简介：

简介：在中国的金geochemical省在这研究通过溪流沉积或集水沉积采样被描出。每个金geochemical省由2.5个ng/g封面的阀值价值描出几千公里的一个区域。是窘境geochemists传统地认为那块金牌不能在河或溪流里为长距离移居由于它的化学不活泼和高特定的密度形成一个大规模geochemical异例。在一台扫描电子显微镜(SEM)下面的量的分光镜的分析和观察显示亚微观的金粒子的存在(

简介：研究表明，川西地区沙溪庙组储层主要储集岩为长石砂岩、岩屑长石砂岩，其次为岩屑砂岩、长石岩屑砂岩及岩屑石英砂岩。储集空间分为孔、缝，其中主要储集空间为粒间溶孔，其次为残余粒间孔和粒内溶孔。喉道类型以管状和粒间裂隙为主，属细一微喉型。储层孔隙结构差，具有孔隙小、喉道窄、有效连通孔隙体积小和中一高排驱压力的特征，总体属于低一中孔、低一中渗，局部存在高孔高渗的常规储层，非均质性强。在此基础上通过对储层发育控制因素、储集砂体展布及有利储集区带的研究，为川西沙溪庙组的油气藏勘探开发提供了重要支撑。图10表2参4

简介：这篇文章试图在Tarim盆分析差错系统的开发，分发和进化的主要控制因素。基于地震侧面解释，钻的全面分析和地质的数据，也许在Tarim盆认出的六个差错系统，他们是南方Tianshan山的低岬差错系统，北Tarim高举差错系统，北方Tarim消沉差错系统，中央差错系统，西南Tarim差错系统，和东南Tarim差错系统。主要差别在Tarim盆在差错系统的发展，进化和分发存在，这被显示。亚差错系统能在差错系统的内部根据差错开发和分发的差别被认出。这被描绘多水平差错系统的微分开发和分发在Tarim盆存在。差错带在古生代的阶层发展了主要在内部在paleo高举和paleo斜坡散布Tarim盆，和差错带在床主要在外部低岬消沉开发的中央新生代发生了。带并且片断差错系统的微分开发和分发也在Tarim盆存在。Tarim差错系统的形成和分发具有控制机制的建筑群。多相的结构的运动和构造转变在Tarim盆控制差错系统的多相的微分开发和分发。多水平微分开发和分发被多水平分开带和地区性的不顺从控制。带并且分割先存在的地下室也许控制的Tarim差错系统的微分开发和分发结构的质地。在Tarim盆的差错系统的主要方向被联合的以后的阶段盆山脉控制。

简介：以便在oxyfluoride眼镜和玻璃陶艺的形成上调查不同重金属离子的影响，有不同PbF2/CdF2比率的样品被融化熄灭和热处理方法准备了。玻璃网络结构上的Pb2+和Cd2+的不同效果被FTIR和拉曼系列调查。在玻璃网络结构的形成期间，Pb2+喜欢打破Si–O–Si契约并且随后为起诉赔偿结合到F−，并且Cd2+喜欢打破Si–O–Al契约并且被O2−包围。Pb2+和F−一起聚在一起并且形成氟化物nanocrystals，当Cd2+在热处理以后留在氧化物矩阵时。合适的CdF2的介绍是重要的在透明玻璃陶艺的制造调整并且控制玻璃网络结构和结晶化过程。

简介：Theformationmechanismofmethane(CH4)duringcoalevolutionhasbeeninvestigatedbydensityfunctionaltheory(DFT)ofquantumchemistry.Thermogenicgas,whichisgeneratedduringthethermalevolutionofmediumrankcoal,isthemainsourceofcoalbedmethane(CBM).Ethylbenzene(A)and6,7-dimethyl-5,6,7,8-tetrahydro-1-hydroxynaphthalene(B)havebeenusedasmodelcompoundstostudythepyrolysismechanismofhighlyvolatilebituminouscoal(R),accordingtothesimilarityofbondordersandbondlengths.Allpossiblepathsaredesignedforeachmodel.ItcanbeconcludedthattheactivationenergiesforH-assistedpathsarelowerthanothersintheprocessofmethaneformation;anHradicalattackingonβ-CtoyieldCH4isthedominantpathfortheformationofCH4fromhighlyvolatilebituminouscoal.Inaddition,thecalculatedresultsalsorevealthatthepositionsonwhichHradicalattacksandtowhichintramolecularHmigrateshaveeffectsonmethylcleavage.

