简介：OnthebasisOftheYoung-LaplaceEquationthatdescribesthepressuredifferencebetweeneachsideofacurvedliquidsurface,astaticequilibriummodelisestablishedtodescribethesurfaceshapeoftheweldbead.Thegeo-metricalmodelforthemoltenpoolisincluded,whichisessentialtoexplaintheundercutphenomenonduringhighspeedbead-on-platewelding.Theresultsgotfromaniterationalgorithmshowthatitistheforcebalanceontheliquidmixtureofthedepositedmetalandthedepositedmetalandthemoltenbasemetalandthemoltenbasemetalthatcausestheundercut.Somefactorsandtheireffectsarealsoana-lyzed.

简介：这研究在Jiaoshiba区域和煤气的累积模式的Longmaxi形成基于沉积条件，器官的地球化学，存储空格，物理性质，岩性学和页岩气体水库的煤气的内容被总结然后与那相比在北美洲。在在Jiaoshiba的Longmaxi形成的页岩气体水库有好地质的条件，优秀页岩的大厚度，高器官的满意的、高煤气的内容，好物理性质，合适的深度，好保藏条件和好水库类型。在深架的底部的优秀页岩是为页岩气体探索和开发的主要目标间隔。在Longmaxi形成的页岩气体经历了三个主要reservoiring阶段：烃产生和压缩的早阶段页岩气体水库是什么时候，首先形成了；深埋葬和大规模烃产生的中间的阶段，它与页岩气体引起了水库的丰富；迟了的阶段高举，侵蚀和破裂开发当页岩气体水库最后被形成时。

简介：ThispaperinvestigatesthesolidificationbehaviouroftheAg—Cueutecticalloymeltundercooledupto100K.ItisrevealedthatlamellareutecticsgrowinadendriticformintheAg-Cueutecticmeltwithundercoolingequaltoorgreaterthan76K.Asundercoolingincreases,theremeltedfractionoftheprimaryeutecticsduringrecalescencerises.Thesevereremeltingandthesubsequentripeningoftheprimaryeutecticdendritesleadtotheformationofanomalouseutectics.

简介：特殊地质的身体的概念在这研究被使用了在sandbodies定义并且说明经济油和煤气的水库，它对烃预报和探索有用。用钻，记载的、地震、地震属性抽取，和在3D数据体积的记载的抑制倒置的全面分析，Shahejie形成的特殊地质的身体(P1在北Qikou的s)下垂，它有好烃潜力，在顺序stratigraphic框架的限制下面被识别并且描述。尺寸，几何学，和特殊地质的身体的空间分发特征，以及他们的内部体系结构和顺序结构模式，也被查明。在中间从相对集中化发展的地质的身体在P1s形成，到在以后的阶段的几散孤立的部分。这显示出小周期间隔(~2.5妈)在Ps1的整个transgressivedepositional进程的结束(~7.5妈)在湖和相对的湖水平上升的扩大期间与沉积供应和差错相关的沉淀的控制，它完成沉积系统的进化。根据地质的身体发展的关联和整齐，潜在的有利水库陷井的不同类型，包括lithologic透镜的陷井，lithologicupdippinchout陷井，和structural-lithologic合成陷井，能在学习区域被保存。另外，没有足够的数据，内部体系结构模型在边疆盆为进一步的烃探索提供科学基础。

简介：Adetailed3-DhailcloudnumericalmodelandparameterizationofmierophysiealprocessesweredescribedinPartⅠ(Hong1999)ofthisstudy.Inthispart,ahailcloudoccurringinXunyiarea.ShaanxiProvinceonJuly8,1997issimulatedbythemodeltoanalyzemechanismsofhailformationandhailsuppressionwithseeding.Theresultsshowthat97%ofhailembryosarefrozendrops.TheseedingexperimentswithAgIintermsofheightsshowthatiftheseedingismadebeforehailformation,theoptimumseedingpositionislocatedinthemaximumupdraftareaanditscenter,i.e.,AgIisseededinthezonewithhighwatercontenttobecoordinatedwithmaximumzoneoftheupdraft.Theseedingmakesconcentrationsofgraupelandfrozendropincreaseandtheiraveragemassorsizedecrease,sothattheproportionofconversionfromgraupelandfrozendropintohaildescendsgreatly,andthemassandconcentrationofhailstonearedecreasedtoachieveourpurposeforhailsuppression.

