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Wetting Rate and Clay Content Effects on Interrill Erosion in Ultisols of Southeastern China

Pedosphere 2010年第1期20卷 129-136页

作者： YAN Feng-Ling, SHI Zhi-hua , cai Chong-Fa and LI Zhao-Xia Key Laboratory of Subtropical Agriculture & Environment, Ministry of Agriculture, huazhong Agricultural University, Wuhan 430070 (China) Key Laboratory of Subtropical Agriculture & Environment Ministry of Agriculture Huazhong Agricultural University Wuhan 430070 (China)

An aggregate stability test and a simulated rainfall test were conducted on four representative Ultisols from southeastern China. The soils selected, with clay contents ranging between 117 and 580 g kg-1 , were derived from shale and Quaternary red clay. The stability of aggregates (2–5 mm in diameter) obtained from the soil samples were determined by the Le Bissonnais method. For determination of infiltration, runoff, and erosion, the soil samples were packed in 30 cm × 60 cm trays, wetted at rates of 2, 10, and 60 mm h-1 , and then exposed to simulated rainfall at 60 mm h-1 for 1 h. The results indicated that both aggregate stability and slaking caused by fast wetting increased with increasing clay content. The effect of wetting rate (WR) on infiltration and seal formation varied with clay contents. In the soil with low clay content (sandy loam), the infiltration rate was affected slightly by WR due to low aggregate stability and slaking. In the soils with medium clay content (silt clay loam and clay), WR affected infiltration significantly due to the high aggregate slaking force. In the soil with high clay content, the effect of WR on infiltration was significant, but not as evident as in the soils with medium clay content, which may be related to high aggregate stability by wetting partially compensating for slaking force. The effect of WR on soil loss was similar to that of runoff, but more pronounced. The findings from this study indicated that the relationship between wetting rate and clay content should be considered when predicting interrill erosion in Ultisols.

关键词： aggregate stability infiltration seal formation

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Reduced SARS-CoV-2 infection risk is associated with the use of Seven-Flavor Herb Tea:A multi-center observational study in Shanghai,China

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Journal of Integrative Medicine 2023年第4期21卷 369-376页

作者： Shun-xian Zhang Xiao-xu Chen Yong Zheng Bing-hua cai Wei Shi Ming Ru Hui Li Dan-dan Zhang Yu Tian Yue-lai Chen Clinical Research Center Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China Medical Affairs Department Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China Medical Affairs Department of Minhang District Health Committee Shanghai 201199China Medical Affairs Department of Fengxian District Health Committee Shanghai 201499China Medical Affairs Department of Jinshan District Health Committee Shanghai 200540China Medical Affairs Department of Xuhui District Health Committee Shanghai 200030China Medical Affairs Department of Changning District Health Committee Shanghai 200050China Medical Affairs Department Jinshan TCM-Integrated HospitalShanghai 201501China Sleep Medicine Center Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China

Objective:Omicron,a severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)variant,is responsible for numerous infections in *** study investigates the association between the use of Seven-Flavor Herb Tea(SFHT)and the risk of SARS-CoV-2 infection to develop precise and differentiated strategies for control of the coronavirus disease 2019(COVID-19).Methods:This case-control study was conducted at shelter hospitals and quarantine hotels in China.A total of 5348 laboratory-confirmed COVID-19 patients were enrolled between April 1 and May 31,2022,while 2190 uninfected individuals served as healthy *** questionnaires were used to collect data on demographics,underlying diseases,vaccination status,and use of *** were propensity-score-matched using 1:1 nearest-neighbor matching of the logit of the propensity ***,a conditional logistic regression model was used for data ***:Overall,7538 eligible subjects were recruited,with an average age of[45.54±16.94]*** age of COVID-19 patients was significantly higher than that of uninfected individuals([48.25±17.48]years vs[38.92±13.41]years;t=22.437,P<0.001).A total of 2190 COVID-19 cases were matched with uninfected individuals at a 1:1 *** use of SFHT(odds ratio=0.753,95%confidence interval:0.692,0.820)was associated with a lower risk of SARS-CoV-2 infection compared to untreated ***:Our findings suggest that taking SFHT reduces the risk of SARS-CoV-2 *** is a useful study in the larger picture of COVID-19 management,but data from large-sample multi-center,randomized clinical trial are warranted to confirm the finding.

