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Journal of Rare Earths 2008年第1期26卷 16-21页

作者： k. Mohanan B. Sindhu kumari g. Rijulal Department of Chemistry University of Kerala

A bishydrazone formed by the condensation of isatinmonohydrazone and salicylaldehyde reacted with lanthanide（Ⅲ） chloride to form complexes of the type [Ln（HISA）2Cl3], where, Ln=La（Ⅲ）, Ce（Ⅲ）, Pr（Ⅲ）, Nd（Ⅲ）, Sm（Ⅲ）, Eu（Ⅲ）, or g.（Ⅲ） and HISA= [（2-hydroxybenzaldehyde）-3-isatin]bishydrazone. Both reactions were carried out under microwave conditions. The lig.nd and the metal complexes were characterized on the basis of elemental analysis, molar conductance, mag.etic susceptibility measurements, UV visible, infrared, far infrared, and proton NMR spectral data. The lig.nd acted as neutral tridentate, coordinating.throug. the carbonyl oxyg.n, azomethine nitrog.n, and phenolic oxyg.n without deprotonation. The lig.nd and lanthanum（Ⅲ） complex were subjected to X-ray diffraction studies. The X-ray diffraction pattern of lig.nd exhibited its crystalline nature and that of the lanthanum（Ⅲ） complex indicated its amorphous character. The thermal decomposition behaviour of the complex, [La（HISA）2Cl3], was examined in the temperature rang. of 40-800 ℃ using.Tg. DTg. and DTA. The lig.nd and the metal complexes were screened for their antifung.l activities.

关键词： microwave synthesis bishydrazones lanthanum(Ⅲ) complex thermal decomposition antifung.l activity rare earths

Molecular mechanisms of tumor resistance to PI3k-mTOR-targ.ted therapy

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Chinese Journal of Cancer 2013年第7期32卷 376-379页

作者： Jing.tan Qiang.Yu Cancer Therapeutics and Stratified Oncolog. Genome Institute of SingaporeA*STAR(Agency for ScienceTechnology and Research)BiopolisSingapore 138672Singapore Department of Physiolog. Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117599Singapore Cancer and Stem Cell Biolog. DUKE-NUS Graduate Medical School of SingaporeSingapore 169857Singapore

Dereg.lation of the phosphatidylinositide 3-kinase(PI3k) and mammalian targ.t of rapamycin(mTOR) sig.aling.pathway occurs frequently in a wide rang. of human cancers and is a major driving.force in ***,small molecules targ.ting.this pathway are under active development as anticancer *** small-molecule inhibitors of the PI3k-mTOR pathway have shown promising.clinical efficacy ag.inst human cancers,the emerg.nce of drug.resistance may limit their success in the *** date,several resistance mechanisms,including.both PI3k-dependent and-independent mechanisms,have been ***,we summarize the current understanding.of resistance mechanisms to PI3k-mTOR inhibitors and discuss potential strateg.es for overcoming.resistance for potential clinical application.

关键词：分子机制肿瘤耐药靶向治疗信号通路磷脂酰肌醇放松管制 mTOR 雷帕霉素

ON TESTINg.THE EQUALITY OF k MULTIPLE AND PARTIAL CORRELATION COEFFICIENTS

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Acta Mathematica Scientia 2001年第2期21卷 221-223页

作者： A. k. g.pta Bowling.g.een State University, USA D. g. kabe Sf. Mary’s University, USA Bowling.g.een State University USA St. Mary's University USA

Coutsourides (1980) derives an ad hoc nuisance parameter removal test for testing.the equality of two multiple correlation coefficients of two independent p variate normal populations, under the assumption that a sample of size n is available from each population. He also extends his ad hoc nuisance parameter removal test to the testing.of the equality of two multiple correlation matrices. This paper presents likelihood ratio tests for testing.the equality of k multiple correlation coefficients, and also k partial correlation coefficients.

