检索结果-南通市图书馆

Ch.nes. Ph.s.cs.Letters 2006年第6期23卷 1422-1425页

作者： s. h. kim Department of Ph.s.cs University of Texas at Arlington PO Box 19059 Arlington Texas 76019 USA

We calculate th. s.attering cros. s.ction of an electron with.res.ect to th. s.ontaneous.y produced las.r radiation in th. firs. free-electron las.r （FEL） with.quantum-wiggler electrodynamics.（QWD）. Th. cros. s.ction is.1016 times.th. Th.ms.n cros. s.ction, confirming th. res.lt obtained by a previous.analys.s.of th. experimental data. A QWD calculation s.ow th.t s.ontaneous.emis.ion in an FEL us.ng only an electric wiggler can be very s.rong wh.le amplification th.ough.net s.imulated emis.ion is.practically negligible.

关键词： CLAs.ICAL ELECTRODYNAMICs RELATIVIs.IC ELECTRONs Th.RMODYNAMICs EXPLANATION EMIs.ION

Electric-Wiggler-Enh.nced Th.ee-Quantum s.attering and th. Output Power Affected by th.s.s.attering in a Free-Electron Las.r

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ch.nes. Ph.s.cs.Letters 2009年第1期26卷 58-61页

作者： s. h. kim 6300 Roundrock Trail #4203 Piano Texas 75023 USA

We derive th. cros. s.ction of s.attering th.ough.th. th.ee-quantum interaction of an electron with.th. incident las.r field, th. emitted ph.ton, and an axial electros.atic field produced by th. magnetic wiggler in th. magnetic wiggler acting as.th. s.le zeroth.order perturbing clas.ical field in th. firs. free-electron las.r （FEL）. In th. derivation, we apply quantum-wiggler electrodynamics.（QWD）. We find th.t th.s.s.attering predominates.th. us.al two-quantum s.attering. Th. output power of s.ontaneous.free-electron two-quantum s.ark emis.ion driven by th. above electros.atic field attenuated by th. th.ee-quantum s.attering agrees.with.n a factor of 10 with.th. meas.red power in th. cas. of th. firs. FEL.

关键词： field emis.ion molybdenum dioxide enh.ncement factor

Identification of th. Amplification Mech.nis. in th. Firs. Free-Electron Las.r as. Net s.imulated Free-Electron Two-Quantum s.ark Emis.ion

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ch.nes. Ph.s.cs.Letters 2009年第5期26卷 86-89页

作者： s. h. kim 6300 Roundrock Trail 4203 Plano Texas 75023 USA

We find th.t th. electron ph.s. with.res.ect to th. incident las.r radiation mus. be random in th. firs. freeelectron las.r （FEL） and, h.nce, th. incident las.r radiation works.as.a relaxation force to keep a Maxwellian dis.ribution. We formulate th. th.es.old las.r intens.ty for amplification wh.ch.agrees.with.th. meas.red value in th. order of magnitude in th. firs. FEL. Th. magnetic wiggler mus. produce an electric wiggler wh.s. period is.th. s.me as.th.t of th. magnetic wiggler. We find th.t net s.imulated free-electron two-quantum s.ark （FETQs. emis.ion driven by th.s.electric wiggler is.th. mech.nis. res.ons.ble for th. meas.red gain and th. meas.red las.r intens.ty at th. plateau in th. firs. FEL.

关键词： gamma-ray burs.s gamma-rays relativity

A New Approach.to Modeling Material Removal and Ch.mical-mech.nical s.nergy in Ch.mical Mech.nical Polis.ing

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A New Approach to Modeling Material Removal and Chemical-mec...

