Synthesis and magnetic property of a nitroxide based on C60

The compounds containing stable nitroxide radicals possess magnetic properties for the free radical have net magnetic moment. Oxidization of the [60]fulleropyrolidine obtained from the reaction of C60 with diketone and 2-aminoisobutyric acid by m-chloroperoxybenzoic acid gives a new nitroxide integrated with C60. The stable nitroxide based on C60 is confirmed to be antiferro- magnetism with quantum design superconducting quantum interference device (SQUID).     

新手性Schiff碱的合成及其不对称加成反应的研究

合成了４个手性Ｓｃｈｉｆｆ碱，探讨了它们与亚磷酸酯的不对称加成，立体选择性对加成反应的影响为：Ｍｅ＜Ｅｔ＜ｎ－Ｐｒ＜ｉ－Ｐｒ，即Ｒ的体积效应与立体选择性相一致，合成并分离出了８个新手性（＋）或（－）α－（３－莰２’－基脲基）氨基卤苄基膦酸二烃基酯，它们的结构均经过ＩＲ，３１ＰＮＭＲ，１ＨＮＭＲ等确证．     

关于烯烃的亲电加成反应机理与立体选择性

烯烃的亲电加成反应机理一般认为有两种可能历程。一种是通过生成环状正离子中间体进行的，通过这样的历程进行的加成反应是反式加成。另一种是通过碳正离子中间体进行的，它所得到的产物无立体选择性。     

用喂线法控制加钛生产含钛汽车齿轮钢技术

针对含钛汽车齿轮钢生产过程中加钛处理时经常出现的钛吸收率不稳定问题,开展了喂钛铁合金芯线法加钛的试验.结果表明:该工艺能提高钛的吸收率,平均吸收率达87.9%,而且钛吸收率稳定,工艺简便,处理时间短,仅3 m in左右,大大降低微调加钛的工艺时间,电耗和材料消耗大大降低,现场环境改善,污染降低.     

分散聚合反应中苯乙烯转化率的测定

用三溴络合物溴加成方法，研究苯乙烯分散聚合反应过程中单体转化率，研究结果发现，稳定剂聚乙烯基吡咯烷酮浓度对单体聚合反应转化率的影响很大，当稳定剂用量低于０．２ｇ／Ｌ时，苯乙烯的转化率很低，而当用量高于０．２５ｇ／Ｌ时，单体转化率大幅度提高，说明稳定剂既起到稳定成核的作用，还影响自由基的活性，增加苯乙烯浓度会提高单体转化率，介质的组成对单体转化率影响很大。     

恶性肿瘤骨转移性骨痛的放射性核素治疗概况

综述了^32P,^89Sr,^153Sm等放射性核素治疗骨转移癌骨痛的机制，疗效和副作用，是一种有效的治疗方法。     

Research on the disappearance causes of the Tenghualuo Site in Lianyungang,Jiangsu Province, China

With brilliant civilization during the transitional period from a original clan society to a state society in prehistory,the Neolithic Tenghualuo Site in Lianyungang was discovered by archaeological survey in 1989,which was titled as‘one of the nation’s ten great archeological discoveries in 2000’.However,the transgression and the anthropogenic environment deterioration have ever been employed to explain the abandonment of the site.Based on a dynasty framework established by the 14 C dating,and using the experimental methods such as micro-paleontology identification in foraminifera and charophytes, the content test of Rb and Sr,susceptibility analysis as well as granularity and sedimentary facies analysis,some researches on the sediments from the two exploration layers at Tenghualuo Site were conducted,and the following new findings have been gained:Firstly,foraminifera which are relevant to the marine environment were not found in the sediment layer,however,25 charales,which usually live in the freshwater environment,in 07LTT1 exploration samples were found.Among them,3 charales were found in the samples from the forth sediment layer below the late Longshan Cultural layer and 22 charates were from the second sediment layer above the late Longshan Cultural layer.Furthermore,5 plant seeds and 41 fungal spores,together with many carbonation holes,plant seed shells,as well as their roots and stems were also found in the second sediment layer above the late Longshan Cultural layer.Secondly,the cumulative probability curves of the sediments’granularity in both the last and its overlying culture intermittent layers have characteristics of three-phase river sediment curve,and the ratios between Rb and Sr are both quite high in samples from two layers sedimented during the disappearing time of the site.All above-mentioned evidences indicate that disappearance of the Tenghualuo Site was not related to the transgression.The late Longshan Culture of the site could be completely abandoned after a relatively long-ter     

超声辐射下氢氧化钾催化的Michael加成(英文)

超声辐射下 ,查耳酮与含有活泼亚甲基的化合物诸如硝基甲烷、丙二酸二乙酯和乙酰乙酸乙酯等 ,在氢氧化钾催化下进行Michael加成 ,产品收率为 75 %～ 98% .该法具有反应时间短 ,产率高的优点     

利用小麦5B效应引入外源基因的研究（Ⅰ）易位系的培育

ｄｕｒｕｍ小麦的代换系ｄｉ－ｓｕｂ５Ｄ（５Ｂ）与添加系ｄｉ－ａｄｄｅ４ｔｓ杂交，再用ｄｉ－ｓｕｂ５Ｄ（５Ｂ）进行回交，在自交后代中选育出了易位系１０３２。该易位系染色体数２ｎ＝２８，表现型为非蜡质。这一结果证明了在ｄｕｒｕｍ小麦中也可以利用５Ｂ染色体效应，通过诱发部份同源染色体间的配对，获得易位体。