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中国神经精神疾病杂志 2006年第5期32卷 392-398页

作者： Hyun Ho Jung Chan Hyung Kim jong hee chang Yong Gou Park Sang Sup Chung Jin Woo chang 韩国汉城延世大学医学院神经外科

背景强迫症是一种较为常见的慢性、致残的疾病，患者出现无法自控的强迫思维及强迫行为。10％以上的强迫症病人对药物和行为治疗无效。对一些常规治疗无效的难治性强迫症患者，神经外科已经开展一些手术治疗，例如：扣带前回毁损、脑白... 详细信息

背景强迫症是一种较为常见的慢性、致残的疾病，患者出现无法自控的强迫思维及强迫行为。10％以上的强迫症病人对药物和行为治疗无效。对一些常规治疗无效的难治性强迫症患者，神经外科已经开展一些手术治疗，例如：扣带前回毁损、脑白质切断术、尾状核下束切断、内囊前支毁损。扣带前回毁损相对来说比较安全同时没有明显的副作用，但是也有术后存在认知障碍的报道。为判断立体定向双侧扣带前回毁损是否是一种适合难治性强迫症的治疗，我们评价了立体定向双侧扣带前回毁损术的长期疗效及其副作用。方法患者筛选：在1999年3月至2003年4月间，17例难治性强迫症患者（男10例，女7例）接受了双侧扣带前回毁损术，并且接受了超过2年的随访。患者的选择标准如下：患者符合美国精神障碍诊断与统计手册第4版（DSM-Ⅳ）强迫症的诊断标准，病程超过3年，疾病导致社会心理功能降低。每位患者皆由两位精神科医师依照DSM-Ⅳ的AxisⅠ和AxisⅡ的疾病诊断标准行临床诊断。如伴有精神病性症状，就先用一线药物彻底治疗。手术方法：立体定向的靶点通过与MRI配套的Leksell适配器，在GESigma1．5 T的机器上得以确认。局部麻醉下，在两侧的冠状缝中线外20mm颅骨钻孔。将尖端直径．1．8mm，长度10mm的电极插至靶点，用85℃，90S进行射频毁损。在双侧扣带前回，每侧各4个射频毁损灶，2个针道。第一个射频毁损灶在两侧侧脑室前角后缘15mm，侧脑室顶部上2mm，旁开中线7mm处。射频电极接着回撤8mm，制作第二个射频毁损灶。第三个射频毁损处在两侧侧脑室前角后缘22mm，侧脑室顶部上2mm，旁开中线7mm处。再往上8mm，制作第四个射频毁损灶。结果是出现类似椭圆柱形的射频毁损灶，大约高18mm、前后径13mm，横径6mm。术前和术后随访评估：两位精神科医师用Yale-Brown强迫症量表（Y-BOCS）、临床总体印象量表（CGI）、汉密顿抑郁量表（HAMD）、汉密顿焦虑量表（HAMA），分别在手术前1个月、术后12个月、术后24个月对患者进行评估。评估的精神科医师接受了培训，Kappa值超过0．75，以确保评估的准确性。在我们研究中，患者的Y-BOCS得分改善35％或更高、CGI评分为1（极其显著改善）或者2（显著改善）；由专业的临床精神科医生对患者进行一套固定的神经心理测试，测试分别在术前1个月、术后12个月、24个月进行。这些测试包括：K—WAIS测验，视觉空间功能（RCFT），Hopkins语言学习测验（HVLT），威斯康星卡片分类测验（WCST），口语流畅测验（COWAT）。K-WAIS评分由韦氏成人智力量表（WAIS—R）改编而来，以产生总智商（IQ）、言语IQ和行为IQ来测量智力水平。RCFT评分用于测试空间构建能力。记忆力也包括回忆的精确性、瞬时回忆、延迟回忆和识别指数等的得分。HVLT用于测量口头记忆能力和学习能力。使用WCST和COWAT评分来检查认知的灵活性和执行功能。在WCST中，正确、错误反应的总数，完成的项目数，持续的反应，持续的错误数都用于评分。COWAT评分采用字母翻译和目录翻译的单词数目，字母翻译用来检查语音的流利，目录翻译用来评价语义流利性。使用Wileoxon符号秩检验对术前的Y—BOCS，HAMD，HAMA评分和术后6、12个月的评分进行比较，使用Wileoxon符号秩检验对手术前和手术后12个月的K—WAIS，RCFT，HVLT，WCST，COWAT评分进行比较。统计软件采用SPSS10。结果扣带回毁损术后强迫、抑郁、焦虑症状均改善：Y-BOCS，CGI、HAMD，HAMA评分显示了扣带回毁损术的有效性，在12个月的随访中，与术前Y-BOCS评分相比，改善率为36％，在24个月的随访中，改善率升至48％。术前、术后认知功能和记忆的改变：手术前和手术后24个月的K-WAIS，RCFT，HVLT，COWAT评分没有显著性差异。在WCST评分中，与术前基线相比，术后的错误总数、持续错误数和反应数明显减少。术后的错误总数、持续错误数和反应数的改变说明在扣带回毁损术后执行功能的提高。在术后2—3个月，3例患者有记忆障碍，但持续时间少于2个月。结论强迫症的扣带回毁损术术后24个月的随访结果显示症状明显改善，但没有认知功能的改变，包括智商、言语、视觉空间记忆和执行功能等均没有改变。

