简介：Upwellingcoastalsystemscanbeusedtounderstandhowdissolvedoxygenandbiologicalproductivitycontroltheaccumulationofredox-sensitivemetalsinmarinesediments.Thealuminium(Al),cadmium(Cd),iron(Fe),nickel(Ni),molybdenum(Mo),vanadium(V),totalorganiccarbon(TOC),totalnitrogen(TN)andtotalsulfur(TS)contentsinsurficialsedimentcollectedfromdifferentwaterdepths(30,70,and120m)inthreenorthernChileanbaysinfluencedbycoastalupwellingandoxygenminimumzones(OMZs)weremeasured.Principalcomponentanalysis(PCA),clusteranalysis,andSpearman'srankcorrelationwereusedtoidentifythemechanismsresponsiblefortheredox-sensitivemetalaccumulation.Thecontentofredox-sensitivemetalsandorganiccomponentsinsedimentincreasedwithincreasingwatercolumndepth,whereaslithogenicmetalsdecreased.IntheMejillonesdelSurandCalderabays,theenrichmentfactorsoftheredox-sensitivemetalsshowedenrichmentforallmetalswithdepth.TheCdandVenrichmentsaremainlytheproductofbiogenicflowtotheseabed,andtheMoandNienrichmentsareduetopreservationunderlowsubsurfaceoxygenconditions.Sulfatereductionisnotanimportantmechanismintheaccumulationofredox-sensitivemetalsinthesedimentofthethreebays.ThePCAshowedthatthebehaviorsoftheredox-sensitivemetalsandorganiccomponentsreflectdifferencesintheeffectsoftheOMZinsedimentalongthecoastofnorthernChile,withamoreintenseOMZinMejillonesdelSurbayandweakerOMZsinCalderaandInglesabays.However,thehighdegreeofenrichmentinredox-sensitivemetalsinCalderaBaycanbeattributedtotheintenseactivityoftheminingindustrynearthebay,asituationthatproducesgeochemicalbehaviorsimilartothatobservedinMejillonesdelSurBay.

简介：TincorporationreachesforworldmarketAsarule,Chineseenter-prisesbuytechnologyandequipmentfromabroadtoupgradetheirownproduc-tion.However,YunnanTinCorporationisanexcep-

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简介：TheReservesofMineralResourcesinChinaTheMinistryofGeologyandMineralResourcesreportedthatallmineralproductsknownintheworldhavebeendiscoveredinChina.For148kindsofthesemineralsthereserveshavebeenverified.16000andmoremineralregionshavebeenrevealed.ThemineralreservesinChinarank

简介：Bigwheelstouranewenter-priseChina’sfirstaluminiumwheelplant,DicastalWheelManufacturingLtdinQinhuangdao,HebeiProvince,isexpectedtoturnout300,000wheelsthisyear.Thefirmisaforeignjointven-turewiththeChinaInternationalTrustandInvestmentCorporation(Citic)andthetotalinvestmentamountsto74millionyuan(＄14.8million).

简介：InthispapertheseparationofbasemetalsFe,Co,NiandCufromtheplatinummetalsonacationexchangercolumnwasstudies.Theconvenientseparationconditionsare0.5mol·dm^-3NaCl,pH=2.TherecoveryefficiencyofRhis98%.

简介：在过去的十年，biohydrometallurgy的领域里的进步是重要的。17新奇biomining微生物的一个总数被发现，并且八铜堆bioleaching种并且11黄金biooxidation植物被建立或膨胀。在这评论，它被总结为学习微生物引起的社区动力学和结构的最新孤立的biomining微生物和三个新奇微生物引起的生态的方法的生理的性质。另外，关于象铀，铝，碲，金者，铟，和第二等的稀罕金属资源那样的稀罕金属的biohydrometallurgy研究，以及象铜，镍，钴，和黄金那样的重非铁的金属被考察了，与在中国的一个重音。在未来，黄铜矿，稀罕金属，从废物的第二等的资源，和资源利用引起的环境污染的bioleaching上的进一步的研究是必要的。图形的AbstractZijinshan堆bioleaching植物与30,000的能力在2012重启操作?tonent蠨?蠨吗？？

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简介：磁控管劈啪作响被用来在micropowder表面上覆盖各种各样的金属。由使用这个方法，好粒子更好被驱散并且能因此同类地更涂。微粉末使用从烧煤的电力植物的苍蝇灰包括cenospheres(直径40200m和粒子密度0.7?汢湩?畦？

