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党参总皂苷对大鼠局灶性脑缺血性损伤的保护作用

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中国新药与临床杂志 2011年第5期30卷 339-342页

作者：龚其海谭丹枫李菲余兰陈华杨丹莉遵义医学院药理学教研室贵州遵义563000 遵义医学院贵州省基础药理重点实验室贵州遵义563000 遵义医学院药学系贵州遵义563000

目的观察党参总皂苷(TSC)对大鼠局灶性脑缺血性损伤的保护作用,并初探其机制。方法 54只SD大鼠随机分为假手术组、假手术给药组、模型组、治疗组。假手术给药组及治疗组每日1次TSC60mg·kg^(-1)灌胃,假手术组及模型组灌胃等体积的生理盐... 详细信息

目的观察党参总皂苷(TSC)对大鼠局灶性脑缺血性损伤的保护作用,并初探其机制。方法 54只SD大鼠随机分为假手术组、假手术给药组、模型组、治疗组。假手术给药组及治疗组每日1次TSC60mg·kg^(-1)灌胃,假手术组及模型组灌胃等体积的生理盐水,7d后建立大鼠右侧大脑中动脉阻塞(MCAO)的局灶性脑缺血模型,24h后观察各组大鼠死亡率、神经功能症状,2,3,5-三苯基氯化四氮唑(TTC)染色测量脑梗死体积,real time RT-PCR法测定缺血周边区肿瘤生长因子α(Tnf-α)、白细胞介素1β(Il-1β)、环氧酶2(Cox-2)、内皮型一氧化氨合酶(Nos3)及诱导型一氧化氮合酶(Nos2)的mRNA表达。结果 TSC明显降低MCAO所致的死亡率及神经功能评分,并减少脑梗死体积(均P0.05)。结论 TSC对大鼠局灶性脑缺血性损伤有保护作用,其机制与抑制炎症相关基因的mRNA表达有关。

关键词：党参总皂苷脑缺血炎症一氧化氮合酶大鼠

TOTAL ENERGIES AND ELECTRONIC STRUCTURES OF CO_3Ti AND HYDROGENIZED Co_3Ti

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Acta Metallurgica Sinica(English Letters) 1998年第3期11卷 197-201页

作者： S.Q.Duan S.J.Liu b.K.Ma beijing Normal Univ Beijing China

Electronic structure calculations using the tighting-binding linear muffin-tin orbital (Tb-LMTO) method have been performed for Co3Ti and its hydride CO3Ti. The computed values of lattice constants and bulk moduli agree with the experiment values. The theoritical excess enerpy and lattice staid due to hydrogen absorption consequently obtained hem the ab initio results indicate that H has the tendency to stay in Co3Ti and the ionicities of Co atomic spheres due to hydmpen absorption change from the canons to the ations. On the other hand, the changes of band structures due to hydrogenation are found to be remarkable.

关键词： total enerpy electronic structure hydrogenized Co3Ti

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臭虫击倒抗性基因突变检测及抗性测定

环境昆虫学报 2023年第3期45卷 731-739页

作者：李婷曹玉峰王常禄徐业李伟军林莉 abdul Hafiz ab Majid 王松灌王建国江西农业大学入侵生物实验室南昌330045 Department of Entomology RutgersThe State University of New JerseyNew BrunswickNJ 08901USA Household and Structural Urban Entomology Laboratory Vector Control Research UnitSchool of Biological SciencesUniversiti Sains Malaysia11800 MindenPenangMalaysia Institute for Tropical biology and Conservation Universiti Malaysia SabahJalan UMS88400 Kota KinabaluSabah Malaysia

近20多年,臭虫(Cimex spp.)在世界范围内成为常见的卫生害虫,其防治主要采用化学防治,但很多种群发现击倒抗性(Knockdown resistance gene,kdr)基因突变的存在以及抗药性。监测kdr的发生频率以及不同种群对农药的抗性对臭虫有效防治很重... 详细信息

