简介：-BasedontheextendedMorisonEquationandmodeltests,thein-lineforcesonsmallsquarecylinderscausedbywaves(regularandirregular)andcurrentsareanalyzedindetailinthispaper.ThehydrodynamiccoefficientCDandCurelatedtoKCnumberandtheeffectofdirectionofwaveincidencearealsogiven,whichcanbeusedinengineeringpractice.

简介：为在当前模式的增加变换器的混乱的控制的一个方法被使用一阶的动态反馈控制介绍。反馈部分在系列由一个电阻和一个电容组成。要控制的系统被当作third-ordermodel，然后分离印射模型被使用数据采样方法获得。Byanalysing最大的标准特征值的位置，反馈获得的稳定的范围外面被查明，它的优化也被执行。最后，模拟和实验的结果证实理论分析的正确性和建议工具的有效性。

简介：Themeasurementtheoremoffiberopticallydriveninstrumentforhigh-voltagelinecurrentispresented.ThePLLvoltage-frequency-narrowpulseprincipleanditsmicro-consumptionmechanismareproposed,followedbyanalysisonthetwomainfactorsaffectingPLLmeasurementprecision.Asoftwaredesignschemeusing80C196KBmicro-controllerisintroduced.Theexperimentresultissatisfactory.

简介：SincetheSeptember11incident,therelationsbetweenPakistanandtheUnitedStateshavebeenallalonghingedonthewaronterror.Outofitsneedinthewaronterror,theUnitedStateshasdeemedPakistan'amajornon-NATOally'and

简介：Eddy-currentinversetechniqueisaveryimportantmethodtoreconstructtheshapeofflawsorcracks.Usingthedomainderivativeofthefar-fieldpatternforeddy-currentinverseproblemwithDirichletboundarycondition,anewalgorithmtorecovertheshapeofcrackswasconstructedandsomenumericalexamplesweregiven.Thealgorithmdemonstratesthatthealgorithmisfeasibleandcorrectforobtainingareasonablereconstructionofashapeofflawsorcracksfromthefar-fieldmeasurementseventhoughusinglessdataofdirectionsofincidenceandobservationsforfewerwavenumbersaregived.

简介：钝肾的损伤的管理一直在演变。过去的管理主要基于分级系统的损伤(AAST)的外科的美国协会，即要求了计算断层摄影术(CT)扫描。尽管CT扫描使用正在增加并且变得调查的标准化模式，分级的AAST不再在外科的干预的决定起唯一的作用。保守方法成功地管理的钝肾的损伤的二份案例报告被介绍。当与一顶头盔和完整的保护的设备在20km/h骑一辆机器脚踏车时，大小写一是有下降的1820岁的男孩。他被他的左胁腹打到岩石上。对比揭示的腹的CT4厘米，等级III脾的眼泪和等级IV与大perirenalhaematoma离开了肾损害。他的国际严厉分数(ISS)是34。他与床休息和监视的经常的浆液血色素保存地被管理。有推迟的对比的随后的CT与与等级IV肾的损害一致的尿溢出揭示了稳定的perirenalhaematoma。当他意指时，大小写二是在一条跑道上有一个马达自行车事故的4020岁的男性80～100km/h，穿一顶头盔。他失去了控制并且撞击了到跑道的sidewall上。对比揭示的腹的CT有大尿溢出的等级IV左肾的损害。他的肾的损害与间隔保存地被管理腹部的推迟的阶段CT。腹部上的重复CT被执行在没揭示剩余urinoma的起始的损害以后的五个月。在这学习，而且，到钝肾的损伤的管理的文学的评论被进行表明增加如此的损伤的保守管理的趋势。额外的放射学的参数可以指导未来决策。然而，数据的适用性可以被限制直到使随机化的试用是可得到的。

简介：ThedarkcurrentofIn0.47Ga0.53As/InPheterojunctionphotodiodes(HPDs)wasanalysed.Wefoundthatthereexistsanewdarkcurrentcompo-nent-deeplevel-assistedtunnelingcurrent.DLTSwasusedtomeasuretheIn0.47Ga0.53As/InPHPDs.Anelectronictrapwhichhasathermalactivationenergyof0.44eV,levelconcentrationof3.10×10^13cm^-3andelectroniccapturecrosssec-tionof1.72×10^12cm^2hasbeenfound.It^ˊsexistenceresultsinthenewtunnelingcurrent.

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简介：Inthehostileandhighlycorrosivemarineenvironment,advancedcompositematerialscanbeusedinmarinecurrentturbinesduetotheirhighstrength-to-weightratiosandexcellentresistancetocorrosion.Acompositematerialmarinecurrentturbine(CMMCT),whichhassignificantadvantagesovertraditionaldesigns,hasbeendevelopedandinvestigatednumerically.Asubstantialimprovementinturbineperformanceisachievedbyplacementofaducttoconcentratetheenergy.Computationalfluiddynamics(CFD)resultsshowthattheextractedpowerofaductedCMMCTcanbethreetofourtimesthepowerextractedbyabareturbineofthesameturbinearea.TheresultsprovideaninsightintothehydrodynamicdesignandoperationofaCMMCTusedtoshortenthedesignperiodandimprovetechnicalperformance.

简介：Thefinitevolumemethod(FVM)hasmanyadvantagesin2-Dshallowwaternumericalsimulation.Inthisstudy,thefinitevolumemethodisusedwithunstructuredtriangulargridstosimulatethetidalcurrents.TheRoeschemeisappliedinthecalculationoftheintercellnumericalflux,andtheMUSCLmethodisintroducedtoimproveitsaccuracy.Thetimeintegralisatwo-stepschemeofforecastandrevision.Fortheverificationofthepresentmethod,theStoker'sproblemiscalculatedandtheresultiscomparedwiththemathematicallyanalyticsolutions.Thecomparisonindicatesthatthemethodisfeasible.Aseaareaofaportisusedasanexampletotestthemethodestablishedhere.Theresultshowsthatthepresentcomputationalmethodissatisfactory,anditcouldbeappliedtotheengineeringfields.

