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简介：1.TheStateCouncilpublishedtheWhitePaperon'SituationandPoliciesofChina'sRareEarthIndustry'TheStateCouncilpublishedtheWhitePaperon'SituationandPoliciesofChina'sRareEarthIndustry'onJune20,2012.Itcomprehensivelyintroducedcurrentsituation,problemsbeingconfrontedandrelatedpoliciesofChinarareearth

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简介：摘要目的为了解我州基层一线煤炭生产企业职工煤工尘肺患病情况,及时发现职业禁忌症、职业病的发生情况，为企业采取相应防治措施提供科学依据。方法按照《职业健康监护技术规范》GBZ188-2007开展煤炭生产企业职工职业健康检查,依据《尘肺病诊断标准》GBZ70-2002做出相关诊断。结果基层煤矿工人职业病（煤工尘肺）患病率较高，接尘人员煤工尘肺检出率为5.6%，患病年龄多在在30至50岁之间，占总患病人数的95.5%；接害工龄在10年以下占患病人数的54.5%，其中接害工龄以6-9年为患病高峰。结论提示基层煤炭企业职业病危害情况很严重,必须加强对煤炭企业职业病危害因素的控制及职业卫生管理体系的建设。

简介：WestudythedualDunkl-SonineoperatortSk,onRd,andgiveexpressionoftSk,e1,usingDunklmultiplieroperatorsonRd.Next,westudytheextremalfunctionsfμλ,λ>0relatedtotheDunklmultiplieroperators,andmorepreciselyshowthat{fμλ}λ>0convergesuniformlytotSk,e(f)asλ→0+.CertainexamplesbasedonDunkl-heatandDunkl-Poissonkernelsareprovidedtoillustratetheresults.

简介：Akindofdual-band-stopfilterwithanunsymmetricalT-shapedefectedgroundstructure(DGS)isproposed.Thefilterhastwobandgapcentersat4.9GHzand7.35GHz,respectively,wherethetwocentrefrequenciesarejustthesecondandthirdharmonics2.45GHz.Thefilterswithhighband-stopperformanceandwidebandspurioussuppressioncanbeachievedbycascadingminiaturizedunsymmetricalT-shapeDGS.Theattenuationofthree-cascadedT-shapeDGSfilteris30.77dBat4.9GHzand17.96dBat7.35GHzrespectively.Theaboveexperimentalresultsareingoodagreementwiththesimulationresults,especiallyforthethirdharmonic.

简介：Thedual-frequencycapacitivelycoupledplasma(DF-CCP)withinductiveenhancementsystemisanewlydesignedplasmareactor.Differentfromtheconventionalinductivelycoupledplasma(ICP)reactors,nowaradiofrequency(rf)powerisconnectedtoanantennaplacedoutsidethechamberwithaone-turnbarecoilplacedbetweentwoelectrodesinDF-CCP.Thispapergivesadetaileddescriptionofitsstructure.Moreover,investigationsonsomecharacteristicsofdischargesinthisapparatusweremadeviaaLangmuirprobe.

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简介：EQrot1nonconformingfiniteelementapproximationtoaclassofnonlineardualphaselaggingheatconductionequationsisdiscussedforsemi-discreteandfully-discreteschemes.Byuseofaspecialproperty,thatis,theconsistencyerrorofthiselementisoforderO(h2)oneorderhigherthanitsinterpolationerrorO(h),thesupercloseresultsoforderO(h2)inbrokenH1-normareobtained.Atthesametime,theglobalsuperconvergenceinbrokenH1-normisdeducedbyinterpolationpostprocessingtechnique.Moreover,theextrapolationresultwithorderO(h4)isderivedbyconstructinganewinterpolationpostprocessingoperatorandextrapolationschemebasedontheknownasymptoticexpansionformulasofEQrot1element.Finally,optimalerrorestimateisgainedforaproposedfully-discreteschemebydifferentapproachesfromthepreviousliterature.

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简介：Micro-arcoxidation(MAO)processwascarriedoutinanoptimizeddualelectrolytesystemtofabricateacompact,smooth,andcorrosionresistantcoatingonZK60Mgalloy.Themicrostructuralcharacteristicsofcoatingwereinvestigatedbyscanningelectronmicroscopy(SEM)coupledwithanenergydispersivespectrometer(EDS)andX-raydiffraction(XRD).Testofmasslosswasconductedata3.5%NaClsolutiontoassesstheresistancetocorrosion.ThebondingstrengthbetweenthecoatingandZK60substratewasevaluatedusingscratchexperiment.TheresultsrevealthatMgAl2O4andMgOarethemainphasesofceramiccoatingobtainedinthedualelectrolytesystem.Thecorrosionrateofcoatingpreparedintheoptimizeddualelectrolyteisonly0.0061gám-2áh-1,whichdemonstratesexcellentcorrosionresistance.Thisismainlyduetothecompact,uniformcoatingwithhighbondingstrength.