简介：ArtificiallyinducedtetraploidPacificoyster,CrassostreagigasThunberg,producesmoreaneuploidgametesthannormaldiploidone,althoughtheyshowedacomparablefecunditytodiploidy.Themeioticchromosomeconfigurationof3tetraploidand1tetraploid/triploidmosaicmaleswereanalyzedthroughdirectchromosomeobservation.AmajorityofmetaphaseIspermatocytescontainedbothbivalentsandquadrivalents.Thechromosomeconfigurationofthesemaleswascharacterizedbypreferentialformationofbivalentstoquadrivalents.Bivalentsappearedinallspermatocytesandconsistedof86%ofallchromosomeaggregates.Incomparison,quadrivalentsoccurredin91%spermatocytesandconsistedofonly12.6%ofallchromosomeaggregates.Themeanbivalentfrequencyperspermatocytevariedbetween14.4and17.2;whilethatofquadrivalentsvariedbetween2.2and2.7.Mostquadrivalentsweretandemlychained(58%)orcircled(39%).Thetotalnumberofchromosomeaggregatesperspermatocyterangedfrom13to20withanaverageof17.6;while18(16bivalentsand2quadrivalents)wasthemostfrequent.Univalentsandtrivalentsappearedinverylowfrequency.Aneuploid(hypotetraploid)spermatocyteswereobservedinalowfrequency.Thechromosomeconfigurationofinthemosaicindividualwassimilartothatoftetraploidindividuals.Thepercentageoftriploidspermatocytes(2%)ofthemosaicindividualwassignificantlylower(χ2=30,P<0.01)thanthatoftriploidcells(46%)initssomatictissue.

简介：

简介：TheemergenceofB2Belectronicmarketshasgreatlychangedtherelativebargainingpowerofbuyersandsellers.Westudytheequilibriummarketstructureinabuyer’smarket.Wefindthatbuyer-controlledB2BmarketsandneutralB2Bmarketshavedifferentequilibriumstructures,andtheemergenceofB2Bmarketswillincreasesocialwelfare,butitseffectonbuyersandsellerswillbedifferent:B2Bmarketsincreasetheconsumersurplusoftheendmarket,buttheireffectsonbuyerandsellerprofitsaremoderatedbytherelativebargainingpowerofbuyersandsellers.TheprofitsofthesidewithmuchweakerbargainingpowerwilldecreaseduetotheintroductionofB2Bmarkets.

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：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：Combustioncharacteristicsofmethanejetflamesinanindustrialburnerworkinginhightemperaturecombustionregimewereinvestigatedexperimentallyandnumericallytoclarifytheeffectsofswirlinghightemperatureaironcombustion.Speziale-Sarkar-Gatski(SSG)Reynoldsstressmodel,Eddy-DissipationModel(EDM),DiscreteOrdinatesMethod(DTM)combinedwithWeighted-Sum-of-GreyGasesModel(WSGG)wereemployedforthenumericalsimulation.BothThermal-NOandPrompt-NOmechanismwereconsideredtoevaluatetheNOformation.Temperaturedistribution,NOemissionsbyexperimentandcomputationinswirlingandnon-swirlingpatternsshowcombustioncharacteristicsofmethanejetflamesaretotallydifferent.Non-swirlinghightemperatureairmadehighNOformationwhilesignificantNOprohibitionwereachievedbyswirlinghightemperatureair.Furthermore,velocityfields,dimensionlessmajorspeciesmolefractiondistributionsandThermal-NOmolarreactionrateprofilesbycomputationinterpretaninnerexhaustgasrecirculationformedinthecombustionzoneinswirlingcase.

