammelten gemischten Siedlungsabfälle findet nur im CR-Szenario statt, der entsprechende Wert beträgt 18 %, der Zielwert wird damit nicht erreicht. Die höchsten Treibhausgasemissionen treten im MI-Szenario (295 kg CO2-eq/Kopf/Jahr) auf, den niedrigsten Wert (155 kg CO2-eq/Kopf/Jahr) findet man im CR-Szenario. All diese Werte sind, verglichen mit dem festgelegten Zielwert von 71 kg/Kopf/Jahr, deutlich zu hoch. Der Zielwert für die Wiederverwertungsquote wurde im CR-Szenario erreicht (43 %), den niedrigsten Wert zeigt das MI-Szenario (20 %). Die Zielwerte für das Einkommen der Müllsammler wurden im CR-Szenario erreicht (128 %). Im MI-Szenario beträgt dieser Wert lediglich 51 %. Die Kosten für das Abfallmanagement im Verhältnis zum Bruttoinlandsprodukt sinken in den drei Szenarien. Aus den Ergebnissen lässt sich ableiten, dass ein Einbeziehen von mehreren Faktoren erforderlich ist, um die Nachhaltigkeit des Abfallmanagementsystems in den drei Szenarien zu steigern und dass es von wesentlicher Bedeutung ist, schon vorhandene und gut funktionierende Subsysteme, wie das der informellen Müllsammler, zu nutzen und zu stärken. Ebenso ist die Umsetzung robuster Behandlungstechnologien, die einen Beitrag zur Reduktion negativer Umweltauswirkungen leisten, zu forcieren. Diese Technologien sollten preiswert sein, um ihren Einsatz auch unter wirtschaftlich vertretbaren Gesichtspunkten zu ermöglichen. The Metropolitan Region of Santiago (MRS) has experienced a large growth in population in recent years and a rise in the standard of living. Therefore, its municipal solid waste (MSW) has almost doubled in 10 years. Data about the current situation of MSW management in MRS were collected during field research, interviews, field visits and by a systematic evaluation of existing documentary literature. The Integrative Sustainability Concept of the Helmholtz Association provided a conceptual framework for the study. The sustainability analysis showed that the largest deficits are in the current amount of MSW deposited at sanitary landfills without any pre-treatment, and the emission values of greenhouse gases associated with waste treatment and final disposal. To find out if and how the informal waste sector contributes to sustainability, experiences of organization of informal primary collectors in Latin America were analyzed. The key factors which have an influence on their working conditions were identified. These factors include the existence of a legal framework for the informal waste sector; the existence of alliances with production companies guaranteeing a reliable industrial market for secondary raw materials and expansion of activities beyond collection of recyclables. Key stakeholders included people from the public and the private sector, from the civil society and from NGOs. Three explorative scenarios were developed for the year 2030: Business as Usual (BAU), Collective Responsibility (CR), and Market Individualism (MI). Waste generation, waste composition and different practices of waste collection, recovery and treatment were taken into account for the scenarios formulation. The BAU scenario incorporated separate collection of biowaste, recyclable materials with some participation of organized primary collectors and an expansion of drop-off systems. The mechanical sorting of mixed waste was introduced. The utilization of landfill gas as an energy source was promoted and the production of biogas in anaerobic digestion plants was implemented. The CR scenario incorporated separate collection of biowaste, commitment to work together with the primary waste collectors and an expansion of drop-off systems. The mechanical and mechanical biological treatment of mixed waste was introduced. The utilization of landfill gas as an energy source is promoted and the production of biogas in anaerobic digestion plants was implemented. In the MI separate collection of biowaste and recyclable materials was irrelevant. An organization of the informal primary collectors did not take place. Mechanical sorting of mixed waste was introduced. Utilization of landfill gas as an energy source was promoted. The results showed that the generation flux of MSW is at least 50% larger in all scenarios in 2030 compared to the year 2007, exceeding the limit value proposed. The highest value (2.0 kg/(person•day) is obtained in the MI scenario, and the lowest (1.8 kg/(person•day)) in the CR scenario. Pre-treatment of mixed MSW collected is only achieved in the CR scenario with a value of 18%, however, the target value is not achieved. The highest greenhouse gas emission value is obtained in the MI scenario with 295 kg CO2eq/(person•year), the lowest value of 155 kg CO2-eq/(person•year) is obtained in the CR scenario; a value that is still very high in comparison with the suggested target. The largest recycling rate is obtained in the CR scenario (43%), which is better than the target value proposed, the lowest recycling rate is obtained in the MI scenario (20%). The income of primary collectors in comparison with the income of one individual household is improved significantly in the CR scenario (128%), in the MI scenario, earnings of primary collectors decreased to 51%. The share of GDP spent on MSW management is lower in 2030, compared to the year 2007, in all scenarios the largest value of 0.17% is obtained in the CR scenario, and the lowest value of 0.14% is obtained in the MI scenario. The results of the evaluation of the scenarios showed that the largest sustainability deficits are the amount of mixed MSW which undergoes pre-treatment, the greenhouse gas emissions associated to MSW treatment and disposal, as well as the share of GDP spent on MSW management. The results obtained suggested that an integration of several factors is required to increase sustainability. It is essential to strengthen and take advantage of the subsystems which are working within the waste management system, as in the case of the informal sector. In addition to the implementation of flexible treatment technologies which help to decrease negative environmental impacts. Moreover, the costs of these technologies should be affordable, allowing a better financial management.

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    https://dx.doi.org/10.18419/op...
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    Authors: Tahnee María; González Martínez;

    Die Metropolregion Santiago (MRS) verzeichnete in den letzten Jahren ein großes Bevölkerungswachstum und einen Anstieg des Lebensstandards. Als Folge davon hat sich das Aufkommen von Siedlungsabfällen fast innerhalb von 10 Jahren verdoppelt. Die Daten für den aktuellen Zustand des Abfallmanagements wurden durch Feldforschungen, Fragebögen, Feldbesuche und durch eine systematische Auswertung von bereits vorliegender Literatur erhoben. Das integrative Nachhaltigkeitskonzept der Helmholtz-Gemeinschaft diente als konzeptioneller Rahmen für die Studie. Zur Bewertung des aktuellen Zustands des Abfallmanagements wurden Nachhaltigkeitsindikatoren identifiziert, deren aktuelle Werte bestimmt und Zielwerte festgelegt. Die Nachhaltigkeitsanalyse zeigt, dass die größten Defizite darin liegen, dass nahezu die gesamte Abfallmenge ohne jegliche Vorbehandlung deponiert wird. Damit verbunden sind lang andauernde Emissionen von Treibhausgasen. Um herauszufinden, wie der informelle Sektor im Abfallmanagement zur Nachhaltigkeit beiträgt, wurden veröffentlichten Erfahrungen mit informellen Müllsammlern in Lateinamerika analysiert. Dabei wurden die entsprechenden Akteure sowie etablierte Allianzen zwischen diesen Akteuren identifiziert. Schlüsselfaktoren für ein nachhaltiges Abfallmanagement unter Einbeziehung des informellen Sektors sind die Legalisierung der Schattenwirtschaft und feste Verträge mit Partnerunternehmen. Relevante Akteure für die Gestaltung der Arbeitsbedingungen des informellen Sektors sind Vertreter privater und öffentlicher Unternehmen, einzelne gesellschaftliche Gruppen sowie Vertreter von Nichtregierungsorganisationen. Schließlich wurden drei explorative Szenarien für das Bezugsjahr 2030 entwickelt: Business as Usual (BAU), Collective Responsibility (CR) und Market Individualism (MI). Das BAU-Szenario enthält eine getrennte Sammlung von Bioabfall und von Wertstoffen; hervorgerufen durch einen verstärkten Organisationsgrad der informellen Müllsammler und den Ausbau von Bring-Systemen. Die Errichtung mechanischer Sortierungsanlagen trägt zur Verwertung der Materialien und zum Recycling bei. Das entstehende Deponiegas und Biogas wird als erneuerbare Energiequelle genutzt. Das CR-Szenario enthält eine getrennte Sammlung von Bioabfall und Wertstoffen. Dies wird erreicht durch eine verstärkte Zusammenarbeit mit den jetzt organisierten Müllsammlern und durch den Ausbau von Bring-Systemen. Mechanische Sortierungsanlagen tragen zur Verwertung von Materialien und zum Recycling bei. Durch Abtrennung einer heizwertreichen Fraktion in mechanisch biologischen Anlagen werden Sekundärbrennstoffe produziert. Darüber hinaus werden, das entstehende Deponiegas sowie das in Vergärungsanlagen erzeugte Biogas energetisch genutzt. Im MI-Szenario sind Wiederverwertungsstrategien von untergeordneter Bedeutung. Es gibt kein Interesse an einer Zusammenarbeit mit den informellen Müllsammlern und keine Anreize für einen verstärkten Organisationsgrad in diesem Bereich. Deshalb bleibt die Branche weitgehend informell. Technologische Entwicklungen in diesem Szenario enthalten die mechanische Sortierung von gemischtem Abfall und die energetische Verwertung von Deponiegas. Die Ergebnisse zeigten, dass das Pro-Kopf-Aufkommen an Siedlungsabfällen im Jahr 2030 in allen Szenarien deutlich höher als im Jahr 2007 ist und der festgelegte Zielwert von 1,6 kg/Kopf/Tag nicht erreicht wurde. Den höchsten Wert (2,0 kg/Kopf/Tag) weist das MI-Szenario auf, der niedrigste Wert (1,8 kg/Kopf/Tag) wurde im CR-Szenario gefunden. Eine Vorbehandlung der gesammelten gemischten Siedlungsabfälle findet nur im CR-Szenario statt, der entsprechende Wert beträgt 18 %, der Zielwert wird damit nicht erreicht. Die höchsten Treibhausgasemissionen treten im MI-Szenario (295 kg CO2-eq/Kopf/Jahr) auf, den niedrigsten Wert (155 kg CO2-eq/Kopf/Jahr) findet man im CR-Szenario. All diese Werte sind, verglichen mit dem festgelegten Zielwert von 71 kg/Kopf/Jahr, deutlich zu hoch. Der Zielwert für die Wiederverwertungsquote wurde im CR-Szenario erreicht (43 %), den niedrigsten Wert zeigt das MI-Szenario (20 %). Die Zielwerte für das Einkommen der Müllsammler wurden im CR-Szenario erreicht (128 %). Im MI-Szenario beträgt dieser Wert lediglich 51 %. Die Kosten für das Abfallmanagement im Verhältnis zum Bruttoinlandsprodukt sinken in den drei Szenarien. Aus den Ergebnissen lässt sich ableiten, dass ein Einbeziehen von mehreren Faktoren erforderlich ist, um die Nachhaltigkeit des Abfallmanagementsystems in den drei Szenarien zu steigern und dass es von wesentlicher Bedeutung ist, schon vorhandene und gut funktionierende Subsysteme, wie das der informellen Müllsammler, zu nutzen und zu stärken. Ebenso ist die Umsetzung robuster Behandlungstechnologien, die einen Beitrag zur Reduktion negativer Umweltauswirkungen leisten, zu forcieren. Diese Technologien sollten preiswert sein, um ihren Einsatz auch unter wirtschaftlich vertretbaren Gesichtspunkten zu ermöglichen. The Metropolitan Region of Santiago (MRS) has experienced a large growth in population in recent years and a rise in the standard of living. Therefore, its municipal solid waste (MSW) has almost doubled in 10 years. Data about the current situation of MSW management in MRS were collected during field research, interviews, field visits and by a systematic evaluation of existing documentary literature. The Integrative Sustainability Concept of the Helmholtz Association provided a conceptual framework for the study. The sustainability analysis showed that the largest deficits are in the current amount of MSW deposited at sanitary landfills without any pre-treatment, and the emission values of greenhouse gases associated with waste treatment and final disposal. To find out if and how the informal waste sector contributes to sustainability, experiences of organization of informal primary collectors in Latin America were analyzed. The key factors which have an influence on their working conditions were identified. These factors include the existence of a legal framework for the informal waste sector; the existence of alliances with production companies guaranteeing a reliable industrial market for secondary raw materials and expansion of activities beyond collection of recyclables. Key stakeholders included people from the public and the private sector, from the civil society and from NGOs. Three explorative scenarios were developed for the year 2030: Business as Usual (BAU), Collective Responsibility (CR), and Market Individualism (MI). Waste generation, waste composition and different practices of waste collection, recovery and treatment were taken into account for the scenarios formulation. The BAU scenario incorporated separate collection of biowaste, recyclable materials with some participation of organized primary collectors and an expansion of drop-off systems. The mechanical sorting of mixed waste was introduced. The utilization of landfill gas as an energy source was promoted and the production of biogas in anaerobic digestion plants was implemented. The CR scenario incorporated separate collection of biowaste, commitment to work together with the primary waste collectors and an expansion of drop-off systems. The mechanical and mechanical biological treatment of mixed waste was introduced. The utilization of landfill gas as an energy source is promoted and the production of biogas in anaerobic digestion plants was implemented. In the MI separate collection of biowaste and recyclable materials was irrelevant. An organization of the informal primary collectors did not take place. Mechanical sorting of mixed waste was introduced. Utilization of landfill gas as an energy source was promoted. The results showed that the generation flux of MSW is at least 50% larger in all scenarios in 2030 compared to the year 2007, exceeding the limit value proposed. The highest value (2.0 kg/(person•day) is obtained in the MI scenario, and the lowest (1.8 kg/(person•day)) in the CR scenario. Pre-treatment of mixed MSW collected is only achieved in the CR scenario with a value of 18%, however, the target value is not achieved. The highest greenhouse gas emission value is obtained in the MI scenario with 295 kg CO2eq/(person•year), the lowest value of 155 kg CO2-eq/(person•year) is obtained in the CR scenario; a value that is still very high in comparison with the suggested target. The largest recycling rate is obtained in the CR scenario (43%), which is better than the target value proposed, the lowest recycling rate is obtained in the MI scenario (20%). The income of primary collectors in comparison with the income of one individual household is improved significantly in the CR scenario (128%), in the MI scenario, earnings of primary collectors decreased to 51%. The share of GDP spent on MSW management is lower in 2030, compared to the year 2007, in all scenarios the largest value of 0.17% is obtained in the CR scenario, and the lowest value of 0.14% is obtained in the MI scenario. The results of the evaluation of the scenarios showed that the largest sustainability deficits are the amount of mixed MSW which undergoes pre-treatment, the greenhouse gas emissions associated to MSW treatment and disposal, as well as the share of GDP spent on MSW management. The results obtained suggested that an integration of several factors is required to increase sustainability. It is essential to strengthen and take advantage of the subsystems which are working within the waste management system, as in the case of the informal sector. In addition to the implementation of flexible treatment technologies which help to decrease negative environmental impacts. Moreover, the costs of these technologies should be affordable, allowing a better financial management.