简介：ＳｉｌｉｃｏｎＰｈｏｔｏｄｉｏｄｅｗｉｔｈＶｅｒｙＳｍａｌＳｅｎｓｉｔｉｖｅＡｒｅａ①ＹＩＮＣｈａｎｇｓｏｎｇ，ＬＩＸｉａｏｊｕｎ（ＷｕｈａｎＵｎｉｖｅｒｓｉｔｙ，Ｗｕｈａｎ４３００７２，ＣＨＮ）Ａｂｓｔｒａｃｔ：ＴｈｅｓｉｌｉｃｏｎＰＮｊｕｎｃｔｉ...

简介：Viaseveraltechniquestomodifysensitivematrixforinhabitingtheleakageoffluorescentindicator,anewstablesensingmaterialformonitoringphosphateshasbeenpreparedandappliedtothemeasurementofphosphatesinartificialseawater.ItisbasedonthereactionofPO3-4withAl(Ⅲ)-Morinthatleadstothefluorescencequenchingofthecompositematrix.AtpHvalue4.0andthesalinityvalue25.0,theresponsetimeofoutputsignalhavingreachedthesteadystateislessthan300seconds.ItscalibrationgraphisgainedintherangeofH2PO-4massconcentrationfrom1.50to7.00μg/mLwiththelimitofdetection(3σ/K)0.02μg/mL.Whenitwasusedtomeasurephosphatesinartificialseawater,therecoveryrangedfrom96.78%to102.09%.Beingstoredunderthepropercondition,themembranesmaintainsensitivefor90-120days,andareabletobeusedfor50-80timeswithindicatorsupplement.

简介：Intramolecularvibrationsoflargemacromoleculesresideintheterahertzrange.Inparticular,proteinvibrationsarecloselyspacedinfrequency,resultinginanearlycontinuousvibrationaldensityofstates.Thisdensityofvibrationsinterfereswiththeidentificationofspecificabsorptionlinesandtheirsubsequentassociationwithspecificfunctionalmotions.Thischallengeiscompoundedwiththeabsorptionbeingdominatedbythesolventandlocalrelaxationalmotions.Astrategyforremovingtheisotropicrelaxationallossandisolatingspecificvibrationsistousealignedsamplesandpolarization-sensitivemeasurements.Here,wedemonstrateatechniquetorapidlyattaintheanisotropicresonantabsorbanceusingterahertztimedomainspectroscopyandaspinningsample.Thetechnique,modulatedorientation-sensitiveterahertzspectroscopy(MOSTS),hasanonzerosignalonlyforanisotropicsamples,asdemonstratedbyacomparisonbetweenasiliconwaferandawiregridpolarizer.Forsucroseandoxalicacidmolecularcrystals,theMOSTSresponseisinagreementwithmodeledresultsfortheintermolecularvibrations.Further,wedemonstratethat,eveninthepresenceofalargerelaxationalbackground,MOSTSisolatesunderlyingvibrationalresonances.

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简介：Byanalogueexperimentofexhaustgas,thesensitivecharacteristicsoftitaniatoair/fuelratiowasinvestigated.Theeffectsofsomeimpuri-tiesontheelectricconductivityofTiO2,thedeviationof（A/F）cfrom（A/F）sinnonequilibriumgassystemandtheself-catalyticoxidationofTiO2wereexplainedrespectively.Theeffectsofca-talyst,porosityandthicknessofsensorelementontheresponsetimewasalsoanalyzed.

简介：Atwo-dimensionalpositionsensitiveparauel-plateavalanchecounter(PPAC)witha100mm×100mmactiveareaisdevelopedfortheRadioactiveIon-BeamLineinLanzhou(RIBLL).ThedetectorconsistsofoneanodeplaneandtwocathodeswireplaneswhicharestripplanesforthePPACsusedinRIKEN~[1].TheanodeisaMylarfoilcoatedwithathinlayerofgoldoneachside.ThecathodeplanesXandYaremadeofgold-

简介：CONTENTSA.Physicsofmetalandmetallography(1-14)B.Testingandanalysis(1-2)C.Mechanical,physicalandchemicalproperties(1-15)D.Metallurgy(1-16)E.Metalworking(1-7)

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

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