화학적 요부 교감신경절 차단에서 한 분절 차단과 두 분절 차단의 비교

김종일,이규종,이상곤,민병우,반종석,문철준 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.41 No.4

Chemical Lumbar Sympathetic Block: Comparison of One- Versus Two-needle Techniques Chul-Jun Mun, M.D., Kyu-Jong Lee, M.D., Sang-Gon Lee, M.D., Jong-Il Kim, M.D.^* Jong-Suk Ban, M.D., and Byung-Woo Min, M.D. Department of Anesthesiology, Fatima Hospital, Daegu, Korea ^*Kim Jong Il Pain Clinic, Daegu, Korea Background: It was frequently noticed in the course of performing a two-needle sympathectomy, that satisfactory spread of contrast solution could be produced by injection through only one of the needles. This led to a closer examination of the merits of single-needle technique. Methods: Forty patients were randomized into two groups. Patients in the single-needle group (n = 20) were injected at the second or third lumbar sympathetic ganglia, while patients in the two-needle group (n = 20) were injected at the second and thired lumbar sympathetic ganglia. Lumbar sympathetic blocks were performed using 3 ml of alcohol and the spread of injectate was verified with C-arm fluoroscopy. The indicators of a successful sympathetic block are increasing skin temperature, decreasing pain, and anhidrosis in the distal extremity. Results: The duration of anhidrosis was 12.2 ?? 2.6 months (mean ?? SD) in the single-needle group versus 13.6 ?? 3.6 months (mean << SD) in the two-needle group. Conclusions: As these results were not significantly different from those obtained in patients having considered to be effective for a neurolytic ;i,bar sympathectomy. (korean J Anesthesiol 2001; 41: 439~443)

老齡者의 建康을 위한 生活習慣 實態調査

申東敏,長鳳愚,李揆文,金賢俊,金昌範,崔宗洙,崔鍾晥,李鍾珏,金圭碩,趙庚旭,金鍾聲,朴鍾振 平生體育硏究所 論文集 1987 平生體育硏究所 論文集 Vol.2 No.-

With a view to examining the habit and method in which old people maintain and improve their health, we consulted 551 men and 444 women who were over 65 years old, and concluded as follows: 1. Habit of eating It's been revealed that most of the old people keep a regular eating hour, control the quantity of meal or eat a little food, and prefer vegetables to meat. 2. Mental health Old people feel the necessity for mental health and most of them (about 80%) keep good mental health without becoming pessimistic. Their chief concenrs have turned out to be about their sons and daughters and their own health and finance. 3. Managing Good Health It has been revelaed that old people do not possess any special kind of secret to keep good health but taking plenty of rest, regular meal, and proper exercise, and many of them (about 60%) have been shown to eat invigorant food that they can easily get around their living area. 4. Physical Functions It has been revealed that many old people are conscious of some symptoms about their parts of body and about to percent of them suffers from neuralgia. Some measures like medical aid especially for old people need to be taken as soon as possible. As we have found that the health-keeping method of old people consists plenty of rest, proper exercise, and appropriate nutrition, we can conclude that the recreatonal and culture facilities and programs for keeping old people in good health should be developed. It is also necessary to study food that contribute to their health and develop ways to get rid of the stresses to which they are exposed in their daily life. Presides, it is natural that government found an administrative department to deal with these matters effectively.

한국 정신장애의 역학 조사 연구[I] : 각 정신장애의 유병률

조맹제,함봉진,김장규,박강규,정은기,서동우,김선욱,조성진,이준영,홍진표,최용성,박종익,이동우,이기철,배재남,신정호,정인원,박종한,배안,이충경 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.4

Objectives : This study aims to estimate the prevalence of the DSM-IV psychiatric disorders in Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI). Methods : Subjects were selected by taking multi-stage, cluster samples of 7,867 adult household residents, 18 to 64 years of age, in ten catchment areas. Total 78 trained interviewers administered the K-CIDI to the selected respondents, from June 1 to November30,2001. Results : Total 6,275 respondents completed the interview. Some 33.5% of respondents reported at least one lifetime disorder, 20.6% reported at least one-year disorder, and 16.7% reported at least one-month disorder. The most common lifetime disorders were alcohol abuse/dependence (17.24%), nicotine dependence/withdrawal (11.19%), specific phobia (5.16%), and major de-pressive disorder (4.25%). The lifetime prevalence of substance abuse/dependence (0.25%) and schizophrenia (0.16%) was very low. Nicotine and alcohol use disorder showed very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among female than male. Conclusion : The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in distributions of psychiatric disorders across the areas and times were observed.

