简介：ＴｈｅＭａｉｋｅｏｆＣｈｉｎａ＇ｓＮｏｒｔｈｗｅｓｔＴｈｅｙ＇ｒｅｈｏｎｅｓｔ，ｈａｒｄｗｏｒｋｉｎｇ，ｐｏｏｒ，ａｎｄｃｏｍｐｌｅｔｅｌｙｄｅｖｏｉｄｏｆｇｒｅｅｄ－ｔｈｅｙ＇ｒｅＣｈｉｎａ＇ｓｓａｌｔｏｆｔｈｅｅａｒｔｈ．ＢｙＨＥＹＡＮＧＵＡＮＧ...

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简介：1.GeneralreviewThefirst330kVtransmissionlineinNorthwestChinafromLiujiaxiaHydroPowerStationthroughQinanSubstationtoTangyuSubstationwascommissionedin1972.Intheseventies,accompany-ingthecommissioningofHanchengandQinlingThermalPowerPlantsinShaanxiProvince,the330kVtransmissionlinesfrom

简介：ＧｒａｖｉｔａｔｉｏｎａｌｅｆｆｅｃｔｏｆｗａｔｅｒｃｉｒｃｕｌａｔｉｏｎｉｎｔｈｅｎｏｒｔｈｗｅｓｔＹｕｎｎａｎＭｉｎ－ＹｕＪＩＡ；（贾民育）Ｓｈａｏ－ＡｎＳＵＮ；（孙少安）Ａｉ－ＭｉｎＸＩＡＮＧ；（项爱民）ａｎｄＤｏｎｇ－ＺｈｉＬＩＵ（刘冬至）（...

简介：ＲｅｍａｒｋａｂｌｅＡｃｈｉｅｖｅｍｅｎｔｓｉｎＰｏｖｅｒｔｙＡｌｌｅｖｉａｔｉｏｎｉｎＮｏｒｔｈｗｅｓｔＣｈｉｎａ￥／／Ｔｈｅｅｘｔｅｎｔｏｆｐｏｖｅｒｔｙｉｎｔｈｅ＂ＳａｎＸｉＡｒｅａｓ＂ｈａｓｂｅｅｎｇｒｅａｔｌｙａｌｌｅｖｉａｔｅｄｉｎｔｈｅ...

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简介：Thispaperpresentsapreliminaryassessmentofthehydrogeologicalcharacteristicsofakarstmountainouscatchment,theSuoiMuoiRivercatchment,inthenorthwestofVietnam.Thecatchmentislocatedat600-700ma.s.1.andcoversanareaof284km.Exposedlimestoneoccupies32%ofthetotalcatchmentarea.Varioustypesofassessmentshavebeencardedout,includinggeologicalandhydrogeologicalfieldsurveys,cavesurveys,dye-tracertests,meteorologicalandsurfacewatermonitoring.Geologicalstudiesandcavesurveyshaveidentifiedthemostimportantactivecave/conduitsystemswithinthecatchment.Althoughthesedataareessential,theyareinsufficienttomakeacomprehensiveappraisalofthehydrologicnatureofthecatchmentunderinterest.Anattemptwasmadetocalculateaglobalwaterbalanceofthecatchment,basedonshort-term(15months)meteorologicalandstreamfiowrecords.Theresultsshowthat,despitetheexistenceofanumberofsubstantialcavernconduitsystems,thegroundwatersystemofthecatchmentisgovernedbythefracture/fissurematrix.Thecavernconduitsystemsonlycollectgroundwaterfromtheadjacentfracturematrixand/orconnecttopographicallyisolatedsurfacewatercourses.Thegroundwaterstorageofthecavernconduitsystemsappearstoberegionallyinsignificantincomparisonwiththegovernedfracturematrixgroundwatersystem.``

简介：NorthwesternareaisthemostaridandunderdevelopedareainChina.Lotsofresearcheshavebeendonetofindtheapproachestoalleviatepoverty.Buttherearesomeproblems,forexample,howtoinvest,howtousecapital,andwhytheutilizationrateisambiguous.Water,capitalandhumanresourcesareanalyzedinthispapertobecomparedwiththeirUtilizationrates.Asaresult,accordingtothedependencesofeconomicgrowthonthoseresources,anewapproachhasbeenselectedtoorganizetheintegrationwaysamongtheseresourcesforeconomicdevelopmentinnorthwesternChina.TheefficientwaystodevelopnorthwesternChinaare:firstly,usethewantingresourcesmosteffectivelytomakeanefficientintegrationmodelofmultipleresources.Forexample,enhancetheutilizationrateofwatertoraisethevalueofotherresources.Secondly,investmoreinbasicfactorsforeconomicdevelopmenttoupgradethecompetitivenessinthewesternChina.Forexample,investmoreinprimaryeducationandsustainabledevelopmentofbasicnaturalresourcesinordertohavemorepowerforsustainabledevelopment.