关键词：强迫症扣带前回毁损术精神外科

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Aligned Ion Conduction Pathway of Polyrotaxane‑Based Electrolyte with Dispersed Hydrophobic Chains for Solid‑State Lithium–Oxygen Batteries

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Nano-Micro Letters 2025年第2期17卷 169-186页

作者： Bitgaram Kim Myeong‑chang Sung Gwang‑hee Lee Byoungjoon Hwang Sojung Seo Ji‑Hun Seo Dong‑Wan Kim Department of Materials Science and Engineering Korea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea School of Civil Environmental and Architectural EngineeringKorea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea Materials Science and Chemical Engineering Center Institute for Advanced Engineering(IAE)Yongin 17180Republic of Korea

A critical challenge hindering the practical application of lithium–oxygen batteries(LOBs)is the inevitable problems associated with liquid electrolytes,such as evaporation and safety *** study addresses these problems by proposing a modified polyrotaxane(mPR)-based solid polymer electrolyte(SPE)design that simultaneously mitigates solvent-related problems and improves ***-SPE exhibits high ion conductivity(2.8×10^(−3)S cm^(−1)at 25℃)through aligned ion conduction pathways and provides electrode protection ability through hydrophobic chain *** this mPR-SPE into solid-state LOBs resulted in stable potentials over 300 *** situ Raman spectroscopy reveals the presence of an LiO_(2)intermediate alongside Li_(2)O_(2)during oxygen *** situ X-ray diffraction confirm the ability of the SPE to hinder the permeation of oxygen and moisture,as demonstrated by the air permeability *** present study suggests that maintaining a low residual solvent while achieving high ionic conductivity is crucial for restricting the sub-reactions of solid-state LOBs.

关键词： Solid polymer electrolyte Lithium-oxygen batteries Polyrotaxane ion conductivity Hydrophobic chain

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Characteristics of damaged layer in micro-machining of copper material

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中国有色金属学会会刊：英文版 2009年第B09期19卷 295-300页

作者： Dong-hee KWON Jeong-Suk KIM Myung-chang KANG Se-Hun KWON jong-Hwan LEE School of Mechanical Engineering Pusan National University National Core Research Center for Hybrid Materials Solution Pusan National University Department of Mechatronics Busan College of Korea Polytechnic Ⅶ

The study on damaged layer is necessary for improving the machinability in micro-machining because the damaged layer affects the micro mold life and micro machine parts. This study examined the ultra-precision micro-machining characteristics, such as cutting speed, feed rate and cutting depth, of a micro-damaged layer produced by an ultra-high speed air turbine spindle. The micro cutting force, surface roughness and plastic deformation layer were investigated according to the machining conditions. The damaged layer was measured using optical microscope on samples prepared through metallographic techniques. The scale of the damaged layer depends on the cutting process parameters, particularly, the feed per tooth and axial depth of the cut. According to the experimental results, the depth of the damaged layer is increased by increasing the feed per tooth and cutting depth, also the damaged layer occurs less in down-milling compared with up-milling during the micro-machining operation.

