九嶷山隧道洞口浅埋段塌方处理及总结

以二广高速公路九嶷山隧道左洞洞口浅埋段坍塌事故为背景，全面分析了该隧道塌方形成的原因，提出针对性处理方案，总结了隧道在浅埋段预防坍塌的手段及当发生浅埋段塌方时的处置思路，为同类隧道工程施工积累了经验。     

唐山市抗震防灾资源合理配置的决策分析

文吧地城市抗震防为资源合理配置的决策分析方法进行了研究；对唐山市房屋建设的投入与５０年内各种不同强度地震作用下的损失进行了分析；探讨了唐山市房屋建设抗震设防的最佳投入；提出了唐山市房屋建设抗震防灾资源合理配置的建议。     

论高校处分权与学生权利救济制度

本文分析了我国现行高校处分权性质不明，学生权利救济途径不畅的主要原因是相关法律缺乏、立法严重滞后。为此笔者主张高校处分权应由高校行政处罚权取而代之，建立学生权利救济的申诉制度和行政诉讼制度，以此重构我国高校处分权与学生权利救济制度，并对其进行了论述和探讨。     

Residual compressive behavior of alkali‐activated concrete exposed to elevated temperatures

This paper reports the effect of elevated temperature exposures, up to 1200^°C , on the residual compressive strengths of alkali‐activated slag concrete (AASC) activated by sodium silicate and hydrated lime; such temperatures can occur in a fire. The strength performance of AASC in the temperature range of 400–800^°C was similar to ordinary Portland cement concrete and blended slag cement concrete, despite the finding that the AASC did not contain Ca(OH)₂ , which contributes to the strength deterioration at elevated temperatures for Ordinary Portland Cement and blended slag cement concretes. Dilatometry studies showed that the alkali‐activated slag (AAS) paste had significantly higher thermal shrinkage than the other pastes while the basalt aggregate gradually expanded. This led to a higher thermal incompatibility between the AAS paste and aggregate compared with the other concretes. This is likely to be the governing factor behind the strength loss of AASC at elevated temperatures. Copyright © 2008 John Wiley & Sons, Ltd.     

Partition of proteins in the aqueous guar/dextran two-phase system

The partition of proteins (bovine serum albumin, β-lactoglobulin, micellar casein) has been examined in the guar/dextran aqueous two-phase system. The influence of parameters like pH, ionic strength (NaCl), and polymer concentration has been investigated while the protein concentration was increased up to 2% w/w. For globular proteins (bovine serum albumin, β-lactoglobulin) the general trends of partitioning established in the literature with other systems like polyethyleneoxide/dextran were nearly verified. The dextran-rich bottom phase was found to be slightly more concentrated in protein than the guar-enriched top one. However, micellar casein displayed a different behavior, giving a more uneven partition and phase separation phenomena at concentrations above 0.5% w/w. This difference has been attributed to the larger size of the particle. Meanwhile, the modifications of the guar/dextran phase diagram have been investigated. It was shown that the addition of globular protein or micellar casein up to 2% w/w did not affect the thermodynamic features of this system.     

含油污水处理系统的改造与调试运行

该文介绍了对含油污水处理系统的改造情况 ,总结了调试与运行中的一些经验 ,对国内燃机电厂的含油污水处理工作具有参考价值。图 1     

Polymer-Induced incompatibility in the mixed micelle formation of cationic surfactants with bulky polar head groups

The conductances of tetradecyltrimethylammonium bromide (TTAB)+tetradecyl triphenylphosphonium bromide (TTPB) mixtures over the entire mole fraction range were measured in aqueous poly(vinyl pyrrolidone) (PVP) containing 1 to 10 wt% of PVP at 30°C. Each conductivity (κ) curve showed a single break corresponding to the mixed micelle formation in the presence of PVP over the whole mole fraction range. From the conductivity data, various micellar parameters in the presence of PVP were computed and discussed in terms of micelle-polymer interactions. The mixing behavior of TTAB+TTPB in pure water was close to ideal, whereas in the presence of PVP a significant degree of nonideality was sobserved that was evaluated by computing the mole fraction of TTAB in the mixed micelle state (x ₁) and the interanction parameter (β) by using the regular solution approach. The former is less than the value in the ideal state, and the latter is much greater, indicating the enhancement in the antagonistic mixing behavior of TTAB+TTPB in the presence of PVP. The results have been explained on the basis of an increase in the incompatibility between the monomers of TTAB and TTPB in the mixed state due to the steric hindrances created by the PVP upon adsorption at the micelle-solution interface. The results have also been further supported by comparing with those of structurally similar cationic binary combinations in the presence of PVP.     

铝锂合金无中间层扩展焊接工艺研究

概述了铝锂俣金超塑成形／扩散焊接技术的现状，研究了铝锂合金无中间层扩焊接工艺，通过选取适当的工艺参数和焊接前化学处理，使焊件获得较高的剪切强度。     

自动化装置在循环水处理方案中的应用

根据齐化化工公司循环冷却水系统的特点，采用了加酸、排污两个独立的自动化系统，合理的设计了加药系统。对原理加以详细描述，在合理性和经济性上给予肯定。     

数据流关键技术研究概论

在数据流管理系统(DSMS)得到广泛应用基础上,讨论了数据流处理模型、数据流管理系统等方面最新研究内容,对一些具体技术进行归纳和分析.