简介：摘要通过慢病毒干扰技术稳定下调小鼠黑色素瘤细胞株B16中Erbin基因的表达，研究Erbin表达对B16细胞增殖的影响。结果Erbin沉默后B16细胞的增殖能力受到明显抑制。结论Erbin基因对于黑色素瘤细胞的生长与增殖具有重要生物学意义。

简介：AthalfpasteightonthemorningofMarch28,inabasementnearYabaoRoadinChaoyangDistrictofBeijing,Chen,65yearsold,wasgoingtocooksomecongeewiththecookertoeatwithhiswife.Thelandlinephonerangsuddenly.'Shifu,akidwasgoneintheemergencyroom.Pleasecome.''Howoldwasthekid?''Onlytwodaysago.Intestinalnecrosis.''Alas,toobad.I'llberightthere.'Chenwalkedoutofthebedroom,unpluggedthecooker,tookdownthewhitecoatfromthehangerandreturnedto

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简介：ThispaperpresentsaclosedformsolutionandnumericalanalysisforEshelby’sellipticinclusioninaninfiniteplate.Thecomplexvariablemethodandtheconformalmappingtechniqueareused.Thecontinuityconditionsforthetractionanddisplacementalongtheinterfaceinthephysicalplanearereducedtothesimilarconditionsalongtheunitcircleofthemappingplane.Thepropertiesofthecomplexpotentialsdefinedinthefiniteellipticregionareanalyzed.Fromthecontinuityconditions,onecanseparateandobtaintherelevantcomplexpotentialsdefinedintheinclusionandthematrix.Fromtheobtainedcomplexpotentials,thedependenceoftherealstrainsandstressesintheinclusionfromtheassumedeigenstrainsisevaluated.Inaddition,thestressdistributionontheinterfacealongthematrixsideisevaluated.Theresultsareobtainedinthepaperforthefirsttime.

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简介：Thepaperstudieschannelchoicedecisionsinamulti-channelsupplychainunderastrategywherethereisanex-antecommitmentmadeontheretailpricemarkup.Themarketdemandisuncertainanddependentonthepriceandsalesefforts.Theresultsshowthatinanychannelstructure,whenmakingorderdecisionstheretaileronlyexaminesthepriceratioandthefluctuationsizeofrandomdemand,ratherthanthechannelcostandtheretailer’smarketingefficiency.Whentheretailpricerises,themanufactureriswillingtoincreaseinventoryquantityfordirectsales,becausethemanufacturer’sprofitmarginishigherindirectchannel.Theincreaseindemandfluctuationonlyaffectsthedegreeofchannelpreferencebutdoesn’tchangethemanufacturer’schannelchoice.Nomatterinwhichlevelthepriceratiois,whenthesalesefficiencyofretailchannelisnothighorthedemandproportionofdirectchannelislow,themanufacturerandtheretailerwillbebothapttochooseadual-channelstructure.Thenaddingadirectchannelbecomesamarketingstrategy,ratherthanacompetitoroftheretailchannel,andhelpsthesupplychainwinmoremarketdemand.

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简介：ChinaandtheU.S.havemadesomeprogressindealingwithillicitdrugthreat.Theircooperation,however,hasnotalwaysbeensmooth.Thetwosidesneedtoimprovemutualtrusts,increaseanti-druglawenforcementcooperationandpushforaninternationalinformationsharingsystemtostopdrugstrafficking.

简介：Ceriasphereswithdifferentsizesandsulfurizedproductswithcorrespondingmorphologywerepreparedbyhydrothermalandgas-solidreactionmethodat600–800°CunderCS2atmosphereforashorttime,respectively.Dimensionaleffectinpreparationofγ-Ce2S3wasfirstlyinvestigatedbymeansoftechniquessuchasscanningelectronmicroscopy(SEM),X-raydiffraction(XRD),thermalgravimetricanalysis(TGA)andspectrophotometer.Theresultsshowedthatwhenceriananoparticleswithsmallsizewereusedasprecursors,theγ-Ce2S3couldbepreparedatthelowertemperatureandthebadlysinteredproductswereobtained;whenceriananoparticleswithlargesizewereemployedasprecursors,pureγ-Ce2S3wasdifficultlyobtainedevenifthetemperaturewasupto800°Candtheproductstendedtokeeptheiroriginalsize.Theheat-resistancepropertyoftheγ-Ce2S3withlargesizewasbetterthanthesmallerone,andthepureγ-Ce2S3preparedfromprecursorwithsmallsizehadagoodpigmentaryperformance.

