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Synthesis and Properties of Novel Cationic Maleic Diester Polymerizable Surfactants

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Chinese Chemical Letters 2001年第6期12卷 523-526页

作者： Jian XU Gan Zuo LI Guo Wei ZHOU fa Ye yao Key Laboratory for Colloid and Interface Chemistry of State Education Ministry Shandong UniversityJinan 250100

Three new cationic polymerizable surfactants are synthesized by the reaction of alkylmaleic hemiester with glycidyltrimethylammonium chloride. Their structures are confirmed by H-1 NMR, IR and elements analysis. The values of CMC and gamma (CMC) of these surfactants have been measured. One can obtain nearly monodisperse polystyrene latex by emulsion polymerization using the polymerizable surfactant.

关键词： Polymerizable surfactant maleic diester surface active monomer surfmer

Differential gene and protein expression between rat tibial nerve and common peroneal nerve during wallerian degeneration

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Neural Regeneration Research 2019年第12期14卷 2183-2191页

作者： yao-fa Lin Zheng Xie Jun Zhou Gang Yin Hao-Dong Lin Department of Orthopedic Surgery Changzheng Hospital the Second Military Medical University Shanghai China Department of Orthopedic Surgery Shanghai General Hospital Shanghai Jiao Tong University School of Medicine Shanghai China

Wallerian degeneration and nerve regeneration after injury are complex processes involving many genes, proteins and cytokines. After different peripheral nerve injuries the regeneration rate can differ. Whether this is caused by differential expression of genes and proteins during Wallerian degeneration remains unclear. The right tibial nerve and the common peroneal nerve of the same rat were exposed and completely cut through and then sutured in the same horizontal plane. On days 1, 7, 14, and 21 after surgery, 1–2 cm of nerve tissue distal to the suture site was dissected out from the tibial and common peroneal nerves. The differences in gene and protein expression during Wallerian degeneration of the injured nerves were then studied by RNA sequencing and proteomic techniques. In the tibial and common peroneal nerves, there were 1718, 1374, 1187, and 2195 differentially expressed genes, and 477, 447, 619, and 495 differentially expressed proteins on days 1, 7, 14, and 21 after surgery, respectively. Forty-seven pathways were activated during Wallerian degeneration. Three genes showing significant differential expression by RNA sequencing (Hoxd4, Lpcat4 and Tbx1) were assayed by real-time quantitative polymerase chain reaction. RNA sequencing and real-time quantitative polymerase chain reaction results were consistent. Our findings showed that expression of genes and proteins in injured tibial and the common peroneal nerves were significantly different during Wallerian degeneration at different time points. This suggests that the biological processes during Wallerian degeneration are different in different peripheral nerves after injury. The procedure was approved by the Animal Experimental Ethics Committee of the Second Military Medical University, China (approval No. CZ20160218) on February 18, 2016.

关键词： nerve regeneration peripheral nerves peripheral nerve injuries Wallerian degeneration tibial nerve common peroneal nerve RNA sequencing proteomic real-time quantitative polymerase chain reaction neural regeneration

Research on Genesis of Pyrite near the Permian-Triassic Boundary in Meishan,Zhejiang,China

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Journal of China University of Mining and Technology 2006年第4期16卷 457-460页

作者： JIANG yao-fa TANG Yue-gang CHOU Chen-lin Department of Resourses and Geoscience China University of Mining ＆ Technology Beijing 100083 China Xuzhou Institute of A rchitectural Technology Xuzhou Jiangsu 221008 China Illinois State Geological Survey Champaign IL 61820 U.S.A

The content and crystal forms of pyrite and sulfur isotope composition of pyrite sulfur as well as its vertical distribution near the Permian-Triassic （P/T） boundary in the Meishan section, Changxing county, Zhejiang province, China were studied using geological, petrological, mineralogical and geochemical methods （techniques）. The result showed that the genesis of abundant pyrites in bed 24e2 at the uppermost part of the Changxing Formation in the Me- ishan section may be related to volcanic activity. In bed 24e2 of the Meishan section, pyrite has its highest content of 1.84% and the sulfur isotope composition has the highest 834S value at ＋2.2%0 which is very similar to that of the average value of volcanic gas, There are some volcanic products such as β-quartz, siliceous cylinders and siliceous spherules which coexisted with pyrites in beds 24e2 and 24f. It can be concluded that a large quantity of volcanic ash fell into the South China Sea and was incorporated into marine sediments during the formation of limestone at the uppermost part of the Changxing Formation. The volcanic eruption with massive amounts of H2S and SO2 gas at the end of the Permian period resulted in the enrichment of HES in the South China Sea areas, The reaction of H2S with reactive iron minerals formed the mass of abundant pyrites.