简介：白垩纪碳酸盐存款在伊朗的西北是更加广泛地分布式的并且形成大多数沉积单位与尖不顺从在这些单位上扔了的区域和不同新生代的paleohighs。西北的伊朗的白垩纪stratigraphic单位能被划分成三个主要范畴：碎屑状的、浅碳酸盐并且远洋。碎屑状的外形包括集团企业，角砾岩和有细密纹理的碎屑状的组和碳酸盐外形由公海(A)，酒吧(B)，泻湖(C)，和潮汐的公寓的microfacies的系列组成。有不同踪迹石块的相对深的碳酸盐存款也是在伊朗的西北的白垩纪沉积环境的更深的部分的指示。与狭窄的Neotethys海洋(Khoy-Zanjan)的扩大的参考，架边缘Neotethys海洋的沉积环境能为Azarshahr大不里士区域被假定，在Varaghan的海岸的flysch和clastics外形在此随深度的增加向北部分扔了。由在现在的学习期间使用不同沉积外形的狭窄的Neotethys海洋的扩大上的调查被看作在伊朗和中东的西北的区域完成白垩纪时间的paleogeographic数据的重要的步。

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简介：Recently,wecarriedouttheNationalNatureScienceFoundationofChina(No.41273033)andSpecialFundforBasicScientificResearchofCentralColleges(No.310827153407)andmadesomeadvancesasfollows.ThemainresearchachievementsofthePaleozoicvolcanicrocksinnorthwestChinaincludetwoaspects:

简介：Sand-duststormsaretheresultoftheintegratedinfluencesofclimate,geography,societyandhumanfactors.Atheoreticalframeworkisbuilttoexplainthecoherenceofpopulationgrowth,agriculturechangeandenvironmentaldegradation.Onthebasisoftheanalysisofthecausesofthesand-duststormintermsofhumanfactors,adiscussionwillbegiventoshowthatthesefactorsareinternallyconsistentwiththetheoreticalframework.Afterthat,itwilllookatChina'sAgenda21andtrytofindrelevantmeasurestoreducesuchlargesand-duststormshappeninginNorthwestChinaandeventuallymakethisareadevelopsustainably.

简介：ThefirstwindpowerprojectinGansu,YumenWindPowerFarmbelongingtoGansuJieyuanCompanywasbuiltupin1997.Upto2005,therewere74windpowerunitsinoperationinJiajinPowerGrid.Theirinstalledcapacitytotaled52.2MW.Atpresent,thethirdandfourthphaseprojectsareunderconstruction.Thesetwoprojectswillbeequippedwith68x850kWunits.Itisexpectedthatalltheunitswill

简介：陆地表面变化由于陆地空气相互作用联合的建筑群完成地区性的气候。从1995～2000，在植被密度的减少和地面级的热力学的活动的增加被多重数据源在西北中国记录了，包括气象学，从中等范围的天气预报(ECMWF)的欧洲中心的重新分析，国家海洋、大气的管理“s(NOAA)预付很高的分辨率辐射计(AVHRR)和初学者运作垂直更健全(TOVS)卫星遥感数据。作为地面级的热力学的活动增加，区域向沙漠集成的从包围的潮湿的空气(并且半沙漠)区域，引起有高植被盖子的区域更逐渐地变得干旱。而且，土地出现在西北中国的变化为在全部的云量的减少负责，在low和中云的部分的衰落，高云量的增加(由于热力学的活动)并且另外的地区性的气候的改编。这被建议，在1995开始，这些云量变化贡献了一个“温室”效果，导致快速的气温增加和在西北中国上被观察了的另外的地区性的气候影响。

简介：AIM:TodescribetheprevalenceanddemographiccharacteristicsofcornealblindnessinanurbanandruralregionofNingxia,locatedinthenorthwestpartofChina.METHODS:Astratified,randomizedsamplingprocedurewasemployedinthestudy,includingurbanandruralareaofallagegroup.Visualacuity,anteriorsegmentandocularfunduswerechecked.Relatedfactorofcornealdisease,includingage,gender,educationstatus,ethnicgroup,locationandoccupation,wereidentifiedaccordingtouniformcustomizedprotocol.Aneyewasdefinedtobecornealblindnessifthevisualacuitywas<20/400duetoacornealdisease.RESULTS:Threethousandindividuals(1290fromurbanareaand1710fromruralarea)participatedintheinvestigation,witharesponserateof80.380%.Theprevalenceofcornealblindnesswas0.023%inbotheyesand0.733%inatleastoneeye.Theblindnessinatleastoneeyewithvariedcauseswaspresentin106participants(3.533%)andinbilateraleyesin34participants(1.133%).Thecornealdiseasesaccountedfor20.754%ofblindnessinatleastoneeyeand20.588%ofbilateralblindness.TheprevalenceofcornealdiseasewashigherinolderandHanethnicgroup,especiallythosewhooccupiedinagricultureandoutdoorwork.Peoplewithcornealblindnessweremorelikelytobeolderandlowereducation.Ruralpopulationweremorelikelytosufferfrombilateralcornealblindnessthantheurbanpopulationin≥59-yeargroup(χ2=6.716,P=0.019).Infectious,traumaandimmunecornealdiseasewerethethreeleadingcausesofcornealdisease.Traumacornealdiseasewasmorelikelyleadingtoblindnessinoneeye.However,infectiousandimmunecornealdiseasesmakemorecontributiontothebilateralcornealblindness.CONCLUSION:CornealblindnessisasignificantburdenofinNingxiapopulation,encompassingavarietyofcornealinfectionsandtrauma;themajorityofthosewereavoidable.Healthpromotionstrategiesandgoodhygienicconditionshavetobedeveloped.

