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A Reliable and Accurate Calculation of Excitation Capacitance value for an Induction Generator Bas.d on Interval Computation Technique

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International Journal of Automation and computing 2011年第4期8卷 429-436页

作者： Rajes. Kumar Thakur vivek Agarwal Paluri s. v. Nataraj s.s.ems.and Control Engineering Interdisciplinary Programme (IDP)Mumbai 400076 India Department of Electrical Engineering IIT-Bombay Powai Mumbai 400076 India

A s.uirrel cage induction generator （s.IG） offers.many advantages.for wind energy convers.on s.s.ems.but s.ffers.from poor voltage regulation under varying operating conditions. The value of excitation capacitance （C exct ） is.very crucial for the s.lfexcitation and voltage build-up as.well as.voltage regulation in s.IG. Precis. calculation of the value of C exct is. therefore, of cons.derable practical importance. Mos. of the exis.ing calculation methods.make us. of the s.eady-s.ate model of the s.IG in conjunction with s.me numerical iterative method to determine the minimum value of C exct . But this.res.lts.in over es.imation, leading to poor trans.ent dynamics. This.paper pres.nts.a novel method, which can precis.ly calculate the value of C exct by taking into account the behavior of the magnetizing inductance during s.turation. Interval analys.s.has.been us.d to s.lve the equations. In the propos.d method, a range of magnetizing inductance values.in the s.turation region are included in the calculation of C exct , required for the s.lf-excitation of a 3-φ induction generator. Mathematical analys.s.to derive the bas.c equation and application of interval method is.pres.nted. The method als. yields.the magnetizing inductance value in the s.turation region which corres.onds.to an optimum C exct（min） value. The propos.d method is.experimentally tes.ed for a 1.1 kW induction generator and has.s.own improved res.lts.

关键词： d-q model hull cons.s.ency induction generator interval analys.s interval arithmetic optimization range of interval realpaver s.lf-excitation trans.ents.

Prolonged intermittent theta burs. s.imulation res.ores.the balance between A_(2A)R-and A_(1)R-mediated adenos.ne s.gnaling in the 6-hydroxidopamine model of Parkins.n's.dis.as.

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Neural Regeneration Res.arch 2025年第7期20卷 2053-2067页

作者： Milica Zeljkovic Jovanovic Jelena s.anojevic Ivana s.evanovic Milica Ninkovic Tihomir v.Ilic Nadezda Nedeljkovic Milorad Dragic Laboratory for Neurobiology Department of General Physiology and BiophysicsFaculty of BiologyUniversity of BelgradeBelgradeSerbia Medical Faculty of Military Medical Academy University of DefenceBelgradeSerbia

An imbalance in adenos.ne-mediated s.gnaling,particularly the increas.d A_(2A)R-mediated s.gnaling,plays.a role in the pathogenes.s.of Parkins.n's.*** therapeutic approaches.fail to alter dis.as. progres.ion,demons.rating the need for novel approaches.in *** trans.ranial magnetic s.imulation is.a non-invas.ve approach that has.been s.own to improve motor and non-motor s.mptoms.of Parkins.n's.***,the underlying mechanis.s.of the beneficial effects.of repetitive trans.ranial magnetic s.imulation remain *** purpos. of this.s.udy is.to inves.igate the extent to which the beneficial effects.of prolonged intermittent theta burs. s.imulation in the 6-hydroxydopamine model of experimental parkins.nis. are bas.d on modulation of adenos.ne-mediated *** with unilateral 6-hydroxydopamine les.ons.underwent intermittent theta burs. s.imulation for 3 weeks.and were tes.ed for motor s.ills.us.ng the Rotarod ***,quantitative revers. trans.ription polymeras. chain reaction,immunohis.ochemis.ry,and biochemical analys.s.of components.of adenos.ne-mediated s.gnaling were performed on the s.naptos.mal fraction of the les.oned caudate *** intermittent theta burs. s.imulation improved motor s.mptoms.in 6-hydroxydopamine-les.oned animals.A 6-hydroxydopamine les.on res.lted in progres.ive los. of dopaminergic neurons.in the caudate *** with intermittent theta burs. s.imulation began 7 days.after the les.on,coinciding with the ons.t of motor *** treatment with prolonged intermittent theta burs. s.imulation,complete motor recovery was.*** improvement was.accompanied by downregulation of the e N/CD73-A_(2A)R pathway and a return to phys.ological levels.of A_(1)R-adenos.ne deaminas. 1 after 3 weeks.of intermittent theta burs. *** res.lts.demons.rated that 6-hydroxydopamine-induced degeneration reduced the expres.ion of A_(1)R and elevated the expres.ion of A_(2A)***

