어린 개에서 발생한 선천성 특발성 거대도식증 1례

서동규,박형진,송근호,서경원 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2012 動物醫科學硏究誌 Vol.19 No.1

Three-month-old, intact male, weighting 2.6 kg. Dachshund dog visited to the Veterinary Medical Teaching Hospotal of Chungnam National University with history of regurgitation. Result of blood analysis was in the normal range. On the radiographic examination, diffuse esophageal dilatation was observed. On the esophagram, esophageal dysmotility was observed. Acetylcholine receptor antibody titer was in the normal range. On the endoscopy, esophagitis was observed. Diagnosis was congenital idiopathic megaesophagus. This is the case report of congenital idiopathic megaesophagus.

개에서 발생한 파열된 전이성 비장 혈관육종 1례

서동규,박형진,송근호,서경원 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2012 動物醫科學硏究誌 Vol.19 No.1

Twelve-year-old, catrated male, weighting 8 kg, Miniature Schnauzer dog was referred to the Veterinary Medical Teaching Hospital of Chungnam National University with history of depression. Result of blood analysis revealed anemia, thrombocytopenia, azotemia, elevated ALP, ALT and CK. On the radiographic examination, splenomegaly and loss of abdominal serosal detail were observed. Abdominal ultrasonography showed rounded mass of spleen and liver, ascites were observed. Splenectomy was performed and found that splentic tail had been ruptured and two samples from nodules on liver were obtained for histopathology. The result of biopsy revealed that hemangiosarcoma of spleen metastasized to the liver. Carboplatin was chosen as the patient had congestive heart failture. During chemotherapy hemangiosarcoma was metastasized into peritoneum and abdominal cavity. Intraperitoneal chemotherapy was preceded at this moment. After 99 days of initial visit, patient was euthanized due to severe anemia and thrombocytopenia.

아파트 프로젝트의 시공성 실무적용방안 분석에 관한 연구

한경훈,김문규,박찬식 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

Process of construction project is made of plan, design, procurement, construction, and maintenance, which are closely related each other. for the success of project, each step of process should maintain the interface. The concept of constructability appeared in the practical business of an advanced country to maximize efficient integration. However, the concept of constructability in our country is not used in overall process to optimize each phase. To proceed the study, first, impact factors of constructability were identified, and had an interview with professionals. As a result, complexity of design in design phase, and responsibility of the contractors in construction phase are analyzed as the most important thing. Based on this result, I made secondary survey to identify the facts needs to be considered to applicate the analysis on the practical business. As the result of secondary survey, the ranking of considerations for application of practical business was identified. Therefore, this study suggested the basic direction to the applications of constructability.

고무상입자가 치과용 복합레진의 물리적 성질에 미치는 영향

최경규 大韓齒科保存學會 1998 Restorative Dentistry & Endodontics Vol.23 No.2

엔드밀 형상에 따른 가공특성 분석을 이용한 형상설계 S/W 개발

한창규,고성림,유중학,서천석,김경배 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

The tool geometry parameters and cutting process have complex relationships. Until now, various cutting test were needed to acquire optimal design of end mill for the purpose of high speed machining, due to the insufficient knowledge about cutting process in high speed machining. Using various tools with different geometry, relationships between tool geometry parameter (rake angle, clearance angle, length of cutter) and cutting process (cutting force, surface accuracy, surface roughness) have been studied. Acquired data can be used to design optimal tool for high speed machining and developed tool geometry design S/W.

