白腐菌生物膜的形成及其性能的研究

用生物流化床研究了白腐菌形成生物膜的条件、生物膜的活性及其稳定性，自腐菌生物流化床处理2，4-二氯酚的效果。结果表明，选择适合的水力停留时间，自腐菌可以形成生物膜，生物膜的活性高，稳定性好。在生物膜流化床中自腐菌不易流失，能维持较高的浓度，处理2，4-二氯酚的效率达到91．2％，为自腐菌的工程应用探索了一条新的途径。     

吸附变压器中的酸性组分新法初探

以粉煤灰为原料经过适当的物理化处理,制成改性粉煤灰,进上步增加其表面积,可作为一种新型高效吸附剂,用于吸附变压器油中酸性组分,取得了较理想的结果。     

A practical application of photogrammetry to performing rib characterization measurements in an underground coal mine using a DSLR camera

Understanding coal mine rib behavior is important for inferring pillar loading conditions as well as ensuring the safety of miners who are regularly exposed to ribs. Due to the variability in the geometry of underground openings and ground behavior, point measurements often fail to capture the true movement of mine workings. Photogrammetry is a potentially fast, cheap, and precise supplemental measurement tool in comparison to extensometers, tape measures, or laser range meters, but its application in underground coal has been limited. The practical use of photogrammetry was tested at the Safety Research Coal Mine, National Institute for Occupational Safety and Health(NIOSH). A commercially available, digital single-lens reflex(DSLR) camera was used to perform the photogrammetric surveys for the experiment. Several experiments were performed using different lighting conditions, distances to subject,camera settings, and photograph overlaps, with results summarized as follows: the lighting method was found to be insignificant if the scene was appropriately illuminated. It was found that the distance to the subject has a minimal impact on result accuracy, and that camera settings have a significant impact on the photogrammetric quality of images. An increasing photograph resolution was preferable when measuring plane orientations; otherwise a high point cloud density would likely be excessive. Focal ratio(F-stop) changes affect the depth of field and image quality in situations where multiple angles are necessary to survey cleat orientations. Photograph overlap is very important to proper three-dimensional reconstruction, and at least 60% overlap between photograph pairs is ideal to avoid unnecessary post-processing. The suggestions and guidelines proposed are designed to increase the quality of photogrammetry inputs and outputs as well as minimize processing time, and serve as a starting point for an underground coal photogrammetry study.     

炉水低磷酸盐测定中的还原剂研究

火电厂炉水中低磷酸盐测定多采用磷钼蓝法,但目前磷钼蓝法中使用的还原剂不甚理想。经过大量实验,在传统还原剂抗坏血酸的基础上,加入EDTA二钠盐及乙酸,其混合液作为磷钼蓝法中的还原剂。在λmax=810nm,磷酸盐含量在0．05～1．0mg／L范围内符合朗伯-比尔定律,其检测下限为0．029mg／L,RSD=0．347％,样品回收率为97．3％-104．1％,完全能满足火电厂炉水中低磷酸盐含量的测量。     

关于断裂力学基本问题的一个新解

利用新的方法研究了断裂力学的一个基本问题，即利用Ｓｃｈｍｉｄｔ方法重新求解了Ｌｏｗｅｎｇｒｕｂ研究的条状物体中的一个裂纹问题，这一解适用于任意厚度的条状物中的裂纹问题，从而拓展了Ｌｏｗｅｎｇｒｕｂ解的适应范围。     

一种语音／数据同帧传输新方法

本文提出了一种语音/数据同帧传输新方法。该方法对语音进行压缩处理,连续存放,收集无声期用于传输数据,与传统的语音/数据同帧传输方法相比,能明显提高信道资源利用率。网络实验表明,语音质量良好。     

一种新的图像单幅可视隐藏算法

提出了一种新的单幅图像可视隐藏算法。该算法可以将一幅二值图像“分存”在一幅分存图像中。为了降低可视密码技术中的恢复难度,提出了一种低精度型的可视密码技术。     

A new route of ferric ions rejection in a synthetic nickel leach solution

A new route of impurity rejection to remove ferric iron from a synthetic nickel leach solution was introduced, which simulated the chemical composition of a typical acid leach solution of nickel laterites under atmospheric pressure. The synthetic solution underwent a stepwise neutralization process, with each step adopting different pH value-temperature combinations. In a conventional nickel atmospheric leach (AL) process, the nickel loss could be as high as 10wt%, which was a longstanding issue and prevented this process from commercialization. The new impurity rejection route is the first step towards resolving this issue. The results show that, the best neutralization performance is achieved at the nickel loss of 3.4wt% in the neutralization scheme that employs ethylenediaminetetraacetic acid as a nickel stabilizer (pH: 1.3-3.5; temperature: 95-70℃).     

几何约束系统中冗余约束实时预报的新方法

针对参数代绘图快速求解问题，本文利用自由度分析、非线性代数方程、图论及矩阵理论，提出了一种在几何约束系统中实时预报冗余约束的新算法。     

略论新时期校园文化的发展点

在新时期──知识经济初见端倪的时期,校园文化将会受到很大的影响和冲击。提出对校园文化的发展点研究．旨在探求新时期校园文化的发展对策,以期大家来共同关注和研究这个十分有时代意义的重要课题。