Structure quantitative map in application for AB2X4 system

Structure maps are constructed for AB₂X₄ (A = metal, B = three-valency element and X = O, S, Se, Te) system (>490 compounds). A way to improve the resolution of the maps is proposed. Crystal structure characteristic (symmetry) is represented on a quantitative scale (coordinate axe Z). The 3D structure diagram with approximating integral plane is constructed and a field of high symmetry compounds is specified with ion radii ratio R(A)/R(X) ≈ 0.60–0.85 and R(B)/R(X) ≈ 0.55–0.70.     

警察身体素质训练课的改革研究

良好的身体素质是组成公安战斗力诸因素的重要物质基础。为了促使警察把身体素质训练作为终身锻炼的行为,在警察培训教学中教授学员切合公安实践需要简单实用的教学内容和训练方法,培养自我学习和锻炼的能力,是警察培训身体素质训练课应解决的问题。     

The Research and Application of Prediction Control in Multi-variable Control Process

The modern industrial control objects become more and more complicated, and higher control quality is required, so a series of new control strategies appear, applied, modified and develop quickly. This paper researches a new control strategy-prediction control-and its application in Multi-Variable Control Process. The research result is worthy for automatic control in process industry.     

活性污泥生物吸附性能的研究

探讨了活性污泥生物吸附作用的影响因素。吸附性能随温度升高而降低,在20~30min之间,可达到吸附平衡,且温度越高,达到吸附平衡的时间越长;活性污泥对悬浮性有机物的吸附性能高于对溶解性和胶体性有机物的吸附;对高浓度污水吸附性能高于低浓度污水的吸附性能;抑制剂对污泥的吸附作用有影响。     

天津市水源水质特性分析与评价

针对天津市的水源情况,分析评价了1996-2005年10年期间滦河原水和黄河原水的水质变化特点.结果表明,天津市的水源水质普遍存在低温低浊、高藻、微污染的特点.采用Kmeans聚类法对水源水质进行水质分期,把滦河原水划分为3个水质期,黄河原水划分为2个水质期,并对每个水质期的水质特点进行分析和评价,对水厂运行工艺及参数的调整起到一定的指导作用.     

A Continuum Mechanics Approach for Crack Initiation and Crack Growth Predictions

Very often, different approaches are used for crack initiation and crack growth predictions. The current article introduces a recently developed approach that can be used for the predictions of both crack initiation and crack propagation. A basic assumption is that both crack nucleation and crack growth are governed by the same fatigue damage mechanisms and a single fatigue damage criterion can model both stages. A rule is that any material point fails to form a fresh crack if the total accumulated fatigue damage reaches a limit. For crack initiation predictions, the stresses and strains are obtained either directly from experiments or though a numerical analysis. For the prediction of crack growth, the approach consists of two steps. Elastic‐plastic stress analysis is conducted to obtain the detailed stress‐strain responses. A general fatigue criterion is used to predict fatigue crack growth. Compact specimens made of 1070 steel were experimentally tested under constant amplitude loading with different R‐ratios and the overloading influence. The capability of the approach to predict both crack initiation and the crack growth under these loading conditions was demonstrated by comparing the predictions with the experimental observations.     

浅谈色彩在多媒体课件中的运用

色彩的爱好是人类一种最本能、最普遍的美感,它对观看者的影响便是最为直接的。色彩作为第一视觉语言,在多媒体课件制作中的作用是字体与图像等其他要素所无法替代的。本文主要针对色彩在课件制作的运用方面存在的一些问题,提出具体和有效的解决方案。     

完善武钢-烧烧结矿质量的改造与实践

阐述了武钢一烧经过2001年改造后,着重从8个方面对质量进行完善的实践,并针对质量完善的现状提出了进一步提高质量所存在的问题.     

Performance of Alcohol and Safer Sex Change Rulers Compared With Readiness to Change Questionnaires.

As part of a larger intervention study, the authors hypothesized that change rulers created for alcohol and safer sex would be equivalent to longer questionnaires. Ninety-six male college students completed rulers and questionnaires for assessing behavior change readiness. Participants' scores on the rulers significantly correlated with their scores on the questionnaires (r = .77 for alcohol; r = .77 for safer sex). In both domains, the rulers outperformed the questionnaires in predicting behavioral intentions, suggesting that the rulers had at least comparable concurrent criterion validity. This finding is the first of its kind in the safe sex literature and suggests that quick assessments of readiness to change are possible. Because the rulers are a continuous measure, the results are consistent with the idea that the change process is continuous rather than a series of discrete stages. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

谈谈确定"停工检测点" "质量见证点"的方法

通过制造4台我国特大型非标冶炼回转炉的实践,以详实的实例,总结性地介绍了在特大型非标设备的制造中,怎样运用技术确定“停工检测点”、“质量见证点”,完成设备制造的成功经验。