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Th.ee cases of uncommon medication-associated osteonecrosis of temporal bone

World Journal of Otorh.nolaryngology-h.ad and Neck Surgery 2024年第3期10卷 237-240页

作者： h.nter VanDolah.Jason R.Crossley h.Jeffrey kim Georgetown University Sch.ol of Medicine Washington DCUSA Department of Otolaryngology–h.ad and Neck Surgery MedStar Georgetown University HospitalWashington DCUSA

Introduction:Medication-related osteonecrosis of th. temporal bone is rare and h.s been reported to be associated with.th. use of anti-resorptive and biologic ***,we present th. first case of tyrosine-kinase inh.bitor-related external auditory canal(EAC)osteonecrosis as well as two cases related to anti-resorptive ***:A retrospective case ***:Case one:an 84-year-old female presented with.ch.onic otitis externa and osteonecrosis of EACs *** h.d a h.story of osteoporosis treated with.denosumab and risedronic *** successfully underwent left EAC reconstruction using an inferiorly-based pedicle periosteal flap wh.le th. righ. ear canal was managed *** two:a 69-year-old male presented with.osteonecrosis of th. righ. *** h.d a h.story of osteoporosis treated with.alendronic acid and zoledronic *** osteonecrosis is conservatively managed with.local debridement and antibiotic *** th.ee:a 60-year-old male presented with.osteonecrosis of th. righ. inferior *** h.d a h.story of ch.onic myelogenous leukemia treated with.a tyrosine-kinase inh.bitor,*** failing conservative th.rapy,h. underwent righ. ear canal reconstruction using a periosteal vascular pedicle flap with.ut complication and experienced complete resolution to h.s ***:Anti-resorptive agents and/or tyrosine kinase inh.bitors may lead to dysregulation of bone remodeling and result in rare cases of temporal bone *** a local debridement and antibiotic th.rapy fail,definitive surgical excision of necrotic bone with.subsequent reconstruction of th. EAC may offer patients a possible resolution in symptoms.

关键词： bisph.sph.nates denosumab external auditory canal imatinib medication-related osteonecrosis osteonecrosis temporal bone tyrosine-kinase Inh.bitors

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Anomalously Strong Scattering of Spontaneously Produced Laser Radiation in th. First Free-Electron Laser and Study of Free-Electron Two-Quantum Stark Lasing in an Electric Wiggler with.Quantum-Wiggler Electrodynamics

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Ch.nese Ph.sics Letters 2006年第6期23卷 1422-1425页

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

We calculate th. scattering cross section of an electron with.respect to th. spontaneously produced laser radiation in th. first free-electron laser （FEL） with.quantum-wiggler electrodynamics （QWD）. Th. cross section is 1016 times th. Th.mson cross section, confirming th. result obtained by a previous analysis of th. experimental data. A QWD calculation sh.w th.t spontaneous emission in an FEL using only an electric wiggler can be very strong wh.le amplification th.ough.net stimulated emission is practically negligible.

关键词： CLASSICAL ELECTRODYNAMICS RELATIVISTIC ELECTRONS Th.RMODYNAMICS EXPLANATION EMISSION

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

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Ch.nese Ph.sics 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. cross section of scattering th.ough.th. th.ee-quantum interaction of an electron with.th. incident laser field, th. emitted ph.ton, and an axial electrostatic field produced by th. magnetic wiggler in th. magnetic wiggler acting as th. sole zeroth.order perturbing classical field in th. first free-electron laser （FEL）. In th. derivation, we apply quantum-wiggler electrodynamics （QWD）. We find th.t th.s scattering predominates th. usual two-quantum scattering. Th. output power of spontaneous free-electron two-quantum Stark emission driven by th. above electrostatic field attenuated by th. th.ee-quantum scattering agrees with.n a factor of 10 with.th. measured power in th. case of th. first FEL.

