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description Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2017 AustraliaPublisher:Elsevier BV Funded by:EC | MARSEC| MARSAuthors:Zhou, Y.;
Ma, J.;Zhou, Y.
Zhou, Y. in OpenAIREZhang, Y.;
Qin, B.; +6 AuthorsZhang, Y.
Zhang, Y. in OpenAIREZhou, Y.;
Ma, J.;Zhou, Y.
Zhou, Y. in OpenAIREZhang, Y.;
Qin, B.;Zhang, Y.
Zhang, Y. in OpenAIREJeppesen, E.;
Jeppesen, E.
Jeppesen, E. in OpenAIREShi, K.;
Brookes, J.D.;
Spencer, R.G.M.; Zhu, G.; Gao, G.;Brookes, J.D.
Brookes, J.D. in OpenAIREThis study highlights how Chinese economic development detrimentally impacted water quality in recent decades and how this has been improved by enormous investment in environmental remediation funded by the Chinese government. To our knowledge, this study is the first to describe the variability of surface water quality in inland waters in China, the affecting drivers behind the changes, and how the government-financed conservation actions have impacted water quality. Water quality was found to be poorest in the North and the Northeast China Plain where there is greater coverage of developed land (cities + cropland), a higher gross domestic product (GDP), and higher population density. There are significant positive relationships between the concentration of the annual mean chemical oxygen demand (COD) and the percentage of developed land use (cities + cropland), GDP, and population density in the individual watersheds (p < 0.001). During the past decade, following Chinese government-financed investments in environmental restoration and reforestation, the water quality of Chinese inland waters has improved markedly, which is particularly evident from the significant and exponentially decreasing GDP-normalized COD and ammonium (NH4+-N) concentrations. It is evident that the increasing GDP in China over the past decade did not occur at the continued expense of its inland water ecosystems. This offers hope for the future, also for other industrializing countries, that with appropriate environmental investments a high GDP can be reached and maintained, while simultaneously preserving inland aquatic ecosystems, particularly through management of sewage discharge.
PURE Aarhus Universi... arrow_drop_down http://dx.doi.org/10.1016/j.wa...Other literature typeData sources: European Union Open Data PortalThe University of Adelaide: Digital LibraryArticle . 2017Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.watres.2017.04.035&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu161 citations 161 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert PURE Aarhus Universi... arrow_drop_down http://dx.doi.org/10.1016/j.wa...Other literature typeData sources: European Union Open Data PortalThe University of Adelaide: Digital LibraryArticle . 2017Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.watres.2017.04.035&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2019 PortugalPublisher:Institute of Electrical and Electronics Engineers (IEEE) Authors:Yousra Ben Aissa;
Yousra Ben Aissa
Yousra Ben Aissa in OpenAIREAbdelmalik Bachir;
Abdelmalik Bachir
Abdelmalik Bachir in OpenAIREMohamed Khalgui;
Mohamed Khalgui
Mohamed Khalgui in OpenAIREAnis Koubaa;
+2 AuthorsAnis Koubaa
Anis Koubaa in OpenAIREYousra Ben Aissa;
Yousra Ben Aissa
Yousra Ben Aissa in OpenAIREAbdelmalik Bachir;
Abdelmalik Bachir
Abdelmalik Bachir in OpenAIREMohamed Khalgui;
Mohamed Khalgui
Mohamed Khalgui in OpenAIREAnis Koubaa;
Anis Koubaa
Anis Koubaa in OpenAIREZhiwu Li;
Ting Qu;Zhiwu Li
Zhiwu Li in OpenAIREhandle: 10400.22/17147
This paper deals with the medium between two reconfigurable sensor nodes characterized by radio interfaces that support multiple channels for exchanging real-time messages under energy constraints. These constraints are violated if the consumed energy in transmission is higher than the remaining quantity of energy. A reconfiguration, i.e., any addition or removal of tasks in devices and consequently of messages on the medium, can cause the violation of real-time or energy constraints at run time. To achieve a feasible scheduling in time (i.e., message deadlines will be respected) and energy (i.e., there is available energy) on the medium, we propose new dynamic solutions: Balance, Dilute, and a Combination of them to manage any addition or removal of messages. The proposed approach utilizes the energy harvesting techniques and the PowerControl algorithm to reduce the nonharvested consumed energy. The proposed strategies achieve significant improvement over existing methods and provide the highest percentage of adding messages, with a lower average in response time and energy consumption. They reach a percentage of success in adding the highest priority messages while meeting deadlines up to 85%.
