Li M XM n 2-XO 4(M=C r、A1)尖晶石相阴极材料研究

用溶胶-凝胶法制备了LiMxMn2-xo4(M=Cr、Al;x≤0.2)尖晶石相锂离子电池阴极材料.SEM表面观测显示材料的晶形好,粒度均匀,粒径小于0.5微米.电化学测试表明,低水平量(0.02≤x≤0.05)的Cr、Al掺杂材料初始容量稍有降低,但却较大地改善了循环性能.在LiMxMn 2-xO4中,掺Al降低了Li+、Mn3+占位的无序度;Cr3+和Al3+取代了其中的部分Mn3+,占据八面体位(16d),抑制了Jahn-Teller效应,增强了尖晶石骨架的稳定性,提高了其电化学性能.在3.0～4.3V的充放电过程中,材料中的Cr、Al都保持+3价不变,不发生氧化还原.     

萤石：Eu2+的发光及微结构

萤石掺杂Eu在还原气氛下灼烧可制备出发蓝色荧光的萤石 :Eu2 +晶体 ,该体系的发光为5d→ 4f跃迁发射。在萤石 :Eu2 +体系中对称程度较高的 [0 11]方向发现Eu或F点缺陷 ,但其对发光体整体发光影响不大 ;对发光有重要作用的是对称性较低的 [ l12 ]、[0 13]方向的Eu2 +及F晶簇。Eu2 +晶簇与基体界面会产生定域能级     

山东烟台金斗山金矿非金属矿物成因矿物学研究

对产于烟台金斗山金矿内的贯通性非金属矿物石英及碳酸盐类的化学成分、晶体习性、流体包裹体和天然热发光特征做了研究，结果表明，矿床的主成矿阶段的环境介质为酸性偏中性，富矿和贫矿石英的热发光曲线均为双峰型，但峰点温度、总积分强度有显著差异。碳酸盐类矿物的总体演化趋势为从富镁铁向富钙方向演化，碳酸盐热发光曲线的峰型和积分强度是判别成矿期和非成矿期碳酸盐的可信参数。     

脉冲电晕与地闪负先导梯级性机制模式探讨

根据新的观测事实，提出了地闪负先导明亮脉冲可能不是被－慢而弱的流光（引路流光）所此导，而是被一快而短暂的电晕（脉冲电晕）所引导的梯级性流光机制的不同观点。由此出发，对流光间歇时间、梯级长度等重要特征参数进行了新的分析；结合对梯级先导辐射特征脉冲产生机制的进一步分析，提出并论证了明亮脉冲的双向传输，通过一个简单的数值模式对梯级过程进行了计算模式，得到了一些与观测特征基本符合的结果。     

天然萤石的喇曼光谱和发光谱研究

本文着重报导对采自我国不同地区和不同成因类型的２３个天然萤石样品所进行的喇曼光谱测定和研究结果，大多数样品也同时显示发光谱，研究发明，萤石的喇曼图谱与其成因类型，样品的颜色，特别是所含稀土总量密切相关，低温有利于发光谱线的呈现，而高温则怡恰相反。     

锡铁山铅锌矿中石英,方解石的热发光研究

在测试锡铁山铅锌矿中石英、方解石热发光的基础上，结合石英、方解石中微量元素特征，研究其热发光曲线特征和参数特征，并对比其它铅锌矿区石英、方解石热发光的资料，认为锡铁山铅锌矿中石英的热发光强度愈大，反映的含矿性愈差；方解石的热发光受其方解石中Ｍｎ＾２＋（Ｆｅ＾２＋）和ＲＥＥ＾３＋的影响，靠近矿体的方解石热发光强度降低，为进一步扩大矿区找矿工作提供了石英、方解石热发光的科学依据。     

佳木斯地块金矿石英的热释发光与含金性

乌拉嘎、平顶山、老柞山金矿是佳木斯地块三个重要的金矿。研究表明，石英是金矿中重要的脉石矿物，也是金的主要载体。ＳｉＯ２含量低于９８％，而∑（Ａｌ２Ｏ３＋Ｋ２Ｏ＋Ｎａ２Ｏ）含量高于１．３％的石英为含金石英；含金或富含金石英的热释发光谱以双峰或多峰为其主要特征。因此，上述石英的标型特征可作为金矿床重要的找矿标志，对佳木斯地块的矿点评价和扩大找矿远景有着重要的意义     

翡翠在紫外光下的发光规律

翡翠在紫外光下的荧光现象,主要与翡翠矿物中Ｃｒ及Ｆｅ的含量有关,荧光强度的倒数与矿物中Ｃｒ＋Ｆｅ／Ａｌ＋Ｃｒ＋Ｆｅ的比值成正变关系。在荧光观察中要注意矿物裂隙及微量矿物杂质“绵”影响,外来物质蜡、油、胶粘剂可导致翡翠异常荧光,并据此作为翡翠经受“处理”的判定依据之一。     

对虾发光病的病因学与病理学特征

对虾人工养殖中流行发光病，病因学研究证明为一种致病性亮弧菌Ｉｖｉｂｒｉｏｓｐｈｌｅｎｄｉｄｕｓ１所致细菌杆状，稍弯，大小为０．４－０．６×１．５μｍ，单极鞭毛，革兰氏染色阴性，对葡萄糖发酵产酸，氧化酶、接触酶、精氨酸双水解酶、淀粉酶均为阳性，对弧菌抑制剂０／１２９敏感，在弧菌选择培养基上生长良好。     

A preliminary study on thermoluminescence characteristics of sediments from the North Pacific

Thirty-eight surficial deposit samples were collected from the equatorial North Pacific, and the natural thermoluminescence (TL) characteristics of both bulk and clay fraction samples (<2 μm fractions) were studied by the FJ427-A1 automatic TL Dosimeter for the first time. With the measurements of clay mineral composition, element composition by XRD and ICP, the correlations between TL intensity and sedimentary environment proxies were analyzed, such as water depth, ratio of FeO to Fe2O3 contents, LOI, and major clay mineral concentration, and it was found the bulk sample’s TL signal was stronger than the clay ones. Usually, increase in the clay components may result in the decrease of TL intensity. From the shape of TL curves, the pelagic sediments can be divided into two groups: the majority group has two glow peaks, in general, the first peak is broad and flat, but the second narrow and sharp; the minority group only has a single peak because the first is absent. The peak centers of TL curves are almost fixed, falling in the temperature sections 230~260 and 390~405 ℃ respectively. Lorentz model packed in the Origin 7.5 was chosen to deal with the TL curves. From the processing results, three parameters (H, C and A), corresponding to the height, center, and kurtosis of TL curve, were obtained to describe the curve characteristics. The correlations between TL curve parameters and sedimentary environment proxies were also calculated. On the basis of the above work, the relationship between TL characteristics and sediment type, mineral composition, sedimentary environment of surface sediments was discussed in the study area, and a conclusion is: sediments from the environment of shallower water, higher organic contents and weaker reductivity have stronger TL signals.