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磷矿粉修复重金属污染土壤的研究进展

环境污染与防治 2017年第4期39卷 426-431页

作者：李瑞赵中秋张鹏飞祝培甜中国地质大学(北京)土地科学技术学院北京100083 国土资源部土地整治重点实验室北京100035

重金属污染土壤的化学钝化修复技术可以有效控制重金属对植物及环境的危害。不同的改良剂对重金属污染土壤的改良效果不同,已有的研究表明难溶性磷矿粉是较好的选择。磷矿粉是一种性价比很高的改良剂,而且不会对环境造成破坏。总结了磷... 详细信息

重金属污染土壤的化学钝化修复技术可以有效控制重金属对植物及环境的危害。不同的改良剂对重金属污染土壤的改良效果不同,已有的研究表明难溶性磷矿粉是较好的选择。磷矿粉是一种性价比很高的改良剂,而且不会对环境造成破坏。总结了磷矿粉修复重金属污染土壤的化学机制和影响因素,重点综述了近年来不同粒径磷矿粉、改性磷矿粉修复重金属污染土壤的研究进展,旨在为重金属污染土壤的修复研究提供参考。

关键词：磷矿粉重金属污染修复土壤

Some variants of SAT and their properties

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Progress in Natural Science:Materials International 2002年第10期 71-75页

作者： ZHAO Yunlei and zhu Hong(1. Department of Computer Science, Fudan University, Shanghai 200433, China 2. Department of Computer Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong) Department of Computer Science，Fudan University，Shanghai 200433，China Department of Computer Science，City University of Hong Kong，Tat Chee Avenue，Kowloon，Hong Kong Department of Computer Science，Fudan University，Shanghai 200433，China

A new model for the well-known problem, the satisfiability problem of boolean formula (SAT), is introduced. Based on this model, some variants of SAT and their properties are presented. Denote by NP the class of all languages which can be decided by a non-deterministic polynomial Turing machine and by P the class of all languages which can be decided by a deterministic polynomial-time Turing machine. This model also allows us to give another candidate for the natural problems in ((NP-NPC)-P), denoted as NPI, under the assumption P≠NP, where NPC represents NP-complete. It is proven that this candidate is not in NPC under P≠NP. While, it is indeed in NPI under some stronger but reasonable assumption, specifically, under the Exponential-Time Hypothesis (ETH) . Thus we can partially solve this long standing important open problem.

关键词： NP-complete Karp-reduction SAT ETH NPI SNP.

DETECTING MOISTURE CONTENT OF SOUTHERN SOIL IN CHINA USING NEAR-INFRARED SPECTROSCOPY

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DETECTING MOISTURE CONTENT OF SOUTHERN SOIL IN CHINA USING N...

Circulating Antisperm Antibody (ASA) in Women is not Associated with Missed Abortions at the First-trimester Pregnancy

亚洲精细农业与计算机农业应用联合大会

作者： Feng Yaoze 1.Li Xiaoyu 1.Li Peiwu 2 Lei Tingwu 3 Wang Wei 1.Xiao Wu 1.Zhou zhu 1.1. College of Engineering and Technology Huazhong Agricultural University Wuhan China 2. Oil Crops Research Institute Chinese Academy of Agricultural Sciences Wuhan China 3. Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources Yangling China

Three types of Southern soil （yellow-brown soil, paddy soil and alluvial soil） were studied based on NIR spectra. Soil moisture analysis model of pretreated soil samples was established by PLS, with R 2 =0.9946 and 0.991. and RMSECV=0.801., RMSEP=0.91.% for validation and prediction, respectively. 1. unpretreated soil samples were predicted by re-established PLS model based on Kennard-Stone algorithm,with average absolute error reducing from 0.78 % to 0.42 %, which showed that the soil sample space expansion method can improve model prediction accuracy.

关键词： NIR soil water content PCA PLS Kennard-Stone algorithm

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Journal of Reproduction and Contraception 2011年第3期22卷 139-143页

作者： Yu-xia WANG Wei-jie zhu Department of Obstetrics and Gynecology the First Affiliated Hospital Jinan University Guangzhou 510630 China Institute of Reproductive Immunology Jinan University Guangzhou 510632 China

Objective To determine the role of the circulating antisperm antibody （ASA） in the pathogenesis of missed abortion at the first-trimester pregnancy. Methods Sixty-two patients with a history of missed abortion at the first-trimester pregnancy were enrolled into this study. Indirect immunobead test （IBT） was used to measure the circulating ASA levels. Fifty healthy women with the first-trimester pregnancy set as the control. Results No case had the positive level of ASA according to the World Health Organization criteria （50% or more of the motile sperm with immunobead binding）. Only 1.case in patient group and 1.case in the control had 1.%-20% of the motile spermatozoa with ASA-IgG bead binding. In both patient and control groups, ASA-IgA was found to be completely negative binding. Conclusion The circulating ASA is not associated with the pathogenesis of missed abortions at the first-trimester pregnancy.