시상출혈 환자의 지연 순목반사

박종무,김호진,윤창호,이용석,노재규,이광우 대한신경과학회 1999 대한신경과학회지 Vol.17 No.5

GIS를 이용한 伐採制限地 選定에 관한 硏究

禹鍾春,崔朝龍,元賢圭 강원대학교 삼림과학연구소 2000 Journal of Forest Science Vol.16 No.-

본 연구는 GIS를 이용하여 산림경영을 위한 의사결정을 지원할 수 있는 방안을 연구하였다. 그리고 임목의 벌채로 인한 수질오염문제, 토사유출문제를 해결하기 위하여 우선 입목을 벌채를 실시할 경우, 벌채 금지구역을 선정하였다. 강원대학교 연습림 지역에 대한 벌채계획 수립 시, 벌채로 인한 여러 가지 위험요소들이 발생하므로 벌채제한지의 선정은 매우 중요한 일이다. 따라서 본 연구에서는 이용된 GIS 분석방법으로는 Arc/Info 7.1의 기능 중에 하나인 버퍼링(Buffering)기능과 중첩기능(Overlay)를 이용하여 분석을 실시하였다. 연구결과, 전체 249.82ha에서 52.64ha가 벌채제한지로 나타났고, 수종별로 살펴보면 활엽수가 13.21ha, 잣나무 26.44ha, 낙엽송 12.38ha, 소나무 0.61ha이었다. 잣나무가 26.44ha로 가장 많은 지역에서 벌채제한지로 나타났다. This paper studies the methods to support decision making for forest management Using GIS. Specially, most important is selecting restrict area to timber harvest suitable on scheduling its harvest in experimental forest of kangwon national university. Because timber harvesting causes water pollution, land sliding and soil erosion, it is necessary to restrict area to be harvest. The study is analyzed with Buffering modules and overlay modules which are an function of Arcinfo 7.1. As a result, restricted area is 52.64ha in total area. Of which Hardwood stand 13.21ha, pinus Pinus koraiensis stand 26.44ha, Larix leptolepis stand 12.38ha and Pinus rigida stand 0.61ha. Key words : timber harvesting, harvesting restriction, GIS

다공질규소 microcavity의 페브리-페로 필터 특성

이춘우,박대규,홍사용,김영유,전종현 公州大學校 基礎科學硏究所 1999 自然科學硏究 Vol.8 No.-

p형 단결정규소 웨이퍼를 15% HF-에탄올 용액에서 양극 산화시켜 다공질규소를 얻는 과정에서 전류밀도에 따라 굴절률이 변하는 다층의 다공질규소층(porous silicon multilayer)을 구현하였다. 그리고 다층의 다공질규소층(I), 다공질규소 발광층, 또 다른 다층의 다공질규소층(II)의 순으로 구성된 porous silicon microcavity(PSM)를 제작하고 그 물성을 조사하였다. PSM 상하에 위치한 다층의 다공질규소층의 단면을 AFM(Atomic Force Microscope)으로 조사한 결과 고굴절률과 저굴절률이 주기적으로 교차하는 층이 균일하게 형성되었으며, 중앙의 다공질규소 발광층도 균일하게 나타났다. 다층의 다공질규소층 및 다공질규소 발광층의 두께를 각각 실효파장의 1/4배 및 2배가 되도록 하였을 때 특정파장의 필터로 쓰일 수 있는 페브리-페로 간섭 필터(Fabry-Perot interference filter)의 특성이 나타났다. 또한 PSM의 발광 스펙트럼은 그 반치폭이 현저히 감소하고 발광의 세기가 크게 증가되는 경향을 보였다. 또한 발광파장을 600 nm로 조절하여 PSM을 구현하고 발광 특성을 관찰한 결과 600 nm 부근에서도 같은 현상이 일어나 발광의 최대 봉우리 파장값을 이동시킬 수 있는 필터로서의 역할이 가능함을 보였다. In the process of obtaining porous silicon by anodizing p-type doped crystalline silicon wafer in 15 % HF-ethanol solution, we obtained porous silicon multilayers which had periodically varying refractive index by the current density. We fabricated the porous silicon microcavity(PSM) which consist of porous silicon multilayers(I), active layer of porous silicon and porous silicon multilayers(II) and investigated its physical properties. The AFM(Atomic Force Microscope) measurement from the cross section of multilayers I and II) shows uniformity of high refractive index and low index layers as well as the active layer. We observed the characteristics of Fabry-Perot interference filter when the thickness of layers was 1/4 and the thickness of active layer was twice of the effective wavelength, which can be used as a filter for specific wavelength. We found the emission characteristic from the PSM, which FWHM(Full Width Half Maximum) was considerably decreased and emission intensity was increased. And as a result of fabricating PSM which consisted of 600 nm in the light emission wavelength and observing the light emission properties, We found out that there was the same phenomenon in 600 nm wavelength and PSM could act as a filter which could shift the maximum of the emitted light.

