嶺南地方 全業養豚場의 돼지 繁殖實態 調査

河成珍,金鳳煥 COLLEGE OF AGRICULTURE KYUNGPOOK NATIONAL UNIVERSI 1984 慶北大農學誌 Vol.2 No.-

A partial and preliminary report of the reproductive performance of swine in the south eastern part of Korea (Youngnam province) during 1983 was given. For the 871 farrowings recorded, the mean litter size at birth was 8.9 and 0.61 piglet per litter was stillborn. Of the total number of piglets born alived, some 15.4 percent never reached the age of weaning, the vast majority succumbing within 3 days of birth. The major factor of piglet death from birth to weaning were diarrhoea (34.6%), crushing(17.4), weak pigs (15.8%), starvation(11.8%) and pneumonia (6.7%).

Nd:YAG Contact Laser를 이용한 새로운 미세혈관문합술의 실험적 연구

김우경,정전은,박승하,임재호,조진환 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.3

A comparative study was undertaken to evaluate the contact Neodymium : yttrium aluminum garnet(Nd : YAG) laser system for vascular anastomosis of small caliber blood vessels(diameter 0.5-1.2mm) in the animal model. In this study 40 femoral arteries and 40 femoral veins of Sprague-Dawley rats were anastomosed by contact laser assisted microvascular anastomosis(LAMA) utilizing 3 stay sutures which were placed 120 degrees apart and the intervals welded with contact Nd : YAG laser unit, conventionally sutured anastomosis(CSA) served as controls. The time needed for vascular anastomosis, patency rate (immediate postoperative, postoperative 2nd day, postoperative 1 week, postoperative 4 week), gross and microscopic evaluations were compared to conventional microsurgical suture technique. The results are as follows : (1)Post-operative patency rate was 82.5% for femoral artery and 75% for femoral vein by contact LAMA technique compared to 90% and 75% by CSA technique at post operative 4 weeks. (2)Less time-consumed for arterial anastomosis by 6 minutes 23 seconds and venous anastomosis by 8 minutes 55 seconds with contact LAMA technique compared to CSA technique. (3)Grossly almost complete healing had taken place by post-operative 1 week by contact LAMA technique. (4)Aneurysm formation was 5% for femoral artery and 15% for femoral vein by contact LAMA technique compared to 5% and 10% respectively by CSA technique. (5)Microscopically, re-endothelization was complete by post-operative 7th day by contact LAMA technique. There was less medial hypertrophy and hyperplasia and also less inflammatory response compared to CSA.

교량의 정,동적 응답 특성에 관한 통계적 분석

안승수 ( Seoung Su An ),황진하 ( Jin Ha Hwang ),김주한 ( Ju Han Kim ) 충북대학교 건설기술연구소 2011 建設技術論文集 Vol.30 No.2

일반적으로 교량 상판의 거동에 큰 영향을 줄 수 있는 심각한 손상, 결함, 재료적인 열화현상이 존재하지 않는다면 안전율과 내하력은 설계하중에 대해 만족을 한다. 그러나 같은 구조형식을 갖는 교량이더라도 공용 내하력은 여러 가지 조건에 따라 차이를 보인다. 따라서, 본 연구에서는 기 수행된 교량의 안전율, 내하율, 응답 특성 등의 관련자료를 자료화하고 통계 분석하였다. 이들 변수들은 상부구조 형식별로 분류하여 분산분석을 수행하고 이들 각 변수들 간의 상관성을 분석하였다. 본 연구 결과는 상부구조 형식별 안전율, 내하율, 응답비 등의 특성에 대한 이해를 돕고, 합리적인 설계 및 진단을 위한 자료를 제공할 것으로 기대한다. Generally, if serious damage, defect, and degradation phenomena of materials that can affect behavior of bridge do not exist, the safety factors and load carrying capacity was satisfied to the design load. Also, load carrying capacity shows a considerable difference according to various condition even though the bridges have a structural type. Therefore, in this study, according to the related reports the safety factor, rating factor, and response characteristics was made a database and analyzed statistically. These variables which are classified by the superstructural type are performed analysis of variance and estimated the correlation among them. This result of this study will be expected to provide the basic information for a reasonable design and safety assessment.