关键词： antisperm antibody (ASA) missed abortion sperm woman

cDNA cloning and functional analysis of 4-coumarate ——CoA: ligase (4CL) gene in Chinese white aspen

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Progress in Natural Science:Materials International 2003年第12期 15-20页

作者： ZHAO Huayan 1. WEI Jianhua 2, LU Jing 1. SONG Yanru 1.*, WANG Tai 1.and zhu Zhiqing 1.1. Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 1.0093, China 2. Beijing Center of Agro Biotechnology, Beijing Institute of Agriculture and Forestry, Beijing 1.0089, China) Key Laboratory of Photosynthesis and Environmental Molecular Physiology Institute of Botany Chinese Academy of Sciences Beijing 100093 China Beijing Center of Agro-Biotechnology Beijing Institute of Agriculture and Forestry Beijing 100089 China

cDNA encoding 4 coumarate: CoA ligase (4CL) was isolated from the secondary developing xylem of Chinese white aspen ( Populus tomentosa ) by RT PCR for the first time, which was 1.1. bp in length. The coding sequence and putative amino acid sequence showed 97.53% and 97.00% identity to that of Pt4CL1.in quaking aspen ( P. tremuloids ), respectively. Molecular analysis indicated that 4CL was encoded by multiple genes in *** , its mRNA was highly accumulated in xylem and the expression of 4CL revealed a biphasic pattern in one growing season, almost in phase with the expression of other related enzymes in lignin biosynthesis. Transgenic research showed that expression of antisense 4 CL cDNA led to the decreasing of lignin content in transgenic tobaccos, among which the average reduction was 1..3% and the highest could be up to 1..9%. These data suggested that 4 CL gene was a potential gene used in altering lignin biosynthesis by biotechnology for producing new materials of papermaking.

关键词： Populus tomentosa RT PCR 4CL antisense RNA lignin.

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靖安油田上三叠统延长组长6段沉积相研究

新疆石油地质 2005年第1期26卷 57-61页

作者：李斌朱永铭管英柱中国科学院广州地球化学研究所广州510640 成都理工大学能源学院成都610059

以5条剖面和1.口井的岩心观察为依据,结合储集层岩性、沉积构造和粒度分析等方法对长6油层组进行了多级次旋回层序划分,建立了不同时间尺度的等时地层对比格架。分析了沉积相平面展布规律,认为靖安油田三叠系延长组长6段属湖泊三角洲沉... 详细信息

以5条剖面和1.口井的岩心观察为依据,结合储集层岩性、沉积构造和粒度分析等方法对长6油层组进行了多级次旋回层序划分,建立了不同时间尺度的等时地层对比格架。分析了沉积相平面展布规律,认为靖安油田三叠系延长组长6段属湖泊三角洲沉积体系,构成主体的是三角洲前缘亚相。探讨了沉积相对储集层物性的影响,认为河口砂坝和水下分流河道沉积微相最为发育,是含油气性最好的砂体,已具备了形成大规模油气藏的地质条件,应成为今后勘探的重点。

关键词：沉积相上三叠统延长组水下分流河道沉积构造地层对比层序划分靖安油田储集层物性长6油层

A new notion of soundness in bare public-key model

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Progress in Natural Science:Materials International 2003年第12期 47-51页

作者： ZHAO Yunlei 1.2 * and zhu Hong 1.1. Department of Computer Science, Fudan University, Shanghai 200433, China 2. Department of Computer Science, City University of Hong Kong, Hong Kong, China) Department of Computer Science，Fudan University，Shanghai 200433，China Department of Computer Science，City University of Hong Kong，Hong Kong，China Department of Computer Science，Fudan University，Shanghai 200433，China

A new notion of soundness in bare public key (BPK) model is presented. This new notion just lies in between one time soundness and sequential soundness and its reasonableness is justified in the context of resettabl... 详细信息

关键词： bare public key model resettable zero knowledge pseudorandom functions complexity leveraging.

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体育产业与假日经济增长点的关系研究

天津体育学院学报 2001年第2期16卷 6-8页

作者：张西平朱恺陕西师范大学体育学院西安710062 西安体育学院西安710068

运用逻辑分析、数理统计等方法 ,对体育产业能否成为假日经济增长点的问题进行了研究。结果表明 :体育产业有成为假日经济增长点的潜力 ,由于受到消费偏好、市场体系不完善、政府投资方向、宏观经济形式等因素的制约 ,目前这种潜力尚未... 详细信息

运用逻辑分析、数理统计等方法 ,对体育产业能否成为假日经济增长点的问题进行了研究。结果表明 :体育产业有成为假日经济增长点的潜力 ,由于受到消费偏好、市场体系不完善、政府投资方向、宏观经济形式等因素的制约 ,目前这种潜力尚未完全发挥出来。提出了适度适时开发、多方引资、调整产业结构、加大研究力度、培育消费偏好。

关键词：体育产业假日经济经济增长点

玉米秸秆还田时间和还田方式对土壤肥力和作物产量的影响

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土壤通报 2004年第2期35卷 143-148页

作者：颜丽宋杨贺靖陈盈张昀鲍艳宇关连珠沈阳农业大学农业资源与环境系辽宁沈阳110161 沈阳市1.2中学辽宁沈阳110034

采用微区和田间两种长期定位试验(1.年),探讨了玉米秸秆不同还田时间和还田方式对土壤的培肥作用和对作物产量的影响。研究结果表明,玉米秸秆的还田时间以秋天直接还田并配以适量的微生物快腐剂为好,春天施用腐熟的玉米秸秆不但费工费力... 详细信息

采用微区和田间两种长期定位试验(1.年),探讨了玉米秸秆不同还田时间和还田方式对土壤的培肥作用和对作物产量的影响。研究结果表明,玉米秸秆的还田时间以秋天直接还田并配以适量的微生物快腐剂为好,春天施用腐熟的玉米秸秆不但费工费力,而且对土壤肥力和作物产量没有明显的提高作用;玉米秸秆不同还田方式对土壤肥力和作物产量的影响程度不明显,因此生产上应根据因地制宜的原则,确定适合的还田方式。

关键词：玉米秸秆还田时间还田方式土壤肥力作物产量