http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
지하주차장 내 전기자동차 화재의 소방시설 적응성 분석을 위한실규모 소화 실험
고병용,유선화,최대현,한국일 한국화재소방학회 2024 한국화재소방학회논문지 Vol.38 No.2
최근 국제 환경문제 심화와 국내 친환경 정책 등으로 전기차 등록대수가 급격하게 증가하고 있다. 전기차 증가와함께 화재 발생 건수도 증가하는 추세이나, 전기차 화재 진압 실험 외 화재 위험성 분석을 위한 실규모 실험이나현재 적용된 소방시설의 적응성에 대한 검증 연구가 부족한 상황이다. 본 연구에서는 지하주차장 내 전기차 화재에따른 소방시설의 적응성 분석을 위해 기존 건축물에 적용된 소방시설 조건을 고려하여 전기차 화재에 대한 소화 실험을 수행하였다. 소화 실험은 2단계로 구분하여 진행하였으며, 1단계에서는 현 기준에 따라 상부 주수 스프링클러만을 적용하였으며, 2단계에서는 기존 상부 주수 스프링클러에 하부 주수 시스템을 추가로 적용하여 수행하였다. 실험 결과, 1단계에서는 전기차 배터리 팩의 열폭주 지연 방지는 어려우나, 인접 차량간 화재 전이가 이루어지지 않음을 확인하였으며, 2단계에서는 전기차의 배터리 팩 열폭주가 약 50%만 이루어졌음을 확인하였다. 1, 2단계 실험결과상부 주수만으로도 인접 차량으로의 화재 전이는 차단 가능성이 있음을 확인하였다. Recently, the number of electric vehicles (EVs) has rapidly increased owing to an increase in international environmentalproblems and domestic eco-friendly policies. With the increase in the number of EVs, the number of EV fires is alsoincreasing. However, full-scale experiments for fire risk analysis or verification studies on the adaptability of presentfirefighting facilities are lacking , except for EV fire suppression experiments. In this study, to analyze the adaptability offirefighting facilities to EV fires in underground parking lots, fire extinguishing experiments on EV fires were conductedby considering the conditions of firefighting facilities applied to existing buildings. The first experiment simulated a currentunderground parking sprinkler system (pre-action system). In the second experiment, a lower sprinkler system was addedto the upper sprinkler system. Experiment #1 confirmed that preventing the spread of thermal runaway in EV battery packswas difficult but blocking fire spread to adjacent vehicles was possible. Experiment #2 confirmed that thermal runawayoccurred in approximately 50% of EV battery packs. These experiments concluded that fire spread to adjacent vehiclescould be blocked by the spray from the upper sprinkler system.
광노화 병변의 유병률 조사 및 단일성과 다발성 광선각화증 환자들의 특성 비교: 환자 61명에 대한 후향적 연구
고병용 ( Byoung Yong Koh ),명기범 ( Ki Bum Myung ),한형진 ( Hyung Jin Hahn ),정승현 ( Seung Hyun Cheong ) 대한피부과학회 2017 大韓皮膚科學會誌 Vol.55 No.9
Background: Photoaged skin is characterized by actinic skin lesions such as wrinkling, elastosis, and premalignant and malignant lesions. Actinic keratosis (AK) is one of the most common precancerous lesions, and multiple actinic keratosis lesions are one of the risk factors for skin cancer. Few studies have investigated the prevalences of actinic skin lesions and compared the characteristics of the lesions and the patients with sinle and multiple AK lesions. Objective: The aim of this study was to evaluate the prevalences of actinic skin lesions and to compare characteristics between single and multiple lesions in Korean patients with AK. Methods: We retrospectively reviewed the medical records and biopsy specimens of 61 patients. Results: Frequencies of deep wrinkle, solar elastosis, cutis rhomboidalis nuchae, and senile purpura were higher in the multiple lesions group. The ratio of males to females was 1:3.43 and the mean age was 79 years in the multiple lesions group, both of which were higher than those in the single lesion group (1:1.14, 72 years). The mean duration was longer in the multiple lesions group. Sun protective behavior was more frequent in the single lesion group, and the occupation of farmer was more common in the multiple lesions group. There was no statistically significant clinicopathological difference between the two groups. Conclusion: This study may improve our understanding of the characteristics of actinic keratosis with both single and multiple lesions. (Korean J Dermatol 2017;55(9):580∼587)
