미세혈관 협심증 환자의 임상상 및 지표에 관한 연구

박상호,온영근,김현정,이태훈,길효욱,김현건,박수진,송해정,한대희,방덕원,신원용,이내희,김성구,권영주 순천향의학연구소 2003 Journal of Soonchunhyang Medical Science Vol.9 No.1

Background : Microvascular angina or syndrom X is heterogenous and encompasses different pathogenetic entities. Several studies suggest that microvascular angina have good prognosis and occurs predominantly in postmenopausal women. Lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, CRP and fibrinogen are the independent risk factor of acute coronary syndrome and are the chief underlying cause of atherosclerosis. We investigated clinical characteristics and markers in patients with microvascular angina. Methods : We studies 23 patients diagnosed with microvascular angina and 16 control group with negative treadmill exercise test and no significant coronary angiogram. We investigated clinical characteristics in patients group and evaluated symptom during a follow-up period of 4.2± 2.5 month. Exercise time in treadmill exercise test was compared between patients and control group. We assessed the level of markers, such as lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, CRP and ESR in two groups. Results : There is no difference in age between two groups. Patients group had a tendency to increase in female, hypertension, DM, and smoking history, but there was no statistical significance difference. Exercise duration time was significantly decreased in patients with microvascular angina (p<0,05). Serum lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholestrol, Triglyceride, ESR, Fibrinogen and Homocystein value were no significant difference between microvascular angina and control group. Only CRP was significantly high in patients with microvascular angina (p<0.05). Conclusion : There was no statistical significance difference in age, sex, hypertension, DM and smoking history between two groups but patients group had a tendency to increase the prevalence in hypertension, DM and smoking history, female. Also, Symptom improvement and disappearance in follow-up was presented in 11 patients of 19(57.9%). Exercise tolerance was worse in patients group than control group. CRP value was significantly higher in patients group than control group. There was no statistical significance difference in lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, ESR and Fibrinogen between two groups.

Cholelithiasis complicated with biliary sludge and urolithiasis in a dog

Seung-gon Lee,Dong-gun Kim,Joon-seok Lee,Ho-hyun Kwak,Hyun-sook Nam,Heung-myong Woo*, In-Chul Park**, Changbaig Hyun1,In-chul Park,Chang-baig Hyun 한국임상수의학회 2006 한국임상수의학회지 Vol.23 No.3

A 10-year-old intact female Miniature Schnauzer dog was referred with the primary complaint of persistentanorexia, remittent fever, vomiting and abdominal pain. Hemogram suggested a chronic inflammatory disease. Serumbiochemistry showed moderate hepatobiliary cellular damage with severe cholestasis. Abdominal radiography andultrasonography revealed hepatomegaly, choleliths and sludges in gall bladder and small stones in urinary bladder. Basedcholecystectomy and cystectomy, choleliths and uroliths were removed from gall bladder and urinary bladder,respectively. The clinical condition was dramatically improved after surgery.

초경량성 재료인 Mg-10Li-3A1 합금의 TMP 처리를 통한 기계적 특성 향상 방안

김광배,홍준표,김영인,홍원식,배현근 한국 항공대학교 항공산업기술연구소 1998 航空宇宙産業技術硏究所 硏究誌 Vol.8 No.-

초경량 고강도 Mg-10Li-3Al 합금이 용탕단조법에 의해 제조되었다. 주도된 상태의 미세구조는 β상 기지에 균일하게 분포된 AlLi 및 MgAl₂Li를 포함하는 HCP α상과 BCC β상으로 이루어졌다. α상의 초기 결정립 크기는 100㎛였다. Mg-Li 합금에 Al을 첨가하는 것은 용체화 처리 및 시효를 통한 석출 경화에 기인하여 합금의 강도 및 경도를 향상시켰다. 결정립 미세화를 위한 TMP처리가 냉간 가공과 연이은 300℃, 30분 동안의 어닐링에 의해 수행되었다. 결과적으로 나타나는 미세구조는 재결정화되지 않은 α상과 재결정화된 β상으로 이루어졌다. 냉간 가공량이 증가함에 따라 합금의 결정립 크기가 감소하였고, 최종 결정립 크기는 3.5㎛였다. 가공 열처리된 Mg-10Li-3Al합금은 용탕단조된 합금보다 높은 강도와 연신율을 보였다. Superlight and high strength Mg-10Li03Al alloys were fabricated by squeeze casting. The as-casted microstructure was consisted of a mixture of a mixture of HCP α and BCC β phases including AlLi and MgAl₂Li precipitates, which were uniformly distributed in the βmatrix. Initial grain size of α phases was 100㎛. The addition of Al in Mg-Li alloy had improved the strength and hardness due to the precipitation hardening through solution heat treatment and aging. Thermomechanical Processing(TMP) for grain refinement was carried by cold working and immediate annealing for nucleation at 300℃ for 30 minutes. Subsequent microstructure was consisted of unrecrystallized α and recrystallized β phases. The more the amount of cold working increased, the more the grain size of the alloy was decresed. Final grain size was 3.5㎛. Thermomechanically processed Mg-10Li-3Al alloy had higher strength and elongation than as-casted alloy.

