40세 이하 관상동맥 질환자에서 장기적 임상 관찰

이승욱,정명호,박종철,박형욱,조상희,김원,김계훈,이상현,강경태,조장현,김남호,김건형,안영근,조정관,박종춘,강정채 全南大醫大 2001 전남의대학술지 Vol.37 No.2

腦硬塞患者의 血壓·脈搏 및 腦血流에 대하여 水溝-承漿穴 電鍼刺戟이 미치는 影響

박성욱,문상관,고창남,조기호,김영석,배형섭,이경섭 경희대학교 1997 慶熙醫學 Vol.13 No.4

반치환술후 탈구 도수정복시 Bipolar shell의 분리-1례 보고

서유성,이경한,나수균,최창욱 순천향의학연구소 1995 Journal of Soonchunhyang Medical Science Vol.1 No.1

The disassembly of modular total hip prosthesis in the postoperative period has been reported with increasing frequency. This involves disassembly of modular acetabular cups, modular head - neck systems and bipolar systems. Disassembly of the components of bipolar endoprosthesis of the Bateman and Christiansen designs have been reported previously. We report on an unusual case of a patient in whom a modular, taper - locked femoral head seperated from the shell ; the seperation occurred during an attempt at closed reduction of a hip that had dislocated posteriorly.

복압성요실금(Stress urinary incontinence)과 절박성요실금(Urge incontinence)환자에서 TVT 수술 결과의 비교

이경구,이준호,권용욱,정태융,심희영,이상익 관동대학교 의과대학 의과학연구소 2005 關東醫大學術誌 Vol.9 No.1

Tension-free vaginal tape(TVT) has been widely used in the management of stress urinary incontinence(SUI), and has been applied to urge incontinence (UI). We evaluated and compared the outcomes between SUI and UI for patients who had undergone TVT. Patients were categorized into SUI(33 patients) and UI(26 patients). Before treatment, we asked about LUTSs using female bladder questionnaire. And we asked about sexual function. After treatment, the same questionnaires were repeated. During the postperative period, the objective and subjective success rate were evaluated. For operation outcome results, in SUI group there were 29 cases of cure (87.9%)and 2 of improvement(6.1%), and in UI group there were 20 cases of cure(76.9%)and 3 of improvement(11.5%) (p>0.05). The operation satisfaction rate of patients was 90.9% in SUI group and 84.6% in UI group(p>0.05). Improvement of sexual satisfaction occurred in 6(20.0%) of SUI group, and 3 (18.8%) of UI group, respectively(p>0.05). The objective success rate, satisfaction rate and sexual satisfaction of SUI patients did not significantly differ from the women with UI. Also, these results shows that TVT procedure improves some LUTSs in both groups. We consider the TVT procedure to be an effective treatment not for stress urinary incontinence but also urge incontinenece.

컴퓨터 그래픽에서의 효율적인 2차원 직선클리핑 알고리즘

禹相旭,趙源敬 慶熙大學校 1990 論文集 Vol.19 No.-

This paper proposes a development algorithm for clipping a line in two dimensions against a rectangular window. This algorithm avoids computation of intersection points which are not end point of the output line segment. In order to compare performance with previous algorithm, this paper is compared with number of arithmetic operations needed for clipping in all conditions which can be occurred. As a result of comparing it was proved that proposed algorithm is more efficient than CS and TR chipping algorithm in same conditions.

근로자의 화학물질 노출관련 기록 보존에 관한 연구

오상민 ( Sang Min Oh ),박동욱 ( Dong Uk Park ),유성재 ( Seoung Jae Yu ),정진우 ( Jin Woo Jung ),임경택 ( Kyung Taek Lim ),이재환 ( Jae Hwan Lee ),하권철 ( Kwon Chul Ha ) 한국산업위생학회 2013 한국산업보건학회지 Vol.23 No.4

