Tin Oxide and Carbon Composite （Sn6O4（OH）4/AG） as the Anode in a Lithium Ion Battery

A tin oxide and carbon composite （Sn6O4（OH）4/AG） with a Sn content of 0.15-0.30 was prepared by chemical deposition at normal pressures and temperatures. The structures of the artificial graphite （AG）, the Sn6O4（OH）4, and the Sn6O4（OH）4JAG were analyzed using X-ray diffraction. The electrochemical lithiation was investigated by measuring the galvanostatic charge and discharge ratio. The electrochemical capacities of the three materials during the first discharge were 310 mAh/g （AG）, 616 mAh/g （Sn6O4（OH）4/AG）, and 1090 mAh/g （Sn6O4（oa）4）. The discharge capacity of the Sn6O4（OH）4/AG was larger than the simple sum of the capacities provided by AG and Sn6O4（OH）4 with the same content. The cyclic performance of Sn6O4（OH）4/AG was also better than that of Sn6O4（OH）4 for voltages of 0 to 3 V. The results imply that the interaction between Sn and C in Sn6O4（OH）4/AG is very strong and effectively inhibits the volume expansion of the Sn.     

Study on molecular interaction between NifA and NifL of Pseudomonas stutzeri A1501 by using the yeast two-hybrid system

Pseudomonas stutzeri AI501 (formerly Alcaligenes faecalis A1501), which was isolated from rice paddies in South China in 1980, can colonize tightly on rhizoplane of the host plants or invade the roots of plants for growth and nitrogen fixation. But A1501 can fix nitrogen only under the micro-aerobic and nitrogen-free conditions. The oxygen concentration and the availability of fixed nitrogen are therefore important factors in the regulation of nitrogenase biosynthesis of associative nitrogen-fixing bacteria.     

Functional identification of gene cluster for the aniline metabolic pathway mediated by transposable element

A convenient and widely applicable method has been developed to clone aniline metabolic gene cluster in this study. Three positive recombinant plasmids pDA1, pDB2 and pDB11 were cloned from genomic library of aniline degradation strain AD9. The result of aniline dioxygenase （AD） activity and catechol 2,3-oxygenase （C230） activity assay showed that pDA1 and pDB11 contain aniline dioxygenase genes and catechol 2,3-dioxygenase genes, respectively. The sequence analysis of the total 24.7-kb region revealed that this region contains 25 ORFs, of which 17 genes involve metabolism of aniline. In the gene cluster, the first five genes （tadQTA1A2B） and the subsequent gene （tadR1） were predicted to encode a multi-component aniline dioxygenase and a LysR-type regulator, respectively, while the others （tadD1C1D2C2EFGIJKL） were expected to encode metacleavage pathway enzymes for catechol degradation. The gene cluster was surrounded by two IS1071 sequences.     

经济人类学理论前沿综论

纵览经济人类学学说和学科发展历程,系统梳理和分析其中多次重要的前沿性探索,特别对全球化背景下经济人类学的理论拓展与重构,以及当前经济人类学界所关注的热点、难点问题,作了综合阐述与分析。     

锡偶联型高乙烯基SSBR/BR/NR共混性能研究

该文研究了高乙烯基锡偶联型SSBR、NR、BR3种胶料的相容性及共混硫化胶的性能。结果表明：SSBR、NR及BR在一定的比例下，具有较好的相容性，DMA曲线上只有1个玻璃化转变，当SSBR／BR／NR的比例为20：30：50时，共混硫化胶的 M300、断裂伸长率和断裂时的拉伸疲劳次数最大，力争陛能较好。SSBR／BR／NR3种胶料共混有效地改善了NR的耐磨耗性能和抗湿滑性能，而对滚动阻力影响不大。     

高乙烯基溶聚丁苯橡胶硫化体系的研究

该文研究了平衡硫化体系（EV）、传统硫化体系（CV）、半有效硫化体系（SEV）和有效硫化体系（EV）对锡偶联高乙烯基溶聚丁苯橡胶（HVSSBR）硫化胶性能的影响。结果表明：平衡硫化体系下HVSSBR具有较好的加工安全性，普通硫化体系具有较快的硫化速度。有效硫化体系的断裂伸长率、拉伸强度、撕裂强度、耐磨性、抗热氧老化性能最好。有效硫化体系能赋予胶料较好的物理机械性能和动态力学性能。     

浅谈音乐在太极健身中的作用

文章用文献法和逻辑分析法,结合音乐的特点、功能及太极拳的健身原理,去探求音乐在太极拳健身中的积极作用。在太极拳形成、发展和成熟的过程中,实现了其修身养性、延年益寿的价值追求。而音乐的参与,无疑为次画龙点睛,使其健身养性的价值得到更充分的实现。因此,在全民健身的今天,在普及太极拳的同时,重视音乐并使用音乐。我们的国粹——太极拳于其中占有一席之地具有极其深远的意义。     

一致凸Banach空间的一个新的特征性质

给出了Banach空间一致凸的一个新的充要条件:设λ,μ∈(0,1),λ μ=1,f:R R 是单调递增且可微的严格凸函数,X是Banach空间,则X是一致凸的当且仅当对任意ε>0,存在δ>0,使得当‖x‖≤1,‖x-y‖≥ε时,有f(‖λx μy‖)<λf(‖x‖) μf(‖y‖)-δ     

有限族多值Ф-伪压缩映象公共不动点的强收敛定理

通过引入一个新的具误差的修正的Ishikawa迭代过程，在Hilbert空间和一致光滑的Banach空间中，证明了此迭代系列强收敛于有限族多值西一伪压缩映象的公共不动点，所得结果改进和扩展了本领域中近期的一些相关结果．     

自适应圆阵抗干扰研究

讨论了自适应圆阵方向图抗干扰方面的特点，并与相同阵元的自适应线阵进行比较，结果表明圆阵的扫描范围更宽。能够全方位的接收信号，并且对空间信号的接收能力更强，克服了线阵本身所固有的抗干扰能力局限性的缺陷．所以圆阵本身有着线阵不可替代的优势，具有更好的抗干扰能力，所以可以在更广泛的领域得到应用．