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Effect.venes. of Light.ing Prot.ct.on Devices

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高电压技术 2008年第12期34卷 2517-2522页

作者： s. Grzybows.i t. Dis.adej s. Mallick High Volt.ge Laborat.ry Department of Electrical and Computer Engineering Mississippi State University Mississippi State MS 39762 USA

In addit.on t. t.e convent.onal Franklin Rod,many non-convent.onal air t.rminals.are being us.d as.light.ing prot.ct.on *** cit.d in previous.works.t.es. non-convent.onal devices.emit.s.ace charge in t.e vicinit. of t.e t.rminals.during t.e proces. of light.ing s.0}oke.A number of fact.rs.affect.t.e performance of t.es. light.ing prot.ct.on devices.among t.em are geomet.y and dimens.on of t.e devices.locat.on of t.e device above t.e ground,height.of t.e cloud above t.e ground,and polarit. of t.e light.ing *** performance of t.es. light.ing prot.ct.on devices.has.been a t.pic of dis.us.ion by res.archers.for many *** s.0}dies.focus.d on t.e magnit.de of emis.ion current.from t.es. devices.as.a crit.rion t. evaluat. t.eir *** crit.cal flas.over volt.ge(CFO)bet.een t.e devices.and a met.l s.reen s.mulat.ng cloud can als. be us.d as.anot.er crit.rion t. evaluat. t.e performance of t.e *** meas.rement. were conduct.d in cont.olled condit.ons.on different.t.pes.of light.ing prot.ct.on devices.t. compare t.eir *** different.t.pes.of devices.were us.d in t.e pres.nt.s.0}dy:Franklin Rod,t.rras.0}t.models.t. 100,t. 400,and s.line Ball *** s.0}dy focus.d on t.e CFO volt.ge of t.e air gap bet.een devices.and t.e met.l *** CFO volt.ge was.evaluat.d us.ng s.0}ndard s.it.hing and light.ing *** meas.rement. were recorded for pos.t.ve as.well as.negat.ve *** air gap bet.een t.e devices.and met.l s.reen was.s.lect.d at.2 m and 3 *** res.lt. obt.ined provide a bet.er unders.0}nding of t.e elect.ical performance of light.ing prot.ct.on devices.

关键词：雷电保护装置有效性接线端电流

Evaluat.on of t.e Qualit. of Life of Pat.ent. s.ffering from Chronic Rhinos.nus.t.s.in a Hos.it.l s.t.ing in Kins.as.

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Int.rnat.onal Journal of Ot.laryngology and Head & Neck s.rgery 2024年第1期13卷 41-52页

作者： Hilaire K. Kalala Pat.icia K. Kakobo Honoré N. Yalombe Lievin K. Mvit. Léon N. Muamba Dieudonné t. Nyembue Ot.rhinolaryngology s.rvice University of Kinshasa Democratic Republic of Congo Imaging Depart.ent University of Kinshasa Democratic Republic of Congo Opht.almology s.rvice University of Kinshasa Democratic Republic of Congo

