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Investigation of a New Formula for Gurney Velocity Estimation

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火炸药学报 2018年第4期41卷 340-344页

作者： Tamer Elshenawy Ahmed Elbeih qing ming li Gamal M. Abdo Technical Research Centre Cairo Egypt Military Technical College Kobry Elkobbah Cairo Egypt The University of Manchester School of Mechanical Aerospace and Civil Engineering Manchester UK Mechanical Engineering Department Modern Acade

The formula for the analytical calculations of the shaped charge jetting parameters exhibit an explicit dependence upon the Gurney velocity of an explosive *** attempts have been done to approximate the characteristic constant 2E^(1/2) and to make its use more *** is shown herein that the characteristic Gurney velocity parameter depends on the ratio of the Chapman Jouguet-pressure to explosive impulse ratio by the formula:2E^(1/2)=0.2415(P_(CJ)/I_(SP)ρ_0)-970.76,where PCJis the Chapman Jouguet pressure(Pa),ISPis the specific impulse of the explosive used as a monopropellant(N·s/kg)andρois the explosive density(kg/m^3).The proposed empirical formula was found to be reasonable and quite accurate approximation that can be implemented over a wide range of explosives,where the maximum deviation between the measured and the calculated Gurney velocities was nearly 6%.Besides,the proposed approach has been used analytically to calculate the jet tip velocity of a small caliber shaped charge,which is measured *** difference between the measured and the calculated jet tip velocity was only 1.6%.

关键词：火药理论研究化学分析

Interactive Effects of Drought Stresses and Elevated CO_2 Concentration on Photochemistry Efficiency of Cucumber Seedlings

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Journal of Integrative Plant Biology 2008年第10期50卷 1307-1317页

作者： qing-ming li Bin-Bin liu Yang Wu Zhi-Rong Zou College of Horticulture Northwest A&F University Yangling 712100 China State Key Laboratory of Soil Erosion and Dryland Farming of the Loess Plateau Institute of Soil and Water Conservation the Chinese Academy of Sciences Yangling 712100 China College of Horticultural Science and Engineering Shandong Agricultural University Tai'an 271018 China

To reveal and quantify the interactive effects of drought stresses and elevated CO2 concentration [CO2] on photochemistry efficiency of cucumber seedlings, the portable chlorophyll meter was used to measure the chlorophyll content, and the Imaging-PAM was used to image the chlorophyll fluorescence parameters and rapid light response curves （RLC） of leaves in two adjacent greenhouses. The results showed that chlorophyll content of leaves was reduced significantly with drought stress aggravated. Minimal fluorescence （Fo） was increased while maximal quantum yield of PSII （Fv/Fm） decreased significantly by severe drought stress. The significant decrease of effective quantum yield of PSII （Y（Ⅱ）） accompanied by the significant increase of quantum yield of regulated energy dissipation （Y（NPQ）） was observed under severe drought stress condition, but there was no change of quantum yield of nonregulated energy dissipation （Y（NO））. We detected that the coefficient of photochemical quenching （qP） decreased, and non-photochemical quenching （NPQ） increased significantly under severe drought stress. Furthermore, we found that maximum apparent electron transport rate （ETRmax） and saturating photosynthetically active radiation （PPFDsat） decreased significantly with drought stress aggravated. However, elevated [CO2] significantly increased FvlFm, qP and PPFDsat, and decreased NPQ under all water conditions, although there were no significant effects on chlorophyll content, Fo, Y（Ⅱ）, Y（NPQ）, Y（NO） and ETRmax. Therefore, it is concluded that CO2-fertilized greenhouses or elevated atmospheric [CO2] in the future could be favorable for cucumber growth and development, and beneficial to alleviate the negative effects of drought stresses to a certain extent.

关键词： chlorophyll fluorescence cucumber seedlings drought stresses elevated CO2 concentration photochemistry efficiency.

