迁徙与交融--廿八都历史文化的人类学观察

廿八都镇是经浙江省人民政府批准的第一批省级历史文化名镇(历史文化保护区),位于浙江省最西南端的浙闽赣三省交界处,地扼浙江西部通往福建的交通咽喉,由于历史上一直是兵家必争的军事要地和商贸重镇,历代官兵滞留和商贾聚集构成了廿八都人口增长的主流.外来人口的大规模迁移形成了廿八都独特的聚落文化.从人口迁徙这一普遍的社会文化现象入手,运用文化人类学的理论与方法,着重观察研究移民迁徙和文化的交流与融合,观察和研究人口迁徙与文化交融形成新的聚落文化类型的基本历程,从而探索和揭示地域文化类型形成的基本规律.     

动态网络拓扑中的组件迁移机制

为了解决分布式系统中的动态负载均衡，容错，动态资源利用，隐式的颗粒度控制等问题，提出了一种透明的组件迁移技术，描述了在动态网络拓扑中有效地维持系统组件之间通信链路的组件迁移机制，同时考虑了对并发迁移情况的处理，对组件在不同文件系统中的迁移性能进行了测试和比较，提出的机制只用到较少的系统拓扑知识，在迁移过程中不阻塞进程，而只要求迁移组件本身停止计算，因而对非迁移系统组件的影响被减至最低。     

草玉梅与小花草玉梅的分布式样和迁移路线

研究认为草玉梅为中国 -喜马拉雅分布种 ,小花草玉梅为华北分布种 ,二者形成明显的地理替代分布格局 .小花草玉梅系由草玉梅演化而来 ,其迁移路线是由喜马拉雅和我国西南经黄土高原向北至河北北部和阴山一带 .这为内蒙古植物区系起源提供了证据 .     

采场瓦斯防治技术

合理、有效地根治采场瓦斯,防止采场瓦斯超限,是“八五”期间煤矿安全重点研究课题之一.本文根据采场瓦斯运移理论阐述了采场瓦斯超限的基本原因,论述了采场瓦斯根治的技术途径,并给出了在煤矿生产和科研实践中行之有效的根治方法.     

1,2,3,6—四氢化邻苯二甲酸酐异构化反应研究

本文在气相色谱分析的基础上,研究了1,2,3,6-四氢化邻苯二甲酸酐在各种路易士酸催化下的反应情况,并对以对甲苯磺酸为催化剂的反应进程提出了通过碳正离子中间体的可能机理.     

煤壁瓦斯流动的电算模拟

本文以菲克定律为基础,考虑到受采动应力影响的煤层变渗透性,建立了煤层瓦斯流动的数学模型,探讨其数值解,并通过实测结果说明该数学模型是可行的。     

乌喇忒部迁徙考

17世纪初，爱新国的强盛，内喀尔喀五部的降服，察哈尔部的西迁创造了阿鲁蒙古诸部向大兴安岭南麓西拉木伦河流域迁徙的条件。爱新国巧妙地利用时局条件，将阿鲁蒙古吸引到自己的势力范围，安置在西拉木伦河流域，部署了反对察哈尔的防线。入清以后，为了防范外喀尔喀和卫拉特蒙古，清廷又将四子部落、乌喇忒以及茂明安等阿鲁蒙古部落整体迁徙到阴山一带，从而形成了清朝外藩内蒙古乌兰察布一盟。     

Galectin-7

Galectins are a family of animal lectins with an affinity for β-galactosides. They are differentially expressed by various tissues and appear to be functionally multivalent, exerting a wide range of biological activities both during development and in adult tissue. Galectin-7, a member of this family, contributes to different events associated with the differentiation and development of pluristratified epithelia. It is also associated with epithelial cell migration, which plays a crucial role in the re-epithelialization process of corneal or epidermal wounds. In addition, recent evidence indicates that galectin-7, designated as the product of the p53-induced gene 1 (PIG1), is a regulator of apoptosis through JNK activation and mitochondrial cytochrome c release. Defects in apoptosis constitute one of the major hallmarks of human cancers, and galectin-7 can act as either a positive or a negative regulatory factor in tumour development, depending on the histological type of the tumour. Received 30 October 2005; received after revision 15 November 2005; accepted 25 November 2005     

HPLC测定包覆火药中的DNT及其迁移速率常数

用高效液相色谱法测定包覆火药中２，４－二硝基甲苯含量，样品用甲醇超声提取，在ＬｉｃｈｒｏｓｏｒｂＲＰ－１８，５μｍ柱上进行分析流动相甲醇－水（６０：４０Ｖ／Ｖ），检测波长２５４ｎｍ，方法的平均回收率９９．３％，相对标准偏差１．０％．关于迁移速率常数的估算，在恒温烘箱中，使包覆火药中２，４－二硝基甲苯加速向单基药膜扩散，间隔不同时间取出，测定其含量，进而按动力学方法得出常温（２５℃）下包覆火药中２，４－二硝基甲苯的迁移速率常数为１．４７×１０－９ｍ２／ｓ．     

Angiogenesis and signal transduction in endothelial cells

Endothelial cells receive multiple information from their environment that eventually leads them to progress along all the stages of the process of formation of new vessels. Angiogenic signals promote endothelial cell proliferation, increased resistance to apoptosis, changes in proteolytic balance, cytoskeletal reorganization, migration and, finally, differentiation and formation of a new vascular lumen. We aim to review herein the main signaling cascades that become activated in angiogenic endothelial cells as well as the opportunities of modulating angiogenesis through pharmacological interference with these signaling mechanisms. We will deal mainly with the mitogen-activated protein kinases pathway, which is very important in the transduction of proliferation signals; the phosphatidylinositol-3-kinase/protein kinase B signaling system, particularly essential for the survival of the angiogenic endothelium; the small GTPases involved in cytoskeletal reorganization and migration; and the kinases associated to focal adhesions which contribute to integrate the pathways from the two main sources of angiogenic signals, i.e. growth factors and the extracellular matrix.Received 13 February 2004; received after revision 25 March 2004; accepted 19 April 2004