简介：传统的心理咨询方式是在特定的时间和地点与心理咨询教师进行面对面的交流,受时间、地点条件的限制而难以适应信息化和智能化的发展需求。本文基于解决传统心理咨询模式的这些缺点,采用B/S架构,结合MVC的程序设计思想,采用Python语言,结合web.py框架和Mysql数据库,对系统进行了可行的设计与实现。该方案相比传统咨询方式,网络咨询有着不受时间、地点约束,咨询者可自由选择咨询师、咨询方式等优势,而且可以避免面对面的交流,提高咨询者自愿参与度,系统经过测试达到了实际应用水平。

简介：近日，湖北顺业农机4S店观摩座淡会在湖北顺业农机有限责任公司召开，这标志着全省第一家农机4S店在孝感开业。据悉，湖北顺业农机公司将与“东方红”、“久保田”两个知名农机品牌联姻，

简介：索尼全画幅微单TMA7S是首款最高感光度可以扩展到ISO409600的无反相机（默认感光度ISO100-ISO102400拍摄照片时可扩展到ISO100-ISO409600）．配合诸如SonnarT＋FE55mmF1．8ZA等大光圈镜头．几乎可以再肉眼无法看清的黑暗环境中手持拍摄明亮的照片．再造暗夜之光。

简介：利用高速摄像机对4名优秀男子手枪速射运动员4s组射击进行现场动作拍摄,同时采用秒表记录各动作时相时间,通过对动作录像和秒表采集时间的分析,来揭示4s射击的时间节奏特点.将4s组射击的动作阶段划分为五个时相：举枪至第1靶击发、第1靶至第2靶、第2靶至第3靶、第3靶至第4靶、第4靶至第5靶.研究发现：4s组每发子弹击发所用帧数为5～6帧（频率为63帧/s）,发与发之间间隔帧数间隔帧数在26～38帧,大多数在28～34帧之间;举枪到第1发枪响,时间都在1.4～1.7s之间,发与发之间的时间间隔在0.4～0.6s范围内.对于男子手枪速射项目的节奏研究,高速摄像是一种精确、可靠的研究手段.

简介：量子（q,s）一致熵的次可加性在q＞1时已被证明.本文将讨论在q＞1的条件下,（q,s）一致熵的强次可加性成立的条件和相关的结论.

简介：采用密度泛函理论的B3LYP方法、从头算的MP2方法和自洽反应场极化连续模型（PCM）,在6-311＋＋G（2d,2p）基组水平上研究了N,N’-二甲基-S-异苯并呋喃在气相和溶液中发生S→N烷基重排反应的机理、溶剂效应和取代基效应.结果表明：该反应通过四元环机理和双位迁移机理生成产物,在气相和溶剂水中,双位迁移途径的能垒均比四元环途径低,反应主要通过双位迁移途径生成产物.在气相,苯环上发生-Cl,-NO2和-OCH3取代时,双位迁移途径的能垒在MP2/6-311＋＋G（2d,2p）水平上比没有取代时分别低4.18,7.61,4.96kJ/mol,反应的取代基效应不明显.而在溶剂水中,苯环上发生-Cl,-NO2和-OCH3取代时,双位迁移途径的能垒在PCM-MP2/6-311＋＋G（2d,2p）水平上比气相时分别低37.73,39.96和37.17kJ/mol,反应的溶剂化效应非常明显.理论研究结果与实验观察结果一致.

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

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简介：FromNovember30toDecember6,2014,China-U.S.YoungLeaders'Dialogue2014washeldinChengduandBeijing.Thedialogue,whichwassponsoredbyCIISandassistedbyChengduMunicipalForeignAffairsOffice,exploredaroundthetopicof'NewModelofMajor-CountryRelationship&China-U.S.CooperationonGlobalGovernance'.Dr.RuanZongze,VicePresidentofCIIS,chairedtheopeningceremonyandmadeopeningremarks.

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