简介：你听说过天下有这样的人吗？替别人做好事，人家给钱不要，而要抽打一百鞭子作为奖赏，这是怎么回事呢？

简介：1．hundredn．百hundredsof数以百计的thousandn.千thousandsof成千上万的millionn．百万millionsof成百万的.

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简介：AbstractObjectives:To demonstrate three-hundred and sixty degrees of maxillary sinus (MS) surgical approaches using cadaveric dissections, highlighting the step-by-step anatomy of each procedure.Methods:Two latex-injected cadaveric specimens were utilized to perform surgical dissections to demonstrate different approaches to the MS. The procedures were documented with macroscopic images and endoscopic pictures.Results:Dissections were performed to approach the MS medially (endoscopic maxillary antrostomy and ethmoidectomy), anteriorly (Caldwell-Luc), superiorly (transconjunctival/transorbital approach), inferiorly (transpalatal approach), and posterolaterally (preauricular hemicoronal approach).Conclusion:A number of approaches have been described to address pathology in the MS. Surgeons should be familiar with indications, limitations, and surgical anatomy from different perspectives to approach the MS. This paper illustrates anatomic approaches to the MS with detailed step-by-step cadaveric dissections and case examples.

简介：Thestate-ownedQunfengMachineryWorksisaspecializedfactoryundertheMinistryofAviationandSpaceIndustrymanufacturinglinemantools.Takingfulladvantagesofthesuperiorityoftechnicalforcesandfacilitiesexistedinthisindustry,overonehunderdkindsoflinemantoolsincludinghot-linetoolsmadeofhighstrengthaluminumalloyforhighvoltagetransmissionlinesupto500kVhavebeenmanufacturedsince1979.Someofthefoolswillbeintroducedinsuccessiveisuesinthis

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简介：ＡＳＴＵＤＹＯＮＴＨＥＶＡＲＩＡＴＩＯＮＳＯＦＡＮＮＵＡＬＦＲＥＱＵＥＮＣＹＦＯＲＴＲＯＰＩＣＡＬＣＹＣＬＯＮＥＩＮＮＯＲＴＨＷＥＳＴＰＡＣＩＦＩＣＤＵＲＩＮＧＴＨＥＬＡＳＴＨＵＮＤＲＥＤＹＥＡＲＳ￥ＺｈａｎｇＧｕａｎｇｚｈｉ，ＺｈａｎｇＸｉａｎｇｏ...

简介：A100-J-levelNd:glasslasersysteminnanosecond-scalepulsewidthhasbeenconstructedtoperformasastandardsourceofhigh-fluence-laserscienceexperiments.Thelasersystem,operatingwithtypicalpulsedurationsof3–5nsandbeamdiameter60mm,employsasequenceofsuccessiverodamplifierstoachieve100-J-levelenergyat1053nmat3ns.Thefrequencyconversioncanprovideenergyof50-Jlevelat351nm.Inadditiontothehighstabilityoftheenergyoutput,themostvaluableofthelasersystemisthehighspatiotemporalbeamqualityoftheoutput,whichcontainstheuniformsquarepulsewaveform,theuniformflat-topspatialfluencedistributionandtheuniformflat-topwavefront.

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简介：Mangrovesaccumulatesedimentarysequences,wherecorescanprovidehistoricalrecordsofmangroveevolutionwithpastclimatechangeandhumanactivity.ThestudytracedthehistoryofmangroveevolutionduringthepastonehundredyearsinamangroveswampofMaoweiSea,SWChina.Thesedimentationrates(0.38-0.95cmyr-1)werecalculatedonthebasisofln(210Pbxs/Al)andmassdepthinthecoresediments.Chemicaltracers,suchasδ13CorgandC:Nvalues,wereutilizedtotracethecontributionofmangrove-derivedorganicmatterusingaternarymixingmodel.Becauseofpotentialdiageneticalterationand/oroverlapintheisotopicsignaturesofdifferentcomponents,simultaneoususeofmangrovepollendiagramscanhelptosupplementsomeoftheselimitations.Combinedwithmangrovepollen,mangroveevolutionwasreconstructedandcouldbedividedintothreestages:flourishment（1886-1905AD）,slightdegradation（1905-1949AD）andrapiddegradationperiod（1949-2007AD）,whichwasconsistentwithpreviousreports.Thereclamationofmangroveswampstoshrimppondswasthemajorreasonforrapiddegradationofmangroveecosystemsinrecentyears,ratherthanclimatechangeintheregion.

简介：The2ndAnnualSessionofEnergyandInformationCommittee,CSEE,chairedbyMr.SunJiapingwasheldinBeijingonDec.17-20,1991.ViceMinisterShiDazhen,ChiefEngineerMr.LuYanchangoftheMinistryofEnergy,GeneralSecretaryMr.DuXingyouofCSEEandsomeotherleadingstaffattendedthemeeting.ViceMinisterShiDazhenexpressedsincerehopeinhisaddresstothesessionthatscien-tificandtechnicalstaffinenergyfieldshouldlaunchmacropolicystudymorewidelyanddeeplyundertheguidelineofso-