척추분리증이 동반된 요추 추간판 탈출증

신병준,김광섭,윤태경,이재철,김경제,김연일 대한척추외과학회 2001 대한척추외과학회지 Vol.8 No.1

연구계획 : 척추분리증이 동반되어 있는 추간판탈출증의 수술적 치료에 관한 후 후향적 연구이다. 연구목적 : 본 연구의 목적은 추간판탈출증 환자 중 척추분리증이 동반되어 있는 빈도를 알아보고, 추간판탈출증을 단순히 수핵제거술 만으로 치료한 경우에 단순한 추간판탈출증의 치료에 비하여 예후에 차이가 있는지를 비교하고자 하였다. 대상 및 방법 : 1989년 3월부터 1999년 2월까지 수핵제거술을 시행받은 환자 273명 중 척추분리증이 있으나, 척추불안정이 없고, 1년 이상 추시 관찰이 가능하였던 9명을 대상으로 하였다. 남자가 5명, 여자가 4명이었고, 평균 연령은 42.7세(30세 64세)였고, 평균 추시 기간은 54.6개월(15개월 114개월)이었다. 추간판탈출의 형태, 척추분리증이 있는 부위 등을 조사하였고 환자들의 이환 기간, 증상의 정도 및 양상, 신경학적 소견 등을 술 전 및 추시 시의 결과를 Kim등의 평가기준에 따라 평가하였다. 결과 : 척추분리증이 동반된 추간판탈출증의 비율은 3.7%로 나타났다. 임상적 증상을 보면 동통은 7례(78%)에서 양성이었는데, visual analogue scale에 의한 통증평가의 평균은 술전 2.1(0 8), 최종 2.1(0 5)이었고, 방사등 9례(100%)모두에서 나타났으며 통증평가의 평균은 술전 7.6(4 10)에서 최종 0.8(0 3)로 호전되었다. 하지 직거상 검사상 7례(78%)에서 양성 소견을 보였고 7명 모두에서 증상의 호전이 있었다. 근력의 약화는 6례(67%)에서 관찰되었는데 6례모두 증상의 호전이 있었다. 감각의 저하는 8례(89%)에서 나타났으며 ?M 우 7례는 증상의 호전을 보였다. 심부 건반사의 이상은 5례(56%)에서나타났으며 2례에서 증상의 호전을 보였다. 임상적 결과는 탁월 2명, 우수 6명, 양호가 1명이었다 결론 : 추간판탈출증에서 척추분리증이 동반된 비율은 3.7%로 일반적인 척추분리증의 빈도와 큰 차이는 없었다. 술후 임상증상의 회복율이나 동통지수의 변화를 볼 때 척추분리증이 동반된 추간판탈출증환자들의 수술결과도 일반적으로 추간판탈출증만이 있는 환자를 치료한 결과와 큰 차이가 없는 것으로 보아 척추분리증이 동반되었다고 하여 척추고정술을 고려하는 등 추간판탈출증 자체의 수술방법을 변경할 필요는 없다고 판단된다. Study Design : This is a retrospective study determining the surgical result of lumbar HlVD associated with spondylolysis. Objectives : To analyze the incidence of lumbar HlVD associated with spondylolysis and to compare the results of open discectomy for lumbar HlVD associated with spondylolysis to simple lumbar HlVD. Summary of Literature Review : Lumbar HlVD associated with spondylolysis need be treated by spinal fusion. Materials and Methods : Nine patients(5 males and 4 females) who had lumbar HlVD with spondylolysis, no instability. follow-up period of 1yr were identified out of 273 patients with lumbar HlVD, treated by open discectomy from March 1989 to Feb. 1999. The type of HlVD and level of spondylolysis were evaluated, the clinical symptoms and signs including SLR. motor deficit, sensory deficit, change of DTR and severity of radiating pain were periodically followed up on the predesigned protocoL Results : The incidence of lumbar HlVD associated with spondylolysis is 3.7%. The recovery of back pain was 2.1 to 2.1 by visual analogue scale, radiating pain was 7.6 to 0.8. The recovery rate of SLR was 100%, motor deficit; 100%. sensory deficit: 85%, change of DTR 4O%. The clinical evaluation was excellent(2), good(6). fair(1). Conclusions : According to the recovery rate of the clinical symptoms, the results of open discectomy for lumbar HlVD associated with spondylolysis without spinal instability and simple HIVD was not different. Therefore, we conclude that lumbar HlVD associated with spondylolysis need not be treated by spinal fusion.

계절창고 속에 포장 저장된 과일의 호흡 예측 모델

김광섭,심승우,나현정,조인철,정흥조,박찬영 전남대학교 촉매연구소 2001 觸媒硏究 論文集 Vol.22 No.-

Fruit are normally kept in a pouch of cold storage room in winter. In this work, a mathematical model that is emulating the fruit respiration in the pouch of the storage has been established. The calculated result is compared to the actual measured gaseous composition change of pear in the packaging pouch LDPE film incorporated with silver coated ceramic powder. The presented model, that is combining polysaccharide digestion kinetics in pear, Fickian diffusion for permeation of the film and sigmoidal adsorption equilibrium between the film and gases, predicts the respiration of the pear in the packing film fairly well.

