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128 个结果
  • 简介:Atpresent,thereexisttwomethodsusedtorecoverthebathymetryfromaltimeterdata,i.e.thedeterministicmethodandthestochasticmethod.Inthispaper,theprinciplesofthetwomethodsareintroducedfirst.Thenaccordingtothetheoryofleast-squarecollocation,amodifiedstatisticalmodelforrecoveringbathymetryfromaltimeterdataisproposed.ThenewmodelhasbeenusedforcomputingtheoceandepthintheSouthChinaSeafromaltimeter-derivedgravityanomalies.Finallythepredicteddepthsarecomparedwiththeship-bornedepth.Itshowsthattheyagreewitheachotherverywell.

  • 标签: 高度测量 海洋测深 高度数据 中国南海 海洋深度 修正统计模型
  • 简介:TherecoveryofGefromlignitebymicroorganismincludestwostages:(1)thebreaking-downofGecomplexofhumusinligniteintosimplecompoundsassistedbymicroorganism;(2)thedesorptionofGecompoundsfromthelignite.TherecoveryrateofGehasbeenenhancedby14%sincethediscoveryofadsorptionanddesorptionofGefromcoal.TheeffectsofpH,leachingagents,andcoalsizeontherecoveryofGewereexperimentallyinvestigated,andtheoptimizedprocessparameterswereobtained.ThereactionheatofGeadsorptionanddesorptioninlignitewasdetermined.Itisabout23-53kJ/mol,whichrevealsthattheadsorptionbelongstophysicalprocess.TherecoveryrateofGefromlignitewithdirectmicroorganismleachingcanreachabout85%,whichishigherthanthatof60%reportedelsewhere.ApotentialprocessforleachingGeinlignitewassuggested.

  • 标签: 褐煤 微生物 锗回收
  • 简介:Inthispaper,aframeworkispresentedforaddingageneralcommandrecoveryfacilitytouserinterface.Asimplemodelofinteractivesystemisdiscussedandfourmetacommands.UNDO,REDO.SKIPBACK,andSKIPFORWARD,aredefined.Thedouble-linkedlistisusedtoorganizetherecoveryinformationinanaturalwayforeasyimplementation.Applicationsoftheframeworktovariousdemandsofcommandrecoveriesshowthattheuseoftheframeworkisveryeasyandconvenient.

  • 标签: CAD 用户接口 命令恢复结构 计算机辅助分析
  • 简介:Strokeisaleadingcauseoflong-termdisability.Moststrokepatientsregaintheirfunctionpartiallyorfullyduringthefirst3–6monthsdependingonlocationandsizeofthelesion.Duringthisfunctionalrecoveryphase,corticalreorganizationorplasticityoccurs,andphysiologicalresponsivenessorneuronalexcitabilityisalteredintheipsilesionalandcontralesionalareas.However,howtodrivesuccessfulplasticchangesorsuccessfulstrokerecoveryarenotfullyelucidatedyet.

  • 标签: 可塑性 中风 GABA 康复 恢复阶段 生理反应
  • 简介:AbstractBackground:Patients’ recovery after surgery is the major concern for all perioperative clinicians. This study aims to minimize the side effects of peri-operative surgical stress and accelerate patients’ recovery of gastrointestinal (GI) function and quality of life after colorectal surgeries, an enhanced recovery protocol based on pre-operative rehabilitation was implemented and its effect was explored.Methods:A prospective randomized controlled clinical trial was conducted, patients were recruited from January 2018 to September 2019 in this study. Patients scheduled for elective colorectal surgeries were randomly allocated to receive either standardized enhanced recovery after surgery (S-ERAS) group or enhanced recovery after surgery based on pre-operative rehabilitation (group PR-ERAS). In the group PR-ERAS, on top of recommended peri-operative strategies for enhanced recovery, formatted rehabilitation exercises pre-operatively were carried out. The primary outcome was the quality of GI recovery measured with I-FEED scoring. Secondary outcomes were quality of life scores and strength of handgrip; the incidence of adverse events till 30 days post-operatively was also analyzed.Results:A total of 240 patients were scrutinized and 213 eligible patients were enrolled, who were randomly allocated to the group S-ERAS (n = 104) and group PR-ERAS (n = 109). The percentage of normal recovery graded by I-FEED scoring was higher in group PR-ERAS (79.0% vs. 64.3%, P < 0.050). The subscores of life ability and physical well-being at post-operative 72 h were significantly improved in the group PR-ERAS using quality of recovery score (QOR-40) questionnaire (P < 0.050). The strength of hand grip post-operatively was also improved in the group PR-ERAS (P < 0.050). The incidence of bowel-related and other adverse events was similar in both groups till 30 days post-operatively (P > 0.050).Conclusions:Peri-operative rehabilitation exercise might be another benevolent factor for early recovery of GI function and life of quality after colorectal surgery. Newer, more surgery-specific rehabilitation recovery protocol merits further exploration for these patients.Trial Registration:ChiCTR.org.cn, ChiCTR-ONRC-14005096

  • 标签: Enhanced recovery after surgery Gastrointestinal function Peri-operatively Rehabilitation
  • 简介:Amovingboundarymodelunderconsideringthevolumechangeofsphericalresinbeadsduringionexchangeprocesseswasemployedtorecognizethemechanismsofreecoveringuraniumfromcarbonatesolutionsusingstronglybasicanionexchanger.Twoimportantfactors,swellingandionexchange,whichdirectlyaffecttheviolumeofionexchangersweretakenintoaccount.AnionexchangemechanismhasbeenfoundfortheforwardreactionPCl/[UO2(CO3)3]^4-,andisparticaldiffusiongoverningathighconcentrationofthecomplexanion.ThemechanismofRCl/U(VI)atpH5.5-7.5isachemicalreactiontakingplaceatthemovingboundaryoftheunreactednucleus.ForthereversereactionRnU/NaCl,theuranyltricarbonatecomplexanionintheresinphaseisreplacedbyCl^-ionswithanionexchangemechanismalwaydeterminedbyparticlediffusion.TheotherformsofuraniuminthesolidphaseloadedontheresinatpH5.5-7.5shouldbelongtonon-exchangeableuranium.ThemechanismofthereversereactionRnU/HClisalwayschemicalreactionwhichisnotrestrictedtothemovingboundaryoftheunreactedcore.

