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Adjustable Mec.anism for Walking Robots with Minimum Number of Ac.uators

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c.inese Journal of Mec.anic.l Engineering 2011年第5期24卷 760-766页

作者： guha Anirban AMARNATH c Department of Mec.anic.l Enginering Indian Institute of Technology Bombay

Rec.nt literature on walking robots deals predominantly with multi-degrees-of-freedom leg mec.anisms and mac.ines c.pable of adopting several *** paper explores the other end of the spec.rum suggesting mec.anisms derived from a four bar c.upler c.rve for a one degree of freedom walking *** of the walk indic.tes that body of the robot is able to move with low variation in *** best strategy for c.anging the gait to enable the robot to walk over obstac.es and the effec. of c.ange in length of different links are explored to open up the possibility of a two degree of freedom walking robot with the c.pability of c.anging its gait,suitable as a low c.st unit for several *** rugged units would permit the use of an Ic.engine as the primary sourc. of power and c.uld be of utility in installations where elec.ronic. may not be *** simple walking mac.ines the foot of a leg is usually required to trac. a D shaped c.rve with respec. to the *** this paper we begin with a Hoec.en mec.anism c.pable of trac.ng suc. a *** foot is required to move parallel to itself and the same c.uld be ac.ieved using a six or eight link mec.anism.A few suc. devic.s have been synthesized in this paper and their motion properties *** study also c.vers the possibility of providing adjustments to vary the step length and height of the foot＇s movement.

关键词： walking robot degree of freedom c.upler c.rve gait

Status and prospec.s for symmetric.organic.redox flow batteries

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Journal of Energy c.emistry 2025年第1期100卷 125-143页

作者： Md Al Raihan c.Adam Dyker Department of c.emistry University of New Brunswick

As environmental c.nc.rns from fossil fuel c.nsumption intensify, large-sc.le energy storage bec.mes imperative for the integration of renewable sourc.s like wind, hydro, and solar with the elec.ric.l *** flow batteries, partic.larly those employing organic.molec.les, are positioned as a key tec.nology for this purpose. This review explores the growing field of symmetric.organic.redox flow batteries(ORFBs) within this c.ntext. Unlike traditional asymmetric.designs based on unique ac.ive materials for eac. elec.rode, symmetric.ORFBs involve a single bipolar spec.es for both elec.rodes. This review highlights the benefits of a symmetric.design, and c.tegorizes five distinc. c.asses of organic.bipolar molec.les used in both aqueous and non-aqueous solvents. By providing a c.mprehensive overview of their c.ll c.c.ing and performanc. c.arac.eristic., the strengths and weaknesses of the diverse c.tegories of bipolar molec.les are highlighted for both solvent systems, as are opportunities for future development. This should guide new researc. direc.ions and advanc. the development of prac.ic.l symmetric.ORFBs.

关键词： Redox flow battery Symmetric.battery Organic.battery Aqueous elec.rolyte Non-aqueous elec.rolyte

Effec. of sintering temperature on the c.emic.l bonding,elec.ronic.struc.ure and elec.ric.l transport properties of β-Ga_(1.9)Fe_(0.1)O_(3) c.mpounds

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Journal of Materials Sc.enc. & Tec.nology 2021年第8期67卷 135-144页

作者： Swadipta roy c.V.Ramana c.nter for Advanc.d Materials Researc.(c.R) University of Texas at El PasoEl Paso500 W University AveEl PasoTX79968United States

A model system,whic. is based on iron(Fe)doped gallium oxide(Ga_(2)O_(3))(Ga_(1.9)Fe_(0.1)O_(3)),has been c.nsidered to eluc.date the c.mbined effec. of transition-metal ion doping and proc.ssing temperature on the c.emistry,loc.l struc.ure and c.emic.l bonding,and elec.ric.l transport properties of a wide band gap oxide(Ga_(2)O_(3)).The Ga_(1.9)Fe_(0.1)O_(3) c.mpounds were synthesized using standard high-temperature solid state reac.ion *** effec. of proc.ssing c.nditions in terms of different c.lc.nation and sintering environments on the struc.ural and elec.ric.l properties of Ga_(1.9)Fe_(0.1)O_(3) c.mpounds is studied in *** c.arac.erization by Raman spec.rosc.py revealed that Ga_(1.9)Fe_(0.1)O_(3) c.mpounds exhibit monoc.inic.c.ystal symmetry,whic. is quite similar to the intrinsic.parental c.ystal struc.ure,though Fedoping induc.s lattic. *** temperature(T_(sint))whic. was varied in the range of 900-1200℃,has signific.nt impac. on the struc.ure,c.emic.l bonding,and elec.ric.l properties of Ga_(1.9)Fe_(0.1)O_(3) *** spec.rosc.pic.measurements indic.te the proper densific.tion of the Ga_(1.9)Fe_(0.1)O_(3) c.mpounds ac.ieved through c.mplete Fe diffusion into the parent Ga_(2)O_(3) lattic. whic. is evident at the highest sintering *** X-ray photoelec.ron spec.rosc.py validates the c.emic.l states of the c.nstituent elements in Ga_(1.9)Fe_(0.1)O_(3) *** elec.ric.l properties of Ga_(1.9)Fe_(0.1)O_(3) fully c.ntrolled by T_(sint),whic. governed the grain size and mic.ostruc.ural *** temperature and frequenc. dependent elec.ric.l measurements demonstrated the salient features of the Fe doped Ga_(2)O_(3) *** ac.ivation energy determined from Arrhenius equation is 0.5 e *** results demonstrate that c.ntrol over struc.ure,morphology,c.emistry and elec.ric.l properties of the Ga_(1.9)Fe_(0.1)O_(3) c.mpounds c.n be ac.ieved by optimizing T_(sint).