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    https://dx.doi.org/10.18419/op...
    Doctoral thesis . 2011
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      https://dx.doi.org/10.18419/op...
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  • Of all the renewable resources, solar energy has the greatest potential for endingour reliance on fossil fuels. The solar energy that reaches the earth’s surface is 10,000 times the total energy consumption of the planet at any given time and yet we harness only 0.1% of this, mostly as solar-thermal energy. The major limitations of solar energy conversion processes are cost and storage. Strategies for addressing these issues have focused on advanced designs and new materials. Nanomaterials- materials with high surface-to-volume ratios, play a crucial role in the future of this industry. The work of this thesis involved a novel design for a cost-effective, water-splitting system that produces hydrogen - a storable fuel. The system designwas comprised of nanomaterials assembled on a microparticle. Thesis (PhD)--University of South Australia, 2016. Includes bibliographical references.

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  • Of all the renewable resources, solar energy has the greatest potential for endingour reliance on fossil fuels. The solar energy that reaches the earth’s surface is 10,000 times the total energy consumption of the planet at any given time and yet we harness only 0.1% of this, mostly as solar-thermal energy. The major limitations of solar energy conversion processes are cost and storage. Strategies for addressing these issues have focused on advanced designs and new materials. Nanomaterials- materials with high surface-to-volume ratios, play a crucial role in the future of this industry. The work of this thesis involved a novel design for a cost-effective, water-splitting system that produces hydrogen - a storable fuel. The system designwas comprised of nanomaterials assembled on a microparticle. Thesis (PhD)--University of South Australia, 2016. Includes bibliographical references.

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    Authors: Koch, Bernd;

    Eines der größten Probleme bei der kontrollierten Kernfusion ist die immense thermische Belastung der mit dem Plasma in Berührung kommenden Materialien. Um den Energiefluß aus dem Plasma auf eine möglichst große Fläche zu verteilen, werden die betroffenen Komponenten in der Regel so angebracht, da"s das magnetische Feld annähernd parallel zur Oberfläche verläuft. Im Rahmen dieser Arbeit wurden ein spezieller drehbarer Meßkopf zur winkelabhängigen Messung des Strom- und Energieflusses entwickelt und ausführliche experimentelle Untersuchungen zur Winkelabhängigkeit der Teilchen- und Energieflüsse auf eine Fläche durchgeführt. Zum Verständnis der zu Grunde liegenden Mechanismen wird basierend auf den Gyrationsbahnen der Teilchen ein analytisches Modell entwickelt und dessen qualitative Übereinstimmung mit den experimentellen Befunden festgestellt. Die Durchführung der Experimente erfolgte am Plasmagenerator PSI-2, einem linearen Divertor-Simulator mit einem moderaten magnetischen Feld. Der Aufbau des Meßkopfes als ebene Sonde in einer isolierten Fläche enspricht dabei in etwa der einer sogenannten ,,flush-mounted probe''''. Die äußeren Maße der Sonde sind dabei vergleichbar mit dem Ionengyroradius ri}. Während die Elektronen bei den Experimenten stark magnetisiert sind, variieren die Bedingungen für die Ionen zwischen unmagnetisiert und magnetisiert je nach Ionenmasse und Magnetfeldstärke. Bei den Experimenten wurden verschiedene Größen der Plasmarandschicht als Funktionen des Winkels zwischen der Oberflächennormale der Sonde und dem Vektor des magnetischen Feldes bestimmt. In fusion experiments, the energy flux to the target plates is an important issue. In order to spread the heat load, surfaces are usually designed to intersect magnetic field lines at very shallow angles. In the course of this work, a sensitive probe allowing simultaneous measurements of energy flux and current density as functions of a bias voltage was developed. Extensive experimental data on the particle and energy flux densities as functions of the angle between a surface and the confining magnetic field are provided. An analytical model is developed in order to reveal the physics involved; it is in good qualitative agreement with the experimental results. The experiments were conducted at the PSI-2 facility, a linear divertor simulator with moderate magnetic field strength. The probe was rotated in a spatially homogeneous plasma. The active area, a tungsten covered Peltier module, was immersed in a ceramic surface, closely resembling the geometry of a flush mounted probe. Its dimensions were comparable to the ion gyro radius ri. While the electrons were strongly magnetized, the ion conditions varied between unmagnetized and magnetized depending on the ion species. Sheath parameters were determined as functions of the angle alpha between the probe surface normal and the magnetic field.

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    https://dx.doi.org/10.18452/15...
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      https://dx.doi.org/10.18452/15...
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    Authors: Koch, Bernd;

    Eines der größten Probleme bei der kontrollierten Kernfusion ist die immense thermische Belastung der mit dem Plasma in Berührung kommenden Materialien. Um den Energiefluß aus dem Plasma auf eine möglichst große Fläche zu verteilen, werden die betroffenen Komponenten in der Regel so angebracht, da"s das magnetische Feld annähernd parallel zur Oberfläche verläuft. Im Rahmen dieser Arbeit wurden ein spezieller drehbarer Meßkopf zur winkelabhängigen Messung des Strom- und Energieflusses entwickelt und ausführliche experimentelle Untersuchungen zur Winkelabhängigkeit der Teilchen- und Energieflüsse auf eine Fläche durchgeführt. Zum Verständnis der zu Grunde liegenden Mechanismen wird basierend auf den Gyrationsbahnen der Teilchen ein analytisches Modell entwickelt und dessen qualitative Übereinstimmung mit den experimentellen Befunden festgestellt. Die Durchführung der Experimente erfolgte am Plasmagenerator PSI-2, einem linearen Divertor-Simulator mit einem moderaten magnetischen Feld. Der Aufbau des Meßkopfes als ebene Sonde in einer isolierten Fläche enspricht dabei in etwa der einer sogenannten ,,flush-mounted probe''''. Die äußeren Maße der Sonde sind dabei vergleichbar mit dem Ionengyroradius ri}. Während die Elektronen bei den Experimenten stark magnetisiert sind, variieren die Bedingungen für die Ionen zwischen unmagnetisiert und magnetisiert je nach Ionenmasse und Magnetfeldstärke. Bei den Experimenten wurden verschiedene Größen der Plasmarandschicht als Funktionen des Winkels zwischen der Oberflächennormale der Sonde und dem Vektor des magnetischen Feldes bestimmt. In fusion experiments, the energy flux to the target plates is an important issue. In order to spread the heat load, surfaces are usually designed to intersect magnetic field lines at very shallow angles. In the course of this work, a sensitive probe allowing simultaneous measurements of energy flux and current density as functions of a bias voltage was developed. Extensive experimental data on the particle and energy flux densities as functions of the angle between a surface and the confining magnetic field are provided. An analytical model is developed in order to reveal the physics involved; it is in good qualitative agreement with the experimental results. The experiments were conducted at the PSI-2 facility, a linear divertor simulator with moderate magnetic field strength. The probe was rotated in a spatially homogeneous plasma. The active area, a tungsten covered Peltier module, was immersed in a ceramic surface, closely resembling the geometry of a flush mounted probe. Its dimensions were comparable to the ion gyro radius ri. While the electrons were strongly magnetized, the ion conditions varied between unmagnetized and magnetized depending on the ion species. Sheath parameters were determined as functions of the angle alpha between the probe surface normal and the magnetic field.

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    https://dx.doi.org/10.18452/15...
    Doctoral thesis . 2004
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  • Authors: Dieter Sell; M. M. W. Etschmann; Jens Schrader;

    Fourteen yeast strains were screened for production of 2-phenylethanol from L-phenylalanine with molasses as carbon source. Up to 1 g 2-phenylethanol l-1 was obtained. Using oleyl alcohol as a second phase for in situ product removal to enhance the production of 2-phenylethanol increased the yield to about 3 g 2-phenylethanol l-1 at 35 degrees C. The most productive strains were Kluyveromyces marxianus CBS 600 and CBS 397.

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  • Authors: Dieter Sell; M. M. W. Etschmann; Jens Schrader;

    Fourteen yeast strains were screened for production of 2-phenylethanol from L-phenylalanine with molasses as carbon source. Up to 1 g 2-phenylethanol l-1 was obtained. Using oleyl alcohol as a second phase for in situ product removal to enhance the production of 2-phenylethanol increased the yield to about 3 g 2-phenylethanol l-1 at 35 degrees C. The most productive strains were Kluyveromyces marxianus CBS 600 and CBS 397.

