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简介：ThebulbsofFritillariaspp.(Liliaceae)areusedinChinesemedicineasantipyretic,anti-tussive,expectorant,etc.Inordertosearchforthebioactiveconstituentsfromthisgenus,thebulbsoffourspeciesofmedicinalFritillariaplantshavebeeninvestigated.ThirteencompoundswereisolatedfromFritillariathunbergiiMiq.,threeofthemwerenewcompounds.FourteencompoundsfromFritillariathunbergiivar.chekiangensisHsiaoetK.C.HsiacollectedinDongyangofZhejiangProvince,fourofthemarenewcompoundsandanotheronewasfirstiso-

简介：TheChinaFanhaiHoldingGroupwillinvest22.8RMBinacoalchemicalprojecttobeconstructedinBaotoucity,In-nerMongolia,whichwillbeanothergiantcoalchemicalprojectafterthecoal-to-oilprojectconstructedbytheShenhuaCompany.ThisprojectwillbelocatedintheShangejiaChemicalParktooccupyatotalareaof680hect-

简介：TheobjectiveofthisstudyistodeterminethepropertiesofG.amplexifolia.Inthispaper,thechemicalcomposition,includingholocellulose,acid-insolublelignin,1%NaOHsolubility,benzene-ethanolextractivesandashcontent,wasconsideredforthevariabilitywithrespecttopositionsalongbambooculmheight(bottom,middleandtop),partsalongradialdirection(innerpartandouterpart)andages(1-yearand2-year).ThetestresultswerealsocomparedtothoseofmosothatiscommonlyplantedandusedinChina.Thisstudyindicatedthatboththeholocellulosecontentandthelignincontentininnerpartwerelowerthaninouterpart,butforextractivesandashcontent,thereversewastrue.Bambooagealsohadeffectonchemicalcomposition;boththeholocellulosecontentandtheashcontentintheculmof1-yearwerehigherthanthoseof2-year,whilethelignincontentandtheextractivecontentintheculmof1-yearwerehigherthanthoseof2-year.Highholocellulosecontent,lowlignincontentandextractivecontentwereadvantagesofG.amplexifolia.

简介：Theresearchona30mmelectrothermal-chemical(ETC)gunincludingtheoreticalsimulationandexperimentalresultsispresentedinthispaper,Thepredictionsofthetheoreticalmodelwhichiscomposedofthreeparts(i.e.,pulseformingnetwork,plasmageneratorandinteriorballistices)areingoodagreementwiththeexperiments.,Inaddition.wehaveperformdsomeliquidpropellantandsoildpropellantexperiments,respectively,Amongthesolidpropellantexperiments.wehaveinvestigatedtheignitionmodesofpropellantandhighvelocitylaunchere.Asaresult,the25:75mixtureofoctanceandhydrogenperoxdehasabettereffectthanotherliquidpropellants.Whenthepropellantsareignitednearbythebottomofprojectileinchamberbyusinganullagetubeconnectedwiththeplasmagenerator,thekineticenergyofprojectilewillincrease,whilethechamberpressurewilldecrease,Withatotalimputelectricalenergyof180kJ,theexitvelocityofprojectileisupto2.1km/sorso.

简介：ChemicalfluxesofAsianriversintooceansbeardifferentregionalvariations.Threezonesarecharacteristicofdistinctdissolvedsedimentloadsandyieldsandionicconcentration.RiversintooceansinChinaplayanimportantroleinAsiabecauseoftheirdifferentchemicalfluxes,amongwhichthosedrainingtheLoessPlateauhavehighionicconcentration,lowwaterdischargesanddissolvedsedimentloadsandyields.Climate,vegetation,soilandstratalithology,chemicalweatheringintensityandtectonicactivitydominatechemicalfluxesofAsianriversintooceans,anddifferentfactorshavedifferenteffectsonthechemicalfluxesofseparateregionalrivers.RisingoftheTibetPlateaualsoexertsanimportantinfluenceonchemicalcompositionsofriversoriginatingfromit.

简介：Marginatol(1),anewisopimarenediterpenoid,andfiveknowncompounds8(14),15-sandera-copimaradiene-1α，9α-diol(2),8(14),15-sanderacopimaradene-1α6β,9α-triol(3),germacrone(4),trans-ethylp-methoxycinnamate(5)andn-pentadecane(6)wereisolatedfromthehexaneextractofKaempferiamarginataCarey.Thestructureofmarginatol(1)wasestablishedas8(14),15-isopimaradiene-6α-olonthebasisofspectraldata(IR,MS，^1h-^-1H13^C-^1HNOESYandHMBC).Compounds2,3and4wereisolatedforthefirsttimefromthisplant.

