化合物Cs3Dy2Br9合成机理的相化学研究

研究了ＣｓＢｒ与ＤｙＢｒ３在氢溴酸介质中反应的四元体系ＣｓＢｒ－ＤｙＢｒ３－ＨＢｒ（１３％）－Ｈ２Ｏ（２５℃）相化学关系，发现了新物相５：３型化合物５ＣｓＢｒ．３ＤｙＢｒ．２４Ｈ２Ｏ，并对其进行了Ｘ射线，ＤＴＧ，ＤＴＡ及偏光显镜等方面的研究。     

四元体系CdCl2-LaCl3-(9.7%)HCl-H2O在298K的相平衡及其固相化合物的研究

The equilibrium solubility of the LaCl₃-CdCl₂-(9.7%)HCl-H₂O quaternary system at 298K was determined and the phase diagram was constructed. The results show that the system is complicated with four equilibrium solid- phases CdCl₂·H₂O， 8CdCl₂·LaCl₃·16H₂O(8∶1 type)， 4CdCl₂·LaCl₃·12H₂O(4∶1 type) and LaCl₃·7H₂O， respectively. The two new compounds 8CdCl₂·LaCl₃·16H₂O(8∶1 type) and 4CdCl₂·LaCl₃·12H₂O(4∶1 type) are congruently soluble in ～9.7% HCl-H₂O medium and have not yet been reported in literatures. Both com-pounds have been prepared from the system and have been characterized by XRD， TG-DTG and DSC.     

Studies on a New Material for Hydrogen Storage and Supply by Modified Fe and Fe2O3 Powder

Modified iron oxide, a new material for hydrogen storage and supply to polymer electrolyte fuel cell （PEFC）, was prepared by impregnating Fe or Fe2O3 powder with an aqueous solution containing metal cation additives （Al, Cr, Ni, Co, Zr and Mo）. Hydrogen storage properties of the samples were investigated. The results show that both Fe and Fe2O3 powder with additive Mo presented excellent catalytic activity and cyclic stability, and their hydrogen producing temperature could be surprisingly decreased. The temperature of forming hydrogen for the Fe2O3-Mo at the rate of 250 μmol·min^-1·Fe-g^-1 could be dramatically decreased from 527 ℃ before addition of Mo to 283 ℃ after addition of Mo in the fourth cycle. The cause for it was probably related to preventing the sinter of the sample particles. In addition, hydrogen storage capacity of the Fe2O3-Mo can reach w=4.5% （72 kg H2/m^3）, close to International Energy Agency （IEA） criterion. These show the value of practical application of the Fe2O3-Mo as the promising hydrogen storage material.     

Phase Equilibrium System of CsCl-YCl3-（9.5%）HCL-H2O at T=298.15 K and Its Compounds

Introduction In a series of papers the authors reported the spec-troscopy results on upconversion luminescence of the double salts between the alkali metal (Rb,Cs) halide and rare earth metal trihalide (REX3).1-4 Consequently, ex-tensive syntheses of new double salts and studies on optical properties of such species have received much more attention.5-12 Although a number of these double salts have been synthesized, the formation in alkali metal halide/rare earth metal halide double salts s…     

建立基于eTOM和ITIL的运维流程管理体系探讨

流程重组和信息化建设是当今企业的重头戏,企业在进行流程重组和信息系统建设的时候,行业标准具有重要的指导意义.eTOM是电信管理论坛制定的针对电信行业的业务过程框架,是对电信企业经营管理活动的抽象和归纳,是电信企业的业务流程标准.ITIL是企业内部IT部门用于进行IT系统运维管理的流程标准,是IT领域的最佳实践.对于电信企业来说,如何应用eTOM和ITIL来建立自己的流程体系,打造一流的运维管理体制,是实现从优秀到卓越的关键;如何将国际规范最先进的技术和管理理念运用在企业实践中,打造一流的运营支撑系统,是提高核心竞争力的关键.     

分子链间距离对于卟啉侧链聚合物稳态及瞬态发光性能的影响

采用荧光光谱技术,测量了一种卟啉侧链聚合物:卟啉丙烯酸酯-苯乙烯共聚物(P[(por)A-S])的稳态和瞬态的发光性能.通过将聚合物P[(por)A-S]掺杂到有机玻璃(PMMA)中,研究了链间距离对于P[(por)A-S]发光性能的影响.结果表明:随着聚合物分子浓度增大,即链间距离减小,导致卟啉侧链基团之间的相互间作用增加,使其激发态无辐射跃迁几率增加,聚合物荧光强度减弱,激发态寿命缩短.讨论了上述过程产生的原因.     

激光参数测试仪器联合鉴定会在重庆召开

1986年12月24至27日,国家科委新技术局委托重庆市科委和中国计量科学研究院在重庆召开“激光参数测试仪器”鉴定会。鉴定的主要项目有4项,它们是:中国计量科学研究院研制的“高灵敏、宽波段激光功率计”;中国科学院上海光机所研制的“JK-80大口径激光能量计”;中国科学院物理所研制的“LE-2A型双通道、高灵敏、宽波段激光能量计”;重庆光学机械研究所研制的LER-1型高灵敏、宽波段激光能量计”。这些测试仪器都是国家科委下述的“六五”科技攻关项目,经讨几年的研究试制,