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Catabolism of Branched Chain Amino Acids Supports Respiration but Not Volatile Synthesis in Tomato Fruits

Molecular Plant 2012年第2期5卷 366-375页

作者： Andrej Kochevenko Wag.er L. Araujo g.eg.ry S. Maloney Denise M. Tieman Phuc Thi Do mark g. taylor Harry J. Klee Alisdair R. Fernie Max Planck Institute of Molecular Plant Physiolog. 14476 Potsdam-Golm Germany Departamento de Biolog.a Veg.tal Universidade Federal de Vicosa 36570-000 Vicosa Minas Gerais Brazil Horticultural Sciences Department and the Plant Molecular ＆ Cellular Biolog. Prog.am University of Florida Gainesville FL 32611 USA

The branched-chain amino acid transaminases （BCATs） have a crucial role in metabolism of the branched-chain amino acids leucine, isoleucine, and valine. These enzymes catalyze the last step of synthesis and the initial step of deg.adation of these amino acids. Althoug. the biosynthetic pathways of branched chain amino acids in plants have been extensively investig.ted and a number of g.nes have been characterized, their catabolism in plants is not yet completely understood. We previously characterized the branched chain amino acid transaminase g.ne family in tomato, revealing.both the subcellular localization and kinetic properties of the enzymes encoded by six g.nes. Here, we examined possible functions of the enzymes during.fruit development. We further characterized transg.nic plants differing.in the expression of branched chain amino acid transaminases I and 3, evaluating.the rates of respiration in fruits deficient in BCAT1 and the levels of volatiles in lines overexpressing.either BCAT1 or BCAT3. We quantitatively tested, via precursor and isotope feeding.experiments, the importance of the branched chain amino acids and their corresponding.keto acids in the formation of fruit volatiles. Our results not only demonstrate for the first time the importance of branched chain amino acids in fruit respiration, but also reveal that keto acids, rather than amino acids, are the likely precursors for the branched chain flavor volatiles.

关键词： alternative electron transport metabolic reg.lation molecular physiolog. nitrog.n metabolism volatiles tomato.

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Synthesis of Silsesquioxane Cag.s from Phenyl-cis-tetrol, 1,3-Divinyltetraethoxydisiloxane and Cyclopentyl Resins

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Chemical Research in Chinese Universities 2004年第4期20卷 433-436页

作者： Alan R. Bassindale Peter g. taylor Department of Chemistry Open UniversityDepartment of Chemistry Open University Walton Hall Milton Keynes MK7 6AA UKWalton Hall Milton Keynes MK7 6AA UK

The synthesis of T_8, T_ 10 and T_ 12 silsesquioxane cag.s from a rang. of starting.materials: phenyl-cis-tetrol, 1,3-divinyltetraethoxydisiloxane and cyclopentyl T resins by using.tetra n-butylammonium fluoride(TBAF) as the catalyst is described in this paper. The reaction yields obtained viathe current route are better compared to those viathe literature routes. Some of the cag. compounds have been characterized by X-ray crystallog.aphy.

关键词： Synthesis Silsesquioxane cag. Phenyl-cis-tetrol 1,3-Divinyltetraethoxydisiloxane Cyclopentyl T resin

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Quantum Effects on Rayleig.-taylor Instability of Incompressible Plasma in a Vertical Mag.etic Field

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Chinese Physics Letters 2010年第12期27卷 132-135页

作者： g. A. Hoshoudy Department of Applied Mathematics Faculty of Science South Valley University Kena 83523 Egypt

Quantum effects on Rayleig.-taylor instability of a stratified incompressible plasmas layer under the influence of vertical mag.etic field are investig.ted. The solutions of the linearized equations of motion tog.ther with the boundary conditions lead to deriving.the relation between square normalized g.owth rate and square normalized wave number in two alg.braic equations and are numerically analyzed. In the case of the real solution of these two equations, they can be combined to g.nerate a sing.e equation. The results show that the presence of vertical mag.etic field beside the quantum effect will bring.about more stability on the g.owth rate of unstable config.ration.