简介：沙的荒芜的风景处于自然条件是干旱气候和丰富的沙材料供应的一个地质的产品，因此沙的沙漠的形成是为理解在地球系统的各种各样的stratigraphic/epigenetic范围之间的相互作用的一个理想的学习目标。直到现在，然而，这些的起源和形成的知识在Xinjiang抛弃，中亚多样、不一致，系统的评论是必要的。在在包围Xinjiang沙漠的新生代阶层的这些沙漠和他们的成双的灰尘存款的内部区域的古老的风神的沙沉积是反映沙漠的沙材料和形成和进化的起源的直接、间接的线索。在外部区域基于geochemical，荒芜的沙的矿物学、同位素的证据和相关存款，这篇论文在Xinjiang在沙的沙漠的发展考察研究进步，西北中国。许多证明建议在Xinjiang的荒芜的沙主要从古老的雨、冲积、河的沉积被采购并且因为本地沙供应，最后被完成。它指出在Xinjiang的构造结构的设置在Tarim盆和被地区性的水文学系统极大地影响的Junggar盆使沉积成为了两个，风神的进程从行星的风系统发源西，东方亚洲冬季季风和地形学的山脉山谷弯屈。然而，交通路径的方向在水文学动力学和风神的动力学之间是不同的，分别地，它被盆tectonics和地区性的大气的发行量线路的倾斜的结构决定并且决定了不同代理人交付的这些沉积的运输小径的anisotropies。这在二大盆导致由岩屑形成的沉积交通的一个地质的周期并且大部分因此增加沉积混合的度，引申并且在沙起源的更年轻、更旧的沉积来源，以及复杂性和差异之间再循环。

简介：二根不完全的骨头指了ankylosaurscapulocoracoid，肱骨被描述，它从Dachengzi镇的早白垩纪Jiufotang形成被发现，Kazuo县，辽宁省。Ankylosaur恐龙曾经在更低的白垩纪Yixian，Fuxin和西方的辽宁的Sunjiawan形成被发现了。在Jiufotang形成以内的ankylosaurs的出现在ankylosaurstratigraphic分发上改进我们的知识。基于scapulocoracoid的长度，新恐龙被估计超过6.0米长，在西方的辽宁代表最大的ankylosaur。

简介：<正>1IntroductionMostoftheworldwellknowpotashminesaredepositedinmarineenvironment.Regardingtheseriouspotashshortage,nosignificantprogresshasbeenmadeinmarinepotashinChina,whiletheterrestrialpotash

简介：Nanowireshaveattractedmoreandmoreinterestinrecentyearsduetotheiruniquepropertiescomparedtobulkmaterials[1].Thequitedifferentpropertiespossessedbynanowiresaremainlycausedbytheirhighsurface-tovolumeratio[2].Behaviorsofnanowiresunderirradiationconditionshavealsoattractedintensiveattentionintheseyears[3??5].Ithasbeenproposedthatnanowiresmayberadiationresistancebecausetheirlargesurface-to-volumeratio,andmeanwhilethesurfacearetheperfectsinksfordefectscreatedintheradiationprocess[3].

简介：在这研究，在Tang-eKushk和Sarvestan区域stratigraphic节的东方的Tarbur形成的465m被学习，185薄节被提供并且分析。基于岩石层位学的研究，在这二stratigraphic节的Tarbur形成被划分成上面、更低的部分。更低的部分包括是的中等床的rudist石灰石与Gastropoda由铁小瘤组成。上面的部分用轻灰巨大的organodetrital石灰石做的。两个都学习的节的识别有孔虫目动物由组成：Orbitoides媒介，Orbitoidestriangularis，Orbitoidestissoti，Orbitoidesorientalis，Orbitoidesapiculata，Antalynakorayi，Rotaliaskourensis，Dicyclinaschlumbergeri，Nezzazatinellasp，Omphalocyclusmacroporus，Trochospirasp，铁陨石calcitrapoides，Broeckinellasp，Lepidorbitoidessocialis，Gavelinellapertusa，被检测，并且也，它有Salpingoporelladinarica的Dasycladacea，Salpingoporellaturgida，Salpingoporellasp...根据诊断有孔虫类，Tarb的年龄决心

