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Pesquisa : N06.230.132.644 [Categoria DeCS]
Referências encontradas : 604 [refinar]
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[PMID]:29351554
[Au] Autor:Sabry AH; W Hasan WZ; Ab Kadir MZA; Radzi MAM; Shafie S
[Ad] Endereço:Department of Control and Automation, Faculty of Engineering, UPM, Serdang, Malaysia.
[Ti] Título:Field data-based mathematical modeling by Bode equations and vector fitting algorithm for renewable energy applications.
[So] Source:PLoS One;13(1):e0191478, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The power system always has several variations in its profile due to random load changes or environmental effects such as device switching effects when generating further transients. Thus, an accurate mathematical model is important because most system parameters vary with time. Curve modeling of power generation is a significant tool for evaluating system performance, monitoring and forecasting. Several numerical techniques compete to fit the curves of empirical data such as wind, solar, and demand power rates. This paper proposes a new modified methodology presented as a parametric technique to determine the system's modeling equations based on the Bode plot equations and the vector fitting (VF) algorithm by fitting the experimental data points. The modification is derived from the familiar VF algorithm as a robust numerical method. This development increases the application range of the VF algorithm for modeling not only in the frequency domain but also for all power curves. Four case studies are addressed and compared with several common methods. From the minimal RMSE, the results show clear improvements in data fitting over other methods. The most powerful features of this method is the ability to model irregular or randomly shaped data and to be applied to any algorithms that estimating models using frequency-domain data to provide state-space or transfer function for the model.
[Mh] Termos MeSH primário: Algoritmos
Modelos Teóricos
Energia Renovável/estatística & dados numéricos
[Mh] Termos MeSH secundário: Análise dos Mínimos Quadrados
Conceitos Matemáticos
Energia Solar/estatística & dados numéricos
Vento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180226
[Lr] Data última revisão:
180226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180120
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191478


  2 / 604 MEDLINE  
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[PMID]:29329349
[Au] Autor:Wohland J; Reyers M; Märker C; Witthaut D
[Ad] Endereço:Institute for Energy and Climate Research (IEK-STE), Forschungszentrum Jülich, Jülich, Germany.
[Ti] Título:Natural wind variability triggered drop in German redispatch volume and costs from 2015 to 2016.
[So] Source:PLoS One;13(1):e0190707, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Avoiding dangerous climate change necessitates the decarbonization of electricity systems within the next few decades. In Germany, this decarbonization is based on an increased exploitation of variable renewable electricity sources such as wind and solar power. While system security has remained constantly high, the integration of renewables causes additional costs. In 2015, the costs of grid management saw an all time high of about € 1 billion. Despite the addition of renewable capacity, these costs dropped substantially in 2016. We thus investigate the effect of natural climate variability on grid management costs in this study. We show that the decline is triggered by natural wind variability focusing on redispatch as a main cost driver. In particular, we find that 2016 was a weak year in terms of wind generation averages and the occurrence of westerly circulation weather types. Moreover, we show that a simple model based on the wind generation time series is skillful in detecting redispatch events on timescales of weeks and beyond. As a consequence, alterations in annual redispatch costs in the order of hundreds of millions of euros need to be understood and communicated as a normal feature of the current system due to natural wind variability.
[Mh] Termos MeSH primário: Energia Renovável/economia
Vento
[Mh] Termos MeSH secundário: Alemanha
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; VALIDATION STUDIES
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180113
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190707


