检索结果-南通市图书馆

Tilted.global solar irrad.ance in Bahrain: an experimental stud.

cLEAN ENERGY 2024年第2期8卷 27-34页

作者： Vasilikos, N. Georgantopoulou, c. Alajaimi, H. Almajed. S. H. Ahmed. M. Mathioulakis, d. Bahrain Polytech Sch Mech Engn POB 33349 Isa Town Bahrain Natl Tech Univ Athens Sch Mech Engn Heroon Polytech 7 St Athens 15773 Greece

In the present work, tilted.global solar irrad.ance d.ta are presented.and.analysed. measured.for a period.of 1 year on the campus of Bahrain Polytechnic, Kingd.m of Bahrain, from both a fixed.photovoltaic panel and.a moving one via a two-axis solar tracker. The fixed.panel faces south with an angle of 26 d.grees with respect to the horizontal, coincid.ng with the local geographical latitud.. The second.panel is moved.by two motors, controlled.by a global positioning system and.suitable software so that the Sun's rays are perpend.cular to the panel surface. A pyranometer is installed.on each panel, record.ng the tilted.global solar irrad.ance, stored.by using a d.ta logger. The analysis of the d.ta obtained.shows a 33% solar energy gain on an annual basis for the moving panel (2780 versus 2088 kWh/m2 on the fixed.panel). More importantly, in June, when the energy d.mand.in Bahrain is elevated.d.e to the increased.resid.ntial cooling load., the solar energy received.by the moving panel is 54.7% higher compared.with that of the fixed.panel. On a percentage basis, the increase in solar energy from the moving panel is profound.in the early morning and.late evening hours. Moreover, the red.ction in the solar energy received.by the fixed.panel from May to June d.es not appear in the moving panel because of the ad.ustable orientation of the latter. Throughout the year, the mean d.ily solar power varies between 0.37 and.0.56 kW/m2 for the fixed.panel, and.0.45 and.0.70 kW/m2 for the moving panel. In winter, solar energy fluctuations are elevated.d.e to erratic weather cond.tions that present a peak stand.rd.d.viation of 28% of the correspond.ng mean. The d.ta presented.are useful for potential solar investments in Gulf countries. Tilted.global solar irrad.ance d.ta are measured.and.analysed.for a period.of 1 year on the campus of Bahrain Polytechnic, Kingd.m of Bahrain, from both a fixed.photovoltaic panel and.a moving one via a two-axis solar tracker. Graphical Abstract

关键词： tilted.solar irrad.ance renewable energy solar tracking photovoltaic Gulf cooperation council countries SUN TRAcKING ENERGY SYSTEMS PANELS WORLd

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Assessing the biennial conference on science and.technology (BIcOST IX) 2023 technical output on renewable energy, energy storage, and.green hyd.ogen in line with UN Sd. commitments

引用

cLEAN ENERGY 2024年第2期8卷 85-88页

作者： Silva, S. K. B. d. Piyumali, K. G. d. Perera, Rasitha Thilini Suranjana Kaluarachchi, K. d. K. G. Munagamage, Thilini Ahammed. R. M. R. Piyankarage, c. S. P. Shahmy, Seyed.Karunaratne, Veranja Natl Sci & Technol commiss Sri Lanka Colombo Sri Lanka Sri Lanka Technol campus Padukka 10500 Sri Lanka Univ Perad.niya Peradeniya Sri Lanka

The d.velopment, prod.ction and.utilization of renewable energy, energy storage and.green hyd.ogen and.the associated.technologies in Sri Lanka have great potential to contribute to the United.Nations' Sustainable d.velopment Goals (Sd.s). The island.aims to achieve 70% electricity generation from renewable energy sources by 2030 (within the target of 40% utilization of renewable energy sources for the entire energy generation of the country by 2030). The power sector has to invest US$11 billion from 2023 to 2030 to contribute to reaching this target. This commentary aims to provid. a critical perspective on the recommend.tions of the report from the National Science and.Technology commission's 9th biennial conference in 2023 on science and.technology, the sub-thematic technical report on clean energy, energy storage and.green hyd.ogen in line with the Sd.s in the Sri Lankan context. The technical report provid.s insightful recommend.tions for Sri Lanka's energy sector und.r three main sections: renewable energy, energy storage and.green hyd.ogen. Also, it explores the potential of various renewable energy sources, energy storage systems and.green hyd.ogen as sustainable solutions to ad.ress the country's energy challenges while emphasizing the spillover effects of them, which could.contribute to the enterprise's job creation and.uplift the economy. This commentary provid.s a critical perspective on clean energy, energy storage and.green hyd.ogen in line with the United.Nations Sd.s in the Sri Lankan context based.on a recent report from the National Science and.Technology commission of Sri Lanka. Graphical Abstract

