简介：理解空间飞行怎么影响细胞的发信号的小径的分子的机制，静止正常人的WI-38成纤维细胞在STS-93航天飞机使命上被飞。随后，RNA取样从飞空间并且地面控制房间被用来构造二个cDNA图书馆，它然后为抑制被处理减少性的杂交(SSH)识别spaceflight特定的基因表达。与氧化应力，DNA修理，和丰满的酸氧化有关的关键基因被空间飞行激活的SSH数据表演，建议细胞的氧化应力的正式就职。这被neuregulin的起来规定进一步证实1并且钙绑定蛋白质钙调蛋白2。另一个明显的压力符号是空间飞行唤起Ras/mitogen-activated蛋白激酶和phosphatidylinositol-3激酶发信号小径，与一起起来调整几个官方补给阶段的房间周期穿越基因。显示出表示的起来规定的另外的基因涉及蛋白质合成和pro-apoptosis，以及支持幸存。机能上地相关的基因的Interactome分析证明c-Myc为显示出重要变化的那些基因是“中心”。因此，我们的结果建议微严肃旅行可以在主要与细胞的应力发信号联系的基因表达影响变化，指导到apoptotic死亡或早熟的老朽的房间。

简介：recombinant的一张人口生来的线(RIL，F2:9)，源于在IR26之间的一个十字(Oryzasativasubsp。indica)并且Jiucaiqing(Oryzasativasubsp。装饰用的梨树)，被用来在100mmol/LNaCl下面识别米饭的种子萌芽能力10天。六个萌芽特点包括吸收率，萌芽率，萌芽索引，根长度，射击长度和活力索引被调查。混合主要基因和多基因继承模型被使用为萌芽能力进行基因分析。重要差别在米饭，和早萌芽阶段(05天)在RIL之中在盐应力下面所有萌芽特点地被检测可能是盐敏感舞台。在盐下面的萌芽特点的频率分布在RIL强调人口显示出连续分离，建议他们是几基因控制的量的特点。在盐应力下面的萌芽特点被二或三主要基因加多基因调整，并且主要与高可遗传性价值由主要基因统治了，为全部的phenotypic变化的12.5%99.0%的财务。每个特点被特定的基因模型控制：吸收率被基因，萌芽索引和活力加多基因由二主要基因或二主要基因加多基因，和根长度由三主要基因加多基因，萌芽率和射击长度由二主要基因索引的二个学生控制。

简介：StresscalculationformulaeforaringhavebeenobtainedbyusingAirystressfunctionoftheplanestrainfieldwiththedecompositionofthesolutionsfornormalstressesofAirybiharmonicequationintotwopartswhenitisloadedundertwooppositeinsideforcesalongadiameter.Onepartshouldfulfillaconstraintconditionaboutnormalstressdistributionalongthecircumferenceatanenergyvalleytodotheminimumwork.Otherpartisastressresidueconstant.Inordertoverifytheseformulaeandthecomputedresults,thecomputedcontourlinesofequi-maximalshearstresseswereplottedandquitecomparedwiththatofphoto-elasticitytestresults.ThisconstraintconditionaboutnormalstressdistributionalongcircumferenceisconfirmedbyusingGreens’theorem.Anadditionalcompressionexistsalongthecircumferenceoftheloadedring,explainingthedivorcementanddisplacementofsingularitypointsatinnerandouterboundaries.

简介：F9recombinant生来的线(RIL)人口，源于在IR28之间的一个十字(OryzasativaL。spp。indica)并且Daguandao(O。sativaL。spp。装饰用的梨树)，被用来构造一张分子的连接地图并且为23d在14°C包括吸收率，萌芽率，萌芽索引，根长度，射击长度和种子活力的特点识别萌芽能力。印射途径的合成间隔被使用为萌芽能力进行基因分析。在寒冷下面的萌芽能力特点的频率分布在RIL强调人口显示出连续分离，建议他们是几基因控制的量的特点。七QTL的一个总数在染色体上被识别4，6和9，为吸收率包括二(qIR-6，qIR-9)，为萌芽率(qGR-4)的，二为萌芽索引(qGI-4-1，qGI-4-2)并且二为根长度(qRL-4-1，qRL-4-2)。没有控制射击长度和种子活力的检测QTL。单个QTL解释的phenotypic变化从9.1%～37.0%，和二主要QTL，qIR-6和qGI-4-2，占了超过30%phenotypic变化。QTL的表情是精神上发展调整并且生长阶段特定。大多数这里观察的QTL为冷忍耐以前报导了的米饭位于类似于QTL的区域，显示这些QTL是可靠的。然而，qRL-4-2以前没被报导。