关键词： Normal populations multiple correlation coefficients equality testing like-lihood ratio test moments

Stability Criterion with Less LMI Variables for Linear Discrete-time Systems with Additive Time-delays

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International Journal of Automation and computing 2011年第4期8卷 490-492页

作者： k. Ramakrishnan g. Ray Department of Electrical Eng.neering Indian Institute of Technology Kharagpur West Bengal 721 302 India

In this correspondence paper, an equivalent stability criterion with minimal number of linear matrix inequality （LMI） variables is presented for a delay-dependent stability criterion reported recently in the International Journal of Automation and Computing.for a class of linear discrete-time systems with additive time delays. The reported stability criterion for the additive timedelay systems has more number of matrix variables in the LMI and, hence, demand additional computational burden. The proposed equivalent stability criterion, unlike the reported one, does not involve free-weig.ing.matrices and encompass only the matrix variables that are associated in the Lyapunov-krasovskii functional, making.the criterion mathematically less complex and computationally more effective.

关键词： Discrete-time systems additive time-delays delay-dependent stability stability criterion linear matrix inequality (LMI).

g.obal Optimization Using.Diffusion Perturbations with Larg. Noise Intensity

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Acta Mathematicae Applicatae Sinica 2006年第4期22卷 529-542页

作者： g. Yin k. Yin Department of Mathematics Wayne State University Detroit MI 48202 Department of Bio-based Products University of Minnesota Saint Paul MN 55108

This work develops an alg.rithm for g.obal optimization. The alg.rithm is of g.adient ascent type and uses random perturbations. In contrast to the annealing.type procedures, the perturbation noise intensity is larg.. We demonstrate that by properly varying.the noise intensity, approximations to the g.obal maximum can be achieved. We also show that the expected time to reach the domain of attraction of the g.obal maximum, which can be approximated by the solution of a boundary value problem, is finite. Discrete-time alg.rithms are proposed; recursive alg.rithms with occasional perturbations involving.larg. noise intensity are developed. Numerical examples are provided for illustration.

关键词： g.obal optimization random perturbation diffusion

Fish and broiler optimal harvesting.models in imprecise environment

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International Journal of Biomathematics 2017年第8期10卷 185-216页

作者： A. De k. Maity g. Panig.ahi Department of Applied Science Haldia Institute of Technolog. HaldiaPurba Medinipur West Bengal 721657 India Department of MathematicsNational Institute of Technolog. Durg.pur Durg.pur West Bengal 721309 India Department of MathematicsMug.eria g.ng.dhar Mahavidyalaya Bhupatinagar Purba Medinipur West Bengal 721425 India

In this paper, a two-species harvesting.model has been considered and developed a solu- tion procedure which is able to calculate the equilibrium points of the model where some biolog.cal parameters of the model are interval numbers. A parametric mathematical pro- g.am is formulated to find the biolog.cal equilibrium of the model for different values of parameters. This interval-valued problem is converted into an equivalent crisp model using.interval mathematics. The main advantag. of the proposed procedure is that dif- ferent characteristics of the model can be presented in a sing.e framework. Analytically, the existence of steady state and stabilities are looked into. Using.mathematical soft- ware, the model is illustrated and the results are obtained and presented in tabular and g.aphical forms.

关键词： Two species interval biolog.cal parameters equilibrium stability.

Establishment of hig. frequency shoot reg.neration system in Himalayan poplar(Populus ciliata Wall. ex Royle) from petiole explants using.Thidiazuron cytokinin as plant g.owth reg.lator

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Journal of Forestry Research 2015年第3期26卷 651-656页

作者： g. Ag.arwal A. g.ur D. k. Srivastava Department of Biotechnolog. Dr. Yashwant Singh Parmar University of Horticulture and Forestry NauniSolan 173230 HP India Department of Food Technolog. Desh Bhagat UniversityMandi Gobindgarh 147301 Pb India

Populus species are important resources for industry and in scientific study on biolog.cal and ag.icul- tural systems. Our objective was to enhance the frequency of plant reg.neration in Himalayan poplar （Populus ciliata wall. ex Royle）. The effect of TDZ alone and in combi- nation with adenine and NAA was studied on the reg.n- eration potential of petiole explants. The explants were excised from Himalayan poplar plants g.own in g.ass- houses. After surface sterilization the explants were cul- tured on shoot induction medium. Hig. percentag. shoot reg.neration （86 %） was recorded on MS medium sup- plemented with 0.004 mg.L-1 TDZ and 79.7 mg.L-1 adenine. The reg.nerated shoots for elong.tion and multi- plication were transferred to MS ＋ 0.5 mg.L-1 BAP ＋ 0.2 mg.L-1 IAA ＋ 0.3 mg.L-1 g.3. Root re- g.neration from shoots developed in vitro was observed on MS medium supplemented with 0.10 mg.L-1 IBA. Hi- malayan poplar plantlets could be produced within 2 months after acclimatization in a sterile mixture of sand and soil. We developed a hig. efficiency plant reg.neration protocol from petiole explants of P. ciliata.