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  • Authors: Aparicio, Jesus; Tenza-Abril, Antonio; Borg, Malcolm; Galea, John; +1 Authors

    Maltese agriculture faces great challenges due to the severe scarcity ofwater. Sufficientwater resources, in quantity and quality, are necessary to cover the demand in the production of wine grape, one of the most important crops in Maltese agriculture. But also, economic efficiency is essential in the grape cultivation. A Cost-Benefit Analysis (CBA) is defined for Maltese vineyards in the Siġġiewi region, considering two irrigation scenarios, irrigation with groundwater or “do-nothing”, comparedwith the “use non-conventional waters” from mixing water from a small desalination plant and groundwater. For the alternative ‘mixing desalinatedwater with groundwater’ it is possible to improve water availability and quality for vine crops, while increasing economic benefits for farmer. The results indicate a profitable project fromaminimumarea of 1 ha, but final benefit is highly dependent on the irrigated surface extension according to water price. Desalination, compared with other type of nonconventional water is considered the best option in this assessment with a small reverse osmosis (RO) desalination plant (120 m3 /day) for covering the irrigation needs.

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  • Authors: Aparicio, Jesus; Tenza-Abril, Antonio; Borg, Malcolm; Galea, John; +1 Authors

    Maltese agriculture faces great challenges due to the severe scarcity ofwater. Sufficientwater resources, in quantity and quality, are necessary to cover the demand in the production of wine grape, one of the most important crops in Maltese agriculture. But also, economic efficiency is essential in the grape cultivation. A Cost-Benefit Analysis (CBA) is defined for Maltese vineyards in the Siġġiewi region, considering two irrigation scenarios, irrigation with groundwater or “do-nothing”, comparedwith the “use non-conventional waters” from mixing water from a small desalination plant and groundwater. For the alternative ‘mixing desalinatedwater with groundwater’ it is possible to improve water availability and quality for vine crops, while increasing economic benefits for farmer. The results indicate a profitable project fromaminimumarea of 1 ha, but final benefit is highly dependent on the irrigated surface extension according to water price. Desalination, compared with other type of nonconventional water is considered the best option in this assessment with a small reverse osmosis (RO) desalination plant (120 m3 /day) for covering the irrigation needs.

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    Authors: Wit, Francisca;

    In Southeast Asia and Indonesia, land use change (LUC) occurs in the form of large-scale deforestation and peatland degradation for agricultural purposes, which causes terrestrial CO2 emissions from peat soils as a consequence of oxidation, subsidence and forest fires. However, the consequences of this peatland degradation for the aquatic and marine environment and carbon cycle are less well known. In the framework of the SPICE III a CISKA subproject 1, the impact of land use change in Indonesia was determined by the quantification of the inorganic and organic carbon fluxes and CO2 emissions from the rivers, estuaries and coastal ocean into the atmosphere as well as the marine carbonate system in order to develop sustainable mitigation strategies to reduce CO2 emissions. The findings of this PhD study bring attention to the fact that the impacts of tropical peatland degradation in Indonesia are not limited to direct CO2 emissions due to drainage and deforestation, but also greatly affect the carbon cycle of adjacent freshwater and marine environments through a variety of processes. By means of a mixing model it was shown that dissolved organic carbon leaching from disturbed peat soils has increased by 200% from 62 to 183 g m-2 yr-1 as a consequence of hydrological changes and secondary vegetation. Increased freshwater fluxes due to reduced evapotranspiration account for 38% of the increase in carbon leaching, whereas the labile leaf litter from secondary vegetation is responsible for the remaining 62% increase. Once the organic carbon has reached the rivers, it is either respired and emitted to the atmosphere (river outgassing) or exported to the coastal ocean (riverine carbon export). Dissolved organic carbon (DOC) and pCO2 concentrations in the rivers increase as the share of disturbed peatland coverage in the catchment increases as a consequence of increased carbon leaching and decomposition. Based on the regression between peat coverage and CO2 yield, the CO2 fluxes from rivers in Indonesia have been estimated as well as in Malaysia and extrapolated to Southeast Asia, and amount to 53.9 A /-12.4, 6.2A /-1.6 and 66.9A /-15.7 Tg C yr-1, respectively. However, these fluxes are rather moderate due to the short residence time of the river waters and the location of peat close to the coast, which shorten the time available for decomposition. Circa 53% of the carbon that enters the freshwater system in Southeast Asia is emitted as CO2 to the atmosphere, whereas the remaining 47% is exported to the coastal ocean. Based on total alkalinity (TA), dissolved inorganic carbon (DIC) and pCO2 measurements in the estuaries and coastal ocean of Sumatra, it was shown that the majority of the exported carbon is respired in the estuaries. Circa 62.7% of the exported, respired CO2 is emitted to the atmosphere, whereas 6.4% is assumed to be buried in the sediments and the remaining 30.6% is absorbed in the water column. Here, the respired CO2 contributes to ocean acidification and lowers the aragonite and calcite saturation states (I(c)AR / I(c)CA). This induces carbonate dissolution of sediments, but also coral reefs and other calcifying organisms and can therefore be viewed as the invisible carbon footprint, but is currently overlooked in climate mitigation strategy policies. In Indonesia, the terrestrial direct CO2 emissions due to LUC via secondary vegetation (10.9 Tg C yr-1), peat oxidation (109.9 Tg C yr-1) and forest fires (82.1 Tg C yr-1) amount to 192.0 Tg C yr-1. Carbon loss due to indirect emissions from the rivers (53.9 Tg yr-1, ref. (Wit et al. 2015)), estuaries and coastal ocean (49.4 Tg yr-1), as well as the invisible carbon footprint (24.1 Tg yr-1) and excluding the natural emissions from pristine peatlands (13.0 Tg C yr-1) amounts to 114.3 Tg C yr-1. Therefore, the total carbon loss due to LUC amounts to 306.3 Tg yr-1, which represents an increase of 60% with respect to the direct terrestrial emissions currently considered in greenhouse gas mitigation policies. With respect to the development of climate change mitigation strategies as one of the overarching goals of SPICE and CISKA, the advice is to include the aquatic and marine CO2 emissions, as well as the invisible carbon footprint in order to cover the carbon losses with respect to LUC in Indonesia. In addition, carbon leaching and fluvial carbon export should be reduced to mitigate the impact of ocean acidification and carbonate dissolution.

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    Authors: Wit, Francisca;

    In Southeast Asia and Indonesia, land use change (LUC) occurs in the form of large-scale deforestation and peatland degradation for agricultural purposes, which causes terrestrial CO2 emissions from peat soils as a consequence of oxidation, subsidence and forest fires. However, the consequences of this peatland degradation for the aquatic and marine environment and carbon cycle are less well known. In the framework of the SPICE III a CISKA subproject 1, the impact of land use change in Indonesia was determined by the quantification of the inorganic and organic carbon fluxes and CO2 emissions from the rivers, estuaries and coastal ocean into the atmosphere as well as the marine carbonate system in order to develop sustainable mitigation strategies to reduce CO2 emissions. The findings of this PhD study bring attention to the fact that the impacts of tropical peatland degradation in Indonesia are not limited to direct CO2 emissions due to drainage and deforestation, but also greatly affect the carbon cycle of adjacent freshwater and marine environments through a variety of processes. By means of a mixing model it was shown that dissolved organic carbon leaching from disturbed peat soils has increased by 200% from 62 to 183 g m-2 yr-1 as a consequence of hydrological changes and secondary vegetation. Increased freshwater fluxes due to reduced evapotranspiration account for 38% of the increase in carbon leaching, whereas the labile leaf litter from secondary vegetation is responsible for the remaining 62% increase. Once the organic carbon has reached the rivers, it is either respired and emitted to the atmosphere (river outgassing) or exported to the coastal ocean (riverine carbon export). Dissolved organic carbon (DOC) and pCO2 concentrations in the rivers increase as the share of disturbed peatland coverage in the catchment increases as a consequence of increased carbon leaching and decomposition. Based on the regression between peat coverage and CO2 yield, the CO2 fluxes from rivers in Indonesia have been estimated as well as in Malaysia and extrapolated to Southeast Asia, and amount to 53.9 A /-12.4, 6.2A /-1.6 and 66.9A /-15.7 Tg C yr-1, respectively. However, these fluxes are rather moderate due to the short residence time of the river waters and the location of peat close to the coast, which shorten the time available for decomposition. Circa 53% of the carbon that enters the freshwater system in Southeast Asia is emitted as CO2 to the atmosphere, whereas the remaining 47% is exported to the coastal ocean. Based on total alkalinity (TA), dissolved inorganic carbon (DIC) and pCO2 measurements in the estuaries and coastal ocean of Sumatra, it was shown that the majority of the exported carbon is respired in the estuaries. Circa 62.7% of the exported, respired CO2 is emitted to the atmosphere, whereas 6.4% is assumed to be buried in the sediments and the remaining 30.6% is absorbed in the water column. Here, the respired CO2 contributes to ocean acidification and lowers the aragonite and calcite saturation states (I(c)AR / I(c)CA). This induces carbonate dissolution of sediments, but also coral reefs and other calcifying organisms and can therefore be viewed as the invisible carbon footprint, but is currently overlooked in climate mitigation strategy policies. In Indonesia, the terrestrial direct CO2 emissions due to LUC via secondary vegetation (10.9 Tg C yr-1), peat oxidation (109.9 Tg C yr-1) and forest fires (82.1 Tg C yr-1) amount to 192.0 Tg C yr-1. Carbon loss due to indirect emissions from the rivers (53.9 Tg yr-1, ref. (Wit et al. 2015)), estuaries and coastal ocean (49.4 Tg yr-1), as well as the invisible carbon footprint (24.1 Tg yr-1) and excluding the natural emissions from pristine peatlands (13.0 Tg C yr-1) amounts to 114.3 Tg C yr-1. Therefore, the total carbon loss due to LUC amounts to 306.3 Tg yr-1, which represents an increase of 60% with respect to the direct terrestrial emissions currently considered in greenhouse gas mitigation policies. With respect to the development of climate change mitigation strategies as one of the overarching goals of SPICE and CISKA, the advice is to include the aquatic and marine CO2 emissions, as well as the invisible carbon footprint in order to cover the carbon losses with respect to LUC in Indonesia. In addition, carbon leaching and fluvial carbon export should be reduced to mitigate the impact of ocean acidification and carbonate dissolution.

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    Authors: Wong, Catherine;

    [Extract] The Fukushima nuclear disaster demonstrated the magnitude of devastation when energy security is prioritized over human security. No doubt, the task of balancing the two needs is immense and difficult trade-offs need to be made at different times. But policy decisions in these two domains cannot be made without adequate consultation with the public, consideration for their preferences, and a shared vision for the future.

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    Authors: Wong, Catherine;

    [Extract] The Fukushima nuclear disaster demonstrated the magnitude of devastation when energy security is prioritized over human security. No doubt, the task of balancing the two needs is immense and difficult trade-offs need to be made at different times. But policy decisions in these two domains cannot be made without adequate consultation with the public, consideration for their preferences, and a shared vision for the future.

