简介：AbstractPurpose:To evaluate the outcomes with and without aid of a computer-assisted surgical navigation system (CASNS) for treatment of unilateral orbital wall fracture (OWF).Methods:Patients who came to our hospital for repairing unilateral traumatic OWF from 2014 to 2017 were included in this study. The patients were divided into the navigation group who accepted orbital wall reconstruction aided by CASNS and the conventional group. We evaluated the surgical precision in the navigation group by analyzing the difference between actual postoperative computed tomography data and preoperative virtual surgical plan through color order ratios. We also compared the duration of surgery, enophthalmos correction, restoration of orbital volumes, and improvement of clinical symptoms in both groups systemically. Quantitative data were presented as mean ± SD. Significance was determined by the two-sample t-test using SPSS Version 19.0 A p < 0.05 was considered statistically significant.Results:Seventy patients with unilateral OWF were included in the study cohort. The mean difference between preoperative virtual planning and actual reconstruction outcome was (0.869 ± 0.472) mm, which means the reconstruction result could match the navigation planning accurately. The mean duration of surgery in the navigation group was shorter than it is in the control group, but not significantly. Discrepancies between the reconstructed and unaffected orbital-cavity volume and eyeball projection in the navigation group were significantly less than that in the conventional group. One patient had remnant diplopia and two patients had enophthalmos after surgery in the navigation group; two patients had postoperative diplopia and four patients had postoperative enophthalmos in the conventional group.Conclusion:Compare with the conventional treatment for OWF, the use of CASNS can provide a significantly better surgical precision, greater improvements in orbital-cavity volume and eyeball projection, and better clinical results, without increasing the duration of surgery.

简介：BackgroundPatientswithunstableanginapectorisanddiabetesmellitusareverycommon.Whentheyreceiveinterventionaltherapy,contrastagentscancauserenalinjuryandplateletactivation.Alprostadilhasbeenshowntodecreaseinflammationandmicrovascularresistance.Thereisnoanyreportontheprotectioneffectsofalprostadilonrenalinjuryandtheplateletactivationduringcardiacinterventionaltherapy.MethodsAtotalof57patientsweredividedintotwogroups,alprostadilgroup(n=35)andnormalgroupn=22).BUN(bloodureanitrogen)andSCr(serumcreatine)weremeasuredastherenalfunctionparameters.GFR(glomerularfiltrationrate)wascalculatedbytheMDRDformula.Plateletparameters:PLT(plateletcount,109),PDW(plateletdistributionwidth,fL),MPV(meanplateletvolume,fL),PLCR(largeplateletscaleratio,%)weremeasuredastheplateletactivationindex.TtestandChi-squaretestwereusedasstatisticalmethods,andP<0.05wasconsideredstatisticallysignificant.ResultsInthealprostadilgroup,SCrwas71.1±13.8μmol/Land65.9±12.6μmol/L,beforeandafterinterventionaltherapy(P<0.05).BUNwas5.68±1.79mmol/Land3.86±1.19mmol/L(P<0.001),beforeandafterinterventionaltherapy.Intheplatelettests,MPVwasseemedtobetheonlyusefulplateletparameter,beforeandafterinterventionaltherapy(11.8±1.8fLand11.1±1.2fL,P<0.05),whilethePLT(109/L),PDW(fl),PLCR(%)didn'tshowanysignificantdifference.Inthenormalgroup,allthesetests'resultsdidn'tsignificantlychangeafterinterventionaltherapy.ConclusionsThepatientswiththeunstableanginapectorisanddiabetesmellitushaveontheriskofrenalfunctiondamageandplateletactivationwhenundertakingcardiacinterventionaltherapy.Alprostadilprotectsrenalfunctionandalleviatesplateletactivation.

简介：来自爱尔兰的演唱组合“西城男孩”自出道以来就受到歌迷们的青睐，是当今最具人气的组合之一。他们从1998年的“SmashHitsAwards”最佳新人奖得主，到“Mylove”“FlyingWithourWings”,“IfILetYouGo”等佳作的流传，现在已成为红遍全球的流行乐坛巨星。

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简介：<正>《没有法律的秩序》是耶鲁大学法学院教授Robertc.Euickson综合运用法律社会学和法律经济学对非正式规范进行研究的新著。作者此前一直致力于法律经济学的研究,并秉承该学派传统。对国家正式法律制度及其功能和效果进行分析、评价和预测,以图改革法律制度,促进效益最大化。科斯在《社会成本问题》一文中提出的有关侵权法和整个法律制度内在经济逻辑的观点,被人们称为科斯定理,成为法律经济学的理论基础。该定理认为,在交易费

简介：Ｔｅａｃｈｉｎｇａｎａｌｙｓｉｓｗｉｔｈｏｕｔεσ￥ＬｅｅＰｅｎｇＹｅｅ（ＮａｔｉｏｎａｌＵｎｉｖｅｒｓｉｔｙｏｆＳｉｎｇａｐｏｒｅ）１．ＩｎｔｒｏｄｕｃｔｉｏｎＡｎａｌｙｓｉｓｉｓｖｅｒｙｏｆｔｅｎｒｅｇａｒｄｅｄａｓａｄｉｆｆｉｃｕｌｔｓｕｂｊｅ...

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简介：本期“作文点评”栏目继续为大家点评在2008年全国中学生英语作文大赛中获得一等奖的优秀作文。本文小作者针对2008年全国中学生英语作文大赛备选题目（一）的所给材料发表了自己的见解和意见，呼吁大家加强环保意识。一起来看看小作者是如何行文及一线教师的点评吧!“

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简介：在年初的卡塔尔车展当中，大众除了展出一些刻意针对当地消费习惯的概念车之外．还推出了这部名为XLI的节能概念车，虽然在全世界石油最不匮乏的地区发表节能概念车有些奇怪，但这部车确实达成了当年度耶博士所发下的豪语——推出每行驶100公里只需1升汽油天使般的车辆。

简介：Inthispaper,wegiveaconvergencetheoremanderrorestimatesforaniterationmethodundernewKantorovitch-Ostrowskitypeconditionusingtheinformationofhigherderivativesatinitialpoints.Comparedwiththecorrespondingstudyin[3],theconvergencedeterminationisestablishedunderoneglobalcondition,insteadoftwo,onthefunction.

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简介：Ageo-referenceisaglobalorregionalgeographicalorgeodeticcoor-dinatesystemtowhichsensorsorspatialobjectdataarerelated.Hence,geo-ref-erencingisclosetothewellknownphotogrammetricconceptofexteriororabso-luteorientation,thecommonexecutionofwhichisindirect,viatheuseofgroundcontrolpoint.GPSandINStechnologieshavechangedthesituation,permittingdirectmeasurementofpositionandattitudeparametersandmakingexteriororien-tationfeasiblewithoutgroundcontrolatall,inprinciple.Theanalysisofaccuracyandreliabilityperformancediscloses,however,thatespeciallyINSdoesnotyetmeetthehighdemandsofphotogrammetry.Moreover,controlofsystematicer-rors,theproblemofdatumtransformation,andreliabilityconditionsmaketheuseofsomegroundcontrolpointsstillmandatory,atleastforanyhighperfor-mancegeo-referencing.

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简介：KellyClarkson的第四张专辑AllIEverWanted一经推出，首支单曲MyLifeWouldSuckWithoutYou在Hot100单曲榜中就成功蝉联冠军。

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