关键词：机械加工性微观特征损伤层铜材样品制备技术微型机器切削速度切削深度

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Strong interlayer coupling and stable topological flat bands in twisted bilayer photonic Moiré superlattices

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Light(Science & Applications) 2022年第10期11卷 2523-2529页

作者： chang-Hwan Yi hee Chul Park Moon Jip Park Center for Theoretical Physics of Complex Systems Institute for Basic Science(IBS)Daejeon 34126Republic of Korea

The moiré superlattice of misaligned atomic bilayers paves the way for designing a new class of materials with wide *** this work,we propose a photonic analog of the moiré superlattice based on dielectric resonator *** sharp contrast to van der Waals materials with weak interlayer coupling,we realize the strong coupling regime in a moiré superlattice,characterized by cascades of robust flat bands at large ***,we find that these flat bands are characterized by a non-trivial band topology,the origin of which is the moiré pattern of the resonator *** physical manifestation of the flat band topology is a robust one-dimensional conducting channel on edge,protected by the reflection symmetry of the moiré *** explicitly breaking the underlying reflection symmetry on the boundary terminations,we show that the first-order topological edge modes naturally deform into higher-order topological corner *** work pioneers the physics of topological phases in the designable platform of photonic moiré superlattices beyond the weakly coupled regime.

关键词： topological bands coupling

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Bloch theorem dictated wave chaos in microcavity crystals

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Light(Science & Applications) 2023年第6期12卷 994-1000页

作者： chang-Hwan Yi hee Chul Park Moon Jip Park Center for Theoretical Physics of Complex Systems Institute for Basic Science(IBS)Daejeon 34126Republic of Korea Department of Physics Pukyong National UniversityBusan 48513Republic of Korea Department of Physics Hanyang UniversitySeoul 04763Republic of Korea

Universality class of wave chaos emerges in many areas of science,such as molecular dynamics,optics,and network *** this work,we generalize the wave chaos theory to cavity lattice systems by discovering the intrinsic coupling of the crystal momentum to the internal cavity *** cavity-momentum locking substitutes the role of the deformed boundary shape in the ordinary single microcavity problem,providing a new platform for the in situ study of microcavity light *** transmutation of wave chaos in periodic lattices leads to a phase space reconfiguration that induces a dynamical localization *** degenerate scar-mode spinors hybridize and non-trivially localize around regular islands in phase *** addition,we find that the momentum coupling becomes maximal at the Brillouin zone boundary,so the intercavity chaotic modes coupling and wave confinement are significantly *** work pioneers the study of intertwining wave chaos in periodic systems and provide useful applications in light dynamics control.

关键词： theory. chaos wave

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Low skeletal muscle mass is associated with non-alcoholic fatty liver disease in Korean adults： the Fifth Korea National Health and Nutrition Examination Survey

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Hepatobiliary & Pancreatic Diseases International 2016年第1期15卷 39-47页

作者： hee yeon kim chang wook kim chung-hwa park jong young choi kyungdo han anwar t merchant yong-moon park division of hepatology department of internal medicinecollege of medicinethe catholic university of korea222Banpo-daeroSeocho-guSeou1 06591Republic of Korea department of biostatistics college of medicinethe catholic university of korea222Banpo-daeroSeocho-guSeou1 06591Republic of Korea department of epidemiology and biostatistics arnold school of public healthuniversity of south carolinaColumbiaSC 29208USA epidemiology branch national institute of environmental health sciencesnational institutes of healthdepartment of health and human servicesResearch Triangle ParkNC 27709USA

