聚合物溶液在地下连续墙施工中的试验研究

简要叙述了一种新型地下连续墙施工稳定液——聚合物溶液的研制及其与细分散泥浆性能的对比，这种新型聚合物溶液克服了目前使用的地下连续墙稳定液品种单一、性能较差的缺点，满足复杂地层的地下连续墙施工需要。同时阐述了这种稳定液的组成成分和性能及其主要特点。     

泥浆凝集剂凝集机理分析与选择

对泥浆凝聚与絮凝机理作了探讨，指出了常用的凝集剂，并通过比较指出了其选择方法。     

多种降阻材料搭配在变电站接地网改造中应用

在北海市三塘110KV变电站接地网系统改造工程实践中，通过不等长接地体技术及多种将阻材料搭配使用，克服了原接地网接地电阻值增大因素，并对变电站接地网改造和施工工艺进行设计。     

剥片高岭土的有机改性

用醋酸钾进行插层形成高岭土—醋酸钾复合体。通过X射线检测，高岭土层间距明显增大。将此复合体通过水洗，除去醋酸钾，高岭土即被剥片。剥片后高岭土粒径变小，但保持了高岭土的基本层状结构。用偶联剂对剥片后高岭土进行有机改性，形成高岭土有机复合物。“有效活化指数”的测定实验表明，利用此种方法制备的剥片高岭土有机改性效果很好。     

用石灰桩加固软弱地基

石灰桩作为一种技术可靠、经济快速的软弱地基加固方法已得到了广泛应用。本文介绍了武汉岩土力学研究所近一年来利用石灰桩处理软弱地基的成功经验。现场检测表明，对于单层和多层工业与民用建筑而言，采用石灰桩可以使软弱地基获得良好加固且满足设计要求。文中还对石灰桩的加固机理进行了简要分析。     

基于智能体的自适应入侵检测系统

提出了一种基于智能体技术的自适应入侵检测系统体系结构,将智能体技术和自适应模型生成技术应用于入侵检测系统中.智能体技术的应用解决了传统的集中式入侵检测系统的弊病,将任务处理和数据分布到网络各个结点上,通过各种智能体来协作完成入侵检测任务,充分利用网络和主机资源.而智能体与自适应模型生成技术相结合,采用遗传算法建立准确的数据模型,使得入侵检测系统能够自动配置和更新不同环境下的入侵检测模型,能够通过自我学习、自我改进来提高系统的入侵检测能力和适应能力.     

Experimental research on a new encapsulated heat-generating hydraulic fracturing fluid system

1 IntroductionFracturing plays an important role in increasingthe production and injection and enhancing the final re-covery of oil and gas. At present, the use of ahydroxypropyl guar gum, borate-crosslinked, hydraulicfracturing fluid systemhas become ext…     

A study on the long term periodicities among the X‐ray binaries: Two new superorbital periods

Long term behaviours of a few selected X‐ray binaries are studied on the basis of RXTE/ASM archive covering a period of ∼13 years of continuous X‐ray data. Two new superorbital periods seem to be revealed for the GX354‐0 and X Persei systems as 8.7 years and 345 days, respectively. Although the X Persei system has two strongest peaks in its power density spectrum at 15.7 years and at 345 days, the latter is much more plausible. The GX354‐0 system also has few additional periodicities appeared in different time intervals (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)     

Constraining jet/disc geometry and radiative processes in stellar black holes XTE J1118+480 and GX 339−4

We present results from modelling of quasi-simultaneous broad-band (radio through X-ray) observations of the Galactic stellar black hole (BH) transient X-ray binary (XRB) systems XTE J1118+480 and GX 339−4 using an irradiated disc + compact jet model. In addition to quantifying the physical properties of the jet, we have developed a new irradiated disc model which also constrains the geometry and temperature of the outer accretion disc by assuming a disc heated by viscous energy release and X-ray irradiation from the inner regions. For the source XTE J1118+480, which has better spectral coverage of the two in optical and near-infrared (OIR) wavelengths, we show that the entire broad-band continuum can be well described by an outflow-dominated model + an irradiated disc. The best-fitting radius of the outer edge of the disc is consistent with the Roche lobe geometry of the system, and the temperature of the outer edge of the accretion disc is similar to those found for other XRBs. Irradiation of the disc by the jet is found to be negligible for this source. For GX 339−4, the entire continuum is well described by the jet-dominated model only, with no disc component required. For the two XRBs, which have very different physical and orbital parameters and were in different accretion states during the observations, the sizes of the jet base are similar and both seem to prefer a high fraction of non-thermal electrons in the acceleration/shock region and a magnetically dominated plasma in the jet. These results, along with recent similar results from modelling other galactic XRBs and AGNs, may suggest an inherent unity in diversity in the geometric and radiative properties of compact jets from accreting black holes.