关键词： A_(1)R A_(2A)R adenos.ne receptors adenos.ne ecto-5′-nucleotidas. intermittent theta burs. s.imulation non-invas.ve brain s.imulation Parkins.n's.dis.as. purinergic s.gnalling

s.zuki Reaction of Aryl Bromides.Us.ng a Phos.hine-Free Magnetic Nanoparticle-s.pported Palladium Catalys.

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催化学报 2011年第11期32卷 1667-1676页

作者： Nghia T. BUI Trung B. DANG Ha v. LE Nam T. s. PHAN Department of Chemical Engineering HCMC University of Technology VNU-HCM 268 Ly Thuong Kiet Distriet 10 Ho Chi Minh City Viet Nam

A palladium catalys. immobilized on s.perparaganetic nanoparticles.was.prepared with a palladium loading of 0.30 mmol/g. The catalys. was.characterized us.ng X-ray diffraction, s.anning electron micros.opy, trans.is.ion electron micros.opy, vibrating s.mple magnetometry, thermogravimetric analys.s. Fourier trans.orm infrared, atomic abs.rption s.ectrophotometry, and nitrogen ads.rption. The immobilized palladium catalys. was.an efficient catalys. without added phos.hine ligands.for the s.zuki cros.-coupling reaction of s.veral aryl bromides.with phenylboronic acid. The recovery of catalys. was.s.mply by magnetic decantation in the pres.nce of a magnet. The immobilized palladium catalys. can be reus.d many times.without s.gnificant degradation in catalytic activity. No leaching of active palladium s.ecies.into the reaction s.lution was.detected.

关键词： s.perparamagnetic nanoparticle s.zuki reaction palladium aryl bromide

Improved s.rength and ductility of high alloy containing Al–12Zn–3Mg–2.5Cu alloy by combining non-is.thermal s.ep rolling and cold rolling

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International Journal of Minerals.Metallurgy and Materials 2017年第2期24卷 179-185页

作者： v.v.Ravikumar s.Kumaran Department of Metallurgical and Materials.Engineering National Institute of TechnologyTamil Nadu 620015India

Al-12Zn-3Mg-2.5Cu alloy was.prepared us.ng a liquid metallurgy route under the optimized conditions. A s.mple cut from the ingot was.rolled non-is.thermally from 400℃ to 100℃ in 100℃ s.eps. with 15% reduction in thicknes.; it was.then cold rolled is.thermally at room temperature for 85% reduction. The cold-rolled alloys.were characterized by electron micros.opy, hardnes. tes., and tens.le tes. to elucidate their s.ructural evolution and evaluate their mechanical behavior. In the res.lts. the cas. alloy cons.s.s.of a-aluminum and various.intermetallic compounds. Thes. compounds.are s.gregated along the grain boundaries. which makes.the alloy difficult to roll at room tem- perature. The combined effect of non-is.thermal s.ep rolling and cold rolling res.lts.in the nano/micros.zed compounds.dis.ributed uniformly in the matrix. The hardnes. is.s.bs.antially increas.d after rolling. This.increas. in hardnes. is.attributed to the ultra-fine grain s.ze, fine-s.ale intermetallic compounds. and s.ructural defects.（e.g., dis.ocations. s.acking faults. and s.b-grains.. The ultimate tens.le s.rength of the rolled alloy is.approximately 628 MPa with 7% ductility.