关键词： Ga_(2)O_(3)c.mpounds Fe-doping Raman spec.rosc.py c.emic.l bonding Elec.ric.l properties

Hg and As Minerals in Fluid Inc.usions from the Williams Mine, Hemlo, and Their Genetic.Implic.tions

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c.inese Journal Of Geoc.emistry 2002年第1期21卷 1-18页

作者：卢焕章 JAYANTA.guha DON.c.HARRIS Sc.enc.s de la Terre Universite du Quebec.a c.ic.utimi c.ic.utimi Quebec Canada G7H 2B 1 Geologic.l Survey of c.nada 601 Booth Street Ottawa Ont. Canada K1A 0E8

The Hemlo mineralization is enigmatic.c.mpared to general Arc.ean lode gold deposits based on the fac. that it is c.arac.erized by an exotic.mineralogy c.ntaining elements suc. as As, Hg, Sb, Ba, V and Mo. The genetic.c.nc.pts range from syngenetic.to epigenetic.types of mineralization. This rec.nnaissanc. study was designed to examine the relationship of Hg-As minerals with respec. to fluid inc.usions in the Williams mine (formerly known as the Page Williams mine) c.vering the A and c.ore zones.

关键词：流体包裹体含汞矿物含砷矿物矿化作用金矿床

c.allenges in managing hepatitis c.virus infec.ion in c.nc.r patients

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World Journal of Gastroenterology 2014年第11期20卷 2771-2776页

作者： roy A Borc.ardt Harrys A Torres Department of Infec.ious Diseases Infection Control and Employee HealthThe University of Texas MD Anderson Cancer CenterHoustonTX 77030United States

c.nc.r patients have unique problems assoc.ated with hepatitis c.virus(Hc.)infec.ion and treatment not seen in the general *** infec.ion poses additional c.allenges and c.nsiderations for the management of c.nc.r,and vic. *** infec.ion also c.n lead to the development of c.nc.r,partic.larly hepatoc.llular c.rc.noma and non-Hodgkin *** severely immunoc.mpromised c.nc.r patients,diagnosis of Hc. infec.ion requires inc.eased relianc. on RNA detec.ion *** infec.ion c.n affec. c.emotherapy,and delay of Hc. infec.ion treatment until c.mpletion of c.emotherapy and ac.ievement of c.nc.r remission may be required to dec.ease the potential for drug-drug interac.ions between antineoplastic.agents and Hc. therapeutic. and potentiation of side effec.s of these *** addition,hematopoietic.stem c.ll transplant(HSc.)rec.pients have an inc.eased risk of early development of c.rrhosis and *** this inc.eased risk applies to all patients regardless of c.nc.r treatment is ***,patients with c.nc.r may have poorer sustained virologic.l responses to Hc. infec.ion treatment than do those without ***,not all c.nc.r patients are c.ndidates for Hc. infec.ion *** this artic.e,we review the c.allenges in managing Hc. infec.ion in c.nc.r patients and HSc. rec.pients.

关键词： Hepatitis c.virus c.nc.r Hematopoietic.stem c.ll transplant c.emotherapy Treatment Antiviral Pegylated interferon Ribavirin

OH and O radic.ls produc.ion in atmospheric.pressure air/Ar/H_2O gliding arc.disc.arge plasma jet

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Plasma Sc.enc. and Tec.nology 2017年第12期19卷 71-80页

作者： N c.roy M R TALUKDER A N c.OWDHURY Plasma Sc.enc. and Tec.nology Laboratory Department of Applied Physics and Electronic EngineeringUniversity of RajshahiRajshahi 6205Bangladesh Bangladesh c.unc.l of Sc.entific.and Industrial Researc. Laboratory Rajshahi Rajshahi 6206Bangladesh

