소형 펀치 시험법을 이용한 P92강의 크리프 거동 특성 평가

박문희,임병수 成均館大學校 科學技術硏究所 2002 論文集 Vol.53 No.1

Recently, as the number of high temperature components that are being used under high pressure and temperature is increased, the need for the materials with better properties at high temperature has been increased also. As the result of the effort to satisfy such need, a lot of new high temperature materials with better thermal efficiency and economy have been developed. P92 steel is one of such newly developed piping material for high temperature usage. In this study, the creep behavior of P92 steel is investigated by small punch creep test method at 600℃, the actual operating temperature in the power plant facilities. The creep characteristics were investigated using 3 different type of materials taken from the Base metal, Weld metal and Heat affected zone of P92 steel that has been exposed to the welding process.

리튬이차전지용 부극재료로서 은분말에 대한 전기화학적 특성

박철완,도칠훈,문성인,윤문수 한국공업화학회 2003 응용화학 Vol.7 No.2

Silver powders have been extensively studied as an anode active material for lithium secondary batteries. In the present study, a unique attempt is made to develop silver negative electrode by slurry method, because the silver electrode is a good candidate to replace the commercial graphite electrode for lithium rechargeable batteries. Silver electrode was prepared and its electrochemical properties were characterized gradual increasing test state of charge (GISOC) analysis method. Charge-discharge performance indicates that the initial charge potential range of Li/Ag cells has showed similar behaviors compared with Li/Graphite system and the irreversible capacity facd is also higher than Li/Graphite system.

수질보전을 위한 영산강 유역의 TMDL 결정에 관한 연구

박성천,노문수,김용구 동신대학교 환경연구소 2004 환경연구 Vol.9 No.1

In the present study, the Total Maximum Daily Load (TMDL) was introduced to the Young-San river basin for the multipurpose expansion of the aquatic-ecosystem recovery and the water resource utilization of the Young-San Lake. For the methodology, the Young-San river basin was divided into 12 sub-basins in which point sources and non-point sources were investigated. The representative stations from the Young-San river were selected to estimate the hydraulic coefficients (a, b, alpha, beta) of the respective stations using HEC-RAS Model with the profile data from 『Ministry of Construction and Transportation, 1998』 Water quality prediction was performed by the QUAL2E Model with the input data from the water-stage network data of the Young-San River Flood Control Office and the water quality network data of the Young-San River Basin Environment Office. Based on the results from the water quality prediction, TMDLs for the respective sub-basins were proposed so as to fit the target water quality which was estimated in the river channel by the reduction of load.

2급 응급구조사의 성인외상환자에 대한 처치의 적절성 평가

장문수,어은경,김상현,김창섭,송근정,박한규,유지영,최동섭 대한응급의학회 1995 대한응급의학회지 Vol.6 No.2

In Korea, EMT have two classified subgroup of first and second degree : EMT-P, and EMT. For the beginning, authorization of the first EMT was made in this year through the EMT educational program. There are 8 items which EMT can perform the treatment without the supervision by a physician. But there was no previous report of pertinent assesment of treatment performed by the EMT. There upon authors have conducted review of assessment done by the EMT in EC setting, and proposed the following treatment application can be used by EMT at the field of accident. The study materials include adult trauma patient older than 15 years, and sustained trauma within 48 hours before visiting Ewha University DongDaeMoon Hospital Emergency Deparment. The duration of study was from Apr. 1 1995 to Aug. 31 1995. the study was conducted by 5 certified EMT. The EMT's performance was evaluated by the attending Emergency Medicine physician. The result were as followings ; 1. Among the total 5532 ED visiting patients during the study period, 1267 were adult trauma patients who recieved treatment within 48 hours of injury. 2. Among 1222 out of 1267 patients have completed performed survey. 3. Male to female ratio was 2.6 : 1, age distribution was from 15 to 87 years old and mean age was 34.6 years old. 4. The MOI showed : MVA (33.1%), blunt trauma (29.9%), slip down (16.8%), penetrating injury(15.4%), and miscellaneous (5.7 %), burn (3.1%), falling down injury(2.9 %), bite injury(1.1%) in order. 5. There were 437 cases of survey completed by the EMT. For assessment of mental status of 3 different method : AVPU, 5 scale mental status and GCS, were correlated with EM physician with 99.1%, 98.6%, 97.7 %, respectively. 6. For 320 out of 437 cases of survey completed, 319 patients recieved treatment by the EMT within 30 minute and 1 patient between 30 to 60 minute of an ED arrival. 7. For those 437 cases of survey completed, 266 patient (60.9%) had adequate treatment and 54 patients (12.4%) had inadequate treatment. 67 patient (15.3%) did not received treatment but it was adequate inway, and 50 patients (11.9%) did not received treatment even though patient required treatment. In cases of adult trauma patients, EMT's mental status assessment was correlated with EM physician's assessment. But treatment done by EMT without the supervision of EM physician was adequate only in 76.2 %. Therefore, continuous education and assessment of treatment performed by EMT in needed to improve field treatment by EMT future.