简介：Beingabundantinhydropower,coal,windenergyandsolarenergyetc.,NorthwestChinaisanimportantenergybasewithgreatpotential.Inrecentyears,alongwiththevigorousdevelopmentoftheenergybase,the

简介：Lunnan()低在开发的地方，高举在奥陶纪和含碳的水库的冷凝物水池的数量，在北方定位Tarim盆高举，西北中国。自从喜玛拉雅的运动，Lunnan区域经历了集中的煤气的侵略，引起在奥陶纪水库共存的累积的多重类型。Geochemical证据证明这些冷凝物油具有低成熟(1.0%附近的vitrinite反射层次)，冷凝物气体的主导的部件是干燥气体(超过94%的CH4的内容)，它思考在Lunnan区域的冷凝物水池不是热裂开的产品，但是随后的累积源于阶段分别。而且，我们在Lunnan区域的C6-C7烃上的观察是类似于有比剩余油有更高的石蜡和更低的aromaticity的冷凝物的阶段分别的效果的品质上。因此，冷凝物的二种类型被他们的阶段行为定义，它是浸透的冷凝物水池和nonsaturated水池。有一枚油戒指的浸透的冷凝物水池主要在奥陶纪水库发展了，与形成压力(FMP)和露水点压力(DPP)之间的大差别。这些冷凝物的起源是被考虑在原处，分离由过多的干燥气体的侵略被触发。在另一方面，几乎在含碳的水库存在的nonsaturated冷凝物水池是包含FMP和DPP之间的细微差别的一座烃水库，没有油戒指，并且成为蒸气的分别由于差错运动控制它的产生。

简介：Variationsinthedistributionsofcarbazolesanddibenzothiopheneswereinvestigatedinasetofsourcerocks,whichdiffermainlyintheirmaturitylevelsduringimmature-maturestages.Acomparisonofthedistributionsofcarbazolesanddibenzothiopheneshasrevealedthemainresultsasfollows:variationsintherelativeamounts①ofC0-,C1-,C2-dibenzothiophenesshowalowcorrelationwiththatofthecorrespondingcarbazoles,withtheformer'sbeingmuchhigherthanthelatter's;variationsintherelativeamountsofmethyldibe②nzothiopheneisomersalsodisplayalowcorrelationwiththatofthecorrespondingmethylcarbazoles,with4-/4-+1-methyldibenzothiopheneratiorangingfrom0.52to0.96,whilethecorrespondingcarbazoleratioof1-/1-+4-methylcarbazoleonlybeing0.71±0.05;themat③urityparameterfor4,6-/4,6-+1,4-dimethyldibenzothiohene,rangingfrom0.34to0.75,showsaremarkablelinearcorrelationwiththecorrespondingratioof1,8-/1,8-+1,4-dimethylcarbazole(R2>0.84).Theun-correlationmayindicatesomedifferentgeological-geochemicalfatesforsomeisomersofdibenzothiophenesandcarbazoles.Thehighcorrelationmayrevealastrongmaturationdependenceonthedimethylcarbazoledistributions,indicatingthatattentionshouldbepaidwhen1,8-/1,8-+1,4-dimethylcarbazoleisusedasapetroleummigrationindicator.

简介：Basedontheanalysisoftropicalcyclone(TC)databaseintheNorthwestPacific(NWP)from1945to2008,wenotonlyextractthetemporalvariationofTCintensityandfrequency,butalsogivetheirspatialdistributionbothintheNWPandintheSouthChinaSea(SCS).TheresultsshowthatthereisanobservationalincreaseofTCactivities,whichmanifestsastheenhancementofthepowerdissipationindex(PDI)andthegrowthofTCfrequency,especiallyfortyphoonsandstrongtyphoons.TheinhomogeneousspatialdistributionsofTCfrequencyandintensityarealsoprovidedbothintheNWPandintheSCS.Forexample,theregionofZhongshaIslandsandDongshaIslandsintheSCS(15°～22°N,115°～120°E),westtothePhilippineIslandsistheplacewithfrequentoccurrenceofstrongtyphoons,amongwhichthewindspeedof7TCsin64yearsexceeds60m/s.

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