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A New Hapten for Immunoassay of Aldicarb

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Chinese Chemical Letters 2006年第8期17卷 1021-1024页

作者： Yan Feng zhang Zhi xian GAO Qing min zhang Shu Gui DAI College of Environmental Science and Engineering Nankai University Tianjin 300071 Institute of Hygiene and Environmental Medicine Tianjin 300050

A new hapten, aldicarb oxime succinic ester （AOSE）, was synthesized for immunoassay of aldicarb. It was conjugated to proteins by active ester method. Polyclonal antibody was raised against AOSE-BSA （bovine serum albumin） conjugate. Enzyme-linked immunosorbent assays （ELISAs） showed that this antiserum had high affinity to aldicarb and can be used for sensitive and selective immunoassay of aldicarb.

关键词： Aldicarb immunoassay hapten analysis.

Informational uncertainties of risk assessment about accidents of chemicals

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Journal of Environmental Sciences 2001年第1期13卷 69-74页

作者： zhang Yi-xian Suzhou Institute of Urban Construction and Environmental Protection Suzhou 215011China

An analysis system of informational uncertainties for accidental risk assessment of chemicals is introduced. Statistical test methods and fuzzy sets method can do the quantitative analysis of the input parameters. The uncerainties of the model can be used by quantitative compared method for the leakage accidents of chemicals. The estimation of the leaking time is important for discussing accidental source term. The uncertain analyses of the release accident for pipeline gas (CO) liquid chlorine and liquid propane gas (LPG) have been discussed.

关键词： uncertainty risk assessment accident chemicals pipeline gas liquid chlorine LPG

Morphological and mineralogical characterizations of oolitic iron ore in the Exi region, China

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International Journal of minerals,Metallurgy and Materials 2013年第2期20卷 113-118页

作者： Shao-xian Song Ernesto Fabian Campos-Toro Yi-min zhang Alejandro Lopez-Valdivieso School of Resources and Environmental Engineering Wuhan University of Technology Instituto de Metalurgia Universidad Autonoma de San Luis Potosi

The morphological and mineralogical characterizations of a Chinese oolitic iron ore （Exi deposit） were studied by scanning electron microscopy and energy-dispersive X-ray spectroscopy in this work. It is shown that the Exi ore is mainly composed of hematite, quartz, apatite, and chlorite. The hematite is present as the oolitic layers and in the spaces between the aggregated ooids; quartz exists as granular particles in the spaces and as nucleuses in ooids; the harmful mineral, apatite, is associated with hematite as the oolitic layers, fine dissemination, granular particles in the spaces, and nucleuses in ooids. From the viewpoint of mineral beneficiation, it is hard to separate apatite and chlorite but easy to separate quartz from hematite in the Exi iron ore in recovering the iron values.

关键词： iron ores mineralogy morphology scanning electron microscopy

Update on Fengyun Meteorological Satellite Program and Development

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空间科学学报 2020年第5期40卷 884-897页

作者： zhang Peng CHEN Lin xian Di XU Zhe GUAN min National Satellite Meteorological Center/National Center for Space Weather China Meteorological AdministrationBeijing 100081

China began to develop its meteorological satellite program since *** 50-years’growing,there are 17 Fengyun(FY)meteorological satellites launched *** present,seven of them are in orbit to provide the operational service,including three polar orbiting meteorological satellites and four geostationary meteorological *** last COSPAR report,no new Fengyun satellite has been *** information of the on-orbit FY-2 series,FY-3 series,and FY-4 series has been ***-3D and FY-2H satellites accomplished the commission test and transitioned into operation in ***-2E satellite completed its service to decommission in *** web-based users and Direct Broadcasting(DB)users keep growing worldwide to require the Fengyun satellite data and products.A new Mobile Application Service has been launched to Fengyun users based on the cloud technology in *** this report,the international and regional co-operations to facilitate the Fengyun user community have been addressed *** strengthen the data service in the Belt and Road countries,the Emergency Support Mechanism of Fengyun satellite(FY_ESM)has been established since ***,a Recalibrating 30-years’archived Fengyun satellite data project has been founded since *** project targets to generate the Fundamental Climate Data Record(FCDR)as a space agency response to the Global Climate Observation System(GCOS).At last,the future Fengyun program up to 2025 has been introduced as well.

关键词： Fengyun meteorological satellite Product and data service International co-operation and supporting Historical Chinese Fengyun satellite data recalibrating Future program

Inverse-preserving Linear Maps Between Spaces of Matrices over Fields

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Acta Mathematica Sinica,English Series 2006年第3期22卷 873-878页

作者： xian zhang School of Mathematical Science Heilongjiang University

Suppose F is a field different from F2, the field with two elements. Let Mn（F） and Sn（F） be the space of n × n full matrices and the space of n ×n symmetric matrices over F, respectively. For any G1, G2 ∈ {Sn（F）, Mn（F）}, we say that a linear map f from G1 to G2 is inverse-preserving if f（X）^-1 = f（X^-1） for every invertible X ∈ G1. Let L （G1, G2） denote the set of all inverse-preserving linear maps from G1 to G2. In this paper the sets .L（Sn（F）,Mn（F））, L（Sn（F）,Sn（F））, L （Mn（F）,Mn（F）） and L（Mn （F）, Sn （F）） are characterized.