Repositório Científi... arrow_drop_down Repositório Científico do Instituto Politécnico do PortoArticle . 2021Data sources: Repositório Científico do Instituto Politécnico do PortoIEEE Transactions on Systems Man and Cybernetics SystemsArticle . 2019 . Peer-reviewedLicense: IEEE CopyrightData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/tsmc.2019.2897166&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu12 citations 12 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
visibility 5visibility views 5 download downloads 4 Powered bymore_vert Repositório Científi... arrow_drop_down Repositório Científico do Instituto Politécnico do PortoArticle . 2021Data sources: Repositório Científico do Instituto Politécnico do PortoIEEE Transactions on Systems Man and Cybernetics SystemsArticle . 2019 . Peer-reviewedLicense: IEEE CopyrightData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/tsmc.2019.2897166&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2013Publisher:American Association for the Advancement of Science (AAAS) Funded by:EC | NANOANTENNAS, EC | LASERLAB-EUROPE, DFG | Photophysics of Synthetic...EC| NANOANTENNAS ,EC| LASERLAB-EUROPE ,DFG| Photophysics of Synthetic and Biological Multichromophoric SystemsAuthors:R. Hildner;
R. Hildner
R. Hildner in OpenAIRED. Brinks;
D. Brinks
D. Brinks in OpenAIREJ. B. Nieder;
R. J. Cogdell; +1 AuthorsJ. B. Nieder
J. B. Nieder in OpenAIRER. Hildner;
R. Hildner
R. Hildner in OpenAIRED. Brinks;
D. Brinks
D. Brinks in OpenAIREJ. B. Nieder;
R. J. Cogdell;J. B. Nieder
J. B. Nieder in OpenAIREN. F. van Hulst;
N. F. van Hulst
N. F. van Hulst in OpenAIREpmid: 23788794
Coherence in Photosynthesis It is unclear how energy absorbed by pigments in antenna proteins is transferred to the central site of chemical catalysis during photosynthesis. Hildner et al. (p. 1448 ) observed coherence—prolonged persistence of a quantum mechanical phase relationship—at the single-molecule level in light-harvesting complexes from purple bacteria. The results bolster conclusions from past ensemble measurements that coherence plays a pivotal role in photosynthetic energy transfer. Hayes et al. (p. 1431 , published online 18 April) examined a series of small molecules comprised of bridged chromophores that also manifest prolonged coherence.
Science arrow_drop_down http://dx.doi.org/10.1126/scie...Other literature typeData sources: European Union Open Data Portalhttp://dx.doi.org/DOI:10.1126/...Article . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1126/science.1235820&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu272 citations 272 popularity Top 1% influence Top 1% impulse Top 0.1% Powered by BIP!
more_vert Science arrow_drop_down http://dx.doi.org/10.1126/scie...Other literature typeData sources: European Union Open Data Portalhttp://dx.doi.org/DOI:10.1126/...Article . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1126/science.1235820&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 DenmarkPublisher:Elsevier BV The potential of renewable energy should be fully exploited in the transportation sector to achieve a cleaner production. Therefore, this paper proposes an on-grid hybrid hydrogen refueling and battery swapping station powered by wind energy. This novel concept can promote the development of low-carbon emission vehicles including hydrogen-based vehicle and battery electric vehicle. During the daily operation of the station, the multiple uncertainties may lead to a higher operational cost. To address this problem, a hybrid stochastic/distributionally robust optimization method is proposed to handle different uncertainties for the energy management problem. The first type of uncertainties can be depicted by a certain distribution, i.e. electricity price and wind power, which is processed by a stochastic optimization method. The second type of uncertainties is associated with human behaviors and is difficult to find its probability distribution, i.e. the hydrogen demand of hydrogen-based vehicles, so the second type is processed by a distributionally robust optimization method. The overall objective is to minimize the total operational cost of the station, which also considers the battery swapping station overstock punishment. Because a reasonable battery swapping scheduling can reduce the waiting time of users and operational cost of the station. The results indicate that the proposed method can effectively address the conservatism of solutions as its total operational cost is 4.4% lower than that of the hybrid stochastic/robust optimization method under a high confidence level.