  3 / 604 MEDLINE  
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[PMID]:29257355
[Au] Autor:Lane JD; Bigelow PL; Majowicz SE; McColl RS
[Ti] Título:Impacts of Industrial Wind Turbine Noise on Sleep Quality: Results From a Field Study of Rural Residents in Ontario, Canada.
[So] Source:J Environ Health;79(1):8-12, 2016 Jul.
[Is] ISSN:0022-0892
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The objectives of this study were to determine whether grid-connected industrial wind turbines (IWTs) are a risk factor for poor sleep quality, and if IWT noise is associated with sleep parameters in rural Ontarians. A daily sleep diary and actigraphy-derived measures of sleep were obtained from 12 participants from an IWT community and 10 participants from a comparison community with no wind power installations. The equivalent and maximum sound pressure levels within the bedroom were also assessed. No statistically significant differences were observed between IWT residents and non-IWT residents for any of the parameters measured in this study. Actigraphy and sleep diaries are feasible tools to understand the impact of IWTs on the quality of sleep for nearby residents. Further studies with larger sample sizes should be conducted to determine whether the lack of statistical significance observed here is a result of sample size, or reflects a true lack of association.
[Mh] Termos MeSH primário: Exposição Ambiental
Ruído/efeitos adversos
Energia Renovável/efeitos adversos
Transtornos do Sono-Vigília/etiologia
Sono
[Mh] Termos MeSH secundário: Actigrafia
Adulto
Idoso
Feminino
Seres Humanos
Masculino
Registros Médicos
Meia-Idade
Ontário
População Rural
Vento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171220
[St] Status:MEDLINE


  4 / 604 MEDLINE  
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[PMID]:29261252
[Au] Autor:Churasia A; Singh J; Kumar A
[Ti] Título:Production of biodiesel from soybean oil biomass as renewable energy source.
[So] Source:J Environ Biol;37(6):1303-07, 2016 11.
[Is] ISSN:0254-8704
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:Transesterification of vegetable oils with short-chain alcohols is used to produce biodiesel. In the present study, crude soybean oil was investigated on the basis of three principal variables, such as optimum reaction temperature (60?C), the amount of catalyst concentration from 0.5, 1.0, 1.5, 2.0 and 2.5%? and molar ratio of methanol 1:1, 1:2, 1:3, 1:4, 1:5 and 1:6, respectively affecting yield of biodiesel. Under optimum condition, at molar ratio 1:6 in the presence of 0.5% NaOH and 60°C reaction temperature and 350 rpm approximately 99.1% biodiesel yield was obtained.
[Mh] Termos MeSH primário: Biocombustíveis
Biomassa
Energia Renovável
Óleo de Soja/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Biofuels); 8001-22-7 (Soybean Oil)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180219
[Lr] Data última revisão:
180219
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171221
[St] Status:MEDLINE


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[PMID]:29189819
[Au] Autor:Gies E
[Ad] Endereço:Erica Gies is a freelance science writer based in British Columbia, Canada, and San Francisco, California.
[Ti] Título:The real cost of energy.
[So] Source:Nature;551(7682), 2017 11 30.
[Is] ISSN:1476-4687
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Dióxido de Carbono/economia
Política Ambiental/economia
Política Ambiental/legislação & jurisprudência
Modelos Econômicos
Energia Renovável/economia
[Mh] Termos MeSH secundário: Dióxido de Carbono/análise
Carvão Mineral/efeitos adversos
Carvão Mineral/economia
Desenvolvimento Econômico
Eletricidade
Poluição Ambiental/efeitos adversos
Poluição Ambiental/economia
Poluição Ambiental/legislação & jurisprudência
Poluição Ambiental/prevenção & controle
Seres Humanos
Internacionalidade
Mineração
Centrais Nucleares
Energia Renovável/legislação & jurisprudência
Rios
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coal); 142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180216
[Lr] Data última revisão:
180216
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171201
[St] Status:MEDLINE
[do] DOI:10.1038/d41586-017-07510-3


  6 / 604 MEDLINE  
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[PMID]:29186183
[Au] Autor:Schmitt P; Culloch R; Lieber L; Molander S; Hammar L; Kregting L
[Ad] Endereço:Marine Research Group, Queen's University Belfast, Belfast, Northern Ireland, United Kingdom.
[Ti] Título:A tool for simulating collision probabilities of animals with marine renewable energy devices.
[So] Source:PLoS One;12(11):e0188780, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The mathematical problem of establishing a collision probability distribution is often not trivial. The shape and motion of the animal as well as of the the device must be evaluated in a four-dimensional space (3D motion over time). Earlier work on wind and tidal turbines was limited to a simplified two-dimensional representation, which cannot be applied to many new structures. We present a numerical algorithm to obtain such probability distributions using transient, three-dimensional numerical simulations. The method is demonstrated using a sub-surface tidal kite as an example. Necessary pre- and post-processing of the data created by the model is explained, numerical details and potential issues and limitations in the application of resulting probability distributions are highlighted.
[Mh] Termos MeSH primário: Modelos Teóricos
Energia Renovável
Água do Mar
[Mh] Termos MeSH secundário: Algoritmos
Animais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180101
[Lr] Data última revisão:
180101
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171130
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0188780


