教学策略摭谈

教学策略是影响教学质量的关键因素之一，教学策略可促进学习策略的习得，它是使教学理论和教学实践相联系的中介；而活动是教学策略的具体体现，所以教学策略对教学改进有着十分重大的意义。     

锌—钒酸酐固态蓄电池

本文报道锌蒙脱石(montmorillonite)作为固体电解质组装的锌—钒酸酐固态蓄电池,其开路电压为1.4—1.5V,在82kΩ负载下,截止电压0.9V 时,单次放电容量为5.7mA.h,比能量11.4W·h/kg,在37.7μA/cm~2电流密度下,十小时率充放电循环25次.还对部分内容进行简单讨论.     

用硫酸联氨还原、硫酸铈铵滴定钼的研究

本文用硫酸联氨还原、硫酸铈铵滴定测定钼酸铅试样中的钼，详细探讨了还原钼时的酸度和硫酸联氨用量、滴定钼的酸度、测定钼量、外加离子等试验条件。用选择条件测量约含１０ｍｇ钼酸铅试样，误差小于０．５％，相对标准偏差为０．２％。方法可用于测定用钼酸铅沉淀法初分离出来的、含有某些杂质的钼酸铅中的钼，也可用于钼溶液浓度的标定。图５，表１，参３。     

运动电荷产生的位移电流磁场

本文计算了运动电荷在低速和高速两种情形下所产生的位移电流磁场，从而指出了在高速情形下位移电流所产生的磁场是必须考虑的。     

固相合成促性腺激素释放激素GhRH及其类似物

采用Merrifield多肽固相合成法 ,合成了促性腺激素释放激素GhRH ,即PGlu·His·Try·Ser·Tyr·Gly·Leu·Arg·Pro·Gly·NH2 以及类似物 [D -Ala6][去Gly·NH102 ]GhRH乙基酰胺 ,即PGlu·His·Try·Ser·Tyr·D -Ala·Leu·Arg·Pro·NH C2 H5和 [Arg2 ]GhRH ,即PGlu·Arg·Try·Ser·Tyr·Gly·Leu·Arg·Pro·Gly·NH2 ,并得到纯品     

MgS+ZrS_2固体电解质定硫探头的开发

应用特殊方法自行合成了MgS,ZrS_2,MOS_2,WS_2和TiS_2等高熔点硫化物。以MgS+ZrS_2作为固体电解质,以Mo+MoS_2作为参比极,组成定硫探头:Mo|Mo+MOS_2‖MgS+ZrS_2[S]_(Fe)|Mo,在大气气氛下,于1638K,测定了铁水[S]含量。以Mo+MOS_2和W+WS_2作为已知硫分压的参比极和被测极组成定硫探头:Mo|Mo+MoS_2‖MgS+ZrS_2|W+WS_2|Mo,测定了MgS+ZrS_2固体电解质的特征硫分压P_e~＇(s)。试验结果表明,新开发的定硫探头可用于测定铁水[S]含量。     

Low-heating solid state synthetic reactions of cyclopeantadienyl organolanthanide complexes

A novel and simple one-step,solid state reaction of multicomponent systems has been developed to synthesize cyclopentadienyl-containing organolanthanide complexes,in which the effects of the coordinated solvent molecules and the nature of the reactants were also studied.We also studied the solid state decomposition reaction of Cp2 YbPz(HPz),and the formation of [CpYb(Pz)2|2 may indicate that the constrained environment in solid state can lead to a novel chemical transformation,with product selectivity possibly different from that in the liquid phase.     

Fluorescence quenching effect of metal ions for α,α''''-diamine containing conjugated polymers in solid films

The fluorescence quenching effect of the conjugated polymers P1 and P2 (the molecular recognitions are twisted 2,2'-bipyridine (bpy) and planar 1,10-phenanthrolin (phen), respectively) films upon the addition of metal ions has been studied. And the results showed that P2 exhibited stronger fluorescence quenching ability upon the addition of both transition metal ions and main group metal ions compared with that of P1. The 20° twist angle between the two consecutive pyridine rings of bpy unit in the P1 main chain is the reason for the weaker fluorescence quenching ability compared with P2, in which the planar phen unit can chelate with metal ions relatively freely without the conformational transition. So P2 is a kind of material with better properties for solid film devices, such as sensors for metal ions recognition.     

Variation of iron species in sliding mud

Results of Mössbauer spectroscopy and ICP-AES measurement revealed a special distribution pattern of iron species in four crossing profiles of the Tertiary Formation Type of Landslides in Japan. In comparison with host rocks, the sliding mud in the landslide slip zone contains the higher ferrous iron content and/or trace pyrite, which indicates that the forming environment was relatively reducing. The total iron content also increased with an increase in ferric iron and pyrite, in contrast, decreased with an increase in ferrous iron content. The deep-gray and black mud layers formed and accumulated in various volumes within landslide slip zones are treated as the basic criteria for the slipping activity, because the soft mud saturated with groundwater is easy to create a plastic deformation.     

牙本质及其与偶联剂CGE(N)-R相互作用的表面状态研究

采用光镜、透射电镜及固体荧光测定考查了用自制偶联剂CGE（N）－R型处理前、后的牙本质表面状态。光谱下显示，牙本质小管及其小孔，以脱钙后更为清晰。电镜下能直接观察到偶联剂晶体被牙本质吸附的状态。荧光光谱测定结果表明：偶联剂处理后的牙本质的荧光峰位红移达11－31nm，由此给出了偶联剂与牙本质之间化学结合的明确信息。为牙本质与偶联剂结合机理模式的建立提供了有力的实验依据。