Aalborg University R... arrow_drop_down Journal of Cleaner ProductionArticle . 2022 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.jclepro.2021.129954&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu34 citations 34 popularity Top 10% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Aalborg University R... arrow_drop_down Journal of Cleaner ProductionArticle . 2022 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.jclepro.2021.129954&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object , Article 2016 ItalyPublisher:IEEE Funded by:EC | FLEXMETEREC| FLEXMETERAuthors: VERDECCHIA, ANDREA;BRUNELLI, DAVIDE;
BRUNELLI, DAVIDE
BRUNELLI, DAVIDE in OpenAIRETINTI, FRANCESCO;
TINTI, FRANCESCO
TINTI, FRANCESCO in OpenAIREBARBARESI, ALBERTO;
+2 AuthorsBARBARESI, ALBERTO
BARBARESI, ALBERTO in OpenAIREVERDECCHIA, ANDREA;BRUNELLI, DAVIDE;
BRUNELLI, DAVIDE
BRUNELLI, DAVIDE in OpenAIRETINTI, FRANCESCO;
TINTI, FRANCESCO
TINTI, FRANCESCO in OpenAIREBARBARESI, ALBERTO;
BARBARESI, ALBERTO
BARBARESI, ALBERTO in OpenAIRETASSINARI, PATRIZIA;
TASSINARI, PATRIZIA
TASSINARI, PATRIZIA in OpenAIREBENINI, LUCA;
BENINI, LUCA
BENINI, LUCA in OpenAIREhandle: 11572/146804 , 11585/555071
Shallow Geothermal Systems (SGS) are widely used to provide low-cost heating and cooling of residential and commercial buildings. SGS can be an economically-viable solution even for commercial buildings, where controlled temperature is fundamental for the production processes. To assess the thermal resistance of the soil and the performance of a SGS, Thermal Response Tests (TRT) must be performed. TRT machines are today designed mainly for short term monitoring, for relatively deep SGS (up to 200 m) and for being used by expert operators. Lightweight, low-cost machines for both fast and long term, reliable and unattended TRT for very Shallow Geothermal Systems (vSGS) are not available today. This paper describes the design of a micro-TRT machine (mTRT) for vSGS, which is gaining interest in the civil engineering, environmental, energy and food chain sectors. The paper describes the features of the wireless monitoring system, the design choices to achieve the required accuracy and the software developed for adding remote control capability. Experimental validation in a real test field demonstrates the quality of measurements collected for analysing the TRT data.
IRIS - Institutional... arrow_drop_down http://dx.doi.org/10.1109/EESM...Conference object . 2016Data sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/eesms.2016.7504817&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu10 citations 10 popularity Top 10% influence Top 10% impulse Average Powered by BIP!
more_vert IRIS - Institutional... arrow_drop_down http://dx.doi.org/10.1109/EESM...Conference object . 2016Data sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/eesms.2016.7504817&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2015 SpainPublisher:Elsevier BV Authors:Mäkelä, Mikko;
Mäkelä, Mikko
Mäkelä, Mikko in OpenAIREBenavente Domenech, Verónica;
Benavente Domenech, Verónica
Benavente Domenech, Verónica in OpenAIREFullana, Andres;
Fullana, Andres
Fullana, Andres in OpenAIREAlthough hydrothermal carbonization of biomass components is known to be mainly governed by reaction temperature, consistent reports on the effect and statistical significance of process conditions on hydrochar properties are still lacking. The objective of this research was to determine the importance and significance of reaction temperature, retention time and solid load on the properties of hydrochar produced from an industrial lignocellulosic sludge residue. According to the results, reaction temperature and retention time had a statistically significant effect on hydrochar ash content, solid yield, carbon content, O/C-ratio, energy densification and energy yield as reactor solid load was statistically insignificant for all acquired models within the design range. Although statistically significant, the effect of retention time was 3-7 times lower than that of reaction temperature. Predicted dry ash-free solid yields of attained hydrochar decreased to approximately 40% due to the dissolution of biomass components at higher reaction temperatures, as respective oxygen contents were comparable to subbituminous coal. Significant increases in the carbon contents of hydrochar led to predicted energy densification ratios of 1-1.5 with respective energy yields of 60-100%. Estimated theoretical energy requirements of carbonization were dependent on the literature method used and mainly controlled by reaction temperature and reactor solid load. The attained results enable future prediction of hydrochar properties from this feedstock and help to understand the effect of process conditions on hydrothermal treatment of lignocellulosic biomass.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.apenergy.2015.06.022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu181 citations 181 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.apenergy.2015.06.022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal , Other literature type 2012 United Kingdom, ItalyPublisher:Elsevier BV Funded by:EC | PREMIUM ACTEC| PREMIUM ACTAuthors:ZAGO, MATTEO;
