• 산업경영시스템학회지
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• 제19권40호
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• pp.311-319
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• 1996

Cumulative trauma disorders (CTD) refer to a category of physical signs and symptoms due to chronic musculoskeletal injuries where the antecedents appear to be related to some aspect of repetitive work which can be found commonly in modern industries. This paper describes impacts of CTD on modern industry and summarizes recent resent research efforts and suggests an ergonomic program to prevent incident of CTD in hand-intensive industry.

• Journal of Chest Surgery
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• 제21권3호
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• pp.526-530
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• 1988

Acquired communicated fistula between the esophagus and respiratory system are infrequent and they are caused by carcinoma, trauma, infection and traction. This report reviews the feature of acquired esophagobronchial fistula[that developed spontaneously]. Patient is 34 year old man with excellent result by surgical intervention. The surgical procedures consist of division and repair of the fistula. Clinically and radiologically, the patient is free from coughing after drinking, substernal distress, esophagorespiratory fistula, and esophageal stricture after surgical treatment.

• 산업경영시스템학회지
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• 제23권55호
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• pp.33-42
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• 2000

It is difficult to estimate the effective factors upon Cumulative Trauma Disorders in real workplace because those are developed by combination of various risk factors for time. The purpose of this paper was to evaluate relative level of CTDs risk factors such as task-related factors, anthropometric factors, joint deviation factors and personal factors using fuzzy linear regression models. And the models are built corresponding to each category with the survey data from telephone operators. The coefficient of fuzzy models are described as the relative level of variable to present risk factors upon CTDs.

• Journal of Chest Surgery
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• 제16권3호
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• pp.405-410
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• 1983

Acquired communicated diverticula between the esophagus and respiratory system are infrequent, and they are caused by carcinoma, trauma, infection, and traction. This report reviews the feature of benign esophagobronchial fistula due to midesophageal diverticulum. Patient is twenty year old man with excellent result by surgical intervention . The surgical procedures consist of divertuculectomy and superior segmentectomy of lower lobe of right lung. Clinically and radiologically, the patient is free from substernal distress, regurgitation, esophagorespiratory fistula, and esophageal stricture after surgical treatment.

• Journal of Chest Surgery
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• 제23권3호
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• pp.594-599
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• 1990

Congenital or acquired esophagotracheobronchial fistula are rare. The chief causes of the acquired form are malignancy developing on the esophagus or tracheobronchial system and infection, and trauma. The pathognomonic symptom is a paroxysmal cough occurring several seconds after ingestion of liquids. This report reviews a case of bronchoesophageal fistula of unknown origin accompanying bronchiectasis. The patient is 32 years old woman with excellent result by surgical intervention. But the fistula is accidently found in the operation field. The surgical procedures consissts of fistulectomy with Right lower lobectomy.

• Journal of Chest Surgery
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• 제12권4호
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• pp.371-378
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• 1979

The authors have performed operations on vascular system of 108 cases from 1972 through 1979, and analyzed the diseases, surgical procedures and results. They were 1. Arterial system; 45 cases P.D.A. : 20 Occlusive diseases : 13 Coarctation of aorta : 4 Aneurysm : 4 A-V fistula : 2 Trauma : 2 2. Venous system; 6 cases Esophageal varix : 4 S.V.C. syndrome : 1 Varicose vein : 1 3. Arteriovenous shunt for hemodialysis; 57 cases Of the arterial diseases, the worst results came from Burger`s disease. For the bleeding esophageal varices, we have performed ligations of varices or collateral circulations rather than emergency splenorenal shunt with good results. External A-V shunt for hemodialysis had much more complications than the A-V fistula.

• 대한치과의사협회지
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• 제11권3호
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• pp.171-175
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• 1973

A 9-year-old girl, in good health, presented a horizontal impaction of the upper left central incisor. History revealed that the patient had been involved in a trauma of the maxillary anterior portion during her childhood. This impacted tooth crown, which was exposed surgically, was bonded by plastic attachments of direct bonding system, and was carefully tried to induce on the dental arch. On the process of the orthodontic treatment the tooth was completely induced and in normal alignment on the arch. The treatment result was very satisfactory; color, vitality, and mobility were normal, periodontal support was good and the cosmetic result was excellent.

