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简介：双向强风是一条简单途径检测，注解，并且分析候选人orthologous或在一个单身者的paralogous序列去。这个过程通常被限制到设定的Perl脚本的领域，通常为象UNIX一样调节了环境。移植那些脚本到另外的操作系统涉及重新分解他们，并且另外有要求的图书馆的Perl编程环境的安装。克服这些限制，一条数据管道在Java被实现。这应用提交序列的二批到NCBI强风工具的本地版本，管理结果表，并且精制双向、简单的点击。变细长术语被纳入点击，几统计被导出，并且分子的进化率通过PAML被估计。结果被写给为进一步的分析打算的一套限定的文章表格。提供的图形的用户接口用这个应用程序允许一个友好相互作用，它被记录并且对在http://moodle.fct.unl.pt/course/view.php的下载可得到?在GNUGPL许可证下面的id=2079或https://sourceforge.net/projects/bidiblast/。

简介：Baosteelstartedtheproductionofpipelinesteelintheearly1990s.Thecompanyhassofarproducedmorethan4MtofAPIX42-X80andhydrogensulfideresistantX52-X65steel.In2006,itsucceededinproducingX100andX120pipelinesteels,whichhavebeenusedinmanyimportantprojects,suchastheoiltransportingprojectintheTarimBasin,thepipelineprojectinSudan,theWesttoEastgaspipelineproject,theSino-Russianoiltransportingproject,etc.Baosteelhasmadegreatprogressinthepuritycontrolofpipelinesteel,thehomogeneitycontrolofslabcompositionandsurfacequalityoverthelasttenyears.Thecompanyhasachievedthisbyimprovingitssteelmakingequipmentandoperationmanagementtechnology,andbyintegratingitsprocesstechnology.Thephosphorusandsulfurlevelsofthepipelinesteelhavebeendecreasedto50ppmand12ppmrespectively(1ppm=10-6).

简介：High-densitytilingarraysprovidecloserviewoftranscriptionthanregularmicroarraysandcanalsobeusedforannotatingfunctionalelementsingenomes.Theidentifiedtranscriptsusuallyhaveacomplexoverlappingarchitecturewhencomparedtotheexistinggenomeannotation.Therefore,thereisaneedforcustomizedtilingarraydataanalysistools.Sincemostoftheinitialtilingarrayswereconductedineukaryotes,dataanalysismethodsarewellsuitedforeukaryoticgenomes.Forusingwhole-genometilingarraystoidentifypreviouslyunknowntranscriptionalelementslikesmallRNAandantisenseRNAinprokaryotes,existingdataanalysistoolsneedtobetailoredforprokaryoticgenomearchitecture.Furthermore,automationofsuchcustomdataanalysisworkflowisnecessaryforbiologiststoapplythispowerfulplatformforknowledgediscovery.HerewedescribeTAAPP,aweb-basedpackagethatconsistsoftwomodulesforprokaryotictilingarraydataanalysis.Thetranscriptgenerationmoduleworksonnormalizeddatatogeneratetranscriptionallyactiveregions(TARs).ThefeatureextractionandannotationmodulethenmapsTARstoexistinggenomeannotation.Thismodulefurthercategorizesthetranscriptionprofileintopotentialnovelnon-codingRNA,antisenseRNA,geneexpressionandoperonstructures.Theimplementedworkflowismicroarrayplatformindependentandispresentedasaweb-basedservice.Thewebinterfaceisfreelyavailableforacedemicuseathttp://lims.lsbi.mafes.msstate.edu/TAAPP-HTML/.

简介：Acicularferritemicrostructurewasachievedforanultralowcarbonpipelinesteelthroughtheimprovedthermomechanicalcontrolprocess(TMCP),whichwasbasedonthetransformationprocessofdeformedausteniteofsteel.Comparedwithcommercialpipelinesteels,theexperimentalultralowcarbonpipelinesteelpossessedthesatisfiedstrengthandtoughnessbehaviorsunderthecurrentimprovedTMCP,althoughitcontainedonlyapproximately0.025%C,whichshouldmainlybeattributedtothemicrostructuralcharacteristicsofacicularferrite.

