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Effect of La^(3+)on Activities of Antioxidant Enzymes in Wheat Seedlings under Mercury Stres.

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Journal of Rare Earths 2002年第3期20卷 218-222页

作者：庞欣王东红彭安张福锁邢晓燕李春俭 Lab. of environ. Aquatic Chem. Res. Center. for Eco-Environ. Sci. Chinese Acad. of Sci. Beijing 100085 China

The effects of La(NO 3) 3 on the growth,activities of SOD,CAT and MDA content in shoots and roots of wheat seedlings under mercury stres. were evaluated by the nutrient solution culture experiment. The res.lts suggest that there is positive effect of La(NO 3) 3 on enhancing the activities of SOD,CAT,decrease of MDA content in shoots and roots of wheat seedlings during 0～5 d. But La(NO 3) 3 evens and cooperates with mercury when plants are too long under mercury stres.. Mercury inhibits the growth of wheat seedlings more grievously.

关键词： rare earths lanthanum mercury stres. catalase superoxide dismutase malondialdehyde Trticum aestivum

Influence of V2O5 Addition on Reduction of NO by C3H6 over Pt/V2O5/Al2O3 Monolithic Catalyst

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Journal of Rare Earths 2004年第Z1期22卷 175-177页

作者： Kang Shoufang res. Ctr. for eco-environ. sci. Chinese Acad. of Sci. Beijing 100085 China

Pt/V2O5/Al2O3 monolithic catalysts were prepared by wet impregnation method, and the influence of V2O5 addition on the catalytic activity for NO reduction by C3H6 under lean burn condition was investigated in detail. The res.lts show that Pt/V2O5/Al2O3 has better activity of NO reduction than Pt/Al2O3, adding V2O5 to Pt catalyst makes the temperature window of NO reduction shift further to a lower temperature region. The activity of NO reduction decreases and there is a similar degree of deactivation over the two catalysts in the pres.nce of SO2 in feed gas. Moreover, adding V2O5 to Pt catalyst res.lted in improvement of res.stance to SO2 oxidation, which decreases the emission of sulfate paniculate. Thermal aging treatment counteractes the promoting effect of V2O5 on NO reduction.

关键词： Diesel exhaust treatment NOx reduction SO2 oxidation V2O5 addition

ADDITIONAL Pres.URE LOSSES OF SOLID-LIQUID FLOW IN AN Osci.LATING PIPELINE

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Journal of Hydrodynamics 2002年第1期14卷 75-80页

作者： Xia, Jian-Xin Huang, Jia-Zhen cent. of environ. sci. Peking Univ. Beijing 100871 China

Manganese nodules on the ocean bed become attractive mineral res.urces because of its huge commercial benefits. In the last decades, a set of hydraulic lifting system with pipeline has been developed to mining these particles. It is inevitable that lifting pipe will osci.late due to its operation and the motion properties of the solid in the two-phase flow will be changed because of the osci.lating of pipe-line. The pres.ure gradient along the lifting pipeline was investigated with a series of experiments. At the same time, a new pres.ure drop prediction method on the basis of Lagrange simulation technique was worked out by use of an axial momentum balance and this method provides a way to predict the pres.ure loss of solid-liquid mixture. The res.lts show that compared with the fixed pipe transportation, the pres.ure gradient of the osci.lating pipe is greater than that of the fixed pipe because of the collision and unsteady friction between particles and the pipe wall due to the osci.lating motion of the pipe. Moreover, it is found that the prediction res.lts are in good agreement with those of the experiments.

关键词： Two phase flow Underwater mineral res.urces

Emission of landfill gas in Qingdao, China

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Journal of environ.ental sci.nces 1996年第3期8卷 292-297页

作者： Gao Jixi Shen Yingwa Cao Hongfa Shu Jianmin(Institute of ecology, Chinese res.arch Academy of environ.ental sci.nces,Beijing 100012, China) Institute of ecology Chinese Res. Acad. of Environ. Sci. Beijing 100012 China

A study on landfill gas emission in Qingdao,China was carried out. The res.lts showed that the generation of landfill gas with maximum methane concent.ation occurred several months after the refuse was disposed and the steady emission of landfill gas could remain two *** variation of landfill gas production was associated with temperature. In June, the emission of landfill gas rose gradually from morning to evening, but in September, it rose in the morning, and then fell in the afternoon. From June to August, the emission of landfill gas showed rising trend,but it declined quite quickly from September to December. In different seasons,the outflow rate of landfill gas varied from depth to depth in the refuse site. When earth temperature was higher in summer, the emission of landfill gas did not corres.ond with the depth of refuse sites, but when temperature fell in winter, and the temperature became a limited factor to the gas production,the outflow of landfill gas increased with increasing in depth of refuse piling.