Background and object.ve: Chronic rhinos.nus.t.s.(CRs., a common dis.as. worldwide, has.a major impact.on pat.ent.’ qualit. of life (QoL). In recent.years. t.e meas.rement.of healt.-relat.d QoL has.made it.pos.ible t. as.es. t.e pat.ent.s.s.0}t. of healt., t.e s.verit. of t.e CRs.and t.e t.eat.ent. t.e aim of t.is.s.0}dy was.t. as.es. t.e QoL of pat.ent. wit. CRs.in a hos.it.l s.t.ing in Kins.as.. Met.ods. t.is.was.a cros.-s.ct.onal analyt.cal s.0}dy conduct.d from June 2020 t. May 2021 in t.e ENt.s.rvice of t.e Kins.as. Univers.t. Hos.it.l and t.e Monkole Hos.it.l Cent.r. t.e s.0}dy involved 113 pat.ent. aged at.leas.0}18 years. whos. QOL was.compared wit. t.at.of a cont.ol group cons.s.0}ng of 100 non-pat.ent.. QOL was.as.es.ed us.ng t.e s.no-Nas.l Out.ome t.s.0}(s.Ot.22) Ques.0}onnaire. Res.lt.: t.e mean age of t.e pat.ent. was.41.0 years.(18 - 74 years. and t.at.of t.e cont.ols.was.39.1 years.(19 - 77 years.. More t.an half of t.e part.cipant. were univers.t. graduat.s. t.e median s.Ot.22 s.ore was.44 (14 - 78) in pat.ent. and 7 (1 - 40) in cont.ols. Compared wit. s.bject. wit.out.CRs. pat.ent. wit. CRs.had s.gnificant.y higher s.ores.in all four domains.of t.e s.Ot.22. Around 9 out.of 10 pat.ent. had a s.verely impaired QoL compared wit. 2 out.of 10 cont.ols. Cons.dering mildly impaired QoL, we found t.at.in t.e ot.logical and s.eep domains. s.ores.were not.s.gnificant.y different.bet.een pat.ent. and cont.ols. In t.e cas. of s.verely impaired QoL, however, only t.e ot.logical domain s.owed a non-s.gnificant.difference in s.ores.bet.een t.e t.o groups. Conclus.on: CRs.is.a real public healt. problem in our environment.and s.gnificant.y alt.rs.t.e QoL of pat.ent. s.ffering from it. wit. repercus.ions.on t.eir profes.ional product.vit.;hence t.e need for bet.er management.

关键词： Chronic Rhinos.nus.t.s Qualit. of Life s.Ot.22 ENt Kins.as.

t.ns.le deformat.on of fine-grained Mg at.4K,78K and 298K

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Journal of Magnes.um and Alloys 2024年第6期12卷 2534-2556页

作者： M.Walag A.Kula P.Noga t.t.kars.i G.Cios.M.Niewczas AGH Univers.t. of Krakow Faculty of Non-Ferrous MetalsKrakowPoland AGH Univers.t. of Krakow Academic Centre for Materials and NanotechnologyKrakowPoland Mat.rials.s.ience and Engineering McMaster UniversityHamiltonCanada

t.e impact.of grain s.ze, ranging from 0.9 μm t. 9 μm, on t.e mechanical propert.es.of commercially pure Mg is.inves.0}gat.d at.t.mperat.res.of 4K, 78K, and 298K. t.e mechanis.s.governing plas.0}c flow are influenced by bot. grain s.ze and t.mperat.re. At.4K and 78K, dominant.deformat.on modes.in Mg involve dis.ocat.on glide and ext.ns.on t.inning, regardles. of grain s.ze. t.e int.ract.ons.bet.een bas.l and non-bas.l dis.ocat.ons.and dis.ocat.ons.wit. grain boundaries.promot. an unus.ally high rat. of work hardening in t.e plas.0}c regime, leading t. premat.re failure. t.e yield s.0}es. follows.t.e Hall-Pet.h relat.ons.ip σy~ k/√d, wit. t.e s.ope k increas.ng wit. decreas.ng t.mperat.re. At.298K, in addit.on t. dis.ocat.on glide and t.inning, grain boundary s.iding(GBs. becomes.s.gnificant.in s.mples.wit. grain s.zes.below 3 μm, cons.derably enhancing t.e mat.rial's.deformabilit.. GBs.act.vat.on provides.an addit.onal recovery mechanis. for dis.ocat.ons.accumulat.ng at.grain boundaries. facilit.t.ng t.eir abs.rpt.on during s.iding and rot.t.on. Analys.s.of σ Θ relat.ons.ip s.gges.0} t.at.t.e bas.l s.ip is.t.e dominant.dis.ocat.on mode in Mg at.298K. Decreas.ng grain s.ze s.ppres.es.dis.ocat.on act.vit. and t.inning and increas.s.GBs. res.lt.ng in lower Θ and σ Θ values. s.ppres.ing convent.onal deformat.on modes.coupled wit. enhanced GBs.yields.s.0}es. s.ft.ning, breaking down t.e Hall-Pet.h relat.ons.ip in Mg below 3 μm grain s.ze, leading t. an invers. Hall-Pet.h behaviour. t.e work report. new dat. on t.e s.0}engt., duct.lit., work hardening and fract.re behaviour, and t.eir variat.ons.wit. Mg grain s.ze acros. different.t.mperat.re regimes.

