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271.
Li Jiaquan Mi Zhifu Wei Yi-Ming Fan Jingli Yang Yang Hou Yunbing 《Mitigation and Adaptation Strategies for Global Change》2019,24(8):1483-1505
Mitigation and Adaptation Strategies for Global Change - Operators of coal-fired power plants with carbon dioxide capture and storage (CCS) can provide energy for carbon dioxide (CO2) capture by... 相似文献
272.
Lei Hou John D. Fortner Ximeng Wang Chengdong Zhang Lilin Wang Wei Chen 《环境科学学报(英文版)》2017,29(1):315-323
Accumulation of organic contaminants on fullerene nanoparticles (nC60) may significantly affect the risks of C60 in the environment. The objective of this study was to further understand how the interplay of nC60 formation routes and humic acid modification affects contaminant adsorption of nC60. Specifically, adsorption of 1,2,4,5-tetrachlorobenzene (a model nonionic, hydrophobic organic contaminant) on nC60 was greatly affected by nC60 formation route – the formation route significantly affected the aggregation properties of nC60, thus affecting the available surface area and the extent of adsorption via the pore-filling mechanism. Depending on whether nC60 was formed via the “top-down” route (i.e., sonicating C60 powder in aqueous solution) or “bottom-up” route (i.e., phase transfer from an organic solvent) and the type of solvent involved (toluene versus tetrahydrofuran), modification of nC60 with Suwannee River humic acid (SRHA) could either enhance or inhibit the adsorption affinity of nC60. The net effect depended on the specific way in which SRHA interacted with C60 monomers and/or C60 aggregates of different sizes and morphology, which determined the relative importance of enhanced adsorption from SRHA modification via preventing C60 aggregation and inhibited adsorption through blocking available adsorption sites. The findings further demonstrate the complex mechanisms controlling interactions between nC60 and organic contaminants, and may have significant implications for the life-cycle analysis and risk assessment of C60. 相似文献
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侯先颖 《中国环境管理干部学院学报》2011,21(2):36-39
根据城市绿化的特点和植物的功能,指出了在园林绿化中一些错误认识和不科学的绿化方式,强调应树立科学绿化观,通过严格管理、科学种养,在节约能源、资金、资源的基础上,保证园林绿化的观赏效果、生态功能和社会效益。 相似文献
276.
侯美玲 《中国环境管理干部学院学报》2013,(4):68-70
建设项目竣工环保验收监测中常常出现建设同环评和初步设计不相符、变更粉尘产污环节、环评文本遗漏重要敏感点评价、数据异常、工况条件不满足要求等问题,基于此提出了重新报批变更的工程内容,向环保主管部门说明变更情况,对遗漏部分进行补充评价并监测,对异常数据查明原因后科学剔除,以及按照实际工况进行监测等应对措施。 相似文献
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Bacterial abundance and diversity in snow of East Rongbuk,Laohugou and Hailuogou glaciers on the Tibetan Plateau were investigated through epifluorescence microscope and denaturing gradient gel electrophoresis.Cell abundance ranged from 4.0 × 10 3 to 290.2 × 10 3 cells/mL.The phylogenetic trees placed the 16S rRNA sequences in four major groups:Proteobacteria,Firmicutes,Actinobacteria and Bacteroidetes.Brevundimonas,Flavobacterium,Hymenobacter,Bacillus,Polaromonas,Rhodoferax and Streptomyces were widely distributed bacteria in glaciers from different cold regions.The remaining five genera of Hylemonella,Delftia,Zoogloea,Blastococcus and Rhodococcus were endemism,only recovered from our investigated glaciers.It is proposed that the three glaciers on the Tibetan Plateau provide a specific ecological niche for prolonging survival of diverse microbial lineages. 相似文献
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Yansong Hou Wei Liang Liping Zhang Shuiping Cheng Feng He Zhenbin Wu 《Frontiers of Environmental Science & Engineering in China》2011,5(1):84-91
The study of community composition of algae is essential for understanding the structure and dynamics of the aquatic ecosystem
and for evaluating the eutrophic level of the water body. A high-performance liquid chromatographic (HPLC) method based on
a reversephase C18 nonpolar column was developed for the main algal taxa, which includes cyanophytes, bacillariophytes, euglenophytes, dinophytes,
and chlorophytes. Based on the elution order using HPLC, 19 pigments were identified, and they were chlorophyllide a, 19′-butanoyloxyfucoxanthin, chlorophyll c
1 + c
2, phephorbides a, peridinin, methyl-chlorophyllide a, fucoxanthin, neoxanthin, violaxanthin, myxoxanthophyll, diadinoxanthin, diatoxanthin, lutein, zeaxanthin, chlorophyll b allomer, chlorophyll b, chlorophyll a allomer, chlorophyll a, and β,β-carotene. A comparison study of cell microscopic counts and accessory pigment analysis indicated that HPLC analysis
could be a useful tool for monitoring phytoplankton communities and their abundance. 相似文献