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Journal of Environmental Sciences 2008年第11期20卷 1281-1287页

作者： XU Yiping zhou Yiqi WANG donghong CHEN Shaohua LIU Junxin WANG Zijian State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Organic micropollutants,with high toxicity and environmental concern,are present in the landfill leachate at much lower levels than total organic constituents (chemical oxygen demand (COD),biochemical oxygen demand (BOD),or total organic carbon (TOC)),and few has been known for their behaviors in different treatment *** this study,occurrence and removal of 17 organochlorine pesticides (OCPs),16 polycyclic aromatic hydrocarbons (PAHs),and technical 4-nonylphenol (4-NP) in landfill leachate in a comb...

关键词： anaerobic landfill leachate membrane bioreactor organic micropollutant

Effects of V addition on the mechanical properties at elevated temperatures in a γ”-strengthened NiCoCr-based multi-component alloy

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Journal of Materials Science & Technology 2022年第12期107卷 290-300页

作者： Yunwei Pan Anping Dong Yang zhou Dafan Du donghong Wang Guoliang Zhu Baode Sun Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Lab of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China

Ni Co Cr-based multi-component alloys have drawn much attention due to their exceptional ductility and strain hardening ***,insufficient strength-ductility synergy of NiCoCr alloy has always been an issue that prevents it from extensive *** to our previous research,the precipitation ofγ”phase can significantly improve the strength-ductility synergy of this alloy system at room *** this study,the effects of V addition onγ”phase stability and high-temperature mechanical properties have been explicitly *** results indicate that V addition can stabilize the metastableγ”phase in this alloy system and prevent it from transforming into a stableδphase at grain boundaries upon 650℃aging,resulting in improved mechanical properties at elevated *** specific strength ofγ”-strengthened multi-component NiCoCr-based alloy can reach up to 86.2 MPa gcmat 650℃,which is higher than those of Ni-based superalloys,IN 939 and *** work provides theoretical guidance for the novel design of γ”-strengthened alloy for high-temperature applications.

关键词： Multi-component alloys CALPHAD γ”phase Microstructural evolution High-temperature mechanical properties

Thermal properties of polyurethane elastomer with different flexible molecular chain based on para-phenylene diisocyanate

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Journal of Materials Science & Technology 2017年第11期33卷 1424-1432页

作者： Wanqing Lei Changqing Fang Xing zhou Jiabin Li Rong Yang Zisen Zhang donghong Liu School of Mechanical and Precision Instrument Engineering Xi' an University of Technology Xi' an 710048 China Faculty of Printing Packing Engineering and Digital Media Technology Xi'an University of Technology Xi'an 710048 China Full Institute of Food Science Zhejiang University Hangzhou 310058 China Corresponding author at: School of Mechanical and Precision Instrument Engi-neering Xi'an University of Technology Xi'an 710048 China.

This work focuses on the relationship between flexibility of molecular chains and thermal properties of polyurethane elastomer（PUE）, which laid the foundation of further research about how to improve thermal properties of PUE. A series of PUE samples with different flexibility of molecular chains was prepared by using 1,4-butanediol（1,4-BDO）/bisphenol-a（BPA） blends with different mole ratios including9/1, 8/2, 7/3, 6/4 and 5/5. As comparison, PUE extended with pure 1,4-BDO and BPA was also *** samples were characterized by differential scanning calorimetry（DSC）, thermogravimetric analysis（TGA）, dynamic mechanical analysis（DMA）, etc. The results showed that with the decrease in flexibility of molecular chains the glass transition temperature（Tg） increased and low-temperature properties became worse. Besides, all samples had a certain degree of microphase separation, and soft segments in some samples were crystallized, i.e. the decreasing flexibility of molecular chains led to the impossibility of chains tightly packing and crystalline domains forming so that the degree of microphase separation decreased and the thermal properties became worse.

