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The Weakly Potency of Certain HNN Extensions of Nilpotent Groups

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Algebra Colloquium 2014年第4期21卷 689-696页

作者： k.b. Wong P.C. Wong Institute of Mathematical Sciences University of Malaya 50603 Kuala Lumpur Malaysia

In this paper we give a characterization for certain HNN extensions oi suogroup separable groups with normal associated subgroups to be weakly potent. We then apply our result to show that certain HNN extensions of fi... 详细信息

关键词： weakly potent HNN extensions subgroup separable finitely generated nilpo-tent groups

APPLICATION OF Ct-PARAMETER FOR CREEP-FATIGUE CRACk GROWTH WITH SLOW LOAD RISING CONDITION

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Acta Metallurgica Sinica(English Letters) 1999年第1期12卷 22-30页

作者： Lee, J.H. Yoon, k.b. kim, Y.J. back, U.b. korea Inst of Nuclear Safety Taejon South Korea

Most of the assessment equations for Ct which is a wellknown fracture parameter characterizing high temperature crack growth rates, have limited applicability to constant load conditions after sudden loading. However, crack growth due to creep can also occur under load varying conditions when load rising time is so long that accumulated creep deformation near the crack tip is not *** this paper, the estimation equation of the Ctparameter which can be applied to the case of slow load rising, i.e., (Ct)r, is explained. And the correlation between (Ct)r at the end of the load increasing period and Ct at the beginning of the succeeding load hold period is discussed. Finite element analyses of several cases with various loading conditions were performed and results were presented to show the effectiveness of the proposed Ct estimation scheme. The general applicability of the equation is also discussed.

关键词： creep fatigue crack time dependent fracture mechanics Ctparameter,C*integral

Formulation and evaluation of novel aspirin nanoparticles loaded suppositories

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Journal of Chinese Pharmaceutical Sciences 2013年第3期22卷 259-267页

作者： Ravi Sankar V. Dhachinamoorthi D. Chandra Shekar k.b. Department of Pharmaceutics C.E.S College of Pharmacy Departments of Pharmaceutics Q.I.S College of Pharmacy Department of Chemistry J.N.T.A University

The main objective of the present work is to design aspirin nanoparticles loaded suppositories which will reduce the side effects caused by aspirin suppositories. Aspirin nanoparticles were prepared initially based on ionic-gelation mechanism and lyophilized. The prepared nanoparticles were evaluated, and the results confirmed that Fa9 formulation was the best with greater drug entrapment efficiency. Aspirin suppositories were prepared in order to investigate the best base composition. The prepared suppositories were evaluated and FS1, FS3, FS4, FSS, FS1 l, and FS12 were proved to be the best base compositions based on dissolution performed. The lyophilized aspirin nanoparticles of Fa9 were used to prepare aspirin nanoparticles loaded suppositories. The in vitro results revealed that Fasl 1 was the best formulation.

关键词： Suppositories Ionic-gelation method Rectal carcinoma Aspirin Lyophilization

A NOVEL SYNTHETIC METHOD FOR THE CLUSTERS FeCo_2(CO)_9- (RCCR)(R=MeO_2C,EtO_2C).X-RAY CRYSTAL STRUCTURE ANALYSESOF THE CLUSTERS FeCo_2(CO)_9(MeO_2CCCCO_2Me) and Co_4(CO)_(10)-(EtO_2CCCCO_2Et)

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Chinese Chemical Letters 1996年第6期7卷 585-588页

作者： Wu H.P. Yin Y.Q. Yu k.b. Huang X.Y. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 Chengdu Anal. Determination Center Chinese Academy of Sciences Chengdu 610041 Fuzhou Inst. Res. Struct. of Matter Chinese Academy of Sciences State Key Lab. of Struct. Chemistry Fuzhou 350002

A novel synthetic method for the clusters FeCo2(CO)9(RCCR)(R=MeO2C,MeO2C), which isthe reaction of Co4(CO)10(RCCR) with Na2[Fe(CO)4], have been found by studying on tile thermal reactionbetween RCCo3(CO)9 with Na2[Fe(CO)4]. X-ray crystal structural determinations have been made for theclusters FeCo2(CO)9(MeO2CCCCO2Me) and Co4(CO)10(EtO2CCCCO2Et)

关键词： CO FeCo2 RCCR ANALYSES CLUSTERS

STUDY ON REACTION OF (μ_3-CCO_2Et)CO_2M(CO)_8(CpMe)(M=Mo,W) WITH Na_2[Fe(CO)_4].SYNTHESIS OF TWO kINDS OF THE NOVEL CLUSTERS EtO_2CCFeCoM(CO)_8(CpMe)H AND (OCC)FeCoM(CO)_8(CpMe)

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Chinese Chemical Letters 1996年第4期7卷 381-384页

