简介:摘要:中药材质量的安全、有效、产量稳定、质量可控是中药饮片、中药配方颗粒、中成药质量保证的物质基础,是保证中医临床疗效的关键。《中药材生产质量管理规范》是中药材规范化生产和质量管理的基本要求,首次提出了实行中药材生产全过程可追溯的管理目标。强调对中药材质量有重大影响的关键环节实施重点管理,同时对影响中药材质量的各个环节尽可能细化和明确规定。
简介:Itisnaturalforyoungpeopletobecriticaloftheirparentsattimesandtoblamethemformostofmisunderstandingsbetweenthem.Theyhavealwayscomplained,moreorlessjustly,thattheirparentsareoutoftouchwithmodemways;thattheyarepossessiveanddominant;thattheydonottrusttheirchildrentodealwithcrisis;
简介:Itwasdiscoveredseveraldecadesagothatthenaturalgeo-environmentcouldsubstantiallyimpactonthehealthofanimalsandhumans.However,despitethegrowthofevidencesupportingthisdiscovery,therehasnotbeenacloseinteractionbetweengeoscientistsandhealthscientistsinassessingtheneedtostudythevariousfacetsoftherelationshipsbetweenhumanandanimalhealthandair,water,soilsandrocks.Thisbookistimelyinclosingthatgapasstatedinitstitle.
简介:Inthispaper,byapplyingasimplifiedversionofLieb'sspin-reflection-positivitymethod,whichwasrecentlydevelopedbyoneofus[G.S.TianandJ.G.Wang,J.Phys.A:Math.Gen.35(2002)941],weinvestigatesomegeneralpropertiesoftheboeon-fermionHamiltonlan,whichhasbeenwidelyusedasaphenomenologicalmodeltodescribethereal-spacepairingofelectrons.Onamathematicallyrigorousbasis,weprovethatforeithernegativeorpositivecoupingV,whichrepresentsthespontaneousdecayandrecombinationprocessbetweenbosonandfermioninthemodel,thepairingenergyofelectronsisnonzero.Furthermore,wealsoshowthatthespin-excitationgapoftheboson-fermionHamiltonianisalwayslargerthanitschargedgap,aspredictedbythepre-palredelectrontheory.
简介:Asimple,lowcost,easilymaintained,andreliablefielddistortionsparkgaphasbeendevelopedtooperateatavoltageupto30kV.Theheaderconstructionnecessarytoattachthesparkgapswitchtoasingle12.5μF,40kV(10kJ)capacitorisdescribed.Themainfeaturesofthesparkgapareitswiderangeofvoltageoperation,highcurrentcapacity,lowinductanceandlonglifetime.Theperformanceofsparkgaphasbeentestedinaplasmafocusandresultsarepresentedinthisreport.
简介:Effectsofthreegapswhicharelarge(118m2),medium(86m2)andsmall(20m2),respectively,andundercanopyofTsugalongibracteataforestontheseedlingestablishmentofT.longibracteatawerestudiedthroughseedburialexperimentsfromDecember2003toJanuary2005inTianbaoyanNationalNatureReserveofFujian,China.TheresultsshowedthattheareaofgaphadanevidenteffectontheseedlingestablishmentofT.longibracteata.TheseedlingemergenceratesofT.longibracteatainplotsoflargegap,mediumgap,smallgapandundercanopywere10%,10%,4%and6%,representinganincreasingtrendalongwiththegapsizeincreasingwithoutasignificantdifference.Rainerodingandinsectsfeedingweretwomainfactorsleadingtoseedlingdeath.Thelargerthegapsizewas,themoreseedlingswerekilledbyrainerosionandthefewerseedlingswerekilledbyinsectsfeeding.Theemergencetimeofseedlingswasalmostsameinallplotswhiletheirdeathtimewasdifferentrespectively.Thegapsizehadasignificantimpactonseedlingsurvivalrate.Theseedlingsurvivalratewashighestinthemediumgapplot(27.0%)andnexttothehighestinlargegapplot(7.3%),andseedlinginsmallgapplotandundercanopyplotdiedoutafteronegrowingseason.Increasedlightsupplyingapswasfavorablefortheseedlingsgrowthandsurvival.IncreasedlightsupplyinthelargegapcouldenhancethegrowthofseedlingleafandrootofT.longibracteata,andtheseedlinginturnallocatedmoredrymasstorootandleaf,butithaslittleimpactonthegrowthofstem.ThisresearchindicatesthatT.longibracteataisapioneerspeciesanditsseedlingestablishmentneedamediumorlargegap(>50m2).