开发区循环经济保障体系探讨

在分析我国目前实施循环经济所存在问题的基础上，以开发区为例提出了构建发展循环经济的保障体系，着重从组织、政策、技术、资金等方面进行了论证，为开发区按循环经济要求运行进行了探索，也为循环经济的顺利开展提供了科学依据。     

电磁轨道发射器的应用优势及技术难题

电磁轨道发射器是一种在脉冲强磁场环境中靠电磁力发射弹丸的直线加速器。介绍了电磁轨道发射器的基本结构和工作原理,归纳了它的优势特性及应用前景,并以美国电磁轨道炮的研究试验和发展现状为例,说明了电磁轨道炮有待解决的问题及下一步发展的方向。     

污水环境对芦苇生长性状的影响

对处于不同污水环境下的同种芦苇的生长性状进行了研究。结果表明长期生长在不同浓度COD、TP和TN的污水环境下的芦苇,在生长性状上已经出现了显著差异。污水环境中的COD和TP浓度的增大会显著阻碍芦苇的地径生长,而TN浓度的升高会促进芦苇的叶宽、株高和叶长的生长。     

关于我国城市污水处理产业化的分析和建议

城市污水处理再利是我国环境保护和水资源利用一项重要举措,现对我国城市污水处理产业化、市场化发展现状进行研究分析,对城市污水处理产业存在问题及其原因分析,并在法律政策、市场机制等方面提出相应对策和建议.     

植物废料应用于白腐真菌处理难降解有机污染物

综述了植物废料在白腐真菌处理难降解有机污染物反应体系中的应用优势以及研究现状,指出目前国内外相关研究存在的问题主要集中在植物废料的选材、投量、染菌以及废渣最终处理等方面,因此解决以上方面中的瓶颈将是今后植物废料固定化白腐真菌处理难降解有机污染物的主要研究方向。     

PCR-DGGE技术在内源细菌选择性激活过程中的应用

分子生态学技术的发展大大促进了人们对环境中微生物群落的认识,也为研究油藏微生物群落提供了一个新的工具.在模拟油藏条件下,应用PCRDGGE技术研究激活剂的注入对油藏微生物群落结构的影响,考察了激活过程中菌群结构的变化情况.分析了常压（1 MPa）和高压（10 MPa）下内源激活DGGE条带变化,进行了激活过程中的PCR序列分析,考察了激活不同阶段中的优势菌,将优势条带序列构建系统发育树,并对激活过程中主要内源菌所在类群分析.结果表明,高压条件下,优势菌群结构与常压下差异较大,常压激活和高压激活细菌类群数量变化差异显著;激活后,优势菌的种类有所增加,群落结构也发生了变化.激活前,优势菌是芽孢杆菌,而激活剂的加入使变形菌的在种类上得到增加.     

Chemical composition and size distribution of secondary organic aerosol formed from the photooxidation of isoprene

Photooxidation of isoprene leads to the formation of secondary organic aerosol (SOA). In this study, the chemical composition of SOA formed from OH-initiated photooxidation of isoprene has been investigated with gas chromatography/mass spectrometry (GC/MS) and a home-made aerosol time-of-flight mass spectrometer. Sampling particles generated in a home-made smog chamber. The size distribution of SOA particles was detected by a TSI 3321 aerodynamic particle size spectrometer in real time. Results showed that SOA created by isoprene photooxidation was predominantly in the form of fine particles, which have diameters less than 2.5 m. The obtained mass spectra of individual particles show that products of the OH-initiated oxidation of isoprene contain methyl vinyl ketone, methacrolein, formaldehyde, and some other hydroxycarbonyls. The possible reaction mechanisms leading to these products were also discussed.     

内蒙古自治区环境植物的利用

介绍目前在内蒙古自治区具有一定环境保护价值的环境植物资源,同时发掘其在环境保护之外的其他价值,可以在今后环境保护和园林绿化方面提供一定的借鉴,充分发掘这些植物资源的利用价值。     

太阳高度角对太湖水体真光层深度变化的影响分析

在假定水体表面为镜面、水体中无内光源、无非弹性散射的前提下,通过Kirk的辐射传输理论,研究了太湖水体中不同的太阳高度角对真光层深度变化的影响.结果表明,散射系数与吸收系数的比(b/a)值的大小是决定太阳高度角对真光层深度影响的关键因子,b/a315时,太阳高度角对真光层深度的影响较小,基本可以忽略.针对秋季太湖区域而言,在较短波段(400~540nm)b/a的值在整个湖区均较小,此时要考虑太阳高度角对真光层深度的影响;在较长波段(540~700nm), b/a的值在整个湖区均较大,可以不考虑太阳高度角对真光层深度的影响.     

Lysosomal responses and metallothionein induction in the blue mussel Mytilus edulis from the south-west coast of Iceland

It has recently been emphasized that high levels of inorganic and organic micropollutants (particularly organometals, POPs and PAHs) may be present in coastal waters at high latitudes, stressing the need to evaluate the effects of contaminants on marine organisms from sub-arctic zones. With this aim, specimens of the blue mussel Mytilus edulis were sampled in polluted and reference areas along the south-west coast of Iceland in July 2004. Samples were collected from the intertidal zone at three sites in Reykjavik harbour which are differently exposed to contaminants, and at three reference coastal sites, two located along the Reykjanes Peninsula and the third one on the northern part of Hvalfjordur fiord. Lipofuscin content, neutral lipid accumulation and lysosomal enlargement were evaluated in digestive cells from cryostat sections of the mussel hepatopancreas, and quantified by automated image analysis. Metallothionein induction was also determined in the same tissue. Results indicate that mussels from the inner part of Reykjavik harbour, which is the most sheltered and most influenced by extensive shipping traffic, were the worst affected, with the highest values in neutral lipids, lipofuscin and lysosomal swelling. At the other two harbour sites, mussels exhibited lower values, similar to those observed in organisms collected in Hvalfjordur fiord and in bay of Osar. Mussels from Kuagerdi had the lowest values.