简介：本文在诱生引力理论中探讨了量子虫洞和宇宙量子场论，在黑格斯场ψ的真空期待值附近，我们求解了Wheeler-DeWitt方程，得到了虫洞波函数的严格解，并且探讨了三次最子化问题，我们发现宇宙创生服务Planch分布。

简介：针对苏里格气田苏246区块储层埋藏深、普遍含水,且试气周期长的问题,提出三级气举阀与现场制氮气举相结合的气举诱喷快速试气工艺。该工艺设计可有效解决井深、气举效率低的问题;制氮机组优质、高效地完成气举排液施工,加快施工节奏,缩短施工作业周期。在简述现场制氮工艺及气举阀工作原理的基础上,分析气举阀连续气举诱喷工艺在快速试气中的应用,结果表明,该工艺能够满足苏246区块的快速排液。

简介：摘要:地下室抗浮事故容易导致地下室顶板、底板和梁柱等地下室结构构件开裂破坏，影响结构安全、工期和成本，甚至影响住宅的正常使用。地下室抗浮工程设计与施工与水文地质条件、工程地质条件、周边环境、工程特点等息息相关，抗浮方案的选择应兼顾经济性和安全性。本文从地下室抗浮设防水位的确定和抗浮措施的选择等方面提出建议。

简介：<正>所谓3S技术即GPS、GIS、RS技术。GPS(全球定位系统)是英文缩写词NAVSTAR/GPS(NAVigationSystemTimeAndRanging/GlobalPositioningSystem)的简称。全称应为“测时测距导航系统/全球定位系统”。GPS是由美国研制,并投入实际应用的最新卫星定位系统。其主要目的是为飞机和船舶导航定位。也可以用于其它多种目的。GPS技术已在航空、航天、航海、军事、地质、石油、勘探、交通、测绘等领域得到广泛的应用。美国于1993年6月26日已将GPS21颗卫星和3颗备用卫星全部发射入轨。

简介：OnJune2011,theBeijingResearchInstituteofUraniumGeology,anInstitutewithintheChinaNationalNuclearCorporation(CNNC),andtheDepartmentofGeology&MiningCNNCcarriedoutaprojectScientificDrillingforDeepMetallogenicResearchintheXiangshanLargeUraniumOreField.AyearlateronJune21,theproject,representingthefirstscientificdrillingofChina’suranium,wasofficiallylaunched,andsuccessfullycompletedonJune17,2013.A2818.88mofdrillingdepthhasbrokenthepreviousrecord1200mofexplorationdepth.TheXD-35DBdrillingmachinedevelopedbyChinaGeo-EquipmentCorporationistheChina’sfirstAC-VFDDirectDriveTopDriveCoreDrill.Ithasgreatlyimproved

简介：在研究目前油田堵水剂存在问题基础上，通过对单体结构、基团和作用机理的分析，选用了丙烯酸（AA）、丙烯酰胺（AM）、含磺酸基的单体（SAU）和交联剂N，N-亚甲基双丙烯酰胺（MBA）进行聚合，得到一种体膨型选择性颗粒堵水剂DSJ。利用实验方法，研究了影响合成堵水剂DSJ各因素，得到合成DSJ的优化方案为：单体配比n（AM）：n（AA）：n（SAU）=9：3：0．5，单体浓度25％，反应温度60℃，反应时间6h，引发剂加量0．15％，交联剂加量0．25％，中和度85％；同时对DSJ进行了性能评价。研究结果表明，DSJ具有较好的抗盐、抗钙和抗温能力，且吸油率小，具有较好的选择堵水性。图6表5参5

简介：该止水材料具有凝固时间可调、高强、抗渗、微膨胀、无毒害，流动性好等特点。适合于水文水井止水、地质灾害抢险工程。

简介：摘要：目前国内外因地下结构上浮造成建筑物破坏案例屡见不鲜，因包括水文地质情况的勘察不明、抗浮设防水位取值的不当、抗浮设计的计算错误、施工阶段或使用阶段抗浮措施的不足以及降水停止条件的不具备等诸多因素，给结构安全造成了很大的隐患。

简介：塑造耳朵的热前面(ESTF)，由黄海温暖的水流(YSWC)和山东沿海的水流(SCC)的集中形成了，在冬季是在黄海(YS)的很重要的海洋的现象。在所有表明的situ大小和分析数据集，ESTF在1950s-1990s，和一个类似的变弱趋势期间一直在变弱，这是也在YS上在冬季季风发现。数字实验证明变弱冬季季风能沿着瓷器海岸和向南方的异常水流与向北方异常的水流在多十的timescale上在YS导致异常发行量在里面中央对季节的吝啬的循环YSgenerally相反。异常发行量引起YSWC和SCC的减速，并且因此削弱ESTF。因为ESTF在地区性的海洋动力学和由空至海的相互作用起重要作用，它变弱在冬季在YS为地区性的气候有重要含意。