关键词： pyrites sulfur isotope β-quartz Permian-Triassic boundary volcanism

Tribological performance of organic cadmium compound as lubricant additive

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中国有色金属学会会刊：英文版 2004年第z1期14卷 374-378页

作者： HU Jian-qiang XIE Feng ZHU Huan-qin ZHEN fa-zheng yao Jun-bing Department of Aviation Oil Air Force Logistics Institute Xuzhou 221000 China Department of Aviation Oil Air Force Logistics Institute Xuzhou 221000 China Department of Aviation Oil Air Force Logistics Institute Xuzhou 221000 China Department of Aviation Oil Air Force Logistics Institute Xuzhou 221000 China First Department Aviation Oil Research Institute Beijing 100000 China

The oil-soluble cadmium dipropyldithiophosphate additive was synthesized. A four-ball tester was used to evaluate the tribological performance of the additive in a mineral oil under different loads and lubricant grease synthesized compared with some commercial additives. The results show that it exhibits excellent antiwear and load-carrying capacities and is better than other additives. The surface analytical tools such as scanning electron microscope (SEM) with energy dispersive X-ray (EDX), X-ray photoelectron spectrometer (XPS) were used to investigate the topography, the compositions, and chemical states of some typical elements on the rubbing surface of worn *** and light topography of worn scar further confirms that the additive shows good antiwear capacities. The results of EDX and XPS analyses indicate that tribochemical mixed protective films consisting of atomic cadmium, sulphides, sulphates and phosphates are formed on the rubbing surface, which contribute to improving the tribological properties of lubricant and grease. Particularly, the soft cadmium film formed plays an important role in improving antiwear properties of oils. Finally, antiwear mechanism of the additive and formation scheme of atomic cadmium was proposed.

关键词： cadmium dipropyldithiophosphate additive extreme pressure antiwear mechanism

黄河干流甘肃白银-宁夏沙坡头段水体污染现状评价及源解析

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生态与农村环境学报 2024年第5期40卷 710-717页

作者：雷红平赵琳兴夏发长刘福田李得忠崔宝祖祁尧刚欧立鹏杨永顺中国地质调查局西宁自然资源综合调查中心青海西宁810000 兰州大学地质科学与矿产资源学院/甘肃省矿山环境和城市地质工程研究中心甘肃兰州730000

为查明黄河干流甘肃白银-宁夏沙坡头段水体污染现状,系统采集代表性水体样品69组,测定As、Cu、Cd、Zn、Pb和Mn浓度,分别采用重金属污染指数、内梅罗综合指数和潜在生态风险评估模型对6种元素污染特征和潜在生态风险进行评价,并结合研究... 详细信息

为查明黄河干流甘肃白银-宁夏沙坡头段水体污染现状,系统采集代表性水体样品69组,测定As、Cu、Cd、Zn、Pb和Mn浓度,分别采用重金属污染指数、内梅罗综合指数和潜在生态风险评估模型对6种元素污染特征和潜在生态风险进行评价,并结合研究区工农业分布现状,基于皮尔逊相关性分析和主成分分析法解析主要污染源。结果表明,研究区水体中Mn超标,As、Cu、Cd、Zn和Pb达Ⅱ类水质标准;在空间分布上,各元素浓度从上游至下游呈逐渐上升趋势,且高浓度点位大都位于入河交汇处及下游邻近河段。重金属污染指数评价结果表明研究区水体属非常轻微污染水平,内梅罗综合指数评价结果表明水体介于尚清洁状态到重度污染状态之间;潜在生态风险评价结果表明,单元素潜在生态风险指数和多元素综合潜在生态风险指数均属于轻微生态风险。As、Cu和Mn主要为工业源和自然源的复合污染源,Cd和Pb主要受农业源和工业源的复合影响,Zn主要来源于交通污染,人类活动是影响研究区水质的关键因素。

关键词：黄河水体污染污染评价来源解析

Decomposition of dimethyl sulfide in a wire-cylinder pulse corona reactor

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第1期10卷 127-132页

作者： Jian-tao YANG yao SHI Jie CHEN Qing-fa SU Da-hui WANG Jing CAO Department of Environmental Science Zhejiang University Hangzhou 310028 China

Decomposition of dimethyl sulfide (DMS) in air was investigated experimentally by using a wire-cylinder dielectric barrier discharge (DBD) reactor at room temperature and atmospheric pressure.A new type of high pulse voltage source with a thyratron switch and a Blumlein pulse-forming network (BPFN) was adopted in our *** maximum power output of the pulse voltage source and the maximum peak voltage were 1kW and 100kV,*** important parameters affecting odor decomposition,including peak voltage,pulse frequency,gas flow rate,initial concentration,and humidity,which influenced the removal efficiency,were *** results showed that DMS could be treated effectively and almost a 100% removal efficiency was achieved at the conditions with an initial concentration of 832mg/m3 and a gas flow rate of 1000ml/*** boosts the removal efficiency and improves the energy yield (EY) *** EY of 832mg/m3 DMS was 2.87mg/kJ when the relative humidity was above 30%.In the case of DMS removal,the ozone and nitrogen oxides were observed in the exhaust *** carbon and sulfur elements of DMS were mainly converted to carbon dioxide,carbon monoxide and sulfur ***,sulfur was discovered in the *** to the results,the optimization design for the reactor and the matching of high pulse voltage source can be reckoned.