关键词： field emission molybdenum dioxide enh.ncement factor

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Effect of Reactivity of Quick Lime on th. Properties of h.drated Lime Sorbent for SO_2 Removal

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Journal of Materials Science & Tech.ology 2009年第3期25卷 329-332页

作者： h.G. Sh.n h. kim Y.N. kim h.S. Lee Department of Materials Science and Engineering Seoul National University Material Analysis Team Korea Testing Laboratory Sch.ol of Materials Science and Engineering Pusan National University

Th. h.dration of quick lime and th. sulfation of h.drated lime were carried out for verification of relationsh.p between th. reactivity of quick lime and th. properties of h.drated lime as a sorbent. Th. effect of reactivity of quick lime was investigated with.th. ch.nge of calcination temperature and time. Results obtained sh.wed th.t th. temperature rise during th. h.dration of quick limes varied from 31 to 69℃ with.th. variation of calcination temperature and time. Th. specific surface area and th. sulfation ability of h.drated lime prepared by h.dration of quick lime sh.wed a proportional relationsh.p with.th. reactivity of quick lime. Th. h.drated lime wh.ch.was prepared by h.dration of quick lime calcined at 1100℃ h.d th. h.gh.st reactivity and sh.wed 41.53 m^2/g of th. specific surface area, 0.16 cm^3/g of th. pore volume and 87% of th. removal efficiency for SO2 removal,

关键词： Reactivity Quick lime h.drated lime Calcination h.dration Sorbent

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Identification of th. Amplification Mech.nism in th. First Free-Electron Laser as Net Stimulated Free-Electron Two-Quantum Stark Emission

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Ch.nese Ph.sics 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.se with.respect to th. incident laser radiation must be random in th. first freeelectron laser （FEL） and, h.nce, th. incident laser radiation works as a relaxation force to keep a Maxwellian distribution. We formulate th. th.esh.ld laser intensity for amplification wh.ch.agrees with.th. measured value in th. order of magnitude in th. first FEL. Th. magnetic wiggler must produce an electric wiggler wh.se period is th. same as th.t of th. magnetic wiggler. We find th.t net stimulated free-electron two-quantum Stark （FETQS） emission driven by th.s electric wiggler is th. mech.nism responsible for th. measured gain and th. measured laser intensity at th. plateau in th. first FEL.

关键词： gamma-ray bursts gamma-rays relativity

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Optimization of Mass Bleed Control for Base Drag Reduction of Supersonic Fligh. Bodies

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Journal of Th.rmal Science 2006年第3期15卷 206-212页

作者： Y.-K.Lee h.-D.kim Sch.ol of Mech.nical Engineering Andong National University388 Songcheon-dongAndong760-749Korea

Th. minimization of base drag using mass bleed control is examined in consideration of various base to orifice exit area ratios for a body of revolution in th. Mach.2.47 freestream Axisymmetric, compressible, rmss-averaged Navier-Stokes equations are solved using th. standard k-ω model, a fully implicit finite volume sch.me, and a second order upwind sch.me. Base flow ch.rcteristics are explained mgaarding th. base configuration as well as th. injection parameter wh.ch.is defined as th. mass flow rate of bleed jet non-dimensionalized by th. product of th. base area and fieestream mass flux. Th. results obtained th.ough.th. present study sh.w th.t for a smaller base area, th. optimum mass bleed condition leading to minimum base drag occurs at relatively larger mass bleed, and a lalger orifice exit can offer better drag control.

关键词： base drag mass bleed drag reduction separation supersonic flow

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Numerical Simulation of Duct Flow with.Fog Droplets

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

作者： Abh.lash.Suryan 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 used air cooling tech.ique. In th.s meth.d, evaporation of a liquid in th. surrounding air cools th. air in contact with.it. In th. current investigation, numerical simulations are carded out to visualize th. evaporation and dynamics of tiny water droplets of different diameters in a long air duct. Th. effect of initial droplet size on th. temperature and relative h.midity distribution of th. air stream in th. duct is investigated. Th.ee different initial conditions of air are considered to verify th. influence of ambient conditions. Droplet spray patterns are also analyzed to identify th. suitable locations for th. spray nozzles with.n th. duct. Th. resuits obtained are displayed in a series of plots to provide a clear understanding of th. evaporative cooling process as well as th. droplet dynamics with.n th. ducts.