简介：研究证明了许多化学成分由哌啶碱统治了，flavonoids例如lobelanidine，洛贝林，和lobelanine，从山梗莱属的植物chinensis愁相被获得了。试验性的研究和临床的应用也显示了那L。chinensis拥有很多项药理学活动(例如，利尿剂，choleretic，呼吸兴奋，反毒液，抗菌剂，和anticancer)。这篇论文集中于L的性质，化学成分，和anticancer活动。chinensis将在他们之中澄清连接，并且识别活跃anticancer混合物。这个工作为L的进一步的研究和开发用作基础。chinensis。

简介：Polyparaphenylene(PPP)ispreparedbyAlCl3-CuCl2catalystswithbenzeneasthemonomerandisdopedbychemicalmethodandN^+ionimplantation.Theinfluencesoftheconcentration,temperatureandtimeofchemicaldopingandthedose,energyandtemperatureofionimplantation,onPPPconductivityareinvestigated.TheresultsshowedthattheconductivityofPPPcanbeimproved4-5ordersofmagnitudebyionimplantationandtheconductivityofPPPcanreachabout0.11S·cm^-1bychemicaldoping.Thecomparisonofstabilityofthematerialconductivebehaviorbyusingthetwodopingmethodsispresented.Itshowsthationimplantationisbetterthanchemicaldopinginstabilizingtheelectricconductivebehaviorforthematerial.

简介：ThecurrentstatusofchemicalfertilizersproductionandconsumptioninChinaaswellastheirimportantrolesinChinesemodernagriculturearediscussedwithspecialconcernstotheenvironmentalissuesrelatedtochemicalfertilizeruse.Ontheonehand.thetotalamountofchemicalfertilizerproducedisinsufficienttomeettheagriculturalneeds.Ontheotherhand.theproductionandconsumptionofchemicalfertilizersinChinaareobviouslynotbalanced.Insomeareasoverapplicationofnitrogenfertilizersandlossofphosphatefertilizerduetosoilerosionhaveresultedinsomeundesirableenvironmentalproblemssuchasincreaseofnitrateinwaterandeutrophicationofwaterbodies.Maximumscientificusesoforganicmanuresincombinationwithreasonableuseofchemicalfertilizersarepartofgoodpracticesnotonlyinincreasuingsoilproductivityandkeepingsustainableagriculturedevelopmentbutalsoinminimizingtheirdetrimentaleffectsontheenvironment.

简介：通常为米饭谷物新颖决心被使用的二个化学方法为他们的效率被调查。方法1用bromothymol蓝色指示物做的，并且原则基于指示物根据存储米饭谷物的pH被改变在的颜色。方法2基于在米饭谷物的存储期间败坏的peroxidase活动。两个方法被用于六泰国大米的栽培变种的新鲜米饭索引的决心，四从非蜡制的米饭栽培变种(KDML105，ChaiNat1，ChaiNat2和Phitsanulok2)并且二从蜡制的米饭栽培变种(San-pah-tawng和RD6)。瑞斯样品被作为intheformsof稻并且擦亮米饭。新鲜米饭索引每二个星期在24个星期(六个月)的存储时期上用两个方法被决定。两个方法能够检测新鲜米饭索引，这被发现。化学答案的颜色关于米饭谷物的年龄变化了，它能spectrophotometrically被检测。作为稻被保留了的瑞斯谷物提供了更一致的结果。因为它简单、有效、便宜，方法1为工业申请被推荐。

简介：从宁夏枸杞（ＬｉｃｉｕｍｂａｒｂａｒｕｍＬ．）的果实（枸杞子）中分离得到１３个化合物，经光谱等方法鉴定其结构为８个长链脂肪酸（１～８），对羟基桂皮酸（ｐｃｏｕｍａｒｉｃａｃｉｄ，９），胡萝卜甙（ｄａｕｃｏｓｔｅｒｏｌ，１０），β谷甾醇（βｓｉｔｏｓｔｅｒｏｌ，１１），甜菜碱（ｂｅｔａｉｎｅ，１２），莨菪亭（ｓｃｏｐｏｌｅｔｉｎ，１３）。其中化合物１～１０为首次从枸杞子中得到

简介：　　ThemissionoftheChemicalProcessR&DDepartmentatDuPontPharmaceuticalsCompanyistosupplydrugsubstanceinatimelyfashionandtodiscover/developascalable,economical,environmentallyfriendlyprocessforthecommercialproductionofthebulkdrugsubstance.Severalexampleswillbepresentedtoillustrateourefforttoaccomplishthemission.Briefdiscussionwillincludethefollowingprojects:1)SynthesisofDMP728,acyclicpeptideofGPIIb/IIIainhibitor2)Methodforthepreparationofa-chloroboronicacid,akeyintermediateforDuP714,apotentthrombininhibitor3)ProcessresearchanddevelopmentofRoxifiban,apotentandorallyactiveGPIIb/Illainhibitor　　……