정상 혈압을 보이는 제 2 형 당뇨병 환자에서 미세단백뇨와 사구체 여과율의 상관성

안승재(Seoung Jae An),정유석(Yoo Suck Jung),김성진(Sung Jin Kim),권은회(Eun Hoe Kwon),정현철(Hyun Chul Jung),이수봉(Soo Bong Lee),곽임수(Ihm Soo Kwak),나하연(Ha Yeon Rha) 대한내과학회 2002 대한내과학회지 Vol.62 No.4

배경 : 당뇨병성 신증은 말기 신장 질환의 주된 요인이며, 미세단백뇨는 제2형 당뇨병 환자에서 당뇨병성 신증의 진행과 심·혈관계 질환의 발생에 중요한 예측 인자로 알려져 있다. 그러나 뇨 알부민 배설률과 사구체 여과율의 상관성은 아직 풀리지 않는 문제로 남아 있다. 저자들은 정상 혈압을 보이고, 현성단백뇨가 없는 제2형 당뇨병 환자에서 초기 신 기능 장애를 살펴보기 위해, 뇨 알부민 배설률과 사구체 여과율을 측정하고, 그들의 상관성을 알아보고자 하였다. 대상 및 방법 : 1997년 1월부터 2001년 6월까지 부산 대학 병원에 내원한 환자들 중에서 정상 혈압을 보이고, 현성단백뇨가 없는 제2형 당뇨병 환자군 112명과 정상 대조군 30명을 대상으로 단면 연구를 하였다. 환자군은 24시간 뇨 알부민 배설률에 따라, 정상단백뇨군과 미세단백뇨군으로 구분하고, 사구체 여과율은 99mTc-DTPA 신장 스캔을 이용하여 측정하였다. 환자군과 대조군의 임상적 특징은 ANOVA를 이용하여 비교하였고, 환자군에서 뇨 알부민 배설률과 사구체 여과율 및 뇨 알부민 배설에 영향을 주는 위험 인자들은 Pearson correlation test를 이용하여 비교하였다. 결과 : 세 군에서 성별, 연령, 체질량지수는 비슷한 분포를 보였다. 또한, 정상단백뇨군과 미세단백뇨군의 평균 유병 기간 (8.3±8.0년 vs 9.1±5.9년, p>0.05)과 인슐린의 사용 비율 (57.5% vs 66%, p>0.05)은 의미 있는 차이가 없었다. 또한, 정상단백뇨군과 비교해서, 미세단백뇨군에서 당뇨병성 망막증의 유병율 (26.7% vs 58.8%, p<0.05)과 사구체 여과율 (102.9±15.5 vs 124.0±17.6 mL/min/1.73 m2, p<0.05)은 의미 있게 높은 것으로 나타났다. 또한, 제2형 당뇨병 환자군 전체에서 뇨 알부민 배설률과 사구체 여과율을 포함한 위험 인자들 사이의 상관관계를 살펴보았을 때, 사구체 여과율만이 의미 있는 양의 상관관계를 보였다 (r=0.303, p<0.05). 결론 : 제1형 당뇨병 환자에서와 같이, 정상 혈압을 보이고, 미세단백뇨를 특징으로 하는 초기 당뇨병성 신증을 가진 제2형 당뇨병 환자에서도 사구체 여과율의 증가는 뇨 알부민 배설률과 유의한 상관관계를 보였다. Background : Diabetic nephropathy is one of the major causes of end-stage renal disease. Microalbuminuria predicts not only progressive renal disease, but also increased cardiovascular morbidity and mortality. But, the relationship between urinary albumin excretion rate (UAER) and glomerular filtration rate (GFR) remains an unresolved issue. In order to investigate the early renal function abnormalities, UAER and GFR were assessed and their relationship was examined in normotensive patients with type 2 diabetes mellitus (DM). Methods : Between January 1997 and June 2001, in a cross sectional study of 112 normotensive patients with type 2 DM not showing overt proteinuria and thirty healthy subjects served as control group. According to UAER, type 2 DM patients were divided into normoalbuminuria group and microalbuminuria group. The GFR was measured using 99mTc-DTPA renal scan. Clinical values in type 2 DM patients and control subjects were compared using one-way analysis of variance (ANOVA) with Scheffe's F test. In type 2 DM patients, Univariate Chi-square analysis was used to evaluate the prevalence of diabetic retinopathy and the differences in anti-diabetic treatment. Pearson correlation coefficients were used to demonstrate a strength of an association between UAER and other variables including GFR. Results : Three groups were well matched with regard to gender, age and body mass index. There were no significant differences in disease duration and anti-diabetic treatment in type 2 DM patients. The GFR in microalbuminuric patients was significantly higher than in normoalbuminuric patients (124.0 17.6 vs 102.9±15.5 mL/min/1.73 m2, p<0.05). The prevalence of diabetic retinopathy in microalbuminuric patients was significantly higher than in normoalbuminuric patients (53.8% vs 24.7%, p<0.05). Only there was significant positive correlation between log UAER and GFR (r=0.303, p<0.05). Conclusion : As in type 1 DM patients, there was a significant relationship between UAER and GFR in normotensive type 2 DM patients without overt proteinuria.(Korean J Med 62:436-443, 2002)

