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  • 简介:Theetiologyofneurodegenerativediseasesisdiverse,howevermostofthemsharecommoncharacteristics:accumulationofmisfoldedproteins,chronicandsustainedneuroinflammation,andthedysfunctionanddeathofcertainpopulationsofneurons.ThebrainofAlzheimer’sdisease(AD)patientspresents

  • 标签: 神经退行性疾病 错误折叠 炎症反应 功能障碍 神经元 蛋白
  • 简介:Thispaperdiscussestheharmonicproblemsincontrolsystemsfromtwoaspects:Oneistheharmoniccontrolamongdifferentsubsystems,andtheotheristheharmoniccontrolamongmultipleinputs.Someintrinsicproblemsinsuchsystemsarediscussed.Itispointedoutthatsomesubsystemsmustbeunstabletostabilizethewholeinterconnectedsystembyanexample.Especiallyfordiscrete-timemulti-inputsystems,anecessaryandsufficientconditionispresentedforthestrictdecreaseofthequadraticoptimalperformanceindexwiththecontrolinputextensions.Thisshowsanessentialdifferencebetweensingle-inputandmulti-inputcontrolsystems.Finally,somefutureresearchdirectionsarediscussedinharmoniccontrolofinterconnectedsystems,allocationofmulti-controlinputs,fault-tolerantcontrol,andfault-diagnosis.

  • 标签: 控制系统 多输入系统 谐波控制 波面 充分必要条件 互联系统
  • 简介:Anoveltwo-wayrotaryjoint(SandPband)isdescribed.ForSbandrotaryjoint,VSWRislessthan1.2overthefrequencyrangefrom1.2GHzto4.4GHz.ForPbandrotaryjoint,thestructureofthereentrantresonatorisusedtoreducethelengthoftherotaryjointtoaboutλ/4,andthespecialandsmallsizerequirementissatisfied.

  • 标签: REENTRANT ROTARY junctor TWO WAY ROTARY
  • 简介:二新chalcones,尾,2鈥?4鈥?5鈥?tetramethoxychalcone1,并且尾,2鈥?5鈥?trimethoxyfurano[4鈥?5鈥?3鈥?4鈥瞉-chalcone2从乙醇被获得Fordiacauliflora的茎的乙醇摘录的醋酸盐可溶的部分。他们的化学结构被分光镜的证据的分析决定。

  • 标签: 查尔酮 乙醇提取物 醋酸乙酯 化学结构 查耳酮
  • 简介:Twonewterpenes,wilfornineH(1)andtriptobenzeneQ(2)wereisolatedfromTripterygiumwilfordii,aswellas11terpenes.Theirstructureswereelucidatedbyspectroscopicmethods.Compounds5,9-13showedsignificantimmunosuppressiveactivities.

  • 标签: 萜类化合物 雷公藤 波谱方法 免疫抑制
  • 简介:关键词针灸治疗-头疼-症候群区别处理-医药记录鍏抽敭璇??堝埡鐤楁硶-澶寸棝-杈ㄨ瘉璁烘不-鐥呮CLC数字R246.1作者:黄蔷(1979鈥?,女性,居民,药的主人

  • 标签: 针刺疗法 头痛 辨证论治 病案
  • 简介:新周期的diarylheptanoid,1,5-epoxy-3-hydroxy-1-(3-methoxy-4,5-dihydroxyphenyl)-7-(4-hydroxyphenyl)-heptane(1),以及新单音的萜烯,10-O-β-d-glucopyranosyl-hydroxycineole(2)从姜officinale的根茎被孤立。混合物的结构1和2被建立基于他们的光谱数据。另外,这些混合物的抗氧化剂活动也被测量。

  • 标签: 单萜 抗氧化剂 药理
  • 简介:从Isodon的天线部分,serra,二新ent-6,7-seco-kaurane-typediterpenoids,15,20β-dihydroxy-6β-methoxy-6,7-seco-6,20-epoxy-1,7-olide-ent-kaur-16-ene(1)和6,15-dihydroxy-20-aldehyde-6,7-seco-6,11-epoxy-1,7-olide-ent-kaur-16-ene(2)被孤立。他们的结构被分光镜的工具阐明。

  • 标签: 二特丁基 化学药理学 药物性能 化学分析
  • 简介:SijiaoIslandinShengsiCountyofZhejiangProv-inceislocatedatnorthofZhoushanIslands,theconfluenceofYangtzeandQiantangriver(N30°24′,E122°28′),79nauticalmilesfromShanghai,whereconvenientincommu-nicationandrichinwindenergyresourceswithanannualaver-agewindvelocityof7.1m/sandaverageeffectivewinddensityof410.4W/m~2,whichisamonghighestinthecountry.Since1976,theWindPowerLaboratorywassetupinShengsiCounty,aseriesofwindpowerexperimentswascarriedoutandaccumu-latedcertainexperiences.

  • 标签: ISLAND YANGTZE NORTH CONVENIENT river ELECTRICITY
  • 简介:Perhapsyouareafreshmanandatalosshowtomakethebestuseoftheweekend.Afterall,theweekendoncampusisverydifferentfromthatinhighschool.Totellthetruth,ImetwiththesametroubleasyouwhenIentereduniversity.However,littlebylittle,Ilearnedhowtospendtheweekend.HereI'dliketogiveyousomeadvice.1.Haveagoodrest.Wecan'talwaysputourselvesunderheavypressure,forexample,studyingdayandnight.Remember:wearenotmachines.Afterfivedays'hardwork,wearev...

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  • 简介:Weexamineanenergyharvestingsystemoftwomagnetopiezoelasticoscillatorscoupledbyelectriccircuitanddrivenbyharmonicexcitation.Wefocusontheeffectsofsynchronizationandescapefromasinglepotentialwell.Inthesystemwithrelativemistuninginthestiffnessoftheharvestingoscillators,weshowthedependenceofthevoltageoutputfordifferentexcitationfrequencies.

  • 标签: 振荡器 失谐 收获 能源 能量收集 耦合电路