요통 및 방사통 환자에서 고장성 식염수를포함한 경막외 주사 효과

김현배,김미정,최기섭,이상건 大韓再活醫學會 1999 Annals of Rehabilitation Medicine Vol.23 No.1

신경망 페트리 네트를 이용한 생산 시스템의 작업 계획

金建勳,高仁善 弘益大學校 科學技術硏究所 1996 科學技術硏究論文集 Vol.7 No.2

The Idling time (IT) matrix is proposed to schedule job patching sequences in automated manufacturing systems. Using the method, the idling time of resources can be minimized. The job sequence is modeled by Neural Petri Nets with a time constraint to generate real time control signals. The results are applied a simple automated assembly system consisting two robots and a conveyor.

플라스마 질화처리된 Ti-6Al-4V 합금의 고온 산화 거동에 관한 연구

김영인,배현근,김광배 한국항공대학교 1998 論文集 Vol.36 No.-

Ti-6Al-4V 합금에 d.c. 플라스마 질화처리를 실시하고 600℃, 650℃, 700℃의 온도에서 200시간 등은 산화 시험을 실시하여 플라스마 질화처리를 실시하지 않은 Ti-6Al-4V 합금과의 고온 산화 거동을 비교 연구 하였다. 산화 거동은 산화후 시편의 중량 변화량을 측정하여 분석하였으며, 형성층의 미세조직을 관찰 및 상분석을 위하여 주사 전자 현미경 및 XRD를 이용하였다. Ti-6Al-4V합금은 산화 시험 온도 및 산화 시간 증가에 따라 산화 시험후 무게가 증가함을 보였다. 플라스마 질화처리된 Ti-6Al-4V합금의 경우에도 산화 온도 및 산화시간 증가에 따라 산화 시험후 무게가 증가함을 보였다. 플라스마 질화에 의해 합금 표면에 TiN 및 Ti₂N의 질화층을 형성시켰으나 산화 시험 온도 범위에서 TiO₂층의 형성을 근본적으로 억제할 수는 없었다. 그러나 플라스마 질화처리된 시편의 경우, 플라스마 질화처리된 시편에 비해서 산화 후 무게 증가량이 현저하게 감소하였다. 이는 질화층위에 산화층이 형성되기는 하지만 질화층이 산소의 내부 확산을 저지하는 장벽으로 작용하여 형성 산화층의 성장이 억제된 것에 기인하는 것으로 판단되었다. Plasma nitriding was performed at Ti-6Al-4V alloy. Isothermal exidation test was carried out at 600℃, 650℃, 700℃ for 200 hours. Oxidation behavior was studied by measuring weight change of specimen after oxidation test. Microstructure of nitrided and oxidized layer was characterized by SEM, XRD,EPMA analysis. Weight gain rate transition of Ti-6Al-4V alloy is parabolic to linear plasma nitrided layer of Ti-6Al-4V was dissociated proportional to oxidation temperature and time. TiN and Ti₂N layer formed by plasma nitriding didn't supress TiO₂formation on the nitride surface. In the case of plasma nitrided Ti-6Al-4V alloy, weight gainrate was sustained at initial oxidation period but decomposed at high temp. Nitrded layer was thermally unstable.

계측용 포터블 ESPI장치에 의한 강구조물의 결함 및 진동해석에 관한 연구

김경석,정현철,최지은,정운관,김홍건 조선대학교 생산기술연구소 1999 生産技術硏究 Vol.21 No.2

평판의 진동모드와 진동수의 실험적 해석을 비접촉 광학적 방법인 ESPI법을 이용하여 상세히 기술하였다. ESPI를 이용하여 진동모드와 진동수를 측정하기 위해 두 개의 다른 재료 로 된 시험편을 준비하고 세장비의 변화에 따라 두 개의 다른 가진점을 택해 가진 하였다. 측정된 결과는 유한요소해석(FEA) 및 Warburton이 제안한 이론해석과 정성적으로 비교하였다. 실험적 결과는 이론해석 결과는 물론 FEA 결과와도 잘 일치함을 알수 있었다. 결과적으로 ESPI 법이 진동모드와 진동수의 고정도 해석에 이용할 수 있음을 확인하였다.

