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Many-body Interatomic Potentials for Computer Simulation of Physical Processes in Metals and Alloys

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Journal of Materials Science & Technology 1998年第5期14卷 429-433页

作者： Kuznetsov, V.M. Rudenskii, G.e. Kadyrov, R.I. Kaminskii, P. Institute of Strength Physics and Material Science Russian Academy of Sciences Siberian Branch Academicheskii av. 2/1 634048 Tomsk Russian Federation

A model of binding forces in metals and alloys, based on the density functional theory and accounted effects of the many-body interactions, was proposed. The developed method can be easily applied for study of metals and alloys by the molecular dynamics simulation. The potentials of interatomic interactions have been found by the proposed method and applied for calculations of equation of state, elastic moduli and phonon dispersion in metals Ni, Al, and alloys NiAl, Ni//3Al. Results of the calculations are in good agreement with known experimental data both for pure metals and alloys. (edited author abstract) 16 Refs.

关键词： Nickel

Study of electronic and magnetic properties of MnS layers

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Chinese Physics B 2012年第12期21卷 408-411页

作者： R.Masrour e.K.Hlil M.Hamedoun A.Benyoussef O.Mounkachi Laboratory of Materials ProcessesEnvironment and QualityCady Ayyed UniversityNational School of Applied SciencesSafiMorocco LMPHe(URAC 12) Faculty of ScienceMohammed V-Agdal UniversityRabatMorocco Institut Neel CNRS et Universite Joseph FourierBP 166F-38042 Grenoble Cedex 9France Institute of Nanomaterials and Nanotechnologies MAScIRRabatMorocco HassanⅡAcademy of Science and Technology RabatMorocco

Self-consistent ab initio calculations, based on the density functional theory （DFT） and using the full potential linear augmented plane wave （FLAPW） method, are performed to investigate both electronic and magnetic properties of the MnS layers. Polarized spin and spin-orbit coupling are included in the calculations within the framework of the antiferromagnetic state between two adjacent Mn layers. Magnetic moments considered to lie along axes are computed. Obtained data from ab initio calculations are used as input data for the high temperature series expansion （HTSe） calculations to compute other magnetic parameters. The zero-field high temperature static susceptibility series of the spin-4.39 nearest-neighbour Heisenberg model on centred face cubic （FCC） and lattices is thoroughly analysed by a power series coherent anomaly method （CAM）. The exchange interactions between the magnetic atoms, the N@el temperature, and the critical exponent associated with the magnetic susceptibility are obtained for the MnS layer.

关键词： MnS layers electronic and magnetic structure magnetic moment N^el temperature,exchange interactions

课程改革中教师成为学习领导者的路径探索——基于一项实证研究的探讨

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教师教育研究 2014年第1期26卷 86-91页

作者：曾艳黎万红卢乃桂上海师范大学教育学院上海200234 香港中文大学教育学院北京师范大学教师教育研究中心北京100875

新课程改革要求教师成为学习领导者,这首先要求教师成为自身学习的领导者。但在现实的改革情境中,教师究竟如何成为学习领导者?本研究以北京两所小学为个案,通过对校长、教学主任、骨干教师、普通教师等43人次的访谈,呈现了课程改革中... 详细信息

新课程改革要求教师成为学习领导者,这首先要求教师成为自身学习的领导者。但在现实的改革情境中,教师究竟如何成为学习领导者?本研究以北京两所小学为个案,通过对校长、教学主任、骨干教师、普通教师等43人次的访谈,呈现了课程改革中教师成为学习领导者的不同发展路向,展现多重情境因素如何影响教师开展学习领导实践。研究发现,自上而下的改革为教师转变为学习领导者注入内在动力、提供变革契机,但同时,国家主导教师学习目标阻碍着初萌学习领导意识的教师成长为真正成熟的学习领导者。在自上而下的改革理路中,教师能否将个人能动性汇聚形成互惠的共同目标成为教师突破结构限制、成长为真正的学习领导者的关键所在。

关键词：学习的领导教师领导教师学习教研组骨干教师

伊曲康唑和两性霉素B耐药株葡萄状维朗那霉菌导致的皮肤暗色丝孢霉病

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世界核心医学期刊文摘（皮肤病学分册） 2006年第6期2卷 58-59页

