简介:Theshallowcylindricalstructureissuitabletodevelopbroadbandvibrationenergyharvestersduetothepropertyoftheinherentmechanicalbistability.Inthisletter,theoptimumdesignofthebistablecylindricalshellforbroadbandenergyharvestingapplicationisinvestigatedfromthestructuralpointofview.Theoutputpowerisevaluatedbytheconceptoftheharvestablepower,whichbalancesthefrequencyofsnapthroughandthereferredoutputenergyassociatedwitheachsnapthrough.Thenondimensionalharvestablepowerisanalyticallyexpressedasthefunctionofthenon-dimensionalcurvatureparameterandoneconstructedparameter.Theuniversaldependenceoftheoptimalcurvatureparameterandtheassociatedoptimalharvestablepowerontheconstructedparameterisderived,whichcanbewellapproximatedbythelinearrelationindoublelogarithmiccoordinate.
简介:INMay2013,YunnanChihongZincandGermaniumCo.,Ltd.(Chi-hongZn&Ge)bought51percentofthesharesoftwoBolivianminingcompaniesandundertookamonth-longevaluationofthemines'localenviron-ments.LaRazonnewspaper,whichhasthebiggestcirculationinBolivia,reportedChihong'sacquisitionwiththeheadline"Chinaassessestheenviron-mentalimpactoftheirinvestments,"claimingthattheminingprojectswerethefirsttopassthetestinBolivia.
简介:Greenandintelligentmanufacturingwillbethedevelopmentdirectionofmanufacturingindustrybecauseoftheirfeatures:lowpollutionontheenvironment,highefficiencyandautomaticproduction.Therapiddevelopmentofinternetischangingthedirectionofthemanufacturingindustry,whichwillimpactthegreenandintelligentmanufacturing.Basedonthese,theenvironmentandconditionsofgreenandintelligentmanufacturingbroughtbyinternetissortedoutinthispaper;andthenewopportunitiesandchallengesofgreenandintelligentmanufacturingintheinterneteraareanalyzed.Then,thepathfortherealizinggreenandintelligentmanufacturingisstudied;andsomepolicyrecommendationsareputforwardtopromotetherealizationofgreenandintelligentmanufacturing.
简介:Withadvancesinshaledrillingtechniquesboostingoilandgasproduction,theU.S.hasbecometheleader,firstoutpacingRussiainnaturalgasproduction,andthenbecomingin2014anetexporterandtheworld’slargestproducerofpetroleumproducts.PresidentObamadeclaredconfidentlyinJanuary’sStateoftheUnionAddressthatthecountrywas
简介:GuestEditorProf.Dr.StephanieTeufelUniversityofFribourgstephanie.teufel@unifr.chFromenergygenerationtotransportation,fromenergydistributiontostorage,fromsemiconductorprocessingtocommunications,andfromportabledevicestodatacenters,energyconsumptionhasgrowntobeamajorlimitationtousability
简介:Changingbehavioursandattitudestowardsmoresustainableindividualenergyconsumptionisadifficulttopictoaddress.Afteridentifyingthemostrecurrentfactorsinfluencingthebadenergyconsumption,society’senvironmentalshort-sightedness,alackofindividualresponsibilityandatendencytoputresponsibilityuponfirms,institutions,andgovernments,theauthorsevaluatedtheeffectthatbusinesspracticescanhaveonindividualbehaviour.Byqualifyingashighlycrediblesourcesofinformation,positioningthemselvesasexamplestofollow,andprovidingitsemployeeswiththenecessarysmartandinnovativetechnology,businesscommunitiescanhaveamajorimpactonchangingindividualbehaviourstowardsmoresustainableenergyconsumption.
简介:ThisstudyproposedadecompositionmethodbasedonthenormalizedquadraticshadowunitcostfunctiontoexplorethedeterminantsofthechangeinenergyintensityinChinafrom1985to2010.Thedecompositionanalysisindicatesthat(1)theimprovementintechnicalefficiencydramaticallyreducedtheenergyintensity,whereastechnologicalchangeplayedonlyaminorrole,whichcouldbeattributedtoareboundeffect;(2)theaggregatedallocationeffectwassmallbecausethechangeintheallocativedistortionbetweencapitalandenergysignificantlyenhancedenergyintensitybutwaspartlyoffsetbytheeffectstemmingfromthechangeintheallocativedistortionbetweencapitalandenergy;and(3)thesubstitutionofenergyforlaborincreasedenergyintensity,buttheaggregatedsubstitutioneffectsignificantlyreducedenergyintensitybecausethesubstitutionofcapitalforenergyreducedenergyintensitytoagreatextent.Thesefindingswereobtainedatthenationallevelandvariedatdieregionallevel.
