H3Si^＋（＋1,1）小分子配合物理论浅析

通过对H3Si^ 及H3Si^ 配合CO、N2形成“超分子”化合物的稳定构型进行全优化，得出H3Si^ 是平面型结构，H3Si^ AB是锥形结构，其中，Si-C,Si-N键接近于单键。计算得出H3Si^ 及其与CO、N2所得产物均具有较负的稳定化能，证实了H3Si^ 与CO、N2形成稳定化合物的可能性。分析Si-C,Si-N键的形成机理及键价轨道问题，探讨了其成键规律性。     

电阻应变传感器故障浅析

本文简要列举了电阻应变传感器几种典型故障,阐述了这些故障产生的原因及避免故障产生的方法     

电阻应变测量论述

通过电阻应变片对被测体结构的力、扭矩和压力的测量,可以分析其受力状况和工作状态,验证设计计算,确定工作过程和某些物理现象的机理.对设备的安全运行、自动控制及设计理论的发展等都有重要指导作用     

肿瘤细胞检测的福音——记中国科学院化学研究所研究员王树涛

专家简介:王树涛,研究员,博士生导师,1978年生于山东博兴。2000年和2003年于东北师范大学获得理学学士和硕士学位,2007年在中科院化学所获得理学博士学位,2007年到2010年在美国加州大学洛杉矶分校博士后研究,2010年3月入选中科院化学所"引进国外杰出青年人才计划"。率先提出"结构识别与分子识别"协同的生物识别粘附效应,并用于癌症检测,因此获2010年世界科技奖提名。曾获2006年中国重大科学进展,2008年中国科学院优秀博士论文(50篇),2009年全国百篇优秀博士论文提名奖,2010年世界科技奖(材料类)提名等;发表SCI论文70余篇,中国专利2项,美国专利2项;在多家国际著名杂志发表邀请综述4篇,英文专著2章;任Nature出版社亚洲材料杂志NPG Asia Materials副主编。     

半导体材料将走向“纳米化”

到2015年,我国将拥有多条45—90纳米的8英寸、12英寸生产线。2022年进入国际前列。不过随着集成度提高,硅晶片会遇到很多困难．例如芯片功耗急剧增加,极有可能将硅片融掉。以砷化镓（GaAs）、磷化铟（InP）等为代表的第二代半导体材料不断向硅提出挑战。     

塔河油田耐抗盐水平井堵剂优选及评价

本文针对目前塔河油田水平井堵水现状,优选、评价了凝结聚硅体水平井堵剂,并开展了性能评价研究。凝结聚硅体属有机硅类,具有较强的耐温耐盐性。评价结果表明:凝结聚硅体适应塔河油田油藏条件,并具有较好的矿场应用前景。     

Silicon＇s organic pool and biological cycle in moso bamboo community of Wuyishan Biosphere Reserve

Biomineralization of Si by plants into phytolith formation and precipitation of Si into clays during weathering are two important processes of silicon’s biogeochemical cycle. As a silicon-accumulating plant, the widely distributed and woody Phyllostachys heterocycla var. pubescens (moso bamboo) contributes to storing silicon by biomineralization and, thus, prevents eutrophication of nearby waterbodies through silicon’s erosion of soil particles. A study on the organic pool and biological cycle of silicon (Si) of the moso bamboo community was conducted in Wuyishan Biosphere Reserve, China. The results showed that: (1) the standing crop of the moso bamboo community was 13355.4 g/m², of which 53.61%, 45.82% and 0.56% are represented by the aboveground and belowground parts of moso bamboos, and the understory plants, respectively; (2) the annual net primary production of the community was 2887.1 g/(m²·a), among which the aboveground part, belowground part, litterfalls, and other fractions, accounted for 55.86%, 35.30%, 4.50% and 4.34%, respectively; (3) silicon concentration in stem, branch, leaf, base of stem, root, whip of bamboos, and other plants was 0.15%, 0.79%, 3.10%, 4.40%, 7.32%, 1.52% and 1.01%, respectively; (4) the total Si accumulated in the standing crop of moso bamboo community was 448.91 g/m², with 99.83% of Si of the total community stored in moso bamboo populations; (5) within moso bamboo community, the annual uptake, retention, and return of Si were 95.75, 68.43, 27.32 g/(m²·a), respectively; (6) the turnover time of Si, which is the time an average atom of Si remains in the soil before it is recycled into the trees or shrubs, was 16.4 years; (7) the enrichment ratio of Si in the moso bamboo community, which is the ratio of the mean concentration of nutrients in the net primary production to the mean concentration of nutrients in the biomass of a community, was 0.64; and lastly, (8) moso bamboo plants stored about 1.26×10¹⁰ kg of silicon in the organic pool made up by the moso bamboo forests in the subtropical area of China. Project (No. 30370275) supported by the National Natural Science Foundation of China