A fragment constant QSAR model for evaluating the EC50 values of organic chemicals to Daphnia magna.

The quantitative relationship between the median effective concentration (EC50) of organic chemicals to Daphnia magna and the number of molecular fragments was investigated based on experimental EC50 values for 217 chemicals derived from the literature. A fragment constant model was developed based on a multivariate linear regression between the number of fragments and the logarithmically transformed reciprocal values of EC50. Functional correction factors were introduced into the model. The model was verified using an independent set of randomly selected data. The mean residual of the final model was 0.4 log-units. The robustness of the model was discussed based on the results of three jackknife tests.     

某铀矿工人头发中总α,总β,铀,钍放射性水平的调查

本文对某铀矿职业工人和非职业工人头发中的总β、总α放射性水平和铀、钍含量进行了分析测定.结果表明,该矿工人体内铀和钍的蓄积量均在正常放射性本底水平范围内,从头发中检验未观察到工人体内铀、钍放射性水平有明显的升高.     

海洋现代沉积速率~（210）Pb－~（210）Bi法的射线测定研究

本文主要介绍了用~（２１０）Ｐｂ─~（２１０）Ｂｉ法测定海洋现代沉积速率和数据处理方法的研究。该方法测定的结果与~（２１０）Ｐｂ─~（２１０）Ｐｏ法和阴离子交换－ＥＤＴＡ纯化－硫酸钡镭沉淀－α计数法（简称~（２２６）Ｒａ法）以及厦门大学海洋系经研究改进的分离、纯化~（２１０）Ｐｂ的离子交换法的测定结果相当吻合。     

关于农业污染纠纷综合处理的思考

揭示了农业污染纠纷的内涵,提出了处理农业污染纠纷的４个“支撑点”,即运用农业技术先行界定,运用监测数据科学鉴证;运用因果关系逻辑推定,强化环境管理,疏通综合处理渠道等。     

石材废水集约化处理工程实例

介绍了一个石材废水集约化处理的成功实例，分析、总结了混凝沉淀法处理石材废水的可行性及注意事项，并通过比较得出石材废水集约化处理较分散治理具备明显优势的结论。     

Pulse cleaning flow models and numerical computation of candle ceramic filters

ＩｎｔｒｏｄｕｃｔｉｏｎＣｌｅａｎｉｎｇｔｈｅｆｉｎｅｐａｒｔｉｃｌｅｓｉｎｈｉｇｈｔｅｍｐｅｒａｔｕｒｅ (450℃ -950℃ )ａｎｄｈｉｇｈｐｒｅｓｓｕｒｅｃｏｎｄｉｔｉｏｎｃａｎｅｎｈａｎｃｅｔｈｅｔｈｅｒｍａｌｅｆｆｉｃｉｅｎｃｙｏｆｃｌｅａｎｃｏａｌｔｅｃｈｎｏｌｏｇｉｅｓｓｕｃｈａｓＩＧＣＣｏｒＰＦＢＣ .Ｒｉｇｉｄｃｅｒａｍｉｃｆｉｌｔｅｒｓｏｆａｖａｒｉｅｔｙｏｆｓｔｒｕｃｔｕｒｅｓａｒｅｕｎｄｅｒｄｅｖｅｌｏｐｍｅｎｔｉｎｐｒｏｇｒａｍｓａｒｏｕｎｄｔｈｅｗｏｒｌｄ ,ｗｈｉｃｈｃａｎｆｉ…     

煤矸石制取聚羟基氯化铝的研究

介绍了用煤矸石制取聚羟基氯化铝的方法,研究了酸浸、调整盐基度等过程的最佳工艺过程。     

Shell渣油造气工艺的环境保护

介绍了Shell渣油造气工艺过程中的碳黑，石脑油污染，微口废水池导致硫化氮，一氧化碳，碳黑的污染及渣油泵检修带来的渣油污染，以及为保护环境消除污染而采取的技术改造措施。