理论函数法的快扫相关核磁共振谱测量研究

快扫相关核磁共振谱测量可用理论函数法或参考信号法来实现。本文对理论函数法的快扫相关核磁共振作了理论和实验的研究,并把该方法与参考信号的快扫相关核磁共振作了分析比较,其结果为快扫相关核磁共振谱测量工作提供了有用的参考。     

Research and Development of Nuclear Heating Reactors in China

ＲｅｓｅａｒｃｈａｎｄＤｅｖｅｌｏｐｍｅｎｔｏｆＮｕｃｌｅａｒＨｅａｔｉｎｇＲｅａｃｔｏｒｓｉｎＣｈｉｎａＷａｎｇＤａｚｈｏｎｇ（王大中）；ＺｈｅｎｇＷｅｎｘｉａｎｇ（郑文祥）；ＬｉｎＪｉａｇｕｉ（林家桂）；ＭａＣｈａｎｇｗｅｎ（马昌文）；ＤｏｎｇＤ...     

FirstIdentificationofLevelSchemesinNeutron─richIsotopes141Xe，152Ceand160Sm

ＦｉｒｓｔＩｄｅｎｔｉｆｉｃａｔｉｏｎｏｆＬｅｖｅｌＳｃｈｅｍｅｓｉｎＮｅｕｔｒｏｎ┐ｒｉｃｈＩｓｏｔｏｐｅｓ１４１Ｘｅ，１５２Ｃｅａｎｄ１６０Ｓｍ＊ＺｈｕＳｈｅｎｇｊｉａｎｇ（朱胜江），ＷａｎｇＭｕｇｅ（王牧歌），ＤｅｎｇＪｉｎｇｋａｎｇ（邓景康）...     

模板分子四甲基乙基二胺在丝光沸石、ZSM－5及ZSM－35孔道中的位置及模板分子与骨架的相互作用

用化学分析、粉末Ｘ射线衍射、傅里叶红外吸收光谱、热失重及差热分析、１３Ｃ魔角固体核磁交叉极化（ＣＰ）及高功率去偶（ＨＰＤＥＣ）谱对由模板分子四甲基乙基二胺（ＴＭＥＤＡ）导向合成的高硅沸石ＺＳＭ－５、ＺＳＭ－３５及丝光沸石进行研究，揭示了该模板分子在沸石孔道中的位置、运动状态及模板分子与骨架的相互作用．     

Elucidation of the relationship between enzyme activity and internal motion using a lysozyme stabilized by cavity-filling mutations

We investigated the activity and the internal motions of a stabilized mutant hen lysozyme (HEL) in which the residues M12 and L56 were mutated to L and F, respectively (LF mutant HEL). The result of the activity measurements against glycol chitin at various temperatures suggested that the temperature dependence of the activity of LF mutant HEL shifted to the high-temperature side compared with that of wild-type HEL. The detailed internal motions of LF mutant HEL in the absence and presence of a substrate analogue, (NAG)₃, were examined by model-free analysis at 35°C. The results showed that the internal motions of LF mutant HEL in the presence of (NAG)₃ were drastically restricted compared with those in wild-type HEL. Our findings thus suggested that the mutation to the stabilized lysozyme restricted internal motions required for the enzymatic reaction.Received 8 February 2005; accepted 10 March 2005Y. Yoshida and T. Ohkuri contributed equally to this work.     

高能重离子碰撞赝快度分布分析

采用多源理想气体模型的蒙特卡洛方法重点模拟分析了Cv-Cv碰撞在22．4GeV,62．4GeV,200GeV三个作用能量下中心碰撞的快度分布特点,以及快度分布宽度与纵向流,核阻止度,次级碰撞等中高能重离子碰撞机制的关系．     

福岛核事故冲击下的日本核电

福岛核事故后,福岛核电站遭到严重破坏,日本其它的核电站受其影响也进行了调整。福岛核事故暴露出了日本核电发展的很多问题,本文对此进行了探讨,并提出了五点启示。最后,对日本核电的发展前景进行了分析。