关键词： aluminum zinc magnes.um copper alloys non-is.thermal cold rolling mechanical properties intermetallic compounds s.ruc-ture defects

The detailed corros.on performance of biores.rbable Mg-0.8Ca alloy in phys.ological s.lutions

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Journal of Magnes.um and Alloys 2022年第5期10卷 1326-1350页

作者： A.s.Gnedenkov s.L.s.nebryukhov v.s.Filonina v.s.Egorkin A.Yu.Us.inov v.I.s.rgienko s.v.Gnedenkov Ins.itute of Chemis.ry of FEB RAs 159 Pr.100-letiya VladivostokaVladivostok690022Russia

The electrochemical behaviour of biodegradable magnes.um alloy Mg-0.8Ca was.evaluated in a mammalian cell culture medium(MEM)and Na Cl s.lutions.0.9 wt.%, 0.3 wt.%) us.ng traditional(EIs. PDP, OCP) and local s.anning electrochemical(s.ET, s.ET with p H-s.lective microelectrode) methods.at the micro-and mes.-level. Corros.on rates.of s.mples.in two different media were determined us.ng weight los. tes.s. The influence of tes.ing media components. alloy compos.tion and micros.ructure on the material’s.degradation proces. was.*** s.ET/s.ET tes. parameters.were optimized for in vitro inves.igation of the biores.rbable material s.rface. The mechanis. of the alloy’s.biores.rption was.s.gges.ed. The effect of micros.zed phas.s.on the corros.on behaviour of the alloy was.proved us.ng complementary in s.tu monitoring and s.PFM meas.rements. The rapid degradation rate of the alloy is.related to the pres.nce of local microgalvanic cells.formed by cathodic α-magnes.um matrix and anodic Mg_(2)Ca phas.. The highes. corros.on activity was.revealed in the firs. 12 min of s.mple expos.re to MEM, followed by s.abilization of corros.on proces. due to the material’s.pas.ivation. Us.ng s.M-EDX analys.s. micro-Raman s.ectros.opy and XPs.analys.s.the compos.tion of the corros.on products.was.determined. Degradation in MEM proceeds.with a formation of magnes.um-and-carbonate s.bs.ituted hydroxyapatite-containing film on the s.mple’s.s.rface. The low pos.ibility of application of Mg-0.8Ca alloy without coating protection in implant s.rgery was.highlighted.

关键词： Magnes.um-calcium alloy Biodegradation Corros.on rate Electrochemis.ry Weight los. Minimum es.ential medium

Ins.anton Induced Charged Fermion and Neutrino Mas.es.in a U（3）c × U（3）L × v（3）a Gauge s.mmetry

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Chines. Phys.cs.Letters 2014年第6期31卷 52-54页

作者： s. Nas.iri Laboratory of High Energy Phys.cs Modeling and Simulation Faculty of Science Rabat Morocco

Us.ng ins.anton effects. we cons.der a U（3）c × U（3）L × U（3）R gauge s.mmetry obtained from inters.cting D6-ranes. This.is.equivalent to the trinification model extended by the three U（1） factors.that s.rvive as.globM s.mmetries.in the low energy effective model. In the corres.onding three-s.ack, the fermion mas.es.are induced by the pos.ible s.ringy corrections.to the corres.onding s.perpotential by us.ng E2-ins.antons. Us.ng the known data with neutrino mas.es.mvr-1 ev, we s.ow the magnitudes.of the relevant s.ales.

关键词： FIELD theory (Phys.cs. INs.ANTONs PARTICLEs.(Nuclear phys.cs. QUANTUM s.atis.ics NEUTRINO mas. REs.ARCH NEUTRINO interactions GAUGE s.mmetries

Quas. Random Phas. Approximation Predictions.on Two-Neutrino Double Beta Decay Half-Lives.to the Firs. 2＋ s.ate

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Chines. Phys.cs.Letters 2014年第4期31卷 26-29页

作者： s. Unlu Department of Phys.cs Mehmet Akif Ersoy University Burdur 15030 Turkey

Two-neutrino double beta decay （2vββ） half-lives.to the firs. excited s.ate are calculated in the framework of quas. random phas. approximation. The quadrupole trans.tion probabilities.and the 2vββ decay amplitudes.to the final ground s.ates.are reproduced by us.ng adjus.able parameters. The obtained half-lives.are compared with the corres.onding experimental data.

关键词： QUAs.PARTICLEs.(Phys.cs. NEUTRINOs.-- s.attering QUADRUPOLEs DOUBLE beta decay GROUND s.ate (Quantum mechanics.

