Raman探针上的半透膜信号增强技术

本文探讨利用半透膜法在Ｒａｍａｎ探针上进行信号增强的技术。实验表明，这种技术不仅不影响样品在Ｒａｍａｎ探针上的观察定位，而且能使样品的Ｒａｍａｎ信号增强１０倍以上，很适合于研究矿物气液包裹体中的Ｈ２Ｏ、ＣＨ４、Ｎ２及ＣＯ２等这些只有很弱的Ｒａｍａｎ光谱信号的样品。本文还讨论了Ｈｇ对气体分子Ｒａｍａｎ光谱的增强效应。     

含铁磷酸盐玻璃的制备及其结构研究

本工作用分析纯ＬｉＣＯ３，Ｆｅ２Ｏ３和ＮＨ４Ｈ２ＰＯ４制得了２０Ｌｉ２Ｏ－ｘＦｅ２Ｏ３－（８０－ｘ）Ｐ２Ｏ５系统玻璃，并应用红外和穆斯堡尔谱对其结构和铁的化学结合状态进行了研究。结果表明，玻璃中存在Ｆｅ（２＋）和Ｆｅ（３＋）离子，Ｆｅ（２＋）的配位数为６，而Ｆｅ（３＋）有４和６两种配位数。随Ｆｅ２Ｏ３含量的增加，Ｆｅ（２＋）／Ｆｅ比值减少，而Ｆｅ（３＋）（４配位）／Ｆｅ增加，发生［ＦｅＯ６］到［ＦｅＯ４］的配位变化，并且出现了焦磷酸盐基团的振动光谱．显然，玻璃的性质与Ｆｅ（２＋）／Ｆｅ和Ｆｅ（３＋）／Ｆｅ比值有关。     

DETERMINATION OF OSMOTIC VELOCITY OF LIQUID MEDICINE IN POROUS CERAMIC TUBE

Acquiring detail knowledge of the situation about release of medicial liquid is a key problem in clinical practice. By means of imitating the condition in the human body, the authors determined the osmotic velocity of anticarcinogen, antituberculotic, antibiotic and other medicines in porous ceramic tubes. In this paper, the methods to determine the osmotic velocity of anticarcinogen and to calculate the experimental data are mainly introduced.     

用电子探针定量测定水泥粉末样品的探讨

在水泥粉末样品中,找出粒度、压片压力与计数率强度之间的函数关系,用ＪＣＸＡ－７３３电子探针仪进行成分定量分析,取得了较好的效果。     

粉煤灰免烧砖工艺及性能

本文叙述免烧砖生产过程中的工艺配方，成型条件，外加剂的选择和养护方式，并通过一系列物理力学性能测试，证明了该砖各项性能优良。     

GeO2-PbF2-ZnF2玻璃的Raman光谱和结构

用Raman光谱研究了GeO     

RAMAN AND IR SPECTROSCOPY OF PTCR Ba_(1-x)Pb_xTiO_3 CERAMICS

Raman and IR spectra of Nb-dopedPTC Ba_(1-x)Pb_xTiO_3, semiconducting ceramics (x=0, 0.28, 0. 296, 0. 313, 0. 330, 0. 370 ) have been neasured,and mode assignments of Raman scattering frequenciesand itfrared absorption peaks have been made at roomtemperature. The influence of Pb~(2 ) ions content on resis-tivity temperature characteristics and vibration spectrafor the Ba_(1-x)Pb_xTiO_3 ceramics have been discussed,andthe temperature dependence of the Raman spectra in te-.tragonal and cubic phases have been investigated from25 to 340℃. The results indicated that the Raman spec-tra of the paraelectric phase above Curie point are obvi-ously different from that of ferroelectric phase belowCurie point are obviously different from that of ferro-electric phase below Curie point for all the samples. Curiepoint of each sample, which is determined by resistivity-temperature characteristic measurment, is in good agree-ment with the results of Raman analysis. The ferroelec-tric phase transition in the PTCR Ba_(1_x)