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  • 简介:ThegovernmentofPakistanhasannouncedanewhydropowerpolicywhichaimstomeetthefutureelectricitydemandsofthecountryatreasonablerated.TheMinistryofWaterPowerResourceshasorganisedacommitteetoprepareitsrecommendationsforthenewpolicy.Thecommitteewillalsoidentifynewprojects.

  • 标签: 巴基斯坦 水力发电 工程建设 电力需求
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  • 简介:Activatedcarbonfiberisonekindofimportantadsorptionmaterials.Thesenovelfibrousadsorbentshavehighspecificsurfaceareasorabundantfunctionalgroups,whichmakethemhavegreateradsorption/desorptionratesandlargeradsorptioncapacitiesthanotheradsorbents.Theycanbepreparedasbundle,paper,clothandfelttomeetvarioustechnicalrequirement.Theyalsoshowreductionproperty.Inthispaperthelatestprogressonthestudiesofthepreparationandadsorptionpropertiesofactivatedcarbonfibersisreviewed.Theapplicationofthesematerialsindrinkingwaterpurification,environmentalcontrol,resourcerecovery,chemicalindustry,andinmedicineandhealthcareisalsopresented.

  • 标签: 制备 结构 应用 活性炭纤维 吸附剂 吸附速率
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  • 简介:区别,房间的逐步的专门化,andtransdifferentiation,一种房间类型的明显的切换进另外一个,捕获许多干细胞聚光灯。但是dedifferentiation,在它前的一个房间的发展颠倒重新发明自己,也是一个重要过程。在多细胞的有机体,细胞的dedifferentiation是位于新干细胞系的totipotency,新生和形成下面的主要过程。Inhumans,dedifferentiation经常与carcinogenesis被联系。在动物的cellulardedifferentiation的学习,与细胞命运开关和决心有关的特别地早的事件,被一个合适的、方便试验性的系统的缺乏限制。dedifferentiation的经典例子是在urodele两栖动物的手足和尾巴新生,例如蝾螈。最近,当与适当信号或材料刺激了时,几个调查者证明了某些哺乳动物的房间打罐头嬉痞的集会duced到dedifferentiate到祖先房间。这些发现打开研究人员们可能由在vivo导致细胞的dedifferentiation提高哺乳动物的内长的再生能力的可能性。

  • 标签: 细胞分化 干细胞 细胞研究 实验
  • 简介:Severeacuterespiratorysyndrome(SARS)emergedin2002asasevereandhighlycontagiousinfectiousdiseasethatrapidlyspreadtoanumberofdifferentcountries.Thecollaborativeeffortsoftheglobalscientificcommunityhaveprovided,withinashortperiodoftime,substantialinsightsintothemolecularbiologyandimmunologyofSARS-CoV.Althoughtheoutbreakhasbeencontained,thereiscontinuousconcernthatthevirusmayresurfaceintothehumanpopulationthroughseasonalchanges,animalreservoirsorlaboratoryaccidents.TheseveremorbidityandmortalityassociatedwithSARSmakeitimperativethataneffectivevaccinebedevelopedtopreventreemergenceandepidemicsinthefuture.Cellular&MolecularImmunology.2005;2(2):101-105.

  • 标签: SARS 疫苗接种 非典型性肺炎 分子免疫 免疫反应
  • 简介:在这份报纸,我们在作者组进行的可压缩的骚乱上考察一些最近的研究,它在为围住墙的骚乱开发抑制大旋涡模拟(CLES)上在可压缩的各向同性的骚乱(市民)和应用研究上包括基本研究。在第一部分,我们实质上以最新建议的混合compactweighted开始为被用来构造市民的一个系统的数据库的市民模拟的nonoscillatory(WENO)计划。用这个数据库,可压缩的骚乱的各种各样的基本性质被检验了,包括统计并且从一个Lagrangian观点的可压缩的模式,shockletturbulence相互作用,小规模上的本地压缩的可能性的效果,动能串联,和一些初步的结果可伸缩。在第二部分,CLES的想法和公式被考察,处于可压缩的工程问题由CLES和一些应用程序的确认列在后面。

  • 标签: 可压缩湍流 大涡模拟 CIT 基础研究 各向同性 WENO
  • 简介:TheconstructionoftheTisAbayIIhydropowerprojectinEthiopia,whichisconsideredtobeakeyelementinEthiopia'spowerdevelopmentprogramme,isnearingcompletion.ItishopedthattheUS$63Mproject,whichisfundedbytheEthiopiangovernment,willhelpthecountrymeetits10-12%annualgrowthinelectricitydemandandsupporttheexpandingeconomy.

  • 标签: 埃塞俄比亚 水力发电 发展规划 工程建设 电力需求 经济发展
  • 简介:Chlamydia,ahumanpathogenthatmediateschronic,persistentandrepeatedinfectionprogress,iscapableofinflictingpermanentscarformation.Atypicalreticularbodyisfoundinpersistentinfections.ChlamydialHsp60,interferon(IFN)-gammaandothercytokinesfunctioninthecourseofrepeatedinfection.Immunopathologicalfactorsmediatechronicinfection.

  • 标签: 衣原体感染 发病机制 干扰素 慢性传染病
  • 简介:AbstractIn vitro maturation (IVM) has been used in clinical settings for 30 years. The merits of IVM include that it needs a relatively small amount of hormones and short treatment period. However, because the effectiveness of IVM is lower than that of controlled ovarian hyperstimulation, there are few centers routinely use IVM, and it is only applicable to a few special populations. In this article, several oocyte sources related to IVM have been discussed and the effects of gonadotropin priming and triggering on IVM are described. Furthermore, we have reviewed the optimization of IVM culture conditions in recent years along with the effects of IVM on genes of oocytes and cumulus cells and the obstetric and neonatal outcomes. We aim to provide indications for future improvement of IVM technology so that the success rates of IVM technology in special populations can be improved. We hope that this mild and natural protocol can be applied to more populations, including individuals with normal ovulation.

  • 标签: C-Type Natriuretic Peptide Cyclic Adenosine Monophosphate Epidermal Growth Factor-Like Peptides In vitro Maturation Melatonin Oocyte
  • 简介:Grapheneisaone-atom-thickplanarsheetofsp2-hybridizedorbitalbondedhoneycombcarboncrystal.Itsgaplessandlinearenergyspectraofelectronsandholesleadtotheuniquecarriertransportandopticalproperties,suchasgiantcarriermobilityandbroadbandflatopticalresponse.Asanovelmaterial,graphenehasbeenregardedtobeextremelysuitableandcompetentforthedevelopmentofterahertz(THz)opticaldevices.Inthispaper,thefundamentalelectronicandopticpropertiesofgraphenearedescribed.Basedontheenergybandstructureandlighttransmittancepropertiesofgraphene,manynovelgraphenebasedTHzdeviceshavebeenproposed,includingmodulator,generator,detector,andimagingdevice.Thisprogresshasbeenreviewed.FutureresearchdirectionsofthegraphenedevicesforTHzapplicationsarealsoproposed.

  • 标签: 光学器件 太赫兹 石墨 光学特性 杂化轨道 光学性质