AP的安全制备（英）

1 IntroductionThe ammonium perchlorate ( AP)-based compositepropellant is currently the most widely used one becausethis propellant has good burning characteristics and me-chanical properties. One of the few serious drawbacks ofthe AP-based propellant is that its products of combus-tion, which include HCl, chlorine, and chlorine oxides,cause atmospheric pollution. Increasing concern for aclean atmosphere in recent years has resulted in a com-pelling need for developing a chlorine-free,enviro…     

浅议朱提商业街规划设计中的文化传承

以朱提文化商业街为例，从地域文化分析、规划设计原则、人文环境设计、建筑造型四方面探讨了设计中的文化传承问题，以展示现代商业街街区的文脉，体现城市的文化。     

Subsurface Characterization at Ground Failure Sites in Adapazari, Turkey

Ground failure in Adapazari, Turkey during the 1999 Kocaeli earthquake was severe. Hundreds of structures settled, slid, tilted, and collapsed due in part to liquefaction and ground softening. Ground failure was more severe adjacent to and under buildings. The soils that led to severe building damage were generally low plasticity silts. In this paper, the results of a comprehensive investigation of the soils of Adapazari, which included cone penetration test (CPT) profiles followed by borings with standard penetration tests (SPTs) and soil index tests, are presented. The effects of subsurface conditions on the occurrence of ground failure and its resulting effect on building performance are explored through representative case histories. CPT- and SPT-based liquefaction triggering procedures adequately identified soils that liquefied if the clay-size criterion of the Chinese criteria was disregarded. The CPT was able to identify thin seams of loose liquefiable silt, and the SPT (with retrieved samples) allowed for reliable evaluation of the liquefaction susceptibility of fine-grained soils. A well-documented database of in situ and index testing is now available for incorporating in future CPT- and SPT-based liquefaction triggering correlations.     

Do children's attention processes mediate the link between family predictors and school readiness?

The role of attention processes as possible mediators between family environment and school readiness was analyzed with data from 1,002 children and their families. Data on children's sustained attention, impulsivity, and school readiness (i.e., cognitive, achievement, language, and social development) were obtained at 54 months of age, and quality of the family environment was assessed throughout the first 54 months. Mediation tests showed that children's sustained attention partially accounted for the link between family environment and achievement and language outcomes. Impulsivity partially accounted for the link between family environment and achievement, social competence, and externalizing behaviors. The roles of sustained attention and of inhibition of impulsive responding in the relation between family characteristics and school readiness are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

镀锌钢带工艺技术改造

本介绍了将氰化钠镀锌溶液转换为氯化钾镀锌溶液的镀锌工艺过程，从工艺、健康、环保、成本等方面进行阐述。     

浅析建筑的生命力

时代赋予建筑可持续发展的概念,即有生命的建筑。建筑必须服从于总体空间环境,注重建筑的生态环境,重视建筑环境的物理条件,传承历史文脉,创作富有生命力的建筑作品。     

A distant-learning training module on the environmental design of urban buildings

The present paper aims to present a distant-learning training module that concerns the environmental design of urban buildings. The whole approach attempts to integrate topics that concern the design of urban buildings from various points of views, e.g. active and passive systems, automation systems, indoor air quality, economic aspects, energy and resources management. The package offers both printed and electronic material that gives the possibility to the students to study the various topics by using different educational methods. Additionally, the present package contains software tools that permit the students to examine real or hypothetical situations and to study further the influence of various parameters that concern the environmental building design.     

物理化学课程教学方法探讨

物理化学课程的教学有它自身的特点,根据其特点从多方面、多视角探索了物理化学课程教学的教学方法,并在实践中获得了良好的教学效果。