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    Authors: Rocío Cupeiro Coto; Esther Morencos Martínez; María Álvarez Sánchez; Pedro José Benito Peinado; +1 Authors

    ResumenEl entrenamiento con cargas es una actividad anaeróbica glucolítica intensa y se ha comprobado que el error en las estimaciones del gasto energético en esta actividad varía entre un 13 y un 30%. El principal objetivo de este trabajo es describir la contribución anaeróbica de energía en un circuito con cargas. Doce hombres (20-26 años) y diecisiete mujeres (18-29 años) estudiantes de Ciencias de la Actividad Física y del Deporte realizaron un entrenamiento en circuito de cargas a 6 intensidades diferentes (entre el 30% y 80% de su 15RM). Durante la totalidad de los circuitos se registró el gasto energético aeróbico por calorimetría indirecta, la frecuencia cardiaca con pulsómetro Polar® y la concentración de lactato en sangre capilar para medir la contribución anaeróbica. El incremento que produjo la energía anaeróbica se situó entre el 5,1% y un máximo del 13,5%, lo que hace evidente que medir o no la contribución anaeróbica en el entrenamiento en circuito puede provocar un error medio del 9,65%. Existen diferencias significativas (PAbstractResistance training is an intense anaerobic glycolytic activity and has been shown that estimates of energy expenditure in this activity turn out into an error that varies between 13 and 30%. The main aim of this paper is to describe the anaerobic energy contribution in circuit weight training. Twelve men (20-26 years) and seventeen women (18-29 years) students in Science of Physical Activity and Sport performed circuit training at six different intensities (between 30% and 80% of 15RM). During all the circuits aerobic energy expenditure was registered by indirect calorimetry, heart rate with Polar® monitors and lactate concentration in capillary blood to measure the anaerobic contribution. The increased due to anaerobic energy was between 5,1% and a maximum of 13,5%, which clearly means that to measure or not the anaerobic contribution in circuit training can lead to an average error of 9,65%. There are significant differences (P

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    Authors: Rocío Cupeiro Coto; Esther Morencos Martínez; María Álvarez Sánchez; Pedro José Benito Peinado; +1 Authors

    ResumenEl entrenamiento con cargas es una actividad anaeróbica glucolítica intensa y se ha comprobado que el error en las estimaciones del gasto energético en esta actividad varía entre un 13 y un 30%. El principal objetivo de este trabajo es describir la contribución anaeróbica de energía en un circuito con cargas. Doce hombres (20-26 años) y diecisiete mujeres (18-29 años) estudiantes de Ciencias de la Actividad Física y del Deporte realizaron un entrenamiento en circuito de cargas a 6 intensidades diferentes (entre el 30% y 80% de su 15RM). Durante la totalidad de los circuitos se registró el gasto energético aeróbico por calorimetría indirecta, la frecuencia cardiaca con pulsómetro Polar® y la concentración de lactato en sangre capilar para medir la contribución anaeróbica. El incremento que produjo la energía anaeróbica se situó entre el 5,1% y un máximo del 13,5%, lo que hace evidente que medir o no la contribución anaeróbica en el entrenamiento en circuito puede provocar un error medio del 9,65%. Existen diferencias significativas (PAbstractResistance training is an intense anaerobic glycolytic activity and has been shown that estimates of energy expenditure in this activity turn out into an error that varies between 13 and 30%. The main aim of this paper is to describe the anaerobic energy contribution in circuit weight training. Twelve men (20-26 years) and seventeen women (18-29 years) students in Science of Physical Activity and Sport performed circuit training at six different intensities (between 30% and 80% of 15RM). During all the circuits aerobic energy expenditure was registered by indirect calorimetry, heart rate with Polar® monitors and lactate concentration in capillary blood to measure the anaerobic contribution. The increased due to anaerobic energy was between 5,1% and a maximum of 13,5%, which clearly means that to measure or not the anaerobic contribution in circuit training can lead to an average error of 9,65%. There are significant differences (P

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Bach, Vanessa;

    Ressourcen stellen die Basis für eine erfolgreiche industrielle und technologische Entwicklung dar und somit auch für den Wohlstand heutiger und zukünftiger Generationen. Mit steigender Ressourcennutzung nehmen auch die (physische und sozio-ökonomische) Verfügbarkeit abiotischer und biotischer Ressourcen, die Umweltverschmutzung und die sozialen Auswirkungen durch den Abbau und Nutzung der Ressourcen zu. Um den Erfolg implementierter Strategien (und deren Maßnahmen) hinsichtlich ihres Beitrags zu einem effizienten und nachhaltigen Umgang mit Ressourcen zu bewerten, bedarf es an entsprechenden Bewertungsmethoden. Diese Dissertation stellt vier Methoden bereit um die Bewertung abiotischer und biotischer Ressourcennutzung im Kontext der Nachhaltigkeit auf Produkt- und regionaler Ebene in konsistenter Weise zu bewerten. Die Methode zur Bewertung abiotischer Ressourcen auf Produktebene betrachtet insgesamt 21 relevante Aspekte und stellt Indikatoren zur Quantifizierung bereit. Für die Bewertung der sozio-ökonomischen Einschränkungen von Lieferketten ist eine neuer Ansatz entwickelt, der geopolitische, politische und regulative Aspekte berücksichtigt. Des Weiteren sind Screening-Indikatoren verfügbar, die die gesellschaftliche Akzeptanz der Ressourcennutzung adressieren. Um die Verfügbarkeit terrestrischer biotischer Ressourcen in Produktsystemen zu bewerten, wurde eine umfassende Methode mit 25 Indikatoren erstellt. Des Weiteren wird ein Ansatz vorgestellt, der es ermöglicht eine konsistente Zusammenführung und somit auch Bewertung verschiedener Ressourcentypen zu ermöglichen. Er findet bei der Zusammenführung der entwickelten Methoden zur Bewertung abiotischer und biotischer Ressourcen Anwendung. Da die Nutzung von Ressourcen auch auf Macro-Ebene betrachtet werden muss, wurde eine Methode zur Bewertung abiotischer Ressourcen auf regionaler Ebene entwickelt, die 25 Indikatoren für die Bewertung der Kritikalität (Verfügbarkeit von Ressourcen und Vulnerabilität der Region) und der gesellschaftlichen Akzeptanz zur Verfügung stellt. Verschiedene Fallstudien wurden durchgeführt um die Anwendbarkeit der entwickelten Methoden aufzuzeigen und zu verdeutlichen, warum eine umfassende Bewertung der Ressourcennutzung notwendig ist. Die Fallstudien umfassen u.a. die Bewertung eines Smartphones, Pkw-Herstellung und Biokraftstoffe. Die Anwendbarkeit der Methoden wird zudem erhöht, indem Indikatorwerte für 36 Metalle und 4 fossile Rohstoffe zur Verfügung gestellt werden. Die Bewertung der Nutzung abiotischer und biotischer Ressourcen auf Produkt- und regionaler Ebene wird mit dieser Dissertation signifikant verbessert, indem vier wissenschaftliche Methoden zur robusten und umfassenden Bewertung aller drei Nachhaltigkeitsdimensionen bereitgestellt werden. Resources are the basis for a thriving industrial and technological development and therefore for prosperity of present and future generations. With increasing resource use, challenges with regard to (physical and socio-economic) availability of abiotic and biotic resources and raw materials, pollution of the environment as well as social impacts associated with resource extraction and use arise. To evaluate the success of strategies managing resource use more efficiently and sustainably methodologies are required to comprehensively assess resource use and related impacts. This thesis provides four methodologies to improve the assessment of abiotic and biotic resource use in the context of sustainability on product and regional level. For the method to assess abiotic resources use on product level overall 21 aspects are considered as relevant and indicator for quantification are provided. In order to determine socio-economic supply chain restrictions a new approach is developed, considering geopolitical, political and regulatory aspects affecting resource extraction and use. Further, screening indicators are established to evaluate the societal acceptance of resources with regard to compliance with social and environmental standards. To assess the availability of terrestrial biotic resources in product systems a comprehensive methodology is established, which includes 25 indicators. Further, an approach is proposed to combine assessment methodologies in a consistent way. This approach is applied to the developed method of this thesis leading to a combined methodology. The use of resources also has to be considered on macro-economic. Thus, a methodology is developed providing 25 indicators for the two dimensions criticality, consisting of the sub-dimensions (physical and socio-economic) availability and vulnerability, as well as societal acceptance. Several case studies are carried out to demonstrate the applicability of the developed methods and to confirm the need for a comprehensive assess of resource use on micro and macro level, e.g. case studies for smart phones and cars, for biofuels produced from rapeseed and soybean. The applicability of the methodologies is further enhanced by providing indicator results for 36 metals and four fossil raw materials. The assessment of abiotic and biotic resource use on product and regional level is improved significantly by establishing four scientifically robust yet applicable methodologies, which consider multiple aspects of resource use in all three sustainability dimensions.

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    Authors: Bach, Vanessa;

    Ressourcen stellen die Basis für eine erfolgreiche industrielle und technologische Entwicklung dar und somit auch für den Wohlstand heutiger und zukünftiger Generationen. Mit steigender Ressourcennutzung nehmen auch die (physische und sozio-ökonomische) Verfügbarkeit abiotischer und biotischer Ressourcen, die Umweltverschmutzung und die sozialen Auswirkungen durch den Abbau und Nutzung der Ressourcen zu. Um den Erfolg implementierter Strategien (und deren Maßnahmen) hinsichtlich ihres Beitrags zu einem effizienten und nachhaltigen Umgang mit Ressourcen zu bewerten, bedarf es an entsprechenden Bewertungsmethoden. Diese Dissertation stellt vier Methoden bereit um die Bewertung abiotischer und biotischer Ressourcennutzung im Kontext der Nachhaltigkeit auf Produkt- und regionaler Ebene in konsistenter Weise zu bewerten. Die Methode zur Bewertung abiotischer Ressourcen auf Produktebene betrachtet insgesamt 21 relevante Aspekte und stellt Indikatoren zur Quantifizierung bereit. Für die Bewertung der sozio-ökonomischen Einschränkungen von Lieferketten ist eine neuer Ansatz entwickelt, der geopolitische, politische und regulative Aspekte berücksichtigt. Des Weiteren sind Screening-Indikatoren verfügbar, die die gesellschaftliche Akzeptanz der Ressourcennutzung adressieren. Um die Verfügbarkeit terrestrischer biotischer Ressourcen in Produktsystemen zu bewerten, wurde eine umfassende Methode mit 25 Indikatoren erstellt. Des Weiteren wird ein Ansatz vorgestellt, der es ermöglicht eine konsistente Zusammenführung und somit auch Bewertung verschiedener Ressourcentypen zu ermöglichen. Er findet bei der Zusammenführung der entwickelten Methoden zur Bewertung abiotischer und biotischer Ressourcen Anwendung. Da die Nutzung von Ressourcen auch auf Macro-Ebene betrachtet werden muss, wurde eine Methode zur Bewertung abiotischer Ressourcen auf regionaler Ebene entwickelt, die 25 Indikatoren für die Bewertung der Kritikalität (Verfügbarkeit von Ressourcen und Vulnerabilität der Region) und der gesellschaftlichen Akzeptanz zur Verfügung stellt. Verschiedene Fallstudien wurden durchgeführt um die Anwendbarkeit der entwickelten Methoden aufzuzeigen und zu verdeutlichen, warum eine umfassende Bewertung der Ressourcennutzung notwendig ist. Die Fallstudien umfassen u.a. die Bewertung eines Smartphones, Pkw-Herstellung und Biokraftstoffe. Die Anwendbarkeit der Methoden wird zudem erhöht, indem Indikatorwerte für 36 Metalle und 4 fossile Rohstoffe zur Verfügung gestellt werden. Die Bewertung der Nutzung abiotischer und biotischer Ressourcen auf Produkt- und regionaler Ebene wird mit dieser Dissertation signifikant verbessert, indem vier wissenschaftliche Methoden zur robusten und umfassenden Bewertung aller drei Nachhaltigkeitsdimensionen bereitgestellt werden. Resources are the basis for a thriving industrial and technological development and therefore for prosperity of present and future generations. With increasing resource use, challenges with regard to (physical and socio-economic) availability of abiotic and biotic resources and raw materials, pollution of the environment as well as social impacts associated with resource extraction and use arise. To evaluate the success of strategies managing resource use more efficiently and sustainably methodologies are required to comprehensively assess resource use and related impacts. This thesis provides four methodologies to improve the assessment of abiotic and biotic resource use in the context of sustainability on product and regional level. For the method to assess abiotic resources use on product level overall 21 aspects are considered as relevant and indicator for quantification are provided. In order to determine socio-economic supply chain restrictions a new approach is developed, considering geopolitical, political and regulatory aspects affecting resource extraction and use. Further, screening indicators are established to evaluate the societal acceptance of resources with regard to compliance with social and environmental standards. To assess the availability of terrestrial biotic resources in product systems a comprehensive methodology is established, which includes 25 indicators. Further, an approach is proposed to combine assessment methodologies in a consistent way. This approach is applied to the developed method of this thesis leading to a combined methodology. The use of resources also has to be considered on macro-economic. Thus, a methodology is developed providing 25 indicators for the two dimensions criticality, consisting of the sub-dimensions (physical and socio-economic) availability and vulnerability, as well as societal acceptance. Several case studies are carried out to demonstrate the applicability of the developed methods and to confirm the need for a comprehensive assess of resource use on micro and macro level, e.g. case studies for smart phones and cars, for biofuels produced from rapeseed and soybean. The applicability of the methodologies is further enhanced by providing indicator results for 36 metals and four fossil raw materials. The assessment of abiotic and biotic resource use on product and regional level is improved significantly by establishing four scientifically robust yet applicable methodologies, which consider multiple aspects of resource use in all three sustainability dimensions.