关键词： Pulse corona discharge Blumlein pulse-forming network (BPFN) Decomposition Dimenthyl sulfide (DMS) Specific energy density Energy yield (EY)

Information Entropy Squeezing for a Atom in Mode-Mode Competition System

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Communications in Theoretical Physics 2008年第12期50卷 1411-1416页

作者： WU Qin faNG Mao-fa LI Shao-Xin LI Ying HU yao-Hua School of Basic Medical Science Guangdong Medical College Dongguan 523808 China College of Physics and Information Science Hunan Normal University Changsha 410081 China

The entropy squeezing properties for a two-level atom interacting with a two-mode field via two differentcompeting transitions are investigated from a quantum information point of *** influences of the initial state of thesystem and the relative coupling strength between the atom and the field on the atomic information entropy squeezingare *** results show that the squeezed direction and the frequency of the information entropy squeezing canbe controlled by choosing the phase of the atom dipole and the relative competing strength of atom-field,*** find that,under the same condition,no atomic variance squeezing is predicted from the HUR while optimal entropysqueezing is obtained from the EUR,so the quantum information entropy is a remarkable precision measure for theatomic squeezing in the considered system.

关键词： mode-mode competition model information entropy squeezing variance squeezing information entropy uncertainty relation

Immunohistochemical detection of HCV infection in patients with hepatocellular carcinoma and other liver diseases

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World Journal of Gastroenterology 1998年第1期4卷 69-70页

作者： ZHANG Li-fa PENG Wen-Wei yao Ji-Lu TANG Yong-Huang 不详

IM To detect HCV infection in patients with HCC and other liver diseases by the immunohistochemical method.METHODS The expression of HCV antigen was identified by means of LSAB (labelled streptavidinbiotin) method using antiNS3 monoclonal antibody.RESULTS The positive rates of HCV antigen in the three groups of HCC, liver cirrhosis and hepatitis were 135% (7/52), 125% (2/16), and 10% (4/40) respectively, while in the samples from patients with constitutional jaundice and normal liver samples, no HCV antigen was found. HCV antigen could be seen in the nuclei and/or cytoplasms of carcinoma cells and/or pericancerous hepatocytes. In HCC, HCV antigen was more often seen in nuclei than in cytoplasms. The positive rate of HCV antigen in pericancerous tissues was higher than that in cancerous tissues.CONCLUSION HCV is associated with HCC, and HCV infection enhances the development of liver diseases. HCV affects the initiative period of HCC and induces the malignant phenotypic alteration of hepatocytes..

关键词： Hepatitis C carcinoma,hepatocellular immunohistochemistry liver neoplasms liver diseases

北非摩洛哥小阿特拉斯东段晚泥盆世法门期叠层石的发现

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华南地质 2024年第1期40卷 56-62页

作者：曾雄伟何垚砚王成刚吴发富危凯王志宏古生物与地质环境演化湖北省重点实验室湖北武汉430205 中国地质调查局武汉地质调查中心(中南地质科技创新中心) 湖北武汉430205

北非摩洛哥小阿特拉斯东段Fecht地区的晚泥盆世地层划分为ds3和dh两个单元。ds3单元是一套厚约1.3m的灰色夹紫红色厚-薄层瘤状生屑灰岩,发育叠层石,产丰富的海百合茎和头足类,局部伴生腕足和三叶虫。dh单元下部为灰色薄层泥质粉砂岩与... 详细信息

北非摩洛哥小阿特拉斯东段Fecht地区的晚泥盆世地层划分为ds3和dh两个单元。ds3单元是一套厚约1.3m的灰色夹紫红色厚-薄层瘤状生屑灰岩,发育叠层石,产丰富的海百合茎和头足类,局部伴生腕足和三叶虫。dh单元下部为灰色薄层泥质粉砂岩与粉砂质页岩互层,夹泥灰岩透镜体;上部为灰绿色中层细砂岩,发育波痕构造,产遗迹化石和双壳类。牙形石生物地层表明这两个单元都处于法门期早Palmatolepis marginifera带。本文首次报道了摩洛哥晚泥盆世法门期的叠层石,说明弗拉期-法门期生物灭绝事件发生后,微生物首先出现繁盛,随后才开始骨骼生物的复苏。

关键词：叠层石牙形石法门期晚泥盆世小阿特拉斯东段北非摩洛哥