편마비 환자의 정상측과 마비측의 비복근 운동점에서의 근육 두께 차이

김동건,도현경,김현동,황지선,정규영,정호중 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.1

Objective : To investigate any difference of muscle thickness in the motor points of the gastrocnemius between the paretic and non-paretic legs in hemiplegics. Method : Ultrasonography was used to assess in vivo the gastrocnemius muscle thickness at the motor points in the paretic and non-paretic legs of twenty-four patients with stroke. Results : Muscle thickness at the motor points were reduced in the paretic legs compared to the non-paretic legs (p<0.05). There was no correlation between muscle thickness and duration of hemiplegia, site of hemiplegia. However, it did not take regular pattern of the muscular atrophy in the paretic legs. Conclusion : The gastrocnemius muscle of the paretic leg had smaller thickness compared with the non-paretic leg. The present results indicate that paresis in hemiplegics may affect the accuracy of intramuscular injection of botulinum toxin A. Therefore, we recommend ultrasonography for visually controlled, anatomically precise injection of botulinum toxins.

혈액투석 환자의 희망과 삶의 질

김정희,박점희,김현미,장군자 慶北大學校 醫科大學 1997 慶北醫大誌 Vol.38 No.1

목적 : 혈액투석 환자의 희망과 삶의 질 정도를 파악하고, 이 두 변수들 간의 상관관계를 규명하여 희망이 삶의 질을 향상시키는 중요한 개념임을 밝혀서 혈액투석 환자들을 간호하는데 필요한 기초자료를 제공하고자 시도되었다. 대상 및 방법 : 연구대상은 대구시 소재 3개 대학병원, 1개 종합병원의 인공신장실에 주기적으로 내원하여 혈액투석 치료를 받는 환자 100명이었으며, 연구도구는 Miller가 개발한 희망 측정도구와 노유자가 개발한 삶의 질 측정도구를 이용하였다. 구조화된 질문지를 이용한 면담을 통해 자료수집을 하였으며, 수집기간은 1996년 11월 7일부터 1997년 1월 8일까지였다. 수집된 자료는 SAS프로그램을 이용하여 전산처리하였으며, 백분율, 평균, t-test, ANOVA를 이용하여 분석하였다. 결과 : 혈액투석 환자의 희망 정도는 평균평점 3.09, 삶의 질 정도는 평균평점 2.97로 나타났고, 대상자의 희망과 삶의 질은 유의한 순상관관계가 있는 것으로 나타났다(r=0.681, p<0.001). 대상자의 일반적 특성별 희망 정도는 연령, 결혼상태, 교육정도, 가족 월수입, 건강지각 수준에서, 삶의 질 정도는 교육정도, 가족 월수입, 건강지각 수준에서 유의한 차이가 있었다. This study was designed to identify the relationship between the hope and the quality of life of hemodialysis patients. The subjects of this study were 100 hemodialysis patients who obtained from 3 unirersity hospitas and I general hospital in Taegu. Hope was measured by the questionnaire that has been developed by Miller. Quality of life was measured by the questionnaire that has been developed by Ro, You-Ja. The data was collected during the period from Norember, 7, 1996 to January, 8, 1997. The data was analyzed by percentage, mean, t-test, ANOVA. The results were as follows. The item mean score of hope scale was 3.09. There were significant association between hope and age, marital status, education level, monthly income, perception status of health. The item mean score of qualify of life was 2.97. Of the 6 dimensions of the quality of life ; the score for family relationship was the highest(3.39), which is followed by relationship with neighbors(3.36), self-esteem(3.08), emotional.

萬頃江流域에 있어서 井水中의 弗素含量에 관한 硏究

金完泰,安榮根,申和雨,張賢淑 원광대학교 식품약품안전성연구소 1987 食品藥品安全性硏究 Vol.1 No.-

This study is the survey about Fluorine contents in the well water of area of Mankyung River side and water of Mankyung River. The result of this survey is as followings: The water of well in this area contained 0.5∼1.3ppm and it's average value was about 0.8 ppm. The water from Mankyung River contained 0.8∼0.9ppm and it's average value is 0.87ppm. By the regionally sectional survey the well water of the area of Mankyung River side, the well water of Chun-Ju, Iri, Samye, and Kusan contained 0.5∼0.8ppm, but the well water of Baikku area contained 0.6∼1.3ppm. Especially in Baikku area 63% of well contained 0.6∼1.0ppm and 38% of well contained 1.1∼1.3ppm. From the above results one can conclude that the 38% of well water of the Baikku area is troubled one.