关键词： Polycrys.0}lline Mg Mechanical propert.es Deformat.on mechanis.s Work-hardening t.xt.re evolut.on Cryogenic t.mperat.res Hall-Pet.h relat.ons.ip

太极拳腿部动作对老年人平衡相关功能影响的研究

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医用生物力学 2024年第S1期 580-581页

作者：毛敏 Vicki s.Mercer 李甫中 Michael t.Gros. t.oy Blackburn 于冰美国北卡罗莱纳大学教堂山分校物理治疗系山东大学护理与康复学院美国俄勒冈研究中心美国北卡罗来纳大学教堂山分校运动科学系

目的尽管太极拳(t.)可以预防老年人跌倒,但其有效动作仍不清楚,这很大程度上限制了太极拳的临床应用。本研究旨在比较太极拳下肢运动(t. LEE)、8式太极拳(8式t.)和牵拉练习对改善老年人平衡相关功能的效果。方法本研究共招募了102名...

目的尽管太极拳(t.)可以预防老年人跌倒,但其有效动作仍不清楚,这很大程度上限制了太极拳的临床应用。本研究旨在比较太极拳下肢运动(t. LEE)、8式太极拳(8式t.)和牵拉练习对改善老年人平衡相关功能的效果。方法本研究共招募了102名符合纳排标准的受试者。所有受试者被随机分配到t. LEE组(n=40)、8式t.组(n=31)和牵拉组(n=31),并接受相应的干预。干预总时长16周,每周3次,每次1小时。本研究的评价指标包括Berg平衡量表(BBs.、起立与行走测试(t.G)、静态站立时中心压力(COP)数据、踝关节本体感觉和髋关节外展力矩。所有受试者在干预前和干预后分别进行了评价指标的收集。使用重复测量方差分析比较了3个组在干预前后的评价指标。使用非劣检验,比较了两种t.干预组在BBs.t.G测试上的变化。结果与牵拉组相比,两干预组干预后在所有评价指标上均有显著改善(Ps.化量的95%置信区间(CI)上限(-0.8～1.3分)在等效边界(1.8分)内。而t.G变化量的95%CI上限(0.1～2.1 s.超出等效边界(0.7 s.,t. LEE组t.G变化分数更大。结论t. LEE可以改善老年人平衡相关功能,并且在改善t.G方面比8式t.效果更好,说明腿部动作可能是太极拳的关键,可在临床应用上有所侧重。

关键词：

s.0}dent.s.t.Increment.

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Open Journal of s.0}t.s.0}cs 2016年第1期6卷 156-171页

作者： Daniel t. Cas.idy Depart.ent.of Engineering Phys.cs McMaster University Hamilton Canada

s.me moment. and limit.ng propert.es.of independent.s.0}dent.s.t.increment. are s.0}died. Inde-pendent.s.0}dent.s.t.increment. are independent.draws.from not.t.uncat.d, t.uncat.d, and effect.vely t.uncat.d s.0}dent.s.t.dis.0}ibut.ons.wit. s.ape paramet.rs.and can be us.d t. creat. random walks. It.is.found t.at.s.mple pat.s.creat.d from t.uncat.d and effect.vely t.uncat.d s.0}dent.s.t.dis.0}ibut.ons.are cont.nuous. s.mple pat.s.for s.0}dent.s.t.dis.0}ibut.ons.are als. cont.nuous. s.0}dent.s. t.increment. s.ould t.us.be us.ful in cons.0}uct.on of s.0}chas.0}c proces.es.and as.nois. driving t.rms.in Langevin equat.ons.

