简介：Athree-dimensionalmathematicalmodelofthecombustionofpulverizedcoalandcokehasbeendeveloped.Themodelisappliedtotheblowpipe-tuyere-raceway-cokebedregioninanironmakingblastfurnaceinonecomputationaldomain,whichincludestwoparts:pulverizedcoalcombustionmodelintheblowpipe-tuyere-racewaycavityandthecoal/cokecombustionmodelinthesurroundingcokebed.Theeffectsofcoalpropertiesareexaminedcomprehensively,intermsofcoalburnoutandgasspeciesdistributions.TheresultsindicatethatusingacoaloffineparticlesizeorhighVMcontentcouldimproveburnoutandwouldaffectthegascompositionconsiderably.Theburnoutisexaminedintwoways:comparedwithburnoutalongtuyereaxis,burnoutovertheracewaysurfaceisamoresensitiveandsensibleparametertodescribetheamountofunburntcharenteringthecokebed.Themodelisusefulforexaminingtheflow-thermo-chemicalcharacteristicsofthepulverizedcoalinjection(PCI)processundervariousconditionsinablastfurnace.

简介：Aconoscopicholography-based3Dmeasurementsystemforanalyzingthedefectsonthesurfaceofsteelplateswasintroducedinthispaper.Thehardware,whichisautomatedthroughsoftware,performssamplingofthesteelplatesurface.Throughthesoftwareinterface,point-clouddataofthesteelplatesurfaceareobtainedandreconstructedtoforma3Dimageofthesteelplatesurface.Thesoftwareallowsautomaticanalysisofsteelplatesurfacedefectsthroughidentificationofthebulgesanddepressions.Inaddition,thesoftwarecanalsoautomaticallycalculatethedefectinformation,suchasthedeepestpoint,volume,openingarea,openinglength,andsoon,therebydeterminingthedefectsize.Theresultsdeterminedbythis3Dmeasurementsystemwerefoundtobeingoodagreementwiththeactualvalues.

简介：四lanthanide协作建筑群，也就是[行(2,3-DClBA)3(5,5-dmebipy)(H2O)]2(Ln=Sm(1),Eu(2)，Dy(3)，惊讶(4))；2,3-DClBA=2,3-dichlorobenzoate；5,5-dmebipy=5,5-dmethylbipyridine)被元素的分析，红外线的光谱学和单个水晶X光检查衍射综合并且描绘。调查结果显示建筑群3是一个dinuclear分子，并且中心Dy3+是八坐标的。每个dinuclear单位能被H债券和卤素卤素相互作用连接。建筑群2的光性质建议了Eu3+离子的典型强烈排出物。热分析证明建筑群在三分解了步：协作水然后第一被失去中立ligand5,5dmebipy被失去，最后，2,3-DClBAligand被失去。

简介：企业作为市场经济的主体,在信息瞬间万变、竞争日趋激烈的时代,单靠人力很难适应市场变化的要求,因而需要借助信息技术的最新成果,建立起良好的现代管理信息系统,迎接电子商务的挑战。

简介：云南驰宏锌锗股份有限公司会泽铅锌矿是我国一个千米深井矿山，其下属8号矿体采深已达1200余米，矿体赋存条件复杂，地应力高，导致微地震活动频发。本文根据微震监测数据及井下开采活动，对微震活动的时空分布、诱发模式以及预测预报进行了研究。结果表明：微震活动的时空分布主要与开采活动及地质构造有关，根据发生位置、震级大小、破坏特征可将微地震的诱发模式分为应变破裂、矿柱冲击以及断层滑移破裂三类，阐述了各自的发生机制。提出以地震学参数一活动率∑N／Δt、视体积VA、能量指数EI的时间序列曲线来预测矿震灾害，并对其物理意义及破坏过程中可能出现的特征进行了理论分析，现场应用后证明：地压灾害发生前，活动率∑N／Δt及视体积VA急剧增加，能量指数EI突然降低。

