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| 1 | Contamination by Organochlorine Pesticides in the Estuaries of Southeast China显示文摘Persistent organic pollutants(POPs) such as organochlorine pesticides are of global concern due to their widespread occurrence and persistence. This paper reports recent research studying the distribution and fate of organochlorine pesticides in the Jiulong River, the Minjiang River and the Pearl River estuaries in Southeast China. Eighteen organochlorine pesticides were extracted from water, pore water and sediment samples, followed by analysis by GC ECD. The results showed that the contamination levels were similar in these three estuaries. The levels of the total organochlorine pesticides in porewater were significantly higher than those in surface water, due to the high affinity of these hydrophobic compounds for sediment phase. Among the hexachlorocyclohexane(HCH) compounds, β HCH was found to be the most important isomer. The analysis of 1,1,1 trichloro 2,2 bis chlorophenyl ethane(DDT) and its metabolites showed that 1,1 dichloro 2[ o chlorophenyl] 2[ p chlorophenyl] ethylene(DDE) was dominant in the group. | Z. L. Zhang 1,2 , H. S. Hong 2, J. L. Zhou 3,** , M. H. Dai 2, K. Maskaouib 2 and W. Q. Chen 2 1. Department of Environmental Science and Engineering, Tsinghua POPs Research Centre, Tsinghua University, Beijing 100084, China 2. Key Laborator | 2002 | Chemical Research in Chinese Universities2002,18,2: | 13 |
| 2 | 经济转轨、劳动力市场发育与民工流动——中国大城市吸收农村劳动力研究显示文摘本文把民工流动现象置于经济转轨和劳动力市场发育的宏观背景下加以考察,揭示了民工流动的动因,流动者的经济社会特征,民工流动过程对城市化、劳动力市场发育和农村经济发展的效应,以及政府管理的意义、范围和方式。在理论分析的基础上,作者提出了思路性的政策建议。 | $$$$Research Team on Chinese Big Cities Absorbing Rural Labour This paper analyses the rural labor floating on the background of economic transfermation and the development of labor market.The paper exposes the causes, the economic and social features of | 1996 | 中国农村观察1996,,5: | 5 |
| 3 | CSCO_3 CYCLES IN SALAWUSU RIVER BASINSINCE 150KA B.P.显示文摘ABSTRACT: This paper, with Milanggouwan stratigraphic section as a typical section of the Salawusu River Basin, explores the relation between CaCO3 content distribution and climate change since 150 ka B. P. and concludes that: 1) The low-high changes of CaCO3 content in the section has a remarkable corresponding relation with the sedimentary cycles of ancient aeolian sand and overlying fluviolacustrine facies or palaeosols. 2) CaCO3 distribution in aeolian sand is relatively meagre, ranging from 0. 8% - 7. 18%, or on an average 2. 50% but relatively enriches in the fluviolacustrine faceis and palaeosols, ranging from 2. 20% - 14. 9% , or on an average 5. 74%. This implies that they have different climatic backgrounds. The former was the product of erosion, transport and deposition by wind under arid and cold climatic conditions, whereas the latter was related to its special low-lying geomorphic position between the Ordos Plateau and Loess Plateau and warm-humid climatic environment. When the climatic became warm and humid, fluviolacustrine and swamp facies developed, soil-forming action strengthened, and low-lying catchment condition was favorable to CaCO3 accumulation. 3) The basic cause responsible for the multicycle of CaCO3 migration and accumulation in the Milanggouwan section may be the multiple alterations of winter and summer monsoons over the Mu Us Desert under the influences of climatic fluctuation of glacial and interglacial periods in the Northern Hemisphere since 150ka B. P. . | LUO Kai-li1,2, LI Bao-sheng1,2, ZHU Yi-zhi2, JIN He-ling3, ZHANG David Dian4, YAN Man-cun5, LI Hou-xin1, YAO Chun-xia1, ZHANG Yu-hong1f 1. Department of Geography, South China Normal University, Guangzhou 510631, P. R. China 2. State Key Labor | 2001 | Chinese Geographical Science2001,11,4: | 4 |