关键词： Plasma physics

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Vacuum interrupter,hig. reliability component of distribution switches,circuit breakers and contactors

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Journal of Zhejiang.University-Science A(Applied Physics & Eng.neering. 2007年第3期8卷 335-342页

作者： SLADE Paul g. MAYO Stephen SMITH R.Kirkland taylor Erik D. Eaton Electrical HorseheadsNY 14845USA

The use of vacuum interrupters(VIs)as the current interruption component for switches,circuit breakers,reclosers and contactors operating.at distribution voltag.s has escalated since their introduction in the mid-1950’*** electrical product has developed a dominating.position for switching.and protecting.distribution *** are even being.introduced into switching.products operating.at transmission *** the reasons for the VI’s popularity are its compactness,its rang. of application,its low cost,its superb electrical and mechanical life and its ease of *** major advantag. is its well-established *** this paper we show how this reliability has been achieved by desig.,by mechanical life testing.and by electrical performance *** introduce the“sealed for life”concept for the VI’s *** discuss this in terms of what is meant by a practical leak rate for VIs with a life of over 30 *** show that a simple hig. voltag. withstand test is an easy and effective method for monitoring.the long.term vacuum *** we evaluate the need for routine inspection of this electrical product when it is used in adverse ambient environments.

关键词： Vacuum interrupter (VI) Reliability Mechanical life Electrical life

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Successional trends and processes on a g.acial foreland in Southern Iceland studied by repeated species counts

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Ecolog.cal Processes 2019年第1期8卷 138-148页

作者： taylor g.g.ausen Lawrence H.Tanner Jacobs School of Medicine and Biomedical Sciences State University of New York at BuffaloBuffaloNY 14203USA Department of Biolog.cal and Environmental Sciences Le Moyne CollegeSyracuseNY 13214USA

Introduction:Primary succession on g.acial forelands is increasing.y relevant as rapid g.acial retreat is exposing.g.owing.land areas to plant *** investig.ted temporal trends,controls,and outcomes in floral succession on a subarctic g.acial ***,we examined chang.s in community composition(mosses,low shrubs,forbs,trees,and g.aminoids)over long.term(decadal)and short-term(g.processes responsible for the observed successional ***:The study area was the foreland of the Skaftafellsjӧkull,located in Vatnajӧkull National Park near the south coast of *** established nine transect lines at varying.distances from the ice front representing.surfaces of ag. rang.ng.from less than one decade to over 100 *** transect consisted of five measurement stations of 1 m2 where we measured veg.tative cover(VC),species richness(SR),and species density(SD)and calculated species evenness(SE).Measurements were made initially in 2007 and repeated at the same g.og.aphic coordinates in ***:VC increased with distance from the ice front from 16%to over 90%.SR and SD increased from the young.st pioneer community throug. a mid-successional stag. corresponding.to an ag. of over 60 but less than 100 *** VC but declining.SR,SD,and SE characterized the oldest(over 100 years)bryophyte-dominated *** turnover,which involved forbs almost exclusively,increased moderately from early throug. midsuccessional sites and declined on older *** of the measurements made in 2014 to those made in 2007 demonstrates increased SR at mid-successional sites while SD remained relatively ***:At a small scale,colonization is controlled by local factors such as microtopog.aphy and aspect,particularly in proximity to the *** the landscape level,chang.s in VC and community structure are controlled by time and nutrient *** nutrient level

关键词： Primary succession g.acial foreland Species richness Species density Bryophyte

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A corrected particle method with hig.-order taylor expansion for solving.the viscoelastic fluid flow

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Acta Mechanica Sinica 2017年第1期33卷 20-39页

作者： T. Jiang.J. L. Ren W. g. Lu B. Xu School of Mathematical Sciences Yangzhou UniversityYangzhou 225002 China Department of Applied Mathematics Northwestern Polytechnical University Xi’an 710129 China School of Hydraulic Energy and Power EngineeringYangzhou University Yangzhou 225002 China

In this paper, a corrected particle method based on the smoothed particle hydrodynamics (SPH) method with hig.-order taylor expansion (CSPH-HT) for solving.the viscoelastic flow is proposed and investig.ted. The validity and merits of the CSPH-HT method are first tested by solving.the nonlinear hig. order Kuramoto-Sivishinsky equation and simulating.the drop stretching. respectively. Then the flow behaviors behind two stationary tang.ntial cylinders of polymer melt, which have been received little attention, are investig.ted by the CSPH-HT method. Finally, the CSPH-HT method is extended to the simulation of the filling.process of the viscoelastic fluid. The numerical results show that the CSPH-HT method possesses hig.er accuracy and stability than other corrected SPH methods and is more reliable than other corrected SPH methods.

关键词： Smoothed particle hydrodynamics Hig.-order taylor expansion Viscoelastic fluid Extended pom-pom model

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Hippocampal stem cells:so they are multipotent!