简介:Thispaperreportsawind-poweredwaterpumpingsystemimplementedinruralsideofPakistan.ThedesignmethodologypresentedinthispapershallenhancetheefficiencyoftheexistingSavoniusturbine’sperformancebymodifyingitaerodynamically.BladeswithdifferenttwistanglesaredesignedinSolidEdgeandanalyzedusingcomputationalfluiddynamics(CFD)withANSYSFLUENTsoftware.Staticandrotationalanalysesareperformedtogetoptimizedtwistangleandresultsarehighlighted.Theperformancesoftheturbineinbothstaticandrotationalanalysesarecompared.
简介:Fourcategoriesofglobularproteins,includingall-α,all-β,α+β,andα/βtypes,aresimplifiedastheoff-latticeHNPmodelinvolvingthesecondary-structuralinformationofeachprotein.Thepropensityofthreetypesofresidues,i.e.,H,N,andPtoformasecondarystructureisinvestigatedbasedon146proteinsamples.WefindthatPresiduesareeasytoformα-helices,whereasHresidueshaveahighertendencytoconstructβ-sheets.ThestatisticalanalysisalsoindicatesthattheoccurrenceofPresiduesisinvariablyhigherthanthatofHresidues,whichisindependentofproteincategory.Changesinbond-andnon-bondedpotentialenergiesofallproteinsamplesunderawidetemperaturerangearepresentedbycoarse-grainedmoleculardynamics(MD)simulation.Thesimulationresultsclearlyshowalinearrelationshipbetweenthebond-stretching/bendingpotentialenergyandthereducedtemperature.Thebond-torsionalandnon-bondedpotentialenergiesshowdistincttransitionswithtemperature.Thebond-torsionalenergyincreasestothemaximumandthendecreaseswiththeincreaseoftemperature,whichisoppositetothechangeinnon-bondedpotentialenergy.Thetransitiontemperatureofnon-bondedpotentialenergyisindependentoftheproteincategory,whilethatofbond-torsionalenergyiscloselyrelatedtotheproteinsecondarystructure,i.e.,α-helixorβ-sheet.Thequantitativelybonded-andsemiquantitativelynon-bondedpotentialenergyof24α+βand23α/βproteinsamplesaresuccessfullypredictedaccordingtothestatisticalresultsobtainedfromMDsimulations.
简介:自从2007,Ulvaprolifera在黄海引起的巨大的绿潮每夏天发生了并且为本地政府引起了巨大的经济损失。Subei(诺思江苏省,中国)浅与它的大规模Porphyra水产业,被认为是U的最重要的来源。为绿潮的prolifera。揭示在西南的黄海在这个区域,水流的特征,温度,咸度和推迟的微粒物质(SPM)漂浮和漂流的水藻的物理机制,特别在Subei浅,被学习。光线的沙的地形学在Subei隆起浅抑制水流和原因网的特征纵、纬度的运动。纵的网运动是能带U的一个主导的动态因素。prolifera进近海流水。被水藻在光合作用期间生产的气体的数量决定是否U。在它从Porphyraaquacultural仪器被处理进水以后,prolifera能漂浮很好在海表面上。Subei浅被高混浊描绘,它能导致重要轻变细并且和U的快活影响光合作用。水里的prolifera。根据从2012的卫星遥感数据,在Subei的three-month-averaged表面SPM(4月,5月和6月)浅是140mg/dm3,和Subei的北方浅(34.5的北方
简介:WeassumegeneralizedghostPilgrimdarkenergy(GGPDE)modelinthepresenceofcolddarkmatterinflatFRWuniverse.WithsuitablechoiceofinteractiontermbetweenGGPDEandcolddarkmatter,weinvestigatethenatureofequationofstateparameterforGGPDE.Also,weinvestigatethenaturesofdynamicalscalarfieldmodels(suchasquintessence,tachyon,k-essence,anddilatondarkenergy)andconcernedpotentialsthroughthecorrespondencephenomenonbetweenGGPDEandthesemodels.
简介:Renewableenergyisclearlyaveryimportanttopicnowadays.Theriskandthedamagethatcouldbecausedbyconventionalenergyresourcescannotbehidden.Thereisanenormousneedthatpeoplestartformulatingabetterattitudetowardsrenewableenergyandchangetheirconsumptionbehaviour.Otherwise,thefutureofenvironmentandthecominggenerationsaredefiantlynotgoingtobepromising.Thispaperdiscussestheimportanceofsustainableenergyandhowtheenergyrelatedbehaviouriscreated.Itpresentsaframeworktoinfluencethecurrentbehaviourandpushittobemoregreenoriented.Itisalsoimportanttoknowtillwhatlimitaregovernmentsresponsibleinthischange,andwhatarethetoolsthattheyhavetopushtowardsgreendirection.