Cadmium Chloride가 흰쥐 신장에 미치는 영향에 관한 조직화학적 연구

이규식,백두진,김원규,정호삼,백태경,김영학 漢陽大學校 環境科學硏究所 1993 環境科學論文集 Vol.14 No.-

중공업의 발달에 따라 공장등지에서 중금속인 cadmium을 이용한 제품의 생산이 증가함에 따라 자연계내 토양, 물, 식물 등에 함유된 cadmium 뿐 아니라 공업제품과 공업 쓰레기에 함유된 cadmium은 쉽게 인체에 폭로되어 인체에 유해한 결과를 초래하게 된다고 알려져있다. 이에 저자는 cadmium이 생체내 신장에 특히 오랜기간 축적된다는 보고와 또 반감기가 긴 중금속이란 점에 착안하여 신장의 피질과 수질내 조직학적 변화를 관찰하고자 하였다. 실험동물은 사육실에서 순종 분리고 4년간 사육한 Wistar계 흰쥐를 사용하였다. 흰쥐에 체중 kg당 0.6mg의 cadmium chloride를 식염수 0.2ml에 용해하여 복강내로 10주간 매주 1회씩 투여한 후 희생기켜 신장조직을 paraffin 표본으로 제작하고 Mallory-Azan 염색을 시행하여 광학현미경으로 관찰한 후 다음과 같은 결과를 얻었다. 1. Cadmium chloride 10주간 투여후 1일 경과군에서 신장의 피질과 수질에 강한 Azan 염색반응을 보였으며 신사구체의 괴사와 수질 일부에서 간질성 섬유증식 및 울혈이 관찰되었다. 2. Cadmium chloride 10주간 투여후 1주 경과군에서는 신장의 피질과 수질에 중등도의 Azan 염색반응이 관찰되었고 신사구체의 국소적 괴사가 관찰되었다. 3. Cadmium chloride 10주간 투여후 2주 경과군에서는 신장의 피질에 중등도의 Azan 염색반응이 관찰되었으며, 4주 경과군에서는 피질과 수질에 약한 Azan 염색반응만 관찰되었다. 이상과 같은 결과로 미루어 cadmium chloride의 흰쥐에 장기간 투여는 미량이라도 신장의 신사구체의 괴사, 섬유화 등이 유발되나 투여후 4주 경과시는 손상이 회복되는 것으로 사료된다. The peritoneal injections of cadmium chloride(0.6mg/kg) per 1 week for 10 weeks were made. The cadmium chloride treated rats were sacrificed on 24 hours, 1 week, 2 weeks and 4 weeks after 10 weeks administration. And each of renal tissues from cadmium treated rat kidney was stained with Mallory Azan. 1. The severe glomerular necrosis, fibrosis and congestions in 1 day group were seen in the cadmium chloride treated rats medulla. 2. The moderately positive reaction for azan stain was seen in cortex and medulla of 1 week group in the cadmium chloride treated rats medulla. 3. The weakly positive reaction for azan stain was revealed in cortex and medulla of the rat kidenys on 2 weeks and 4 weeks after cadmium chloride administration for 10 weeks. It is concluded that the renal damage of rat resulted with administration of cadmium chloride may be recovered 4 weeks after injection.

대형할인점 리모델링 프로젝트의 CM at Risk 적용 타당성에 관한 연구

최규산,이호경,박영호,백준홍 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

Remodeling projects are on a increasing trend because of the old buildings built in 1960-70's, the preference for energy saving and the changes of social demands and government policies, etc. And also discount-store projects, which are rapidly increasing, are characterized by the fact that they are repetitive and have analogous scale and structure. Therefore, it is necessary to develop the concept discount-store model and apply the appropriate project delivery system for a successful execution of the projects. The purpose of this study is to analyze the characteristics of the discount-store remodeling projects and propose CM at Risk for the optimum delivery system of those projects.

제어기를 이용한 원통박육부재의 에너지흡수특성

기경서,김선규,양인영 조선대학교 에너지.자원신기술연구소 2000 에너지·자원신기술연구소 논문지 Vol.22 No.1

In this paper, collapse test of thin-walled circular tube member is performed under axially static in consideration of the collapse characteristics to develop the optimum structural members. Furthermore, the energy absorption characteristics is observed according to the controller, height of the controller, clearance between specimen and controller. thickness of the controller. As a result, it was clear that the energy absorption characteristics of circular tubes were influence by the controller, height, clearance, thickness in this study.