Facile synthesis of 9-(N-amino-4-fluoromethyl-3-pyrrolidinyl)-2-fluoro-6-aminopurine from trans-4-hydroxy-L-proline

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Chinese Chemical Letters 2007年第11期18卷 1313-1315页

作者： Ye qing li ming Lu Chun Xu Lu Sai Jian Zhu Qi Fa liu Chemical Engineering College Nanjing University of Science and Technology Nanjing 210094 PR China

A novel and simple procedure for synthesis of azanucleoside by Mitsunobu reaction between N-（p-nitrobenzyloxycarbonyl）- trans-4-hydroxy-D-proline methyl ester obtained from trans-4-hydroxy-L-proline after six-step reaction and 2-fluoro-6-azidopurine is described, and azanucleoside is fluorinated by new fluridizer 2,2-difluoro-1,3-dimethylimidazolidine （DFI）. All reactions could be carried out under mild condition.

关键词： trans-4-Hydroxy-D-proline 2-Fluoro-6-azidopurine Fluoride azanucleosides Mitsunobu reaction DFI

Mechano-electric Effect of Hardened Cement Paste During Quasi-static Loading

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Journal of Wuhan University of Technology(Materials Science) 2001年第4期16卷 83-85页

作者：孙明清 Wuhan Univ Technol Dept Engn Mech Wuhan 430070 Peoples R China

Mechano-electric effect of cement paste was investigated in this paper. As compressive stress was applied on the specimen, an electrical current was observed. The intensity of the electrical current increased with stress increasing, and decreased with stress decreasing. Different measurement methods were also discussed in this paper. This phenomenon was related to the electrokinetic phenomenon of solid/liquid interface in cement paste. The study on mechano-electric effect of hardened cement paste provides a new method for making smart concrete structures.

关键词： cement paste mechano-electric effect smart concrete

Two new C18-norditerpenoid alkaloids from Aconitum delavayi

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Chinese Chemical Letters 2007年第4期18卷 409-411页

作者： Shan Hao Jiang Hai qing Wang Yi ming li Shuang Jun lin Jun Jie Tan Da Yuan Zhu State Key Laboratory of Drug Research Institute of Materia Medica Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 201203 China

Further phytochemical investigation of the unique C 18-norditerpenoid alkaloids from the roots ofAconitum delavayi Franch led to the isolation of two new norditerpenoid alkaloids, delavaconitine F 1 and delavaconitine... 详细信息

关键词： Aconitum delavayi Ranunculaceae Norditerpenoid alkaloid Delavaconitine F Delavaconitine G

Indoleamine 2,3-Dioxygenase in Endometriosis

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Reproductive and Developmental Medicine 2019年第2期3卷 110-116页

作者： Hui-li Yang ming-qing li Laboratory for Reproductive Immunology Insitute of Obstetrics and GynecologyHospital of Obstetrics and GynecologyFudan UniversityShanghai 200080China Laboratory for Reproductive Immunology Shanghai Key Laboratory of Female Reproductive Endocrine Related DiseasesHospital of Obstetrics and GynecologyFudan UniversityShanghai 200011China Laboratory for Reproductive Immunology NHC Key Lab of Reproduction RegulationShanghai Institute of Planned Parenthood ResearchFudan UniversityShanghai 230032China

Endometriosis(EMS)is a chronic inflammatory and estrogen-dependent gynecological disease characterized by the presence of endometrial tissue outside the uterine *** it is a benign disease,EMS is tumor-like in several aspects,which include unrestrained growth,decreased apoptosis,and aggressive *** involves endocrine disorders and immunological *** 2,3-dioxygenase(IDO)is an intracellular enzyme that catalyzes the initial and rate-limiting step of the metabolism of *** is a potential candidate facilitating EMS *** IDO expression in both eutopic and ectopic endometria of women with EMS is biologically important in aspects,which include regulation of endometrial stromal cell function and modulation of adjacent local immunocytes to generate a supportive *** turn,the expression of IDO can be regulated by the complex endocrine-immune microenvironment networks in endometrial ***,we systematically review the roles of IDO in EMS to explore its pathological implications and treatment potential.

