摘要：本文研究了无穷个m增生算子公共零点的迭代构造问题.利用Banach极限的技巧和新路径收敛定理,证明了新构造的迭代序列强收敛到无穷个m增生算子的公共零点的结论,同时证明了这个公共零点还是一类变分不等式的解.利用Visual Basic 6编程,进行了计算试验用以验证迭代构造的合理性.迭代参数的限定条件更弱且采用了新的证明技巧,推广和补充了以往的相关研究成果.

摘要：近几年隧道工程向长大深、多场多相耦合方向发展,隧道在施工和运营时极易诱发结构失稳病害。针对山岭隧道、水下隧道和城市地铁隧道阐述隧道工程结构模型试验系统设计的研究现状,并指出目前存在的相关问题。结果表明:山岭隧道模型试验考虑了隧道穿越不良地质体,承受高地应力、高岩溶水压力和高地震动等荷载条件,但受装置尺寸限制,无法模拟围岩高地应力水平。山岭隧道模型试验以平面应变模型为主,缺乏大型真三维应力条件下多种错动形式的活化错动断层的模拟。水下隧道模型试验已实现稳定的高水压力加载,但仍无法实现应力场与渗流场耦合的真三维水下环境模拟且试验箱可视性较差,仅能通过洞口涌水量表征隧道的渗透水状态,无法得到围岩内部变形规律。城市地铁隧道运营时一般受列车动荷载、路面荷载、邻近施工扰动的共同影响,目前模型试验通常考虑单一荷载下隧道的振动响应,且往往忽视了管片接缝和裂隙等结构特征,需要设计新颖、高效的局部加载装置,得到管片薄弱环节的极限变形特征,保障地铁运营安全。最后,总结隧道工程模型试验遇到的瓶颈问题,提出需要研制透明相似材料改善模型内部可视化功能,针对高地应力条件下不良地质条件研制尺寸可拓展的三维静动耦合加载模型试验系统,并结合微型低功耗无线监测传感元件与三维可视化结果展示平台,建立适用于复杂环境中的隧道工程结构模型试验系统。

摘要：针对锻造操作机动作功能多、系统复杂、多领域模型耦合的特征,基于虚拟样机技术对锻造操作机的机械系统和液压控制系统进行了建模。采用模型接口的方法搭建了锻造操作机多学科领域协同仿真模型。研究了锻造操作机大车行走、夹钳旋转和夹钳平行升降3个主要动作的稳定性、准确性和快速性。结果表明,该方法可行,对于锻造操作机液压控制系统的优化设计具有一定的理论指导意义。

摘要：提出了一个求解函数优化问题的高效演化算法,其设计思想由混合选择策略与分类变异策略构成。该算法使用锦标赛选择、轮盘选择相结合的混合选择策略,变异运算分为三类进行:对最好个体实施模式搜索,对适应值排名靠前的三分之一的个体采用柯西变异,而其它个体使用普通变异算子。针对15个测试函数的实验取得了相当好的效果,实验结果表明该算法不仅收敛速度快,而且所求得的解达到或者以相当高的精度逼近最优解。

摘要：本文研究表征了含有偶氮苯胺衍生物和不同取代链长苯甲酸的双元有机凝胶在多种有机溶剂中的凝胶行为。在20种溶剂中的凝胶性能测试结果表明是新型双元有机胶凝剂。实验结果表明，取代烷基链的长度在调控多种有机溶剂中的胶凝剂性能方面起着关键的作用。分子骨架中较长的烷基链有助于有机溶剂的胶凝。形貌考察表明这些凝胶分子随着溶剂的改变自组装形成不同的聚集体，如片状、褶皱、带状、点状等。光谱研究显示取决于分子骨架中不同的烷基取代链，凝胶中存在不同的氢键和疏水作用力。此外，由于烷基取代链的长度不同，这些有机凝胶可以自组装形成单分子或多分子的纳米结构。对于目前的有机凝胶的可能组装模型被提出来了。本研究工作对于设计新型纳米材料和具有特殊微纳米结构的功能纤维材料提供了新的思路。

摘要：[Objective] This study aimed to clone and analyze the cDNA of ATPase β subunit gene from Eleutherococcus senticosus.[Method] A pair of homologous primers was designed according to the chloroplast ATPase β subunit gene sequences of the known species;then the gene cDNA of *** were amplified by RT-PCR and compared with that of the known species;its structure was predicted finally.[Result] 1 099 bp of ATPase beta subunit cDNA of *** which encodes 366 amino acids was amplified by *** comparison and structure prediction showed that amino acids encoded by the ATPase beta subunit gene of *** shared the highest homology,up to 96.41% with that of Oryza *** the secondary structure,the protein contained 171 alpha helixes accounting for 46.72%,53 extended strands accounting for 14.48%,27 beta sheets accounting for 7.38% and 115 random coils which took up 31.42%.The amino acids 262-271 were the symbolic site of ATPase β *** whole peptide chain had no obvious hydrophobic region and was primarily confirmed as a hydrophilic protein.[Conclusion] The cNDA of ATPase β subunit gene cloned from *** in this study will provide reference for learning the effect of energy metabolism on secondary metabolism,structure and function of ATPase in ***.

摘要：The concept of relative t-designs for Q-polynomial association schemes is due to Delsarte(Philips Res Rep 32: 373C411, 1997). In this paper, we discuss the Fisher type lower bounds of tight relative 6-designs very explicitly for binary Hamming association schemes H(n, 2).

摘要：[Objective] The paper aimed to study the donkey GH gene features and functions.[Method] A pair of specific PCR primers was designed for cloning the coding sequence of the donkey GH gene from liver tissue.[Result] 706 bp fragment was got by RT-PCR *** sequence included a complete open reading frame and encoded 216 amino *** protein encoded by donkey GH gene had seven hydrophobic region,seven transmembrane regions and a signal peptide;it＇s secondary structure had α-helix and irregular curl and three-dimensional solution structure composed of 27-215 amino acids.[Conclusion] GH gene of donkey was very conservative in *** phylogenetic tree constructed basing on CDS sequence is consistent with the results of comparative morphology and comparative physiology.

摘要：[Objective] The aim was to provide molecular basis for the identification of species in the moss family Bryaceae by the construction of inter-simple sequence repeats （ISSR） fingerprinting. [Method] In order to seek standardizing PCR reaction set-up, an orthogonal design was used to optimize ISSR-PCR amplification system of Bryaceae in five factors （Mg2＋, dNTPs, primer, DNA template, Taq DNA polymerase） at four levels respectively. [Result] A suitable ISSR reaction system was obtained, namely： 20 μl reaction system containing 5 ng of DNA template, 0.2 μmol/L primer, 2.25 mmol/L MgCl2, 0.6 U of Taq DNA polymerase, 0.4 mmol/L dNTPs. Proper annealing temperature was found at 48-50 ℃.The above system and six ISSR-PCR primers were used for the PCR amplification of 14 samples from Bryaceae and the related species in Mniaceae. A total of 86 bands were amplified, all showed polymorphism. NJ cluster analysis showed a star-shaped cladogram. [Conclusion] The results manifested that ISSR fingerprinting could provide the appropriate degree of polymorphism at low taxonomic level, so it would be a useful tool to provide additional evidence for resolving taxonomic relationships at the species level of Bryaceae.