简介：Thispaperstudiesthecouplingeffectofthepipelinevibrationontheseabedscour.Averticaltwodimensionalmodelisappliedtonumericallyinvestigatethelocalscourbelowavibratingpipelinewithdifferentamplitudesandperiods.Usingthescourunderneathafixedpipelineasareference,thispaperfocusesontheimpactofthepipelinevibrationontheequilibriumscourdepth.Genericrelationshipsareestablishedbetweenthenon-dimensionalscourdepthandthenon-dimensionalvibratingparameters,i.e.,amplitudeandfrequency.Thenormalizationprocesstakesintoaccounttheinfluencesofsuchparametersastheincomingflowvelocity,pipediameter,andShieldsparameter.Anempiricalformulaisproposedtoquantifytheserelationships.

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简介：Asatransportmeansofoilandgasthesubmarinepipelinehasmanymerits,suchascontinuousdelivery,largeconveyingcapacity,convenientmanagement,etc.Atubewaschoseninourstudytosimulatethesubmarinepipelineintheexperiments.AhighaccuracyinstrumentADVandhighprecisionpoint-typepressuresensorswereusedtomeasuretheparametersoftheflowfield,includingthepressuredistribution,velocitiesatsevencrosssectionsnearthesubmarinepipelinewithfivedifferentclearanceratios,andtwelvedynamicpressurevaluesaroundthepipeline.Thepressuredistributionsandvelocitychangesaroundthepipeunderdif-ferentflowvelocitiesandclearanceratioswereanalyzed.Theseresultsmightbeusefulforfurtherstudyofsubmarinepipelineero-sionandprotection.

简介：ThereareabundantnaturalgasresourcesinwesternChina,butmanyoilandgasfieldsarerichinchloridion,sulfuretedhydrogen,carbondioxideandothercorrosivemedium,whichhavestrongcorrosivitytopipeline.Onegasfieldpossessesabundantnaturalgaswithgreatpressure,andthechloridionconcentrationinthewaterseparatedfromgasisabout10%,sothemediumhasgreatcorrosivity.Inordertoensurethesafetyofthepipeline,about13kmlengthpipelineandtheinternalpipesofagastreatmentplantthatpurifiesgasabout12billioncubicmeterayeararemadeof2205duplexstainlesssteel(2205DSS).2205DSShasmanycharacteristicsinweldingwithcomplexweldingprocess;andbecauseofhighqualityrequirementsfortheconstructionofnaturalgaspipelineandrestrictionofon-siteconditions,thesiteweldingisverydifficult.Aroundtheengineeringapplication,alargenumberofexperimentalresearcheshavebeencarriedoutonthematerialmicrostructure,propertiesandweldability.Finallyweldedjointswhichconformtotherequirementsofstandardareobtained,contributingtothefirstlarge-scaleapplicationofthismaterialinthefieldofoilandgaspipelines.Consideringtheengineeringapplicationandthelatestresearchdevelopment,theweldingandkeyfactorsaffectingthejointpropertiesof2205DSSpipesaresummarizedandanalyzed.

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简介：这份报纸为察觉描述一个新框架并且追踪在水下管道，它包括软件系统和硬件系统。它基于单眼用的电荷耦合器件照相机为AUV的视觉系统被设计。首先，从图象俘获卡片的即时数据流动被预先处理，管道特征为航行被提取。区域浸透度被推进在Sobel操作以后移开假边点组。一个适当方法被建议在Hough变换的过程在山峰点附近清除骚乱。第二，管道布局的连续性被考虑改进线抽取的效率。一旦线信息被获得了，参考书地区被Kalman过滤器预言。它在图象表示管道的可能的外观位置。Kalman过滤器被用来在下个框架估计这个位置以便每个框架的管道的信息能预先被知道。在坦克实验在真实眼的视觉数据上获得的结果被显示并且讨论。他们证明建议系统能检测并且追踪在水下管道联机，并且有效、可行。