기구학적 불완전성을 갖는 구륜이동로보트의 기구학적 보정과 방향각 오차의 감소를 위한 속도 궤적의 설계

문종우,김원규,박종국 慶熙大學校 材料科學技術硏究所 1998 材料科學技術硏究論集 Vol.11 No.-

This paper presents the kinematic correction method for wheeled-mobile robots with 2 d.o.f. and a design of the velocity trajectory for wheeled-mobile robots'line-travelling. We derive the relative wheel-weight and the absolute wheel-weight to correct the radius of both wheels. And we use the curvature angle to correct displacement of wheel base. We show that wheeled-mobile robots can't move along a straight-line perfectly and the velocity trajectory must have the chage of velocity at least one. To prove efficiency of the method in this paper, we experiment on the wheeled-mobile robots with 2 d.o.f. and discuss the results.

치료 전ㆍ후 정신분열증 환자의 청각 사건관련 전위 P300의 지표학적 뇌영상

방승규,김종우 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.2

저자들은 대조군과 정신분열증 환자 26명을 대상으로 지표학적 뇌전위 영상화 기법을 이용하여 청각 사건관련전위 P300의 인지 장애에 대한 치료후의 변화를 관찰한 다음, 지표학적 뇌영상을 이용하여 P300과 연관이 있는 뇌의 위치를 확인함으로써 다음과 같은 결과를 얻었다. 1) 정신분열증군의 치료 전후 P300의 파형은 inverted-U 형태로 대조군의 inverted-V 형태와 서로 달랐다. 정신분열증 환자군에서 치료 4주 후 P300 잠복기는 대조군과 유의한 차이를 보여주지 않았으나, 치료 전 P300 잠복기는 대조군보다 더 길었다. 전극 각 부위에서의 P300 전위는 정신분열증군과 대조군 모두에서 정중 두정부(Pz)에서 가장 높았다. 2) 치료 전 정신분열증군과 대조군 사이의 전위 차이를 각 전극 부위별로 비교한 결과 좌측 중앙부(C₃), 정중 중앙부(Cz), 우측 중앙부(C₄), 좌측 두정부(P₃), 정중 두정부(Pz), 우측 두정부(P₄)(P<0.01)와 좌측 측두부(T₃)에 서 유의한 차이가 있었다. 3) 치료 4주 후의 정신분열증군과 대조군 사이의 전위를 각 전극 부위별로 비교한 결과 정중 두정부(Pz), 우측 두정부(P₄)(P<0.01)와 정중 중앙부(Cz), 우측 중앙부(C₄), 좌측 두정부(P₃)에서 유의한 차이가 있었다. 4) 치료 전 정신분열증군과 치료 주 후 정신분열증군 사이의 전위를 각 전극 부위별로 비교한 결과 정중 중앙부(Cz), 좌측 측두부(T₃), 정중 두정부(Pz)에서 유의한 차이를 보였으나 치료 전에 약물을 복용한 환자군과 약물 복용하지 않은 군 사이에는 유의한 차이가 없었다. 5) BPRS의 경우 치료전에 비해 치료후에 현저히 감소 되었다. 이상의 결과로 미루어 정신분열증 환자가 정보를 처리하는데 인지적 결함이 있으며 치료 후 부분적인 회복을 보이나 장애가 지속됨을 관찰하였다. schizophrenia is a chronic, debilitating major mental illness which neural correlates remain unknown, Recently, the topographic brain maping of P300 has been applied to examine the psychophysiological disturbance in schizophrenics, particulary with regard to the topographic distribution of P300. The most robust and consistently replicated electrophysiological abnormalities in schizophrenics involve the auditory P300 event related potential(ERP), a positive potential that begins approximately 300 msec following a target stimulus that is novel and task-relevant. Reduction in amplitude of auditory P300 ERP has been related to cognitive deficits, brain structure abnormalities, chemical abnormalities, and clinical status. Auditory P300 ERP has been extensively examined in psychiatric research, and many investigators have saught their psychophysiological meanings and clinical significances since the recording procedure of P300 was standardized. On the basis of these aspects, this study was designed to evaluate not only the shape, latency and amplitude of P300, but also the topographic distribution in schizophrenics before and after antipsychotic treatment and to examine the availability of the characteristic findings of P300 mapping as one of the biological markers. The subjects sere consisted of 26 schizophrenics who had been admitted to Kangnam St. Mary's Hospital and Our Lady of Mercy Hospital, Catholic University Medical College from February, 1993 to September, 1994. The results were as follows ; 1) Shape of P300 in schizophrenics before and after treatment was inverted U type, but that of controls was invented V type. Latency of P300 in schizophrenics before treatment was 354 msec, which was more prolonged than in controls(331 msec). Latency of P300 in schizophrenics after treatment was 339 msec, which was not significantly different with controls(331 msec). 