简介:Resinsofcomplexesmadefromagarose-Ce4+(RCA-Ce)andchitosan-Ce4+(RCC-Ce)wereprepared.Hydrolysisratesofmethamidophos,omethoateandchlorpyrifostreatedbyRCA-Cewere32.39%,27.12%and46.62%,respectively,thoseofchlorpyrifosandmethamidophosinmungbeansproutjuice38.28%and35.45%,andthatofchlorpyrifosinteaextract59.76%.HydrolysisratesofproteininteaextracttreatedbyRCA-Ceincreasedby86.46%.RCC-Cecouldbeemployedintheapplejuiceproduction.Thecontentsofmethamidophosandparathion-methylinthejuicetreatedbyRCC-Cedecreased58.76%and71.92%.Furthermore,RCC-Cewasusedtoclarificationforbeerbythewaysofacolumn.RCC-Cecouldhydrolyzesensitiveproteinandincreasecontentsoffreeaminoacidinthebeer.Therefore,thebeertreatedbyRCC-CecouldstayoxidationandagingprocedureduetosomemetalionsbeingabsorbedbyRCC-Ce.
简介:四新triterpenesaponins,和五已知的混合物(5-9),mandshunosidesF-I(1-4)从铁线莲mandshurica的根和根茎被孤立。他们的结构根据分光镜的证据和水解作用产品被阐明。Bisdesmosidicsaponin(3-9)在51.3%-的范围与抑制比率显示出没有生产的谦虚抑制64.6%在50摩尔
简介:Twoseriesofnewcompounds:thealiphaticacylaminoethylglycines(Ⅰ)andtheircyclo-condensationproducts-allphaticacylaminoethylplperazlnones(Ⅱ)weresynthesized.Theresultsofbactericidalandbacteriostatictestsshowthatthetwoseriesofcompoundsaregoodbactericldalagents.
简介:ThedemofacilityofchinaADSinjectorIIwasinstalledinthetunnelin2014.Theon-sitelayoutofdemofacilityisshownintheFig.1.ThedemofaclitymainlyincludesECRIS,LEBT,RFQacclerator,MEBTandTCM6.TheTCM6iscomposedbysixSCHWRcavity,sixSCsoleniodsandfiveBPMs.TheTCM6willbetheprototypeforthefuture2025MeVCADSsuperconductinglinac.ThebeamcommissioningofCADSInjectorIIstartedinJune2015.Itmainlyconsistsofthreesteps.
简介:Basedonthefloodaffectedarea(FA)dataoftheprovincesinChinafrom1950to2005,thearticlediscussesthechangeofthefloodpatternsinChina,andinvestigatesitsrelationshipwithclimatechangeandhumanactivities.ThefloodcentershiftedfromNorthChinaandtheYangtze-Huaihebasininthe1950stowardsthesouth,northandwestofChina,andlocatedinthesouthoftheYangtzeRiverandSouthChinaafterthe1990s.TheFAinthewesternprovinceswascontinuouslyontherisesincethe1950s.TherearetwocharacteristicsforthefuturefloodpatterninChina.Thepatternof'floodinthesouthanddroughtinthenorth'dependsonthenorth-southshiftofthemaximumrainfallregionineasternChina.ThefloodintensificationtothewestofHuHuanyong'slinemainlyresultsfromtheincreaseofrainfall,extremeprecipitationandthemeltingofglaciersunderthebackgroundofhumanactivitymagnification.
简介:CymbopogoncitratusisawidelydistributedperennialherbbelongingtothePoaceaefamilyandhasbeenextensivelyconsumedforitsmedicinal,cosmetic,andnutritionaleffectsforcenturies.Alargenumberofreportshavebeenpublisheddescribingthepharmacological,biological,andtherapeuticactionsofthisherb.Inthisreview,wesummarizedtheliteraturesonrelatedstudies(uptoJanuary,2014)thathighlightedthepharmacologicandbiologicaleffectsofthemajorphytochemicalsisolatedfromC.citratusextractsanditsessentialoil.ThecomponentsoftheessentialoilsfoundinC.citratushaveasimilarpharmacokineticproperties,includingabsorption,distribution,metabolism,andexcretion.Theyarequicklyabsorbedfollowingoral,pulmonary,anddermaladministration.Basedonthepublishedreports,itcanalsobeinferredthat,afterabsorptionfromthesmallintestine,somephytochemicalsinC.citratuscanundergooxidation,glucuronidation,sulfation,and/orO-methylation.Excretionisthroughurine,fecesand/orexpiredvolatiles.ThebiotransformationreactionsofC.citratusbioactiveconstituentsareessentialforitsrelativelysafeconsumptionandtherapeuticapplications.ThedataavailablesofarwarrantfurtherstudiesevaluatingC.citratuspharmacokinetics.ReliablepharmacokineticdatainhumanswouldbecriticalforabetterunderstandingofthethesystemichandlingofC.citratus.