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    Authors: Zhukova, V.; Pakhlova, G.; Babu, V.; Park, C. W.; +151 Authors

    We report a new measurement of the exclusive $e^+ e^- \to D^{(*) \pm} D^{*\mp}$ cross sections as a function of the center-of-mass energy from the $D^{(*) \pm} D^{* \mp}$ threshold through $\sqrt{s}=6.0$ GeV with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of $951$ fb$^{-1}$. The accuracy of the cross section measurement is increased by a factor of two over the first Belle study. We perform the first angular analysis of the $e^+ e^- \to D^{* \pm} D^{* \mp}$ process and decompose this exclusive cross section into three components corresponding to the $D^*$ helicities.

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    Authors: Zhukova, V.; Pakhlova, G.; Babu, V.; Park, C. W.; +151 Authors

    We report a new measurement of the exclusive $e^+ e^- \to D^{(*) \pm} D^{*\mp}$ cross sections as a function of the center-of-mass energy from the $D^{(*) \pm} D^{* \mp}$ threshold through $\sqrt{s}=6.0$ GeV with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of $951$ fb$^{-1}$. The accuracy of the cross section measurement is increased by a factor of two over the first Belle study. We perform the first angular analysis of the $e^+ e^- \to D^{* \pm} D^{* \mp}$ process and decompose this exclusive cross section into three components corresponding to the $D^*$ helicities.

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    Authors: Tahnee María; González Martínez;

    Die Metropolregion Santiago (MRS) verzeichnete in den letzten Jahren ein großes Bevölkerungswachstum und einen Anstieg des Lebensstandards. Als Folge davon hat sich das Aufkommen von Siedlungsabfällen fast innerhalb von 10 Jahren verdoppelt. Die Daten für den aktuellen Zustand des Abfallmanagements wurden durch Feldforschungen, Fragebögen, Feldbesuche und durch eine systematische Auswertung von bereits vorliegender Literatur erhoben. Das integrative Nachhaltigkeitskonzept der Helmholtz-Gemeinschaft diente als konzeptioneller Rahmen für die Studie. Zur Bewertung des aktuellen Zustands des Abfallmanagements wurden Nachhaltigkeitsindikatoren identifiziert, deren aktuelle Werte bestimmt und Zielwerte festgelegt. Die Nachhaltigkeitsanalyse zeigt, dass die größten Defizite darin liegen, dass nahezu die gesamte Abfallmenge ohne jegliche Vorbehandlung deponiert wird. Damit verbunden sind lang andauernde Emissionen von Treibhausgasen. Um herauszufinden, wie der informelle Sektor im Abfallmanagement zur Nachhaltigkeit beiträgt, wurden veröffentlichten Erfahrungen mit informellen Müllsammlern in Lateinamerika analysiert. Dabei wurden die entsprechenden Akteure sowie etablierte Allianzen zwischen diesen Akteuren identifiziert. Schlüsselfaktoren für ein nachhaltiges Abfallmanagement unter Einbeziehung des informellen Sektors sind die Legalisierung der Schattenwirtschaft und feste Verträge mit Partnerunternehmen. Relevante Akteure für die Gestaltung der Arbeitsbedingungen des informellen Sektors sind Vertreter privater und öffentlicher Unternehmen, einzelne gesellschaftliche Gruppen sowie Vertreter von Nichtregierungsorganisationen. Schließlich wurden drei explorative Szenarien für das Bezugsjahr 2030 entwickelt: Business as Usual (BAU), Collective Responsibility (CR) und Market Individualism (MI). Das BAU-Szenario enthält eine getrennte Sammlung von Bioabfall und von Wertstoffen; hervorgerufen durch einen verstärkten Organisationsgrad der informellen Müllsammler und den Ausbau von Bring-Systemen. Die Errichtung mechanischer Sortierungsanlagen trägt zur Verwertung der Materialien und zum Recycling bei. Das entstehende Deponiegas und Biogas wird als erneuerbare Energiequelle genutzt. Das CR-Szenario enthält eine getrennte Sammlung von Bioabfall und Wertstoffen. Dies wird erreicht durch eine verstärkte Zusammenarbeit mit den jetzt organisierten Müllsammlern und durch den Ausbau von Bring-Systemen. Mechanische Sortierungsanlagen tragen zur Verwertung von Materialien und zum Recycling bei. Durch Abtrennung einer heizwertreichen Fraktion in mechanisch biologischen Anlagen werden Sekundärbrennstoffe produziert. Darüber hinaus werden, das entstehende Deponiegas sowie das in Vergärungsanlagen erzeugte Biogas energetisch genutzt. Im MI-Szenario sind Wiederverwertungsstrategien von untergeordneter Bedeutung. Es gibt kein Interesse an einer Zusammenarbeit mit den informellen Müllsammlern und keine Anreize für einen verstärkten Organisationsgrad in diesem Bereich. Deshalb bleibt die Branche weitgehend informell. Technologische Entwicklungen in diesem Szenario enthalten die mechanische Sortierung von gemischtem Abfall und die energetische Verwertung von Deponiegas. Die Ergebnisse zeigten, dass das Pro-Kopf-Aufkommen an Siedlungsabfällen im Jahr 2030 in allen Szenarien deutlich höher als im Jahr 2007 ist und der festgelegte Zielwert von 1,6 kg/Kopf/Tag nicht erreicht wurde. Den höchsten Wert (2,0 kg/Kopf/Tag) weist das MI-Szenario auf, der niedrigste Wert (1,8 kg/Kopf/Tag) wurde im CR-Szenario gefunden. Eine Vorbehandlung der gesammelten gemischten Siedlungsabfälle findet nur im CR-Szenario statt, der entsprechende Wert beträgt 18 %, der Zielwert wird damit nicht erreicht. Die höchsten Treibhausgasemissionen treten im MI-Szenario (295 kg CO2-eq/Kopf/Jahr) auf, den niedrigsten Wert (155 kg CO2-eq/Kopf/Jahr) findet man im CR-Szenario. All diese Werte sind, verglichen mit dem festgelegten Zielwert von 71 kg/Kopf/Jahr, deutlich zu hoch. Der Zielwert für die Wiederverwertungsquote wurde im CR-Szenario erreicht (43 %), den niedrigsten Wert zeigt das MI-Szenario (20 %). Die Zielwerte für das Einkommen der Müllsammler wurden im CR-Szenario erreicht (128 %). Im MI-Szenario beträgt dieser Wert lediglich 51 %. Die Kosten für das Abfallmanagement im Verhältnis zum Bruttoinlandsprodukt sinken in den drei Szenarien. Aus den Ergebnissen lässt sich ableiten, dass ein Einbeziehen von mehreren Faktoren erforderlich ist, um die Nachhaltigkeit des Abfallmanagementsystems in den drei Szenarien zu steigern und dass es von wesentlicher Bedeutung ist, schon vorhandene und gut funktionierende Subsysteme, wie das der informellen Müllsammler, zu nutzen und zu stärken. Ebenso ist die Umsetzung robuster Behandlungstechnologien, die einen Beitrag zur Reduktion negativer Umweltauswirkungen leisten, zu forcieren. Diese Technologien sollten preiswert sein, um ihren Einsatz auch unter wirtschaftlich vertretbaren Gesichtspunkten zu ermöglichen. The Metropolitan Region of Santiago (MRS) has experienced a large growth in population in recent years and a rise in the standard of living. Therefore, its municipal solid waste (MSW) has almost doubled in 10 years. Data about the current situation of MSW management in MRS were collected during field research, interviews, field visits and by a systematic evaluation of existing documentary literature. The Integrative Sustainability Concept of the Helmholtz Association provided a conceptual framework for the study. The sustainability analysis showed that the largest deficits are in the current amount of MSW deposited at sanitary landfills without any pre-treatment, and the emission values of greenhouse gases associated with waste treatment and final disposal. To find out if and how the informal waste sector contributes to sustainability, experiences of organization of informal primary collectors in Latin America were analyzed. The key factors which have an influence on their working conditions were identified. These factors include the existence of a legal framework for the informal waste sector; the existence of alliances with production companies guaranteeing a reliable industrial market for secondary raw materials and expansion of activities beyond collection of recyclables. Key stakeholders included people from the public and the private sector, from the civil society and from NGOs. Three explorative scenarios were developed for the year 2030: Business as Usual (BAU), Collective Responsibility (CR), and Market Individualism (MI). Waste generation, waste composition and different practices of waste collection, recovery and treatment were taken into account for the scenarios formulation. The BAU scenario incorporated separate collection of biowaste, recyclable materials with some participation of organized primary collectors and an expansion of drop-off systems. The mechanical sorting of mixed waste was introduced. The utilization of landfill gas as an energy source was promoted and the production of biogas in anaerobic digestion plants was implemented. The CR scenario incorporated separate collection of biowaste, commitment to work together with the primary waste collectors and an expansion of drop-off systems. The mechanical and mechanical biological treatment of mixed waste was introduced. The utilization of landfill gas as an energy source is promoted and the production of biogas in anaerobic digestion plants was implemented. In the MI separate collection of biowaste and recyclable materials was irrelevant. An organization of the informal primary collectors did not take place. Mechanical sorting of mixed waste was introduced. Utilization of landfill gas as an energy source was promoted. The results showed that the generation flux of MSW is at least 50% larger in all scenarios in 2030 compared to the year 2007, exceeding the limit value proposed. The highest value (2.0 kg/(person•day) is obtained in the MI scenario, and the lowest (1.8 kg/(person•day)) in the CR scenario. Pre-treatment of mixed MSW collected is only achieved in the CR scenario with a value of 18%, however, the target value is not achieved. The highest greenhouse gas emission value is obtained in the MI scenario with 295 kg CO2eq/(person•year), the lowest value of 155 kg CO2-eq/(person•year) is obtained in the CR scenario; a value that is still very high in comparison with the suggested target. The largest recycling rate is obtained in the CR scenario (43%), which is better than the target value proposed, the lowest recycling rate is obtained in the MI scenario (20%). The income of primary collectors in comparison with the income of one individual household is improved significantly in the CR scenario (128%), in the MI scenario, earnings of primary collectors decreased to 51%. The share of GDP spent on MSW management is lower in 2030, compared to the year 2007, in all scenarios the largest value of 0.17% is obtained in the CR scenario, and the lowest value of 0.14% is obtained in the MI scenario. The results of the evaluation of the scenarios showed that the largest sustainability deficits are the amount of mixed MSW which undergoes pre-treatment, the greenhouse gas emissions associated to MSW treatment and disposal, as well as the share of GDP spent on MSW management. The results obtained suggested that an integration of several factors is required to increase sustainability. It is essential to strengthen and take advantage of the subsystems which are working within the waste management system, as in the case of the informal sector. In addition to the implementation of flexible treatment technologies which help to decrease negative environmental impacts. Moreover, the costs of these technologies should be affordable, allowing a better financial management.

