简介：Toanalyzetheinfluenceof±400kVQinghai-TibetHVDCtransmissionsystemontransmissionlineprotectionsinQinghaiACpowersystem,aclosed-loopsimulationsystemwasconstructedbycombingHyperSimsystemwithHVDCcontrolprotectiondevices.Variousfaultsondouble-circuit750kVandmulticircuit330kVACtransmissionlinesinQinghaipowersystemweresimulated.TheimpedancecharacteristicsandharmoniccomponentsatQinghaisideofQing-TibetDCtransmissionlinewereanalyzed.TheharmonicproportioninvoltagesandcurrentswerestudiedforfaultsthattookplaceatdifferentlocationsneartheDCsystem.TheinflenceofQing-TibetDCsystemonthedirectionalcomponentsofprotections,differentialprotectionsanddistanceprotectionsofACtransmissionlineswasdiscussedanddrewtheconclusionsthattheDCsytemhadlittleinfluenceondifferentialprotections,whilehadgreatinflenceondirectionalcomponentsanddistanceprotection.TheconclusionscanprovidereferenceforstudyingtheinteractionbetweenACandDCsystems.

简介：ForthereliabilityandpowerconsumptionissuesofEthernetdatatransmissionbasedonthefieldprogrammablegatearray(FPGA),alow-powerconsumptiondesignmethodisproposed,whichissuitableforFPGAimplementation.Toreducethedynamicpowerconsumptionofintegratedcircuit(IC)design,theproposedmethodadoptsthedynamiccontroloftheclockfrequency.Formostofthetime,whentheportisintheidlestateorlower-ratestate,userscanreduceoreventurnoffthereadingclockfrequencyandreducetheclockflipfrequencyinordertoreducethedynamicpowerconsumption.Whenthereceivingrateishigh,thereadingclockfrequencywillbeimprovedtimelytoensurethatnodatawilllost.SimulatedandverifiedbyModelsim,theproposedmethodcandynamicallycontroltheclockfrequency,includingthedynamicswitchingofhigh-speedandlow-speedclockfliprates,orstopoftheclockflip.

简介：<正>DearSir,Weherebyreportacaseofbilateralacuteangleclosureglaucomasecondarytoasystemicdecongestantcontainingpseudoephedrinefreelyavailableoverthecounter.Acuteangleclosureglaucomaisanocularemergency.Delayedrecognitionandtreatmentinevitablyleadstopermanentvisualimpairment.Acuteangleclosureoccursasaresultofobstructiontoaqueousdrainagebyblockageofthetrabecularmeshworkbytheiris.Typicalpresentingsymptomsincludeacuteonsetofocularpain,headacheandblurredvision.Onclinicalexamination,itischaracterizedbyamarkedlyraisedIOPofabove21mmHgtogetherwith

简介：Anew140GHz/2MW/3selectroncyclotronresonanceheating(ECRH)systemcomposedoftwounitsisnowbeingconstructedonHL-2A.Asapartofthesystem,twotransmissionlinesmarkedNo.7&8playtheroleofcarryingmicrowavepowerfromtwogyrotronstothetokamakport.Basedontheoversizedcircularcorrugatedwaveguidetechnology,anevacuatedtransmissionsystemwithhighpowercapabilityandhightransmissionefficiencyisdesigned.Detailsarepresentedforthedesignofthecorrugatedwaveguide,thelayoutoftheproposedlinesandthevacuumpumpingsystem.Thenmodeconversionlossesduetocoupling,misalignment,bendsandgapsarediscussedtoserveasareferenceforanalyzingthetransmissionefficiencyandalignment.Finally,adual-modespropagationcaseconsistingoftheHEnandLPnevenmodesisdiscussed

简介：AIM:Toinvestigateandcomparethecytopathologicalandclinicaleffectsofamnioticmembranetransplantation(AMT)andoralmucosalmembranetransplantation(OMMT)insocketcontraction.METHODS:Twelvepatientswhocouldnotbefittedwithocularprosthesisduetosocketcontracturewereincludedinthisstudy.SevenpatientsunderwentAMTand5patientsunderwentOMMT.Thirteenpatientswhohadhealthysocketswereincludedascontrolgroup.Depthofinferiorfornix,degreeofinflammation,extentofthesocketcontractureandsocketvolumeweremeasuredinthepreoperativeperiodandatsixthandtwelfthweekspostoperatively.Impressioncytologyofconjunctivalfornicesandteartransforminggrowthfactorbeta-1(TGFβ1)levelsweredetermined.RESULTS:IntheAMTgroup,socketvolumeandlowerfornixdepthvaluesweresignificantlyhigher(P=0.030andP=0.004respectively)andinflammationlevelsandimpressioncytologystages(P=0.037andP=0.022respectively)weresignificantlylowerinpostoperativeperiodcomparedtopreoperativeperiod.IntheOMMTgroup,nostatisticaldifferenceswerefoundintermsofclinicalparameters,inflammationlevelsandimpressioncytologystagesofpreoperativeversuspostoperativevalues.PreoperativetearTGFβ1levelswerehigherinAMTandOMMTgroupscomparedtothecontrolgroup(25.5ng/mL,26.3ng/mLand21.7ng/mLrespectively).DecreasedtearTGFβ1levelswereobservedinboththeAMTandOMMTgroupspostoperatively(mediandecreasevalue=2.1ng/mLand2.7ng/mLrespectively).CONCLUSION:AMTisassociatedwithpostoperativeimprovementininferiorfornixdepth,socketvolume,inflammationandimpressioncytologylevelsandmaybeamoreproperalternativemethodthanOMMTinthemanagementofsocketcontracture.