  • 标签: 碳酸盐溶液 回收处理机制
  • 简介:Westartfromarealistichalfspacemodelforthermalimaging,whichwethenusetodevelopamathematicalasymptoticanalysiswellsuitedforthedesignofreconstructionalgorithms.Weseektoreconstructthermalanomaliesonlythroughtheirroughfeatures.Withthiswayourproposedalgorithmsarestableagainstmeasurementnoiseandgeometryperturbations.Basedonrigorousasymptoticestimates,wefirstobtainanapproximationforthetemperatureprofilewhichwethenusetodesignnoniterativedetectionalgorithms.Weshowonnumericalsimulationsevidencethattheyareaccurateandrobust.Moreover,weprovideamathematicalmodelforultrasonictemperatureimaging,whichisanimportanttechniqueincanceroustissueablationtherapy.

  • 标签: 热异常 渐近公式 数学模型 重建算法 温度分布 测量噪声
  • 简介:Itisknownfromclassicaldifferentialgeometrythatonecanreconstructacurvewith(n-1)prescribedcurvaturefunctions,ifthesefunctionscanbedifferentiatedacertainnumberoftimesintheusualsenseandifthefirst(n-2)functionsarestrictlypositive.ItisestablishedherethatthisresultstillholdsundertheassumptionthatthecurvaturefunctionsbelongtosomeSobolevspaces,byusingthenotionofderivativeinthedistributionalsense.ItisalsoshownthatthemappingwhichassociateswithsuchprescribedcurvaturefunctionsthereconstructedcurveisofclassC∞.

  • 标签: 微分几何 非线性弹性 欧几里德空间 曲线 弱导出 Frenet方程
  • 简介:Inthispaper,theunderwatervehicle,slingandthemothershipareconsideredasasinglede-greeoffreedomsystemconnectedbyaspring.Throughtheanalysisofthissystem,aphysicalmodelises-tablished,whichdescribesthemotionofthevehiclecausedbytheshipmotionandwavemotion.Furthermore,amathematicalmodelbasedonthisphysicalmodelisobtained,andanumericalsolutionprogramismade.Asanexample,apracticallaunchandrecoverysystemforanunderwaterrobotiscalcu-latedbyuseoftheprogram.andthemotiontrackoftherobotisobtained.

  • 标签: UNDERWATER VEHICLE LAUNCH RECOVERY MOTION response
  • 简介:Apracticalandeconmicalprocessforeffectivelyrecoveringuraniumfromcarbonatesolutionsispresented.TheuraniumcomplexesaremadeunstablebyadjustingthepHofmixedsolutionsofNa2CO3andNaHCO3toabout7-8byHCland/orNaOH.WithinthisrangeofpHvalue,thesuper-equivalentuptakeofuraniumcomparedwithexchangeofCl^-andUO2(CO3)3^4-canbeworkedout,thetotalfreeeenergychangetakesontheminimumvalue,thepredominantspeciesofuraniuminresinphasemaybeU2O7^2-exceptforalittleamountofUO2^2+.

  • 标签: 碳酸盐溶液 优化回收
  • 简介:木头数据的遥远的传播是为服务公司的一个迫切问题。这里的日志数据的遥远的传播技术多好与CifNet在联合指传播解决方案自动化减少回转时间的日志数据的传播,存储,管理,和检索的数据管理系统。实现断点传播和错误恢复并且保证木头数据传播的有效性和可靠性是一种应用数字签名技术。

  • 标签: 测井数据 错误恢复 远程无线传输技术 数据传输
  • 简介:稀土元素金属(雷姆)是在高技术,发电,通讯,和防卫工业有普遍、唯一的应用的一系列17个元素。这些资源对突现的持续精力和碳选择技术也枢轴。雷姆的恢复由于它与各种各样的工业应用一起的高市场价格有趣。常规技术,viz。降水,过滤,液体液体抽取,稳固液体的抽取,离子交换,超级批评抽取,电迷,电精制,精制的electroslag,等等,为雷姆的恢复被开发了,不是经济地吸引人的。Biosorption从水的答案为稀土元素金属的恢复代表biotechnological革新以及一个合算的优秀工具。许多biomaterials象水藻那样,真菌,细菌,树脂,激活的碳,等等,被报导了为雷姆的恢复用作潜在的吸附物。影响稀土元素金属并且等温线建模的举起的金属绑定机制,以及参数这里被介绍。这篇文章提供过去的成就和用答应biosorbents能为恢复雷姆用作一个节俭的工具的一些执行的biosorption研究的当前的情形的概述。不同工人报导的试验性的调查结果将提供卓见进这研究边疆。

  • 标签: 稀土金属 吸附回收 生物吸附剂 REMS 技术创新 工业应用