学科分类
/ 25
500 个结果
  • 简介:1.during和in二者都表示某事的发生贯穿于某段时间中,或发生在某段时间中的某一点或几点时间上。在多数情况下,当我们不强调对比或某一段时间时.in和during在意思上并没有什么区别。

  • 标签: for 时间 对比 强调
  • 简介:AbstractGut microbiota is symbiotic and interdependent with human body. Intestinal probiotics are colonized in the human gastrointestinal tract, which can improve the host intestinal microenvironment and enhance the intestinal function and immune function of the human body. A small number of opportunistic pathogens exist in the intestinal tract. Once the number of pathogens exceeds the threshold of intestinal tolerance, the intestinal micro-ecological balance can be destroyed, and various diseases may thus develop. Pregnancy is a special status with different physiologic changing stages. In the meanwhile, alterations in the gut microbiome populations occur, which can promote the differentiation, development, and maturation of fetal organs by affecting maternal metabolism. Compared with normal pregnant women, great changes in the gastrointestinal function and gut microbiome may take place in pregnant women with pregnancy-related complications, in which these changes include the number, species, and intestinal translocation. The composition of the maternal gut microbiome could contribute to pregnancy and obstetric outcomes, and long-term health of mother and child. The relationships of pregnancy to gut microbiome have attracted an increasing attention in recent years. This article will provide a summary review of the research studies of gut microbiome in normal pregnant women versus abnormal pregnancy women with complications.

  • 标签: Gastrointestinal microbiome HIV Metabolic diseases Pregnancy Preterm birth Probiotics
  • 简介:降水的变化特征在冬季期间(在10月和下列三月之间,此后被叫作“就冬季”)在广东省在过去的50年期间(从1957~2006)并且与和平的SST的关系用实验直角的功能(文件结束)分析,小浪分析,和关联分析的方法被学习。结果证明广东降水在冬季期间展出40年和2年的伪周期的重要摆动;降雨比从1970年代中是从到1970年代并且从到礼品的1990年代的结束的开始的1950年代的结束的更少到1990年代中。持续干旱的频率多于在冬季期间泛滥支撑。广东降水在期间这次时期在到赤道的中央、东方的和平的SST的显著地积极的关联,但是在与菲律宾的海的西方、北的和平的SST东方的显著地否定的关联。61.5%持续干旱发生在Ni(n)o3.4索引的否定异例的阶段并且38.5%在积极的阶段。大气的循环的合成分析为与持续干旱联系的Ni(n)o3.4区域的积极、否定的阶段被执行。结果证明一个弱极的旋涡,在欧洲的强壮的马槽和一条山脉接近巴尔克哈什·莱克,活跃冷空气和在底层控制广东的一致的在北方的风异例,在亚洲大陆的低中间的纬度的不活跃的西的低骚乱,并且一个弱南部的分支西的马槽,都是为持续干旱的相互的原因。

  • 标签: 持续干旱 广东省 冬季 原因 降水 作者
  • 简介:Visitorstothe2010WorldExpo'sDanishPavilionwillgetthechancetosinktheirteethintofamous-Danishspecialties,suchasopen-facedsandwichesbetterknownas'sm(?)rrebr(?)d'.DanishchefandcookbookauthorAdamAamann,famousforhavingredefinedandmodernizedthe

  • 标签: 丹麦 2010年世博会 美食 三明治
  • 简介:Thispaperreviewscurrentrecommendationsontheappropriateevaluationandmanagementofcardiacarrhythmiasinthepregnantpatient.Mostarrhythmiasduringpregnancyarebenignandrequirenointervention.Whenrequired,thedecisiontotreatshouldbebasedonsymptomseverityandtheassociatedrisktomotherandfetusposedbypotentiallyrecurringarrhythmiaepisodesthroughoutthepregnancy.Anytreatmentstrategyinthispatientpopulationhasinherentrisktobothmotherandunbornchild.Beforetheinitiationofanyintervention,documentationofaclinicalarrhythmiaandcorrelationwithclinicalsymptomsshouldbeobtained.Thereisnoroleforempirictherapy.

  • 标签: ARRHYTHMIAS PREGNANCY PREGNANCY and HEART disease
  • 简介:Researchongeomagneticreversalchronologyhasestablishedtheexistenceoftwosuperchrons,oneduringtheCretaceousandtheother(Kiaman)duringtheLatePaleozoic.Overthepastfewyears,wehaveperformedseveralmagnetostratigraphicstudiesonEarlyPaleozoic(CambrianandOrdovician)sedimentarysequencesfromSiberia.OurresultsshowhighmagneticreversalfrequenciesduringtheMiddleCambrian.Incontrast,severalrecordsshowtheoccurrenceofa-20MyrlongreversedpolarityintervalintheLowerandMiddleOrdovician,suggestingthepresenceofathirdsuperchron.Weproposetogivethenameof“Moyero”tothisnewsuperchron;thisnameisattributedtotheSiberiansectionwhichfirstyieldedacompleterecordofthisreversedpolarityinterval.