简介：TheTriassicLowerKaramayFormation(T2k1)isoneofthemainoil-bearingstratigraphicunitsinthenorthwesternmarginofJunggarBasin(NWJunggar),China.Basedonanintegratedinvestigationofoutcrops,welllogsandseismicdataofNWJunggar,theLowerKaramayFormationissubdividedinto2sets,6bedsand13layers.Also,itisconsideredthatthealluvialfan,thebraidedriver,themeanderingriverandtheshore-shallowlacustrineweredevelopedduringtheearlyperiodofMiddleTriassicinKaramaydistrictsⅠ,Ⅲ.TheLowerKaramayFormationdepositsthefollowing9sedimentarysubfacies:thelowerfan,themiddlefan,theupperfan,thebraidedchannel,theoverflowbank,theriverfloodofbraidedriver,themeanderingchannel,theriverfloodofmeanderingriver,theshore-shallowlacustrine.Seventeenmicrofaciessuchasthebraidedstreamchannel,thealluvialsandfloodplain,thealluvialglutenitefloodplain,thewaterchannel,thechannelbaretc.havebeenidentifiedinsubfaciesaswell.Thethicknessofstrataisfirstlyup-thinningandthenthickeningupwardtothetop,itisaprocessfromlarge-scalelacustrinetransgressiontopartlylacustrineregression.Furthermore,themicrofaciesplanardistributinglawprovesthattheremainingoilmayenrichalongthemarginofmicrofaciesbecauseoftheplanarmicrofacieschanges.Therefore,thisresearchisbeneficialforsearchingremainingoilinNWJunggarandprovidinginformationtotheproject"TheSecondaryExploration"ofPetroChina.

简介：Objective:Theelevatedincidenceofobesityhasbeenparalleledwithhigherrisksofbreastcancer.Highadiposityincreasesleptinsecretionfromadiposetissue,whichinturnincreasescancercellproliferation.Theinterplaybetweenleptinandestrogenisoneofthemechanismsthroughwhichleptininfluencesbreastcarcinogenesis.Anunbalancedestrogenmetabolismincreasestheformationsofcatecholestrogenquinones,DNAadducts,andcancermutations.ThisstudyaimstoinvestigatetheeffectofleptinonsomeestrogenmetabolicenzymesandDNAadductioninbreastcancercells.Methods:Highperformanceliquidchromatography(HPLC)wasperformedtoanalyzetheDNAadducts4-OHE1[E2]-1-N3adenineand4-OHE1[E2]-1-N7guanine.Reportergeneassay,realtimereversetranscriptionpolymerasechainreaction(realtimeRT-PCR),andWesternblotwereusedtoassesstheexpressionofestrogenmetabolizinggenesandenzymes:CytochromeP-4501B1(CYP1B1),Nicotinamideadeninedinucleotidephosphate-quinoneoxidoreductase1(NQO1),andCatechol-O-methyltransferase(COMT).Results:LeptinsignificantlyincreasedtheDNAadducts4-OHE1[E2]-1-N3adenineand4-OHE1[E2]-1-N7guanine.Furthermore,leptinsignificantlyupregulatedCYP1B1promoteractivityandproteinexpression.TheluciferasepromoteractivitiesofNQO1andmRNAlevelsweresignificantlyreduced.Moreover,leptingreatlyreducedthereporteractivitiesoftheCOMT-P1andCOMT-P2promotersanddiminishedtheproteinexpressionofCOMT.Conclusions:LeptinincreasesDNAadductlevelsinbreastcancercellspartlybyaffectingkeygenesandenzymesinvolvedinestrogenmetabolism.Thus,increasedfocusshouldbedirectedtowardleptinanditseffectsontheestrogenmetabolicpathwayasaneffectiveapproachagainstbreastcancer.

