简介：从中国福建沿海某一污染滩涂的沉积物中筛选到一株具有较强拮抗水产病原菌的生防细菌LHB02。采用通用引物,对LHB02的16SrRNA片段进行扩增,获得1511bp的DNA系列,基于该DNA系列,结合细菌形态学、生理生化特征,鉴定LHB02为一株枯草芽孢杆菌。对LHB02进行了抗菌试验、抗菌谱检测和发酵条件优化研究,结果表明,LHB02对哈维氏弧菌、溶藻弧菌、鳗弧菌等有很强的拮抗作用,其优化后的发酵条件为：KB培养基（蛋白胨20g,丙三醇10mL,K2HPO41.5g,MgSO4.7H2O1.5g,H2O1000mL）;温度28°C,pH值7.0,培养时间36h,接种量1.5%。

简介：Fifty-sevenstations(48gridstationsandninestratifiedstations)weresampledacrossthestudyregion(67.000°–88.394°N,152.500°–178.643°W)duringthe4thChineseNationalArcticResearchExpedition(CHINARE4)fromJulytoAugust2010bytheicebreakerR/VXuelong.Atotalof24speciesofHydromedusaewereidentifiedfrom130zooplanktonsamples,ofwhichsevenspeciesbelongedtoAutomedusa,eightspeciestoAnthomedusae,fourspeciestoLeptomedudae,andthreespeciestoSiphonophora.CatablemamulticirratumKishinouye,1910,BougainvilliabitentaculataUchida,1925,andEuphysajaponica(Maas,1909)wererecordedforthefirsttimeintheArcticsea.Inthepresentpaper,18speciesofHydromedusaeweredescribedandillustrated,ofwhichthreespeciesweredescribedforthefirsttimeintheArcticsea,and15speciesweredescribedforthefirsttimeinChina.

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简介：Thegrowth,biochemicalcontentandbioaccumulationquantityof2,2’,4,4’-tetrabromodiphenylether(BDE-47)inSkeletonemacostatumwerestudiedunderdifferentN:Pratios(1,4,16,64and128).AllcellularbiochemicalcontentsofS.costatumpresenteddecreasingtrendovercultivationtime.Atearlystageofcultivation,thecellularprotein,carbohydrateandlipidinS.costatumpresentedhighervaluesintreatmentsofN:P=4and16.However,theywerelowerinthesetreatmentsatthelatestage,buthigherintreatmentsN:P=1and128.Similarly,BDE-47levelspercellofS.costatumwerehigherintreatmentsofN:P=4and16atearlystageofcultivation,whichwere3.8and3.7ng(106cells)-1,respectively.Atthemiddlestageofcultivation,theBDE-47levelperS.costatumcelllowered;anditfurtherreducedinthetreatmentsofN:P=4and16atthelatestagewiththevalues0.6and0.5ng(106cells)-1,respectively.However,itroseinN:P=128,reachingupto2.3ng(106cells)-1.ComparedwithBDE-47percell,BDE-47peralgalvolumeunderdifferentN:Pratiosdidnotpresentobviousdifference.ThequantityBDE-47accumulatedpercellofS.costatumwaspositivelycorrelatedwithprotein,carbohydrateandlipidpercell;meanwhile,theBDE-47pervolumehadapositivecorrelationwithbiochemicalcontentpervolume.ThevariationofbioaccumulationabilityofBDE-47inS.costatumcanbeexplainedbybiochemicalchangesduetoN:Pratios.

简介：Acomprehensivestrengthmonitoringsystemusedonafixedjacketplatformispresentedinthispaper.Thelong-termmonitoringofW-11-4Aplatformachieved.Structuralresponses(strainandacceleration)atselectedlocations,aswellasassociatedenvironmentalparameters,havebeenobtained.Theemphasisofthepaperisplacedonthesystemdesign,andtheinstrumentationandoperationmethodologyemployedinthemonitoringofthestructuralresponses.Theperformanceofthesystemandthecharacteristicresultsobtainedduringits13-monthoperationarealsosummarized.

简介：Thispaperpresentsthedetaildesignconditions,designcriteriaandmethodsaswellasdesignconclusionsoftheprocess,structureandcorrosionoftheproductionflowlinesandhighpressurewaterinjectionlinesinBZ34-2/4oilfieldinBohaiBay.AtpresentthisdesignrepresentsthedesigncapabilityandlevelinthefieldofthesubmarinepipelineengineeringofChina.

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简介：Onthebasisofthetemperatureobservationsduring1961-2000inChina,sevencoupledgeneralcirculationmodels'(GCMs)extremetemperatureproductsareevaluatedsuppliedbytheIntergovernmentalPanelonClimateChange's4thAssessmentReport(IPCC-AR4).Theextremetemperatureindicesinusearefrostdays(FD),growingseasonlength(GSL),extremetemperaturerange(ETR),warmnights(TN90),andheatwavedurationindex(HWDI).Resultsindicatethatallthesevenmodelsarecapableofsimulatingspatialandtemporalvariationsintemperaturecharacteristics,andtheirensembleactsmorereliablethananysingleone.Amongthesevenmodels,GFDL-CM2.0andMIROC3.2performancesaremuchbetter.Besides,mostofthemodelsareabletopresentlineartrendsofthesamepositive/negativesignsastheobservationsbutforweakerintensities.Thesimulationeffectsaredifferentonanationwidebasis,with110°Nasthedivision,east(west)ofwhichtheeffectsarebetter(worse)andthepoorerovertheQinghai-TibetanPlateauinChina.Thepredictionsforthe21stcenturyonemissionsscenariosshowthatexceptdecreasesintheFDandETR,otherindicesdisplaysignificantincreasingtrend,especiallyfortheindicesofHWDIandTN90,whichrepresentthenotableextremeclimate.Thisindicatesthatthetemperature-relatedclimateismovingtowardstheextreme.Inthelate21stcentury,theGSLandTN90(HWDI)increasemostnotablyinsouthwestChina(theQinghai-TibetanPlateau),andtheFDdecreasemostremarkablyintheQinghai-TibetanPlateau,northwestandnortheastofChina.ApartfromSouthChina,theyearlychangerangeoftheextremetemperatureisreducedinmostofChina.