关键词： landfill gas emission China

Quantification and control of res.rictive ecological factors in acidogenic de-sulfate bioreactor

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Journal of Harbin Institute of Technology(New Series) 2002年第1期9卷 32-37页

作者：王爱杰任南琪 res. cent. of environ. Biotechnol. Harbin Inst. of Technol. Harbin 150090 China

As an artificial microbial ecosystem, acidogenic de sulfate bioreactor has high efficiency of sulfate removal. The res.rictive ecological factors, including causing ecological factors, such as COD/SO 4 2- ratio and sulfate loading rate (Ns), and following ecological factors, such as pH value, oxidation reduction potential (ORP) and alkalinity (ALK) have significant effect on the ability and stability of acidogenic de sulfate bio reactor. Continuous flow and batch test were carried out to investigate the quantification and control of COD/SO 4 2- ratio, Ns, pH value, ORP and ALK in acidogenic de sulfate bioreactor supplied with molasses wastewater as sole organic carbon source and sodium sulfate as electron donor. It was demonstrated that In order to maintain high sulfate removal rate (SRR) of 80% to 90%, the res.rictive factors should meet all the requirement as follows: k COD/ SO 4 2-  ratio≥2.0, Ns≤7.5 kg (m 3·d) -1 ,pH=5.7～6.2,ORP=-320～-420 mV and  ALK= 1 500～2 000 mg/L.

关键词： acidogenic de sulfate bio reactor res.rictive ecological factors quantification control wastewater treatment

NUMERICAL STUDY OF THE INFLUENCE OF SURFACE ROUGHNESS OF CYLINDER ON FLOW STRUCTURE

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Journal of Hydrodynamics 2000年第4期12卷 1-7页

作者： Gao Li jin, Zhou Lian di [WT5BX]China Ship sci.ntific res.arch cent.r, Wuxi 214082, P.R.China (Received Jan. 14, 2000) China Ship sci. res. cent. Wuxi 214082 China

In this paper, the influence of surface roughness on flow structure was numerically studied. An adaptive numerical method, the fast vortex method was employed. A mathematical roughness, which comes from the no slip condition of vortex method, was introduced. The numerical res.lts indicate that the roughness has appreciable influence on the flow structure. The vortex shedding could be controlled if the forward multi layer boundary condition is exerted.

关键词： mathematical roughness fast multipole method (FMM) forward multi layer boundary condition back multi layer boundary conditiont

Model identification with BPNN on res.rictive ecological factors of SRB for sulfate-reduction

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Journal of Harbin Institute of Technology(New Series) 2002年第2期9卷 125-128页

作者：王爱杰任南琪 res. cent. of environ. Biotechnol. Harbin Inst. of Technol. Harbin 150001 China

The model of back-propagation neural network (BPNN) was pres.nted to demonstrate the effect of res.rictive ecological factors, COD/SO 4 2- ratio, pH value, alkalinity (ALK) and SO 4 2- loading rate (Ns), on sulfate reduction of Sulfate Reducing Bacteria (SRB) in an acidogenic sulfate reducing reactor supplied with molasses as sole organic carbon source and sodium sulfate as electron acceptor. The compare of experimental res.lts and computer simulation was also discussed. It was shown that the method of BPNN had a powerful ability to analyze the ecological characteristic of acidogenic sulfate reducing ecosystem quantitatively.

关键词： sulfate-reducing bacteria(SRB) res.rictive ecological factors back-propagation neural network (BPNN) model identification

Investigation of protein-styrene oxide adducts as a molecular biomarker of human exposed to styrene

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Journal of environ.ental sci.nces 2001年第4期13卷 391-397页

作者： Liu, S.-F. Fang, Q.-M. Jin, Z.-L. Rappaport, M.S. res. Cntr. eco-environ.ental sci. Chinese Academy of Sciences Beijing 100085 China

Hemoglobin-styrene oxide adducts in blood have been studied as a molecular biomarker of worker exposed to styrene. Determination of protein-styrene oxide adducts in different biological samples with modified Raney-Ni procedure is described in this paper. The following biological samples have been investigated: fres. rat blood reacted with styrene oxide in vitro: rat blood reacted with styrene or styrene oxide in vivo: vein blood from workers exposed to styrene in two factories. The data showed that there was a good linear dose-res.onse relationship between reacting dose of styrene oxide or styrene and amount of protein-styrene oxide adducts in both in vitro and in vivo experiments. For human samples, a dose-res.onse relationship between protein adducts and styrene exposure can be found in glass fiber factory, but not in piano manufacture plant.

关键词： Blood Drug dosage Glass fibers Hemoglobin Manufacture Oxides Proteins Styrene

The eco-origins, actions and demonstration roles of Beijing Green Olympic Game

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Journal of environ.ental sci.nces 2001年第4期13卷 514-519页

作者： Wang, R.-s. res. Cntr. eco-environ.ental sci. Chinese Academy of Sciences Beijing 100085 China

The 29th Olympic Game will be held in Beijing in 2008. It will be a green game to promote sustainable development of men, cities and regions through ecological development advocating 'man and nature be in one'. 'eco' here means a process, a driving force, an action, a culture and a kind of vitality leading to sustainable development. It is a mechanism embodying the Olympic spirit of competition, cooperation and self-reliance. The paper explained the ecological significance, connotation and objectives of Beijing Green Olympic Game. Ten major ecological heritages of Beijing have been investigated including ecologically sound landscape, culture, transportation, physical exercise, health care, sanitation, food, family relationship, agriculture, and human ecological totality. To pres.rve or res.ore the above mentioned old tradition, a green Olympic action plan has been made out in Beijing initiated by NGOs, supported by entrepreneurs and coordinated by government agencies. Four kinds of eco-engineering have been planned for blue sky, clean water, green land and eco-city development. The demonstration role of Beijing Green Olympic Game to developing regions and countries is also discussed.

关键词： Agriculture Health care Sanitation Sustainable development Transportation