城市小区雨洪利用系统降雨产流规律研究

以北京市某建有雨洪利用系统的楼房小区为例,基于实测数据,对研究区内的降雨量、产流量、回灌量及相应过程进行统计与回归分析,得出老旧居民区雨洪利用系统建成后的降雨-产流、降雨-回灌之间的规律.研究结果可为类似小区雨洪利用系统建设提供技术支持和关键参数.     

三峡地区传统聚落形态和古民居建筑

三峡工程库区大量的各类古建筑,是三峡地区古代文明信息的实物栽体,包含了十分浓郁的地方文化特征,是极为珍贵的文物古迹.简要评述三峡地区垂直江岸布局、平行江岸布局、棋盘式布局和混合式等4类传统聚落形态的特征和5种古民居的建筑布局、主要结构类型以及建筑风格,为进一步揭示三峡地区古民居所蕴含的历史、艺术、文化价值,为研究三峡地区的建筑历史、社会经济发展以及人口与自然的关系,反映峡江地区古居民的建筑风格及与环境的协调关系提供管见.     

晋城市城镇生活节水潜力分析

随着城市化进程的加快,生活水平的提高,水资源供需矛盾日益突出,已成为制约经济社会发展的瓶颈。文中介绍了晋城市城镇生活用水现状及存在的问题,并对城镇生活节水潜力进行了分析,在此基础上提出了开展城镇生活节水的具体措施,为缓解水资源供需矛盾,促进经济社会发展提供了理论基础。     

活性自由基引发星形PMA黏度指数改进剂合成及其剪切稳定性研究

通过可逆-加成断裂链转移( RAFT)活性自由基聚合得到了主要成分为聚甲基丙烯酸酯类化合物的星形聚合物黏度指数改进剂,其中星形结构的臂数不小于3,其臂的分子量具有可控且分布窄的特点.通过圆锥滚子轴承法对其抗剪切性能进行了评价,结果显示所合成的星形聚合物黏度指数改进剂与组成类似的线性聚合物相比,在增稠能力相当时,所合成的星形聚合物具有优良的抗剪切能力;在增粘程度和抗剪切性能相当的情况下,只需要很少的加剂量.     

Limitations on optical sectioning in live-cell confocal microscopy

In three-dimensional (3-D) live-cell microscopy, it has been common to treat cells as having a constant refractive index (RI). Although the variations in RI associated with the nucleus and other organelles were recognized from phase- and differential interference contrast (DIC) images, it was assumed that they were small and would not affect 3-D fluorescence images obtained using widefield/deconvolution, confocal of multiphoton imaging. This paper makes clear that this confidence was misplaced. Confocal images made using backscattered light (BSL) to image the flat, glass/water interfaces above and below living microscope specimens should reveal these structures as flat and featureless. That the image of the interface on the far side of the cells is neither flat nor featureless indicates that the "optical section" surface can be profoundly distorted by the RI irregularities associated with the presence of nuclei and other subcellar structures. This observation calls into question the reliability of images made using any of the current methods for performing 3-D light microscopy of living cells.     

Characterizing multiple memory deficits and their relation to everyday functioning in individuals with mild cognitive impairment.

The authors evaluated multiple memory processes and explored their contributions to everyday functional limitations in persons with mild cognitive impairment (MCI). Participants included individuals with amnestic MCI, nonamnestic MCI, and healthy older adults. As expected, the amnestic MCI group performed more poorly than the control and nonamnestic MCI groups on a content memory measure. Both MCI groups, however, performed more poorly than controls on the noncontent memory measures of prospective memory, temporal order memory, and source memory. Informants also reported that the MCI groups were experiencing greater difficulty than controls completing instrumental activities of daily living (IADLs). Noncontent memory measures were found to make an independent contribution to IADL performances over and above that of content memory. These findings demonstrate that impairments in memory beyond the traditionally assessed content memory are present in individuals with amnestic MCI and with nonamnestic MCI. The results further show that these noncontent memory processes, which have been linked with executive functioning, play a role in supporting IADLs. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

浅析生态型居住区规划

从生态学的角度出发，以生态平衡和可持续发展为指导原则，研究和探讨了生态型居住区规划的理论与方法，以创造自然和人类健康共存的、高品质的生态住区环境，使居住区成为当代人和后代人良好的生存与发展基地。     

BDC引发苯乙烯均相聚合反应机理的进一步探讨

BDC引发苯乙烯的均相聚合反应是以活性自由基机理进行的;大分子自由基间的偶合反应及向大分子的链转移反应使聚合产物不带有活性端基;大分子链活性端基数的测定结果表明了这种失活性的存在。     

从商品住宅售价状况看天津居住空间分异现象

通过分析天津市市内六区商品住宅售价分布的情况，发现天津市居住空间分异现象已经初见端倪，就此对其特征及产生原因进行了综合研究，探讨居住空间分异的机制，并且寻求解决途径与方法，展望天津市居住空间的演化趋势。     

住宅室内空间环境优化的设计研究

通过对新世纪居住模式变化和特点的研究,分析了住宅室内各空间的需求变化,进而提出了各功能空间环境优化的要点和方向,以便为居民创造更好更具人性化、舒适化、可持续的住宅室内空间.