生态系统与人类福祉:工商业的机遇与挑战

工商业在两个方面与生态系统和生态系统服务相互联系：它们使用各种服务。同时促成生态系统的变化。“千年评估”发现。评估涉及的生态系统服务中。有2／3的服务功能正在退化或被人们以非持续的方式利用。这对整个世界来说具有普遍的严重后果，它将从三个主要方面影响工商业。     

二十一世纪大型炼油厂给排水系统节水设计

分析了我国炼油厂环境污染存在的问题，提出了21世纪炼油厂给排水系统节水的具体措施。     

黄河岸边土壤中类二(口恶)英类多氯联苯污染现状及风险

研究了全黄河范围内40个国家重点控制断面岸边土壤样品中类二噁英类多氯联苯(dioxin-like polychlorinated biphenyls,DL-PCBs)的污染现状,并利用毒性当量法和健康风险评价模型定量描述黄河岸边土壤中DL-PCBs对沿岸居民的毒性风险、致癌风险和非致癌风险.结果表明,黄河岸边土壤中各采样断面岸边土壤中ΣDL-PCBs的含量(以dw计,下同)范围为:0.37~7.17 ng·g~(-1),均值为0.38 ng·g~(-1).毒性风险计算表明,黄河岸边土壤中DL-PCBs的毒性当量范围为:0.00~30.31 pg·g~(-1),均值是13.63 pg·g~(-1),基本不会对沿岸居民产生毒性风险;健康风险模型计算表明,黄河岸边土壤中DL-PCBs对儿童和成人的致癌风险、非致癌风险均未超过美国EPA规定的限值,基本不会产生明显的健康风险.相比而言,黄河中游沿岸居民更易受到DL-PCBs危害.     

Lobar holoprosencephaly: prenatal MR diagnosis with postnatal MR correlation

Holoprosencephaly is a congenital anomaly characterized by lack of cleavage of the prosencephalon. Although, relatively rare, it is the most common anomaly that involves both the brain and the face. Prenatal diagnosis of this anomaly using ultrasonography, particularly of the less severe forms, is difficult. Magnetic resonance imaging has recently become an important complement to US in prenatal diagnosis of CNS anomalies. We herein report a patient in whom, at 23 weeks of gestation, US suggested agenesis of the corpus callosum and in whom, at 24 weeks of gestation, MRI correctly diagnosed lobar holoprosencephaly, which was confirmed by a postnatal MRI at 3 weeks of age. Copyright © 2005 John Wiley & Sons, Ltd.     

Dandy – Walker syndrome and corpus callosum agenesis in 5p deletion

5p deletion syndrome commonly known as cri du chat is well described in affected neonates with catlike cry and hypotonia. Karyotyping will usually show a deletion of the short arm of one chromosome 5 with variable breakpoints. Only a few cases have been reported prenatally, and the fetal form of the syndrome has not been clearly individualised. We report a new case of 5p deletion syndrome diagnosed prenatally in association with Dandy–Walker syndrome and agenesis of the corpus callosum. Other brain anomalies have been reported previously, but this unusual association suggests the use of a specific probe in the investigation of these malformations. Copyright © 2005 John Wiley & Sons, Ltd.     

转制社区环保管理中存在的问题及对策——以广州市黄埔区为例

转制社区作为城市化过渡阶段的新生儿,其环保管理工作任重道远。该研究以广州市黄埔区作为对象,发现当前转制社区环保管理工作中普遍存在着居民环保意识不强、环保设备缺乏、管理部门职权不明确、执法力度不够和社区干部素质偏低等问题,针对此类问题,深入思考其原因及提出提高人口和社区干部素质、加大环保资金投入、社区自治等解决对策,,从而有利于改善人居环境,建立和谐社区。并且对今后转制社区中的环保管理工作提供参考。     

电袋复合型除尘器在电厂除尘改造中的应用

介绍晋北铝业自备电厂4台240t/h锅炉电除尘器改造成电袋复合型除尘器的方案、原理、运行情况,为国内燃煤电厂的电除尘器改造提供借鉴和参考。     

生活垃圾焚烧废气中二噁英监测采样研究

对当前国内生活垃圾焚烧废气中二噁英监测相关标准和技术规范的解读和实践操作后,认识到生活垃圾焚烧废气中二噁英监测采样的现状及不足.针对不同类型烟道,不同采样时间和不同采样时间间隔分别进行了研究.实验结果表明,同一稳定气流的排放源中,水平烟道和垂直烟道测试二噁英毒性当量排放浓度水平相当;满足监测采样量要求下,不同采样时间和采样时间间隔对二噁英监测结果并无显著差异,对此给出几点相应采样建议.