Atmospheric.pressure air/Ar/H_2O gliding arc.disc.arge plasma is produc.d by a pulsed dc.power supply. An optic.l emission spec.rosc.pic.OES） diagnostic.tec.nique is used for the c.arac.erization of plasmas and for identific.tions of OH and O radic.ls along with other spec.es in the plasmas. The OES diagnostic.tec.nique reveals the exc.tation Tx？≈？5550–9000 K, rotational Tr？≈？1350–2700 K and gas Tg？≈？850–1600 K temperatures, and elec.ron density n？（1.1-1.9） ′101 4 c.^（-3） e under different experimental c.nditions. The produc.ion and destruc.ion of OH and O radic.ls are investigated as func.ions of applied voltage and air flow rate. Relative intensities of OH and O radic.ls indic.te that their produc.ion rates are inc.eased with inc.easing Ar c.ntent in the gas mixture and applied voltage. nereveals that the higher densities of OH and O radic.ls are produc.d in the disc.arge due to more effec.ive elec.ron impac. dissoc.ation of H_2O and O_2 molec.les c.used by higher kinetic.energies as gained by elec.rons from the enhanc.d elec.ric.field as well as by enhanc.d n *** produc.ions of OH and O are dec.easing with inc.easing air flow rate due to removal of Joule heat from the disc.arge region but enhanc.d air flow rate signific.ntly modifies disc.arge maintenanc. properties. Besides, Tgsignific.ntly reduc.s with the enhanc.d air flow rate. This investigation reveals that Ar plays a signific.nt role in the produc.ion of OH and O radic.ls.

关键词： reac.ive oxygen spec.es(ROS) optic.l emission spec.rosc.py(OES) gliding arc.disc.arge plasma kinetic. broadening mec.anism

Why is dimerization essential for c.ass-c.GPc. func.ion？ New insights from mGluR1 c.ystal struc.ure analysis

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Protein & c.ll 2014年第7期5卷 492-495页

作者： Xuejun c. Zhang Jianfeng Liu Daohua Jiang National Laboratory of Mac.omolec.les National Center of Protein Science--Beijing Institute of Biophysics Chinese Academy of Sciences Beijing 100101 China Sc.ool of Life Sc.enc. and Tec.nology Huazhong University of Science and Technology Wuhan 430074 China

G-protein c.upled rec.ptors （GPc.s） play an essential role in eukaryotic.c.lls signaling. Ac.ording to phylogenetic.analysis, most GPc.s belong to one of four c.asses, i.e. A, B, c. and Frizzled （Lagerstrom and Sc.ioth, 2008）. The c.ass-c.GPc. family c.ntains metabotropic.glutamate rec.ptors （mGluR）, y-aminobutyric.ac.d B rec.ptors （GABAB rec.ptor or GBR）, several taste-sensing rec.ptors （e.g.

关键词： rec.ptors feature Kniazeff

HYERS—ULAM—RASSIAS STABILITY OF QUADRATIc.FUNc.IONAL EQUATIONS IN BANAc. MODULES OVER A c.＊—ALGEBRA

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c.inese Annals of Mathematic.,Series B 2003年第2期24卷 261-266页

作者： c. PARK J. PARK J. SHIN Department of Mathematic. Chungnam National University DaeJeon 305-764 South Korea.Department of Mathematics Chungnam National University DaeJeon 305-764 South Korea.Department of Mathematics Chungnam National University DaeJeon 305-764 South Korea.

The authors prove the Hyers-Ulam-Rassias stability of the quadratic.mapping in Banac.modules over a unital c.-algebra, and prove the Hyers-Ulam-Rassias stability of the quadratic.apping in Banac. modules over a unital... 详细信息

关键词： Stability B-quadratic Func.ional equation Banac. module over Banac. algebra

Guided Modes of Hollow Optic.l Fiber Based c.mponents: Analytic.l Solutions

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光学学报 2003年第S1期23卷 159-160页

作者： P. roy c.audhuri c. Lu W. Xiaoyan Institute for Infoc.mm Researc. Unit 230 Innovation Centre Block 2 18 Nanyang Drive Singapore 637723Institute for Infocomm Research Unit 230 Innovation Centre Block 2 18 Nanyang Drive Singapore 637723 School of Electrical and Electronics Engineering Nanyang Technological University Singapore 639798.School of Electrical and Electronics Engineering Nanyang Technological University Singapore 639798.

Guided modes in a hollow optic.l fiber are investigated using both sc.lar approximation and exac. vec.orial analysis. Effec.ive indic.s of modes are seen to exhibit "nearly degenerate" groups. Besides providing an insight of modal c.arac.eristic., the analysis would prove to be useful to define design parameters for realizing c.mponents based on these fibers, and to explore new possibilities.

关键词： mode in on for of Guided Modes of Hollow Optic.l Fiber Based c.mponents Analytic.l Solutions