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    https://dx.doi.org/10.18419/op...
    Doctoral thesis . 2011
    Data sources: Datacite
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      https://dx.doi.org/10.18419/op...
      Doctoral thesis . 2011
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    Authors: Tahnee María; González Martínez;

    Die Metropolregion Santiago (MRS) verzeichnete in den letzten Jahren ein großes Bevölkerungswachstum und einen Anstieg des Lebensstandards. Als Folge davon hat sich das Aufkommen von Siedlungsabfällen fast innerhalb von 10 Jahren verdoppelt. Die Daten für den aktuellen Zustand des Abfallmanagements wurden durch Feldforschungen, Fragebögen, Feldbesuche und durch eine systematische Auswertung von bereits vorliegender Literatur erhoben. Das integrative Nachhaltigkeitskonzept der Helmholtz-Gemeinschaft diente als konzeptioneller Rahmen für die Studie. Zur Bewertung des aktuellen Zustands des Abfallmanagements wurden Nachhaltigkeitsindikatoren identifiziert, deren aktuelle Werte bestimmt und Zielwerte festgelegt. Die Nachhaltigkeitsanalyse zeigt, dass die größten Defizite darin liegen, dass nahezu die gesamte Abfallmenge ohne jegliche Vorbehandlung deponiert wird. Damit verbunden sind lang andauernde Emissionen von Treibhausgasen. Um herauszufinden, wie der informelle Sektor im Abfallmanagement zur Nachhaltigkeit beiträgt, wurden veröffentlichten Erfahrungen mit informellen Müllsammlern in Lateinamerika analysiert. Dabei wurden die entsprechenden Akteure sowie etablierte Allianzen zwischen diesen Akteuren identifiziert. Schlüsselfaktoren für ein nachhaltiges Abfallmanagement unter Einbeziehung des informellen Sektors sind die Legalisierung der Schattenwirtschaft und feste Verträge mit Partnerunternehmen. Relevante Akteure für die Gestaltung der Arbeitsbedingungen des informellen Sektors sind Vertreter privater und öffentlicher Unternehmen, einzelne gesellschaftliche Gruppen sowie Vertreter von Nichtregierungsorganisationen. Schließlich wurden drei explorative Szenarien für das Bezugsjahr 2030 entwickelt: Business as Usual (BAU), Collective Responsibility (CR) und Market Individualism (MI). Das BAU-Szenario enthält eine getrennte Sammlung von Bioabfall und von Wertstoffen; hervorgerufen durch einen verstärkten Organisationsgrad der informellen Müllsammler und den Ausbau von Bring-Systemen. Die Errichtung mechanischer Sortierungsanlagen trägt zur Verwertung der Materialien und zum Recycling bei. Das entstehende Deponiegas und Biogas wird als erneuerbare Energiequelle genutzt. Das CR-Szenario enthält eine getrennte Sammlung von Bioabfall und Wertstoffen. Dies wird erreicht durch eine verstärkte Zusammenarbeit mit den jetzt organisierten Müllsammlern und durch den Ausbau von Bring-Systemen. Mechanische Sortierungsanlagen tragen zur Verwertung von Materialien und zum Recycling bei. Durch Abtrennung einer heizwertreichen Fraktion in mechanisch biologischen Anlagen werden Sekundärbrennstoffe produziert. Darüber hinaus werden, das entstehende Deponiegas sowie das in Vergärungsanlagen erzeugte Biogas energetisch genutzt. Im MI-Szenario sind Wiederverwertungsstrategien von untergeordneter Bedeutung. Es gibt kein Interesse an einer Zusammenarbeit mit den informellen Müllsammlern und keine Anreize für einen verstärkten Organisationsgrad in diesem Bereich. Deshalb bleibt die Branche weitgehend informell. Technologische Entwicklungen in diesem Szenario enthalten die mechanische Sortierung von gemischtem Abfall und die energetische Verwertung von Deponiegas. Die Ergebnisse zeigten, dass das Pro-Kopf-Aufkommen an Siedlungsabfällen im Jahr 2030 in allen Szenarien deutlich höher als im Jahr 2007 ist und der festgelegte Zielwert von 1,6 kg/Kopf/Tag nicht erreicht wurde. Den höchsten Wert (2,0 kg/Kopf/Tag) weist das MI-Szenario auf, der niedrigste Wert (1,8 kg/Kopf/Tag) wurde im CR-Szenario gefunden. Eine Vorbehandlung der gesammelten gemischten Siedlungsabfälle findet nur im CR-Szenario statt, der entsprechende Wert beträgt 18 %, der Zielwert wird damit nicht erreicht. Die höchsten Treibhausgasemissionen treten im MI-Szenario (295 kg CO2-eq/Kopf/Jahr) auf, den niedrigsten Wert (155 kg CO2-eq/Kopf/Jahr) findet man im CR-Szenario. All diese Werte sind, verglichen mit dem festgelegten Zielwert von 71 kg/Kopf/Jahr, deutlich zu hoch. Der Zielwert für die Wiederverwertungsquote wurde im CR-Szenario erreicht (43 %), den niedrigsten Wert zeigt das MI-Szenario (20 %). Die Zielwerte für das Einkommen der Müllsammler wurden im CR-Szenario erreicht (128 %). Im MI-Szenario beträgt dieser Wert lediglich 51 %. Die Kosten für das Abfallmanagement im Verhältnis zum Bruttoinlandsprodukt sinken in den drei Szenarien. Aus den Ergebnissen lässt sich ableiten, dass ein Einbeziehen von mehreren Faktoren erforderlich ist, um die Nachhaltigkeit des Abfallmanagementsystems in den drei Szenarien zu steigern und dass es von wesentlicher Bedeutung ist, schon vorhandene und gut funktionierende Subsysteme, wie das der informellen Müllsammler, zu nutzen und zu stärken. Ebenso ist die Umsetzung robuster Behandlungstechnologien, die einen Beitrag zur Reduktion negativer Umweltauswirkungen leisten, zu forcieren. Diese Technologien sollten preiswert sein, um ihren Einsatz auch unter wirtschaftlich vertretbaren Gesichtspunkten zu ermöglichen. The Metropolitan Region of Santiago (MRS) has experienced a large growth in population in recent years and a rise in the standard of living. Therefore, its municipal solid waste (MSW) has almost doubled in 10 years. Data about the current situation of MSW management in MRS were collected during field research, interviews, field visits and by a systematic evaluation of existing documentary literature. The Integrative Sustainability Concept of the Helmholtz Association provided a conceptual framework for the study. The sustainability analysis showed that the largest deficits are in the current amount of MSW deposited at sanitary landfills without any pre-treatment, and the emission values of greenhouse gases associated with waste treatment and final disposal. To find out if and how the informal waste sector contributes to sustainability, experiences of organization of informal primary collectors in Latin America were analyzed. The key factors which have an influence on their working conditions were identified. These factors include the existence of a legal framework for the informal waste sector; the existence of alliances with production companies guaranteeing a reliable industrial market for secondary raw materials and expansion of activities beyond collection of recyclables. Key stakeholders included people from the public and the private sector, from the civil society and from NGOs. Three explorative scenarios were developed for the year 2030: Business as Usual (BAU), Collective Responsibility (CR), and Market Individualism (MI). Waste generation, waste composition and different practices of waste collection, recovery and treatment were taken into account for the scenarios formulation. The BAU scenario incorporated separate collection of biowaste, recyclable materials with some participation of organized primary collectors and an expansion of drop-off systems. The mechanical sorting of mixed waste was introduced. The utilization of landfill gas as an energy source was promoted and the production of biogas in anaerobic digestion plants was implemented. The CR scenario incorporated separate collection of biowaste, commitment to work together with the primary waste collectors and an expansion of drop-off systems. The mechanical and mechanical biological treatment of mixed waste was introduced. The utilization of landfill gas as an energy source is promoted and the production of biogas in anaerobic digestion plants was implemented. In the MI separate collection of biowaste and recyclable materials was irrelevant. An organization of the informal primary collectors did not take place. Mechanical sorting of mixed waste was introduced. Utilization of landfill gas as an energy source was promoted. The results showed that the generation flux of MSW is at least 50% larger in all scenarios in 2030 compared to the year 2007, exceeding the limit value proposed. The highest value (2.0 kg/(person•day) is obtained in the MI scenario, and the lowest (1.8 kg/(person•day)) in the CR scenario. Pre-treatment of mixed MSW collected is only achieved in the CR scenario with a value of 18%, however, the target value is not achieved. The highest greenhouse gas emission value is obtained in the MI scenario with 295 kg CO2eq/(person•year), the lowest value of 155 kg CO2-eq/(person•year) is obtained in the CR scenario; a value that is still very high in comparison with the suggested target. The largest recycling rate is obtained in the CR scenario (43%), which is better than the target value proposed, the lowest recycling rate is obtained in the MI scenario (20%). The income of primary collectors in comparison with the income of one individual household is improved significantly in the CR scenario (128%), in the MI scenario, earnings of primary collectors decreased to 51%. The share of GDP spent on MSW management is lower in 2030, compared to the year 2007, in all scenarios the largest value of 0.17% is obtained in the CR scenario, and the lowest value of 0.14% is obtained in the MI scenario. The results of the evaluation of the scenarios showed that the largest sustainability deficits are the amount of mixed MSW which undergoes pre-treatment, the greenhouse gas emissions associated to MSW treatment and disposal, as well as the share of GDP spent on MSW management. The results obtained suggested that an integration of several factors is required to increase sustainability. It is essential to strengthen and take advantage of the subsystems which are working within the waste management system, as in the case of the informal sector. In addition to the implementation of flexible treatment technologies which help to decrease negative environmental impacts. Moreover, the costs of these technologies should be affordable, allowing a better financial management.

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    https://dx.doi.org/10.18419/op...
    Doctoral thesis . 2011
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      https://dx.doi.org/10.18419/op...
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  • Of all the renewable resources, solar energy has the greatest potential for endingour reliance on fossil fuels. The solar energy that reaches the earth’s surface is 10,000 times the total energy consumption of the planet at any given time and yet we harness only 0.1% of this, mostly as solar-thermal energy. The major limitations of solar energy conversion processes are cost and storage. Strategies for addressing these issues have focused on advanced designs and new materials. Nanomaterials- materials with high surface-to-volume ratios, play a crucial role in the future of this industry. The work of this thesis involved a novel design for a cost-effective, water-splitting system that produces hydrogen - a storable fuel. The system designwas comprised of nanomaterials assembled on a microparticle. Thesis (PhD)--University of South Australia, 2016. Includes bibliographical references.