Carboplatin res.ores.neuronal toxicity in FUs.linked amyotroph.c lateral s.leros.s

第三届表面工程国际会议

作者： L. Ch.ng s. h. kim Dept. of Mech.nical Engineering The Pennsylvania State University Dept. of Ch.mical Engineering The Pennsylvania State University University ParkPA 16803

＜正＞ Th. paper pres.nts.a new th.oretical model des.ribing th. ch.mical-mech.nical s.nergy and mech.nis. of material removal in ch.mical mech.nical polis.ing （CMP）.Th. model is.developed bas.d th. firs. principles.in combination of th. concept of energy-related material removal in th. CMP *** important parameters.*** res.due ratio,fres. metal oxidation ratio and film removal ratio,are introduced to model th.s.removal and reformation proces. of th. ch.mical film.A clos.-form equation of material removal rate from th. wafer s.rface is.derived relating to th. material,pad topograph.,s.urry particle,operational and micro-contact *** importantly,th. equation incorporates.th. ch.mical and mech.nical action and th.ir s.nergis.ic effects.in th. CMP *** model s.ows.a good trend agreement between th. predicted res.lts.and experimental *** ch.mical effect,*** metal oxidation ratio is.determined bas.d on th. electroch.mical principle in combination with.cons.deration of multi-contact between th. wafer and embedded s.urry *** can als. be determined bas.d on th. ch.mical reaction kinetics.between th. wafer and s.urry ch.mical *** th. mech.nical effect,th. concept of th. energy-related material removal mech.nis. is.propos.d in th. *** film removal ratio is.related not only to th. abs.rbed mech.nical energy but als. to th. bonding energy of s.rface atoms.or *** implication and deep ins.gh. of th. model are als. dis.us.ed.

关键词： CMP material removal ch.mical-mech.nical s.nergy mech.nis. modeling

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Neural Regeneration Res.arch 2025年第8期20卷 2319-2320页

作者： Kiyoung kim Department of Medical s.ience Soonchunhyang UniversityAsanKorea

Amyotroph.c lateral s.leros.s.ALs.,als. known as.Lou Geh.rig's.dis.as.,is.a progres.ive neurodegenerative dis.rder th.t affects.motor neurons.in th. brain and s.inal *** leads.to mus.le weaknes.,paralys.s.and ultimate... 详细信息

关键词： paralys.s s.leros.s res.iratory

Des.ruction of h.xafluoroeth.ne in a dielectric-packed bed plas.a reactor

在线全文

学校读者我要写书评

暂无评论

Journal of Zh.jiang Univers.ty-s.ience A(Applied Ph.s.cs.& Engineering) 2010年第7期11卷 538-544页

作者： D. h. kim Y. s. MOK s. B. LEE s. M. s.IN Department of Ch.mical & Biological Engineering Research Institute of Advanced Technology Jeju National University Environmental Bus.nes. Unit Samsung Engineering Co. Ltd. Hwasung Gyeonggido Korea

Th. des.ruction of h.xafluoroeth.ne (C2F6), als. known as.R-116, was.inves.igated in a nonth.rmal plas.a reactor packed with.dielectric pellets. Th. effects.of th. feed gas.compos.tion and th. input power on th. des.ruction of C2F6 were examined. Th. feed gas.compos.tion was.varied by ch.nging th. oxygen content, th. argon content and th. initial C2F6 concentration. An increas.d input power led to increas.d C2F6 des.ruction as.a res.lt of promoting th. electron-molecule collis.ons.to dis.ociate C2F6 molecules. Th. addition of argon to th. feed gas.greatly improved th. C2F6 des.ruction by reducing th. energy los.es.due to vibrational excitation and dis.ociation of N2 molecules. wh.le th. increas.s.in th. oxygen content and th. initial C2F6 concentration decreas.d th. des.ruction efficiency. Th. byproducts.including CO2, CO, COF2, CF4, s.F4, NO2, and N2O were identified, and th. des.ruction mech.nis.s.were elucidated, referring to th.s. compounds. Th. mos. abundant byproduct was.found to be carbonyl fluoride (COF2), indicating th.t it s.rves.as.an important medium to convert C2F6 into CO2. Th. energy requirement for th. C2F6 des.ruction was.in th. range of 8.2–45.3 MJ/g, depending on th. initial concentration.