High $f_T$ 30nm Triple-Gate $In_{0.7}GaAs$ HEMTs with Damage-Free $SiO_2/SiN_x$ Sidewall Process and BCB Planarization

Kim, Dae-Hyun,Yeon, Seong-Jin,Song, Saegn-Sub,Lee, Jae-Hak,Seo, Kwang-Seok The Institute of Electronics and Information Engin 2004 Journal of semiconductor technology and science Vol.4 No.2

A 30 nm $In_{0.7}GaAs$ High Electron Mobility Transistor (HEMT) with triple-gate has been successfully fabricated using the $SiO_2/SiN_x$ sidewall process and BCB planarization. The sidewall gate process was used to obtain finer lines, and the width of the initial line could be lessened to half by this process. To fill the Schottky metal effectively to a narrow gate line after applying the developed sidewall process, the sputtered tungsten (W) metal was utilized instead of conventional e-beam evaporated metal. To reduce the parasitic capacitance through dielectric layers and the gate metal resistance ($R_g$), the etchedback BCB with a low dielectric constant was used as the supporting layer of a wide gate head, which also offered extremely low Rg of 1.7 Ohm for a total gate width ($W_g$) of 2x100m. The fabricated 30nm $In_{0.7}GaAs$ HEMTs showed $V_{th}$of -0.4V, $G_{m,max}$ of 1.7S/mm, and $f_T$ of 421GHz. These results indicate that InGaAs nano-HEMT with excellent device performance could be successfully fabricated through a reproducible and damage-free sidewall process without the aid of state-of-the-art lithography equipment. We also believe that the developed process will be directly applicable to the fabrication of deep sub-50nm InGaAs HEMTs if the initial line length can be reduced to below 50nm order.

下顎骨 後方 堅引力이 家兎 顎骨 成長에 미치는 影響에 관한 實驗的 硏究

김종철,양규호,이광섭 대한치과교정학회 1993 대한치과교정학회지 Vol.23 No.3

The purpose of this study was to investigate the effect of jaw growth in a growing rabbits, when they are subjected to retractive force and after removal of retractive force. The experimental animals were Oryctolagus couniculus, male rabbits of 4 weeks of age. The mandible is retracted with 200gm in force of each side to the posterior and superior direction for 14 hours a day. Then rabbits were used as control group. First experimental group received retractive force for 4 weeks. Second experimental group received for 8 weeks. Third experimental group received for 12 weeks. True lateral films and dorso-ventral films were taken before wearing apppiances, 4 weeks, 8 weeks, 12 weeks and 16 weeks after wearing appliance. The changes of rabbits jaw growth were observed radiographically. The findings were as follows : 1. Mandibular retractive force decreased total mandibular length, mandibular condylar length and angular length. 2. Mandibular retractive force increased nasal height, condylar width and angular width. 3. Mandibular retractive force decreased mandibular lenght growth but increased mandibular width growth. 4. There is no phenomena of catch-up growth after retractive force removal.

주거형태에 따른 일반인의 환경의식 행태에 관한 연구

윤오섭,김광환 大田産業大學校 2000 한밭대학교 논문집 Vol.17 No.1

The result of the study and analysis on the formation and the mutual relation of environmental consciousness followed by residential forms are as bellows; The ratios of the subjects of this study for each gender are ; 68.1% of male and 31.9% of female. And the group of aged thirty to thirty-nine occupied 33.2% as the majority. Each residential group comes up to 65.0% of using washstand when they wash their faces and hands. While being in the kitchen, 55% of individual housing residents and 61.8% of tenement housing residents are using basins, and the ratios are occupied very highly. 52.5% of discharged water which is accrued from the rice-wash is used for flower gardens and dish washing, and the ratio of direct discharging the water comes up to a very high ratio regardless the residential forms. 33.2% of the subjects of this study do car washes, and the residents living in the tenement housings and apartments do more car washes than the residents living in the individual housings do. 51% of the subjects or this study do warm-ups of the automobiles and apartment residents highly grasp the warm-up ratio while individual housing residents showed lesser warm-ups. 57.2% of the subjects of this say, they do not know well about the greenhouse gas and the tenement residents occupied high ratio. 10% of individual housing residents do not recycle garbage and this group grasps the highest rate. 57.6% of the entire subjects of this study do separate discharge of the rubbish but 61.8% of the individual residents do not separate discharge.

중장년층에서의 외상성 견관절 탈구

이광원,류창수,김하용,안재훈,염진섭,김환정,최원식 대한견.주관절학회 2000 大韓肩.주關節學會誌 Vol.3 No.2

賂物의 職務關聯性

朴光燮,金容世 忠南大學校 法學硏究所 1995 法學硏究 Vol.6 No.1

韓國社會에 있어서 貧困問題硏究의 成果와 課題

崔日燮,金光億 서울대학교 사회과학연구소 1982 社會科學과政策硏究 Vol.4 No.2

道路交通事故에 대한 刑事制裁

朴光燮,金容世 忠南大學校 法學硏究所 1994 法學硏究 Vol.5 No.1

졸겔법에 의한 LiCoO₂의 구조와 전기화학적 특성에 관한 연구

윤원섭,김광범 연세대학교 산업기술연구소 1999 논문집 Vol.31 No.1

LiCoO₂ powders were prepared by a sol-gel method using a chelating agent for Li-ion batteries and their electrochemical properties have been investigated. Acrylic acid has been adopted as a chelating agent in this study, which resulted in HT- LiCoO₂cathod materials with excellent reversibility and crystallinity. The LiCoO₂ compounds were annealed at 500℃-900℃ for 10 h after preheating at 450℃ for 1 h, in air and their structural and electrochemical properties were systematically investigated by XRD, Extended X-ray Absorption Fine Structure (EXAFS), Electochemical Voltage Spectroscopy (EVS), Cyclic Voltammetry (CV), and galvanostatic charge/discharge experiments.