ZAGO, MATTEO
ZAGO, MATTEO in OpenAIRECASALEGNO, ANDREA;
CASALEGNO, ANDREA
CASALEGNO, ANDREA in OpenAIREC. Santoro;
C. Santoro
C. Santoro in OpenAIREMARCHESI, RENZO;
MARCHESI, RENZO
MARCHESI, RENZO in OpenAIREhandle: 10281/301600 , 11311/662809
Abstract Water transport control is the major issue of direct methanol fuel cell. High water flow rates through the fuel cell imply extra water feeding at the anode and flooding at the cathode. In the present work, water transport and flooding in the direct methanol fuel cell are investigated through both experimental and modeling analyses and an interpretation of such phenomena is proposed. The model is validated on the experimental data of two different fuel cells in an extensive range of operating conditions. The analysis elucidates that water transport through the cathode diffusion layer is determined by vapor diffusion, slightly affected by current density, and by liquid water permeation proportional to current density, that occurs when liquid pressure in the electrode exceeds a threshold value. To simulate the effects of cathode diffusion layer flooding two mechanisms must be considered simultaneously: superficial pore obstruction, proportional to liquid water concentration in cathode channel, and bulk pore obstruction, proportional to liquid water permeation. The modeling analysis proposes the correlations to reproduce the effects of cathode flooding and permits to discuss the onset and magnitude of such phenomenon and the influence of micro-porous layer.
BOA - Bicocca Open A... arrow_drop_down The University of Manchester - Institutional RepositoryArticle . 2012Data sources: The University of Manchester - Institutional Repositoryhttp://dx.doi.org/10.1016/j.jp...Other literature typeData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.jpowsour.2012.06.022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu30 citations 30 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert BOA - Bicocca Open A... arrow_drop_down The University of Manchester - Institutional RepositoryArticle . 2012Data sources: The University of Manchester - Institutional Repositoryhttp://dx.doi.org/10.1016/j.jp...Other literature typeData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.jpowsour.2012.06.022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2021 ItalyPublisher:Institute of Electrical and Electronics Engineers (IEEE) Authors:Zhou Y.;
Xie Y. -Z.;Zhang D. -Z.;
Zhang D. -Z.
Zhang D. -Z. in OpenAIREDong N.;
+2 AuthorsZhou Y.;
Xie Y. -Z.;Zhang D. -Z.;
Zhang D. -Z.
Zhang D. -Z. in OpenAIREDong N.;
Chen Y. -H.; Jing Y.;handle: 11583/2932674
Nanosecond-level transient electromagnetic disturbance (TED), including very fast transient overvoltage caused by operation of disconnectors, high-altitude electromagnetic pulse, and many other fast transients may interfere or even damage the electrical equipment. As one of the main overvoltage protective equipment, the protective performance of metal-oxide surge arresters (MOAs) under nanosecond-level TED should be investigated and then compared with that under microsecond-level TED, especially the lightning impulse. Based on a testing platform containing a 400-kV pulse generator with adjustable rise time from 5 to 100 ns, the behaviors of nonlinearity, fast impulse response, and converting impedances of three types of 10-kV MOAs under TED with different rise time were explored experimentally in this article. The peak residual voltages of 10-kV MOAs under TED with the rise time of 5 ns at 5 kA are 50.2–60.7% higher than those under the lightning impulse. The rise time of TED has significant influence on the peak voltage and impedance converting behaviors of MOAs. A circuit model of 10-kV MOAs under nanosecond-level TED is built and validated by experimental results, which can be applied in insulation coordination and design of protective devices against TED.