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  • Of all the renewable resources, solar energy has the greatest potential for endingour reliance on fossil fuels. The solar energy that reaches the earth’s surface is 10,000 times the total energy consumption of the planet at any given time and yet we harness only 0.1% of this, mostly as solar-thermal energy. The major limitations of solar energy conversion processes are cost and storage. Strategies for addressing these issues have focused on advanced designs and new materials. Nanomaterials- materials with high surface-to-volume ratios, play a crucial role in the future of this industry. The work of this thesis involved a novel design for a cost-effective, water-splitting system that produces hydrogen - a storable fuel. The system designwas comprised of nanomaterials assembled on a microparticle. Thesis (PhD)--University of South Australia, 2016. Includes bibliographical references.

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    Authors: Koch, Bernd;

    Eines der größten Probleme bei der kontrollierten Kernfusion ist die immense thermische Belastung der mit dem Plasma in Berührung kommenden Materialien. Um den Energiefluß aus dem Plasma auf eine möglichst große Fläche zu verteilen, werden die betroffenen Komponenten in der Regel so angebracht, da"s das magnetische Feld annähernd parallel zur Oberfläche verläuft. Im Rahmen dieser Arbeit wurden ein spezieller drehbarer Meßkopf zur winkelabhängigen Messung des Strom- und Energieflusses entwickelt und ausführliche experimentelle Untersuchungen zur Winkelabhängigkeit der Teilchen- und Energieflüsse auf eine Fläche durchgeführt. Zum Verständnis der zu Grunde liegenden Mechanismen wird basierend auf den Gyrationsbahnen der Teilchen ein analytisches Modell entwickelt und dessen qualitative Übereinstimmung mit den experimentellen Befunden festgestellt. Die Durchführung der Experimente erfolgte am Plasmagenerator PSI-2, einem linearen Divertor-Simulator mit einem moderaten magnetischen Feld. Der Aufbau des Meßkopfes als ebene Sonde in einer isolierten Fläche enspricht dabei in etwa der einer sogenannten ,,flush-mounted probe''''. Die äußeren Maße der Sonde sind dabei vergleichbar mit dem Ionengyroradius ri}. Während die Elektronen bei den Experimenten stark magnetisiert sind, variieren die Bedingungen für die Ionen zwischen unmagnetisiert und magnetisiert je nach Ionenmasse und Magnetfeldstärke. Bei den Experimenten wurden verschiedene Größen der Plasmarandschicht als Funktionen des Winkels zwischen der Oberflächennormale der Sonde und dem Vektor des magnetischen Feldes bestimmt. In fusion experiments, the energy flux to the target plates is an important issue. In order to spread the heat load, surfaces are usually designed to intersect magnetic field lines at very shallow angles. In the course of this work, a sensitive probe allowing simultaneous measurements of energy flux and current density as functions of a bias voltage was developed. Extensive experimental data on the particle and energy flux densities as functions of the angle between a surface and the confining magnetic field are provided. An analytical model is developed in order to reveal the physics involved; it is in good qualitative agreement with the experimental results. The experiments were conducted at the PSI-2 facility, a linear divertor simulator with moderate magnetic field strength. The probe was rotated in a spatially homogeneous plasma. The active area, a tungsten covered Peltier module, was immersed in a ceramic surface, closely resembling the geometry of a flush mounted probe. Its dimensions were comparable to the ion gyro radius ri. While the electrons were strongly magnetized, the ion conditions varied between unmagnetized and magnetized depending on the ion species. Sheath parameters were determined as functions of the angle alpha between the probe surface normal and the magnetic field.

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    MPG.PuRe
    Doctoral thesis . 2004
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    https://dx.doi.org/10.18452/15...
    Doctoral thesis . 2004
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      https://dx.doi.org/10.18452/15...
      Doctoral thesis . 2004
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    Authors: Koch, Bernd;

    Eines der größten Probleme bei der kontrollierten Kernfusion ist die immense thermische Belastung der mit dem Plasma in Berührung kommenden Materialien. Um den Energiefluß aus dem Plasma auf eine möglichst große Fläche zu verteilen, werden die betroffenen Komponenten in der Regel so angebracht, da"s das magnetische Feld annähernd parallel zur Oberfläche verläuft. Im Rahmen dieser Arbeit wurden ein spezieller drehbarer Meßkopf zur winkelabhängigen Messung des Strom- und Energieflusses entwickelt und ausführliche experimentelle Untersuchungen zur Winkelabhängigkeit der Teilchen- und Energieflüsse auf eine Fläche durchgeführt. Zum Verständnis der zu Grunde liegenden Mechanismen wird basierend auf den Gyrationsbahnen der Teilchen ein analytisches Modell entwickelt und dessen qualitative Übereinstimmung mit den experimentellen Befunden festgestellt. Die Durchführung der Experimente erfolgte am Plasmagenerator PSI-2, einem linearen Divertor-Simulator mit einem moderaten magnetischen Feld. Der Aufbau des Meßkopfes als ebene Sonde in einer isolierten Fläche enspricht dabei in etwa der einer sogenannten ,,flush-mounted probe''''. Die äußeren Maße der Sonde sind dabei vergleichbar mit dem Ionengyroradius ri}. Während die Elektronen bei den Experimenten stark magnetisiert sind, variieren die Bedingungen für die Ionen zwischen unmagnetisiert und magnetisiert je nach Ionenmasse und Magnetfeldstärke. Bei den Experimenten wurden verschiedene Größen der Plasmarandschicht als Funktionen des Winkels zwischen der Oberflächennormale der Sonde und dem Vektor des magnetischen Feldes bestimmt. In fusion experiments, the energy flux to the target plates is an important issue. In order to spread the heat load, surfaces are usually designed to intersect magnetic field lines at very shallow angles. In the course of this work, a sensitive probe allowing simultaneous measurements of energy flux and current density as functions of a bias voltage was developed. Extensive experimental data on the particle and energy flux densities as functions of the angle between a surface and the confining magnetic field are provided. An analytical model is developed in order to reveal the physics involved; it is in good qualitative agreement with the experimental results. The experiments were conducted at the PSI-2 facility, a linear divertor simulator with moderate magnetic field strength. The probe was rotated in a spatially homogeneous plasma. The active area, a tungsten covered Peltier module, was immersed in a ceramic surface, closely resembling the geometry of a flush mounted probe. Its dimensions were comparable to the ion gyro radius ri. While the electrons were strongly magnetized, the ion conditions varied between unmagnetized and magnetized depending on the ion species. Sheath parameters were determined as functions of the angle alpha between the probe surface normal and the magnetic field.

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    MPG.PuRe
    Doctoral thesis . 2004
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    https://dx.doi.org/10.18452/15...
    Doctoral thesis . 2004
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      https://dx.doi.org/10.18452/15...
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  • Authors: Dieter Sell; M. M. W. Etschmann; Jens Schrader;

    Fourteen yeast strains were screened for production of 2-phenylethanol from L-phenylalanine with molasses as carbon source. Up to 1 g 2-phenylethanol l-1 was obtained. Using oleyl alcohol as a second phase for in situ product removal to enhance the production of 2-phenylethanol increased the yield to about 3 g 2-phenylethanol l-1 at 35 degrees C. The most productive strains were Kluyveromyces marxianus CBS 600 and CBS 397.

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  • Authors: Dieter Sell; M. M. W. Etschmann; Jens Schrader;

    Fourteen yeast strains were screened for production of 2-phenylethanol from L-phenylalanine with molasses as carbon source. Up to 1 g 2-phenylethanol l-1 was obtained. Using oleyl alcohol as a second phase for in situ product removal to enhance the production of 2-phenylethanol increased the yield to about 3 g 2-phenylethanol l-1 at 35 degrees C. The most productive strains were Kluyveromyces marxianus CBS 600 and CBS 397.

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  • Authors: Aparicio, Jesus; Tenza-Abril, Antonio; Borg, Malcolm; Galea, John; +1 Authors

    Maltese agriculture faces great challenges due to the severe scarcity ofwater. Sufficientwater resources, in quantity and quality, are necessary to cover the demand in the production of wine grape, one of the most important crops in Maltese agriculture. But also, economic efficiency is essential in the grape cultivation. A Cost-Benefit Analysis (CBA) is defined for Maltese vineyards in the Siġġiewi region, considering two irrigation scenarios, irrigation with groundwater or “do-nothing”, comparedwith the “use non-conventional waters” from mixing water from a small desalination plant and groundwater. For the alternative ‘mixing desalinatedwater with groundwater’ it is possible to improve water availability and quality for vine crops, while increasing economic benefits for farmer. The results indicate a profitable project fromaminimumarea of 1 ha, but final benefit is highly dependent on the irrigated surface extension according to water price. Desalination, compared with other type of nonconventional water is considered the best option in this assessment with a small reverse osmosis (RO) desalination plant (120 m3 /day) for covering the irrigation needs.

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  • Authors: Aparicio, Jesus; Tenza-Abril, Antonio; Borg, Malcolm; Galea, John; +1 Authors

    Maltese agriculture faces great challenges due to the severe scarcity ofwater. Sufficientwater resources, in quantity and quality, are necessary to cover the demand in the production of wine grape, one of the most important crops in Maltese agriculture. But also, economic efficiency is essential in the grape cultivation. A Cost-Benefit Analysis (CBA) is defined for Maltese vineyards in the Siġġiewi region, considering two irrigation scenarios, irrigation with groundwater or “do-nothing”, comparedwith the “use non-conventional waters” from mixing water from a small desalination plant and groundwater. For the alternative ‘mixing desalinatedwater with groundwater’ it is possible to improve water availability and quality for vine crops, while increasing economic benefits for farmer. The results indicate a profitable project fromaminimumarea of 1 ha, but final benefit is highly dependent on the irrigated surface extension according to water price. Desalination, compared with other type of nonconventional water is considered the best option in this assessment with a small reverse osmosis (RO) desalination plant (120 m3 /day) for covering the irrigation needs.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Wit, Francisca;

