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Observations with imaging atmospheric Cherenkov telescopes (IACTs) have enhanced our knowledge of nearby supernova (SN) remnants with ages younger than 500 yr by establishing Cassiopeia A and the remnant of Tycho’s SN as very-high-energy (VHE) γ-ray sources. The remnant of Kepler’s SN, which is the product of the most recent naked-eye SN in our Galaxy, is comparable in age to the other two, but is significantly more distant. If the γ-ray luminosities of the remnants of Tycho’s and Kepler’s SNe are similar, then the latter is expected to be one of the faintest γ-ray sources within reach of the current generation IACT arrays. Here we report evidence at a statistical level of 4.6σ for a VHE signal from the remnant of Kepler’s SN based on deep observations by the High Energy Stereoscopic System (H.E.S.S.) with an exposure of 152 h. The measured integral flux above an energy of 226 GeV is ∼0.3% of the flux of the Crab Nebula. The spectral energy distribution (SED) reveals a γ-ray emitting component connecting the VHE emission observed with H.E.S.S. to the emission observed at GeV energies with Fermi-LAT. The overall SED is similar to that of the remnant of Tycho’s SN, possibly indicating the same nonthermal emission processes acting in both these young remnants of thermonuclear SNe. Astronomy and astrophysics 662, A65 (2022). doi:10.1051/0004-6361/202243096 Published by EDP Sciences, Les Ulis

In this paper we present an optical characterization for quantum dot intermediate band solar cells (QDIBSCs). The cells were developed by growing a stack of ten InAs/GaAs QDs layers between p and n doped GaAs conventional emitters. Electroluminescence, EL, photoreflectance, PR, and transmission electron microscopy, TEM, were applied to the samples in order to test and characterize them optically. The results, derived from the application of the different techniques, showed a good correlation. TEM images revealed a very good structural quality of the QDs, which seem to evolve in shape-strain from the bottom to the top of the stack. Corresponding to the quality observed by TEM, strong signals from EL and PR resolved unambiguously the energy band diagram of the QDIBSCs. By fitting PR data we were able to indentify the coexistence of bands and discrete energy levels coming from the IB material. The PR data evidenced also a strong electric field over the dots, attributed to the space charge region created between the p-n emitters sandwiching the IB material. From EL results, we identified the predominantly radiative nature of the IB material related energy transitions. 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 298-301

The landscape of supply chain and logistics is changing at the fast past than ever due to digitalization. Everyday, new technologies are emerging and having impact on how logistics activities will be carried out. Furthermore, the acceptance of these technologies depends on the initial perception of stakeholders in logistics. This presentation outlines impact of nine various emerging technologies on future of logistics as perceived by experts in supply chain and logistics. - Results were presented during the 13th ITS European Congress special session.

Objetivo: Evaluar la viabilidad de la auditoría energética como herramienta de gestión en atención primaria, para mejorar la eficiencia energética y medioambiental de un centro de salud, disminuyendo sus costes de explotación. Método: Se realizaron 55 auditorías energéticas en centros de salud durante el periodo 2005-2010, de tamaño entre 500 y 3500 m², ubicados en zonas de salud de 3500 a 25.000 usuarios, construidos entre 1985 y 2007. Resultados: Se demuestra que con una inversión media de 11.601 € por centro de salud es posible disminuir el consumo energético en 10.801 kWh, ahorrando 2961 € anuales en un tiempo medio de amortización de 3,92 años y evitando la emisión de 7010kg de CO2. Conclusiones: La auditoría energética supone una herramienta práctica para evaluar y disminuir los gastos de explotación y mantenimiento, mejorando el confort en las instalaciones y colaborando en la preservación del medio ambiente.Objective: The aim of this study was to evaluate the viability of energy audit as a management tool in primary care to improve the energy efficiency and environmental performance of a health center by reducing its operating costs. Method: We conducted 55 energy audits in health centers from 2005-2010. The health centers were sized between 500 and 3,500 m², were located in health areas with 3,500 to 25,000 users, and were built between 1985 and 2007. Results: With an average investment of 11,601€ per site, energy consumption can be reduced by 10,801 kWh per year, saving 2,961€ with a mean payback period of 3.92 years, and preventing emission of 7,010kg of CO2. Conclusions: Energy auditing is a practical tool to reduce the operating and maintenance costs of health centers and of improving the comfort of the facilities.

