静止介质中激波动力学的差分方法

介绍了一种求解激波动力学方程的差分方法,并用该方法计算了一系列激波绕射和反射问题,尤其是,完成了激波在凹圆柱表面和双劈表面反射的计算。计算结果表明,该方法不仅具有简便、快速、准确的优点,而且激波动力学中的shock-expansion和shock-shock能在计算中自动产生。     

多晶铜位向的彩色金相显示

本文介绍了显示多晶铜晶粒位向的化学干涉膜法,确定了一种较为理想的侵蚀剂和侵蚀工艺,并对具体颜色所对应的位向,由{111}痕迹法进行了确定.     

A Chengjiang-type fossil assemblage from the Hongjingshao Formation （Cambrian Stage 3） at Chenggong,Kunming, Yunnan

A new Chengjiang-type fossil assemblage is reported herein from the lower part of the Hongjingshao Formation at Xiazhuang village of Chenggong,Kunming,Yunnan.The fossil assemblage,named as Xiazhuang fossil assemblage,yields predominantly soft-bodied fossils,including arthropods,brachiopods,priapulids,lobopods and some problematic taxa,with arthropods being the most dominant group.Preservation and composition of the fossil assemblage are very similar to the typical Chengjiang biota,which is preserved in the middle Yu’anshan Formation in the large area of eastern Yunnan.The associated trilobites demonstrate that the soft-bodied fossil assemblage belongs to the late Qiongzhusian in age(Stage 3,Cambrian),suggesting that the Hongjingshao Formation is probably a diachronous lithostratigraphic unit ranging from the upper Qiongzhusian to the lower Canglangpuan stages in eastern Yunnan.The fossil assemblage from the Xiazhuang area fills up the missing link between the typical older Chengjiang biota and the younger Malong and Guanshan biotas,making eastern Yunnan a unique area in the world to reveal the early evolutionary history of animals and palaeocommunity dynamics during the‘‘Cambrian explosion’’.     

平台NSMP中产品联动机制的设计

文章就当前的网络安全提出了一种安全管理平台方案．并对平台NSMP的安全性进行了分析．平台的联动依靠平台的策略机制来实现,策略机制包括策略管理模块、策略库等．     

12-硼钨酸钾掺杂聚苯胺的制备、表征和性能简

以过硫酸铵为氧化剂,采用化学氧化聚合法制备了12-硼钨酸钾（K5 BW12 O40·nH2O）与盐酸共掺杂的聚苯胺材料。通过傅里叶红外光谱分析、X射线衍射分析和电导率测试等手段研究了12-硼钨酸钾与苯胺单体的质量比（X）对掺杂聚苯胺结构和性能的影响,同时结合循环伏安测试研究了材料的电化学性质。结果表明,在掺杂过程中[BW12 O40]5-作为对阴离子进入到聚苯胺链上,其含量随着犡的增大而增多。进入分子链上的[BW12 O40]5-阴离子会影响材料分子链排列的有序程度,进而影响材料的导电性能。合成的新材料可作为新型的电化学活性材料。     

Treatment of Wastewater Containing Polyacrylamide Using Three Dimensional Electrodes

A method using three-dimensional electrode is applied to treat wastewater in oil fields, which contains polyacrylamide (PAM), for analogue. A best condition for electrolysis (I=1.0 A, t=90 min, c=0.1%, m=980 g,φ =5 mm, d=5.0 cm) has been determined, under which the COD removal efficiency reached 96.0%, COD containing in wastewater reduced to 64.3 mg/L from 1 622.9 mg/L, the figure before treatment. Three categories of PAM-containing wastewater in production practice have been treated with the COD removal ratios being 87.5%, 82.4% and 84.7% respectively. Presence of H_2O_2 and·OH are detected by means of Ti(Ⅳ)-5-Br-PADAP technique and colorimetry respectively. The concentration is positively proportional to the COD removal ratio and increases in accordance with increment of time of electrolysis and current.     

适用于移动计算环境的反射式中间件

提出了一个适用于移动计算环境的反射式中间件．该中间件通过结构反射和行为反射实现了中间件平台的配置及重配置,通过元数据模型和事件的订阅／发布机制实现了说明式的反射,并提出了基于博弈论的竟价模型来解决重配置过程中的冲突,使得中间件得以适应复杂多变的移动运行时的环境。     

一类图簇的Hamilton图的研究

通过研究图的伴随多项式的因式分解,得到了若干构造性的Hamilton图簇.     

黑斑蛙Sox基因的PCR扩增

以特异扩增人SRY基因HMG -box保守区的一对引物 ,扩增了黑斑蛙的Sox基因 (SRY -boxgene) .结果表明 ,雌雄黑斑蛙个体均扩增出了两条带 ,大小分别为 4 50bp和 90 0bp ,显示了Sox基因在黑斑蛙雌雄个体间无性别特异性 ,且可能含有内含子 .本文为探讨黑斑蛙的性别决定机制及Sox基因的进化提供了分子资料 .