  7 / 604 MEDLINE  
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[PMID]:28464284
[Au] Autor:Su H; Lin J; Wang Y; Chen Q; Wang G; Tan F
[Ad] Endereço:Chongqing Institute of Green and Interligent Technology, Chinese Academy of Science, 266, Fangzheng Avenue, Shuitu High-Tech Park, Beibei, Chongqing 400714, P. R. China.
[Ti] Título:Engineering Brevibacterium flavum for the production of renewable bioenergy: C4-C5 advanced alcohols.
[So] Source:Biotechnol Bioeng;114(9):1946-1958, 2017 09.
[Is] ISSN:1097-0290
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Biosynthesis of advanced biofuels by engineered non-natural microorganisms has been proposed to be the most promising approach for the replacement of dwindling fossil fuel resources. Brevibacterium flavum (Bf) is a model brevibacterium aerobe which lacks basic and applied research that could enable this species to produce biofuels. There are no reports regarding engineering this microorganism to produce advanced alcohols before. Here, for the first time, we developed the bacterium as a novel biosynthetic platform for advanced alcohols production via the mutagenesis and engineering to produce 2-ketoacids derived alcohols. In order to enhance the strain's capability of producing advanced alcohols, we preferentially improved intrinsic metabolism ability of the strain to obtain improved expression host (IEH) via generating mutagenesis libraries by whole cell mutagenesis (WCM). The IEH was determined via screening out the mutant strain with the highest production of branched-chain organic acids (BCOA) using high throughput screening method.. Subsequently, a novel vector system for Bf was established, and the corresponding biosynthetic pathway of directing carbon flux into the target advanced alcohols was recruited to make the bacterium possess the capability of producing advanced alcohols and further enhance the production using the IEH. Specifically, we generated bioengineered strains that were able to synthesize up to the highest 5362 and 4976 mg/L isobutanol, 1945 and 1747 mg/L 2-methyl-1-butanol (2 MB), and 785.34 and 781 mg/L 3-methyl-1-butanol (3 MB) from pure glucose and duckweed substrates, respectively. Our findings confirmed the feasibility and potential of using Bf as a novel biosynthetic platform to generate advanced biofuels with glucose and inexpensive renewable feedstock-duckweed as a fermentation substrate. Biotechnol. Bioeng. 2017;114: 1946-1958. © 2017 Wiley Periodicals, Inc.
[Mh] Termos MeSH primário: Álcoois/metabolismo
Biocombustíveis/microbiologia
Vias Biossintéticas/fisiologia
Brevibacterium flavum/fisiologia
Cetoácidos/metabolismo
Engenharia Metabólica/métodos
Energia Renovável
[Mh] Termos MeSH secundário: Álcoois/isolamento & purificação
Melhoramento Genético/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Alcohols); 0 (Biofuels); 0 (Keto Acids)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171226
[Lr] Data última revisão:
171226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE
[do] DOI:10.1002/bit.26324