고병용 ( Byoung Yong Koh ),권은선 ( Eun Sun Kwon ),이경근 ( Kyung Geun Lee ),명기범 ( Ki Bum Myung ),정승현 ( Seung Hyun Cheong ) 대한피부과학회 2017 大韓皮膚科學會誌 Vol.55 No.10
A patient with nevus sebaceous showing linear or wide distribution can present with a triad of nevus sebaceous, seizures, and mental retardation. Most of those cases are classified as sebaceous nevus syndrome. Ophthalmological, skeletal, and other abnormalities may also be present. A male weighing 3,580 g was born at the gestational age of 38 weeks after a normal pregnancy. He was referred to the dermatologic department on the first day of life. He presented with yellow-orange and verrucous plaques on both sides of the temporal areas, face, neck, upper and lower extremities, and trunk. Skin biopsy specimens were taken from the scalp and right lower leg. Histologically, both specimens showed sebaceous gland hyperplasia, absence of mature hair follicles, infundibular cystic structures, and apocrine glands. Brain magnetic resonance imaging, transthoracic echocardiography, abdomen ultrasonography, and routine laboratory investigations were performed and showed nonspecific findings. The patient did not show seizure activity at 19 days of observation, and he is now on close observation. We herein report a very rare case of systematized nevus sebaceous presenting at birth. (Korean J Dermatol 2017;55(10):694∼697)
관절질환 환자에 있어서 혈청내 뇨산(尿酸)치의 분포에 관한 연구
정인희,박병문,고병용 中央醫學社 1975 中央醫學 Vol.29 No.6
Galen still states that gout is rare amongst Asians and that it is more common amongst beer drinkers and people whose living standards are high. It is interesting to note, the recent estimate by Grayzel, that 17% of normal male subjects would be expected to have values above 6.0mg% and 16% of normal female subject values above 5.0mg%. In a recent study 30% of 737 patients seen at a rheumatic-disease hospital were found to have serumurate levels greater than 6mg%. There is very great confusion about normal values of serum uric acid. There is no standardisation on an international basis. It is frequently stated that serum uric acid values greater than 6.0mg% in male subjects, or greater than 5.0mg% in female subjects, constitute hyperuricemia. 100 cases of joint disease, admitted to the Orthopedic Department of Severance Hospital during the period from March 1974 to May 1975, were studied. The serum uric acid determinations were undertaken in order to define the distri?bution characteristics of serum uric acid in joint disease in Korea, and to evaluate the importance of age and sex. The results are summarized as follows: 1) Sex incidence showed male 45% and female 55%. 2) The prevalent age groups in joint disease were 40 to 49 years of age in male patients and 50 to 59 years of age in female patients. 3) Serum uric acid levels in joint disease was not so high as compared with the normal subjects in the foreign countries. 4) The mean concentration for 100 subjects of both sexes was 4.5±0. 815 S. E. mg%. 5) Male subjects, of whom there were 45, had serum uric acid values ranging from 3.2 to 11.9mg% with an arithmetic mean of 5.70 mg% and a standard error of 0.27mg%. Female subjects, 55 in all, had serum uric acid values ranging from 1.5 to 7.3mg% with an arithmetic mean of 3. 6Orng% and a standard error of 0.17mg%. 6) The mean difference between mean values in male and female subjects was about 2. lmg%. 7) 37.8% of all male subjects were found to have values of 6.0mg% or greater. 12.7% of all female subjects were found to have values of 5.0mg% or greater.