리튬-필로카르핀으로 유발된 경련중첩증 흰쥐에서 뇌량절개술의 효과

전신수,홍용길,박춘근,김문찬,최창락,강준기 대한신경외과학회 1999 Journal of Korean neurosurgical society Vol.28 No.5

남성소비자들의 상표충성도와 쾌락적ㆍ효용적 의복가치

서문숙;김건수;박재옥;이규혜 한양대학교 2007 韓國 生活 科學 硏究 Vol.27 No.1

Many recent research reported that men, different from the past, want to represent their individualities through clothing and become important shoppers. The market for men is gradually extended. In this study, a well known relationship between clothing values and brand orientation were tested for male consumers. Data from 334 adult male consumers living in a metropolitan area were collected and analyzed. Results indicated that male consumers with various demographic characteristics such as age, marital status, income, and clothing expense showed different level of clothing values. Regression analysis results indicated that among hedonic clothing value factors, confidence in clothing and fashion orientation had significant influence on brand loyalty. Among utilitarian factors symbolic values expressed through clothing had a strong influence on brand loyalty of male consumers.

질화 분위기에서 결정화 된 Fe_(73.5)Si_(13.5)B_(9)Cu₁Nb₃ 연자성 합금의 자기적 성질

이기선,박인수,이기안,김문철,장석훈 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.11

Amorphous Fe_(73.5)Si_(13.5)B_(9)Cu₁Nb₃ alloy was crystallized in nitriding atmosphere of mixture gas of NH₃ and hydrogen. The crystallization at 823K showed the high electrical resistivity ranging from 494 to 538 mW-cm, which was higher level compared with nano-crystalline Fe_(73.5)Si_(13.5)B_(9)Cu₁Nb₃ alloy with a resistivity of about 110 mW-cm. Through the nitridation treatments, the amorphous alloy was transformed into nano-sized crystalline Fe3Si including iron nitrides such as γ' -Fe₄N phases. EPMA-concentration depth profiles confirmed an existence of nitrogen-rich region on the surface of the alloy ribbon, leading to the preferential formation of g -Fe4N phase. The formation of γ' -Fe₄N phase leaded to an increase of the resistivity and provided stable permeability and a low core loss at high frequency.

日本의 人文·社會科學 硏究動向 調査

李注衡,朴仁熙,韓點洙,金文基,朴晋泰 慶北大學校 1983 論文集 Vol.36 No.-

In January 1983, the writer visited a few universites in Japan to survey the recent trend of studies in cultural and social Sciences. At that time what I researched is as follows; In Japan, many a learned society has been organized and the research activities were very lively. Mass publication of scientific periodicals and prompt translation of foreign writings showed the maturity of scientific atmosphere. It true that their study of literature has been performed on the basis of positivism since 1930'. But now Structuralism which consider's literary works as one organic unity of parts became the main basis of literary studies. And, Learned Society of Educational Law has been organized in Japan. In consequence, the level of researches in educational law could be remarkably high. So, it is necessary for us to study the law of education. For, to make it better, we must know not only the universal principles of education but also specific ones derived from the peculiar characteristics of Korean education. At the same time, in Japan, Department of the Law of Industrial Administration was established in 14 universities including Japan University. And with the help of it, companies could improve the efficiency in dealing with judicial affairs related with industrial administration. So, to be a winner in the international trade competition, it is also required for us to study the judicial affairs of industrial administration.