简介：

简介：种子背景率，收益部件和从异国情调的米饭germplasm的169就职的谷物质量特点从40在高温度下面被测试吗？

简介：BasedonthestudyaboutthegeologicalbackgroundofBeiyaGoldDeposit,numericalsimulationwasconductedaboutthethree-dimensionalstructuralstressfieldforBeiyaGoldDepositbyapplyingfiniteelementtheoryandbyemployingalinearelasticitymodel.ResultsofthesimulationindicatethattheBeiyasynclineisafaultedbasin,andahiddenfractureoccursinthewestwingofthesyncline.UndertheactionoftheEW-trendingcompressiveforce,fournearlyNS-trendingfractures(groups)weregeneratedinthestressstretchingareasofthetwowingsofthesyncline,andthesefracturesconstitutefavorabletectonicpositionsfortheupwardintrusionofporphyrymagmaandtheoccurrenceofAu-Pb-Znpolymetallicdeposits.

简介：Soilsalinityisoneofthemostimportantproblemsofcropproductioninestuarineandcoastalzones.Improvementinsalttoleranceofmajorfoodcropsisanimportantwayfortheeconomicutilizationofcoastalzones.Thisstudyprovedthattheapplicationofsalicylicacid(SA)improvedthegrowthandyieldundersaltstressconditionsandinvestigateditsphysiologicalmechanismsforsalttolerance.TheinvestigationontheeffectofSAforsalttoleranceduringgerminationshowedthatthedecreasedratesofgerminationandgrowth(intermsofshootandrootlengths)bythesaltstressweresignificantlyincreasedbytheSAapplication(SA+NaCl).ThetreatmentofSAtothehighandlowsalinesoilsenhancedthegrowth,yieldandnutrientvaluesofrice.TheeffectsofSAonNa+,K+andCl–ionicaccumulationweretracedundersaltstressconditionbyinductivelycoupledplasmaopticalemissionspectrometryandionchromatography.ItwasrevealedthattheincreasedaccumulationofNa+andClˉionsbythesaltstresswerereducedbySAapplication.AnincreasedconcentrationofendogenousSAlevelwasdetectedfromtheSA-treatedricevarieties(ASD16andBR26)byliquidchromatographyelectrosprayIonization-tandemmassspectrometry.Theactivitiesofantioxidantenzymessuchassuperoxidedismutase,catalaseandperoxidasewereincreasedbysaltstresswhereasdecreasedbytheSAapplication.ThestudyprovedthattheapplicationofSAcouldalleviatetheadverseeffectsofsaltstressbytheregulationofphysiologicalmechanisminriceplants.Inspiteofsaltstress,itcanbeappliedtothecoastalandestuarineregionstoincreasethericeproduction.

简介：有一个循环地极化的性质的纤维结构被建议。纤维在cladding由一个圆核心和一个三倍脑叶的压力区域组成，它与单个模式的纤维兼容，并且它能用常规金属化学药品蒸汽免职过程被制作。由涂层有一个高度折射的索引的层，为反响的联合要求的扭曲沥青被增加到几百测微计，和拉技术的成熟pit-in-jacket能被使用。过滤制作循环地极化的纤维的性质的极化试验性地被测量，显示出在一个宽广频率区域的高区别比率。

简介：

简介：Accordingtoelasticcontacttheory,contactmodelbetweenrollerandraceisestablished.ComparedwiththeHertzresults,theresultsareproved,basedonwhichcontactstressdistributionofdifferentcrowningandinitialcontactlengthisgiven,thentheappropriatevalueisderived.Onthebasis,inertiaforceanddifferentradialforceisgivenintoconsideration.Viaanalysis,itconcludesthatunderbalancedpureradialloadconditionthelargestcontactstressbetweenrollerandraceincreasesalongwithcrowningvalueincreasing.Withthesamecrowningvalue,thelargestcontactstressbetweenrollerandracedecreasesinthefirstandincreasesattheendalongwithinitialcontactlengthincreasing.Contactstressbetweenrollerandouterraceincreasesalongwithrevolutionspeedincreasing.

