官厅水库的浸没评价和范围预测

官厅水库的浸没问题是平原型水库带来的典型的环境地质问题,具有较强的代表性．通过分析官厅水库浸没的原因,对水库浸没评价标准评价的确定方法进行了分析探讨．水库浸没范围的预测方法有相关分析法、水动力学法、水均衡法,但采用实地调查资料确定评价浸没标准是最好的方法．     

宁夏固海扩灌扬水十一泵站湿陷性黄土的工程特性

十一泵站黄土的湿陷程度属于中等-强烈,地基湿陷等级为Ⅳ级(很严重)。根据泵站湿陷性黄土的特点以及从经济合理性考虑,建议采用预浸水法处理黄土湿陷性地基。泵站建设过程中,地基处理使用了预浸水法处理,自建成后其运行状况良好。     

Cr4Mo4V轴承钢金属离子注入抗磨损、抗腐蚀性能研究

在氮气气氛环境下,采用金属等离子体浸没离子注入与沉积(MePIIID)工艺对Cr4Mo4V轴承钢表面进行强化处理,在高能钛离子轰击下,明显提高了Cr4Mo4V轴承钢近表层的抗磨损、抗腐蚀性能,最佳处理试件与未处理试件相比,摩擦系数由0.7～0.8降低到0.2～0.3之间。腐蚀电流密度减小了97%,腐蚀电阻增加近40倍,为轴承钢材料表面强化提供了一种新颖的改性方法。     

Transformations in cognitive science: Implications and issues posed.

Cognitive science currently offers models of cognition that depart substantively from those of information processing models and classical artificial intelligence, while it embraces methods of inquiry that include case-based, ethnographic, and philosophical methods. To illustrate, five overlapping approaches that constitute departures from classical representational cognitive science are briefly discussed in this paper: dynamical cognition, situated cognition, embodied cognition, extended mind theory, and integrative cognition. Critical responses to these efforts from members of the self-proclaimed cognitive science orthodoxy are also summarized. The paper then discusses ethical and epistemological implications arising from the “new” cognitive science and from critical responses to it and considers the broader importance of this literature for theoretical and philosophical psychology. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Mathematical model for describing of kinetics of tissue optical clearing

This paper describes the mathematical model for describing of light attenuation by different types of tissues at optical clearing. A comparison of experimental and calculated data showing a quantitative correspondence between these data was carried out. Parameters describing temporal dependence of optical transmission of a biological sample at immersion clearing are suggested. The article is published in the original.     

超微掺量水溶性高分子粉末在砂浆中的应用

通过0.005%~0.8%超微掺量水溶性高分子粉末聚环氧乙烷(简称NP)在砂浆中的应用,试验研究NP砂浆的拌合物沉入度,密度,抗压、抗折强度,粘结性能的变化规律及其粘结界面的微观形貌和结构。     

Photo-electret studies of pure and doped polystyrene films

The photoelectret properties of pure and acrylic acid (AA) doped polystyrene (PS) films formed by an isothermal immersion technique have been studied. The photoelectrets were formed by simultaneous application of u.v. radiation for a short time period (2–10 min) and d.c. electric field (3–18 V). The depolarization current was obtained by reilluminating the photoelectret with the same radiation. It is found that the photo depolarization current increases with polarizing voltage and is greater for the doped samples than for the undoped samples, prepared under identical conditions. The current increases with the dopant concentration and with duration of polarization. The total charge, found by integrating the depolarization current-time curve of doped photoelectrets, tends to saturation at a certain voltage value. Doped PS gives better photoelectrets.