인라인 스케이트 이용자들의 손상 유형과 위험 요인

서혜경,문지영,성주욱,김말영,이준호,박정이,차성화,백나영,이재민,김수민,임현술,정해관,배근량,정철 東國大學校醫學硏究所 2004 東國醫學 Vol.11 No.2

지난 몇 년 사이 인라인 스케이트는 젊은층을 중심으로 인기있는 스포츠가 되었으며 이러한 대중화와 더불어 인라인 스케이트와 관련된 사고 빈도도 증가하는 추세이다. 따라서 본 연구는 인라인 스케이트 이용에 따른 사고율과 이용습관 형태, 손상 유형 및 위험 요인을 알아보고자 시행되었다. 2003년 9월 14일부터 9월 24일까지 경주시 ○○초등학교 6학년, ○○중학교 1학년, ○○여자고등학교 1학년, ○○고등학교 1학년, 동국대학교 의과대학 의학과 학생, 경주황성·포항 해맞이 공원의 성인을 포함한 총설문 대상자 1,305명 중 인라인 스케이트 이용자 392명을 대상으로 단면 연구를 수행하였다. 조사에 앞서 병원 방문과 사전 조사를 시행 하였으며 자기 기입식 설문지를 통해 정보를 수집하였다. 초, 중, 고 인라인 스케이트 전체 이용률은 28.1% 사고율은 30.1%로 나왔으며 주로 젊은층에서 사고가 많았으며 나이가 증가할수록 빈도가 증가하였다. 보호 장비 착용률은 44.4%로 조사되었다. 손상 부위로는 무릎과 상지 부위가 많은 것으로 조사되었으며 손상 유형은 찰과상과 타박상이 많았다. 스케이트를 타기 시작한지 1개월 이내에서 사고를 가장 많이 당한 것으로 나타났다. 전체 부상자의 20%가 후유증이 있었던 것으로 나타났다. 본 연구에서 인라인 스케이트 이용자들의 사고율이 비교적 높음을 알 수 있었다. 손상 부위의 무릎 및 상지 집중 현상으로 인해 무릎과 상지 부위의 보호대 착용이 필요할 것으로 생각되며 또한 사고를 줄이기 위해 초기 기술 습득 단계부터 전문가를 통한 체계적 교육과 안전 의식 고양이 필요할 것으로 보인다. In the past several years, Inline skating has become a popular sport among young people. With popularization of Inline skating, the number of injuries has increased proportionately. The purpose of this study is to evaluate the prevalence of injuries, the behaviors of skating, the nature and risk factors of injuries. We conducted a questionnaire an 1,305 subjects from Sep. 14 to 24, 2003. The Inline skaters were 392. These participation were mainly students from ○○elementary school, ○○middle school, ○○women's high school, ○○high school, Dongguk medical school, and adult skaters in several parks. The prevalence of injuries were 30.1%. Injuries were predominant from younger age and frequencies were increased according to increasing age. The most common location of injuries were both knee and the upper extremities. Most of injury type were skin abrasion and contusion. Injuries were highest within one month after First skating. 20% of injuries experienced a sequela. The results of this study show the severity of Inline skating-related injuries. We expect that the knee and the upper extrimities protectors should be used adequatly. Also to reduce injuries, when the skills are obtainded, the specilized learning programs and safety awareness are needed.

동물과 사람유래 Vancomycin 내성 장구균의 항균제 감수성 비교

조윤상,이희수,김종만,류판동,박용호,유한상,이문한 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.1

It has been recently reported the possibility in the bansfer of antimicrobial resistance to other animals and humans. In particular, vancomycin resistant enterococci (VRE), which have been known as a principal antimicrobial resistant bacteria in humans, have been increased as a pathogen of nosocomial infections. And then animal VRE were suspected as an origin of human VRE. In this study, we isolated Enterococcus spp. from animals, identified by bio- chemical tests, examined for antimicrobial susceptibility, and then compared the antimicrobial susceptibility of VRE among each other as well as human VRE. Enterococcus iecium (29%) was predominant in Enterococcus species (n=122) isolated from animal feces in this study. E. hirae, E. iecalis, E. casseliflam and E. gallinarum were also isolated as rates of 24%, 21%, 16% and 7%, respectively. The resistance of enterococci to penicillin and tetracycline were 66% and 78%, respectively, and the susceptibility of them to chloramphenicol was 66%. Antimicrobial susceptibility test has shown that 91% of VRE from humans (n=11) was susceptible to chloramphenicol and all resistant to penicillin, rifampin and streptomycin. Seventy-five percentage of VRE from chickens (n = 12) was susceptible to rifampin and resistances of them to penicillin, tetracycline and sbeptomycin were 75%, 83%, and l00%, respectively. Therefore, we confirmed the difference of antimicrobial susceptibility from animals and humans, and the antimicrobial susceptibility test could be one of the simple and useful methods for the epidemiological survey of VRE.