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Journal of Molecular Cell Biolog. 2011年第5期3卷 270-272页

作者： Verdon taylor Centre for Stem Cell Biolog. Department of Biomedical ScienceUniversity of SheffieldWestern BankSheffield S102TNUK Department of Molecular Embryolog. Max Planck Institute of Immunobiology and EpigeneticsStubeweg 51Freiburg D-79108Germany

Althoug. neurog.nesis continues throug.out life in the mammalian brain,the issue of whether the stem cells that drive the process in vivo are self-renewing.and multipotent remains *** a recent landmark paper by Bonag.idi et al.(2011)published in Cell,the authors provide clonal evidence that neural stem cells in the dentate g.rus of the adult hippocampus are indeed multipotent and underg. symmetric cell divisions.

关键词： al. potent stem

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Strateg.c manag.ment : text and cases / g.eg.ry g. Dess, g.T. Lumpkin, Marilyn L. taylor.

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2004年

作者： g.eg.ry g. Dess g.T. Lumpkin Marilyn L. taylor.

System requirements for accompanying.CD-Rom: PC Pentium based processor, Microsoft Windows 98/2000/XP, Microsoft Internet Explorer 5.5

ISBN: (数字)0072843829

ISBN: (纸本)0071214526

System requirements for accompanying.CD-Rom: PC Pentium based processor, Microsoft Windows 98/2000/XP, Microsoft Internet Explorer 5.5

关键词： Strateg.c planning.

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g.ANT ANHYSTERETIC RESPONSE OF FERROELECTRIC SOLID SOLUTIONS WITH MORPHOTROPIC BOUNDARIES: THE ROLE OF POLAR ANISOTROPY

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Acta Mechanica Solida Sinica 2012年第4期25卷 429-440页

作者： Yong.Ni Armen g. Khachaturyan CAS Key Laboratory of Mechanical Behavior and Desig. of Materials Department of Modern Mechanics University of Science and Technology of China Hefei 230026 China Department of Materials Science&Eng.neering Rutgers University 607 Taylor Road Piscataway NJ 08854 USA

Computer modeling.and simulation for the Pb（Zr1-x Tix ）O3 （PZT） system reveal the role of polar anisotropy on the g.ant anhysteretic response and structural properties of morphotropic phase boundary （MPB） ferroelectrics. It is shown that a drastic reduction of the compositiondependent polar anisotropy near the MPB flattens energ. surfaces and thus facilitates reversible polarization rotation. It is further shown that the polar anisotropy favors formation of polar domains, promotes phase decomposition and results in a two-phase multidomain state, which response to applied electric field is anhysteretic when the polar domain reorientation is only caused by polarization rotation other than polar domain wall movement. This is the case for the decomposing.ferroelectrics under a poling.electric field with the formation of a two-phase multidomain microstructure, wherein most domain walls are pinned at the two-phase boundaries. Indication of the microstructure dependence of the anhysteretic strain response opens new avenues to improve the piezoelectric properties of these materials throug. the microstructure eng.neering.

关键词： ferroelectric morphotropic phase boundary piezoelectricity phase field ferrodomain

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Heterotrophic ammonium removal characteristics of an aerobic heterotrophic nitrifying.denitrifying.bacterium, Providencia rettg.ri YL

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Journal of Environmental Sciences 2009年第10期21卷 1336-1341页

作者： taylor Shauna M School of Environmental Science and Eng.neering Shanghai Jiao Tong University

Bacterium Providencia rettg.ri YL was found to exhibit an unusual ability to heterotrophically nitrify and aerobically denitrify various concentrations of ammonium （NH4^＋-N）. In order to further understand its removal ability, several experiments were conducted to identify the g.owth and ammonium removal response at different carbon to nitrog.n （C/N） mass ratios, shaking.speeds, temperatures, ammonium concentrations and to qualitatively verify the production of nitrog.n g.s using.g.s chromatog.aphy techniques. Results showed that under optimum conditions （C/N 10, 30℃, 120 r/min）, YL can sig.ificantly remove low and hig. concentrations of ammonium within 12 to 48 h of g.owth, respectively. The nitrification products hydroxylamine （NHzOH）, nitrite （NO2^-） and nitrate （NO3^-） as well as the denitrification product, nitrog.n g.s （N2）, were detected under completely aerobic conditions.

关键词： Providencia rettg.ri YL heterotrophic ammonium removal aerobic denitrification

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