近20多年,臭虫(Cimex spp.)在世界范围内成为常见的卫生害虫,其防治主要采用化学防治,但很多种群发现击倒抗性(Knockdown resistance gene,kdr)基因突变的存在以及抗药性。监测kdr的发生频率以及不同种群对农药的抗性对臭虫有效防治很重要,但我国对臭虫种群的抗药性报道很少。本试验采用点滴法测定了1个温带臭虫Cimex lectularius野外种群对氯虫苯甲酰胺、呋虫胺、吡虫啉、噻虫嗪和高效氯氰菊酯等5种药剂的毒性及抗性水平,使用区分剂量快速鉴定抗性方法对2个温带臭虫和2个热带臭虫Cimex hemipterus种群对高效氯氰菊酯的抗性水平进行了检测,此外用PCR方法检测8个臭虫地理种群(1个温带臭虫实验室种群,1个温带臭虫野外种群和6个热带臭虫野外种群)174个个体的kdr突变频率。点滴法结果表明,5种杀虫剂对温带臭虫的毒性是吡虫啉和呋虫胺>噻虫嗪>氯虫苯甲酰胺和高效氯氰菊酯,测试的野外温带臭虫种群仅对噻虫嗪无明显抗性。热带臭虫2个野外种群对高效氯氰菊酯的抗性均远高于温带臭虫。在温带臭虫的实验室种群中未检测到突变,在野外种群中检测到了V419L和L925I突变,可分为2种基因型类型(A:无突变位点;b:同时有L925I和V419L),而在热带臭虫的6个种群检测到M918I和L1014F突变,只有1种基因型类型,即M918I和L1014F双位点突变。温带臭虫1个野外种群及热带臭虫6个野外种群kdr突变的存在与臭虫对高效氯氰菊酯敏感密切关联。基于kdr基因突变检测结果推测我国臭虫种群广泛存在对拟除虫菊酯的抗性。

关键词：温带臭虫热带臭虫击倒抗性基因

MCM-41 Single Crystal of Hexagonal Circular bicone with Pseudo-Singular Surface and Morphogenesis

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MCM-41 Single Crystal of Hexagonal Circular Bicone with Pseu...

Fault Diagnosis Expert Database System For Sewage Treatment

11th Conference on Solid State Chemistry and Inorganic Synthesis Joint with 2th Dalton Transactions International Symposium

作者： Juanjuan Qi~(ab),Haiming Nan~a,Qiang Cai~(a,*),Dongyao Xu~b, Hengde Li~a a Department of Materials Science and Engineering, Tsinghua University,beijing 100084,P.R.China b School of Chemical & Environmental Engineering, China University of Mining and Technology(beijing),beijing 100083,P.R.China

In this paper,a novel crystal form of hexagonal circular bicone of MCM-41 crystal(Fig.1a～1e,1f) which is the combination forms of hexagonal bipyramid form and circular bicone form that has never been defined in tradi... 详细信息

关键词： MCM-41 Single Crystal of Hexagonal Circular bicone with Pseudo-Singular Surface and Morphogenesis

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Fault Diagnosis Expert Database System For Sewage Treatment

New methods for identification of disinfection byproducts of toxicological relevance: Progress and future directions

首届亚洲机械电子学学术会议

作者： Fang Peng~a Dagui Huang~a Deyin Zhang~(ab) a School of Mechatronics engineering,University of Electronic Science and Technology of China,Chengdu,610054,China b School of flight technology and aeronautics engineering,Aviation Flight University of China,Guanghan,618307,China

Design and implement of a fault diagnosis expert database system for daily rulming sewage treatment is discussed in this *** the association technology of Artificial Intelligence(AI)and Data base (Db),a Knowledge base(Kb)was established in this system according to the information from fault tree analysis and frame analysis *** and deep inference strategies are used together in inference *** strong Db technology of borland C++ builder,we successfully develop a fault diagnosis expert system with friendlier man-machine interface,which is easier to use than others.

关键词： Fault Diagnosis Expert System Knowledge base Inference Machine Sewage Treatment

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Journal of Environmental Sciences 2021年第1期33卷 151-159页

作者： Nicholas J.P.Wawryk Caley b.Craven Lindsay K.Jmaiff blackstock Xing-Fang Li Division of Analytical and Environmental Toxicology Department of Laboratory Medicine and PathologyFaculty of Medicine and DentistryUniversity of AlbertaEdmontonABT6G 2G3Canada

Disinfection byproducts(DbPs)represent a ubiquitous source of chemical exposure in disinfected *** over 700 DbPs have been identified,the drivers of toxicity remain poorly ***,ever evolving water treatment practices have led to a continually growing list of *** of analytical technologies have enabled the identification of new classes of DbPs and the quantification of these chemically diverse sets of *** we summarize advances in new workflows for DbP analysis,including sample preparation,chromatographic separation with mass spectrometry(MS)detection,and data *** aid in the selection of techniques for future studies,we discuss necessary considerations for each step in the *** review focuses on how each step of a workflow can be optimized to capture diverse classes of DbPs within a single ***,we highlight new MS-based approaches that can be powerful for identifying novel DbPs of toxicological *** discuss current challenges and provide perspectives on future research directions with respect to studying new DbPs of toxicological *** analytical technologies continue to advance,new strategies will be increasingly used to analyze complex DbPs produced in different treatment processes with the aim to identify potential drivers of toxicity.