Objectives: Employee exposure record refers to a record containing information about environmental(workplace) monitoring or measuring of a toxic substance or harmful physical agent. The aims of this study were to examine problems related to exposure records and provide some amendments to the Korean Industrial Safety & Health Act for the effective management of chemical substances under the law. Methods: This study performed a literature search and review on legal provisions related to exposure records of a number of different countries, including Korea, the USA, Japan, EU, Germany, and the UK. They were compared and investigated and the amendment of articles was suggested. Results: The results of this study were provided as suggested amendments to the related act. There were a variety of ways of improvement, including a 30-year retention period and the introduction of new access methods, contents, transfer, and maintenance methods. All exposure data elements have to be standardized, including reference to a similar exposure group(SEG), sampling strategy, and circumstances of exposure(e.g., date, shift length, use of personal protective equipment, etc.). The SEGs are described by process, job, task, and environmental agent. Conclusions: This study is expected to provide for the amendment of the related act in order to ensure effective management of exposure records and is helpful for solving the cause and result of occupational disease by keeping exposure records according to the Industrial Safety & Health Act.

근무력 증후군(Lambert-Eaton Myasthenic syndrome) 1례

어경윤,이재욱,전상신,이영헌 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

근무력 증후군은 운동 초기에 근력 약화를 보이고 최대 수의 운동 후 일시적인 근력 회복을 보이고 주로 상지보다는 하지의 근위부 근력 약화, 심부건반사 감소, 자율신경장애 등을 특징으로 하는 질환이다. 그 기전은 현재 자가 면역증에 의해 신경근 접합부에서 신경종단부 acetylcholine이 원활히 유리되지 않기 때문으로 설명하고 있다. 진단은 주로 임상 양상과 신경 생리학적 검사를 통하여 이루어지며 반복신경자극검사상 빠른(10㎐ 이상)반복 자극에서 증가 반응, 느린(3~7㎐) 반복 자극에서 감소 반응을 보인다. 이 질환은 악성 종양과 동반되는 빈도가 높으며, 종양이 발견되기 전에 특징적인 근력약화증이 선행하는 경향이 있으므로 임상적 의의가 있다 하겠다. 저자들은 최근에 하지 무력감을 주소로 내원하여 소세포폐암을 동반한 근무력 증후군으로 진단된 1례를 경험하였기에 문헌 고찰과 함께 보고하고자 한다. The Lambert-Eaton Myathenic syndome is an autoimmune disease of acetycholine release defect at the level of peripheral neuromuscular synapse, and characterize the proximal muscle weakness, decresed deep tendon reflexes and autonomic nerve dysfunction. The diagnosis is performed with clinical symptoms and the reults of repetitive nerve stimulation which is consists of the incremental response at high rate(above 10Hz) stimulation and decremental response at the low rate(3-7Hz). This disease has a clinical significance that a specific muscle weekness pattern preceds the discovering underlying malignancy. We report a case of Lambert-Eaton myasthenic syndrome combined small cell carcinoma of the lung through the repetitive nerve stimulation test.

2次元 水理實驗에 의한 트렌치背後의 不規則 波高分布에 관한 硏究

박상길,강경욱,김가야 釜山大學校生産技術硏究所 1999 生産技術硏究所論文集 Vol.57 No.-

본 연구에는 해안의 사빈유실대책의 전단계로서 해안선에 도달되는 고파랑의 에너지를 감쇠시키기 위해 자연사빈에 인위적으로 트렌치를 설치하여 2차원 수리실험을 통하여 트렌치를 통과하는 파랑의 변화를 조사하였다. 트렌치를 통과하는 파랑에 영향을 미치는 요소는 내습파고, 내습파 주기, 트렌치의 상부수심, 준설깊이, 트렌치 사면경사 등을 들수 있다. 본 실험에서는 이들 매개변수를 이용하여 파랑의 전달율은 감소하는 경향을 가진다는 것을 알 수 있었다. 트렌치 길이에 대한 전달율 측정결과, 트렌치 길이가 길수록 전달율이 적게 나타났다. In this study, as a pre-step of shoreline protection, wave energy dissipation over trench is discussed by 2 dimensional experiment. Parameters for hydraulic experiment are wave height, period, depth, dredging depth, side slope to pass trench and trench width. When side slope of trench is more steep, wave steepness is larger and trench width is longer, then transmission ratio of waves become smaller