关键词： Polyurethane elastomer Different flexible molecular chain Microphase separation Thermal property

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合成地震记录制作在油气勘探中的应用

海洋石油 2012年第1期32卷 28-32页

作者：吴奎周东红吴俊刚于茜魏天罡王伟中海石油(中国)有限公司天津分公司天津塘沽300452

合成地震记录的制作是油气勘探的基础,它是连接地质、测井和地震资料的桥梁。从合成地震记录的基本原理出发,结合油气勘探过程中的具体研究实例,分析了VSP资料与合成地震记录时深关系的差异性、地震资料对合成记录的影响和子波的选择;最... 详细信息

合成地震记录的制作是油气勘探的基础,它是连接地质、测井和地震资料的桥梁。从合成地震记录的基本原理出发,结合油气勘探过程中的具体研究实例,分析了VSP资料与合成地震记录时深关系的差异性、地震资料对合成记录的影响和子波的选择;最后,利用勘探实例着重用阐述合成地震记录在油气勘探中的应用,主要包括把握区域速度、明确储层地震响应特征、识别地震资料的多次波和剔除地震资料的地质"假象"。

关键词：合成地震记录 VSP 子波区域速度多次波

Th22 cells are associated with hepatocellular carcinoma development and progression

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Chinese Journal of Cancer Research 2014年第2期26卷 135-141页

作者： Shanyu Qin Shijia Ma Xiaoli Huang donghong Lu You zhou Haixing Jiang Department of Gastroenterology the First Affiliated Hospital of Guangxi Medical University Minerva Foundation Institute for Medical Research

Objective： IL-22-producing CD4＋ T helper cells （Th22 cells） have been identified as major inducers of tissue inflammation and immune responses. Currently, no previous study explored the role of Th22 cells in the pathogenesis of hepatocellular carcinoma （HCC）. The study aimed to determine the biological function of Th22 cells and its effector IL-22 in HCC patients. Methods： Forty-five HCC patients and 19 healthy controls were recruited and their peripheral blood was collected. The flesh HCC tissues, adjacent HCC tissues and ten normal liver tissues were also collected. Flow cytometry analysis was used to determine the frequencies of circulating Th22 cells and Thl7 cells. Serum IL-22 levels were tested by enzyme-linked immtmosorbent assay （ELISA）. Immunohistochemical staining and real-time polymerase chain reaction （PCR） were used to detect IL-22 protein and mRNA in tissues specimens, respectively. Results： Circulating Th22 cells, Thl7 cells and serum IL-22 levels were significantly elevated in HCC patients compared with those of healthy controls （P〈0.001）. Th22 cells were showed to be positively correlated with IL-22 in HCC patients （P〈0.05）, but not in healthy controls. No significant differences were found in HCC patients with HBeAg positivity or negativity in term of Th22 cells and serum IL-22 levels. The expression of IL-22 protein and mRNA was highest in HCC tissues, followed by adjacent HCC tissues and normal liver tissues. Furthermore, Th22 cells, serum IL-22 levels and IL-22 mRNA were elevated at stage III-IV compared with stage I-II of HCC （P〈0.05）. Conclusions： Elevation of circulating Th22 cells and IL-22 may be implicated in the pathogenesis of HCC, and potentially be cellular targets for therapeutic intervention.

关键词： Th2 2 IL-2 2 hepatocellular carcinoma (HCC)

粤北左坑离子吸附型稀土矿床含矿岩体地球化学特征与稀土元素迁移‒富集机理

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大地构造与成矿学 2024年第2期48卷 259-269,I0001-I0004页

作者：李莎莎汪礼明熊子良刘东宏张富铁刘浏黄凯周忠帅杨胜虎欧阳志侠中国科学院广州地球化学研究所矿物学与成矿学重点实验室广东广州510640 广东省有色地质勘查院广东广州510089 广东省有色金属地质局广东广州510080

广东省新丰县左坑大型稀土矿床为典型的华南离子吸附型矿床,位于佛冈复式岩体的北部,已查明稀土矿石量17152万吨,总稀土氧化物(TREO)资源量约18万吨,离子相稀土氧化物(SREO)资源量约11万吨。对该矿床成矿母岩黑云母花岗岩进行主量和稀... 详细信息

