Jung Ho Kang

An important safety factor to be considered when designing a plant is the prevention of overpressure-induced explosions, to which many plants are vulnerable because of pressurized fluids in plant components. A pilot-operated pressure relief valve is a core device for venting off overpressure formed inside vessels and pipelines. The pilot-operated pressure relief valve has a highly complicated structure, and its design and production should be thoroughly studied. In this study, a simplified struc

Glufosinate ammonium (GLA) is widely used as a commercial herbicide in many countries. Neurotoxicity of GLA has been associated with serious neurological complications such as loss of consciousness, convulsions, and memory impairment. Late-onset memory impairment due to GLA-induced hippocampal lesions is the most distinct clinical feature in GLA poisoning. However, the lesion of the splenium of the corpus callosum (SCC) is a rare condition in GLA poisoning, so the clinical features are not well

Sclerosing encapsulating peritonitis (SEP) is characterized by the partial or complete enclosing of the small intestines by a thick fibro-collagenous membrane, which can cause recurrent intestinal obstruction. SEP is a clinically rare disease, and the major risk factor is peritoneal dialysis (PD). Early diagnosis of SEP is an important factor in the patient's prognosis, but it is clinically difficult. A 52-year-old woman visited the emergency department (ED) with a 2-day history of abdominal pai

The pharmacokinetic properties of transdermal nicotine patches (TNPs) are different from those of other routes of nicotine administration; further, acute nicotine poisoning by TNPs may present with different clinical features. In the present report, we describe the case of a 23-year-old woman who was admitted to emergency department (ED) at Jeju National University Hospital with loss of consciousness. Five hours before the ED visit, she used multiple TNPs to attempt suicide. Initially, nausea an

본 논문은 고분자 전해질 연료전지에서의 전극 침수(electrode flooding) 현상에 대한 이해와 물 관리의 개선을 목표로 전극을 구성하는 소수성 다공 전달층(PTL) 내부에서 물의 모세관 전달 과정을 연구하였다. 공극 크기가 상이한 미세 다공층(MPL)과 기체 확산층(GDL)으로 구성된 다공 전달층에서의 물의 미세 전달 현상을 해석하기 위하여 정상 상태 다층(multi-layer) 공극 네트워크 모델을 개발하였다. 또한, 다공 전달층 내의 정상 상태 수분 포화도가 얻어진 이후 물이 포함된 공극 네트워크를 통한 기체확산 계산이 추가적으로 수행되었다. 해석 결과는 미세 다공층의 두께가 증가함에 따라 활발한 모세관 핑거링(capillary fingering)에 의해 물 전달 경로의 병합이 용이해지며 그 결과로 미세 다공층에서의 물 배출(breakthrough) 지점의 개수와 기체 확산층에서의 물의 체적 함량이 감소함을 보여주었다. 또한, 다층다공 전달층에서 최대 확산량을 얻기 위

Farmers' injuries are more frequent and severe than those in the other job groups. To identify the characteristics of agricultural injuries in Jeju, 119 first aid records and emergency department based injury surveillance system data for four years were analyzed retrospectively. Farmers' injuries in 119 first aid records were 1,947 cases, and mean age of injured patients was 63.9±11.8 years. The proportion of major trauma was 27.4%. The more frequent months of farmers' injuries were from August

Elevated intracranial pressure (EICP) is important cause of the mental change. Recent studies by using ultrasound show that optic nerve sheath diameter (ONSD) increase in the patients with EICP. We compared the diameter of optic nerve sheath and mass effect in the magnetic resonance image(MRI). In the T1 weighted image, we measured the optic nerve sheath diameter at the 3 mm posterior of eye glove. 31 patients were involved. 14 patients showed mass effect and were suspicious of EICP. 17 patients

Abstract not Available.

기관지성 낭종은 일반적으로 폐실질 내 혹은 종격동 내에 발생하는 것으로 알려져 있다. 종격동 내에 위치하는 경우 기관지와 식도 부근에 위치하나 식도에 함몰되어 있는 경우는 매우 드물다. 수술 전에 기관지성 낭종과 식도 낭종을 구분하는 것은 매우 어려워 식도 양성 종양으로 의심하고 수술을 시행하게 된다. 저자들은 우연히 발견된 식도 내 종양이 수술 절제를 통해 기관지성 낭종으로 밝혀져 보고하는 바이다.