Detection of Escherichia coli in wastewater based on enzyme immunoassay

This research describes a fast detection method on the basis of enzyme-linked immunosorbent assay (ELISA) for Escherichia coli in drainage of wastewater treatment plants. Optimized conditions such as the reaction format (sandwich or direct), the concentrations of diluted horseradish peroxidase (HRP)-E. coli conjugate, and anti-HPR antibody and pretreatment of E. coli were studied. Those results showed that the linear range of detection for E. coli was 10 cfu/mL-6 × 10⁴ cfu/mL. Compared with conventional methods, it is a convenient and sensitive detection method with low cost. Translated from Environmental Science, 2005, 26(5): 128–131 [译自: 环境科学]     

一种化纤废水处理的运行及分析

化纤废水含有各种难降解有机物，国内外一直未能提出一套较好的处理方法，本文介绍了一种化纤废水的研究，处理工艺及其主要设计参数以及运行管理，事实证明了这种方法是可行的，其具有处理效果稳产，产泥量少，具有一定的消泡作用等优点。     

显像管玻壳铅尘污染特性的研究

以石家庄市显像管玻壳厂排放的铅尘为研究对象，通过在该玻壳厂周围土壤布点采样，较系统地研究了铅尘在大气和周围土壤中的迁移和转化规律，研究表明，用高斯模式能成功地预测铅尘在大气中的迁移扩散规律，玻壳厂周围土壤表层铅含量较大值出现在当地年主导风向（SSE，N）下风向，铅在土壤中的分布主要集中在0－20cm的耕作层，在20－40cm深度范围内，铅含量呈下降趋势，最大降幅达50％。     

人工神经元网络对水处理系统建模适应性的研究

针对水处理系统的特点和研究中的难点，引入人工神经元网络的理论和思想，提出了水处理系统的神经网络分析方法．通过建立基于ＢＰ人工神经元网络的臭氧生物活性炭系统的模型，具体地考察了人工神经元网络对水处理系统建模的适应性，使水处理系统的研究迈向智能化和控制化．     

有机锡化合物测定方法研究进展

总结了有机锡化合物常用的测定方法，包括气相色谱－火焰光度法，气相色谱与原子吸收联用，气相色谱－微波等离子体发射光谱法，气相色谱－质谱法以及液相色谱与名种检测方法联用等。对样品前处理、衍生化方法、色谱分离及测定等也进行了讨论     

白腐真菌降解造纸废水的规律研究

在白腐真菌降解造纸废水的基础上，建立降解反应模型并推导出降解参数方程，并对其进行分析。     

A juvenile coelurosaurian theropod from China indicates arboreal habits

Here we report an unequivocal arboreal coelurosaur, Epidendrosaurus ningchengensis gen. et sp. nov. This juvenile coelurosaur's third manual digit is extremely elongated, distinctively different from that of other known dinosaurs and birds. It represents certainly a type of adaptation previously unreported from the Mesozoic although the exact function of the third manual digit is unclear. The relatively long forelimb, penultimate phalanx of manual digit II, and pedal penultimate phalanges, are interpreted as evidence for the arboreal habit of Epidendrosaurus. Because Epidendrosaurus is more similar to advanced birds in some arboreal features than to Archaeopteryx, we suggest that the initial appearance of tree-adaptation in theropods was probably not directly related to flight but to other functions, such as seeking food or escaping from predators. Electronic Supplementary Material is available if you access this article at http://dx.doi.org/10.1007/s00114-002-0353-8. On that page (frame on the left side), a link takes you directly to the supplementary material.     

Removal of copper from a copper sulphate solution using an ultrasonic-electrolysis process

The application of ultrasonic-electrolysis process for the removal of copper is studied.In the ultrasonic field cavitation acts as jets and agitates the solution and breaks the barrier layer between the cathode surface and the bulk of the solution.Thus increases metal deposition on the cathode surface.The results show that an ultrasonic field is successful for the removal of low copper concentrations in solution.     

Determination and discussion hydraulic retention time in membrane bioreactor system

Based on the microorganism kinetic model, the formula for computing hydraulic retention time in a membrane bioreactor system (MBR) is derived. With considering HRT as an evaluation index a combinational approach was used to discuss factors which have an effect on MBR. As a result, the influencing factors were listed in order from strength to weakness as: maximum specific removal rate K, saturation constant Ks, maintenance coefficient m, maximum specific growth rate ,ua and observed yield coefficient Yobs. Moreover, the formula was simplified, whose parameters were experimentally determined in petrochemical wastewater treatment. The simplified formula is θ= 1.1( 1/β -1)(Kｓ S)/KXo , for oetroehemical wastewater treatment K and Ko eaualed 0.185 and 154.2, resoectively.     

生物法处理低浓度有机废气的填料选择研究

采用不锈钢环、瓷环、陶粒、塑料环、海藻石、轻质陶块、煤渣等作为填料的试验研究，结果表明七种填料的净化性能顺序为：海藻石＞轻质陶块＞陶粒＞瓷环＞不锈钢环＞煤渣＞塑料环。