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[PMID]:28452033
[Au] Autor:Amri F
[Ad] Endereço:University of Chartage, Faculty of Economic Sciences and Management of Nabeul, Street Hammamet, Mrezgua, 8000, Nabeul, Tunisia. fethiamri.fsegn@gmail.com.
[Ti] Título:Carbon dioxide emissions, output, and energy consumption categories in Algeria.
[So] Source:Environ Sci Pollut Res Int;24(17):14567-14578, 2017 Jun.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:This study examines the relation between CO emissions, income, non-renewable, and renewable energy consumption in Algeria during the period extending from 1980 to 2011. Our work gives particular attention to the validity of environmental Kuznets curve (EKC) hypothesis. The autoregressive distributed lag (ARDL) with break point method outcome demonstrates the positive effect of non-renewable type of energy on CO emissions consumption. On the contrary, the results reveal an insignificant effect of renewable energy on environment improvement. Moreover, the results accept the existence of EKC hypothesis but the highest gross domestic product value in logarithm scale of our data is inferior to the estimated turning point. Consequently, policy-makers in Algeria should expand the ratio of renewable energy and should decrease the quota of non-renewable energy consumption.
[Mh] Termos MeSH primário: Dióxido de Carbono/análise
Produto Interno Bruto
Energia Renovável
[Mh] Termos MeSH secundário: Argélia
Meio Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171215
[Lr] Data última revisão:
171215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-017-8984-7


  9 / 604 MEDLINE  
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[PMID]:28938011
[Au] Autor:Yan F; Xu K; Li D; Cui Z
[Ad] Endereço:School of Resources and Civil engineering, Northeastern University, Shenyang, P. R. China.
[Ti] Título:A novel hazard assessment method for biomass gasification stations based on extended set pair analysis.
[So] Source:PLoS One;12(9):e0185006, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Biomass gasification stations are facing many hazard factors, therefore, it is necessary to make hazard assessment for them. In this study, a novel hazard assessment method called extended set pair analysis (ESPA) is proposed based on set pair analysis (SPA). However, the calculation of the connection degree (CD) requires the classification of hazard grades and their corresponding thresholds using SPA for the hazard assessment. In regard to the hazard assessment using ESPA, a novel calculation algorithm of the CD is worked out when hazard grades and their corresponding thresholds are unknown. Then the CD can be converted into Euclidean distance (ED) by a simple and concise calculation, and the hazard of each sample will be ranked based on the value of ED. In this paper, six biomass gasification stations are introduced to make hazard assessment using ESPA and general set pair analysis (GSPA), respectively. By the comparison of hazard assessment results obtained from ESPA and GSPA, the availability and validity of ESPA can be proved in the hazard assessment for biomass gasification stations. Meanwhile, the reasonability of ESPA is also justified by the sensitivity analysis of hazard assessment results obtained by ESPA and GSPA.
[Mh] Termos MeSH primário: Algoritmos
Biomassa
Gases
Análise de Perigos e Pontos Críticos de Controle/métodos
Energia Renovável
[Mh] Termos MeSH secundário: Medição de Risco
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Gases)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171017
[Lr] Data última revisão:
171017
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170923
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185006


  10 / 604 MEDLINE  
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[PMID]:28880299
[Au] Autor:Kemfert C
[Ad] Endereço:Department at the German Institute of Economic Research (DIW Berlin) and professor of energy economics and sustainability at the Hertie School of Governance in Berlin, Germany.
[Ti] Título:Germany must go back to its low-carbon future.
[So] Source:Nature;549(7670):26-27, 2017 09 06.
[Is] ISSN:1476-4687
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Dióxido de Carbono/análise
Conservação de Recursos Energéticos/legislação & jurisprudência
Conservação de Recursos Energéticos/tendências
Política Ambiental/legislação & jurisprudência
Política Ambiental/tendências
Metas
Energia Renovável/legislação & jurisprudência
[Mh] Termos MeSH secundário: Automóveis
Carvão Mineral/economia
Carvão Mineral/provisão & distribuição
Carvão Mineral/utilização
Conservação de Recursos Energéticos/economia
Política Ambiental/economia
Governo Federal
Alemanha
Efeito Estufa/prevenção & controle
Efeito Estufa/estatística & dados numéricos
Cooperação Internacional
Invenções/economia
Invenções/tendências
Liderança
Energia Renovável/economia
Pesquisa/economia
Pesquisa/tendências
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coal); 142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171017
[Lr] Data última revisão:
171017
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170908
[St] Status:MEDLINE
[do] DOI:10.1038/549026a



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