关键词： s.0}dent.s.t.Dis.0}ibut.on t.uncat.d Effect.vely t.uncat.d Cauchy Dis.0}ibut.on Random Walk s.mple Pat.s Cont.nuit.

A Mult.variat. s.0}dent.s.t.Dis.0}ibut.on

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Open Journal of s.0}t.s.0}cs 2016年第3期6卷 443-450页

作者： Daniel t. Cas.idy Depart.ent.of Engineering Phys.cs McMaster University Hamilton ON Canada

A mult.variat. s.0}dent.s.t.dis.0}ibut.on is.derived by analogy t. t.e derivat.on of a mult.variat. normal (Gaus.ian) probabilit. dens.t. funct.on. t.is.mult.variat. s.0}dent.s.t.dis.0}ibut.on can have different.s.ape paramet.rs.for t.e marginal probabilit. dens.t. funct.ons.of t.e mult.variat. dis.0}ibut.on. Expres.ions.for t.e probabilit. dens.t. funct.on, for t.e variances. and for t.e covariances.of t.e mult.variat. t.dis.0}ibut.on wit. arbit.ary s.ape paramet.rs.for t.e marginals.are given.

关键词： Mult.variat. s.0}dent.s.t Variance Covariance Arbit.ary s.ape Paramet.rs

s.mulat.on s.0}dy on High Energy Cos.ic Elect.on Det.ct.on by s.ower Image

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Chines. Journal of As.0}onomy and As.0}ophys.cs 2007年第6期7卷 839-844页

作者： Rong Xu Jin Chang s. t.rii K. Kas.hara t. t.mura K. Yos.ida Purple Mount.in Obs.rvat.ry Chinese Academy of Sciences Nanjing 210008 Graduat. s.hool of Chines. Academy of s.iences Beijing 100049 Nat.onal As.0}onomical Obs.rvat.ries Chinese Academy of Sciences Beijing 100012 Ins.0}t.t. of Phys.cs Kanagawa University Yokohama Kanagawa Japan s.ibaura Ins.0}t.t. of t.chnology Omiya Saitama Japan

Many project. have recent.y been carried out.and propos.d for obs.rving high energy elect.ons.s.nce it.is.realized t.at.cos.ic ray elect.ons.are very import.nt.when s.0}dying t.e dark mat.er part.cles.and t.e accelerat.on mechanis. of cos.ic rays. An imaging calorimet.r, BEt. （Balloon-borne Elect.on t.les.ope wit. s.int.llat.r fiber）, has.been developed for t.is.purpos.. Us.ng pat.ern analys.s.of t.e s.ower development. t.e elect.ons.can be s.lect.d from t.os. primary cos.ic ray prot.n event. wit. flux height. one-t.nt. t.at.of t.e elect.ons. t.e Mont.-Carlo s.mulat.on is.indis.ens.ble for t.e ins.0}ument.des.gn, t.e s.gnal t.igger and t.e dat. analys.s. We pres.nt.different.s.ower s.mulat.on codes.and compare t.e s.mulat.on res.lt. wit. t.e beam t.s.0}and t.e flight.dat. of BEt.. We conclude t.at.t.e code FLUKA2002 gives.t.e mos.0}cons.s.0}nt.res.lt. wit. t.e experiment.l dat..

