简介:Ecologicalcityistheadvancedmodeofharmoniousdevelopmentofcity.Constantimprovementisbeingmadeinthedevelopmentofecologicalcity.However,buildingecologicalcityisanenormousprojectthatcallsforahugeamountofcapital.Thegovernmentfundisfarfromadequate.Thispaperprobesintothefundissueanddiscussesindetailthemechanismofinvestmentandfinancinginbuildingecologicalcityfromvariousaspectssuchasdiversificationoftheinvestmentsubjectsandthemodesoffinancing.
简介:哺乳动物的精子必须经历一系列生物化学、生理的修正,一起叫的capacitation,在在acrosome反应(AR)以前的女繁殖的道。尽管蛋白质kinases被显示在capacitation和AR期间涉及细胞内部的Ca2+的规定,这些修正的机制很好没被描绘。在现在的评论,我们总结一些涉及capacitation的发信号的事件。在capacitation过程期间,phosphatidyl-inositol-3-kinase(PI3K)是经由一个蛋白质kinaseA(PKA)依赖者的phosphorylated/activated由蛋白质kinaseCα的串联,和downregulated;(PKCα;)。PKCα;在capacitation的开始是活跃的,导致PI3Kinactivation。在capacitation期间,PKCα;象PP1γ一样;2被PKA依赖的机制降级,允许PI3K的激活。PKA的激活主要在capacitation期间取决于酸式碳酸盐依赖者生产的周期的腺苷monophosphate(营地)可溶的adenylylcyclase。PKA的这激活在肌动朊聚合导致增加,必需品为hyperactivated活动性的发展处理,它为成功的授精是必要的。肌动朊聚合被果仁2以二个方法调停:首先,果仁2为phospholipaseD(PLD)激活,和秒充当一个余因子,作为绑并且禁止象gelsolin那样的切断肌动朊的蛋白质的一个分子。gelsolin的酷氨酸phosphorylation为它的inactivation也在由Src家庭kinase(SFK)的capacitation期间是重要的。在AR以前,gelsolin被免除果仁2并且经历dephosphorylation/activation,导致AR,导致快F肌动朊depolymerization。
简介:Indespiteoffluctuationinrecentyears,thegrainyieldinChinahasbeenincreasing,whichrelievestheconflictbetweensupplyanddemandandturnsthesituationoffoodsecuritygood.However,becauseoftherapidincreaseinfoodconsumption,theconflictsoffoodqualityandstructureinthesupplyanddemandequilibriumhasbecomemoreandmoreobviousandthelong-effectivemechanismoffoodsecurityhasnotbeenestab-lishedyet.ItisfoundthatthefactorsaffectingfoodsecurityinChinaincludethescarcityanddissipationofresources,farmers’lowenthusiasminplantinggraincropsandtheinappropriatenessoftheemphasisandmeasuresofmacro-economicregulationandcontrol.Therefore,theauthorsadvancetooptimizeresourcesallocation,strengthenmacro-economicregulationandcontrolandpolicystimulationandestablishthemechanismofallocatinggrainproductioncost,tosetupthelong-effectivemechanismofChinafoodsecurityandkeepitstableinthelongterm.
