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응급실에서 급성 췌장염 환자의 선별을 위한 actim Pancreatitis 검사의 유용성
송석훈(Seok Hun Song),도병수(Byung Soo Do),이삼범(Sam Beom Lee) 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4
Background: Acute pancreatitis is a fairly common abdominal disorder that can be easily confronted in the emergency department (ED) and is one of the most complex and clinically challenging of all abdominal disorders. Currently, there is no gold standard for the diagnosis of acute pancreatitis. We evaluated the usefulness of the actim PancreatitisR rapid test, which has been recently developed in Europe, as a screening test of acute pancreatitis in our emergency department. Methods: We prospectively studied the urinary trypsinogen-2 dipstick tests (actim PancreatitisR , Medix Biochemica, Kauniainen, Finland) of 200 patients with acute abdominal pain who were treated at our ED. All urine samples were collected from the patients within 12 hours of arrival at ED. We also measured serum amylase assay in the laboratory and compared the sensitivities and the specificities of the two test. Acute pancreatitis was diagnosed by authors according to standardized criteria. Abdominal USG or CT was performed when a patient with a normal serum amylase level had a typical clinical presentation. Results: The actim PancreatitisR rapid test was positive in 22 of the 25 patients with acute pancreatitis (sensitivity, 88.0 percent). The test was also positive in 6 of 175 patients without pancreatitis (specificity, 96.6 percent). The serum amylase assay had a sensitivity of 68.0 percent (with a cutoff value of 300 U per liter for the upper reference limit) and a specificity of 90.9 percent. But there were no statistical differences between the correlation coefficients of the two tests as diagnostic tool. Conclusion: In patients with acute abdominal pain who are seen in the emergency department, the actim PancreatitisR urinary dipstick test has a high degree of probability as a screening test for acute pancreatitis. Also it can easily and rapidly be use at the bedside.
지중케이블 접속재 열적 안정화를 통한 PD개선에 관한 연구
송석훈(Seok-hun Song),김병조(Byung-jo Kim) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.7
특고압 지중케이블의 연결시 사용하는 접속재는 특고압의 전기를 보호하고 있기 때문에 높은 절연특성 및 장기적 전기 스트레스에 강한 특성을 가지도록 고신뢰도의 재질 및 구조와 시공품질을 요구한다. 한국전력에서는 이러한 지중케이블 접속재의 안정적 운영을 위해 2015년부터 VLF내전압시험과 PD(Partial Discharge, 부분방전) 진단을 통한 설비진단을 본격 도입하여 접속재 불량고장을 사전에 예방하고 있다. PD진단은 접속재의 구조적 결함과 시공불량을 효과적으로 검출할 수 있는 장점이 있어 실제 시공현장에서 널리 사용되고 있으나 시공초기에 측정 시 접속재 미안정화에 따라 PD수치가 높게 측정되는 경향이 있다. 본 논문에서는 특고압 접속재를 시공초기에 열적으로 급속 안정화시켜 시공초기의 PD측정의 정확성을 제고하는 진단방법에 대하여 고찰하고자 한다.
가스유해성 평가방법에 따른 유기단열재의 연소특성에 관한 연구
심지훈 ( Ji-hun Shim ),이재걸 ( Jae-geol Lee ),한경호 ( Kyoung-ho Han ),김주완 ( Ju-wan Kim ),송석훈 ( Seok-hun Song ),조형원 ( Hyung-won Jo ),윤도영 ( Do-young Yoon ) 한국화학공학회 2022 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.60 No.4
Domestic building finishing materials are being evaluated according to KS F 2271 standards according to the notification of the Ministry of Land, Infrastructure and Transport, and this test is evaluated using laboratory animals. In this study, experiments were conducted on highly combustible organic insulation materials such as EPS, urethane, and phenolic foam. The purpose of this study was to analyze the cause of the behavioral suspension of the experimental mice by measuring the average behavioral suspension time of the mice caused by the harmful gas generated when these three types of insulation materials were burned. FTIR analysis and smoke density experiment were performed as a cause analysis method for the behavioral suspension of mice, and the experimental results were analyzed by dividing the causes of behavioral suspension into suffocation by particulate matter and toxic inhalation by gaseous substances. As a result of the test, urethane was evaluated as the most harmful insulation material, and as a result of FTIR analysis and smoke density test as a cause analysis for the gas toxicity test results, it is judged that the behavioral stop of the rats by suffocation is higher than the effect of toxic inhalation. This study is a basic study on the cause analysis of harmful gases, and it will be necessary to prepare the toxicity basis and analyze various materials and gases.