作者： lo Y.-H. 张路坤不详

Background: Although the dematiaceous fungus Veronaea botryosa is rarely encountered clinically, it can be pathogenic. Methods: A patient with a history of diabetes mellitus, coronary artery disease, and Cushing’s syndrome had recurrent multifocal, crusted, brownish-red noduloplaques on the right forearm, left upper limb, and right knee. A skin biopsy was obtained for histopathology and fungal cultures. Results: The histopathology showed brownish hyphae and yeast like cells scattered in granulomatous infiltrates. Slide cultures revealed erect and straight conidiophores with two celled cylindrical conidia, which have round tops and truncated bases. The fungus was identified as Veronaea botryosa. The disease slowly progressed despite a 6-month itraconazole regimen (200 mg daily). Subsequent use of Amphoterecin B produced only mild clinical improvements. Susceptibility tests showed resistance to both agents. Conclusions: Cutaneous phaeohyphomycosis caused by V. botryosa is extremely rare. Antifungal susceptibility tests are important for choosing the appropriate drug and predicting the clinical outcome.

关键词：暗色丝孢霉病口服伊曲康唑两性霉素B 霉菌感染葡萄组织病理学检查抗真菌药敏试验耐药株皮肤冠状动脉疾病

Heat transfer study on solid and porous convective fins with temperature-dependent heat generation using efficient analytical method

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Journal of Central South University 2014年第12期21卷 4592-4598页

作者： S.e.Ghasemi P.Valipour M.Hatami D.D.Ganji Young Reseachers and elite Club Qaemshahr Branch Islamic Azad University Department of Textile and Apparel Qaemshahr Branch Islamic Azad University Department of Mechanical engineering Esfarayen University of Technology Department of Mechanical engineering Babol University of Technology

A simple and highly accurate semi-analytical method, called the differential transformation method(DTM), was used for solving the nonlinear temperature distribution equation in solid and porous longitudinal fin with temperature dependent internal heat generation. The problem was solved for two main cases. In the first case, heat generation was assumed variable by fin temperature for a solid fin and in second heat generation varied with temperature for a porous fin. Results are presented for the temperature distribution for a range of values of parameters appearing in the mathematical formulation(e.g. N, εG, and G). Results reveal that DTM is very effective and convenient. Also, it is found that this method can achieve more suitable results in comparison to numerical methods.

关键词： heat transfer convective fin solid and porous fin heat generation analytical method thermal analysis

Cu-Zn-Al形状记忆合金在马氏体状态的塑性变形

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金属学报 1989年第3期25卷 A179-A184页

作者：张一 e.HORNBOGeN 上海钢铁研究所 Institute for Materials Ruhr-University Bochum F.R.G.

采用光学显微镜、电子显微镜、电阻和膨胀方法研究了三种Cu-Zn-Al形状记忆合金在马氏体状态的塑性变形对马氏体转变温度、相变过程及转变循环滞后的影响。其中两种合金相变温度较高,在室温下即为马氏体状态。第三种合金A_f温度远低于室... 详细信息

采用光学显微镜、电子显微镜、电阻和膨胀方法研究了三种Cu-Zn-Al形状记忆合金在马氏体状态的塑性变形对马氏体转变温度、相变过程及转变循环滞后的影响。其中两种合金相变温度较高,在室温下即为马氏体状态。第三种合金A_f温度远低于室温。讨论了“第一次循环效应”的可能机制。

关键词： Cu-Zn-Al合金形状记忆合金变形

Bibliometric evaluation of the status of Picea research and research hotspots:comparison of China to other countries

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Journal of Forestry Research 2020年第4期31卷 1103-1114页

作者： Guozhen Duan Yu'e Bai Dongmei Ye Tao Lin Peng Peng Min Liu Shulan Bai College of Forestry Inner Mongolia Agricultural University275 Xueyuan StreetHohhot 010019People’s Republic of China