关键词： Water disinfection byproducts(DbPs) Emerging contaminants Mass spectrometry Chromatography Nontargeted analysis Toxicity drivers

The Molecular Structure and Potential Energy Function for Ne-HF System

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原子与分子物理学报 1999年第3期16卷 36-41页

作者： HUANG Zheng a, RAN Ming b, ZHU Zheng he b (a. Department of Applied Physics Southwest Jiaotong University, Chengdu 610031, China b. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China) Department of Applied Physics Southwest Jiaotong University Chengdu 610031 China Department of Chemistry Sichuan Normal University Chengd 610066 China Institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China

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１ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｉｎｆｌｕｅｎｃｅｏｆｒａｒｅ－ｇａｓａｔｏｍｓｔｏｔｈｅｖｉｂｒａｔｉｏｎａｌｐｏｐｕｌａｔｉｏｎｏｆＨＦｉｓｉｍｐｏｒｔａｎｔｔｏｔｈｅｃｈｅｍｉｃａｌｏｖｅｒｔｏｎｅＨＦｌａｓｅｒｓ．Ｉｎｐｒｅｓｅｎｔｐａｐｅｒ...

关键词： Ne-HF ab initio Many-body expansion theory Analytical potential energy function

Progress in carbon dioxide separation and capture: A review

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Journal of Environmental Sciences 2008年第1期20卷 14-27页

作者： Hongqun Yang Zhenghe Xu Maohong Fan Rajender Gupta Rachid b Slimane Alan E bland Ian Wright Department of Chemical and Materials Engineering University of Alberta EdmontonABT6G2G6 Canada School of Materials Science and Technology Georgia Institute of Technology Atlanta GA 30332 USA Gas Technology Institute Des Plaines IL 60018 USA Western Research Institute Laramie Wyoming 82072 USA Oak Ridge National Laboratory P.O. Box 2008 Oak Ridge TN 37831 USA

This article reviews the progress made in CO2 separation and capture research and engineering. Various technologies, such as absorption, adsorption, and membrane separation, are thoroughly discussed. New concepts such as chemical-looping combustion and hydrate-based separation are also introduced briefly. Future directions are suggested. Sequestration methods, such as forestation, ocean fertilization and mineral carbonation techniques are also covered. Underground injection and direct ocean dump are not covered.

关键词： coal flue gas carbon dioxide sorbent absorption adsorption membrane separation sequestration

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废弃黄麻与聚酯混纺新技术

国际纺织导报 2017年第2期45卷 24-26,28页

作者： A.b.Siddique T.Stegmaier 王芳芳（译） bGMEA时尚与技术大学(bUFT)(孟加拉国) 邓肯道夫纺织与工艺研究所(ITV)(德国) 不详

同棉纤维一样,虽然黄麻纤维可加工性好,生产的纱线可达预期效果,但纺纱系统中每天浪费的纤维高达2%~7%。研究的主要目的旨在高效利用废弃黄麻,从而实现黄麻工业的可持续发展。由于废弃黄麻纤维具有长度较小、尾端较细的特点,故将其作为... 详细信息

同棉纤维一样,虽然黄麻纤维可加工性好,生产的纱线可达预期效果,但纺纱系统中每天浪费的纤维高达2%~7%。研究的主要目的旨在高效利用废弃黄麻,从而实现黄麻工业的可持续发展。由于废弃黄麻纤维具有长度较小、尾端较细的特点,故将其作为原料与聚酯纤维混纺。试验加工了11种不同线密度、不同混纺比的聚酯和黄麻混纺纱。11种纱线中,线密度为30/1tex和30/2tex,聚酯与黄麻混纺比为70∶30的纱线呈现出良好的性能。

关键词：黄麻聚酯混纺纱线性能