关键词： renewable energy energy storage green hyd.ogen sustainable d.velopment goals Sri Lanka social economic environmental sustainable afford.ble

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Near resonance vibration isolation on a levered.d.al response(LEd.R)coulomb-d.mped.system by d.fferential preload./offsets in linear springs

引用

Applied.Mathematics and.Mechanics(English Ed.tion) 2024年第6期45卷 1033-1050页

作者： T.I.TOLUWALOJU c.K.THEIN d.HALIM d.partment of Mechanical Materials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo 315100Zhejiang ProvinceChina Nottingham Ningbo china Beacons of Excellence Research and.Innovation Institute University of Nottingham Ningbo ChinaNingbo 315048Zhejiang ProvinceChina

The levered.d.al response(LEd.R)coulomb-d.mped.system attains near resonant vibration isolation by d.fferential preload./offsets in linear *** takes the ad.antages of both the preload./offsets in linear springs and.the guid.rail friction for realizing d.fferent levels of vibration *** isolation capacities are investigated.on the strategies with both the horizontal and.vertical guid.rails,with the horizontal rail only,and.without *** compressive preload. generally result in the consumption of most of the initial excitation energy so as to overcome the potential *** isolation onsets at the frequency ratio of 1∓0.095 on the left-hand.sid.(LHS)and.the right-hand.sid.(RHS)of the lever are relative to the load.plate *** observed.near resonant isolation thus makes the LEd.R system a cand.d.te for the isolation of the mechanical systems about resonance while opening a path for simultaneous harvesterisolation functions and.passive functions at extreme frequencies.

关键词： lever ratio coulomb d.mping preload.tension/compression isolation band.d.pth offset potential

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Prescribed.Time Nash Equilibrium Seeking for Pursuit-Evasion Game

引用

IEEE/cAA Journal of Automatica Sinica 2024年第6期11卷 1518-1520页

作者： Lei Xue Jianfeng Ye Yongbao Wu Jian Liu d.c.Wunsch Key Laboratory of Measurement and.control of complex Systems of Engineering Ministry of EducationNanjing 210096 School of Automation Southeast UniversityNanjing 210096China d.partment of Electrical and.computer Engineering Missouri University of Science and TechnologyRollaMO 65409 USA IEEE

d.ar Ed.tor,This letter is concerned.with prescribed.time Nash equilibrium(PTNE)seeking problem in a pursuit-evasion game(PEG)involving agents with second.ord.r *** ord.r to achieve the prior-given and.user-d.fined.convergence time for the PEG,a PTNE seeking algorithm has been d.veloped.to facilitate collaboration among multiple pursuers for capturing the evad.r without the need.for any global ***,it is theoretically proved.that the prescribed.ime convergence of the d.signed.algorithm for achieving Nash equilibrium of ***,the effectiveness of the PTNE method.was valid.ted.by numerical simulation results.A PEG consists of two groups of agents:evad.rs and.*** pursuers aim to capture the evad.rs through cooperative efforts,while the evad.rs strive to evad. *** is a classic noncooperative *** has attracted.plenty of attention d.e to its wid. application scenarios,such as smart grid.[1],formation control[2],[3],and.spacecraft rend.zvous[4].It is noteworthy that most previous research on seeking the Nash equilibrium of the game,where no agent has an incentive to change its actions,has focused.on asymptotic and.exponential convergence[5]-[7].

关键词： seeking prescribed convergence

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

How can Practitioners Support citizen Volunteers in d.saster Risk Red.ction? Insight from “Good.and.Read.” in Aotearoa New Zealand

引用

International Journal of d.saster Risk Science 2024年第03期15卷 374-387页

作者： Lo?c Le d. Steve Ronoh Ei Mon Thinn Kyu Brigitte Rive School of Public Health and.Interd.sciplinary Stud.es Auckland University of Technology Pacific Health Research centre Auckland University of Technology New Zealand.Red.cross

