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简介：1TechnologyofnaturalmaterialsEarlymanusedconvenientlyshapedstonesastools."Workshop"areashavebeenfoundwithlargenumbersofstones,someshowingsignsofbeingworked[1].However,organicmaterialslikewoodwilldecayundernormalwetconditionsinthepresenceofoxygen,sowewon'tfindthesamesortofevidenceforwoodentools.Itissafetoassumethatearlymanusedsticksasprobesandclubs,andmaybeevenformakingsomesortofnestlikeprotectionagainsttheelementsandpredators,sinceweseechimpanzeesandotheranimalsdoingthissortofthing.Sowood,andalmostcertainlyotherplantmaterialssuchasfibrousleaves,andboneandothermaterialsgleanedfromdeadanimals,wouldbeusedfromtheearliesttimes.WeneedtoknowthisinordertoestablishtheideathatMancanbeexpectedtohavealonghistoryoftheuseandmanipulationofnaturalmaterials.Thisneedsskillsinchoosingmaterialsforcertainusesonthebasisoftheirmechanicalproperties,whetherthosepropertiesaretodowiththeeaseofshapingthematerialortheeffectivenessofthatmaterialinuse.Occasionallythematerialwaschosensimplybecauseitwasreadilyavailable.Ifwefindthataparticularmaterialwasalwaysusedforacertainjob,it'sreasonabletodeducethatManwasexertingmaterialsselectioncriteriathroughexperience.

简介：SincethegradualdeclassificationofChina’sdiplomaticarchivesbeginninginJanuary2004,agreatnumberofconfidentialhistoricalarchiveshavebeenunveiledtothepublic,providingexpertsandscholarswithfirst-handinformationofgreatvalue,thusfacilitatingthedeepeningofinternationalstudiesonasolidbase.Forthebenefitofourreaders,ChinaInternationalStudieswillprintonaselectivebasisvaluabledeclassifiedarchivesatirregularintervals.

简介：一、INTRODUCTION选文简介《最后关头》（AttheLastMoment）选自美国非裔作家沃尔特·迪安·迈尔斯（WalierDeanMyers）的小说《灌篮王》（Slam）。

简介：CONTENTSA:Physicsofmetalandmetallography(36-46)B:Testingandanalysis(7)C:Mechanical,physicalandchemicalproperties(58-74)D:Metallurgy(46-61)E:Metalworking(31-50)90A0036PlasticDeformationandDislocationStructureInγ′-phaseofaDirectionallySolidifiedNi-baseSuperalloyThedislocationsubstructureofdirectionallysolidifiedRene80

简介：Anincubationexperimentwascarriedoutinlaboratorytostudytheeffectoftemperature,moisture,phosphorus,organicmatter,croppingandpreviouselementalsulfurapplicationonelementalsulfuroxidationinfourselectedsoils,fluvo-aquicsoil,blacksoil,yellow-brownsoilandredsoil,Inallthesoilstested,sulfuroxidationratewasinfluencedbytemperatureandthetemperaturecoefficient(Q10)valuesattherangefrom10to30℃were4.41,,6.19and3.71forthefoursoils,respectively.Therateofsulfuroxidationwasparabolicallyrelatedtosoilwatercontent.Theoptimummoisturecontentforthemaximumoxiationratewasdifferentamongsoils,Phosphorusincreasedtheoxidationrateofelementalsulfurby57.7%,33.1%,21.7%and26.4%fortheabovefoursoils,respectively,comparedwiththecontrol(nophosphorusapplied).Organicmaterialofcornstrawwhichwasgoundandpassedthrougha0.5-mmsievealsoincreasedthoxidationrateofelementalsulfurinthefoursoilsby59.8%,7.8%,39.2%and540.4%,respectively.Elementalsulfurwhichwasappliedpreviouslytosoilssignificantlyenhancedtheoxidationofelementalsulfursubsequentlyaddedandincreasedsulfur-oxidizingpopulationssuchasautotrophicelementalsulfuroxidizerswithpHoptimum6.8,autotrophicthiosufateoxidizerswithpHoptimum6.8,heterotrophicthiosulfateoxidizersandheterotrophicsulfateproducers.Croppinghadlittleeffectonelementalsulfur-oxidizingpotentialityofsoils.

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简介：OnJanuary7,2014,theStateCouncilInformationOfficeheldapressconference,atwhich,MaoQun’an,newsspokesmananddirectorofDepartmentofPublicityofNationalHealthandFamilyPlanningCommission(NHFPC)announcedtheTopTenNewsforChina’sHealthandFamilyPlanningin2013selectedbyNHFPC.

简介：A:Physicsofmetalandmetallography(68-78)B:Testingandanalysis(27-28)C:Mechanical,physicalandchemicalproperties(64-78)D:Metallurgy(111-141)E:Metalworking(50-59)89A0068ObservationofEpitaxialOverlayerofMetalsatAtomicLevelEpitaxialoverlayerofmetalsatatomiclevelhasbeensuccessfully

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简介：Thisspecialissuecontainsselectedpapersfromthe2016NationalConferenceonHighVoltageandDischargePlasmas(HVDP),whichwashostedbythePlasmasandtheirApplicationsCommittee,ChinaElectrotechnicalSociety,andheldinBeijing,China,on26and27November2016.Theconferencewasattendedbyover430delegatesfrom110universities,researchinstitutesandenterprises.Intotal,280abstractsand132fullpapershavebeensubmitted,givingawonderfulassemblyoftechnicalcontributionsfromaroundChina.

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简介：ＳＥＬＥＣＴＥＤＡＢＳＴＲＡＣＴＳＯＦＡＲＴＩＣＬＥＳＯＮＲＡＲＥＭＥＴＡＬＳＦＲＯＭＣＨＩＮＥＳＥＰＥＲＩＯＤＩＣＡＬＳＣＯＮＴＥＮＴＳ１ＥｘｔｒａｃｔｉｖｅＭｅｔａｌｕｒｇｙ（１）２ＭｅｔａｌＭａｔｅｒｉａｌｓａｎｄＴｅｃｈｎｏｌｏｇｙ（１～...

简介：891-24Sulfur-ResistantTitaniumOxideBasedCatalystsforDeepOxidationThepoisonouseffectofSO2onTi-Cu.Ti-MnoxidescatalystsforthedeepoxidationoftoluenewasinvestigatedbymeansofinfraredspectroscopyandX-rayphotoelectronspectroscopy.ItwasfoundthatthepoisoningofthecatalystatlowertemperaturewascausedbytheSO2adsorption,andtheactivityofthepoisonedcatalystcouldberegenerated.ThekineticsofthedeepoxidationoftolueneoverTi-Cuoxidecatalystbefore

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简介：在与对脉管的损伤的照顾和治疗感兴趣的从在整个世界的同事一起的知识的国际交换的精神，我们在脉管的损伤上从西方的世界提供选择历史的思考。而有很多个关键个人和许多事件，在我们的写对我们重要，我们不实质上对被另外的文化并且，特别地写汉语的知道任何东西。中国外科医生在第一之中在切断的极限的重新种植园高度成功，这很好在全世界被认出，修理受伤动脉和静脉。另外，我们认识到在世界的另外的部分有贡献，它不一起对我们众所周知。从说的阿拉伯语的贡献世界分开因为有周期的简短参考，出现在脑海。我们提供我们希望将有至少一位中国外科医生，将为我们提供在对在西方的世界外面设法脉管的损伤的重要历史的贡献上分享他们的观点的利益的观点，并且，特别地，英语说文学。再次，我们用说的阿拉伯语鼓励我们的同事向我们提供他们发展的观点和脉管的损伤的管理的世界。