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Brai.s wi.h Tri.i.l Si.ple Centrali.er

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Algebra Colloqui.m 2015年第4期22卷 561-566页

作者： U. Ali.F. Azam i. Javai. A. Hai.er Center for Advanced Studi.s i. Pure and Appli.d Mathemati.s Bahauddi. Zakari.a Uni.ersi.y Multan Pakistan Department of Mathemati.s Jazan University Jazan Saudi Arabia

i. thi. paper, we prove that the n-si.ple brai. di.i.i.le by the generators xi.for all 2 ≤ i.≤n - 2 has tri.i.l si.ple centrali.er. Consequently, the commuti.g graph defi.ed on the set of si.ple brai.s i. di.connect... 详细信息

关键词： si.ple brai. si.ple centrali.er commuti.g graph

An Extracti.n of the Domi.ant Rotor-Stator i.teracti.n Modes by the Use of Proper Orthogonal Decomposi.i.n (POD)

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Journal of Thermal Sci.nce 2006年第2期15卷 109-114页

作者： i. TREBi.JAC N. ROCHUON G. Bi.LONNET Ecole Centrale de Lyon Laboratoi.e de Mécani.ue des Flui.es et d'Acousti.ue UMR CNRS 5509 69131 Ecully Cedex France ONERA Département d'Aérodynami.ue Appli.uée 92322 Chtillon Cedex France

The Proper Orthogonal Decomposi.i.n method i. appli.d to the i.stantaneous veloci.y fi.ld wi.hi. the rotor-stator i.ter-row regi.n of a hi.h-speed hi.h-pressure centri.ugal compressor. The processed data come from experi.ents and numeri.al si.ulati.ns. i. compari.on wi.h a Fouri.r transform, the POD gi.es the best modal approxi.ati.n for both i.i.i.l fi.lds, i. terms of the energy expressed on any gi.en number of modes to be taken i.to account： to reach 98% of the total energy of the veloci.y fi.ld, the requi.ed number of POD modes i. around ni.e ti.es smaller than the number of Fouri.r harmoni.s. The i.di.i.ual POD modes are gi.en and show that the unsteady rotor-stator i.teracti.n i. already present i. the very fi.st modes.

关键词： rotor stator i.teracti.n proper orthogonal decomposi.i.n POD

Opti.i.ati.n of the fuel rod＇s arrangement cooled by turbulentnanoflui.s flow i. pressuri.ed water reactor (PWR)

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Chi.ese Journal of Chemi.al Engi.eeri.g 2017年第6期25卷 722-731页

作者： M. Hatami.MJ.Z. Ganfi.i. Sohrabi.sl D. Ji.g i.ternati.nal Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'anJiaotong University Xi'an 710049 China Department of Mechani.al Engi.eeri.g Esfarayen University of Technology Esfarayen North Khorasan lran Department of Renewable Energi.s Engi.eeri.g Faculty of New Sdences & Technologies University of Tehran Tehran lran Department of Mechani.al Engi.eeri.g Babol University of Technology Babol lran

i. thi. paper, response surface methodology(RSM) based on central composi.e desi.n(CCD) i. appli.d to obtai. an opti.i.ati.n desi.n for the fuel rod's di.meter and di.tance cooled by turbulent Al_2O_3–water nanoflui. for a typi.al pressuri.ed water reactor(PWR). Fuel rods and nanoflui. flow between them are si.ulated 3D usi.g computati.nal flui. dynami.s(CFD) by ANSYS-FLUNET package software. The RNG k–ε model i. used to si.ulate turbulent nanoflui. flow between the rods. The effect of di.ferent nanoparti.les concentrati.n i. also i.vesti.ated on the Nusselt number from heat transfer effi.i.ncy vi.w poi.t. Results reveal that when di.tance parameter(a) i. i. the mi.i.um level and di.meter parameter(r) i. i. the maxi.um possi.le level, cooli.g the rods wi.l be better due to hi.her Nusselt number i. thi. si.uati.n. Also, usi.g the di.ferent nanoparti.les on the cooli.g process confi.ms that Al_2O_3 averagely 17% and Ti._2 10% i.prove the Nusselt numbers.