简介：KarstrocksfromtheHuanglongFormationexposedatthemarginoftheEasternSichuanBasincanbedividedintofourtypes:slightlycorroded,moderatelycorrodedporous,intenselycorrodedbrecciatedandintenselycorrodedandreplacedsecondarycalcickarsticrocks.Thecarbon,oxygenandstrontiumisotopecompositionsofthevariouskarstrocksareanalyzedsystematicallyandcomparedtorockswithoutkarstcorrosion.Theresultsindicatethat(1)theHuanglongFormationintheeasternSichuanBasinwasarestrictedbaysuppliedandcontrolledbyfreshwaterinwhichmudmicriteandmud-dolomicriteexhibitlowδ13Candδ18Ovaluesandhigh87Sr/86Srratios;(2)alltypesofkarsticrocksinthepaleokarstreservoirsoftheHuanglongFormationintheresearchareaareaffectedbyatmosphericfreshwaterwiththeδ13Candδ18Ovaluesand87Sr/86Srratiosintheoriginalformationapproachingthoseofatmosphericfreshwater,whichreflectsancienthydrologicalconditions,fluidproperties,isotopicsourceandthefractionationeffect;(3)theintenselycorrodedandreplacedsecondarylimestoneisaffectedbyavarietyofdiageneticfluids,oftenreflectedbyδ13Candδ18Ovalues,whilethe87Sr/86Srratiosexhibitthestrongdegreeofthecorrosion;(4)aftercomparingthe87Sr/86Srratiosofeachtypeofkarstrock,thediageneticfluidsaredeterminedtobemainlyatmosphericfreshwater,anddependingonthestrengthofcorrosion,andthelow87Sr/86Srratiofluidsinthelayerwillparticipateinthekarstprocess.Thecarbon,oxygen,andstrontiumisotopesofdifferentkarsticreservoirscanprovidemeaningfulgeochemicalinformationforforecastingandevaluatingthedevelopmentanddistributionrulesoftheHuanglongFormationatthemarginoftheeasternSichuanBasinintimeandspace.更多还原

简介：在Zagros低岬盆扔在期间的Asmari形成渐新世中新世。Lithologically，Asmari形成由石灰石，含白云石的石灰石，白云石，陶土的石灰石，某硬石膏(Kalhur成员)和沙岩(阿瓦十成员)组成。这研究在Dezful湾状之物subzone在Marun油矿从四表面下的节(井Mn-68，Mn-281，Mn-292和Mn-312)基于核心样品的分析以便推断他们的起源和阿瓦十沙岩成员的构造背景。Petrographical数据表明阿瓦十沙岩包括97.5%石英，1.6%长石，和0.9%岩石碎片和所有样品作为石英arenites被分类。起源和阿瓦十沙岩的构造背景用综合petrographic被估计了，geochemical学习。

简介：TakingmemberoneofYingchengFormationofCretaceousinXudongarea,XushenGasFieldofSongliaoBasinforanexampleandaimedatthediachronousproblemgenerallyexistedinvolcanicreservoirdivision,firstlyadvancedthemethodoftwostepsandtwounitesintheresearchesofvolcanicreservoirfinelydivisionthatguidedbythemethodthatsourcescontrolledandfoundedthestratigraphictrellis.Inthisprocess,volcanicedificesandbodieswereidentifiedandtraced.TheresultsindicatedthataimedstratainstudyareascouldbecarveduptosixlayersofYC1I1,YC1I2,YC1I-II,YC1II1,YC1II2andYC1IIIfromthetoptothebottom.Analyzingcausesandfirmlyunitedofwelldataandseismicdatacouldachievefinestratigraphicdivisionofvolcanicreservoir.Surfacesoflayersandvolcanicbodieswerebasicallyunanimousinsidedirection.Stratuminclinationgraduallyreducedwiththedistancesincreasedfromcraters.Theresultsofvolcanicreservoirdivisionhadpreferableconsistencywithlithologiesandvolcaniclithofaciesanddynamicdevelopmentdata.Theresearchesofferedausefulmethodtostratigraphicdivisionofvolcanicreservoirandithadveryimportantsignificancetoeffectivedevelopmentofvolcanicreservoirinpractice.