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简介：摘要目的探讨第二代Pipeline血流导向装置（PED Flex）与第一代Pipeline血流导向装置（PED Classic）在治疗颅内动脉瘤手术操作参数及围手术期并发症的差别。方法回顾性分析郑州大学人民医院2015年2月至2016年8月应用PED Classic和2018年1月至2019年7月应用PED Flex治疗的颅内动脉瘤患者，PED Classic组53例，PED Flex组118例。记录2组患者手术操作时间、对比剂用量、术中透视时间及围手术期并发症情况，采用独立样本t检验比较手术操作时间、对比剂用量、术中透视时间的差异，以χ²检验比较并发症发生率。结果PED Classic组53例共治疗73个动脉瘤，PED Flex组118例共治疗146个动脉瘤。PED Classic组手术时间为（159.0±42.0）min，PED Flex组为（121.9±46.0）min，差异有统计学意义（t=5.012，P<0.001）。PED Classic组术中对比剂用量为（156.4±39.4）ml，PED Flex组为（110.1±38.5）ml，差异有统计学意义（t=7.229，P<0.001）。PED Classic组的术中总透视时间为（34.7±5.7）min，PED Flex组为（22.8±7.6）min，差异有统计学意义（t=10.196，P<0.001）。PED Classic组的围手术期并发症发生率（9.4%，5/53）高于PED Flex组（2.5%，3/118），但差异无统计学意义（χ²=2.503，P=0.114）。结论应用PED Flex治疗颅内动脉瘤的安全性好，且同PED Classic相比，其术中操作更为简单，但仍需警惕严重并发症的发生。

简介：稠密阶段的灵魂在水平管道在4.0MPa的一个压力下面传送研磨的煤的气体/固体的流动政体在直径的10公里，被电的电容断层摄影术(ECT)用8个电极监视。改进电容测量的精确性，测量电路的一个基于交流的单个隧道的电容被开发，并且一个修改反复的Landweber算法被用来重建图象。一个二液体的模型基于小粒的流动的运动理论被用来学习稠密阶段的灵魂传送研磨的煤的三维的不变的流动行为。

简介：WorkersonOctober29completedatunnelunderChina'sYangtzeRiverforamajorgaspipelinethatwillrunfromthesouthwestprovinceofSichuantoShanghaiineastChina.Withadiameterof3.08metersandalengthof1,405meters,thetunnellaidabout20metersbeneaththeriverbed,connectingtwogaswellsoneachbankoftheYang-

简介：BasemetalsofdomesticpipelinesteelswereusedtostudytheeffectofMnoncorrosionpropertiesofSSCC(SulfideStressCorrosionCracking),andweldswerecarriedouttostudytheeffectofMnSoncorrosionpropertiesofHIC(HydrogenInducedCracking)bothinsolutionswithwethydrogensulfide(H2S).TheywererespectivelyconductedbyreferringtothestandardsofSSCCandHIC.TestingresultsrevealedthatwiththeincreaseofcontentMn,theresistanceofSSCCwillbedecreased,fromthepointofmetallurgicview,anditisMnelementnotCelementtoleadtothetestingresultsofSSCC.Meanwhile,evenundertheconditionwithoutinclusionsMnS,HICinweldsstilloccurred.Thatistosay,MnSisnotnecessaryforHIC,thepresenceoflocalbandedstructuresinwhichMnandPareinclinedtoaggregatecausetothephenomenaofHIC.

简介：BasedonAPISTD1104-2005andCSAZ662-2007,fieldgirthweldingtestsandgirthweldabilityevaluationswereexecutedforthreetypesofwallthicknessX70UOEpipeline,inwhichthemostpopularmainlinegirthweldingmethod,single-wireautomaticgasmetalarcwelding(GMAW),wasused.Theweldingprocedurespecificationwasoptimizedtoachieveagoodqualityandcold-crack-freegirthweldjointwithoutpreheatingorpost-weldheattreatment.Inaddition,porosities,inclusions,andincompletefusiondefectswereavoided.Thetensilestrength,bending,Vickershardness,CharpyV-notchimpacttoughness,andcracktipopeningdisplacementfracturetoughnessofthegirthweldjointwereevaluated,andthejointexhibitedgoodmechanicalperformance.Thus,thefieldgirthweldabilityofBaosteel’sX70UOEpipelineisexcellentforautomaticGMAW.

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简介：Expressedsequencetags(ESTs)arewidelyusedingenesurveyresearchtheseyears.TheESTPipelineSystem,softwaredevelopedbyHangzhouGenomicsInstitute(HGI),canautomaticallyanalyzedifferentscalarESTsequencesbysuitablemethods.Alltheanalysisreports,includingthoseofvectormasking,sequenceassembly,geneannotation,GeneOntologyclassification,andsomeotheranalyses,canbebrowsedandsearchedaswellasdownloadedintheExcelformatfromthewebinterface,savingresearcheffortsfromroutinedataprocessingforbiologicalrulesembeddedinthedata.