BACKGROUND： Sarcopenia and non-alcoholic fatty liver dis- ease （NAFLD） share similar pathophysiological mechanisms, and the relationship between sarcopenia and NAFLD has been recently investigated. The study investigated whether low skel- etal muscle mass is differentially associated with NAFLD by gender in Korean adults. METHODS： We conducted a cross-sectional analysis of the data from the Fifth Korea National Health and Nutrition Examination Survey. The skeletal muscle index （SMI） was obtained by the appendicular skeletal muscle mass divided by the weight. NAFLD was defined as a fatty liver index （FLI）〉60 in the absence of other chronic liver disease. RESULTS： Among the included subjects, 18.3% （SE： 1.4%） in men and 7.0% （SE： 0.7%） in women were classified as having FLI-defined NAFLD. Most of the risk factors for FLI-defined NAFLD showed a significant negative correlation with the SMI in both genders. Multiple logistic regression analysis showed that low SMI was associated with FLI-defined NAFLD, inde- pendent of other metabolic and lifestyle parameters in both genders [males： odds ratio （OR）=1.35; 95% confidence inter- val （CI）： 1.17-1.54; females： OR=1.36; 95% CI： 1.18-1.55]. The magnitude of the association between FLI-defined NAFLD and low SMI was higher in middle aged to elderly males （OR-1.50; 95% CI： 1.22-1.84） than in males less than 45 years of age （OR=1.25; 95% CI： 1.02-1.52） and in premenopausal females （OR=l.50; 95% CI： 1.12-2.03） than in postmenopausal females （OR-1.36; 95% CI： 1.20-1.54）.CONCLUSIONS： Low SMI is associated with the risk of FLI- defined NAFLD independent of other well-known metabolic risk factors in both genders. This association may differ ac- cording to age group or menopausal status. Further studies are warranted to confirm this relationship.

关键词： Korea National Health and Nutrition Examination Survey non-alcoholic fatty liver disease sarcopenia skeletal muscle

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Characteristic analysis of bleeding effect on standing column well (SCW) type geothermal heat exchanger

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Journal of Central South University 2012年第11期19卷 3202-3207页

作者： CHOI Hoon-ki YOO Geun-jong LIM Kyung-bin LEE Sang-hoon LEE chang-hee Department of Mechanical Design/Manufacturing Engineering Changwon National UniversityChangwon 641-773Korea Department of Mechanical Design Engineering Hanbat National UniversityDaejon 305-719Korea Department of Energy Engineering Jeonju UniversityJeonju 560-759Korea STX Institute of Technology Gyeongnam 642-845Korea

Thermal performance is the most important factor in the development of a borehole heat exchanger utilizing geothermal *** thermal performance is affected by many different design parameters and different operating conditions such as *** eventually determines the operation and cost efficiency of the borehole heat exchanger *** thermal performance of an open standing column well (SCW) type geothermal heat exchanger was assessed under the influence of *** this,a thermal response test rig was established with line-source *** test rig also had a bleeding function by releasing fluid while taking additional underground water through the heat *** thermal response test was performed with an additional constant input heat *** thermal conductivity and thermal resistance were obtained from the measured *** the measurement,the effective thermal conductivity is found to have 1.47 times higher value when bleeding is *** thermal resistance also increases by 1.58 times compared to a non-bleeding *** trend indicates enhanced heat transfer in the SCW type heat exchanger with a bleeding ***,therefore,could be an effective method of achieving a high heat transfer rate in the SCW type heat exchanger with sufficient underground water supply.

关键词： standing column well type thermal response test effective thermal conductivity thermal resistance bleeding effect

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Thermal performance analysis of borehole size effect on geothermal heat exchanger

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Journal of Central South University 2012年第12期19卷 3524-3529页

作者： CHOI Hoon-ki YOO Geun-jong LIM Kyung-bin LEE Sang-hoon LEE chang-hee Department of Mechanical Design and Manufacturing Engineering Changwon National UniversityChangwon 641-773Korea Department of Mechanical Design Engineering Hanbat National UniversityDaejon 305-719Korea Department of Energy Engineering Jeonju UniversityJeonju 560-759Korea STX Institute of Technology Changwon 642-845Korea