    In Southeast Asia and Indonesia, land use change (LUC) occurs in the form of large-scale deforestation and peatland degradation for agricultural purposes, which causes terrestrial CO2 emissions from peat soils as a consequence of oxidation, subsidence and forest fires. However, the consequences of this peatland degradation for the aquatic and marine environment and carbon cycle are less well known. In the framework of the SPICE III a CISKA subproject 1, the impact of land use change in Indonesia was determined by the quantification of the inorganic and organic carbon fluxes and CO2 emissions from the rivers, estuaries and coastal ocean into the atmosphere as well as the marine carbonate system in order to develop sustainable mitigation strategies to reduce CO2 emissions. The findings of this PhD study bring attention to the fact that the impacts of tropical peatland degradation in Indonesia are not limited to direct CO2 emissions due to drainage and deforestation, but also greatly affect the carbon cycle of adjacent freshwater and marine environments through a variety of processes. By means of a mixing model it was shown that dissolved organic carbon leaching from disturbed peat soils has increased by 200% from 62 to 183 g m-2 yr-1 as a consequence of hydrological changes and secondary vegetation. Increased freshwater fluxes due to reduced evapotranspiration account for 38% of the increase in carbon leaching, whereas the labile leaf litter from secondary vegetation is responsible for the remaining 62% increase. Once the organic carbon has reached the rivers, it is either respired and emitted to the atmosphere (river outgassing) or exported to the coastal ocean (riverine carbon export). Dissolved organic carbon (DOC) and pCO2 concentrations in the rivers increase as the share of disturbed peatland coverage in the catchment increases as a consequence of increased carbon leaching and decomposition. Based on the regression between peat coverage and CO2 yield, the CO2 fluxes from rivers in Indonesia have been estimated as well as in Malaysia and extrapolated to Southeast Asia, and amount to 53.9 A /-12.4, 6.2A /-1.6 and 66.9A /-15.7 Tg C yr-1, respectively. However, these fluxes are rather moderate due to the short residence time of the river waters and the location of peat close to the coast, which shorten the time available for decomposition. Circa 53% of the carbon that enters the freshwater system in Southeast Asia is emitted as CO2 to the atmosphere, whereas the remaining 47% is exported to the coastal ocean. Based on total alkalinity (TA), dissolved inorganic carbon (DIC) and pCO2 measurements in the estuaries and coastal ocean of Sumatra, it was shown that the majority of the exported carbon is respired in the estuaries. Circa 62.7% of the exported, respired CO2 is emitted to the atmosphere, whereas 6.4% is assumed to be buried in the sediments and the remaining 30.6% is absorbed in the water column. Here, the respired CO2 contributes to ocean acidification and lowers the aragonite and calcite saturation states (I(c)AR / I(c)CA). This induces carbonate dissolution of sediments, but also coral reefs and other calcifying organisms and can therefore be viewed as the invisible carbon footprint, but is currently overlooked in climate mitigation strategy policies. In Indonesia, the terrestrial direct CO2 emissions due to LUC via secondary vegetation (10.9 Tg C yr-1), peat oxidation (109.9 Tg C yr-1) and forest fires (82.1 Tg C yr-1) amount to 192.0 Tg C yr-1. Carbon loss due to indirect emissions from the rivers (53.9 Tg yr-1, ref. (Wit et al. 2015)), estuaries and coastal ocean (49.4 Tg yr-1), as well as the invisible carbon footprint (24.1 Tg yr-1) and excluding the natural emissions from pristine peatlands (13.0 Tg C yr-1) amounts to 114.3 Tg C yr-1. Therefore, the total carbon loss due to LUC amounts to 306.3 Tg yr-1, which represents an increase of 60% with respect to the direct terrestrial emissions currently considered in greenhouse gas mitigation policies. With respect to the development of climate change mitigation strategies as one of the overarching goals of SPICE and CISKA, the advice is to include the aquatic and marine CO2 emissions, as well as the invisible carbon footprint in order to cover the carbon losses with respect to LUC in Indonesia. In addition, carbon leaching and fluvial carbon export should be reduced to mitigate the impact of ocean acidification and carbonate dissolution.

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    Authors: Wit, Francisca;

    In Southeast Asia and Indonesia, land use change (LUC) occurs in the form of large-scale deforestation and peatland degradation for agricultural purposes, which causes terrestrial CO2 emissions from peat soils as a consequence of oxidation, subsidence and forest fires. However, the consequences of this peatland degradation for the aquatic and marine environment and carbon cycle are less well known. In the framework of the SPICE III a CISKA subproject 1, the impact of land use change in Indonesia was determined by the quantification of the inorganic and organic carbon fluxes and CO2 emissions from the rivers, estuaries and coastal ocean into the atmosphere as well as the marine carbonate system in order to develop sustainable mitigation strategies to reduce CO2 emissions. The findings of this PhD study bring attention to the fact that the impacts of tropical peatland degradation in Indonesia are not limited to direct CO2 emissions due to drainage and deforestation, but also greatly affect the carbon cycle of adjacent freshwater and marine environments through a variety of processes. By means of a mixing model it was shown that dissolved organic carbon leaching from disturbed peat soils has increased by 200% from 62 to 183 g m-2 yr-1 as a consequence of hydrological changes and secondary vegetation. Increased freshwater fluxes due to reduced evapotranspiration account for 38% of the increase in carbon leaching, whereas the labile leaf litter from secondary vegetation is responsible for the remaining 62% increase. Once the organic carbon has reached the rivers, it is either respired and emitted to the atmosphere (river outgassing) or exported to the coastal ocean (riverine carbon export). Dissolved organic carbon (DOC) and pCO2 concentrations in the rivers increase as the share of disturbed peatland coverage in the catchment increases as a consequence of increased carbon leaching and decomposition. Based on the regression between peat coverage and CO2 yield, the CO2 fluxes from rivers in Indonesia have been estimated as well as in Malaysia and extrapolated to Southeast Asia, and amount to 53.9 A /-12.4, 6.2A /-1.6 and 66.9A /-15.7 Tg C yr-1, respectively. However, these fluxes are rather moderate due to the short residence time of the river waters and the location of peat close to the coast, which shorten the time available for decomposition. Circa 53% of the carbon that enters the freshwater system in Southeast Asia is emitted as CO2 to the atmosphere, whereas the remaining 47% is exported to the coastal ocean. Based on total alkalinity (TA), dissolved inorganic carbon (DIC) and pCO2 measurements in the estuaries and coastal ocean of Sumatra, it was shown that the majority of the exported carbon is respired in the estuaries. Circa 62.7% of the exported, respired CO2 is emitted to the atmosphere, whereas 6.4% is assumed to be buried in the sediments and the remaining 30.6% is absorbed in the water column. Here, the respired CO2 contributes to ocean acidification and lowers the aragonite and calcite saturation states (I(c)AR / I(c)CA). This induces carbonate dissolution of sediments, but also coral reefs and other calcifying organisms and can therefore be viewed as the invisible carbon footprint, but is currently overlooked in climate mitigation strategy policies. In Indonesia, the terrestrial direct CO2 emissions due to LUC via secondary vegetation (10.9 Tg C yr-1), peat oxidation (109.9 Tg C yr-1) and forest fires (82.1 Tg C yr-1) amount to 192.0 Tg C yr-1. Carbon loss due to indirect emissions from the rivers (53.9 Tg yr-1, ref. (Wit et al. 2015)), estuaries and coastal ocean (49.4 Tg yr-1), as well as the invisible carbon footprint (24.1 Tg yr-1) and excluding the natural emissions from pristine peatlands (13.0 Tg C yr-1) amounts to 114.3 Tg C yr-1. Therefore, the total carbon loss due to LUC amounts to 306.3 Tg yr-1, which represents an increase of 60% with respect to the direct terrestrial emissions currently considered in greenhouse gas mitigation policies. With respect to the development of climate change mitigation strategies as one of the overarching goals of SPICE and CISKA, the advice is to include the aquatic and marine CO2 emissions, as well as the invisible carbon footprint in order to cover the carbon losses with respect to LUC in Indonesia. In addition, carbon leaching and fluvial carbon export should be reduced to mitigate the impact of ocean acidification and carbonate dissolution.

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    Authors: Wong, Catherine;

    [Extract] The Fukushima nuclear disaster demonstrated the magnitude of devastation when energy security is prioritized over human security. No doubt, the task of balancing the two needs is immense and difficult trade-offs need to be made at different times. But policy decisions in these two domains cannot be made without adequate consultation with the public, consideration for their preferences, and a shared vision for the future.

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    Authors: Wong, Catherine;

    [Extract] The Fukushima nuclear disaster demonstrated the magnitude of devastation when energy security is prioritized over human security. No doubt, the task of balancing the two needs is immense and difficult trade-offs need to be made at different times. But policy decisions in these two domains cannot be made without adequate consultation with the public, consideration for their preferences, and a shared vision for the future.

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    Authors: Rocío Cupeiro Coto; Esther Morencos Martínez; María Álvarez Sánchez; Pedro José Benito Peinado; +1 Authors

    ResumenEl entrenamiento con cargas es una actividad anaeróbica glucolítica intensa y se ha comprobado que el error en las estimaciones del gasto energético en esta actividad varía entre un 13 y un 30%. El principal objetivo de este trabajo es describir la contribución anaeróbica de energía en un circuito con cargas. Doce hombres (20-26 años) y diecisiete mujeres (18-29 años) estudiantes de Ciencias de la Actividad Física y del Deporte realizaron un entrenamiento en circuito de cargas a 6 intensidades diferentes (entre el 30% y 80% de su 15RM). Durante la totalidad de los circuitos se registró el gasto energético aeróbico por calorimetría indirecta, la frecuencia cardiaca con pulsómetro Polar® y la concentración de lactato en sangre capilar para medir la contribución anaeróbica. El incremento que produjo la energía anaeróbica se situó entre el 5,1% y un máximo del 13,5%, lo que hace evidente que medir o no la contribución anaeróbica en el entrenamiento en circuito puede provocar un error medio del 9,65%. Existen diferencias significativas (PAbstractResistance training is an intense anaerobic glycolytic activity and has been shown that estimates of energy expenditure in this activity turn out into an error that varies between 13 and 30%. The main aim of this paper is to describe the anaerobic energy contribution in circuit weight training. Twelve men (20-26 years) and seventeen women (18-29 years) students in Science of Physical Activity and Sport performed circuit training at six different intensities (between 30% and 80% of 15RM). During all the circuits aerobic energy expenditure was registered by indirect calorimetry, heart rate with Polar® monitors and lactate concentration in capillary blood to measure the anaerobic contribution. The increased due to anaerobic energy was between 5,1% and a maximum of 13,5%, which clearly means that to measure or not the anaerobic contribution in circuit training can lead to an average error of 9,65%. There are significant differences (P

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    Authors: Rocío Cupeiro Coto; Esther Morencos Martínez; María Álvarez Sánchez; Pedro José Benito Peinado; +1 Authors

    ResumenEl entrenamiento con cargas es una actividad anaeróbica glucolítica intensa y se ha comprobado que el error en las estimaciones del gasto energético en esta actividad varía entre un 13 y un 30%. El principal objetivo de este trabajo es describir la contribución anaeróbica de energía en un circuito con cargas. Doce hombres (20-26 años) y diecisiete mujeres (18-29 años) estudiantes de Ciencias de la Actividad Física y del Deporte realizaron un entrenamiento en circuito de cargas a 6 intensidades diferentes (entre el 30% y 80% de su 15RM). Durante la totalidad de los circuitos se registró el gasto energético aeróbico por calorimetría indirecta, la frecuencia cardiaca con pulsómetro Polar® y la concentración de lactato en sangre capilar para medir la contribución anaeróbica. El incremento que produjo la energía anaeróbica se situó entre el 5,1% y un máximo del 13,5%, lo que hace evidente que medir o no la contribución anaeróbica en el entrenamiento en circuito puede provocar un error medio del 9,65%. Existen diferencias significativas (PAbstractResistance training is an intense anaerobic glycolytic activity and has been shown that estimates of energy expenditure in this activity turn out into an error that varies between 13 and 30%. The main aim of this paper is to describe the anaerobic energy contribution in circuit weight training. Twelve men (20-26 years) and seventeen women (18-29 years) students in Science of Physical Activity and Sport performed circuit training at six different intensities (between 30% and 80% of 15RM). During all the circuits aerobic energy expenditure was registered by indirect calorimetry, heart rate with Polar® monitors and lactate concentration in capillary blood to measure the anaerobic contribution. The increased due to anaerobic energy was between 5,1% and a maximum of 13,5%, which clearly means that to measure or not the anaerobic contribution in circuit training can lead to an average error of 9,65%. There are significant differences (P

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