关键词： COVID-19 SARS-CoV-2 Seven-Flavor Herb Tea

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Analysis of Renewable Energy Utilization Potential in Buildings of China

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Energy and Power Engineering 2013年第4期5卷 291-293页

作者： Min-hua cai Lan Tang Guangdong Provincial Key Laboratory of Building Energy Efficiency and Application Technologies Guangzhou University Guangzhou China

As a country of great population, China has increasing building energy consumption continuously. It not only threatens the lack of total energy but also hardens the progress of protecting environment. Therefore, it forces the country to accelerate finding substitution application of conventional energy in building, renewable energy building utilization. In base of 2010, this study explores the potential of the renewable energy building utilization by using energy consumption analysis until 2030 and predicts annual alternative quantity of renewable energy in different situations.

关键词： Renewable Energy Building Energy Consumption Potential Analysis Scenario Analysis Method

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A Novel Topological Index for the Studies on Structure-Properties of Alkanes

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Wuhan University Journal of Natural Sciences 2000年第4期5卷 464-468页

作者： Ni cai-hua, Li Liang- chao, Feng Zhi-yun Department of Chemistry, Jingzhou Normal College, Jingzhou, 434100, China Department of Chemistry Jingzhou Normal College Jingzhou China

A novel topological index derived from eccentric connectivity index has been proposed. The new topological index and eccentric connectivity index were correlated with eight physical properties such as the boiling point, critical temperature, critical pressure, critical volume, evaporation heat, density, heat capacity, surface tension, and three thermodynamic properties such as standard enthalpy, standard entropy and standard formation free energy of alkanes. A series of empiric equations for calculating the properties were obtained. Correlation coefficients of nine properties were more than 0.99. Regression analysis and calculation results indicated that the topological indices were well correlated with the physico-chemical properties of alkanes, and the novel topological index was far superior to eccentric connectivity index in the correlation.

关键词： Topological index physico chemical property alkane regression

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KINETICS STUDY ON MELT GRAFTING ACRYLIC ACID ONTO LLDPE USING REACTIVE EXTRUSION

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Chinese Journal of Polymer Science 2005年第6期23卷 603-610页

作者： Qiang Shi Lian-chao Zhu Chuan-lun cai and Jing-hua Yin State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

The kinetics of melt grafting acrylic acid （AA） onto linear low density polyethylene （LLDPE） by using reactive extrusion was investigated. The polymeric peroxides （POOP and POOH） generated by electron beam irradiation were used to initiate the graft reaction. The samples taken out from the barrel at five ports along screw axis were analyzed by FTIR. The spectra show that both the graft copolymerization and homopolymerization proceed in two stages： the graft degree （or mass of homopolymer） increases linearly with the reaction time in the initial stage, and then gradually in the second stage. The rate of graft copolymerization Rg is always faster than that of homopolymerization Rh in the present system and the activation energy is 131 kJ · mol^-1 for graft copolymerization and 127 kJ · mol^-1 for homopolymeirzation. These results were interpreted in terms of solubility and diffusion of monomer, as well as the reactivity and the concentration of reactive species. The relationships between reaction rate and monomer concentration and peroxide concentration were found to be： Rg ∞ [M]^1.46[POOP＋POOH]^0.53 and Rh ∞ [M] ^1.08[POOH]^0.51, which indicate that the addition of monomer to polymeric radicals is a slow step for the graft copolymerization.

关键词： Graft copolymerization Kinetics Reactive extrusion

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双系亲属法与亲属制度的多样性

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中南民族大学学报（人文社会科学版） 2009年第3期29卷 12-18页

作者：蔡华北京大学社会学系北京100871

中国的婚姻法是一部以双系血缘制度为基本原则的亲属法,中国56个民族的传统文化和社会实践都遵循这一基本原则吗?通过介绍汉人、纳人、奕车人、拉祜人和景颇人等民族或族群的血亲制度,并对这些制度进行比较研究,指出了在表面相似的一夫... 详细信息

中国的婚姻法是一部以双系血缘制度为基本原则的亲属法,中国56个民族的传统文化和社会实践都遵循这一基本原则吗?通过介绍汉人、纳人、奕车人、拉祜人和景颇人等民族或族群的血亲制度,并对这些制度进行比较研究,指出了在表面相似的一夫一妻制形式下隐藏着巨大的文化多样性。据此,对少数民族地区自治条例的细化和传统文化保护提出了一些基本问题。

