浙江省主要类型土壤中元素的环境背景值

本文首次提供了浙江省主要类型土壤及其不同发生层次中的A_a、C_d、C_o、C_r、C_u、F、H_g、Mn、P_b、S_e、V和Z_n等13个微量元素的环境背景值系统数据,并研究了它们在土壤中的地球化学行为,从而为浙江省土壤环境质量评价、国土整治、环境污染监测等工作提供了重要的基础资料和依据。     

有机磺酸掺杂聚苯胺的光电性能

对十二烷基苯磺酸（ Ｄ Ｂ Ｓ Ａ） 掺杂的聚苯胺进行了光电性能测试,结果表明： Ｄ Ｂ Ｓ Ａ 掺杂的聚苯胺在光照射下,光生载流子明显增大;感光材料的加入有利于聚苯胺在可见光区的吸收,并增加其导电性。对 Ａｌ－ Ｐ Ａｎ － Ｄ Ｂ Ｓ Ａ－ Ａｌ 结构的介电弛豫研究表明,在 Ｄ Ｂ Ｓ Ａ 掺杂聚苯胺的薄膜中存在空间电荷极化现象。通过理论计算与测试得知,掺杂态聚苯胺的寿命为微秒级, 迁移率为１ ×１０ － ３ ～１ ×１０ － １ ｃｍ ２／（ Ｖ·ｓ） 。从聚苯胺的电导率与温度关系中得到该材料的活化能,并分析了掺杂态聚苯胺的导电机理。     

Hemispheric interactions are different in left-handed individuals.

In a previous study, N. Cherbuin and C. Brinkman (2006) showed that in right-handed participants, interhemispheric transfer time (measured with A. T. Poffenberger's, 1912, paradigm) was a significant predictor of the efficiency of hemispheric interactions (measured with a split visual field, letter-matching task). No effect was found for degree of handedness in this study. This was surprising because handedness has been shown to be associated with differences in the morphology and the structure of the corpus callosum, and cerebral anatomical lateralization, as well as functional lateralization both in behavioral and scanning studies. Because these findings were found in a large sample, but one limited to right-handed participants, the aim of the present study was to determine whether a similar relationship was present between interhemispheric transfer time and hemispheric interaction in left-handed participants (using identical measures) and to assess whether the analysis of a larger sample that comprised both left- and right-handed participants might reveal an effect of handedness. Results demonstrate significant handedness effects, suggesting that left-handed individuals tend to have more efficient hemispheric interactions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Selective flocculation of iron oxide-kaolin mixtures using a modified polyacrylamide flocculant

High molecular weight polyacrylamides were synthesized and successfully modified to contain up to 8·3% hydroxamate functional groups. The selective flocculation tests carried out on 1:1 iron oxide/kaolin mixtures using parent polyacrylamide, polyacrylic acid and the modified polyacrylamide, confirm the possibility of enhancing selectivity through introduction of iron chelating functional groups in commercially available polymers. Starting with a feed grade of 35% iron, 92% recovery with acceptable grade of 60% iron has been achieved using the modified polyacrylamide. NCL communication No. 4415     

一种良好可居性的住宅空间设计──昆明冶金研究院商住楼设计构思

根据本院将盖商住楼所处立交桥闹市区位置进行设计，力求创造具金融、商业和居住为一体的多功能建筑物，其特点为：底框结构；庭院布局；居住空间与户外空间相结合。     

离子交换纤维吸附净化有害气体的性能特点及研究现状

离子交换纤维是一种新型的功能性纤维，这种纤维可用来吸附净化有害气体。本文介绍了它吸附净化有害气体的基本原理及其性能特点和国内外研究现状。     

低本底测量用的6路~3He计数管电子学组合装置

本文介绍一个结构紧凑,对本底中子有良好屏蔽效果的多路中子探测装置。装置内有6路~3He计数管—前置放大器—主放大器—甄别器,一个求和电路和高压电源,每一路均有模拟信号和甄别信号输出。     

Nondeterministic dependencies in relations: An extention of the concept of functional dependency

In the present article, some special semantic integrity constraints—so called nondeterministic dependencies—are proposed. These dependencies can be regarded as stochastic extensions of functional dependencies. After some basic definitions, the concept of nondeterministic dependency is introduced. Examples are given and an implementation for a statistical analysis system is described. Some properties are discussed.