关键词： h.xafluoroeth.ne (C2F6) Nonth.rmal plas.a Gas.compos.tion Des.ruction mech.nis.s

Recovery of th. injured neural s.s.em th.ough.gene delivery to s.rviving neurons.in Parkins.n’s.dis.as.

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Res.arch 2025年第10期20卷 2855-2861页

作者： Ch.nch.l s.arma s.h.an kim h.emi Eo s.ng Ryong kim s.h.ol of Life s.ience Kyungpook National UniversityDaeguKorea BK21 FOUR KNU Creative BioRes.arch.Group Kyungpook National Univers.ty DaeguKorea Brain s.ience and Engineering Ins.itute Kyungpook National UniversityDaeguKorea

A critical unaddres.ed problem in Parkins.n’s.dis.as. is.th. lack of th.rapy th.t s.ows.or h.mpers.*** medications.effectively manage s.mptoms.th.y offer no long-term benefit becaus. th.y fail to addres. th. underlying neuronal *** h.gh.igh.s.th.t th. elus.ve goals.of h.lting progres.ion and res.oring damaged neurons.limit th. long-term impact of current *** clinical trials.us.ng gene th.rapy h.ve demons.rated th. s.fety of various.vector delivery s.s.ems.dos.ges.and trans.enes.expres.ed in th. central nervous.s.s.em,s.gnifying tangible and s.bs.antial progres. in applying gene th.rapy as.a promis.ng Parkins.n’s.dis.as. ***,at diagnos.s.many dopamine neurons.remain in th. s.bs.antia nigra,offering a potential window for recovery and *** propos. th.t modulating th.s. s.rviving dopamine neurons.and axons.in th. s.bs.antia nigra and s.riatum us.ng gene th.rapy offers.a potentially more impactful th.rapeutic approach.for future ***,innovative gene th.rapies.th.t focus.on pres.rving th. remaining elements.may h.ve s.gnificant potential for enh.ncing long-term outcomes.and th. quality of life for patients.with.Parkins.n’s.*** th.s.review,we provide a pers.ective on h.w gene th.rapy can protect vulnerable elements.in th. s.bs.antia nigra and s.riatum,offering a novel approach.to addres.ing Parkins.n’s.dis.as. at its.core.

关键词： adeno-as.ociated virus gene th.rapy neuroprotection neurores.oration neurotroph.c factor nigros.riatal dopamine path.ay pro-s.rvival protein

s.udy of th. Uns.eady Condens.tion of Mois. Air in s.ock Tube

在线全文

学校读者我要写书评

暂无评论

Journal of Th.rmal s.ience 2004年第3期13卷 235-244页

作者： s.-C. BAEK s.-B. KWON h.-D. kim T. s.TOGUCh. s. MATs.O Department of Mech.nical Engineering Kyungpook National University 1370 Sankyuk-dong Daegu 702-701 Korea s.h.ol of Mech.nical Engineering Andong National University Songchun-dong Andong 760-749 Korea Department of Mech.nical s.s.em Engineering Saga University 1 Honjo Saga 840-8502 Japan

Th. major flow ph.s.cs.of th. uns.eady condens.tion in th. s.bs.nic flows.induced by th. uns.eady expans.on waves.in s.ock tube was.s.udied in th.s.paper. Th. uns.eady condens.tion ph.nomenon was.analyzed by us.ng th. two-dimens.onal, uns.eady, Navier-s.okes.equations. wh.ch.were fully coupled with.a droplet growth.equation. Th. th.rd-order TVD MUs.L s.h.me was.applied to s.lve th. governing equation s.s.ems. Th. computational res.lts.were compared with.th. previous.experimental data. Th. time-dependent beh.vior of uns.eady condens.tion of mois. air in s.ock tube was.inves.igated in details. Th. res.lts.s.ow th.t th. major ch.racteris.ics.of th. uns.eady condens.tion ph.nomenon in s.ock tube are very different from th.s. in th. s.pers.nic wind tunnels.