简介：MyrnaBlythspentmorethan20yearsasatopmagazineeditor.Sosheknowsathingortwoabouthowthemediausesstress,fearandtheultimatelyfruitlesspursuitofperfectiontosellstories.Sheofferssometipsabouthownottogetspunbywhatyouseeorread.

简介：Propertiesofthesoilsurfacelayer,thetemporalpatternofthemicroclimatevariablesaswellascropconditionwerecombinedtoanalyzethecharacteristicsoftheevapotranspirationfromwinterwheatfieldsinasalinesoilarea.Inordertoaccomplishthisanalysis,evapotranspirationwasdividedintoevaporationfromthesoilandtranspirationfromwheat.Moreover,theeffectofsoilsalinityonevapotranspirationwasevaluatedthroughtherelationshipbetweenactualevapotranspirationandpotentialevapotranspiration(Ea/Eo)andthetotalsoilwaterpotential(ψ)wasdividedintotwocomponents:matricpotential(ψM)andosmoticpotential(ψo).Twositeswithdifferentsalinitylevelswerechosenforthisstudy,locatedinHebeiProvince,China.MeasurementswereconductedinApril-May1997andMay1998.TheBowenratiomethodwasusedtoestimatetheactualevapotranspiration(Ea),whereaspotentialevapotranspiration(Eo)wasestimatedusingPenman'sequation.Measurementsofsoilevaporation(Es)wereobtainedwithmicro-lysimeters,andtranspirationwascalculatedfromthedifferencebetweenEaandEs.Theresultsshowthattranspirationcomprisedonaveragealmost80%oftotalevapotranspiration.Evaporationfromthesoildifferedslightlybetweenyears,butthisvariationwasdominatedbytheleafareaindex(LAI),whichrangedfrom4to5duringthestudyperiodof1997and1998.Soilelectricconductivity(EC),whichisdirectlyrelatedtoosmoticpotential,rangedfrom1.9to3.5mScm-1in1997andwasnegligiblein1998.Ourresultsindicatethatlowerosmoticpotentialdecreasesthetotalsoilwaterpotential,thusaffectingplanttranspiration.Hence,itispossibletosaythatsoilsalinityactuallydecreasesevapotranspirationfromwinterwheatfields.

简介：contourstressofspine,parallelogram,cervicalflexure,lumbarflexure,boundaryregioninspinalmechanics,neutralzone,thefirstclasslever

简介：Theobjectivestressrateisaratherimportantprobleminmechanicsoffinitedeformation.Inthispaper,theobjectivestressrateinco-movingcoordinateisderivedbyapplyingnonlineargeometricfieldtheoryofdeformation.Problems.suchaxlargeextensioncoupledwithrotation,andlargesheardeformation,areexemplifiedbyusingthenewformula.ComparingwithJaumann’sstressrateandotherformulaepresentedincurrentliterature,thenewresultappearstobethereasonableoneinco-movingcoordinatesystem.

简介：Gradingprocedureinroutineseacucumberhatcheryproductionisthoughttoaffectjuvenileseacucumberimmunologicalresponse.Thepresentstudyinvestigatedtheimpactofa3-minmechanicalperturbationmimickingthegradingprocedureonneuroendocrineandimmuneparametersoftheseacucumberApostichopusjaponicus.Duringtheapplicationofstress,concentrationsofnoradrenalineanddopamineincoelomicfluidincreasedsignificantly,indicatingthatthemechanicalperturbationresultedinatransientstateofstressinseacucumbers.Coelomocytesconcentrationincoelomicfluidincreasedtransientlyafterthebeginningofstressing,andreachedthemaximumin1h.Whereas,coelomocytesphagocytosisat3min,superoxideanionproductionfrom3minto0.5h,acidphosphataseactivityat0.5h,andphenoloxidaseactivityfrom3minto0.5hwereallsignificantlydown-regulated.Alloftheimmuneparametersrecoveredtobaselinelevelsaftertheexperimentwasconductedfor8h,andanimmunostimulationoccurredafterthestressconsideringthephagocytosisandacidphosphataseactivity.Theresultssuggestedthat,asinothermarineinvertebrates,neuroendocrine/immuneconnectionsexistinseacucumberA.japonicus.Mechanicalstresscanelicitaprofoundinfluenceonseacucumberneuroendocrinesystem.Neuroendocrinemessengersactinturntomodulatetheimmunityfunctions.Therefore,theseeffectsshouldbeconsideredfordevelopingbetterhusbandryprocedures.