简介：Wereportontheexperimentalobservationoftheairflowmotioninducedbyan800nm,1kHzfemtosecondfilamentinacloudchamberfilledwithairandhelium.Itisfoundthatvortexpairswithoppositerotationdirectionsalwaysformbothbelowandabovethefilaments.WedonotobservethatthevorticesclearlyformedabovethefilamentinairjustbecauseoftheformationofsmallerparticleswithweakerMiescattering.Simulationsoftheairflowmotioninheliumareconductedbyusingthelaserfilamentasaheatsource,andthesimulatedpatternofvorticesandairflowvelocityagreewellwiththeexperimentalresults.更多还原

简介：TheexperimentwasperformedtoevaluatetheprogeniesofplantlinestransgenicforauxinsynthesisgenesderivedfromRiT-DNA.Fourlinesofthetransgenicplantswereself-crossedandtheforeignauxingenesinplantsofT5generationwereconfirmedbySouthernhybridization.Twolines,D1232andD1653,showedearlierfoldingofexpandingleavesthanuntransformedlineandthereforehadearlyinitiationofleafyhead.LeafcuttingsderivedfromplantoftransgeniclineD1653producedmoreadventitiousrootsthanthecontrolwhereasthecuttingsfromfoldingleaveshadmuchmorerootsthanrosetteleavesatfoldingstage,andthecuttingsfromheadleaveshadmorerootsthanrosetteleavesatheadingstage.Itisdemonstratedthatearlyfoldingoftransgenicleafmaybecausedbytherelativelyhigherconcentrationofauxin.Theseplantlineswithauxintransgenescanbeusedforthestudyofhormonalregulationindifferentiationanddevelopmentofplantorgensandforthebreedingofnewvarietywithrapidgrowthtrait.

简介：根据催化裂开的产品分发的分析和解释基于高酸粗略，为石油酸的去碳酸基的机制在FCC过程期间被讨论。质子从地点能与更否定的费用与羰基组的氧相结合形成能在弱契约受到劈开的反应中介的Bronsted酸发源，导致从它形成烷基的分解跟随的羧基的酸的羧基的组碎三坐标的carbenium离子，公司和H2O。象一个electrophilic试剂罐头酸的吊楔从羧基的酸的羧基的组到随后释放CO2。

简介：Thebasinsbcaring0ilandgasinChinab1ongt0mu1titudinousmassifbasinswliichevo1vcdandformcdduringdiwaperiodf0llowingtheplatf0rmdisintegration.Nomatterint0whatstageintect0nicev0lutiondidabasindeve10p,thccrust0bodycharactcr0fthcbasinbasementhastliesamesignaturc.IntheBohaigulfbasinctc’whichhasc0met0diwasta8

简介：Baifangoredepositisablind,copper-richandCu-U-AgparagenesisoredepositinShuikousbanorefield,Hunan,China.Inthearea,therearethreetectoniclayersincludingthoseofgeosynclineinthedi-rectionofE-WwhichmainlyconsistofupperPalaeozoicgroup,andthoseofplatforminthedirectionofaboutN-SwhichmainlyconsistoflowerPalaco

简介：Thegolddeposits,occurringinthesouthsubzoneofwesternQinling,aretheonlytypicalandimportantstrata-boundgolddeposits,whichareassociatedwithsubmarineexhalativesedimentation.ThegolddepositsincludetheLa'ermaoredeposit,theQiongmooredepositandtheYaxiangoreoccurrence.TheyarehosteditheCambriansilicaliteformationcomposedofblackchertandslate.Thepresenceoftypicalchertoffersimportantevidencetoevaluatethepossiblesubmarineexhalativesystemanditsroleintheformationofthegolddeposits,whicharecloselyassociatedwithperoclationanddiffusioninthehorizontal,verticalandaxialdirections,Element-assemblagezonationisclearlyseenduetodifferencesinelementconcentrationsindifferentdirections,Suchazonationmakesgold.selenium,uranium,copper,stibium,molybdenum,mercury,etc,precipitateintheformofsimpleorcompositeorebodies.Theestablishentoftheelement-assemblagezonationishighlyhelpfulforevaluatingdirectlythemetallogenesisofgolddeposits.