| 4 | Coordination 2 Costs and Knowledge 显示文摘 | Becker G S Murphy K The Division of Labor | 1992 | Quarterly Journal of Economics1992,107,4: | 1 |
| 5 | The Intersection of Sex and Social Class in the Course of Linguistic Change 显示文摘 | Labor W | 1991 | Language Varaiation and Linguistic Change(2)1991,,: | 1 |
| 6 | Coordination 2 Costs and Knowledge显示文摘 | Becker G S Murphy K The Division of Labor | 1992 | Quarterly Journal of Economics1992,107,4: | 1 |
| 7 | Respiratory morbidity in late preterm births显示文摘 | Consortium on Safe Labor Hibbard JU Wilkins J | 2010 | JAMA2010,304,4: | 1 |
| 8 | Comparison of the in-vitro effect of several macrolides on the oxidative burst of human neutrophils 显示文摘 | Labor MT El B J Babin CC | 1989 | J Antimicrob Chemother1989,24,4: | 1 |
| 9 | Beneficial effect of carotid endarterectomy in symp- tomatic patients with high-grad carotid stenosis显示文摘 | North America Symptomatic Carotid Endarterectomy Trial Col- laborators | 1991 | N Engl J Med1991,325,: | 1 |
| 10 | The amendment of the Clinical Diagnostic Criteria in Japan (JPS2011) in response to the proposal of the International Consensus of Diagnostic Criteria (ICDC) for autoimmune pancreatitis显示文摘 | Shimosegawa T Working Group Members of the Japan Pancreas Society Research Committee for Intractable Pancreatic Disease by the Ministry of Labor | 2012 | Pancreas2012,41,: | 1 |
| 11 | Beneficial effect of carotid endarterectomy in symptom- atic patients with high- grade carotid stenosis显示文摘 | North American Symptomatic Carotid Endarterecmmy Trial Col- Laborators | 1991 | N Engl J Med1991,325,7: | 1 |
| 12 | Sedimen-tation of magnesium hydroxide in seawater and its effect on plant capacity显示文摘 | Martinal V Labor M PetricN | 1997 | Indian J Mar Sci1997,26,4: | 1 |
| 13 | 显示文摘 | Lewis Economic Development with Unlimited Supplies of Labor | 1954 | Manchester School of Economics and Social Studies1954,22,5: | 1 |
| 14 | Diuretic versus c- blocker as first-step antihypertensive therapy final results from the antihypertensive and lipid-lowering treatment to prevent heart attack trial (ALLHAT) 显示文摘 | ANTIHYPERTENSIVE LIPID-LOWERING TREAT- MENT TO PREVENT HEART ATTACK TRIAL COL- LABORATIVE RESEARCH GROUP | 2003 | Hypertension2003,42,3: | 1 |
| 15 | 显示文摘 | Cotton DB Strassner HT Hill LM : Comparison of magnesium sulphate terbutaline and a placebo for inhibition of preterm labor | 1984 | Am J Obstet Gynecol1984,148,: | 1 |
| 16 | Reducing uncertainties about the effects of ehe- moradiotherapy for cervical cancer:a systematic review and meta-analysis of individual patient data from 18 randomized trials 显示文摘 | Chemoradiotherapy for Cervical Cancer Meta-Analysis Col- laboration | 2008 | J Clin 0ncol2008,26,35: | 1 |
| 17 | Reducing uncertainties about the effects of chemoradiotherapy for cervical cancer: A systematic re- view and meta-analysis of individual patient data from 18 randomized trials 显示文摘 | Chemoradiotherapy for cervical cancer meta-analysis col- laboration | 2008 | J Clin Oncol2008,26,35: | 1 |
| 18 | Respiratory morbidity in late preterm births显示文摘 | Consortium on Safe Labor Hibbard JU Wilkins I | 2010 | JAMA2010,304,4: | 1 |
| 19 | Beneficial effect of carotid endartereetomy in symp- tomatic patients with high-grade carotid stenosis显示文摘 | North American Symptomatic Carotid Endarterectomy Trial Col- laborators | 1991 | N Engl J Med1991,325,: | 1 |
| 20 | Productivity Growth in Greek Manufacturing Firms显示文摘 | Papadogonas Theodore and Fotini Voulgaris Labor | 2005 | Operational Research2005,,3: | 1 |