Picea *** are important components of boreal and subalpine *** have a wide geographical range in the Northern Hemisphere,extending from the eurasian continent to North *** this study,publications on Picea species from 2002 to 2016 were identified via the Web of Science(WoS)and the China National Knowledge Infrastructure(CNKI)databases,and subjected to relationship network visualization using CiteSpace *** study represents the first such analysis of Picea and provides a reference for bibliometrics in forest tree species *** results show that the total number of publications on Picea archived in WoS was20,958 and that the number of papers published annually has increased over time,peaking at 1725 in *** studies were mainly conducted in North America,europe and Asia;among them,Canada published the most papers and showed the strongest betweenness centrality(0.11).Among research institutions,the Swedish University of Agricultural Sciences in Uppsala had the highest publication *** research contributions of the Chinese Academy of Sciences,the Chinese Academy of Forestry,and Beijing Forestry University have improved rapidly in recent years,greatly enhancing the international impact of Chinese research in this *** research contents were grouped into five categories:forest ecosystems,pest resistance,extraction and functional analyses of active ingredients from various plant organs,nursery and afforestation techniques,and timber quality *** China,the number of papers from the CNKI database was4532,increasing at an even *** research topics on Picea included forest ecosystems,seedling and afforestation techniques,basic studies on individual species and populations,and pests and *** and outside China,hotspots in Picea research included the relationships between Picea and environmental factors,and the genomic sequences of Picea.

关键词： Picea Bibliometrics Hotspots Web of science Chinese National Knowledge Infrastructure

Isolation and identifi cation of antimicrobial metabolites from sea anemone-derived fungus emericella ***01

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Journal of Oceanology and Limnology 2021年第3期39卷 1010-1019页

作者： Yang YUe Huahua YU Rongfeng LI Linfeng HU Song LIU Rong’e XING Pengcheng LI Key Laboratory of experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Drugs and Bioproducts Pilot Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China School of Chemistry and Chemical engineering Henan Institute of Science and TechnologyXinxiang 453003China

Marine symbiotic fungi represent an intriguing source of discovery of novel secondary metabolites with various biological *** anemones are benthic marine invertebrates,however,the cultivable symbiotic fungi residing in the sea anemones are paid few attentions compared to those derived from their cnidarian *** we show the identification of antimicrobial secondary metabolites from the sea anemone-derived symbiotic *** offive isolated fungal strains,only the strain SMA01 showed strong antimicrobial activities,which was assigned into the genus emericella based on the morphological characteristics and the ITS *** swift from liquid fermentation to solid rice medium presented little influence on its antibacterial activity.A chemical investigation of the ethyl acetate extract of the emericella ***01 led to discovery of the primary antibiotic metabolite phenazine-1-carboxylic *** IC_(50) values of the phenazine-1-carboxylic acid against Phytophthora capsici,Gibberella zeae,and Verticillium dahliae were determined to be 23.26-53.89μg/*** the best of our knowledge,this was the first report of emericella *** sea *** current study may benefit understanding of the defensive chemical interactions between the symbiotic fungi and their host sea anemones.

关键词： sea anemone symbiotic fungi phenazine-1-carboxylic acid antimicrobial activity

Preparation,characterization,and antifungal evaluation of a new type of aminourea chitooligosaccharide derivatives

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Journal of Oceanology and Limnology 2020年第3期38卷 841-850页

作者： ZHU Jun LIU Song QIN Yukun XING Rong’e YU Huahua CHeN Xiaolin LI Pengcheng Key Laboratory of experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Drugs and Bioproducts Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China

Phytopathogenic fungi cause heavy negative impact on the agricultural economy,but most existing fungicides are toxic and pose a threat to both human health and environments.A green and efficient fungicide is urgently ***(COSs),the degradation products of natural polysaccharide chitosan,are nontoxic and biodegradable antifungal *** this study,a novel type of aminourea chitooligosaccharide derivatives(AUCOS)was synthesized by successively grafting a hydrazine group and an amine-carbonyl group onto a chitooligosaccharide backbone to enhance the antifungal capability of *** structures of the target compounds were identified by FTIR,1H NMR,and 13C NMR,and the degree of substitution of each product was calculated from the results of the elemental *** antifungal activities of the prepared chitooligosaccharide derivatives against Fusarium solani,Verticillium albo-atrum and Phytophthora capsici were tested in *** AUCOSs had better inhibitory efficiencies against the three plant pathogen fungi than that of chitooligosaccharide,of which aminourea chitooligosaccharide 2(AUCOS2)was the most promising antifungal compound,whose highest inhibition rates were 60.12%,82.95%,and 85.23%against ***,***-atrum and ***,*** synthesized derivatives have good application prospects in crop protection and deserve further research.

关键词： chitooligosaccharide(COS) aminourea characterization antifungal