广东省新丰县左坑大型稀土矿床为典型的华南离子吸附型矿床,位于佛冈复式岩体的北部,已查明稀土矿石量17152万吨,总稀土氧化物(TREO)资源量约18万吨,离子相稀土氧化物(SREO)资源量约11万吨。对该矿床成矿母岩黑云母花岗岩进行主量和稀土元素分析发现,其岩石性质和地球化学特征与佛冈花岗岩主体类似,同属于高硅、富碱、贫钙镁的铝质A型花岗岩。对6个钻孔的SREO含量、TREO含量、离子相稀土氧化物析出率、地理位置、成矿母岩稀土含量等信息进行对比研究后发现:①基岩稀土含量相似的情况下,产出于山顶的矿体上方风化壳厚度越大,形成矿体所需要的离子相稀土氧化物析出率越小;②稀土元素在成矿母岩浆中完成初始富集后,进而在风化过程中完成二次富集,还可能在剥蚀过程中随地表水下渗迁移至风化壳中渗透系数更小的位置完成第三次富集。因此,在离子吸附型稀土矿床中影响稀土元素垂向分布模式的因素除了风化壳中水体pH值和水化学类型外,还需考虑静水面与矿体的相对位置和渗透系数的共同作用。

关键词：离子吸附型稀土矿床稀土元素离子相析出率富集倍数静水面渗透系数

Framework Construction and Application for Global Health Information Platform

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Wuhan University Journal of Natural Sciences 2015年第2期20卷 153-158页

作者： zhou Jing Lü Chaozhen JI donghong LIANG Xiaohui School of Computer Wuhan University Global Health Institute Wuhan University School of Public Health Wuhan University

In order to understand the global health related information rapidly and timely, a global health information platform based on big data from internet is constructed. In this paper, we introduce the framework and application of the global health information platform. The functions of information platform mainly include two aspects： to analyze and disseminate theoretical and technological progress of the main research fields in global health and to monitor real-time emergencies, epidemic situation and hot topics related to the field of global health. The objective of this research is to establish a Chinese-English bilingual information platform in the global health field. The platform would help academic researchers understand and master global health progress in time; acquire information of global health comprehensively, accurately and dynamically; and eventually help deal with the risk of global diseases, formulate appropriate health policies and actively participate in the international global health affairs.

关键词： global health information platform basic framework application

中医药治疗慢性肾脏病临床效果的meta分析

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中国当代医药 2024年第11期31卷 4-8页

作者：周婷雷文明冯伟刘萍贺东红江西省萍乡市中医院肾内科江西萍乡337000

目的采用系统评价与meta分析探讨中医药治疗慢性肾脏病的临床效果。方法计算机检索国内外数据库,并按照纳入和排除标准筛选出符合条件的文献,经文献数据提取、质量评价后采用RevMan5.3软件进行meta分析。结果纳入17篇随机对照试验(RCT),... 详细信息

目的采用系统评价与meta分析探讨中医药治疗慢性肾脏病的临床效果。方法计算机检索国内外数据库,并按照纳入和排除标准筛选出符合条件的文献,经文献数据提取、质量评价后采用RevMan5.3软件进行meta分析。结果纳入17篇随机对照试验(RCT),共1151例患者,大多数纳入试验质量偏低。meta分析结果显示,试验组的总有效率(I2=33%,RR=1.31,95%CI:1.22~1.40)、肾小球滤过率(I2=50%,WMD=4.04,95%CI:2.04~6.05)高于对照组,血肌酐(I2=29%,WMD=-15.42,95%CI:-18.32~-12.51)、尿素氮(I2=77%,WMD=-1.27,95%CI:-1.81~-0.73)、中医证候积分(I2=89%,WMD=-6.97,95%CI:-9.47~-4.47)、24 h尿蛋白定量(I2=0%,WMD=-0.12,95%CI:-0.21~-0.03)低于对照组,差异有统计学意义(P<0.05)。结论中医药联合西医常规治疗慢性肾脏病,效果更佳,可改善中医症状和肾功能。