简介：介绍了一种抗温抗盐型钻井液降粘剂JNJ-1的合成与室内评价结果。该处理剂主要用2-丙烯酰胺-2-甲基丙磺酸（AMPS）、马莱酸酐（MA）、丙烯酸（AA）和丙烯酰胺（AM）等物质来合成。室内实验评价结果表明，该钻井液降粘剂具有很好的降粘作用，抗温、抗盐及抗高价离子污染能力强，是一种新型钻井液降粘剂。还就合成条件对该钻井液降粘剂降粘性能的影响以及合成产物的降粘能力进行了测试和评价。图8表1参4

简介：

简介：　　Introduction　　Withrapiddevelopmentandadvancementofeconomyandsociety,lotsofcitygroupsorcitybeltswithex-tra-largecitiesastheircentershavebeenformedinChina.Theregionsthesecitygroupslieinusuallyhavewell-developedeconomy,densepopulation,andareregionalpoliticsandculturecenters.Somegroupslieintheregionswithhighlevelofearthquakeactivity,suchastheSurroundingCapitalCityGroupwiththecentersofBei-jingandTianjin.Oncealargeearthquakeoccurs,itsinfluencewillspreadtoveryextensiveregionanditsdisasterwillbetremendoustoo.Soearthquakeresistanceanddisastermitigationofcitygroupwillbeverysignificantissue.Thecitiesinagrouphaveclosedistancewitheachother;theycancarryoutunifiedpreparationfordisasterasonewholeandreducetheheavyloadofsinglecitybeforeanearthquake,andhaveanadvantageofpromptmutual-aidafteranearthquakebecauseofclosedistance.Itisespeciallysignificanttomitigatetheloseoflives.Oneimportantpreconditionisthatallthecitiesinonegroupcannotbeexposedtothesamelevelofdestroyduringoneearth-quake.Sothedivisionofcitygroupintheregionwithdensecitiesdistributionshallbeverysignificanttotheemergentmutual-aidinearlytimeafteralargeearthquake.Forthisgoal,thecharacteristicsandcorrelativityofearthquake′simpactoncitiesinonegroupneedtoclearlybeconsidered.Thecitieswithsimilarfeaturesandstrongcorrelativityofhistoricalearthquakeinfluencehavelargechancetosuffersameleveldestroyduringthefuturestrongearthquakeandaredisadvantagetoprovidemutual-aidandshallnotbedividedintoonegroup.　　……

简介：TheemergenceofZhangHeng’sseismoscopehasaprofoundhistoricalbackground.ThispaperintendstoexploretheformationandmaterialbasisofZhangHeng’sscientificthought.Itappearsthatthesimpleintentionof"observingvisionsanddistinguishinggoodfortuneormisfortune"washismotivationtodeveloptheseismoscope.Tracingitshistoricalbackground,theauthorsproposedinthispaperthatthedevelopmentofthisseismoscopestartedaround128A.D.,andbasedonperceptualknowledge,twoideasaboutearthquakescameintobeing,i.e.,earthquakelocationcouldbejudgedaccordingtotheinstrumentshakingdirection,andtheearthquakeandearthsplitwereessentiallydifferent.Intheinstrumentmanufacture,ZhangHengadvocatedaprincipleof"makingutensilstoimitatecosmos".Bythisprinciple,thefollowingthreeproblemswerereadilysolved:theseismoscopeimitatedtheresponseofthesuspensionsystemtoearthquakes(i.e.naturalseismoscope).Technically,thetriggermechanismofthelatchwasusedforreference,anditrecordedthephysicalevidenceofearthquakeoccurrencebyaningeniouswayofaballdroppingfromadragon’smouth.Thesolutionofthesethreekeyproblemsleadtotheemergenceoftheseismoscopein132A.D.andthesuccessfuldetectionofanearthquakein134A.D.Hisinventiondeepenedhumanity’sknowledgeofnaturallaws,andpromotedthedevelopmentofscienceandtechnologyinthattimeandlater.

