有机物分子结构与光催化氧化反应活性的关系

从正辛醇－水分配系数与Ｈａｍｍｅｔｔ常数，光催化氧化过程中的光解作用，表面活性剂的微环境效应及取代基的诱导效应等方面，探讨了有机物分子结构与其光催化氧化反应性之间的关系。     

复杂粘性土层深基坑挡土桩受力分析

针对目前桩锚式支护计算方法的局限性，对复杂土层中下端固定的锚定式挡土桩作了受力分析，并编写了计算机程序，适用于处理深基坑支护中的分层土(砂土、粘性土)、有超载、存在地下水等各种复杂土层。     

Internal circulating fluidized bed incineration system and design algorithm

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｐｒｏｃｅｓｓｏｆｍｕｎｉｃｉｐａｌｓｏｌｉｄｗａｓｔｅ(ＭＳＷ)ｉｓｏｎｅｏｆｔｈｅｍｏｓｔｓｅｒｉｏｕｓｉｓｓｕｅｓｉｎｔｅｒｍｓｏｆｅｎｖｉｒｏｎｍｅｎｔａｌｐｒｏｔｅｃｔｉｏｎ.ＰｒｏｃｅｓｓｉｎｇｏｆＭＳＷｗｉｔｈｏｕｔｆｕｒｔｈｅｒｄｉｓａｓｔｒｏｕｓｃｏｎｔａｍｉｎａｔｉｏｎｃａｎｂｅａｃｈｉｅｖｅｄｏｎｌｙｉｎｍｏｄｅｒｎｉｚｅｄｍｅａｓｕｒｅｓ,ｓｕｃｈａｓｉｎｃｉｎｅｒａｔｉｎｇａｎｄｅｎｅｒｇｙｇｅｎｅｒａｔｉｎｇｃｏｎｃｕｒｒｅｎｔｌｙ(Ｓｈｅｎ…     

过氧化氢催化氧化难降解废水的研究

文章以过氧化氢为氧化剂,以γ-Al2O3为载体采用浸渍法制得不同金属含量的九种催化剂进行催化氧化实验,并优选出以5.0%Co、2.5?(质量百分含量)催化剂CODcr去除率较好,并确定此催化剂在常温常压下,反应时间为30 min,pH=6,氧化剂用量为30g/L时,CODcr的去除率最高为83%,这样不仅提高了BOD5/CODcr值,而且有利于后续生化处理,减轻后续处理装置负荷.     

Sex-dependent obesogenic effect of tetracycline on Drosophila melanogaster deteriorated by dysrhythmia

Antibiotics have been identified as obesogens contributing to the prevalence of obesity. Moreover, their environmental toxicity shows sex dependence, which might also explain the sex-dependent obesity observed. Yet, the direct evidence for such a connection and the underlying mechanisms remain to be explored. In this study, the effects of tetracycline, which is a representative antibiotic found in both environmental and food samples, on Drosophila melanogaster were studied with consideration of both sex and circadian rhythms (represented by the eclosion rhythm). Results showed that in morning-eclosed adults, tetracycline significantly stimulated the body weight of females (AM females) at 0.1, 1.0, 10.0 and 100.0 µg/L, while tetracycline only stimulated the body weight of males (AM males) at 1.0 µg/L. In the afternoon-eclosed adults, tetracycline significantly stimulated the body weight of females (PM females) at 0.1, 1.0 and 100.0 µg/L, while it showed more significant stimulation in males (PM males) at all concentrations. Notably, the stimulation levels were the greatest in PM males among all the adults. The results showed the clear sex dependence of the obesogenic effects, which was diminished by dysrhythmia. Further biochemical assays and clustering analysis suggested that the sex- and rhythm-dependent obesogenic effects resulted from the bias toward lipogenesis against lipolysis. Moreover, they were closely related to the preference for the energy storage forms of lactate and glucose and also to the presence of excessive insulin, with the involvement of glucolipid metabolism. Such relationships indicated potential bridges between the obesogenic effects of pollutants and other diseases, e.g., cancer and diabetes.     

炼油污水气浮絮凝处理中试

气浮絮凝是炼油污水处理工艺中重要的一步 ,它是确保炼油污水生化处理顺利运行的关键 ,而开发和筛选优良的絮凝剂则又是提高气浮处理效果的保证。采用无机—有机复合絮凝剂进行炼油污水的中试试验 ,通过一系列条件试验 ,确定了复合絮凝剂投药剂量、投药间隔时间和投药方式 ,取得了令人满意的试验效果 ,CODCr的去除率 5 5 % ,石油类去除率 >75 % ,为后续的生化处理提供了合格的水质     

研究单位压边力值对板料成形性能的影响

主要介绍板料在拉深成形过程中单位压边力值对板料成形性能的影响。研究方法采用仿真技术 ,指出板料在成形过程中如按最初设定的单位压边力值进行成形 ,那么 ,板料成形过程中单位压边力值将逐渐增大 ,严重影响板料成形极限。如果采用控制板料在成形过程中压边圈下坯料的单位压边力值 ,将提高板料成形极限。其结论为生产现场提高板料成形性能和表面质量提供了一种可实施的方法。     

电热管焊接接头挤压裂纹的分析

针对电热管焊接接头挤压产生的裂纹 ,通过采用金相显微镜观察其金相组织并用直读光谱对原材料成分进行化学成分分析 ,排除了成分、焊接工艺规范等的影响。经过对挤压过程分析 ,发现应力集中点是产生裂纹的主要原因 ,并提出了改进的方法     

水中酚类有机污染物HPLC分析及其应用

超声辐照技术降解水中有机污染物，其降解效率的主平价需要简单、快捷和精确的分析方法。为此研究了5种优先控制酚类污染物的HPLC分离及定量分析方法，方法的定量范围为0.4-100mg/L，检测限介于0.34-0.79ng/μL。4－氯酚的超声降解实验表明，随着反应溶液中4－氯酚初始浓度的降低，降解效率明显提高，因此该方法适用于超声降解过程中酚类污染物的跟踪测定。     

环境工程设计质量保障体系探讨

以污水处理工程为例，阐明环境工程设计质量保障体系的构成，概述设计原则以及每一设计步骤所需注意的问题，对验证、确保设计质量的后续工作过程作了简要的介绍。