蚕沙提取果胶水解环境研究

果胶的提取率和质量与水解的环境关系密切 .本文重点在蚕沙中提取果胶从产率和颜色方面对水解的环境进行一些定性和定量的研究 ,获知各水解介质采用 0 3 %的稀硫酸液、温度 70— 80℃ ,时间 1h、pH1 5 ,提取的果胶从质量和产率上较理想     

浅谈网络环境下印刷型文献的主体地位

章分析了印刷献在规模数量、学术价值、检索利用等方面的优势，阐述了印刷型献在网络环境下图书馆馆藏中的主体地位。     

基于网络环境的高职院校图书馆服务模式探究

阐述了现代高职教育对图书馆服务的要求,分析了高职图书馆网络服务中存在的问题,介绍了高职图书馆网络服务的基本内容。     

钢筋混凝土仿木构建筑在贵州建筑中应用的探讨

论述了古建筑的一些结构构造特点及新时期对古建筑的需求.将钢筋混凝土材料和木材的各种性能进行比较,得出用钢筋混凝土仿木构建筑比木构建筑具有更好的耐久性和耐火性.通过对贵州经济现状分析指出旅游业在贵州省经济中所占的比重及在旅游区修复古建筑的重要性.结合贵州省情及全球生态环境指出在贵州用钢筋混凝土材料替代木材的必要性.     

High precision topographic data on Lop Nor basin's Lake "Great Ear" ? and the timing of its becoming a dry salt lake

High precision elevation measurements using DGPS were carried out along three representative tran- sects for the "Great Ear" area, a dry salt lake within the Lop Nor basin. Results indicate that the Lop Nor basin is only 5.2 m deep and its lowest point occurs at the center of the "Great Ear". In addition, the basin is asymmetric - steeper in the southwest (0.19‰) and gentler in the northeast (0.09‰). Points along the same "Great Ear" ring were found to have an identical elevation value, but different when from different ones (lower towards the center). The spacing of the "Great Ear" rings was found to be closely related with the surface steepness. The closer the "Great Ear" rings are spaced, the steeper the ground surface, and vice versa. These findings support the argument that the "Great Ear" rings are the former shoreline trails left behind by Lop Nor water during the last few episodes of recession towards its total dry up. A comprehensive analysis of the high precision elevation data, historical accounts, aerial and satellite photographs and imagery, and official topographic maps of the study area suggests that the "Great Ear" area in the Lop Nor basin was incorrectly mapped as being covered by a great body of water on the 1963 topographic maps. A re-interpretation of the 1958 aerial photographs and newer remote sensing imagery indicated that the "Great Ear" ring structure was already in place in 1958 and it continued to appear on the subsequent remote sensing data without any major changes. It is estimated that lake water in the "Great Ear" area of the Lop Nor basin disappeared between the late 1930s and early 1940s.     

贵州凯里绿都小区的民族特色与生态环境

在民族地区开发、建设新小区,除了要考虑小区的现代生活环境、建筑功能、保温节能外,还应综合考虑小区的民族特色、绿色环保因素。以贵州凯里绿都小区建设为例,对民族地区小区规划、设计进行了探讨。     

中华传统爱国主义内涵探究

按照时代内容来分析,传统爱国主义可以划分为中国古代爱国思想和近代爱国主义两个阶段.争取中华民族的团结、融合和国家的统一,并巩固这种融合与统一,是古代爱国思想发展的主题;在近代历程中,传统爱国主义带上了强烈的救亡图强的时代特征.     

浅谈网络环境下高校图书馆信息资源建设

阐述了网络环境下高校图书馆信息资源建设存在的主要问题,探讨了网络环境对信息资源建设的影响,提出了信息资源建设的具体措施。     

当代中国青年应激问题研究

作者认为，引起个体应激反应的因素来自内部和外部两个方面．就当代中国而言，青年的应激反应主要是适应性反应．这种适应性反应的外部因素则集中表现在新的价值观念的冲突，竞争加剧，社会分配不公，生活节奏加快，家庭与学校的精神保健职能出现偏差．以及科学和技术的变革速度加快等六个方面．为了培养和提高青年的应激反应能力，作者提出了五个方面的措施，以指导青年建立适宜应激水平．     

Illustrations with Real Examples of Using Ecological Regulation Strategies Against Crop Pests in China

In this paper, a series of examples from China, including those using ecological regulation strategies successfully to keep crop pests under control and those making more damages of crop pests caused by wrong cropping systems, crop distributions or extensive cultivation, were given and analyzed. From these, two pieces of experience were enlightened as follows： the first, the refoms of cropping systems and crop distributions must be beneficial to pest control or at least not increase the damage of crop pests; the second, we should further clarify the relationship between population dynamics of pests and cropping system/crop distribution, the basis for correctly laying down the ecological regulation systems.