关键词：中医药慢性肾脏病临床疗效随机对照试验 Meta分析

一株拮抗菌产生的抗菌物质的分离纯化与初步鉴定

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饲料工业 2024年第8期45卷 104-109页

作者：夏尚远薛东红周启升孙凤霞夏尚飞刘训理枣庄市农业综合执法支队山东枣庄277100 山东农业大学山东泰安271000 山东交通职业学院山东泰安271000 新泰市畜牧兽医事业发展服务中心山东泰安271000 枣庄职业学院山东枣庄277100

试验旨在分离纯化XDH菌株产生的抗菌物质,并初步鉴定有效抗菌物质的结构。从泰山林地土壤中分离获得一株对大肠杆菌及鸡白痢沙门氏菌等多种动物致病菌具有较强拮抗作用的短短芽孢杆菌XDH,通过硫酸铵盐析和层析技术对该菌株产生的抗菌物... 详细信息

试验旨在分离纯化XDH菌株产生的抗菌物质,并初步鉴定有效抗菌物质的结构。从泰山林地土壤中分离获得一株对大肠杆菌及鸡白痢沙门氏菌等多种动物致病菌具有较强拮抗作用的短短芽孢杆菌XDH,通过硫酸铵盐析和层析技术对该菌株产生的抗菌物质进行了分离纯化,对纯化后的抗菌物质进行了性质研究,并对抗菌物质B组分进行了结构鉴定。结果为:经过CM Sepharose FF离子交换层析、Sephadex G25凝胶层析对抗菌物质进行分离纯化,纯化后的抗菌物质对大肠杆菌的最小抑菌浓度(MIC)、最小杀菌浓度(MBC)分别为2.34μg/mL和4.69μg/mL,对鸡白痢沙门氏菌的MIC、MBC分别为0.63μg/mL和1.25μg/mL。采用AKTA Explore10层析系统对抗菌物质进一步分离纯化,获得A、B、C三个活性组分,其中,活性组分B的质谱解析结果显示,其分子量为1570.9 Da,推断为一新的多肽类抗菌物质。

关键词：大肠杆菌拮抗菌抗菌物质分离纯化结构鉴定

Effects of Land Use Change on the Ecosystem Services Value in the Dry-Hot Valley

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Wuhan University Journal of Natural Sciences 2007年第4期12卷 743-748页

作者： zhou Hongyi XIONG donghong YANG Zhong HE Xiubin Key Laboratory of Mountain Hazards and Surface Process Chinese Academy of Sciences/Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 Sichuan China Graduate University of Chinese Academy of Sciences Beijing 100049 China

The objective of the study reported here was to determine whether LANDSAT TM images could be used to quantify changes in land-use and ecosystem services in Yuanmou County. The sizes of six land use/land cover （LUCC） categories were estimated in Yuanmou County according to the LANDSAT TM images in the summer of 1986 and 2005. Coefficients published by Xie Gaodi and co-workers in 2003 were used to value changes in ecosystem services delivered by each land use/land cover category, and the ecosystem services sensitivity analysis was conducted to determine the effect of manipulating these coefficients on the estimated values. The important results are summarized as followings. （1） The estimated size of cultivated land, pasture land, water area and unused land decreased by 6.39%, 1.35%, 2.25% and 10.67% respectively between 1986 and 2005. By contrast, the estimated size of forest land and construction land increased by about 2.23% and 71.15% respectively between 1986 and 2005. （2） The total ecosystem services value （EVS） of the study area increased from 2 142 132 609.46 yuan to 2 146 416 621.00 yuan, with the net increase of 4 284 011.54 yuan during the 20-year time period. （3） The coefficient sensitivity （CS） of the study are less than unity in all cases （CS 〈 1）. This indicates that the total ecosystem values estimated for the study area are relatively inelastic with respect to the ecosystem service coefficients. While this implies that our estimates are robust and the coefficient is reasonable, highly under or over valued coefficients can substantially affect the veracity of estimated changes in ecosystem service values overtime even when the CS are less than unity（CS 〈 1）.

关键词： land use/land cover ecosystem services value dry-hot valley Yunnan