Thermal performance was the most important factor in the development of borehole heat exchanger utilizing geothermal energy. The thermal performance was affected by many different design parameters, such as configuration type and borehole size of geothermal heat exchanger. These eventually determined the operation and cost efficiency of the geothermal heat exchanger system. The main purpose of this work was to assess the thermal performance of geother^nal heat exchanger with variation of borehole sizes and numbers of U-tubes inside a borehole. For this, a thermal response test rig was established with line-source theory. The thermal response test was performed with in-line variable input heat source. Effective thermal conductivity and thermal resistance were obtained from the measured data. From the measurement, the effective thermal conductivity is found to have similar values for two- pair type （4 U-tubes） and three-pair type （6 U-tubes） borehole heat exchanger systems indicating similar heat transfer ability. Meanwhile, the thermal resistance shows lower value for the three-pair type compared to the two-pair type. Measured data based resistance have lower value compared to computed result from design programs. Overall comparison finds better thermal performance for the three-pair type, however, fluctuating temperature variation indicates complex flow behavior inside the borehole and requires further study on flow characteristics.

关键词： large size borehole heat exchanger thermal response test effective thermal conductivity thermal resistance borehole

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K2Ti6O13 Nanoparticle-Loaded Porous rGO Crumples for Supercapacitors

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Nano-Micro Letters 2020年第1期12卷 115-123页

作者： Chongmin Lee Sun Kyung Kim Hankwon chang hee Dong Jang Department of Nanomaterials Science and Engineering University of Science and TechnologyYuseong‑guDaejeon 34113Republic of Korea Resources Utilization Research Center Korea Institute of Geoscience and Mineral ResourcesYuseong‑guDaejeon 34132Republic of Korea

One-dimensional alkali metal titanates containing potassium,sodium,and lithium are of great concern owing to their high ion mobility and high specific surface *** those titanates are combined with conductive materials such as graphene,carbon nanotube,and carbon nanofiber,they are able to be employed as efficient electrode materials for *** hexa-titanate(K2Ti6O13,KTO),in particular,has shown superior electrochemical properties compared to other alkali metal titanates because of their large lattice parameters induced by the large radius of potassium ***,we present porous rGO crumples(PGC)decorated with KTO nanoparticles(NPs)for application to *** KTO NP/PGC composites were synthesized by aerosol spray pyrolysis and post-heat *** NPs less than 10 nm in diameter were loaded onto PGCs ranging from 3 to 5μ*** porous structure of the composites was obtained by the activation of rGO by adding an excessive amount of KOH to the *** KTO NP/PGC composite electrodes fabricated at the GO/KOH/TiO2 ratio of 1:3:0.25 showed the highest performance(275 F g−1)in capacitance with different KOH concentrations and cycling stability(83%)after 2000 cycles at a current density of 1 A g−1.

关键词： Potassium hexa-titanate Porous graphene crumples Supercapacitors

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Velocity Profiles between Two Baffles in a Horizontal Circular Tube

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Journal of Thermal Science 2014年第6期23卷 544-551页

作者： Tae-Hyun chang Hae-Soo Lee Keon-Je Oh Doeg hee Doh chang-Hoan Lee Senior Research Fellow of RESEAT Korea Institute of Science and Information Postdoctoral Research Fellow School of Mechanical Engineering of Kyungnam University School of Mechanical Engineering Kyungnam University Division of Mechanical and Energy Systems Engineering Korea Marine and Ocean University Korea Institute of Science and Technology Information

The shell and tube heat exchanger is an essential part of a power plant for recovering heat transfer between the feed water of a boiler and the wasted *** baffles are also an important element inside the heat *** materials influence the flow pattern in the *** influence of baffles in the velocity profiles was observed using a three-dimensional particle image velocimetry around baffles in a horizontal circular *** velocity of the particles was measured before the baffle and between them in the test *** show that the flows near the front baffle flow were parallel to the vertical wall,and then concentrate on the upper opening of the front *** flows circulate in the front and rear *** flow profiles are related to the Reynolds number(Re) or the flow *** velocity profiles at lower Re number showed a complicated mixing,concentrating on the lower opening of the rear baffle as front *** flow was employed in this study,which was produced using tangential velocities at the *** the entrance of the front baffle,the velocity vector profiles with swirl were much different from that without ***,velocities between two baffles are not much different from those without swirl.

关键词： Baffle Shell and tube Tangential inlet Swirl Particle image velocimetry

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