교량의 정·동적 응답 특성에 관한 통계적 분석

안승수, 황진하, 김주한 충북대학교 건설기술연구소 2011 충북대학교 건설기술연구소 논문집 Vol.30 No.2

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Teaklite DSP 칩를 이용한 MPEG-I Layer3 decoder의 실시간 구현

김승훈(Seoung-Hun Kim),하호진(Ho-Jin Ha),김기호(Ki-Ho Kim) 한국통신학회 2002 한국통신학회 학술대회논문집 Vol.2002 No.7

Tunable Resistance Control via Hybrid Printing Method for Flexible Device

Jong-Jin Park,Si Young Park,Seoung Woong Park,Da In Kwak,Seung Hyeon Yoo,Su Min Ha,Sang Ki Park 한국고분자학회 2016 한국고분자학회 학술대회 연구논문 초록집 Vol.41 No.2

공용 내하율 산정에 관한 통계적 분석: 강교

안승수 ( Seoung Su An ),김주한 ( Ju Han Kim ),황진하 ( Jin Ha Hwang ) 충북대학교 산업과학기술연구소 2010 산업과학기술연구 논문집 Vol.24 No.1

This study is performed to suggest a way to get the reasonable rating factor used in evaluating the load carrying capacity of the bridge. Although the load carrying capacity of the bridges was clearly low compared to the design standard, it was examined that many of the bridges have goodexternal condition rank relatively. Also, it can be assured that load carrying capacity shows a considerable difference according to various conditions even though the bridges have similar serviced life and a structural type. Therefore, this study showed various problems of the current load carrying capacity evaluation of bridges by considering the boundary condition. Based on the existing data of 50 steel bridges, the response ratio was analyzed considering structural type, deflection, strain, serviced life, impact factor, response adjustment factor and external condition rank. The result of this study will be expected to provide the basic information for the reasonable rating factor evaluation of bridge.

Characterization of Electroplated Cu Thin Films on Electron Beam Evaporated Cu Seed Layer

Yoo Jin Song,Jung Hye Seo,Youn Seoung Lee,Joo Ha Hwang,Young-Ho RYU,Ki Min Hong 한국표면공학회 2008 한국표면공학회 학술발표회 초록집 Vol.2008 No.-

내하력 산정에 관한 통계적 분석: 콘크리트 교량

안승수 ( Seoung Su An ),황진하 ( Hwang Jin Ha ),김주환 ( Ju Han Kim ) 충북대학교 건설기술연구소 2010 建設技術論文集 Vol.29 No.2