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安僧燦 대한신경정신의학회 1977 신경정신의학 Vol.16 No.3
The present author had an opportunity of direct clinical participation in the epidemic outbreak of hysteria at Yaechun county, Kyungpook province, June, 1976. The total cases involved in the epidemic numbered 25 girl students (including six recurrent cases) at the age of thirteen to sixteen years. The duration of illness lasted only a few days with no lasting effects, and cardinal symptoms were regularly observed; headache, altered state of consciousness, hyperventilation, paralysis of extremities, convulsive attacks and abdominal pain and numbness As to the sociocultural background of the community, that of Yaechun area has been notified by one of the most conservation in its traditional cultural value system, which is recently superimposed by industrialization process and therefore is rather conflictful in its value system. Another important precipitating factors seemed to be related with a long lasting drought which had been a potent stress to the most residents before the epidemic. In addition there was a climate of unrest in the school due to a construction of new buildings and imminence of term examination at that time. The most marked characteristics of the courses of the epidemic were extreme suggestibility among girl students and strong need for attention-getting. And psychodynamics among patients group could be easily analyzed as positive and negative identification including competitiveness. Lastly, the author was much impressed by the attitudes of the school teachers in managing the patients of the epidemic before and after the outbreak which were considerably misleading due to their own anxiety and misunderstanding of psychiatric illness.
경도 두부손상 환자에서 S-100B 단백질과 위험인자가 뇌전산화단층촬영 시행에미치는 영향
안승찬,류석용,조석진,이상래,오성찬,김홍용 대한응급의학회 2008 大韓應急醫學會誌 Vol.19 No.3
Purpose: S-100B protein is a reliable biomarker of brain injury. The clinical decision rules for screening of a cranial computed tomography (CCT) in minor head injury patients remain controversial. The purpose of this study was to determine whether S-100B protein and risk factors for minor head injury patients can provide meaningful insights to improve initial CCT scanning of patients with MHI. Methods: Fifty patients with MHI were enrolled in this prospective study from July 2007 to September 2007. All patients who fulfilled the following inclusion criteria were enrolled: history of head trauma, initial GCS score of 14 to 15, and one or more clinical findings. Risk factors of patients presented in this study included age younger than 2 years or above sixty years, focal neurologic deficit (FND), post-traumatic seizure, skull fracture, extra-cranial injury, coagulopathy, previous neurologic deficit and ingestion of toxicants (drugs or alcohol). A venous blood sample for assessment of S-100B protein was drawn and a CCT scan was undergone. The reference value of S-100B protein was 0.105 μg/L. All CCT findings were confirmed by radiologists. Results: Of the 50 patients studied, 15 patients exhibited trauma-relevant intracranial lesions on the CCT scan (CCTpositive). The subgroups of CCT-positive and -negative showed no statistically difference in S-100B level (p=0.068). Of the fifty patients, thirteen had no risk factors (RF). However, statistically significant differences were observed in S-100B level when the subgroups were classified into RF-positive and RF-negative groups (p=0.016). The CCTpositive findings of 13 patients with no RF were identified with 100% sensitivity, 54.6% specificity, 28.6% positive predictive value and 100% negative predictive value through assessment of S-100B protein level. Conclusion: In patients with MHI, S-100B protein level and risk factors may give us reliable predictive information prior to CCT screening in emergency department.
안승찬,류석용,이상래,조석진,오성찬,김홍용 인제대학교 2008 仁濟醫學 Vol.29 No.-
Necrotizing fasciitis (NF) is a rare, life-threatening infection resulting in necrosis of the skin, subcutaneous tissue, and fascia. A very severe and usually fatal fasciitis is caused by a virulent species of streptococcus that is often referred to as the "flesh-eating bacteria". Mortality rates have been noted high. Certain conditions can predispose patients to NF, such as diabetes mellitus, immunosuppressive medications, and AIDS. Patients usually complain of excessive pain as well as constitutional symptoms. Because of this rapid progression, it is important to diagnose and treat NF quickly to decrease mortality. Treatment includes broad-spectrum antibiotic coverage, nutritional supplements, hemodynamic support, wound care, and prompt surgical debridement. We report a case of a 51-year-old man who had presented with right hip pain. Previously, he had been diagnosed with diabetes mellitus and alcoholic liver cirrhosis.
안승찬(Seung Chan An),이종석(Jong Suk Lee) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.-
Generally, the refrigeration cycle consists of a compressor, a condenser, an expansion valve and an evaporator. This study deals with performance of a refrigeration system, i.e. coefficients of performance(COP) by changing refrigerant and operating conditions. By using CoolPack, a refrigeration system analysis and design program, it is possible to analyze the refrigeration cycle structure, draw the molliere chart by setting the condensation temperature and the evaporation temperature and easily obtain COP through the refrigeration simulation. Comparison and analysis of the simulation results are presented.