Publications Open Re... arrow_drop_down IEEE Transactions on Electromagnetic CompatibilityArticle . 2021 . Peer-reviewedLicense: IEEE CopyrightData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/temc.2020.3015248&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu17 citations 17 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert Publications Open Re... arrow_drop_down IEEE Transactions on Electromagnetic CompatibilityArticle . 2021 . Peer-reviewedLicense: IEEE CopyrightData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1109/temc.2020.3015248&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 DenmarkPublisher:Elsevier BV Danni Yang;Sien Li;
Mousong Wu; Hanbo Yang;Wenxin Zhang;
Wenxin Zhang
Wenxin Zhang in OpenAIREJi Chen;
Chunyu Wang; Siyu Huang; Ruoqing Zhang; Yunxuan Zhang;To mitigate the climate change-induced water shortage and realize the sustainable development of agriculture, drip irrigation, a more efficient water-saving irrigation method, has been intensively implemented in most arid agricultural regions in the world. However, compared to traditional border irrigation, how drip irrigation affects the biophysical conditions in the cropland and how crops physiologically respond to changes in biophysical conditions in terms of water, heat and carbon exchange remain largely unknown. In view of the above situation, to reveal the mechanism of drip irrigation in improving spring wheat water productivity, paired field experiments based on drip irrigation and border irrigation were conducted to extensively monitor water and heat fluxes at a typical spring wheat field (Triticum aestivum L.) in Northwest China during 2017–2020. The results showed that drip irrigation improved yield by 10.3 % and crop water productivity (i.e., yield-to-evapotranspiration-ratio) by 15.6 %, but reduced LAI by 16.9 % in contrast with border irrigation. Under drip irrigation, the lateral development of spring wheat roots was promoted by higher soil temperature combined with frequent dry-wet alternation in the shallow soil layer (0–20 cm), which was the basis for efficient absorption of water and fertilizer, as well as efficient formation of photosynthate. Meanwhile, drip irrigation increased net radiation and decreased latent heat flux by inhibiting leaf growth, thereby increased sensible heat, causing a higher soil temperature (+1.10 ℃) and canopy temperature (+1.11 ℃). Further analysis proved that soil temperature was the key factor affecting yield formation. Based on the above conditions, the decrease in leaf distribution coefficient (−0.030) led to the decrease in evapotranspiration (−5.7 %) and the increase in ear distribution coefficient (+0.029). Therefore, drip irrigation emphasized the role of soil moisture in the soil-plant-atmosphere continuum, enhanced crop activity by increasing field temperature, especially soil temperature, and finally improved yield and water productivity via carbon reallocation. The study revealed the mechanism of drip irrigation for improving spring wheat yield, and would contribute to improving Earth system models in representing agricultural cropland ecosystems with drip irrigation and predicting the subsequent biophysical and biogeochemical feedbacks to climate change.
PURE Aarhus Universi... arrow_drop_down European Journal of AgronomyArticle . 2023 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefUniversity of Copenhagen: ResearchArticle . 2023Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu19 citations 19 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert PURE Aarhus Universi... arrow_drop_down European Journal of AgronomyArticle . 2023 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefUniversity of Copenhagen: ResearchArticle . 2023Data sources: Bielefeld Academic Search Engine (BASE)add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2022 ItalyPublisher:Wiley Authors:Zefeng Chen;
Zefeng Chen
Zefeng Chen in OpenAIREWeiguang Wang;
Weiguang Wang
Weiguang Wang in OpenAIREAlessandro Cescatti;
Alessandro Cescatti
Alessandro Cescatti in OpenAIREGiovanni Forzieri;
Giovanni Forzieri
Giovanni Forzieri in OpenAIREAbstractClimate change alters surface water availability (WA; precipitation minus evapotranspiration, P − ET) and consequently impacts agricultural production and societal water needs, leading to increasing concerns on the sustainability of water use. Although the direct effects of climate change on WA have long been recognized and assessed, indirect climate effects occurring through adjustments in terrestrial vegetation are more subtle and not yet fully quantified. To address this knowledge gap, here we investigate the interplay between climate‐induced changes in leaf area index (LAI) and ET and quantify its ultimate effect on WA during the period 1982–2016 at the global scale, using an ensemble of data‐driven products and land surface models. We show that ~44% of the global vegetated land has experienced a significant increase in growing season‐averaged LAI and climate change explains 33.5% of this greening signal. Such climate‐induced greening has enhanced ET of 0.051 ± 0.067 mm year−2 (mean ± SD), further amplifying the ongoing increase in ET directly driven by variations in climatic factors over 36.8% of the globe, and thus exacerbating the decline in WA prominently in drylands. These findings highlight the indirect impact of positive feedbacks in the land–climate system on the decline of WA, and call for an in‐depth evaluation of these phenomena in the design of local mitigation and adaptation plans.
Flore (Florence Rese... arrow_drop_down Global Change BiologyArticle . 2022 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu50 citations 50 popularity Top 10% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Flore (Florence Rese... arrow_drop_down Global Change BiologyArticle . 2022 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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