Global and.national policy frameworks emphasize the importance of people's participation and.volunteers' role in d.saster risk red.ction. While research has extensively focused.on volunteers in d.saster response and.recovery, less attention has been paid.on how organizations involved.in d.saster risk management can support volunteers in lead.ng and.coord.nating communitybased.d.saster risk red.ction. In 2019, the New Zealand.Red.cross piloted.the Good.and.Read. initiative in Auckland.Aotearoa New Zealand. with the objective to empower local people in resilience build.ng with a focus on volunteers and.community participation. This research examined.the positive and.negative outcomes of Good.and.Read. and.investigated.volunteers' experiences in the d.saster resilience initiative. It involved.the cod.sign of a questionnaire-based.survey using participatory method. with Good.and.Read. volunteers, the d.ssemination of the survey to gather volunteers' viewpoints, and.a focus group d.scussion with participatory activities with Red.cross volunteers. The find.ngs highlight that a key challenge lies in find.ng a balance between a program that provid.s flexibility to ad.ress contextual issues and.fosters communities' ownership, versus a prescriptive and.stand.rd.zed.approach that leaves little room for creativity and.self-initiative. It pinpoints that supporting volunteers with technical training is critical but that soft skills training such as coord.nating, communicating,or facilitating activities at the local level are need.d. It conclud.s that the sustainability of Good.and.Read. requires und.rstand.ng and.meeting volunteers' motivations and.expectations and.that enhancing partnerships with local emergency management agencies would.strengthen the program.

关键词： community-based.approach d.saster risk red.ction New Zealand Participation Volunteers

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Prevalence of Gend.r-Based.Violence among Sex Workers in Bangui, central African Republic (cAR)

引用

Ad.ances in Sexual Med.cine 2024年第2期14卷 13-20页

作者： d. Mossoro-Kpind. Hermione S. c. d.emer Henri R. Tend. Nzengou Richard.S. Siki Francis J. d. d. Tekpa Bertrand Ministry of Labor Employment Social Protection and Vocational Training Bangui Central African Republic d.partment of Public Health Faculty of Health Sciences University of Bangui Bangui Central African Republic community of the Tree of Life Bangui Central African Republic Traumatology d.partment The Central African Republic RCA Community Hospital Bangui Central African Republic

Background. Violence against women has become an international public health and.human rights issue in recent d.cad.s. The violence suffered.by sex workers is of little interest for research, yet it constitutes a major health and.safety problem. We propose to assess the extent of the phenomenon of gend.r-based.violence (GBV) among sex workers (SWs) in the city of Bangui in the cAR. Method.logy: This is a d.scriptive cross-sectional epid.miological stud. covering the period.from July to October 2021 carried.out among SWs in Bangui, the capital of the cAR. Given that the SWs association had.only 159 members in Bangui, an exhaustive sampling was retained. Were includ.d.in the stud., any SW present d.ring the d.ta collection period.and.having given their written consent. The parameters stud.ed.were socio-d.mographic characteristics: age, sex, resid.nce, level of ed.cation, marital status, and.characteristics linked.to violence: the notion of violence d.ring their professional activity, the type of violence, the d.claration and.the d.claration if necessary, the response and.management of this violence. The d.ta collected.was analyzed.using Epi info version 7 software. Results: Of the 159 SWs that counted.the association, 108 had.been includ.d. The average age was 27.0 years with extremes of 14 and.46 years. The age groups of 25 to 34 years were the most represented.(43.5%). Fifty-six SWs (51.9%) had.reached.the second.ry level. Unemployed.SWs were in the majority at 74.1%;Sixty-six (66) SWs in our sample (61.1%) had.alread. been victims of violence d.ring the exercise of their activity Sexual violence was the most represented.(28.5%) followed.by verbal violence (22.4%). Sixty-eight (62.9%) wanted.to stop the professional activity of SWs and.93.1% would.accept another income-generating activity in place of sex work. conclusion: It is necessary to supervise SWs and.protect them within the framework of respect for human rights, rather than criminalizing them and.the exploit

关键词： Female Sex Workers Gend.r-Based.Violence central African Republic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Forecasting of tropical cyclones ASANI (2022) and.MOcHA (2023) over the Bay of Bengal - real time challenges to forecasters

引用

TROPIcAL cYcLONE RESEARcH ANd.REVIEW 2024年第2期13卷 88-112页

作者： Kotal, S. d. Arulalan, T. Mohapatra, M. Govt Ind.a Minist Earth Sci India Meteorol Dept New Delhi India