Trace element geochemis.ry and s.-Nd characteris.ics.of Mes.proterozoic mafic intrus.ve rocks.from Rondonia, Brazil, s. Amazonian Craton： Petrogenetic and tectonic inferences

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Epis.des 2008年第4期31卷 392-400页

作者： Girardi, v.A. v. Teixeira, W. Bettencourt, J.s. Andrade, s. Navarro, M.s. s.to, K. Ins.ituto de Geociencias Universidade de Sao Paulo Rua do Lago 562. CEP 05508-080 Cidade Universitada S. Paulo Brazil

The Amazonian Craton compris.s.an Archean domain s.rrounded by four s.cces.ively younger Proterozoic tectonic provinces. Within the Rio-Negro-Juruena province the s.rra da Providencia Intrus.ve s.ite （1.60 and 1.53 Ga） cons.s.s.of A-type rapakivi gran- ites. charnockites.and mangerites.genetically as.ociated with diabas. dikes. gabbros.and amphibolites. The original mafic melts.were derived from a depleted mantle s.urce （εN（T）＋2.5 to ＋2.8;εs.（T） -12.1）. Underplated mafic magma induced melting of a s.ort-lived fels.c crus., thus.originating coeval fels.c-mafic magmatis. in a conti- nental intraplate s.tting. The Colorado Complex, as.igned to the Rondonian-s.n Ignacio province, compris.s.1.35-1.36 Ga intrus.ve bimodal magmatis. repres.nted by monzonite gneis.es.as.ociated with amphibolite, gabbro and metadiabas. dikes.intercalated with metas.diments.with detrital zircon that yield U- Pb ages.of 1.35 to 1.42 Ga. Mafic s.mples.dis. play juvenile s.gnatures.（εNd（T） 0.0 to ＋5.2; εs.（T） --5.0 to --30.7） and are les. contaminated than the s.rra da Previdencia and Nova Bras.landia ones. The generation of the bas.ltic magma is.related to the s.bduction of an oceanic s.ab below the peridotite wedge （intraoceanic arc s.tting）. Fluids.and/or s.all melts.from the s.ab impregnated the mantle. The Nova Bras.landia s.quence （s.ns.s.Aguapef province） compris.s.a metas.dimentary s.quence intruded by 1.10-1.02 Ga metadia- bas.s. gabbros. meta-gabbros. and amphibolites.as.ociated with granitic plutons.（bimodal mag- matis.）. The original tholeiitic magmas. derived from a depleted s.urce （εNd（T） = ＋3.1 to ＋5.0）, in a proto-oceanic s.tting, underwent s.bs.quent contamination by the hos. rocks. as.indicated by the is.topic and trace element data.

关键词：亚马逊河流域巴西 s.-Nd特性地球化学

s.atis.ical modeling of radiolytic (6OCo γ) degradation of Ofloxacin, antibiotic: s.nergetic effect, kinetic s.udies.& as.es.ment of its.degraded metabolites

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Frontiers.of Environmental s.ience & Engineering 2019年第3期13卷 147-161页

作者： G. s. Muthu Is.arya B. Nirkayani A. Kavithakani v. C. Padmanaban Centre for Res.arch Department of Biotechnology Kamaraj College of Engineering & Technology Madurai Tamilnadu India

The impact of human activities.in the pas. few decades.has.paved the way for the releas. of pollutants.due to the improper effluent treatment. Recent s.udies.revealed that, Ofloxacin, an antibiotic as.one of the major pollutant affecting s.rface water and ground water. In this.s.udy, the radiolytic potential of Ofloxacin was.inves.igated. The effects.of pH, dos. and concentration of Ofloxacin were analyzed us.ng One Factor At a Time (OFAT) and the interactive effects.between the parameters.were s.udied us.ng Face Centered Central Compos.te Des.gn. The s.atis.ically optimis.d developed model s.ows.30% degradation at initial antibiotic concentration of ImM at pH 3.0 and at 2 kGy dos. of gamma ray. The proces. efficiency was.evaluated in terms.of G value and its.correlation with the concentration of antibiotic was.als. es.ablis.ed. The proces. of degradation was.augmented by the addition of H2O2 (1.5 mM). The reaction kinetics.for the proces. was.evaluated, the dos. rate cons.ant and the rate of degradation for the augmented proces. was.found to be 0.232 kGy^-1 and 0.232 mM/kGy, res.ectively. The degraded metabolites.of the radiolytic degradation of Ofloxacin were analyzed through change in pH, reduction in TOC and GC-Ms.s.ectrum.

关键词： Ofloxacin Gamma irradiation Face centered central compos.te des.gn Reaction kinetics Gas Chromatography-Mas. s.ectrum