β－烷氧羰乙撑基三氯化锡与N－芳基－2－羟基乙酰苯叉亚胺配合物的NMR谱与结构

测定了１２个新合成的有机锡－Ｓｃｈｉｆｆ碱配合物的１ＨＮＭＲ谱和１３ＣＮＭＲ谱．详细研究了化合物结构与ＮＭＲ谱的关系．通过比较配体和配合物的ＮＭＲ谱，得出配合物是通过酚羟基氧原子和锡原子的配键生成的．     

C_（60）／PMMA的单重态激发态吸收光限幅研究

研究了Ｃ６０／ＰＭＭＡ对波长５３２ｎｍ，脉冲宽度为２１ｐｓ的脉冲激光的限幅特性，并应用三能级模型进行了理论模拟。结果表明光限幅起源于单重态激发态吸收     

用缀饰原子法研究强激光场驱动下的共振荧光

本文用缀饰原子方法研究了单模激光场驱动下的两能级原子系统的共振荧光.通过在主方程中唯象地引入激光模的激发项补偿散射过程,使该模式中光子数减少.得到了主方程的定态解.并由此得到了共振荧光谱的强度分布及谱线形状.     

甲苯二异氰酸酯改性醋酸纤维素膜材料

本文研究了用甲苯二异氰酸酯对醋酸纤维素进行改性,以增强高聚物的物理性能和耐菌性能。探讨了反应时间、原料配比、反应温度、催化剂用量及产物分离用的溶剂等因素对合成高聚物材料的影响。对交联后的醋酸纤维素苯基氨基甲酸酯铸成的反渗透膜的水通量、脱盐率、耐水解性和耐微生物的稳定性能的测试表明,经改性的醋酸纤维素膜具有较好的上述性能,是一种良好的膜材料。     

INFLUENCE OF RELATIVE DENSITY AND PARTICLE SIZE ON THE SPECIFIC HEAT OF NANOCRYSTALLINE IRON

The specific heats of two nanocrystalline iron samples with different structures have been measured in the temperature range from 2 to 26 K. Experimental results show that the specific heat of nanocrystalline iron samples exhibits abnormal characteristic compared with that of standard bulk iron. The contributions of quantum size effect, surface mode and Einstein mode have been observed in the measurement. Through analyses, it is discovered that the relative density and particle size have a great influence on specific heat of nanocrystalline iron at low temperature.     

离子阱质谱计及其在团簇科学中的应用

在离子阱物理和技术基础上，发展了离子阱质谱技术，并将这一高灵敏原位检测技术用于激光溅射产生并囚禁碳原子团簇离子，质量选择存储以及化学反应等研究，并报道了相关应用研究的进展和结果。     

Possible Experimental Evidence of a Moderate Proton Halo in ^29S

The total reaction cross sections (TRCSs) of^29S ^28Si have been measured at intermediate energies. An obvious enhancement in TRCS of ^29S is observed as compared with its neighbouring nuclei. The TRCSs of ^29S ^28Si arecal culated with the modified Glauber theory in the optical limit and few-body approaches. The different factor d as a possible measure of halo appearance is deduced from the experimental and theoretical data. It is well accepted that ^27p is a proton halo nucleus. Although not as anomalous as ^27p, the different factor d of ^29S is obviously larger than that of its neighbouring isotones of N = 13. This result indicates that a moderate proton halo may exist in ~9S nucleus. We calculate the total reaction cross sections for ~9S with the modified Glaubertheory as a function of incident energy and compare the results with those for 2rSi which is a core nucleus 0f29S.The measured TRCSs of 27Si4-2SSi can be described to be satisfactory by the modified Glauber theory of theoptical limit approach. Although a diffused nuclear density distribution is used, the theories still inadequatelypredict the experimental TRCSs of 29S4-2SSi, which further indicates the possibility of proton halo in 29S.     

富勒烯衍生物的红光光限幅实验

应用钛宝石可调谐脉冲激光,在波长为691nm、脉冲宽度为10ns的条件下,研究了新型富勒烯叠氮乙酰氨衍生物(N-acetamide1,2-dihydro-1,2-azafulerene[60])的光限幅特性。