关键词：亲属法元亲属亲属制度文化多样性

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凉山彝族嫫尼现状调查

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民族研究 2006年第6期 45-52页

作者：蔡华西南民族大学民族研究院

彝族嫫尼是生活在彝区的一个特殊群体,由一些已婚女性组成,她们用自己的巫术为人驱鬼治病,禳解灾难,占卜未来。作者在长期田野调查的基础上,描述了凉山彝族嫫尼成巫的原因和条件,她们从事的法事活动,她们的生存现状,以及嫫尼在彝族社会... 详细信息

彝族嫫尼是生活在彝区的一个特殊群体,由一些已婚女性组成,她们用自己的巫术为人驱鬼治病,禳解灾难,占卜未来。作者在长期田野调查的基础上,描述了凉山彝族嫫尼成巫的原因和条件,她们从事的法事活动,她们的生存现状,以及嫫尼在彝族社会中的地位。笔者所做的调查研究可以增加人们对这一特殊群体的了解和认识,为今后进一步的研究奠定一定的基础。

关键词：凉山彝族嫫尼

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节庆日、纪念日:中国共产党的重要宣传资源——以新民主主义革命时期为研究中心

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河北大学学报（哲学社会科学版） 2013年第3期38卷 69-74页

作者：才华燕山大学信息科学与工程学院河北秦皇岛066004 南开大学马克思主义教育学院天津300071

节庆日、纪念日是中国共产党宣传工作的重要资源。在新民主主义革命时期,党充分利用"五一""五四""七一""七七"等丰富的节庆日、纪念日资源开展宣传工作,积累了宝贵的经验和策略,在形势教育、传播主义、宣传斗争、服务中心工作等方面发... 详细信息

节庆日、纪念日是中国共产党宣传工作的重要资源。在新民主主义革命时期,党充分利用"五一""五四""七一""七七"等丰富的节庆日、纪念日资源开展宣传工作,积累了宝贵的经验和策略,在形势教育、传播主义、宣传斗争、服务中心工作等方面发挥了重要作用。

关键词：中国共产党宣传资源

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汉族父系制度与中国亲属法的缺失

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中南民族大学学报（人文社会科学版） 2008年第5期28卷 11-17页

作者：蔡华北京大学社会学系北京100871

传统的汉族社会是一个父系社会。然而,汉族缘何成为父系社会?本文对通过田野调查资料、史料和古典文学作品中有关材料的综合分析,对支撑汉族父系制度的谜底进行了揭示和诠释。与此同时,作者探索了汉族亲属法认定个体亲属身份的基本原则... 详细信息

传统的汉族社会是一个父系社会。然而,汉族缘何成为父系社会?本文对通过田野调查资料、史料和古典文学作品中有关材料的综合分析,对支撑汉族父系制度的谜底进行了揭示和诠释。与此同时,作者探索了汉族亲属法认定个体亲属身份的基本原则,论证了中国传统亲属法和现代亲属法所包含的默示原则,并且指出了在对现行婚姻法三代以内旁系血亲禁婚规定解释中存在的问题。

关键词：素属法汉族身体再现系统默示原则表兄弟姊妹婚

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人类学怎样理解“父亲”——再论“无父无夫的社会”

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世界民族 2011年第1期 40-47页

作者：蔡华北京大学社会学系

"怎样理解‘父亲’?"曾是文化人类学史上多次讨论而未达成共识的谜题。围绕纳人传统文化中是否存在"父亲"概念这个问题,相关著述中有着不同的见解。本文从田野工作所获的第一手资料出发,以对话的形式梳理了不同论点的由来,通过纳人文化... 详细信息

"怎样理解‘父亲’?"曾是文化人类学史上多次讨论而未达成共识的谜题。围绕纳人传统文化中是否存在"父亲"概念这个问题,相关著述中有着不同的见解。本文从田野工作所获的第一手资料出发,以对话的形式梳理了不同论点的由来,通过纳人文化原型中不存在"父亲"观念这个实例揭示了在文化人类学视角下"父亲"的真相。

关键词：父亲纳人亲属关系人类学

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