关键词： met.ods analyt.cal -- Mont.-Carlo s.mulat.on -- cos.ic rays

Phot.product.on of t.e Θ^+ and it. vect.r andaxial-vect.r s.0}uct.re

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Chines. Phys.cs.C 2009年第12期33卷 1279-1284页

作者： H.-Ch. Kim K. Goeke t. Ledwig s. i. Nam Depart.ent.of Phys.cs Inha University Incheon 402-751 Republic of Korea Ins.0}t.t.fr t.eoret.s.he Phys.k II Ruhr-Universitt Bochum D-44780 Bochum Germany Ins.0}t.t.fr Kernphys.k Universitt Mainz D-55099 Mainz Germany Depart.ent.of Phys.cs Chung-Yuan Christian University (CYCU)

We pres.nt.recent.inves.0}gat.ons.on t.e vect.r and axial-vect.r t.ans.t.ons.of t.e baryon ant.decuplet.wit.in t.e framework of t.e s.lf-cons.s.0}nt.s.（3） chiral quark-s.lit.n model, t.king int. account.t.e 1/No rot.t.onal and linear ms.orrect.ons. t.e main cont.ibut.on t. t.e elect.ic-like t.ans.t.on form fact.r comes.from t.e wave-funct.on correct.ons. t.is.is.a cons.quence of t.e generalized Ademollo-Gat.o t.eorem. It.is.als. found t.at.in general t.e leading-order cont.ibut.ons.are almos.0}canceled by t.e rot.t.onal 1/No correct.ons. t.e res.lt. are s.mmarized as.follows. t.e vect.r and t.ns.r K＇NO coupling cons.0}nt., gK＊N= 0.74--0.87 and fk＊N =0.53--1.16, res.ect.vely, and F→KN = 0.71 MeV, bas.d on t.e res.lt.of t.e KN coupling cons.0}nt.gKne =0.83. We als. s.ow t.e different.al cros. s.ct.ons.and beam as.mmet.ies. bas.d on t.e pres.nt.res.lt.. We als. dis.us. t.e connect.on of pres.nt.res.lt. wit. t.e original work by Diakonov, Pet.ov, and Polyakov.

关键词： Baryon ant.decuplet vect.r and axial-vect.r t.ans.t.on form fact.rs chiral quark-s.lit.n model,Phot.product.on of t.e +

s.il Biot. in t.e Arava Valley of Negev Des.rt.Is.ael

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Pedos.here 2010年第3期20卷 273-284页

作者： s. PEN-MOURAt.V t. MYBLAt.I. s.AMIR G. BARNEs. Y. s.0}INBERGER t.e Mina & Everard Goodman Facult. of Life s.iences Bar-Ilan University

s.il microorganis. biomas. and res.irat.on and t.e s.il nemat.de communit. were obs.rved in t.e hypers.line des.rt.valley t.at.is.found bet.een t.e Dead s.a and t.e Red s.a. t.e lowes.0}point.of t.e valley is.approximat.ly 400 m below s.a level, and is.t.e lowes.0}point.on eart.. s.il s.mples.(n = 72) were collect.d from t.e 0-10 and 10-20 cm s.il layers.at.different.alt.t.des.(from -400 t. +100 m) in t.e open s.aces.bet.een plant. during one of t.e mos.0}ext.eme xeric periods. Bot. s.il microbial res.irat.on and microbial biomas. were found t. be negat.vely dependent.on s.il mois.0}re (s.) and organic mat.er (OM), and pos.t.vely dependent.on pH values. t.e phys.cal-chemical charact.ris.0}cs.of t.is.hypers.line area were ext.emely unfavorable for t.e s.il nemat.de communit.es. and t.e nemat.des.were ent.rely abs.nt.in t.e open area below s.a level. t.e bact.rivores.were found t. be t.e mos.0}res.s.0}nt.nemat.des.in t.is.hyperarid region, wit. t.e Wils.nema being t.e mos.0}wides.read genus. We s.gges.0}t.at.nit.ogen availabilit. may play a crucial role in t.e below-ground s.il int.ract.on in t.is.region, wit. bact.rivore nemat.des.as.indicat.rs.of nit.ogen availabilit..

关键词： Dead s.a microbial biomas. nemat.de communit. res.irat.on t.ophic groups