简介：ThediscussingscopeofthispapcrisconfinedtotheEuropeBohemianMassifandtheSoutheastChinadiwarcaion.Theformationoflargeandsuperlargepolygencticcompounduraniumdepositsintheabove-mentioncdtwoareasisapparentlycontrolledbyevolutionofcrustaistructureandrclatCdcloselytothesperificrcaionalstructure8ettIngwhcrot

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简介：在这份报纸，我们给活跃星群的原子核(AGN)的天体物理学的简短评论。在激发AGN的学习的一般介绍以后，我们讨论我们中央引擎的内部活动方式的现在的理解，有在10之间的群众的很可能增大的黑洞6并且1010M。我们有关从kpc规模喷气的X光检查观察(Chandra)和AGN的光线观察导出的AGN的喷气(瞄准流出)加亮最近的结果(费密，Cherenkov望远镜)与仔细与视觉(blazars)的线排列的喷气，并且讨论这些观察的解释。随后，我们关于AGN形成和进化的宇宙的历史总结我们的知识。我们与对即将来临的观察机会的描述得出结论。

简介：Anewironfilmsystem,depositedonsiliconeoilsurfacesbyvapourphasedepositionmethod,hasbeenfabricatedanditsformationmechanismaswellasorderlystructureshasbeenstudied,Itisfoundthattheformationmechanismofthefilmsobeysatwo-stagegrowthmodel,whichissimilartothattotheothermetallicfilmsonliquidsubstrates,Largeandorderlystructuresareobservedinthecontinuousironfilms.Theexperimentsshowthattheorderlyspatialstructuresresultfromthelocalmaterialgatheringinthesenearlyfreesustainedfilms.

简介：OptimalformationreconfigurationcontrolofmultipleUninhabitedCombatAirVehicles(UCAVs)isacomplicatedglobaloptimumproblem.ParticleSwarmOptimization(PSO)isapopulationbasedstochasticoptimizationtechniqueinspiredbysocialbehaviourofbirdflockingorfishschooling.PSOcanachievebetterresultsinafaster,cheaperwaycomparedwithotherbio-inspiredcomputationalmethods,andtherearefewparameterstoadjustinPSO.Inthispaper,weproposeanimprovedPSOmodelforsolvingtheoptimalformationreconfigurationcontrolproblemformultipleUCAVs.Firstly,theControlParameteri-zationandTimeDiscretization(CPTD)methodisdesignedindetail.Then,themutationstrategyandaspecialmutation-escapeoperatorareadoptedintheimprovedPSOmodeltomakeparticlesexplorethesearchspacemoreefficiently.Theproposedstrategycanproducealargespeedvaluedynamicallyaccordingtothevariationofthespeed,whichmakesthealgorithmexplorethelocalandglobalminimathoroughlyatthesametime.SeriesexperimentalresultsdemonstratethefeasibilityandeffectivenessoftheproposedmethodinsolvingtheoptimalformationreconfigurationcontrolproblemformultipleUCAVs.

简介：构造在Sinian的结束高举导致了Dengying的剥光()不同规模和在在Sinian之间的不顺从下面的很多第二等的溶解vugs的发展上的形成并且寒武纪。地质并且geochemical特征象洞，阴沟的入口处，石灰岩地区常见的地形试管和捱过的外壳的发展那样，突然的弄空和在向不顺从表面充满的国家岩石和vug中的13C和18O的否定偏转建议地面上的karstification为在在不顺从表面下面的150m左右以内的第二等的石灰岩地区常见的地形vugs的发展负责。这种第二等的溶解vug被不同阶段白云石，方解石，石英和沥青部分或完全在以后深的埋葬期间充满并且高举。事实象在填的13C和从国家岩石和13C的价值和充满与这个国家的增加或减少的18O的地面上的石灰岩地区常见的地形vug摇的18O的明显的差别那样，建议在vugs控告的热水的液体是allogenic液体。地面上的karstificationvug为能创造新第二等的vugs并且扩大以前的石灰岩地区常见的地形vugs的allogenic腐蚀剂液体充当了一根水管。溶解，急躁并且再结晶由allogenic腐蚀剂液体介绍和石油生产了地面上的karstificationvugs的热裂开的、引起的收缩和新第二等的vugs的发展在深埋葬期间并且高举。深埋葬dolomitite的最终的vug被液体充电决定不仅，溶解，矿物质急躁，并且石油在深埋葬期间的热裂开并且构造高举，而且由起始的第二等的溶解的数量，vugs由地面上的karstification创造了。