• 산업경영시스템학회지
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• 제22권52호
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• pp.323-335
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• 1999

Spinal injuries are common these days and are increasing due to the increasing sports activities, auto-related accidents, and occupational incidences. Most of spinal injuries of strain and sprain are associated with trauma and resulted in loss of optimal musculoskeletal system in spinal column area. Some of these injuries requires surgical treatments. Fortunately, some people with spinal disorder are achieving outstanding results with the chiropractic care which utilizes muscle stimulation and strengthening, traction therapy, and spinal adjustments. These treatments using chiropractic table can ease pain by restoring alignment, improving mobility, and relieving pain and stiffness in neck and spinal areas. The purpose of this study was thus to gather the comprehensive information about spinal injuries, to define the specific dimensions, and to recommend functions of chiropractic table specially suited for Korean. This study was an integrated approach in applying the concepts of biomechanical correction of the musculoskeletal system. Also, this study was to utilize a knowledge of physics, ergonomics, and rehabilitation to the development of spine cure medicine.

• 한국응급구조학회지
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• 제11권1호
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• pp.53-64
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• 2007

Purpose: Ths study aims to examine characteristics of patients using emergency room after execution of five-day workweek system by government and provide basic materials for operation of efficient emergency room. Methods: Data were collected tbrough medical records of patients visiting emergency room from July of 2004 to October of 2006 and they were analyzed with SPSSlPC 10.0. Conclusion : 1. The number of patients visiting emergency room was average 16.7 persons a day in 2004, 17.5 in 2005 and 18.6 in 2006 and it was found that it was increasing every year since the execution of five-day workweek system 2. Gender distribution of subjects using emergency room was higher in male than in female every year. 3. Means of transport to emergency room were mostly private car and others(public transport or on foot), but use of ambulance was increasing. 4. Residential areas of subjects were mostly 'Myeon area' in 2004~2005, but it was changed to residents at 'Eup area' in 2006. 5. Distribution of patients by medical departments was highest in internal medicine and surgery in 2004~2006 and rate of visiting pediatrics was increasing every year. 6. Time to stay at emergency room was most at 'below 30 min'. in 2004~2006, but cases of stay for 'more than 2 hours' were increasing every year. 7. On presence or absence of trauma in patients visiting emergency room, rate of visit to emergency room with 'no trauma' was higher and this result was increasing every year. 8. As a result of classifying severity of patients visiting emergency room, use rate of emergency room by 'non-emergency' patients was over 90% in 2004~2006 and such a phenomenon was deepened in 2006 compared to that in 2004. 9. Measures after emergency care of patients were most in case of 'discharge' in 2004~2006, but cases of admission to hospital after emergency care were increased every year. 10. According to use of emergency room by a day of the week, use on Sunday was most frequent in 2004~2006, but use on Friday the day before holiday was increasing. 11. According to distribution by age, use by those between '40~49' was most in 2004~2005, but use by those 'below 10' was most in 2006. 12. According to time to visit emergency room, using emergency room at "15:31~23:30 was most in 2004~2006, cases of visiting emergency room at day working hour were decreased every year and those at evening and night working hours were increased. Conclusion: In sum, it was found that characteristics of patients visiting emergency room and their actual status were changed after the execution of five-day workweek system and efforts to rearrange emergency medical system are required.

• 동력기계공학회지
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• 제11권2호
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• pp.38-43
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• 2007

전자기적으로 지지되는 임펠러를 가진 원심 혈액 펌프는 기존의 심장 펌프에 비해 많은 장점을 가지고 있지만, BVAD의 틈새에서 발생하는 유체 동역학적인 문제는 여전히 규명이 되지 않은 상태이다. 본 연구에서는 BVAD의 틈새에서 발생하는 혈액외상(blood trauma)의 예측에 대한 연구에 중점을 두고 있다. 일반적으로 원심 혈액 펌프의 설계를 위해 전자기적으로 지지되는 원심 혈액 펌프의 디스크 틈새에서 발생하는 혈액의 손상을 평가하는 방법으로 CFD를 이용한 방법이 널리 이용되고 있다. 따라서, 본 연구에서는 초기 원심 혈액 펌프의 설계 단계에서 펌프의 특성을 평가하기 위하여, 축 방향 틈새의 영향과 회전수 변화에 따른 누수경로의 전단 응력의 크기 평가를 CFD를 사용하여 해석하여 보았다.