简介:Soilsalinityisoneofthemostimportantproblemsofcropproductioninestuarineandcoastalzones.Improvementinsalttoleranceofmajorfoodcropsisanimportantwayfortheeconomicutilizationofcoastalzones.Thisstudyprovedthattheapplicationofsalicylicacid(SA)improvedthegrowthandyieldundersaltstressconditionsandinvestigateditsphysiologicalmechanismsforsalttolerance.TheinvestigationontheeffectofSAforsalttoleranceduringgerminationshowedthatthedecreasedratesofgerminationandgrowth(intermsofshootandrootlengths)bythesaltstressweresignificantlyincreasedbytheSAapplication(SA+NaCl).ThetreatmentofSAtothehighandlowsalinesoilsenhancedthegrowth,yieldandnutrientvaluesofrice.TheeffectsofSAonNa+,K+andCl–ionicaccumulationweretracedundersaltstressconditionbyinductivelycoupledplasmaopticalemissionspectrometryandionchromatography.ItwasrevealedthattheincreasedaccumulationofNa+andClˉionsbythesaltstresswerereducedbySAapplication.AnincreasedconcentrationofendogenousSAlevelwasdetectedfromtheSA-treatedricevarieties(ASD16andBR26)byliquidchromatographyelectrosprayIonization-tandemmassspectrometry.Theactivitiesofantioxidantenzymessuchassuperoxidedismutase,catalaseandperoxidasewereincreasedbysaltstresswhereasdecreasedbytheSAapplication.ThestudyprovedthattheapplicationofSAcouldalleviatetheadverseeffectsofsaltstressbytheregulationofphysiologicalmechanisminriceplants.Inspiteofsaltstress,itcanbeappliedtothecoastalandestuarineregionstoincreasethericeproduction.
简介:Globalwarmingisoneofthehottestenvironmentproblems.OneofthereasonsisthesharpincreaseofCO2inatmosphere.Soilrespirationinforestecosystemsaccountsto60%-90%oftotalecosystemrespirationandisthereforeoneofthekeycomponentsoftheglobalCcycle.Thispapersummarizeddifferentresponsesofsoilrespirationtoforestmanagementmeasures,anddescribedtherelevantresearchesathomeandabroadontheeffectofmanagementmeasureslikeharvesting,forestfertilization,soilimproving(Liming),litterremoval,andprescribedburningonsoilrespiration.
简介:Inthispaper,thefocusdepthdistributionofearthquakeswitheachmagnitudehasbeenanalyzed.Statisticdatashowthatthelowermagnitudeis,thewiderfocusdepthdistributes.Withlargermagnitude,thefocustendstobeconcentratedinupperormiddlecrustallayers.Weanalyzedthecauseoffocusdepthdistributionandexplainedtheprecursormechanismofsmallandmoderateearthquakeswithoccurringconditionandcharacteristicsofstrongearthquakes.Theresultsofthispapermaybeappliedtodeterminerisksitesofstrongearthquakes.
简介:ThegrainrefiningmechanismofC-Mnsteelsheetoncompactstripproduction(CSP)linewasinvestigatedinthisstudy.Thegrainwasabout100μmafterF1passanddecreasedallthewayoftherollingprocess(F2-F6)to15μm.Repeatedphasetransformationexperimentwasconductedtothesteelforgrainrefinement.Thephasetransformationat860℃and920℃canrefinethegrainsizeto7.5μm.
简介:Underpressured水库在Huatugou是普遍的()油矿西方在Qaidam盆高举,西方的中国。在在462和1248m之间的深度,在Huatugou油矿的晚第三纪水库的压力仅仅是大约40%~80%静水力学的压力。基于这些underpressured水库的地质的特征的研究,这个工作使用了液体包括分析和数字模拟调查创造这些反常压力的机制并且评估烃分发的特征。结果证明underpressured水库由undercompacted和厚mudrocks是全封上得好的。大规模构造在晚喜玛拉雅的戏高举在在Huatugou油矿的underpressure的产生的一个重要角色。在这个运动的开始,地由于阵发性的石油累积是overpressured。后来,结构高举并且侵蚀导致了多孔的反弹和温度减少,它生产了underpressure。
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简介:ItwasgenerallyconsideredthatcontaminationofthegeltypepolystyrenestrongbasicanionexchangeresinbyorganicmatterinnaturalwateristheresultofionexchangeandVanderwaal′sadsorptiononit.Onthebasisoflaboratoryandindustrialexperiments,thispaperconfirmedthattheinterreactionbetweenorganicmatterandresinpolymermatrixisprimarilycontroledbyaVanderwaal′sadsorption.