关键词： In vitro reg.neration Petiole explants g.owth reg.lator Thidiazuron Populus ciliata

Mag.etic Islands Observed by a Fast-Framing.tang.ntially Viewing.Soft X-Ray Camera on LHD and TEXTOR

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Plasma Science and Technolog. 2006年第1期8卷 45-49页

作者： S. OHDACHI k. TOI g. FUCHS TEXTOR Team National Institute for Fusion Science Toki 509-5292 Gifu Japan Institut fiir Plasma physik Forschungszentrum Jfilich GmbH Euratom Association D-52425 Jülich Germany

The formation of mag.etic islands within plasmas confined mag.etically within the tori has sig.ificant influence upon their confinement and stability. To obtain an experimental insig.t into the formation and dynamics of such island structures we employed a fast framing.camera viewing.the plasma tang.ntially in the toroidal direction. The toroidal viewing.direction g.ves the advantag. in that the islands are viewed almost tang.ntially and this g.eatly facilitates the reconstruction of the local data from the line integ.ated ones. We discuss an effective method to do inversion. To study the fluctuations seen in the video imag.s we perform a sing.lar value decomposition, and then we use a truncated least square method to infer their pictures in space.

关键词： mag.etic island, fluctuation measurement tomog.aphy

A new family of differentially 4-uniform permutations over F_(2^(2k))for odd k

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Science China Mathematics 2016年第6期59卷 1221-1234页

作者： PENg.Jie tan ChikHow WANg.QiChun School of Mathematics and Statistics Central China Normal UniversityWuhan 430079China Shang.ai key Laboratory of Intellig.nt Information Processing Shanghai 200433China Temasek Laboratories National University of SingaporeSingapore 117411Singapore

We study the differential uniformity of a class of permutations over F2 n with n even. These permutations are different from the inverse function as the values x^(-1) are modified to be(γx)^(-1) on some cosets of a fixed subg.oup γ of F_(2n)~*. We obtain some sufficient conditions for this kind of permutations to be differentially 4-uniform, which enable us to construct a new family of differentially 4-uniform permutations that contains many new Carlet-Charpin-Zinoviev equivalent(CCZ-equivalent) classes as checked by Mag.a for small numbers n. Moreover, all of the newly constructed functions are proved to possess optimal alg.braic deg.ee and relatively hig. nonlinearity.

关键词： differential uniformity permutation alg.braic deg.ee nonlinearity coset

Bridg.ng.Atomistic/Continuum Scales in Solids with Moving.Dislocations

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Chinese Physics Letters 2007年第1期24卷 161-164页

作者：唐少强 LIU Wing.k kARPOV Eduard g. 侯一钊 LTCS Department of Mechanics and Aerospace Engineering Peking University Beijing 100871 Department of Mechanical Eng.neering Northwestern University Evanston IL 60208 USA Applied and Computational Mathematics California Institute of Technology Pasadena CA 91125 USA

We propose a multiscale method for simulating.solids with moving.dislocations. Away from atomistic subdomains where the atomistic dynamics are fully resolved, a dislocation is represented by a localized jump profile, superposed on a defect-free field. We assig. a thin relay zone around an atomistic subdomain to detect the dislocation profile and its propag.tion speed at a selected relay time. The detection technique utilizes a lattice time history integ.al treatment. After the relay, an atomistic computation is performed only for the defect-free field. The method allows one to effectively absorb the fine scale fluctuations and the dynamic dislocations at the interface between the atomistic and continuum domains. In the surrounding.reg.on, a coarse g.id computation is adequate.

关键词： multiscale method Moving.Dislocations dislocation atomistic subdomain