对华中网局大楼落雷的测量情况简介及初步分析

简单介绍了华中网局大楼雷击半导体消雷器的测量情况，并给出了初步分析。     

巯基棉富集-石墨炉原子吸收法测定天然水中痕量金

对影响金在天然水中准确富集和测定的诸因素进行了试验和探讨，提出了疏基棉富集-石墨炉原子吸收测定的方法．该方法具有富集倍数大，空白值低，灵敏度高，几乎无化学干扰的优点．检出限选0.07ng/L.     

炼铁废渣制取TGLZ橡胶补强填充剂补强机理的研究

针对目前橡胶填充剂炭黑价格上浮,提高了橡胶制品成本的情况,利用炼铁废渣研制TGLZ(涂敷高炉炼铁废渣)无机橡胶补强填充剂。通过炼铁废渣干燥、除铁、粉碎、分级、冷敷、冷却等工序制得成品。对TGLZ橡胶补强填充剂的补强机理进行研究。试验结果表明,通过320目筛的TGLZ及选用钛酸酯偶联剂作TGLZ的表面处理剂,都对橡胶有优良的补强作用。该补强剂的研制,既节约了炭黑资源,又解决了环境污染问题。     

粉末丁苯橡胶的中试研究

将丁苯胶乳(SBR)、预处理剂、多元隔离剂、复配型防老剂、脱盐水等，按配方加入7.8m^3凝聚釜中，在一定的温度下，喷入凝聚剂(一价金属盐溶液)。当凝聚过程出现明显絮凝时，再一次喷入凝聚剂(二价金属盐溶液)，待胶乳凝析完全后，升温并加入成型剂。经恒温处理的淤浆，降温排入淤浆槽，并加入防粘剂。淤浆经离心、洗涤、脱水，形成SBR滤饼，然后通过研磨机研磨，进入旋转闪蒸干燥器干燥，即制得粉末丁苯橡胶产品。产品收率超过90％，水分不超过1．5％，98．5％的产物粒径小于1.25mm。     

The effects of sex steroids on spatial performance: A review and an experimental clinical investigation.

Males typically surpass females in spatial performance, an outcome that may be linked to testosterone and estrogen. The authors (a) review physiological mechanisms, developmental periods, and past empirical work relevant to sex steroids' effects on human spatial performance and (b) report an experimental study of the role of actively circulating sex steroids in 55 adolescents being treated for delayed puberty (mean age 13.70 yrs). Sex steroids (stimulating early, middle, and late puberty) and placebos were given alternately over 21 months and spatial tests were given every 3 months. Spatial performance showed traditional sex differences but did not vary with levels of actively circulating sex steroids. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of glutamic acid shelled PAMAM dendrimers on the crystallization of calcium phosphate in diffusion systems

Second generation poly(amidoamine) (PAMAM) dendrimers were synthesized and peripherally modified with glutamic acid (PAMAM-MG) as a shell. The effect of the dendrimers on the crystallization of different calcium phosphate compounds was investigated in both double and one way diffusion systems. It was found that the crystals of calcium phosphate showed tape-like morphology in the presence of PAMAM-MG, and the crystals’ thickness and width decreased compared to those grown without dendritic molecules. Such a result might be due to the interaction of electric charges between dendritic molecules and octacalcium phosphate (Ca₈H₂(PO₄)₆·5H₂O, OCP), which led to the adsorption of PAMAM-MG in the 100 and 010 surfaces of OCP. Moreover, PAMAM-MG showed an affinity for gelatin, and it could cause the formation of amorphous calcium phosphate (Ca₉(PO₄)₆·nH₂O, ACP) at a concentration of 5 mg/mL of PAMAM-MG. These results suggest that PAMAM-MG could be used for regulating the morphology of OCP and changing the composition of minerals in gels.     

亚像素数字散斑相关测量的曲面拟合法研究

研究了亚像素数字散斑相关测量中整像素搜索窗口、拟合窗口、散斑尺寸等因素对曲面拟合法测量精度的影响.采用二元二次多项式曲面拟合方法,利用计算机生成的模拟散斑图像,对水平位移分别为0.1,0.3,0.5,0.7,0.9pixel的图像进行了研究.结果表明,最佳搜索窗口为31×31～51×51 pixels,最佳拟合窗口为3×3 pixels,散斑图的平均散斑尺寸为2 pixel时,能较容易地实现相对误差小于5%的目标.而在高斯噪声免疫力方面,0.9 pixel以上的位移具有较强的免疫力.在散斑相关测量精度要求不是很高(＞1 μm)的情况下,曲面拟合法是一种非常适合的方法.     

Performance on Piagetian horizontality and verticality tasks: Sex-related differences in knowledge of relevant physical phenomena.

College women consistently perform worse than college men on tasks devised by Piaget to assess children's horizontality and verticality concepts. To determine if these sex-related differences are due to inadequate knowledge of the behavior of water and plumb lines (performances) rather than to immature spatial concepts (competence), 80 male and 80 female college students in Study 1 received the tasks (a) with or without pictorial examples and (b) with or without a verbal rule concerning the relevant physical phenomena. As predicted, main effects for sex and rule were significant, although the pictorial example had no effect. Contrary to expectations, the rule did not lead females to perform as well as males. In Study 2, 80 male and 80 female college students received the tasks with or without the rule, but here the rule was presented more emphatically. Following the tasks proper, all Ss were asked to explain what rule (if any) they had used in answering. In the no-rule condition, males' and females' score distributions differed significantly, as did the types of explanations offered. In the rule condition, neither score distribution nor explanations differed significantly by sex. Results are consistent with a performance interpretation of females' difficulty on standard Piagetian tasks, and, taken with Study 1, demonstrate the importance of central rather than incidental presentation of the relevant information. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The facilitation of long-term memory improvement and operative development.

J. Piaget and B. Inhelder (1973) have reported that children's memories for pictures or events improve between early (1-wk) and late (several-month) recall sessions in conjunction with operative growth. Using the concept of verticality, the present study investigated (a) if an intervening operative training task would increase memory improvements, and (b) if exposure to the memory stimulus per se would enhance later operative performance. 97 3rd graders were randomly assigned to 1 of 4 groups—with or without operative training and with or without a memory task. At the end of the school year, all Ss were tested for operative level. The trained group showed significantly more memory progressions and fewer regressions than the untrained group on 1 of 2 memory stimuli. On the 2nd stimulus, performance was consistently high across children and recall sessions, and thus no differences were found as a function of training. Participation in the memory task enhanced later operative performance. Implications for Piagetian memory research are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

解读江苏省《混凝土多孔砖建筑技术规程》

本文介绍了江苏省工程建设推荐性技术规程《混凝土多孔砖建筑技术规程》编制中考虑的主要问题：介绍了规程编制组进行的混凝土多孔砖砌体力学性能、物理性能、受压构件承载力和墙体抗震性能的试验结果。