Calcitonin Gene Related Peptide에 의한 치수미세순환 조절

김성교,,김영경,진명욱 大韓齒科保存學會 2005 Restorative Dentistry & Endodontics Vol.30 No.6

본 연구에서는 감각성 neuropeptide인 CGRP의 치수혈류 조절에 관해 교감신경과의 유기적 관계를 연구함으로써 CGRP의 치수혈류 조절기전을 밝히고자 하였다. 열두 마리의 전신마취된 고양이에서 실험하였으며 CGRP를 혈관을 통해 전신적 또는 국소적으로 투여하였다. 견치에서 치수혈류의 변화를 측정하고 paired t-test로 통계분석 하였으며 95% 수준에서 유의성을 검증하였다. CGRP (0.3㎍/㎏)를 전신정맥으로 주사시, 전신혈압에 현저한 영향을 나타내면서 치수혈류는 평균 68.85%의 일차적인 증가와 감소를 보였고 이차적으로 다시 평균 161.8% 증가하였다가 감소하였다. CGRP를 저용량 (0.3㎍/㎏)으로 국소적으로 투여시, 치수혈류는 평균 2.92%의 미약한 증가를 나타내었다. 교감신경을 전기자극시 (10 Hz, 4 V, 1.5 ms), 전신혈압은 영향을 받지 않으면서 치수혈류가 유의하게 평균57.88% 감소하였다. 교감신경 자극으로 치수혈류가 저하되어 있는 동안 주입한 CGRP는 저하된 치수혈류를 유의하게 회복시켰다. CGRP의 이 치수혈류 증가 효과는 CGRP_(8-37)에 의해 효과적으로 차단되었다. The purpose of this study was to investigate the function of calcitonin gene-related peptide (CGRP) in regulatory mechanism of pulpal microcirculation with the aim of elucidating neurogenic inflammation. Experiments were performed on twelve cats under general anesthesia. CGRP was administered through the femoral vein to see the systemic influence and through the external carotid artery to see the local effect. Sympathetic nerve to the dental pulp was stimulated electrically and pulpal blood flow (PBF) was measured with a laser Doppler flowmeter on the canine teeth to the drug administration. The paired variables of control and experimental data were compared by paired t-test and differences with p < 0.05 were considered statistically significant. Systemic administration of CGRP (0.3 ㎍/㎏) exerted decreases in systemic blood pressure and caused changes in PBF with an initial increase followed by decrease and a more marked second increase and decrease. Close intra-arterial (i.a.) injection of CGRP (0.03 ㎍/㎏) resulted in slight PBF increase. The effect of CGRP resulted in no significant increase in PBF in the presence of CGRP. The electrical stimulation of the sympathetic nerve alone resulted in PBF decreases. The i.a. administration of CGRP following the electrical stimulation of the sympathetic nerve compensated the decreased PBF. Therefore, CGRP effectively blocked the sympathetic nerve stimulation-induced PBF decrease. Results of the present study have provided evidences that even though the local vasodilatory function of CGRP are weak. CGRP is effectively involved in blocking the vasoconstriction caused by sympathetic nerve stimulation in the feline dental pulp.

자동창고의 적체현상에 관한 연구

金昌郁,金聖植,裵卿漢 한국경영과학회 1990 經營 科學 Vol.7 No.1

Automated Storage/Retrieval Systems(AS/RS) are modeled and analysed by the M/G/1 queue with vacation. The model contains two queues(one for storage, one for retrieval), a common server(S/R machine) and a storage unit. Though the probabilities are usually very small, in two extreme cases(storage racks are completely empty and completely full) the two queues govern each other's behavior, and thus it denies the independency among the queues, a necessary condition required in the M/G/1 queue with vacation. Therefore the results obtained are only approximations. Single command and dual command schemes are employed as the AS/RS operation policy and analyses are performed for both the cases.