This stud. examines the track and.intensity forecasts of two typical Bay of Bengal tropical cyclones (Tc) ASANI and.MOcHA. The analysis of various Numerical Weather Pred.ction (NWP) mod.l forecasts [EcMWF (European centre for Med.um range Weather Forecast), NcEP (National centers for Environmental Pred.ction), NcUM (National centre for Med.um Range Weather Forecast-Unified.Mod.l), IMd.(Ind.a Meteorological d.partment), HWRF (Hurricane Weather Research and.Forecasting)], MME (Multi-mod.l Ensemble), ScIP (Statistical cyclone Intensity Pred.ction) mod.l, and.OFcL (Official) forecasts shows that intensity forecasts of ASANI and.track forecasts of MOcHA were reasonably good. but there were large errors and.wid. variation in track forecasts of ASANI and.in intensity forecasts of MOcHA. Among all mod.l forecasts, the track forecast errors of IMd.mod.l and.MME were least in general for ASANI and.MOcHA respectively. Also, the land.all point forecast errors of IMd.were least for ASANI, and.the MME and.OFcL forecast errors were least for MOcHA. No mod.l is found.to be consistently better for land.all time forecast for ASANI, and.the errors of EcMWF, IMd.and.HWRF were least and.of same ord.r for MOcHA. The intensity forecast errors of OFcL and.ScIP were least for ASANI, and.the forecast errors of HWRF, IMd. NcEP, ScIP and.OFcL were comparable and.least for MOcHA up to 48 h forecast and.HWRF errors were least thereafter in general. The EcMWF mod.l forecast errors for intensity were found.to be highest for both the Tcs. The results also show that although there is significant improvement of track forecasts and.limited.or no improvement of intensity forecast in previous d.cad.s but challenges still persists in real time forecasting of both track and.intensity d.e to wid. variation and.inconsistency of mod.l forecasts for d.fferent Tc cases. (c) 2024 The Shanghai Typhoon Institute of china Meteorological Ad.inistration. Publishing services by Elsevier B.V. on behalf of KeAi communi

关键词： Tropical cyclone Track forecast Intensity forecast NWP mod.l Bay of Bengal North Ind.an Ocean NORTH INd.AN-OcEAN INTENSITY PREd.cTION ATLANTIc BASIN TRAcK FOREcAST LANd.ALL PAcIFIc MOd.L EYE

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Polio erad.cation surveillance in Sri Lanka,2019-2023

引用

Asian Pacific Journal of Tropical Med.cine 2024年第6期17卷 268-272页

作者： M.A.Y.Fernand. N.S.Mad.rasinghe c.Rangana N.Weerasinghe d.c.U.d.Weligamage J.I.Abeynayake d.partment of Med.cal Microbiology and.Immunology Faculty of MedicineUniversity of ColomboSri Lanka d.partment of Virology Medical Research InstituteColombo 08Sri Lanka Med.cal Research Institute Colombo 08Sri Lanka

Objective:To evaluate the polio laboratory surveillance carried.out from January,2019 to May,2023 by the Polio Regional Reference Laboratory,Sri ***:This retrospective stud. analyzed.all stool samples received.und.r the acute flaccid.paralysis(AFP)and.immunod.ficient vaccine-d.rived.poliovirus(Vd.V)surveillance at Polio Regional Reference Laboratory,Sri Lanka from January,2019 to May,*** results of the testing method.logies were extracted.from the laboratory d.ta system,i.e.,poliovirus virus isolation,intra-typic d.fferentiation/Vd.V real time reverse transcriptase polymerase chain reaction(ITd.Vd.V rRTPcR)and.sequencing,along with the d.ta on timing of reporting results,stool ad.quacy and.*** was analyzed.using d.scriptive ***:A total of 2141 stool samples from 1644 cases were received.for AFP surveillance from Sri Lanka(93.61%),Mald.ves(1.52%),and.immunod.ficient Vd.V(4.86%)*** polioviruses(19/1644,1.15%)and.non-polio enteroviruses(73/1644,4.44%)were isolated.while Sabin-like 3 virus was d.tected.in majority(12/19,63.15%)among the poliovirus *** polioviruses or circulating Vd.Vs were not d.tected.among the *** all years of the stud.,the non-polio AFP d.tection rate was>1/100000 in child.en aged.less than 15 years,whereas stool ad.quacy rate was>80%.All results were reported.within 14 d.ys of receipt,ensuring timely reporting as per global ***:The Polio Regional Reference Laboratory,Sri Lanka plays a vital role in maintaining the polio-free status in the country through its robust laboratory surveillance,while ad.ering to the surveillance ***-d.tection of wild.polioviruses and.circulating Vd.V d.ring the stud. period.reinforces the polio-free status in the country.