简介:Wereviewcurrentsiliconphotonicdevicesandtheirperformanceinconnectionwithenergyconsumption.Fourcriticalissuesareidentifiedtolowerenergyconsumptionindevicesandsystems:reducingtheinfluenceofthethermo-opticeffect,increasingthewall-plugefficiencyoflasersonsilicon,optimizingenergyperformanceofmodulators,andenhancingthesensitivityofphotodetectors.Majorconclusionsare(1)Mach–Zehnderinterferometer-baseddevicescanachieveathermalperformancewithoutanyextraenergyconsumptionwhilemicroringsdonothaveanefficientpassiveathermalsolution;(2)whiledirectbondedIII–V-basedSilaserscanmeetsystempowerrequirementfornow,hetero-epitaxialgrownIII–Vquantumdotlasersarecompetitiveandmaybeabetteroptionforthefuture;(3)resonantmodulators,especiallycouplingmodulators,arepromisingforlow-energyconsumptionoperationevenwhenthepowertostabilizetheiroperationisincluded;(4)benefitingfromhighsensitivityandlowcost,Ge/Siavalanchephotodiodeisthemostpromisingphotodetectorandcanbeusedtoeffectivelyreducetheopticallinkpowerbudget.Theseanalysesandsolutionswillcontributetofurtherloweringenergyconsumptiontomeetaggressiveenergydemandsinfuturesystems.
简介:Inthispaper,anenergyefficientbandwidthallocationschemeisproposedforwirelesscommunicationsystems.Anoptimalbandwidthexpansion(OBE)schemeisproposedtoassigntheavailablesystembandwidthforusers.Whenthesystembandwidthdoesnotreachthefullload,theremainingbandwidthcanbeenergy-efficientlyassignedtotheotherusers.SimulationresultsshowthattheenergyefficiencyoftheproposedOBEschemeoutperformsthetraditionalsamebandwidthexpansion(SBE)scheme.Thus,theproposedOBEcaneffectivelyassignthesystembandwidthandimproveenergyefficiency.
简介:在土壤和蔬菜的锑(Sb)的高集中能引起潜在的健康风险。然而,庄稼的生长和反应上的Sb的效果不是众所周知的,迄今为止,仍然为在中国的AlliticUdicFerrisols没有Sb限制标准。在这研究,一个温室实验被执行在生物资源,生理的表演,和宏上调查锑(Sb)的效果--并且绿中国卷心菜(BrassicachinensisL.)的微量元素元素集中,以及酶活动在从湖南省的AlliticUdicFerrisols,中国。锑以0的率(控制)被供应,2,5,10,20,和50mgkg−1并且因此在对待的土壤样品1.0mgkg−1,与背景珍视Sb集中是1,3,6,1121,并且51mgkg−1,分别地。结果显著地显示出卷心菜的叶生物资源和维生素酸内容(P<0.05)分别地,在30.6%和48.3%减少了并且显著地也玷污urease和脱氢酶活动(P<0.05)分别地,在33.6%和32.5%减少了什么时候玷污Sb集中,作为与控制相比是21mgkg−1。象由卷心菜的Mg,Cu,和Zn那样的必要滋养的元素的举起显然被影响,当时当土壤Sb集中超过了21mgkg−1时,可溶的糖内容稍微改变了的叶。把生理的回答和土壤酶活动基于卷心菜,为在AlliticUdicFerrisols的Sb的21mgkg−1的可允许的集中应该被推荐。
简介:Thesynthesisofnontoxicstablegoldnanoparticlesisimportantformedicalapplications.AnaqueousextractoftheplantStachyslavandulifoliaVahlwasusedtosynthesizegoldnanoparticles.ThisgreenmethodinvolvedtheS.lavandulifoliaVahlextractactingasareducingandstabilizingagent.Thenanoparticleswerecharacterizedbytransmissionelectronmicroscopy,dynamiclightscatteringanalysisandUV-visabsorptionandFouriertransform-infraredspectroscopies.Stabilityunderphysiologicalconditionsisimportantformedicalapplications.Thestabilityofthenanoparticleswascomparedwiththatofconventionalcitrate-cappednanoparticles,underbothsyntheticandphysiologicalconditions.ThenanoparticlessynthesizedfromtheS.lavandulifoliaVahlextractwerestableunderphysiologicalconditions,incontrastwithconventionalcitrate-cappednanoparticles.