简介：随着信息技术的高速发展，信息全球化与网络趋势日益明显。如何提高网络信息技术在我国建筑工程管理中的应用，是我国建筑工程行业值得研究的重要课题。文章根据建筑工程管理的特点，指出了应用网络信息技术的重要性，并通过实例说明其应用原理。最后提出网络信息技术在建筑工程管理中存在的问题，有助于该技术在建筑工程管理更好的应用。

简介：ThephaseandmorphologytransformationduringthehydrothermaltreatingprocessofY2O3wasevaluatedwithX-raydiffcrcnce(XRD),scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM),particlesizeandspecificsurfaceareadetermination.TheresultsshowedthatthecubicY2O3didnottransferintohexagonalY(OH)3inpurewater.Therefore,purehexagonalY(OH)3withnanotubeandmicrorodmorphologieswereobtainedbyhydrothermaltreatingY2O3at150℃for12hin15mlof2mol/LNaOHsolutionwithandwith-outPVAorPEGItwassuggestedthatthecharacteristicpreferentialgrowthofY(OH)3wasattributedtothestructureanisotropyofhexahedronY(OH)3.TheadditionofPVAorPEGcouldpromotetheformingprocessofnanotubesbyselectiveadsorptionondifferentcrystalplanes,whichalteredthegrowthratealongdifferentdirectionsandresultedinthediffusionlimitofconstructingionsinthecentertopofrods.Finally,Y(OH)3:EuandY2O3:Eunanotubeswerealsosynthesizedbyusingthismethod,andtheirphotoluminescencepropertieswereevaluated.

简介：＂思想道德修养与法律基础＂（以下简称＂基础＂）属于高等院校思想政治理论课。课程目的旨在帮助＂大一＂新生,能够顺利实现从中学到大学的转变,引导其＂学会做人＂。将＂团体辅导技术＂引入到＂基础＂课中可以促使学生在开放的教学环境下,发挥主观能动性,激发学生的学习兴趣和对课堂参与的积极性,从而促进＂基础＂课教学质量和效果的提高。

简介：Thesolutionreactionmechanisms,composition,donoratoms,propertiesofcoordinatelinkandstabilityofthecomplexesonthesystemsofadrenalinewithNa3+,Gd3+andTm3+havebeenstudiedbypH-potentiometrictitrationandelectronicspectroscopy.Adrenalineperturbsthef-felectronictransitionofNd3+andTm3+sothattheabsorptionspectraoftheircomplexesareshiftedtowardlongerwavelengths.Theabsorptionspectraofthecomplexesformedbythethreef-blockelementionswithadrenalineareshiftedtowardshorterwavelengthswiththeincreaseofPHinΔγ=350～650nm

简介：分析了3S技术的特点,考虑矿区的具体情况和要求,探讨了3S技术应用于矿区工程的可行性和应用目标.

简介：YbAl3(BO3)4crystalofgoodopticalqualitywasgrownbythefluxmethod.ThestructureofYbAl3(BO3)4crystalwasdeterminedbysingle-crystalX-raydiffraction.TheexperimentshowsthatYbAl3(BO3)4belongstothedoubleborateswithatrigonalstructure.ThespacegroupisR32anditsunitcellconstantsweremeasuredtobea=0.92965nm,c=0.72129nm,V=0.53673nm3,Z=3.Thetransmittancespectraweremeasured.Thecut-offofYbAl3(BO3)4crystalis216nm,andtherearetwoabsorptionpeakslocatedat940and975nmfrom190nmto2600nm.ThethermalpropertiesofYbAl3(BO3)4crystalwerestudiedforthefirsttime.Theaveragethermalexpansioncoefficientsweredeterminedtobe2×10-6/℃,9.5×10-6/℃alonga-andc-direction.ThespecificheatofYbAl3(BO3)4crystalwasmeasuredtobe0.6695J·(g·℃)-1atroomtemperature.AllresultsindicatethattheYbAl3(BO3)4crystalisanexcellentstoichioimetriclasermaterial.