简介：在这研究，2kHzTonpilz投影机用Terfenol-D被设计并且在ATILA当模特儿。为为研究建模的目的，一个放射的头团更好展出，这被决定了在136公里直径播送当前的反应(TCR)，在回声发生在2.4kHz和118dBre的山峰价值的地方在1m的1Pa/A发生在12kHz。另外，在从头团的中心的46公里距离的门栓在2.4kHz，和115.3dBre的山峰价值提供回声在1m的1Pa/A发生在11.5kHz。这个优化图案与3公里厚度的聚氨酯被制作并且塑造。原型在海洋技术(NIOT)的国家研究所的声学的测试设备(ATF)被测试为它的在水下表演。基于结果，基本回声决心是2.18kHz和182dBre的TCR的山峰价值在1m的1Pa/A发生在14kHz。RS的最大的价值被发现是在在2.1kHz的频率的1m的190dBre1V/Pa。

简介：在四国盆的发行量在北方太平洋在副热带的旋回在自台湾东面的菲律宾海流向日本的暖流和水交换的小径起一个很重要的作用。介绍在四国盆部署的漂流的南船座被用来在盆学习发行量和水群众。轨道和从所有Argofloats导出的停车的深度速度领域在四国盆在2000m显示出逆旋风的发行量。在四国盆有inhanced旋涡活动，它在四国盆发行量模式上有大影响。温度的特征-咸度曲线显示有北方PacificOcean热带水(NPTW)，诺思太平洋副热带的模式水(NPSTMW)和在四国盆的北方PacificOcean中间的水(NPIW)。NPTW仅仅是32°N向南存在。盆的Inthe中间的部分，它是28°～31°N，133°～135°E，有一个融合区域。水集中在四国盆与水来自自台湾东面的菲律宾海流向日本的暖流混合。

简介：Insulinsecretorygranules(ISGs),agroupofdistinguishingorganellesinpancreaticβcells,areresponsibleforthestorageandsecretionofinsulintomaintainbloodglucosehomeostasis.ThemolecularmechanismsofISGbiogenesis,maturation,transportation,andexocytosisarestilllargelyunknownbecausetheproteinsinvolvedinthesedistinctstepshavenotbeenfullyidentified.Subcellularfractionationbydensitygradientcentrifugationhasbeensuccessfullyemployedtoanalyzetheproteomesofnumerousorganelles.However,useofthismethodtoelucidatetheISGproteomeislimitedbyco-fractionatedcontaminantsbecause1SGsareverydynamicandhaveabundantexchangesorcontactswithotherorganelles,suchastheGolgiapparatus,lysosomes,andendosomes.Inthisstudy,wedevelopedanewstrategyforidentifyingISGproteinsbyproteincorrelationprofiling(PCP)-basedproteomics,whichincludedISGpurificationbyOptiPrepdensitygradientcentrifugation,label-freequantitativeproteome,andidentificationofISGproteinsbycorrelatingfractionationprofilesbetweencandidatesandknownISGmarkers.Usingthisapproach,wewereabletoidentify81ISGproteins.Amongthem,TM9SF3,anine-transmembraneprotein,wasconsideredahighconfidenceISGcandidateproteinhighlightedinthePCPnetwork.FurtherbiochemicalandimmunofluorescenceassaysindicatedthatTMgSF3localizedinISGs,suggestingthatitisapotentialnewISGmarker.

简介：ThephotodegradationreactionrateofCHCl3inTiO2particulatesuspensionwasimperovedsignificantlybyHCl-treatment.TheeffectofHCl-treatmentonthephotocatalyticactivityofTiO2wasstrdiedinaPECcellbyusingIntensity-ModulatedPhotocurrentSpectroscopy(IMPS).ThemagntudeofphotocurrentresponseandthecharacteristicfrequenciesoftheupperandlowersemicirclesinthecomplexplaneofIMPSresponsewereanalyzed,andtheccathodicandanodicreactionprocessesofphotogeneratedholesandelectronswerediscussed.Theincreasesinthecathodicandanodicphotocurrentresponseandinthetimeconstantsofbothcathodicandanodicreactionprocessesofphotogeneratedholesandelectronswerediscussed.TheincreasesinthecathodicandanodicphotocurrentresponseandinthetimeconstantsofbothcathodicandanodicreactionprocessesindicatethatHCl-treatmentleadstotheimprovementofthephotocatalyticactivityofTiO2andachangeofthephotocatalytickineticmechanism.

简介：为用离子层析在水里决定化学的氧需求(货到付款)价值的一个新方法结合了nanoTiO2-K2S2O8共存系统被描述。photocatalytic氧化系统和nanoTiO2-K2S2O8共存系统能降级水里的有机化合物。在反应答案的所有包含硫的种类最后被转变到能被传导性察觉者在离子层析决定的硫酸盐。硫酸盐的电导率的变化与货到付款价值成正比。最佳的试验性的条件和察觉的机制被讨论。申请范围是10.0300.0mg?????贃??????踖????????┟???????????釱吗？？

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