简介：制图资料sourcematerial;cartographicdocument编制地图所需要的测量控制成果、地图、航片、遥感图像和文字等各种资料。根据使用程度可分为基本资料、补充资料和参考资料。制图精度mappingaccuracy地图绘制各工序,包括展绘数学基础,线划描绘和制图综合的精确程度。

简介：交向摄影convergentphotograph在摄影基线两端，两摄影机主光轴在物方相交成某一角度的摄影。等倾摄影equallytiltedphotograph在摄影基线两端，两摄影机主光轴保持平行，相对于水平面倾斜相同角度的摄影。

简介：Amutant(GQQ-M6)ofaSponge-Derivedstreptomycessp.GQQ-10obtainedbyUV-inducedmutationwasusedforproducingprodiginines(PGs).Singlefactorexperimentsandorthogonalarraydesign(OAD)methodswereemployedformediumoptimization.Inthesinglefactormethod,theeffectsofsolublestarch,glucose,soybeanflour,yeastextractandsodiumacetateonPGsproductionwereinvestigatedindividually.InthesubsequentOADexperiments,theconcentrationsofthese5keynutritionalcomponentscombinedwithsalinitywerefurtheradjusted.ThemutantstrainGQQ-M6gavea2.2-foldhigherPGsproductionthanthatoftheparentstrain;OADexperimentsofferedaPGsyieldof61mgL-1,whichwas10timeshigherthanthatoftheinitialGQQ-10strainundertheoriginalcultivationmode.

简介：SixactivecompoundsareisolatedfromthemarinebryozoanBugulaneritina,inhabitingtheNanwanBayintheSouthChinaSea,usingthebioassay-guidedmethodwithacombinationofextractionandpartitionationwithsuitablesolventsaswellasmultiplecolumnchromatographies(SephadexLH-20,ODSandpreparativeHPLC).Theirstructuresareidentifiedasknownbryostatins-bryostatins4,5,6,10,11and18throughintensiveanalysisofthedataofhighresolution2DNMR(600MHz,DQF-COSY,TOCSY,HMQCandROESY)andESI-MS.Amongthem,bryostatins10,11and18areforthefirsttimeobtainedfromthisbryozoanintheSouthChinaSeaandtheyshowsignificantantineoplasticactivitiesinvitro.

简介：基于2011年12月和2012年6月洪、枯季大潮北港上段河道水域的现场水文观测资料,以及1999、2002、2003、2004、2005、2006、2007、2010年历史水文测验资料,分析潮流历时、流速、优势流和含沙量等水沙现状和变化特征,并探讨近年来该水域水沙变化的主要影响因素。结果表明：（1）目前北港上段河道水域落潮占主导优势;青草沙水库和长江大桥建成后,落潮优势明显增强,洪季大潮涨、落潮垂线平均含沙量减少,枯季大潮涨、落潮垂线平均含沙量增多;（2）流域径流量的季节性变化是造成北港上段河道水域垂线平均流速洪季大、枯季小的主要原因;大型工程的建设是该水域落潮优势增强的主要影响因素;北港上段河道水域含沙量变化可能与近岸工程建设、入海泥沙量减少等因素有关。

简介：AWRF-Chemmodelincludingacomprehensivegas-phasenitrogenchemistrymodulewasusedtosimulateaseveredusteventappearingintheeasternChinaon19-25March,2002.ThemodelingresultwellreproducedPM10concentrationsinvariousdistancesfromthedustsourcesandthetransportpathwayoftheduststrom.TheresultsshowedthatboththeconcentrationsandthedrydepositionfluxesofPM10increasedovertheChinaseasduringthedusteventfollowingthepassageofacoldfrontsystem.ThemaximumfluxesofPM10intheYellowSeaandtheEastChinaSeaduringthedusteventwere5.5and8.4timesofthosebeforetheevent,respectively.However,thetemporalvariationsofthedrydepositionfluxesofparticulateinorganicnitrogendifferedovertheYellowSeafromthoseovertheEastChinaSea.NitrateandammoniuminthewholenorthernChinarapidlydecreasedbecauseoftheintrusionofdust-loadedairon19March.ThedustplumearrivedintheYellowSeaon20March,decreasingtheparticulateinorganicnitrogeninmassconcentrationaccordingly.TheminimumdrydepositionfluxesofnitrateandammoniumintheYellowSeawereabout3/5and1/6ofthosebeforethedustarrival,respectively.Incontrast,whenthedustplumecrossedovertheYangtzeDeltaarea,itbecameabundantinnitrateandammoniumandincreasedtheconcentrationsanddrydepositionfluxesofparticulateinorganicnitrogenovertheEastChinaSea,wherethemaximumdrydepositionfluxesofnitrateandammoniumincreasedapproximatelyby4.1and2.6timesofthosepriortothedustarrival.