关键词： Endometrial Stromal Cells Endometriosis Immunocytes Indoleamine 2,3-Dioxygenase

SYNTHESIS OF ACYCliC CROWN ETHERS WITH 1-METHYliMIDAZOLE-2-THIO END GROUPS

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Chinese Chemical Letters 1992年第4期3卷 239-240页

作者： qing Jian liU~*, ming li SHI Department of Chemistry. Shandong Normal University, Jinan, 250014

The synthesis of new acyclic crown ethers 1, 2, and 3 with methimazole as terminal group is reported.

关键词： SYNTHESIS OF ACYCliC CROWN ETHERS WITH 1-METHYliMIDAZOLE-2-THIO END GROUPS

Immune Regulation at Maternal-fetal Interface in Early Pregnancy

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Reproductive and Developmental Medicine 2017年第1期1卷 36-44页

作者： Wen-Jie Zhou ming-qing li Da-Jin li Laboratory for Reproductive Immunology Key Laboratory of Reproduction Regulation of NPFPCSIPPRIRDFudan UniversityShanghai 200011China Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases Shanghai 200011China Hospital of Obstetrics and Gynecology Fudan UniversityShanghai 200011China

Decidual immune cells(DICs),including T-cells,regulatory T-cells,macrophages/dendritic cells,natural killer cells,and neutrophils,are resident at the maternal-fetal interface,and play vital roles in regulating trophoblast migration,decidual angiogenesis,immune tolerance,placentation,and decidualization during the early *** researches have revealed that these maternal DICs cooperated with each other,or with maternal decidual stromal cells,or with fetal-derived trophoblasts,and further formed a special maternal-fetal cross talk at the maternal-fetal interface,which was essential for the construction and maintenance of physiological *** aberrant cross talk and immune regulation arise,many pregnancy complications will inevitably occur,such as spontaneous abortion,intrauterine growth restriction(IUGR),preeclampsia(PE),and preterm ***,we reviewed how critical immune cells are either enriched or excluded from the decidua,how their function is regulated within the decidua,and how they variously contribute to pregnancy success or failure.

关键词： Cross Talk Decidual Immune Cells Decidual Stromal Cells Pregnancy Trophoblastic Cells

Innate Lymphoid Cells in Normal Pregnancy and Pregnancy-Related Diseases

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Reproductive and Developmental Medicine 2020年第1期4卷 53-59页

作者： Cheng-Jie Wang Yi Yu ming-qing li Wei-Rong Gu Laboratory for Reproductive Immunology Shanghai Key Laboratory of Female Reproductive Endocrine Related DiseasesObstetrics and Gynecology Hospital of Fudan UniversityShanghai 200011China Department of Obstetrics Obstetrics and Gynecology Hospital of Fudan UniversityShanghai 200011China Laboratory for Reproductive Immunology Institute of Obstetrics and GynecologyObstetrics and Gynecology Hospital of Fudan UniversityShanghai 200082China Laboratory for Reproductive Immunology NHC Key Laboratory of Reproduction Regulation(Shanghai Institute of Planned Parenthood Research)Fudan UniversityShanghai 230032China

Innate lymphoid cells(ILCs)are a group of lymphocytes without diversified antigen receptors encoded by gene rearrangement on T and B ***,which are tissue-resident innate immune cells,expressed particularly in the mucosa or the barrier surface,contribute to the formation of lymphoid organs,the maintenance of tissue homeostasis,and the regulation of antimicrobial *** has been recently reported that ILCs were enriched at the maternal-fetal *** a successful pregnancy,the maternal immune system must tolerate a fetus as an *** the new defined of ILCs,a number of studies have shown that three types of ILCs are involved in embryonic development and pregnancy maintenance as well as the occurrence and development of pregnancy-related *** article reviews the types and roles of ILCs in normal pregnancy and pregnancy-related diseases.

关键词： Immune Innate Lymphoid Cells Maternal-Fetal Interface Pregnancy