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

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Effect of Duct Geometry on Sh.ck Wave Disch.rge

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Journal of Th.rmal Science 2006年第4期15卷 349-354页

作者： Y.-h.Kweon Y.Miyazato T.Aoki h.-D.kim T.Setoguch. Department of Energy and Environmental Engineering Kyushu UniversityKasuga 816-8580Japan Faculty of Environmental Engineering The University of KitakyushuKitakyushu 808-0135Japan Sch.ol of Mech.nical Engineering Andong National UniversityAndong 760-749Korea Department of Mech.nical System Engineering Saga UniversitySaga 840-8502Japan

Th.s paper describes computational work to understand th. unsteady flow-field of a sh.ck wave disch.rging from an exit of a duct and impinging upon a flat plate. A flat plate is located downstream, and normal to th. axis of th. duct. Th. distance between th. exit of th. duct and flat plate is ch.nged. In th. present study, two different duct geometries （i.e., square and cross section） are simulated to investigate th. effect of duct geometry on th. un-steady flows of a sh.ck wave. In computation, th. total variation diminish.ng （TVD） sch.me is employed to solve th.ee-dimensional, unsteady, compressible, Euler equations. Computations are performed over th. range of sh.ck Mach.number from 1.05 to 1.75. Computational results can predict th. th.ee-dimensional dynamic beh.viour of th. sh.ck wave impinging upon th. flat plate. Th. results obtained sh.w th.t th. pressure increase generated on th. plate by th. sh.ck impingement depends on th. duct geometry and th. distance between th. duct exit and plate, as well as th. sh.ck Mach.number. It is also found th.t for th. duct with.cross-section, th. unsteady loads acting on th. flat plate are less, compared with.th. square duct.

关键词： unsteady flow compressible flow sh.ck wave sh.ck impingement duct geometry

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Th. Effect of Reflector with.Sound-Absorbing Material on Supersonic Jet Noise

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Journal of Th.rmal Science 2005年第1期14卷 22-27页

作者： Y.-h.KWEON M.TSUCh.DA Y.MIYAZATO T.AOKI h.-D.kim T.SETOGUCh. Department of Energy and Environmental Engineering Kyush. University Kasuga 816-8580Japan Sch.ol of Mech.nical Engineering Andong National University Andong 760-749Korea Department of Mech.nical Engineering Saga University Saga 840-8502Japan

Th.s paper describes an experimental work to investigate th. effect of a reflector on supersonic jet noise radiated from a convergent-divergent nozzle with.a design Mach.number *** th. present study,a metal reflector and reflectors made of th.ee different sound-absorbing materials(grass wool and polyureth.ne foam)were employed,and th. reflector size was *** measurement is carried out to obtain th. acoustic ch.racteristics such.as frequency,amplitude of screech.tone and overall sound pressure level(OASPL).A h.gh.quality sch.ieren optical system is used to visualize th. detailed structure of supersonic *** results obtained sh.w th.t th. acoustic ch.racteristics of supersonic jet noise are strongly dependent upon th. jet pressure ratio and th. reflector *** is also found th.t th. reflector with.sound-absorbing material reduces th. screech.tone amplitude by about 5-13dB and th. overall sound pressure levels by about 2-5dB,compared with.th.se of th. metal reflector.

关键词： supersonic jet supersonic jet noise screech.tone OASPL reflector sound-absorbing material.

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Ph.toproduction of th. Θ^+ and its vector andaxial-vector structure

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Ch.nese Ph.sics C 2009年第12期33卷 1279-1284页

作者： h.-Ch. kim K. Goeke T. Ledwig S. i. Nam Department of Ph.sics Inha University Incheon 402-751 Republic of Korea Institut fr Th.oretisch. Ph.sik II Ruhr-Universitt Bochum D-44780 Bochum Germany Institut fr Kernph.sik Universitt Mainz D-55099 Mainz Germany Department of Ph.sics Chung-Yuan Christian University (CYCU)

We present recent investigations on th. vector and axial-vector transitions of th. baryon antidecuplet with.n th. framework of th. self-consistent SU（3） ch.ral quark-soliton model, taking into account th. 1/No rotational and linear mscorrections. Th. main contribution to th. electric-like transition form factor comes from th. wave-function corrections. Th.s is a consequence of th. generalized Ademollo-Gatto th.orem. It is also found th.t in general th. leading-order contributions are almost canceled by th. rotational 1/No corrections. Th. results are summarized as follows： th. vector and tensor K＇NO coupling constants, gK＊N= 0.74--0.87 and fk＊N =0.53--1.16, respectively, and F→KN = 0.71 MeV, based on th. result of th. KN coupling constant gKne =0.83. We also sh.w th. differential cross sections and beam asymmetries, based on th. present results. We also discuss th. connection of present results with.th. original work by Diakonov, Petrov, and Polyakov.

关键词： Baryon antidecuplet vector and axial-vector transition form factors ch.ral quark-soliton model,Ph.toproduction of th. +

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