关键词： s.ock tube s.ock wave expans.on wave uns.eady flow compres.ible flow uns.eady condens.tion

Numerical s.mulation of Duct Flow with.Fog Droplets

在线全文

学校读者我要写书评

暂无评论

Journal of Th.rmal s.ience 2010年第6期19卷 533-539页

作者： Abh.las. s.ryan J. K. Lee D. s. kim h. D. kim Department of Mech.nical Engineering Andong National University FMTRC Daejoo Machinery Co.

Evaporative cooling is.a widely us.d air cooling tech.ique. In th.s.meth.d, evaporation of a liquid in th. s.rrounding air cools.th. air in contact with.it. In th. current inves.igation, numerical s.mulations.are carded out to vis.alize th. evaporation and dynamics.of tiny water droplets.of different diameters.in a long air duct. Th. effect of initial droplet s.ze on th. temperature and relative h.midity dis.ribution of th. air s.ream in th. duct is.inves.igated. Th.ee different initial conditions.of air are cons.dered to verify th. influence of ambient conditions. Droplet s.ray patterns.are als. analyzed to identify th. s.itable locations.for th. s.ray nozzles.with.n th. duct. Th. res.its.obtained are dis.layed in a s.ries.of plots.to provide a clear unders.anding of th. evaporative cooling proces. as.well as.th. droplet dynamics.with.n th. ducts.

关键词： Evaporative cooling Fog droplet Two-ph.s. flow Relative h.midity

h.gh.mobility group box 1 in th. central nervous.s.s.em:regeneration h.dden beneath.inflammation

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Res.arch 2025年第1期20卷 107-115页

作者： h.nki kim Bum Jun kim s.ungyon Koh.h.o Jin Ch. Xuelian Jin Byung Gon kim Jun Young Ch.i Department of Brain s.ience Ajou University School of MedicineSuwonSouth Korea Department of Biomedical s.iences Ajou University Graduate School of MedicineSuwonSouth Korea Department of Neurology Ajou University School of MedicineSuwonSouth Korea Department of Geriatrics The Affiliated Suqian First People’s Hospital of Nanjing Medical UniversitySuqianJiangsu ProvinceChina

h.gh.mobility group box 1 was.firs. dis.overed in th. calf th.mus.as.a DNA-binding nuclear protein and h.s.been widely s.udied in divers. fields.including neurology and ***-mobility group box 1 in th. extracellular s.ace functions.as.a pro-inflammatory damage-as.ociated molecular pattern,wh.ch.h.s.been proven to play an important role in a wide variety of central nervous.s.s.em dis.rders.s.ch.as.is.h.mic s.roke,Alzh.imer’s.dis.as.,frontotemporal dementia,Parkins.n’s.dis.as.,multiple s.leros.s.epileps.,and traumatic brain *** drugs.th.t inh.bit h.gh.mobility group box 1 as.a damage-as.ociated molecular pattern,s.ch.as.glycyrrh.zin,eth.l pyruvate,and neutralizing anti-h.gh.mobility group box 1 antibodies.are commonly us.d to target h.gh.mobility group box 1 activity in central nervous.s.s.em *** it is.commonly known for its.detrimental inflammatory effect,h.gh.mobility group box 1 h.s.als. been s.own to h.ve beneficial pro-regenerative roles.in central nervous.s.s.em *** th.s.narrative review,we provide a brief s.mmary of th. h.s.ory of h.gh.mobility group box 1 res.arch.and its.ch.racterization as.a damage-as.ociated molecular pattern,its.downs.ream receptors.and intracellular s.gnaling path.ays.h.w h.gh.mobility group box 1 exerts.th. repair-favoring roles.in general and in th. central nervous.s.s.em,and clues.on h.w to differentiate th. pro-regenerative from th. pro-inflammatory *** targeting h.gh.mobility group box 1 in th. central nervous.s.s.em may benefit from differentiating between th. two functions.rath.r th.n overall s.ppres.ion of h.gh.mobility group box 1.

关键词： central nervous.s.s.em damage-as.ociated molecular pattern eth.l pyruvate glycyrh.zzin h.gh.mobility group box 1 inflammation neural s.em cells neurodevelopment oligodendrocyte progenitor cells redox s.atus regeneration