乙醇—丙烯酸体系中乙醇的γ辐解研究

研究了乙醇-丙烯酸体系在低剂量下的γ辐解产物H_2、2,3-丁二醇及乙醛的生成.结果表明,乙醛不是在α-羟乙基自由基的歧化反应中生成的,而是来源于刺迹中的快反应;在该体系中丙烯酸(未与溶剂化电子反应)可清除H原子,其反应速率常数k_4=7.5×10~(9)mol~(-1)s~(-1);2,3-丁二醇由α-羟乙基自由基的再结合反应生成,动力学方程可表示为:G=G_0—[k_(11)/2(k_10)~(1/2)](G/K'D)~(1/2)[AAH].     

液晶环氧树脂复合材料的研究进展

综述了液晶环氧树脂复合材料的国内外研究进展，介绍了液晶环氧树脂复合材料的种类和各种液晶环氧树脂复合材料的性能，并简述了液晶环氧树脂复合材料研究发展方向。     

THE EFFECT OF POLAR ADDITIVES ON THE γ RADIATION INDUCED POLYMERIZATION OF STYRENE*

The γ induced polymerization of styrene in the presence of polar additives such as tributylphosphate, triethyl amine and ethanol was studied at dose rate of 5.0×10~(17) eV/ml. min. The re-sult shows that radiation induced polymerization of styrene was sensitized by the three kinds ofadditives at the approximate same rate and the experimental results were in agreement with thetheoretical calculation of WAS equation. The cause of sensitization is due to the proton transfer.     

蒎烯衍生的有机硼化合物的合成及在不对称还原中的应用

综述了由蒎烯衍生的六种有机硼还原剂的合成方法,并讨论了这些还原剂对十类不同类型酮的还原反应及其应用。     

可再生能源的开发与利用

为了人类持久的能源供应及日益严重的环境问题，由石化能源逐步过渡到以再生能源为主的时代终将来临。本文简单介绍了新能源在我国发展的优势、条件及目前的发展状况。     

Sugeno测度空间上的一类回归估计问题的界

在Sugeno测度空间上进一步探讨了统计学习理论.给出了Sugeno测度空间上gλ随机变量的条件期望的定义;在Sugeno测度空间上利用带加性噪声的观测数据,建立了一个由级数展开表达的回归估计模型,并针对此模型给出并证明了它的一个界.     

Spectroscopy and dynamics of the isolated sp2 CH chromophore in trideuteroacetaldehyde CD3CHO as derived from extrapolated SDCI ab initio calculations

Ab initio CI potential energy (PES) and dipole moment (DMS) surfaces have been calculated with singles and doubles excitation configuration interaction (SDCI) for the 2-dimensional isolated sp² CH chromophore subspace of trideuteroacetaldehyde (CD₃CHO). Different extrapolation schemes to full-CI have been applied after the extrapolation to full-SDCI. Vibrational band centres and absolute intensities are determined variationally on six extrapolated surfaces. The band centres are analysed within the effective Hamiltonian model for isolated CH chromophores and the effective spectroscopic parameters are compared for the different extrapolation schemes. Time dependent population evolution for vibrational quantum motion with a pure CH stretching state being initially populated is calculated for some of the extrapolated surfaces within the effective Hamiltonian model.