关键词： Field Inverse-preserving linear map Space of full matrices Space of symmetric matrices

Effect of Sintering Conditions on Structure of Manganese Zinc Ferrite Powders

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Chinese Journal of Aeronautics 2006年第B12期19卷 179-182页

作者： DONG Li-min HAN Zhi-dong WU Ze zhang xian-you College of Materials Science and Engineering Harbin University of Science and Technology Harbin 150040 China

The structures of the Mn-Zn ferrites synthesized under different sintering conditions by the sol-gel method were investigated by the X-ray diffraction （XRD） and the scanning electron microscopy （SEM） with focus on two factors： the pre-sintering treatment and the calcining time. The results show that the sintering conditions have significant effects on the structures and the particle size of the Mn-Zn ferrites. Compared with the products without pre-sintering, those pre-sintered at 500℃ have a single phase and no diffraction peaks of Fe2O3 that could be found. The effects of the pre-sintering temperature on the structures of the ferrites were also studied. As a result, 500℃ proves to be the favorite in the pre-sintering treatment. The XRD patterns of the ferrites calcined at 1 200℃ for 6 h will present diffraction peaks of pure crystallization of spinel phase while those for 2 h or 4 h will show peaks of Fe2O3. The SEM also bears witness to well-grown grains of pure Mn-Zn ferrites if calcined for 6 hours.

关键词： manganese zinc ferrite spinel sol-gel sintering time

Source profiles of particulate organic matters emitted from cereal straw burnings

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Journal of Environmental Sciences 2007年第2期19卷 167-175页

作者： zhang Yuan-xun SHAO min zhang Yuan-hang ZENG Li-min HE Ling-yan ZHU Bin WEI Yong-jie ZHU xian-lei State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences Peking University Beijing 100871 China Shenzhen Graduate School Peking University Shenzhen 518055 China

Cereal straw is one of the most abundant biomass burned in China but its contribution to fine particulates is not adequately understood. In this study, three main kinds of cereal straws were collected from five grain producing areas in China. Fine particulate matters （PMzs） from the cereal straws subjected to control burnings, both under smoldering and flaming status, were sampled by using a custom made dilution chamber and sampling system in the laboratory. Element carbon （EC） and organic carbon （OC） was analyzed. 141 compounds of organic matters were measured by gas chromatography-mass spectrum （GC-MS）. Source profiles of particulate organic matters emitted from cereal straw burnings were obtained. The results indicated that organic matters contribute a large fraction in fine particulate matters. Levoglucosan had the highest contributions with averagely 4.5% in mass of fine particulates and can be considered as the tracer of biomass burnings. Methyloxylated phenols from lignin degradation also had high concentrations in PM2.5, and contained approximately equal amounts of guaiacyl and syringyl compounds. 13-Sitostrol also made up relatively a large fraction of PMz5 compared with the other sterols （0.18%-0.63% of the total fine particle mass）. Normal alkanes, PAHs, fatty acids, as well as normal alkanols had relatively lower concentrations compared with the compounds mentioned above. Carbon preference index （CPI） of normal alkanes and alkanoic acids showed characteristics of biogenic fuel burnings. Burning status significantly influenced the formations of EC and PAHs. The differences between the emission profiles of straw and wood combustions were displayed by the fingerprint compounds, which may be used to identify the contributions between wood and straw burnings in source apportionment researches.

关键词： biomass burning cereal straw particulate organic matter source profile

针刺联合吸入法对阿尔兹海默病模型小鼠的干预作用

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河南中医 2017年第10期37卷 1740-1742页

作者：李南杜彩霞赵献敏张松江李伟王权河南省职工医院河南郑州450000 河南中医药大学河南郑州450046

目的:观察针刺联合吸入法对阿尔兹海默病模型小鼠的干预作用。方法:选取清洁级SD小鼠60只,随机分为空白组、模型组、吸入组、针刺组、针刺+吸入组,每组12只。空白组常规饲养,充足食水,其余各组分别腹腔注射东莨菪碱3 mg·kg-1,日1次,连... 详细信息

目的:观察针刺联合吸入法对阿尔兹海默病模型小鼠的干预作用。方法:选取清洁级SD小鼠60只,随机分为空白组、模型组、吸入组、针刺组、针刺+吸入组,每组12只。空白组常规饲养,充足食水,其余各组分别腹腔注射东莨菪碱3 mg·kg-1,日1次,连续14 d。造模成功后,从第15天开始,吸入组吸入迷迭香精油,针刺组针刺百会、肾俞、血海等穴位,针刺+吸入组给予吸入组和针刺组的治疗方法,连续14 d,末次给药后1 h,旷场实验测试各组小鼠的跨越格数和潜伏期。结果:与模型组比较,吸入组、针刺组第28天旷场实验跨越格数和潜伏期差异有统计学意义(P<0.05),针刺+吸入组治疗后第17天、第21天、第28天跨越格数及潜伏期差异有统计学意义(P<0.05或P<0.01)。结论:迷迭香精油联合针刺对阿尔茨海默病小鼠有一定的改善作用。

关键词：阿尔茨海默病针刺迷迭香精油吸入法小鼠

Markov process functionals in finance and insurance

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Applied Mathematics(A Journal of Chinese Universities) 2009年第1期24卷 21-26页

作者： GENG xian-min LI Liang College of Sci. Nanjing Univ. of Aeronautics & Astronautics Nanjing 210016 China Dept. of Appl. Math. Nanjing Audit Univ. Nanjing 210029 China

The Markov property of Markov process functionals which are frequently used in economy, finance, engineering and statistic analysis is studied. The conditions to judge Markov property of some important Markov process functionals are presented, the following conclusions are obtained： the multidimensional process with independent increments is a multidimensional Markov process; the functional in the form of path integral of process with independent increments is a Markov process; the surplus process with the doubly stochastic Poisson process is a vector Markov process. The conditions for linear transformation of vector Markov process being still a Markov process are given.

关键词： Markov process functional process with independent increments risk process