한 자동차 회사의 남성 사무직 근로자에서 직무스트레스와 우울, 불안 및 스트레스 증상과의 관련성

박규철,이경종,박재범,민경복,이규원 大韓産業醫學會 2008 대한직업환경의학회지 Vol.20 No.3

목적: 직무스트레스와 관련성이 있는 우울증,불안 장애 등의 정신과적 질병이 증가하고 있는 상황에서 한 자동차 회사의 남성 사무직 근로자를 대상으로 우울,불안 및 스트레스 증상의 수준을 파악하고 직무스트레스와 우울,불안,스트레스 증상과의 관련성을 살펴보고자 하였다. 방법: 연구 대상자 286명을 설문조사하였다. 직무스트레스 수준과 우울,불안,스트레스 증상을 평가하기 위해 한국인 직무스트레스 측정도구(Korean Occupational Stress Scale; KOSS)와 우울,불안,스트레스 측정도구(Depression Anxiety Stress Scale; DASS)를 사용 하였다. 설문지의 신뢰도와 타당도를 평가하였고 로지스틱 회귀분석을 시행하여 한국인 직무스트레스 측정도구의 8개 영역에 걸쳐 우울,불안 및 스트레스 증상과의 관련성을 살펴보았다. 결과: 연구 대상자에서 우울,불안 및 스트레스 증상이 있는 경우는 각각 57.7%,37.7%, 42.2%였으며,심각 하거나 매우 심각한 우울,불안 및 스트레스 증상을 보이는 경우도 각각 19.6%, 4.8%,8.0%로 조사되었다. 직무스트레스의 총점수가 높은 군에서 우울,불안 및 스트 레스 증상의 발생 비차비는 각각 4.93(95% C.I. = 2.38∼10.24),2.70(95% C.I.=1.58∼5.11). 3.53 (95% C.I.=1.90∼6.56)이었다. 직무스트레스 요인 중 조직체계가 우울 증상의 발생과 관련성이 가장 높았으며 (OR=4.83, 95% C.I.=2.43∼9.58), 직무요구도는 불안 및 스트레스 증상의 발생과 관련성이 높았다(OR=3.21, 95% C.I.=1.77-5.85; OR=4.66, 95% C.I.=2.53∼8.58). 결론: 자동차 회사의 남성 사무직 근로자에서 직무스트레스가 높은 군이 낮은 군에 비해서 우울,불안 및 스트레스 증상이 발생하는 경우가 많았다. 직무요구도와 조직 체계에 대한 개선을 통해 우울,불안 및 스트레스 증상의 발생을 감소시킬 필요가 있다. Objectives: To investigate the relationship between occupational stress and depression, anxiety, and stress symptoms among white-collar male workers in an automotive company. Methods: A cross-sectional study involving 286 white-collar male workers was conducted with the Korean Occupational Stress Scales (KOSS) and Depression Anxiety Stress Scales (DASS) questionnaire. Results: According to the DASS cut-off value (≥78 percentile scores), the prevalence of depression, anxiety and stress system was 57.7%, 37.7% and 42.2%, respectively. By logistic regression analysis, organizational system was the factor most strongly associated with depression (OR=4.83, 95% C.I.=2.43-9.58), while job demand was strongly associated with anxiety (OR=3.21, 95% C.I.= 1.77-5.85) and stress (OR=4.66, 95% C.I.=2.53-8.58). Conclusions: Occupational stress was positively associated with depression, anxiety, and stress symptoms among white-collar male workers in an automotive company. A prospective study is warranted to delineate the causal relationships between job stress and psychiatric disorders.

퇴행성 요추 전방전위증의 수술적 치료

이준규,김경태 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2

Degenerative spondylolisthesis is the forward slippage of one vertebra to another due to degenerative arthritic changes in the facet joint without isthmic defect. This do not respond to the routine conservative treatment. Regarding the surgical procedures, it is now generally accepted that decompression with or without fusion. Authors reviewed 15 cases of the degenerative spondylolishtesis who were surgically managed with decompression and posterior fusion with CD (Cotrel-Dubosset) instrumentation at department of orthopedic surgery, Chungnam National University Hospital from July 1991 to October 1993. The results were follows : 1. The cases were 2 males and 13 females having age from 38 to 61 years (average 49.3). Follow up duration was average 16 months. 2. The vertebral slippage was occurred at L3-4 2 cases, L4-5 8 cases, L5-S1 5 cases. 3. Slippage percentage was average 18.5% and instability was found at 9 cases(60%) 4. In preoperative myelogragm with computed tomography, there were stenosis and nerve root compression. In MRI, 15 cases were appeared degenerative change of intervertebral disc. 5. Reducibility was 60%(9 cases). 6. The pationts were rated according to the criteria by Gill etc.. Follow up results were exellent in 4 cases, good in 8 cases and fair in 3 cases. 7. In postoperative 6 months, there was no instability on plain flexion and extention lateral view. So we might conclude that surgical treatment with decompression and posterior fusion give good results to the degenerative spondylolishtesis.