简介：Long-termintegrationsareconductedusingtheSpectralAtmosphericModel(referredtoasSAMIL),whichwasdevelopedintheLaboratoryforNumericalModelingforAtmosphericSciencesandGeophysicalFluidDynamics(LASG)intheInstituteofAtmosphericPhysics(IAP),withdifferentresolutionstoinves-tigatesensitivityoftheMadden-JulianOscillation(MJO)simulationstothemodel'sresolution(horizontalandvertical).Threeresolutionsofthemodel,R15L9,R42L9andR42L26,withidenticalphysicalprocesses,allproducedthebasicobservedfeaturesoftheMJO,includingthespatiotemporalspace-timespectraandeastwardpropagation.Nofundamentaldifferencesamongthesesimulationswerefound.ThisindicatesthatthemodelresolutionisnotadeterminingfactorforsimulatingtheMJO.Detaileddifferencesamongthesemodelingresultssuggest,however,thatmodelresolutioncansubstantiallyaffectthesimulatedMJOincertainaspects.Forinstance,atalowerhorizontalresolution,highfrequencydisturbanceswereweakerandthestructuresofthesimulatedMJOwerebetterdefinedtoacertainextent.AhigherverticalresolutionledtoamorerealisticspatiotemporalspectrumandspatialdistributionofMJOprecipitation.Meanwhile,increasingthemodel'sresolutionimprovedsimulationoftheclimatology.However,increasingtheresolutionshouldbebasedonimprovingthecumulusparameterizationscheme.

简介：In2004,China’sdigitalseismicobservationnetworkprojectbegantodeploy40setsYRY-4four-componentboreholestrainmetersinordertomonitorearthquakepreparationprocess.Thepaperdescribesobservedsolidtidalstraindiscretenessandtidalfactoranisotropy,analyzesthereliabilityofobservationaldataanddiscussesthecauseforthisphenomenon.Aftergettingridofinterferences,thenetwork,intwoyearspractice,hasobservedseveralpre-seismicstrainanomaliesatstationsclosetoepicentersespeciallyintheWenchuanMS8.0megaquake.Itshowsthatthisboreholestrainmeternetworkiscapableofmonitoringseismogenicprocess.

简介：河的健康生活是对他们的生活条件的描述，并且它也与人的社会是对河的功能和关系的一个全面评价。Throughanalyzing人和河生态系统，连续流动，为水的安全的河隧道和沉积交通，好水质，持续的河生态系统和给水能力的要求被认为是健康黄河的符号。最小量，最大的洪水排出能力，满满的分泌物，泛滥平原的横向的斜坡，水质度，沼泽地区域，水的生态系统，和给水能力，总共八量的指示物被放作为健康黄河的符号，并且他们的相应标准redetermined基于有历史的水文学数据和1956-2004的观察数据的分析。

简介：ThestudiesonthestructureandphysicalpropertiesoftheEarth'sinteriordonebyChinesegeophysicistsfrom1999to2002werereviewedinthispaper.Itincludesseveralresearchareas:thestructureoftheEarth'sinteriorsusingseismictomography,anisotropyoftheuppermantleinChinaanditsadjacentareas,qualityfactorQβforSwaves,subductionzone,mantlediscontinuities,physicalpropertiesofEarth'smaterialsandothers.Thereviewconcernsmainlythecontents,themethodsandtheresultsofthestudies.ItcanbeseenthatnewprogressinthestudyonthestructureandphysicalpropertiesoftheEarth'sinteriorhasbeenmadeinthelast4yearsinChina.Itisshownonthreeaspects:advancementmadeonsomepreexistentareas;pioneeringonsomenewfieldsandnewmethodsadopted.

简介：地理要素的分类编码是人类认知地理信息世界的成果,也是人类对地理信息世界再认知的人口和关键.在海洋地理信息领域,S-101数据标准即将替代现行S-57ENC标准,分类编码方案也将会相应改变.先对S-57到S-101的属性变化内容进行整体描述,再从地理要素属性、元要素属性、图示表达属性三方面内容,对新旧两套分类编码中的属性内容进行对比分析,为涉海人员消化吸收新标准提供一定的参考.

简介：Inordertotheoreticallystudythebucklepropagationofsubseapipelineswithslip-onbucklearrestors,atwo-dimensionalringmodelwassetuptorepresentthepipelineandanonlinearspringmodelwasadoptedtosimulatethecontactbetweenpipeline’sinnerwallsandbetweenpipeline’souterwallandslip-onbucklearrestor’sinnerwallduringbucklepropagation.Inaddition,somereversespringsareaddedtopreventthewallofleftandrightsidesseparatingfromtheinnerwallofslip-onbucklearrestors.Consideringlargedeformationkinematicsrelationsandtheelastic-plasticconstitutiverelationofmaterial,balanceequationswereestablishedwiththeprincipleofvirtualwork.Thevariationofexternalpressurewithrespecttothecross-sectionalareaofpipelineswasanalyzed,andthelowerboundofthecrossoverpressureofslip-onbucklearrestorswascalculatedbasedonMaxwell’senergybalancemethod.Bycomparingthetheoreticalresultswithexperimentandfiniteelementnumericalsimulation,thetheoreticalmethodisprovedtobecorrectandreliable.

简介：摘要:高层建筑地下室水位较高，裙房及纯地下室部分抗浮水位存在不足。设计和施工时主动参与抗浮、抗渗，或后期被动抗浮，两者对比进行造价和工程量分析。