2) There were significant differences of topographic amplitudes of P300 between schizophrenics before treatment and controls in the mid-centroparietal, left and right centroparietal, left temporal areas. 3) There were significant differences of topographic amplitudes of P300 between schizophrenics after treatment and controls in the mid-centroparietal, right central, left and right parietal areas. Differences of latencies between schizophrenics before and after treatment were not significant. 4) There were significant differences of topographic amplitudes of P300 between schizophrenics before and after treatment in the mid-central, mid-parietal and left temporal areas. 5) The score of brief psychiatric rating scale(BPRS) in schizophrenics before treatment was 44.86±10.51, after treatment was 34.18±8.62 respectively. There were significant differences between them. The finding of minimal change in auditory P300 amplitude in mid-central, mid-parietal, right central, left and right parietal areas were not affected by treatment. Therefore, it was suggested that reduced P300 amplitude of schizophrenics before treatment in mid-centroparietal and left temporal were affected by treatment.

풍화에 따른 퇴적암의 강도 변화

배우석,이봉직,오세욱,이종규 한국산업안전학회 2003 한국안전학회지 Vol.18 No.1

The failure of rock slopes were influenced by weathering, which causes change in the shear strength. The weathering is also directly related to slaking and swelling characteristics. In the paper, the core of diameter 10㎝ was obtained by digging on rock slope of Kong-ju in Korea and the EDX (Energy Dispersive X-ray spectrometer) analysis was carried out to verified element of chief rock-forming minerals. Uniaxial compression tests, slaking tests, and point load test are performed to study engineering characteristics of conglomerate and red shale. As a results of slaking test, slaking index of conglomerate indicate range of 85.11-99.58 and shale indicate 58.37-99.23.Therefore, it is recognized that the resistance of shale to weathering decreases in shallow depth and it greatly influences the strength of rock. The result of uniaxial compression test and point load test show that the strength of sedimentary such as conglomerate and red shale has an influence on both weathering and saturation.

구륜이동로보트의 기구학적 보정과 모터 제어기의 가속도 해상도를 고려한 속도 궤적의 설계

문종우,김원규,박종국 慶熙大學校 1998 論文集 Vol.27 No.-

This paper presents the kinematic correction method for wheeled-mobile robots with 2 d.o.f. and a design of the velocity trajectory for wheeled-mobile wheel-weight to correct the radios of both wheels. And we use the curvature angle to correct displacement of wheel base. We show that wheeled-mobile robots can't move along the straight-line perfectly and prove that it is attributed to the acceleration constraint of motor controllers and the velocity trajectory have to get a change of velocity in order that wheeled-mobile robots may converge to the straight line. And we experiment on the wheeled-mobile robots with 2 d.o.f. and discuss results.