菱苦土稻草碎料纤维板的应用研究

从我国农业秸杆产量大，利用率低，木材供应紧张的现实出发，指出了研制稻草增强的轻质高强菱镁制品的意义。通过实验研究，探索了原材料配比对菱镁制品性能的影响；利用物理化学的新理论，新方法极有成效地改善了菱镁制品返卤泛霜的现象，研究结果对指导菱镁制品的生产、扩大其应用领域具有重要意义。     

重型工业主厂房和堆载仓库的地基补强化学灌浆

通过论述重型工业厂房和大面积地面堆载仓库对基产生的不良影响，介绍用水泥－水玻璃化学灌浆进行全面加固，具有快速，有效，经济等优点，值得推广使用。     

回采工作面上隅角瓦斯积聚的治理

介绍回采工作面上隅角瓦斯积聚的处理方法.     

物探技术在燕子山矿8918工作面前期准备工作中的应用

燕子山矿为了顺利开采8919工作面，作好前期准备工作，对其上的马脊梁矿和唐山沟小窑2号层采空区分布及积水情况进行了综合物探，通过对各种物探数据和物探异常的综合解释，对测区内的地质结构有了较为深刻的认识，达到了预期的目标。     

The role of Mn2+-rich hydrous manganese oxide in the accumulation of arsenic in lake sediments

Arsenic is present at high concentrations in the upper layer of Lake Biwa sediments and shows a depth profile similar to that of Mn. Adsorption experiments of As onto synthetic hydrous Mn oxide (HMO) in the presence of Mn²⁺ and the speciation of Mn in the sediment cores, suggest that the accumulation of As at the sediment surface results from post-depositional migration of arsenite in the sediment pore water followed by oxidation to arsenate at the sediment surface and adsorption onto Mn²⁺-rich HMO.     

泵送钢纤维混凝土在桥梁工程的配制及应用情况

从湖南省益阳市南县茅草街大桥的工程实际出发,着重论述怎样通过理论指导和试配实践来确定主桥桥面现浇层CF40泵送钢纤维混凝土的原材料和配合比,以及怎样进行现场泵送时的质量控制.     

通过控制泥龄实现亚硝酸盐型同步硝化反硝化

采用序批式活性污泥法处理人工配制的城市生活污水，通过控制泥龄成功地实现了亚硝酸盐型同步硝化反硝化，曝气过程中NO2^-N／NOx^-N值始终保持在84．48％以上，曝气结束时大约有80．39％的氨氮通过同步硝化反硝化途径被去除。在适宜的曝气量下，利用排泥的方法控制反应器内适宜的泥龄，可以实现稳定的亚硝酸盐型同步硝化反硝化。     

多元素衬值累加法在东昆仑克贡玛地区找矿的应用

克贡玛地区位于东昆仑哈日扎—那更银矿带中部延伸地段,成矿地质条件较为优越。为实现该区快速找矿突破,在初步总结成矿地质背景基础上,本文详细研究了该区水系沉积物测量数据结构特性。采用相关性分析、R型聚类分析2种手段进行数据分析处理,并利用多元素衬值累加方法编制了地球化学异常图,实现了多元素异常“一张图”。通过典型矿点对比,有效识别了研究区高背景区域和低背景区域异常变化趋势,优选找矿靶区13处。经过查证,证实9处为矿致异常,找矿成功率达69.2％,实现了该区快速有效找矿突破。     

Trace metals in the marine bivalve Macoma balthica in the westerschelde estuary, The Nertherlands. Part 3: Variability of the role of cytosol in metal uptake by the clams

Tellinid clams Macoma balthica were sampled every 2 months for 2.5 years at two locations from the Westerschelde estuary (The Netherlands) and submitted to in vitro short-term exposure to Cd, Cu and Zn. Total and heat-stable cytosolic metal concentrations have been measured before and after exposure to study the effects of the sampling season on metal uptake by the bivalve. We observed much higher uptakes of Cd and, to a lesser extent, Cu in winter than in summer, while Zn appears to be constantly regulated. These phenomena are amplified in the cytosol, especially for Cd, a non-essential element, for which the concentrations after exposure can reach 35–45 μg·g⁻¹ (dry wt.) in winter, but only a maximum of 0.5 μg·g⁻¹ in summer, all natural values being between 0.01 and 0.1 μg·g⁻¹ on average. The contents (μg) of the various elements, either at the total or at the cytosolic level, are not constant, hence showing that the seasonal body weight fluctuation of the clams (dilution or concentration effect) is not the only parameter responsible for the metal uptake variability. Furthermore, we have shown that the proportion of cytosolic metal is not constant, but increases with the absolute cytosolic concentration up to 35–40. Therefore, the cytosolic phase of the cells plays a growing role in Cd, Cu and Zn storage as long as their total concentration increases.     

公路堆载诱发型滑坡稳定性分析

依据上三公路1#滑坡的地质勘探剖面建立数值分析模型,进行弹塑性材料接触模型的数值模拟研究,研究了堆载诱发型滑坡变形破坏的特点,揭示了滑坡变形破坏发生、发展的力学机理。研究结果表明:在松散堆积体边坡上堆载,直接改变了边坡的稳定性和地下水的渗流条件,降低了坡体的稳定性,最终导致滑坡的发生。