作者： Wu H.P. Ding E.R. Yin Y.Q. Huano X.Y. Yu k.b. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 Fuzhou Inst. on Structure of Matter Stn. Key Lab. of Structure Chemistry Fuzhou 350002 Chengdu Ctr. of Anal. and Msrmt. Chinese Academy of Sciences Chengdu 610041

The reactions of dusters (μ3- CCO2Et)Co2M (CO)8(MeCp)[M = Mo(2a),W(2b)], derived from the reaction of (μ3-CCO2Et)Co3(CO)9 with Na[M(CO)3(MeCp)], with Na2[Fe(CO)4] in THF at reflux not only gave the expected metal fragment exchange products (μ3-CCO2Et) FeCoM (CO)6(Me-Cp )H [M=Mo(3a), W(3b)] but also produced the unexpected compounds (μ3-CCO)FeCoM (CO)5(MeCp) [M=MO(4a), W(4b)]. It is suggested that the formation of two kinds of compounds resulted from two competitive reactions of the intermediates [(μ3-CCO2Et) FeCo M(CO)8,(MeCp)] with 11+: the one is the Protonic reaction of the intermediate giving the cluster 3a,b; the another one is the intermolecular nucleophilic substitution reaction of the intermediate under the H+ catalytic action giving the cluster 4a,b.

关键词： CARbONYL CLUSTERS

STUDY ON THE PRObLEMS OF CONTACT IN THE NUMERICAL SIMULATION OF SHEET FORMING

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Acta Metallurgica Sinica(English Letters) 2000年第2期13卷 459-464页

作者： k.F. Zhang, F.X. Diao, Q.F. Song, W. Wu, k.b. Chen and T.Xie Harbin Institute of Technology, Harbin 150001, China

This study is concerned with the problems of contact in the process of numerical simulation of sheet metal forming in rigid visco-plastic shell FEM. In respect of analysis of sheet deep drawing process,for the tool model described by triangular elements, a kind of contact judging algorithm about the correlation between the node of deformed mesh and the triangular element of a tool is presented. In SPF/Db Lagrangian multiplier method is adopted to solve the contact problem between deformed meshes, and a new reliable practical dynamic contact checking algorithm is presented. As computation examples, the simulation results of metal sheet deep drawing and SPF/Db are introduced in this paper.

关键词： kcontact search algorithm rigid visco-plastic shell FEM Lagrangian multiplier method sheet metal forming

A Common Fixed Point Theorem for Compatible Mappings of Type （k） in Intuitionistic Fuzzy Metric space

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Journal of Mathematics and System Science 2015年第11期5卷 474-479页

作者： k.b. Manandhar k. Jha Department of Natural Sciences (Mathematics) School of Science Kathmandu University Dhulikhel Nepal.

The purpose of our paper is to obtain a common fixed point theorem for two pairs of self-mappings of compatible of type （k） in a complete intuitionistic fuzzy Metric space with example. Our result generalized and im... 详细信息

关键词： Compatible mappings Compatible mappings of type (k) and common fixed point.

Extreme ultraviolet radiation for coherent diffractive imaging with high spatial resolution

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Science China(Physics,Mechanics & Astronomy) 2010年第6期53卷 1065-1067页

作者： L.V. DAO S. TEICHMANN b. CHEN R.A. DILANIAN k.b. DINH P. HANNAFORD Centre for Atom Optics and Ultrafast Spectroscopy Swinburne University of Technology Australian Research Council Centre of Excellence for Coherent X-Ray Science School of Physics University of Melbourne

Using different noble gases,argon,neon and helium,we are able to generate by high-harmonic generation(HHG) just a few harmonic orders in the spectral range 10-35 nm with a photon flux of～2.10 12 photons/(harmonic cm2 s) for argon and～10 10 photons/(harmonic cm2 s) for helium. The few-harmonic-order radiation is used for coherent diffractive imaging directly without any spectral filter. A spatial resolution of～100 nm is achieved using a～30 nm HHG source.

关键词： laser applications high harmonic generation coherent diffractive imaging

论战后德国的马克思、黑格尔和批判哲学--与伊林·费切尔的谈话

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世界哲学 2012年第3期 133-147页

作者： k.b.安德森[美] 金寿铁(译) 美国普渡大学政治系

本文包括采访者关于伊林·费切尔生平和著作的一个导论以及与费切尔的一次谈话和注释。在采访中,费切尔讨论了马克思主义、黑格尔主义、卢卡奇和法兰克福学派的关系以及他的阿尔都塞批判。费切尔是当今有关苏联和马克思主义思想的最著... 详细信息

本文包括采访者关于伊林·费切尔生平和著作的一个导论以及与费切尔的一次谈话和注释。在采访中,费切尔讨论了马克思主义、黑格尔主义、卢卡奇和法兰克福学派的关系以及他的阿尔都塞批判。费切尔是当今有关苏联和马克思主义思想的最著名的德国专家,在这次谈话中,他首次详尽讲述了自己对政治学和马克思学的独创性学术贡献。

关键词：马克思黑格尔批判理论结构主义民主生态学