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简介:Thesynthesisofporphyrinnitrogenmustardsfromdeuteroporphyrinand3,8dialkyloxyhematoporphyrinmethylestersthroughreduction,bro...
简介:ByapplyingtwononlinearGrangercausalitytestingmethodsandrollingwindowstrat-egytoexploretherelationshipbetweenspeculativeactivitiesandcrudeoilprices,theunidirectionalGrangercausalityfromspeculativeactivitiestoreturnsofcrudeoilpricesduringthehighpricephaseisdiscovered.ItisprovedthatspeculativeactivitiesdidcontributetohighcrudeoilpricesaftertheAsianfinancialcrisisandOPEC'soutputcutin1998.TheunidirectionalGrangercausalityfromreturnsofcrudeoilpricestospeculativeactivitiesissignificantingeneral.Butafter2000,withthesharpriseincrudeoilprices,thisunidirectionalGrangercausalitybecameacomplexnonlinearrelationship,whichcannotbedetectedbyanylinearGrangercausalitytest.
简介:TheeffectsonhepaticEROD(7-ethoxyresorufinO-deethylase)inMugilso-iuyexposedtobenzo(a)pyrene(BaP),pyreneandtheirmixturesofequalconcentrationwereinvestigated,atconcentrationsof0.1,1.0,5.0,10.0,50.0μg/dm3,inexperimentalcondition.Time-effectsanddoseresponseofthebiochemicalindexswereobserved.TheresultsshowedthatthehepaticERODactivitieswereinducedbytheexposureofBaP,pyreneandtheirmixturesathighconcentration.Dose-responseconnectionswerethatthehepaticERODactivitieswereelevatedwithincreasingconcentrationofthepollutants.ThecombinedeffectofBaPandpyreneat1:1concentrationratioonhepaticERODactivitywasantagonism.
简介:3α-bromo-epipicropodophyllinwaspreparedanditsinhibitionactivitiesagainstKBcellsandL1210leukemiacellsinvitroarehigherthanthoseofVP-16,awidelyuseddruginclinicatpresent.ThisisthefirsttimetointroducesubstitutionatC-3ofring-Cintheworkofmodifyingstructureofpodophyllotoxin.Itcanbetransformedeasilyto4β-hydroxy-2,3-ene-apopicropodophyllinunderbasiccondition,sothat,correspondingderivativesof2,3-ene-apopicropodophyllinwithsubstitutiononcarbon-4couldbesynthesized.Thiscompoundcanberegardednotonlyasaleadingcompoundtobemodifiedbecauseofitsantitumoractivities,butalsoasanintermediateforthestructuretransformation.
简介:Juglansmandshurica格言的绿皮的摘录是为学习它的杀虫的活动并且分析活跃部件的提取bycommon方法。白酒摘录和氯仿摘录分开的Resultsshowed(用氯仿fromalcohol摘录分开了)J的形式绿色皮。mandshurica对LymantriadisparL的幼虫在接触toxicityand胃毒性举办杀虫的活动...在摘录forfive天的申请以后,为两篇摘录的Lymantriadispar的幼虫的改正的死亡是在≥的集中的超过50%in接触毒性和胃毒性5g·L~(-1)。为白酒摘录和摘录的氯仿部分的insecticidalactivity是在在胃毒性的接触toxicitythan的更多的效果,但是在杀虫的活动的重要差别都不是摘录的foundbetween白酒摘录和氯仿部分。在从绿皮of/mandshurica的氯仿partof摘录的活跃部件被GCMS分析。分析结果证明在氯仿的活跃部件摘录分开的thatthe是:(1)juglone(5-hydroxy-l,4-naphthaoquinone),相对内容27.11%,(2)1,5-Naphthalenediol,相对内容9.52%,(3)7-Methoxy-l-tetralone,相对内容6.81%,(4)Benzofuran,2,3-dihydro-,relativecontent6.76%,(5)4-Hydroxy-2-methoxycinnamaldehyde,相对内容3.99%,(6)2-Methoxy-4-vinylphenol,相对内容3.05%。
简介:Stablesilvernanoparticleswassuccessfullysynthesizedbychemicalreductionofsilvernitrateinanionicliquid,1-n-butyl-3-methylimidazoliumtetrafluoroborate([BMIM]·BF4)atroomtemperature.ResultsofUV-Visdiffusereflectancespectroscopyshowas-preparedAgnanoparticlesexhibitatypicalemissionpeakat400―430nm.Byvaryingthereactiontemperatureandtheprecursorconcentration,thesizeandtheshapeofthesilvernanoparticlescouldbeeasilycontrolledundermildconditions.Analysesoftransmissionelectronmicrographs,X-raydiffractionpatternandX-rayphotoelectronspectrumfurtherrevealthatthesilvernanoparticleswerecoatedincompletelyby[BMIM]·BF4.Microbialexperimentsindicatethatas-preparedsilvernanoparticlesshowawidespectrumofantimicrobialactivitiesandhavebetterantimicrobialactivitiestoPseudomonasaeruginosathansilvernitratewiththesameconcentrationofsilver.