关键词： Opti.i.ati.n Fuel rods Nanoflui. Pressuri.ed water reactor

Dysregulati.n of mTOR acti.i.y through LKB1 i.acti.ati.n

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Chi.ese Journal of Cancer 2013年第8期32卷 427-433页

作者： Wei.Zhou Adam i. M arcus Paula M. Verti.o The Wi.shi. Cancer i.sti.ute Emory University School of Medicine Department of Hematology and Oncology Emory University School of Medicine Department of Pathology and Laboratory Medi.i.e Emory University School of Medicine Department of Radi.ti.n Oncology Emory University School of Medicine

Mammali.n target of rapamyci. (mTOR) i. aberrantly acti.ated i. many cancer types, and two rapamyci. deri.ati.es are currently approved by the Food and Drug Admi.i.trati.n (FDA) of the Uni.ed States for treati.g renal cell carci.oma. Mechani.ti.ally, mTOR i. hyperacti.ated i. human cancers ei.her due to the geneti. acti.ati.n of i.s upstream acti.ati.g si.nali.g pathways or the geneti. i.acti.ati.n of i.s negati.e regulators. The tumor suppressor li.er ki.ase B1 (LKB1), also known as seri.e/threoni.e ki.ase 11 (STK11), i. i.volved i. cell polari.y, cell detachment and adhesi.n, tumor metastasi., and energeti. stress response. A key role of LKB1 i. to negati.ely regulate the acti.i.y of mTOR complex 1 (mTORC1). Thi. revi.w summari.es the molecular basi. of thi. negati.e i.teracti.n and recent research progress i. thi. area.

关键词： mTOR 基因激活丝氨酸苏氨酸激酶失活失调活性信号转导通路雷帕霉素

Ozone formi.g potenti.l and sulfur effects on i.-use vehi.les of the metropoli.an area of Mexi.o Ci.y

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Journal of Zheji.ng Uni.ersi.y-Sci.nce A(Appli.d Physi.s & Engi.eeri.g) 2006年第3期7卷 463-471页

作者： SCHi.TER i. DíAZ L. LOPEZ-SALi.AS E. i.sti.uto Mexi.ano del Petróleo Estudios Ambientales Eje Central Lázaro Cárdenas No. 152 San Bartolo Atepehuacan México D.F. 07730 Mexico

The largest urban areas of Mexi.o ci.i.s have wi.nessed hi.h levels of ai. polluti.n i. the past few decades. The most i.portant ai. pollutants are ozone and pani.ulate matter wi.h levels that are sti.l far above current ai. quali.y standard. i. thi. work we studi.d exhaust and evaporati.e emi.si.ns of Mexi.o Ci.y metropoli.an area （MAMC） vehi.les usi.g fuels i. whi.h sulfur content was vari.d from 89×10^-6 to 817×10^-6, and calculated the ozone formi.g potenti.l of emi.si.ns as well as the speci.i. reacti.i.y of the exhaust for each average fleet-fuel combi.ati.ns. Data on emi.si.n levels were compared to those obtai.ed i. 2000 for the same vi.tage of vehi.les. The almost twofold i.crease i. emi.si.ns found could be due to degradati.n of the exhaust emi.si.ns control systems.

关键词： Fuel formulati.n Ozone formi.g potenti.l Vehi.les emi.si.ns Mexi.o

Recombi.ati.n-i.dependent Mechani.ms and Pai.i.g of Homologous Chromosomes duri.g Mei.si. i. Plants

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Molecular Plant 2014年第3期7卷 492-501页

作者： Oli.i.r Da i.es Mari. E. Gallego Charles i. Whi.e Geneti.ue Reproduction et Developpement UMR CNRS 6293 Clermont UniversitY INSERM U1103 63171 Aubiere France

Mei.si. i. the speci.li.ed eukaryoti. cell di.i.i.n that permi.s the halvi.g of ploi.y necessary for game- togenesi. i. sexually reproduci.g organi.ms, Thi. i.volves a si.gle round of DNA repli.ati.n followed by two successi.e di.i.i.ns. To ensure balanced segregati.n, homologous chromosome pai.s must mi.rate to opposi.e poles at the fi.st mei.ti. di.i.i.n and thi. means that they must recogni.e and pai. wi.h each other beforehand. Although understandi.g of the mechani.ms by whi.h mei.ti. chromosomes fi.d and pai. wi.h thei. homologs has greatly advanced, i. remai.s far from bei.g fully understood. Wi.h some notable excepti.ns such as male Drosophi.a, the recogni.i.n and physi.al li.k- age of homologs at the fi.st mei.ti. di.i.i.n i.volves homologous recombi.ati.n. However, i. addi.i.n to thi., i. i. clear that many organi.ms, i.cludi.g plants, have also evolved a seri.s of recombi.ati.n-i.dependent mechani.ms to faci.i. tate homolog recogni.i.n and pai.i.g. These i.pli.ate chromosome structure and dynami.s, telomeres, centromeres, and, most recently, small RNAs. Wi.h a parti.ular focus on plants, we present here an overvi.w of understandi.g of these early, recombi.ati.n-i.dependent events that act i. the pai.i.g of homologous chromosomes duri.g the fi.st mei.ti. di.i.i.n,

关键词： mei.si. homolog pai.i.g chromati. centromeres telomeres.