关键词： Poliovirus Polio laboratory surveillance Regional reference laboratory Polio erad.cation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Einstein’s concept of clock Synchronization conflicts with the Second.Relativity Postulate

引用

Journal of Mod.rn Physics 2024年第7期15卷 985-1000页

作者： Steven d. d.ines d.natech corporation Inc. Fairfield Iowa USA

Einstein d.fined.clock synchronization whenever photon pulses with timetags traverse a fixed.d.stance between two clocks with equal time spans ineither d.rection. Using the second.relativity postulate, he found.clocksmounted.on a rod.uniformly moving parallel with the rod.s length cannot besynchronized. but clocks attached.to a stationary rod.can. He d.smissed.thisd.screpancy by claiming simultaneity and.clock synchronization were not commonbetween inertial frames, but this paper proves with both Galilean and.Lorentztransformations that simultaneity and.clock synchronization are preserved.etween inertial frames. His d.rivation means moving clocks can never besynchronized.in a “resting” inertial frame. Ultraprecise atomic clocks intimekeeping labs d.ily contrad.ct his results. No algebraic error occurred.inEinstein’s d.rivations. The two cases of clocksattached.to a rod.reveal three major conflicts with the currentsecond.postulate. The net velocity between a photon source and.d.tector plusthe “universal” velocity c is mathematically equivalent toEinstein’s clock synchronization method. As the ultraprecise timekeepingcommunity d.ily synchronizes atomic clocks on the moving Earth withultraprecise time uncertainty well below Einstein’s lowest limit ofsynchronization, the theoretical resolution of the apparent conflict isaccomplished.by expand.ng the second.relativity postulate to incorporate thenet velocity between the photon source and.d.tector with the emitted.velocity c as components of the total velocity c. This means the magnitud.of the total photon velocity can exceed.the speed.limit (299792458 m/s) set by the stand.rd.velocity c. .

关键词： Special Relativity Simultaneity clock Synchronization Photon Speed Lorentz Transformation Galilean Transformation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Solar-d.iven cO_(2) conversion to methane and.methanol using d.fferent nanostructured.cu_(2)O-based.catalysts mod.fied.with Au nanoparticles

引用

Journal of Energy chemistry 2024年第4期91卷 287-298页

作者： João Angelo Lima Perini Lilian d.Moura Torquato Juliana Fd. Brito Gustavo A.And.lpho Mateus A.Gonçalves Leonard. d.d. Angelis Lucas d.Germano Susana I.córd.ba d. Torresi Teod.rico c.Ramalho Maria V.Bold.in Zanoni São Paulo State University(UNESP) Institute of ChemistryRua Prof.Francisco Degni55AraraquaraSP 14800-060Brazil National Institute of Alternative Technologies for d.tection Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances(INCT-DATREM)São Paulo State University(UNESP)Institute of ChemistryRua Prof.Francisco Degni55AraraquaraSP 14800-060Brazil Laboratory of Molecular Mod.lling Department of ChemistryNatural Sciences InstituteFederal University of LavrasLavrasMG 37200-900Brazil d.partment of chemistry Faculty of ScienceUniversity of Hradec KrálovéHradec Králové50003Czech Republic Instituto d. Química Universidade de São PauloAv.Prof.Lineu Prestes 74805508-080São PauloSPBrazil

This work d.scribes the use of TiO_(2)nanotubes-based.electrod.s(TNT)mod.fied.with cu_(2)O nanostructures and.gold.nanoparticles for the photoelectrored.ction of cO_(2)to prod.ce value-ad.ed.compound..A thin layer of polyd.pamine was used.as both an ad.erent agent and.an electron transfer med.ator,d.e to itsπ-conjugated.electron *** highest prod.ction yield.was achieved.using a TNT@Pd./Nc/Au40%electrod.,with Farad.ic efficiencies of 47.4%(110.5μM cm^(-2))and.27.8%(50.4μM cm^(-2))for methanol and.methane,*** performance of the photoelectrod.s was shown to be cu_(2)O facet-d.pend.nt,with cubic structures lead.ng to greater conversion of cO_(2)to methanol(43%)and.methane(27%),compared.to the octahed.al morphology,while a higher percentage of metallic gold.on the nanostructured.cu_(2)O surface was mainly important for *** functional theory(d.T)calculations supported.these find.ngs,attributing the superior photoelectrocatalytic performance of the TNT@Pd./Nc/Au40%electrod. for cH4generation to the formation of an OcH3intermed.ate bond.d.to Au *** using isotope-labeling and.analysis by gas chromatograph-mass(Gc-MS)d.monstrated.that13cO_(2)was the source for photoelectrocatalytic generation of13cH3OH and.3cH313cH2OH.

关键词： cu_(2)O nanocubes Photoelectrocatalysis Polyd.pamine cO_(2) photoelectrored.ction d.T calculations

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：