The establishment of new oil palm plantations in Papua-Indonesia has greatly increased in the last years. The process of new plantation establishment involves land use change, which in many cases is directly related with the loss of primary climax forest. Papua has good climate conditions for oil palm cultivation due to high precipitation and rich in nutrients soils, as well as a large amount of available land; but its remoteness and political situation involve higher risks and costs for investors. The palm oil industry generates employment opportunities, potential for development of rural areas, as well as revenue redistribution to society in the form of taxes. On the other hand, land use change can be responsible for the loss of ecosystem services, loss of natural habitats and carbon emissions. Papua-Indonesia holds very deep and ancient tribal traditions, and its population in general opposes change. This study presents the issues related to the establishment of new oil palm plantations in Papua, Indonesia. The local and global consequences are reviewed. Factors that influence the decision-making process are identified in a strengths-weakness-opportunities-threats analysis. Proceedings of the 27th European Biomass Conference and Exhibition, 27-30 May 2019, Lisbon, Portugal, pp. 1611-1621

We consider next generation solar cells concepts those that have the potential to exceed the limiting efficiency calculated by Shockley and Queisser for single gap solar cells (40.7 %) and still have not been commercialized. Among these concepts, this paper deals with the multiple exciton generation (or impact ionization or multiple carrier generation) solar cell, the intermediate band solar cell and the hot carrier solar cell. These concepts were proposed theoretically more than ten years ago. In the last years, the number of experiments supporting the theories behind and paving the way towards their practical implementation has leaped forward. This work reviews these experimental advances. 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4-9

This study addresses the challenge of producing feedstocks for bioenergy and bio-based products in a non-land-dependent system based on the recently-developed concept of Green Floating Filter (GFF). In this system, cattails are grown on floating supports placed in eutrophic water bodies in order to form a biomass mat that contributes to water treatment; the produced biomass is fully harvested at the end of the growth cycle. In this work datasets of key parameters concerning GFF performance were built for the proof-of-concept of GFFs. Results highlighted the relationship between biomass production and water quality, with lower biomass production in the treatment with lowest COD. Biomass partitioning was slightly affected by the water quality, at the contamination levels studied; the submerged biomass represented 45.6% of the total biomass (dry mass) on average, partitioned into 79.5% rhizomes and 20.5% roots at the February harvest. The starch content of the submerged biomass varied with harvest date and biomass partitioning. Main conclusion was that the potential of GFF system for bioethanol and biobased products is high, but it clearly relies on the nutrient water level and the harvest date. Proceedings of the 27th European Biomass Conference and Exhibition, 27-30 May 2019, Lisbon, Portugal, pp. 207-212

The ButaNexT project aims to demonstrate the techno-economic feasibility of the conversion of two sustainable lignocellulosic feedstocks (wheat straw and miscanthus) available at EU level, into biobutanol through the integration of different technology developments. The project has ended recently and the main achievements of the consortium have been the following: (1) design, construction and operation of a micronizing pilot prototype for controlled biomass particle size production up to 0.5 mm with a more reduced energy consumption and able to be scalable to industrial size; (2) development of a flexible and easy to adapt two-step fractionation process based on the combination of the micronizing prototype with a continuous thermochemical pretreatment; (3) development of tailored enzyme cocktails (MetZyme® SUNO™) that address harsh process-specific conditions and facilitate improved hydrolysis of pretreated biomass to monosaccharides; (4) development of a Clostridial strain able to ferment cellulosic sugars effectively (target butanol yield > 0.25 g/g pure sugar) and having 20% higher butanol tolerance than baseline strain; (5) development of a patent-pending “In situ product recovery process” based on improved pervaporation fluxes obtained during fermentation that allows continuous operation; (6) validation of the technical performance of the individual stages cited above in a pilot facility using wheat straw as feedstock from handling to product recovery in a 100 L bioreactor; (7) testing of properties and performance of butanol as a blend component in both diesel and gasoline fuels and (8) calculation of GHG emissions of biobutanol in a number of different scenarios based on the use of wheat straw and miscanthus as feedstocks and for the provision of heat, electricity and waste water treatment. Proceedings of the 26th European Biomass Conference and Exhibition, 14-17 May 2018, Copenhagen, Denmark, pp. 984-990