简介：TheshearlagtheoryisusedtoanalyzethestresstransferfromconcretematrixtoFBGsensorsbasedonthattheFBGsensorandtheconcretematrixarecomposite.Thestresstransferformulaandthecoefficientareobtained.Theexperimentsprovethatthetheoreticalresultsofthestresstransferbythestresstransferformulaareinwellagreementwiththeexperimentaldata.

简介：Withasimpletropicalcoupledocean-atmospheremodel,thispaperpresentsananalysisaimingtounderstandtherelativeroleofthemeridionalandzonalwindstressesinthetropicalunstableair-seainteraction.Therolesofthezonalwindstress,themeridionalwindstressandthebothareconsideredrespectivelyintothecoupledsystem.Itisdemonstratedthatthemeridionalcomponentofthewindstressdoesnotleadtoanyinstabilityunderthelocalthermalbalanceassumption,butitdoesleadtoaweakinstabilityundertheseasurfacetemperatureadvectionassumption.Unstableair-seainteractionisdominatedbythezonalcomponentofthewindstress,suggestingthatignoringthemeridionalwindstressisapproximatelyfeasibleinstudyingthetropicalunstableair-seainteraction.

简介：Thestrainmonitoringandstressanalysisofanewtypeofpost-prestressedtunnellinerwerecarriedout.Theinstrumentationblockofthetunnelliner,withthedimensionsof12.06minlength,6500mmindiameter,and650mminthickness,waspost-prestressedwiththeunbondedtendons,eachofwhichconsistsof8piecesofdouble-loopedstrandsandtheaxialspacingofthetendonsis500mm.Concretestrainmeters,rebarmeters,loadcellandzero-stressmeterswereinstalledforthestrainmonitoring.Thetensioningloadswereappliedincrementallyinthreecycles(50%,77%and100%)attheconcreteageof28dandthetensioningworklastedfor187.1h.Strainreadingsweretakenbeforeandaftereachcycleduringtensioningperiodandatthespecifiedtimeintervalaftertensioningperiod.Itisfoundthatconcretecreepdevelopedovertensioningperiodis30%oftotalstrainand41.5%ofelasticstrainrespectively.Prestressforceintheunbondedtendonandconcretestressinthelinerwereevaluatedaccordingtotheobservedstrainvariations.Bothofthemaretime-dependent,andabout5.3%,8.3%and9.0%oftheprestresslossesareobservedattheageof1d,30dand60drespectivelyafterstressing.Thedistributionofprestressinthelinerisrelativelyuniformandmeetsthedesignrequirement.

简介：Objective:Toobservetheeffectsofthermalstressonproliferationofhumanvascularendothelialcells(VECs)andexploreitssignificance.Methods:ChangesofVECsproliferationwereinvestigatedwith3H-TdRincorporationmethodafterECV304wastreatedat43℃for2hours,whileexpressionsofintercellularadhesionmolecule-1(ICAM-1),inhibitorofdifferentiation-1(ID1),andP16andP21proteinsweredeterminedbyWesternBlotting.Results:TheeffectofinhibitionofVECsgrowthafterthermalstresswasdetectedby3H-TdRincorporationexperiment.WesternblottingshowedICAM-1,amarkerofactivatedendothelialcells,wasincreasedmarkedlyafterthermalstress.ExpressionofID1proteindeclinedgraduallywithincreasingexpressionsofitsdownstreamgenes,P16andP21followingthethermalstress.Conclusions:ThermalstresscouldstronglyactivateVECsandinhibitproliferationofVECsthroughID1,thusdownregulatingcyclin-dependentkinaseinhibitors,P16andP21,whichmightbeanessentialpathwayforrecoveryofVECsafterthermalstress.