  • 标签: 古生代 地磁反演 地质年代学 白垩纪 沉积序列
  • 简介:Apoptosiscanbetriggeredbyavarietyofstimuliincludingdeathfactors,anti-cancerdrugsandfactor-deprivation.Theseapoptoticcellsareswiftlyphagocytosedbymacrophagestopreventthereleaseofnoxiousorinflammatorymaterialsfromdyingcells.ThemolecularanalysisofFasligand(adeathfactor)-inducedapoptosisindicatedthatacascadeofproteases(caspases)isactivatedduringthisprocess,whicheventuallyactivatesaspecificDNase(caspase-activatedDNase).CADexistsasacomplexwithitsinhibitor(ICAD)inproliferatingcells.Whenthecellsaretriggeredtoapoptosis,caspases,inparticularcaspase3,inthedownstreamofthecaspasecascadecleaveICAD,whichreleasesCADtocauseDNAdegradationinnuclei.

  • 标签: 细胞凋亡 蚕噬作用 染色体DNA损毁
  • 简介:Abriefreviewwithdiscussionsisconductedforsomepertinentworks,doneandongoingintheLaboratoryofPhase-ChangeandInterfacialPhenomenaatTsinghuaUniversity,oninterfacialbehaviorofvaporbubblesandinterfacialtransportphenomenaduringliquidnucleationboiling.Fromasequenceofexperimentalinvestigations,somenewphenomena,particularly,thevisuallyobservedinterfacialtransportphenomenaorprocessesincludingjet-likeflows,bubbleinteractionandspatialscaleeffect,weredescribedinthisarticle.Theinterfacialeffectsandtransportphenomenaassociatedwithsurfacetensiongradientscausedbytemperatureandconcentrationvariationsweretheoreticallyanalyzedtorevealthemarkedinfluenceonbubbleinterfacialshapeanddynamicbehavior,thebubbledynamicsincludingnucleation,bubblemotionandcoalescence.Severaltheoreticalmodelsandmethodswereproposedtodescribethedynamiccharacteristicsandexplainthephysicsofinterfacialphenomena/processes.Thespe

  • 标签: BOILING INTERFACIAL PHENOMENA transport process phase
  • 简介:Abstract:Thecrackleofriceemergesfrequentlyduringdryingfromheatingpower.Variousfactorsaffectingricecracklewereanalysedanddiscussed.Itshowedthattheeffectivewaytoreducethericedryingcrackleshouldbeproperdryingtemperatureandspeedaswellasrationaldryingtechnology.

  • 标签: 水稻 干燥工艺 裂纹 干燥温度 干燥速度
  • 简介:ThisPaperdescribestheepidemiologicalsituationofSTDsathomeandabroad,therelationshipbetweenSTDsandtravelandtheimpactofSTDsoninternationaltarval.ItalsoanalysesSTD’scausativefactorsandraisespreventivemeasuresforSTDs.

  • 标签: INTERNATIONAL TRAVEL STDS
  • 简介:AnAmericanscientistnamedWilliamDementpublishedexperimentsdealingwiththerecordingofeye-movementsduringsleep.Heshowedthatthecommonperson'ssleepisinterruptedfromtimetotimebyspecialeye-movements,somefloatingandslow,othersquickandrapid.Peoplewokenduringtheseperiodsofeye-movementsgenerallyreportedthattheyhadbeendreaming.Whenwokenatothertimestheyreportednodreams.

  • 标签: 高中 学习辅导 英语 阅读理解 参考答案
  • 简介:Abstract:Thechangingofriceendospermcellduringagingwasinspectedandanalyzedbytissuesectionmethodinthispaper,whichwasconsideredasthemaincausationofthedescendingoftheeatingqualityofagedrice.Aneweffectivemethodofimprovingtheeatingqualityofagedricewasalsocarriedoutthroughenzymatictreatmentwhichwasbasedonthechangingofhistologicalstructureofagedrice.

  • 标签: 水稻 组织变化 胚乳细胞 老化
  • 简介:Staycation(家中度假,还可以拼为stay-cation或stacation)是2007年到2009年经济危机期间失业率和油价不断攀升的情况下迅速走红的一个词,指一个人或一家人待在家里休息或者在附近区域景点游览度假的一段时光。

  • 标签: 中学 英语 课外阅读 阅读材料