• Archives of Reconstructive Microsurgery
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• 제24권1호
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• pp.37-39
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• 2015

Epidermal inclusion cyst is a common mass in life. It is covered with a stratified squamous epithelium, thus, there is a granular cell layer adjacent to the keratin-containing cyst lumen. It can be caused by mechanical force, trauma, or a spontaneous event. It can rupture spontaneously or be ruptured by external mechanical forces. Epidermal inclusion cysts that exhibit inflammation or recur should be removed by simple excision. In this case, the patient showed an epidermal inclusion cyst under an anterolateral thigh free flap, which can cause the palpable mass to go unnoticed. First we thought he had neuroma formation after a surgical procedure on his foot. However it was an epidermal inclusion cyst, which was diagnosed by a special pathologist. It is a curious and rare case.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2007년도 정기 학술대회 논문집
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• pp.265-270
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• 2007

According to previous research, welding-induced residual stresses in steel structures can significantly affect the fatigue behaviour. Usually, high tensile residual stresses up to the yield strength are conservatively assumed at the weld toes. This conservative assumption can result in misleading fatigue assessments. Thee welding-induced residual stresses need be known in advance for a reliable fatigue assessment, which becomes possible to an increasing extent by numerical welding simulation. In this study, a fatigue Analysis technique for steel structures with welding induced residual stress is presented. First, We calculate the history of temperature according with welding process. Secondly, residual stress with a welding thermal history was evaluated by non-linear thermal stress analysis and lastly, fatigue strength is estimated with modified Goodman equation which can consider the effect of mean stress level.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.222-227
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• 2004

Under cyclic loading, the fatigue failures of welded joints occur at weld toes which induce stress concentration by weld shape. So we need to obtain the peak stress and the S-N curve to assess the fatigue strength of welded joints. However the measurement of peak stress is of high uncertainty and low reproducibility, so we use nominal stress instead in fatigue tests of welded joints. In this study, fatigue tests to obtain S-N curves and FE analyses to obtain stress concentration factors were conducted for the two types of cruciform fillet welded joints, that is, load-carrying and non load-carrying types. Then we changed the obtained S-N curves to that based on peak stress using the hot-spot stress concept. From the analyses of the S-N curves obtained, we have concluded that there is a need to develop a new method to evaluate the fatigue life.

• 대한골관절종양학회지
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• 제13권2호
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• pp.190-194
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• 2007

거대 세포종은 서서히 자라는 일측성의 국소형 종물로서 수부에서 흔하고 고관절, 족지관절에서도 보고되나 슬관절내에서는 드물게 발생한다. 이에 저자들은 슬관절 관절강내에서 발생한 거대 세포종 1예를 관절경하에 제거한뒤 병리학적으로 확진하였으며 이를 문헌고찰과 함께 보고하고자 한다.

• 수면정신생리
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• 제15권1호
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• pp.17-24
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• 2008

Periodic leg movements during sleep (PLMS) are best described as repetitive stereotypical movements of the lower extremities characterized by dorsiflexion of the ankle, dorsiflexion of the toes and a partial flexion of the knee and sometimes the hip. The prevalence of PLMS is about 5-11% in adults and is predicted much higher than previously surveyed. They are also frequently found in various sleep disorders, several disorders not primarily affecting sleep, and patients taking psychiatric medications. Although they are rarely found in children, they are common findings in children referred to a pediatric sleep laboratory. The pathophysiology is strongly associated with decline of central dopaminergic function and closely related to arousal system during sleep. Benzodiazepines, levodopa, dopamine agonists and opioids are generally recommended for treatment but more controlled studies on the effectiveness are needed.

• 한국생산제조학회지
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• 제18권5호
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• pp.521-528
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• 2009

In these days, biomimetic apprioach in the design and control of robotic system has drawn much attention. The human-being and mammals possess their own feet. Using the mobility of their feet, they are able to walk in various environments such as plain land, desert, swamp, and so on. Previously developed biped robots and four-legged robots did not employ such adaptable foot. In this work, a biomimetic foot mechanism is investigated through analysis of the foot structure of the human-being. This foot mechanism consists of a toe, an ankle, a heel, and some springs replacing the foot muscles and tendons. Using five toes and springs, this foot can adapt to various environments. A mathematical modeling for this foot mechanism was performed and its characteristics were observed through numerical simulation.

• 대한인간공학회지
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• 제8권2호
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• pp.19-26
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• 1989

This study, as a part of integrated human-robot ergonomics, improves the robot motion control on the robot task in the TOES/WCS whose purpose is improving the teaching task constructed in the previous study. First, the updated combined fuzzy process using a new membership function with Weber's law is constructed for the purpose of coordinate reading of the end points in the macro motion control. Second, an algorithm using the geometric analysis is desinged in order to calculate position values and posture values of the robot joints. Third, the MGSLM method is designed to remove unnecessary the robot motion control caused by the GSLM method in the micro motion control. Consequently, proposed methods in this study lessen burdcn of a human of an improvement of the robot motion control and reduce the teaching time of a human operator and inaccuracy of the teaching task, which contribute to the integrated human-robot ergonomics.

• Journal of Oral Medicine and Pain
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• 제23권3호
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• pp.257-261
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• 1998

Angiokeratoma is a cutaneous vascular disorder that occurs at any sites as trunk,extremities, fingers and toes etc. Although solitary or multiple cutaneous lesions have been reported, oral lesions have been very care. A 72-year-old man who had an exophtic, essile mass with dark red, black colored which located on buccal mucosa, was treated with excisional biopsy. He had no specific systemic history except for the medication of allopurinol, for treatment of gout since 10 years. Final diagnosis was determined as angiokeratoma by evaluation of clinical and histopathological finding, and the lesion has not been recurred for two months by decrease of allopurinol. It has been emphasized that the relationship between oral mucosal disease and the complication of allopurinol. Allopurinol is widely used for gout treatment, which we will report a case on the allopurinol-associated angiokeratoma in the oral mucosa.

• 대한한의정보학회지
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• 제14권1호
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• pp.43-54
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• 2008

The term keratosis covers a variety of growths such as warts and pressure-induced callosities. Warts develop in the absence of pressure, and often clear up again after a certain period, usually without treatment. Clavi can develop as a result of wearing poorly fitting shoes, but also deformed toes or other anatomical deformities affecting the foot. The resulting non-anatomical stressing leads to the formation of pressure callosities and even to pressure sores. It confronts hereupon, it searched the cure against the clavus with fructus mume(烏梅) and it arranged. The possibility of getting the result regarding the clavus treatment with fructus mume(烏梅) from the oriental medicine it was.

• 대한핵의학회지
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• 제16권1호
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• pp.73-77
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• 1982

Hypertrophic pulmonary osteoarthropathy classically consists of clubbing of the fingers and toes, periosteal new bone formation in the tubular bones, painful swelling of limbs, arthralgia and arthritis. Its pathogenesis is uncertain, but it is usually associated with malignant or inflammatory intrathoracic disease. We recently experienced a patient with the characteristic findings of this rare disease on bone scintigraphy using $^{99m}Tc-MDP$(methylene diphosphonate).