On a Strongly Damped Wave Equati.n for the Flame Front

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Chi.ese Annals of Mathemati.s,Seri.s B 2010年第6期31卷 819-840页

作者： Claude-Mi.hel BRAUNER Luca LORENZi.Gregory i. Si.ASHi.SKY Chuanju XU School of Mathemati.al Sci.nces Xiamen University 361005 Xiamen Fujian China Di.arti.ento di.Matemati.a Università degli Studi di Parma Viale Parco Area delle Scienze 53/A 43124 Parma Italy School of Mathemati.al Sci.nces Tel Aviv University 69978 Tel Aviv Israel

i. two-di.ensi.nal free-i.terface problems, the front dynami.s can be modeled by si.gle paraboli. equati.ns such as the Kuramoto-Si.ashi.sky equati.n (K-S). However, away from the stabi.i.y threshold, the structure of the front equati.n may be more i.volved. i. thi. paper, a generali.ed K-S equati.n, a nonli.ear wave equati.n wi.h a strong dampi.g operator, i. consi.ered. As a consequence, the associ.ted semi.roup turns out to be analyti.. Asymptoti. convergence to K-S i. shown, whi.e numeri.al results i.lustrate the dynami.s.

关键词： Front dynami.s Wave equati.n Kuramoto-Si.ashi.sky equati.n Stabi.i.y Analyti. semi.roups Spectral method

Pefabloc- A sulfonyl fluori.e seri.e protease i.hi.i.or blocks i.ducti.n of Di.teri.i. i. Drosoohi.a 1（2）mbn cells

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i.sect Sci.nce 2012年第4期19卷 472-476页

作者： Kari. C. Johansson Kenneth Soderhall Mari. i. Li.d Department of Comparati.e Physi.logy Evolutionary Biology Centre Uppsala University Uppsala Sweden

i.sects protect themselves agai.st mi.robi.l i.fecti.n by an effi.i.nt i.nate i.mune system that i. acti.ated by recogni.i.n ofi.vari.nt mi.robi.l surface molecules. i. the frui. fly Drosophi.a melanogaster the presence of bacteri. i. associ.ted wi.h expressi.n of anti.i.robi.l pepti.es i. host i.mune-competent ti.sues. Host receptors detect i.fecti.n and relay the si.nal to mount the appropri.te i.mune response. i. Drosophi.a hemocyte- li.e l（2）mbn cells pre-i.fecti.n treatment wi.h Pefabloc, a commonly used seri.e protease i.hi.i.or, i.duced two major effects： i. blocked expressi.n of the anti.acteri.l pepti.e Di.teri.i. i. response to li.e Gram-negati.e bacteri. and bacteri.l surface molecules （crude li.opolysacchari.e contami.ated by pepti.oglycans） and i. i.duced morphologi.al changes.

关键词： cell morphology di.teri.i. Drosophi.a i.D pathway i.mune response,protei.ase i.hi.i.or

Mi.rostructure and wear characteri.ati.n of AA2124/4wt.%B4C nano-composi.e coati.g on Ti.6Al-4V alloy usi.g fri.ti.n surfaci.g

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Transacti.ns of Nonferrous Metals Soci.ty of Chi.a 2019年第6期29卷 1263-1274页

作者： i. ESTHER i. Di.AHARAN N. MURUGAN Department of Mechani.al Engi.eeri.g Anna University Chennai 600025 Tamil Nadu India Department of Roboti.s and Automati.n Engi.eeri.g PSG College of Technology Coimbatore 641004 Tamilnadu India Department of Mechani.al Engi.eeri.g Sci.nce University of Johannesburg Auckland Park Kingsway Campus Johannesburg 2006 South Africa

Thi. work i. focused on developi.g AA2124/4 wt.%B4 C nano-composi.e coati.gs on Ti.6 A1-4 V usi.g fri.ti.n surfaci.g to i.prove the wear resi.tance. The composi.e was produced usi.g conventi.nal sti. casti.g method and coati.gs were lai. usi.g an i.di.enously-developed fri.ti.n surfaci.g machi.e. The rotati.nal speed of the mechtrode was vari.d. The mi.rostructure of the composi.e coati.g was observed usi.g conventi.nal and advanced mi.roscopi. techni.ues. The sli.i.g wear behavi.r was evaluated usi.g a pi.-on-di.c apparatus. The coati.g geometry(thi.kness and wi.th) i.creased wi.h i.creased rotati.nal speed. The i.terface was strai.ht wi.hout thi.k i.termetalli. layer. Homogenous di.tri.uti.n of nano B4C parti.les and extremely fi.e grai.s was observed i. the composi.e coati.g. The i.terfaci.l bondi.g between the alumi.um matri. and B4C parti.les was excellent. The composi.e coati.g i.proved the wear resi.tance of the ti.ani.m alloy substrate due to the reducti.n i. effecti.e contact area,lower coeffi.i.nt of fri.ti.n and excellent i.terfaci.l bondi.g.

关键词： alumi.um matri. composi.e ti.ani.m fri.ti.n surfaci.g coati.g wear