简介：AnewmodeltodescribeI-Vcharacteristicsoforganiclight-emittingdevices(OLEDs)isdevelopedbasedonexperimentalresults.ThedependenceofI-Vcharacteristicsonenergybarrier,trapdensityandcarriermobilityisanalyzed.TheresultshowsthatthismodelcombinestheFowler-Nordheimtunneltheoryandthetrapchargelimitedcurrenttheorywithexponentialtrapdistribution(TCL),anditdescribesthecurrenttransportcharacteristicsofOLEDsmorecomprehensively.TheI-VcharacteristicsfollowFowler-Nordheimtheorywhentheenergybarrierishigh,thetrapdensityissmallandthecarriermobilityislarge.InothercasestheyfollowtheTCLtheory.

简介：Thescalinglawsofenergyconfinementareverysignificantforconfinementimprovement.AtypicalscalinglawofohmicheatingwithloweffectivechargeandradiationpowerisgivenbyGoldston

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简介：AbstractZika virus (ZIKV) may cause severe microcephaly in newborn babies and Guillain-Barré syndrome in some adults. In recent decades, its range has expanded in 86 countries. There are two ecologically and evolutionarily district cycles: urban cycle and sylvatic cycle. This work aimed to estimate the urban and sylvatic cycle areas of ZIKV throughout the world. The occurrence records of vectors, non-human primate hosts, and ZIKV were collected. We chose historical climate data, predicted vectors distribution, human population density, and elevation data as the variables to fit the maximum entropy model (MaxEnt). Current risk area and future prediction were performed with global climate models (GCMs) and shared socioeconomic pathways (SSPs). Predicting the ZIKV risk area would help tailor related control strategies. The results indicated that 16.6% of the world’s landmass (except Antarctica) is a risk area in the urban cycle. Approximately 6.22 billion people (78.69% of the global population) live in the risk area, with the vast majority in South Asia, tropical Africa, South America, North America, and countries around the Mediterranean Sea. Future climate change decreases the risk area of ZIKV. This study also suggested that the sylvatic cycle happened between the Tropic of Cancer and the Tropic of Capricorn. The overlap region of the urban and sylvatic cycles could be hotpots that ZIKV spill from the sylvatic to the urban cycle. It is indicated that long-term passenger screening, mosquito surveillance, and control are necessary.

简介：AbstractHost immune responses to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), especially in children, are still under investigation. Children with coronavirus disease 2019 (COVID-19) constitute a significant study group of immune responses as they rarely present with severe clinical manifestations, require hospitalization, or develop complications such as multisystem inflammatory syndrome in children (MIS-C) associated with SARS-CoV-2 infection. The deciphering of children's immune responses during COVID-19 infection will provide information about the protective mechanisms, while new potential targets for future therapies are likely to be revealed. Despite the limited immunological studies in children with COVID-19, this review compares data between adults and children in terms of innate and adaptive immunity to SARS-CoV-2, discusses the possible reasons why children are mostly asymptomatic, and highlights unanswered or unclear immunological issues. Current evidence suggests that the activity of innate immunity seems to be crucial to the early phases of SARS-CoV-2 infection and adaptive memory immunity is vital to prevent reinfection.

简介：-Amild-slopeequationforcombinedrefractionanddiffractionofrandomwavesintheindependenttimecurrentisderivedusingKirbyequation(1984).Inthederivation,thefrequencyofrandomwavesisrepresentedbasedonthetimeseriesconcept,byatypicalfrequencyanditsdeviationpart.Numericalresults,comparedwiththoseoflaboratoryexperiments,demonstratethatnewsetofirregularmildslopeequationwithcurrentisofgoodadaptability.

简介：Ⅲ.ApplicationtrendofrareearthinironandsteelCurrently,pretreatmenttohotmetalandmoltensteelrefininginChinaarenotsopopularasindevelopedcountries.Thecontentofsulfurinlow-alloysteelinsomesmallandmediumsteelmillsinChinaisabout0.012%,whichisseveraltimeshigherthanthatino-

简介：AbstractCongenital heart disease (CHD) is the most common birth defect worldwide. In recent years, the widespread application of innovative molecular diagnostic technologies in clinical scenarios has obviously increased the molecular diagnostic yields of CHD, providing evidence-based guidance for medical decision-making. These molecular diagnostic technologies include chromosome microarray analysis, targeted sequencing, exome sequencing, and genome sequencing. Furthermore, high-throughput sequencing technology has performed excellently in the clinical molecular diagnosis of CHD. This review provides an overview of the current technology and applications in the molecular diagnosis of CHD. The unmet issues and future directions in adapting novel genomic testing technologies to the molecular diagnosis of CHD in clinical settings are also addressed.

简介：Next-generationsequencing(NGS)hasbeenrapidlyintegratedintomolecularpathology,dramaticallyincreasingthebreadthgenomicofinformationavailabletooncologistsandtheirpatients.Thisreviewwillexplorethewaysinwhichthisnewtechnologyiscurrentlyappliedtobolstercareforpatientswithsolidtumorsandhematologicalmalignancies,focusingonpracticesandguidelinesforassessingthetechnicalvalidityandclinicalutilityofDNAvariantsidentifiedduringclinicalNGSoncologytesting.