简介：镰刀霉poae传播和真菌的社区作文上的Tyrophagusputrescentiae的效果在nonsterile大麦谷物被学习。实验包括了后面的处理：没有螨，控制大麦；没有preincubation，在F上包含10或50螨的大麦。poae(Tp10和Tp50)；在F上在preincubation以后包含10或50螨的大麦。poae(FTp10和FTp50)。螨的数字，F的成功的转移。在真菌的社区的poae，和变化在实验的21d以后被检验。deoxynivalenol的增加(穿上)在大麦的内容被选择为成功的F的一个标准。poae转移。T的preincubation。F上的putrescentiae。poae增加了分别地为FTp10和FTp50近似穿上水平到谷物的800和300g/kg。T。在FTp10的putrescentiae人口生长比在Tp10低，当没有差别在FTp50和Tp50之间被发现时。真菌的社区被扩大比较，它的碎片，和运作的分类单位(OTU)克隆并且定序分析。OTU分析没支持F的转移。经由螨的poae。从分析克隆，仅仅，13克隆与F聚类的序列。在在距离水平0.07点定义的OTU的poae。相关克隆从FTp10，Tp10，Tp50和控制处理，然而并非从FTp50发源。然而，F的存在。在FTp50的poae被PCR扩大与特定的教材证实。观察可以被螨人口密度的不同效果解释，也就是说在高密度，(FTp50处理)真菌被过度放牧，当更低的人口密度(FTp10)支持了F时。poae转移。

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简介：Aquasi-cycliclow-densityparitycheck(QC-LDPC)codeisconstructedbyanimp

简介：Wedemonstrateadigitalopticalcommunicationsystembasedonminimumshiftkeying(MSK)signaltransmissionwithcoherentdetection.5-Gb/sMSKsignalcantransmitovera160-kmstandardsinglemodefiber(SSMF)withoutphasecompensation.Atthereceiver,weusedata-aidedchannelestimationandfrequencydomainequalization(FDE)techniquesinthedigitalsignalprocessing(DSP)algorithm,thenanalyzeitsperformancecharacteristicscomparedwithquadraturephaseshiftkeying(QPSK)format.ThesimulationresultsshowthattheMSKformatwillbeapotentialcandidatefornext-generationaccessnetwork.

简介：Thisletterpresentsalowcostsolutionforwavelengthdivisionmultiplexedorthogonalfrequencydivisionmultiplexedpassiveopticalnetwork(WDM-OFDM-PON)withwidelytunableopticalfilterandlinearsmallform-factorpluggable(SFP)module.With9-nmtunablerangefrom1551to1560nm,thetunablefiltercansupportupto10-channel100-GHzspacingWDMPONsystem.Alinearavalanchephotodiode(APD)basedSFP+moduleisdesignedforopticalOFDMsignaldemodulation,whichcanprovidebetterreceiverperformancecomparedwithlimitingAPDmodule.Experimentalresultsshowthat～34dBpowerbudgetcanbeachievedin4×5-GbpsWDM-OFDM-PONsystem,whichcansatisfythetransmissionrequirementsofnextgenerationPONsystem.

简介：AIM:JS-38(mitothiolore),asyntheticversionofametaboliteisolatedfromXenorhabdussp.,wasevaluatedforitsanti-tumorandwhitebloodcell(WBC)elevatingactivities.METHOD:Theseanti-proliferativeactivitieswereassessedinvitrousingapaneloftencelllines.Theanti-tumoractivitiesweretestedinvivousingB16allograftmousemodelsandxenograftmodelsofA549humanlungcarcinomaandQGYhumanhepatomainnudemice.Theanti-tumorinteractionsofJS-38andcyclophosphamide(CTX)or5-fluorouracil(5-Fu)werestudiedinaS180sarcomamodelinICRmice.SpecificstimulatoryeffectsweredeterminedonperipheralneutrophilsinnormalandCTX-and5-Fu-inducedneutropenicmice.RESULTS:TheIC50valuesrangedfrom0.1to2.0μmol·L-1.JS-38(1μmol·L-1)causedanincreaseinA549tumorcellapoptosis.Multi-dailygavageofJS-38(15,30,and60mg?kg-1?d-1)inhibitedinvivotumorprogressionwithoutasignificanteffectonbodyweight.JS-38additivelyenhancedtheinvivoanti-tumoreffectsofCTXor5-Fu.JS-38increasedperipheralneutrophilcountsandneutrophilratesinnormalBALB/cmicealmostaseffectivelyasgranulocytecolony-stimulatingfactor(G-CSF).InmicewithneutropeniainducedbyCTXor5-Fu,JS-38rapidlyrestoredneutrophilcounts.CONCLUSION:TheseresultssuggestthatJS-38hasanti-tumoractivity,andalsohastheabilitytoincreaseperipheralbloodneutrophils.

简介：ByusingPDM-OFDM-16QAMmodulation,all-Ramanamplification,coherentdetection,and7%forwarderrorcorrection(FEC)threshold,wesuccessfullydemonstrate63-Tb/s(368×183.3-Gb/s)signalover160-kmstandardsinglemodefiber(SSMF)transmissionintheC-andL-bandswith25-GHzchannelspacing.368opticalchannelswithbandwidthspacingof25GHzaregeneratedfrom16externalcavitylasersources.After160-kmSSMFtransmission,alltestedbiterrorrate(BER)areunder3.8×10-3,whichcanberecoveredby7%FECthreshold.Withineachchannel,weachievethespectralefficiencyof6.85bit/s/HzinC/Lband.