简介：近年来通过提高操作技术,380m3高炉生产技术经济指标进步明显,利用系数由2.85t/m3·d上升到3.2t/m3·d左右,焦比由原来410kg/tFe降到360kg/tFe,经济效益显著。

简介：介绍了本钢3号高炉电动开口机在长期使用中存在的问题以及改造为气动开口机后取得的显著效果。

简介：新区3200m3高炉喷煤系统采用中速磨负压制粉,一级高浓度低压脉冲长袋式收粉器收粉。喷吹系统采用双系列双罐并列单管路加分配器浓相输送工艺。喷煤系统按烟煤和无烟煤混喷设计,制粉系统按强爆炸性烟煤设计,最大喷煤比250kg/t,尾气排放煤粉质量浓度≤30mg/m3,喷煤系统投运后,运行正常,烟煤配比达40%,高炉喷吹效果良好。

简介：在达到一定勘查程度的金矿区,有条件的合理利用部分D级储量作为矿山建设依据,可以减少投资风险,保障黄金生产稳步发展。

简介：Er3+-Tm3+-Yb3+tri-dopedBaMoO4phosphorsweresynthesizedbyco-precipitationtechniqueandcharacterizedbyX-raydiffractionanalysis,absorptionstudyandfieldemissionscanningelectronmicroscopyanalysis.Upconversionaswellasdownconversionluminescencestudieswereperformedbyusingnearinfrared（980nm）andultraviolet（380nm）excitations.Energyleveldiagram,pumppowerdependenceandcolourcoordinatestudywereutilizedtodescribethemulticolorupconversionemissionproperties.Undersingle980nmdiodelaserexcitationthedualmodesensingbehaviourisrealizedviaStarksublevelsandthermallycoupledenergylevelsoftheTm3+andEr3+ionsinthepreparedtri-dopedphosphors.AcomparativefluorescenceintensityratioanalysisforintegratedemissionintensitiesarisingfromtheStarksublevels{1G4（a）and1G4（b）}andthermallycoupledenergylevels{2H11/2and4S3/2}oftheTm3+andEr3+ions,respectivelywascarriedoutinthepreparedtri-dopedBaMoO4phosphors.ThemaximumsensitivityforthermallycoupledenergylevelsoftheEr3+andStarksublevelsoftheTm3+ionwasreported.Thedevelopedphosphorscouldbeusefulinthedisplaydevicesandopticalthermometricapplications.

简介：本文采用高温团相反应合成TCaTiO3∶Pr3+红色发光材料、报道了Pr3+激活的CaTiO3的光谱特征及长余辉特性，并与CaS∶Eu的光谱特性及长余辉进行了比较。CaTiO3∶Pr3+将是一种具有广泛用途的新材料

简介：介绍了武山铜矿中段运输系统原3m3底侧卸矿车的设计特点。结合生产实际状况，对3m3底侧卸矿车在运行过程中出现的问题进行了分析，总结产生故障的原因，针对性的提出改进措施。现场使用表明，通过改进后，取得了良好效果，满足了矿山生产的需要。

简介：Eu3+activatedSr1–xEuxZrO3(x=0.01–0.04)phosphorwithperovskitestructurewassuccessfullysynthesizedbyusingcombustionmethod.Thestructure,morphologyandopticalpropertiesofthematerialwerecharacterizedbyX-raydiffraction,scanningelectronmicroscopyandfluorescencespectrometry.TheXRDresultsindicatedthatcrystalsofSrZrO3:Eu3+belongstotetragonalperovskitesystem.ThephosphorcouldbeeffectivelyexcitedbyUVlightandtheemissionspectraresultsindicatedthatreddish-orangeluminescenceofSrZrO3:Eu3+duetomagneticdipoletransition5D0→7F1at593nmwasdominant.Thus,thepreparedphosphorshowedremarkableluminescentpropertieswhichfindapplicationsinfieldemissiondisplay(FED)andplasmadisplaypanel(PDP)devices.

简介：从平移基础、推移装置、平移滑道,以及平移到位后的定位处理等几方面介绍了炼铁3~#高炉易地组装、整体平移施工技术成功实施的经验。