Stevens-Johnson 증후군: 증례보고 및 문헌고찰

여환호,김영균,서재훈 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.1

The Stevens-Johnson syndrome is a severe form of erythema multiforme associated with multiple organ involvement that can result in severe mortality. There are many etiologic factors including drugs, infection, or stress ; but accurate pathogenesis is still obscure. Treatments are composed of the removal of possible etiologic factors, symptomatic and supportive treatment. We experienced a case of Stevens-Johnson syndrome with involvement of generalized skin, oral mucosa, and eye involvement. This patient was treated by symptomatic and preventive method including corticostervid, antihystamine, and opthalmic treatment.

우리나라 科學敎育의 변천 : 日本 과학교육 변천과 비교

呂煥鎭,朴順子 경북대학교 과학교육연구소 1989 科學敎育硏究誌 Vol.13 No.-

Our country's scientific education was based bringing up technicians. Before the more civilized form of education, in the Silla, Backje, and Kokuryo time period people studied arithrmetic, astronomy and medicine in every government office. After the coming of a modern education the Japanese controlled every part of the education system in Korea, including physics, chemistry, science and natural history. During the Japanese dictatorship, science was taught merely to get a job. All that was taught was the use of machines, which had a little to do with scientific items. In the transitional period science education was based on subject centered curriculum. In elementary school they taught social studies and science. In a secondary school they studied syllabus. In the first curriculum, science education was experience centered curriculum. In elementary school it was nature, middle school it was science, and high school you had a choice between physics, chemistry, biology, and earth science. In the second curriculum they were studied biology Ⅰ, earth science, physics Ⅰ, chemistry Ⅰ in civic science course. There were also biology Ⅰ, earth science, physics Ⅱ, chemistry Ⅱ, and biology Ⅱ in the science course that was absolutely neccesary. The third curriculum was discipline centered curriculum. It was Characterized by a general idea of the structure, widening of inquiry competency, and a widening to the attitude. In civic science course you were to choose between physics, chemistry, biology and earth science, while in the science course all of those had to be required. The fourth curriculum emphasised on an affective field more than the third curriculum. In the first grade of elementary school they taught wise living, in middle school the fields physics, chemistry, biology, and earth science was taught. In civic science course there were physics I, chemistry Ⅰ,biology Ⅰ, and earth science Ⅰ. In science course every part the sciences, Ⅰ and Ⅱ were taught. In the fifth curriculum grades 1 and 2 of elementary school studied wise living in civic science course science Ⅰ and science Ⅱ was taught and in science course science Ⅰ, physics and chemistry were required subjects and between biology and earth science they were taught one. In 1958 American science gradually moved toward Japanese science education. In middle school they divided science into two parts and in high school physics, chemistry, biology, and earth science were required. In 1968 Japan's science education based a lot on fundamental concepts of science. In high school basic science was instituted and you chose two subjects between physics Ⅰ·Ⅱ, chemistry Ⅰ·Ⅱ, biology Ⅰ·Ⅱ, earth science Ⅰ·Ⅱ. In 1977 Japanese science education was to regain humanity. In high school there were science Ⅰ and Ⅱ. But science Ⅰ was absolutely required. In 1988 Japanese Science education was characterized by the education of the respect of individuality. In grades Ⅰ·Ⅱ of elementary school wise living was taught. In the third grades of middle school there was more freedom in what they wanted to study. In high school total science, physics, chemistry, biology, and earth science was studied in every portion and students chose between ⅠA ⅠB and Ⅱ.

상위인지 전략훈련이 독해부진아의 독해력과 자기효능감에 미치는 효과

여광응,박현옥,최환석 한국특수교육문제연구소 2003 특수교육저널 : 이론과 실천 Vol.4 No.4

독해는 특정 교과에 한정되는 교과 활동이기보다는 모든 교과학습의 기초이기 때문에 초등학교 아동의 독해학습부진은 반드시 해결해야 할 중요한 과제이다. 기존에는 독해력 결함의 원인을 주로 상징과 소리 협응에 대한 법칙학습 장애나 시지각 장애로 귀착시켰으나, 최근에는 정보처리 과정상의 결함 내지 읽기에 관한 배경지식의 결함과 글을 읽고 이해하는 데 필요한 상위인지 전략의 선택 및 활용 부족을 원인으로 보는 경향이 유력하다. 이 연구는 상위인지 전략훈련(자기교시 전략훈련과 자기조절 전략훈련)이 초등학교 고학년 독해부진아의 독해력 향상과 유지, 자기효능감에 미치는 효과를 밝히기 위한 것이다. 연구 결과, 상위인지 전략훈련은 독해부진아의 독해력 향상과 유지에 긍정적인 영향을 미쳤으나, 자기효능감의 경우 양 집단 모두 뚜렷한 효과를 보였으나 양집단 간에는 효과의 차이가 나타나지 않았다. Recently, the strategy training for learning disabled children is widely applied so that learners themselves can set up self-planning, self-monitoring and self- evaluation, self-instruction and self-regulation strategy training methods that are based on the explicit instruction have proved their effectiveness. The purpose of this study is to compare the effect of self-regulation and self-instruction training methods for reading-comprehension on poor reader, and to investigate the improvement of the perception of self-efficacy for reading- comprehension of the children. In order to accomplish this purpose were 4th, 5th, and 6th graders of registered two primary schools within Daegu and selected 48 students who are delayed more than 1.5 year in their reading comprehension ability by the Reading Ⅱ(Reading Comprehension Test) of the fundamental learning ability test(by Park, Kyong-sook and others, 1985) and they were divided into two groups by 24 children at random. The children were randomly assigned to three conditions of self-regulation strategy training, self-instruction strategy training. The experimental group subjects were trained by two teachers at each experimenting school for 30 minutes, 5 times a week for 20 times in all by utilizing the self-study hours in the morning and lunch time. The following conclusion were obtained from the results and discussions of this study: First, the self-regulation and self-instruction strategy training is effective. The expected improvement of reading-comprehension ability of the self-regulation strategy training is higher than that of the self-instruction strategy training. Second, the effect of the self-instruction strategy training and the self-regulation strategy training is transferred to the effect maintains. The expected improvement of reading-comprehension ability of the self-regulation strategy training is maintained for a long time. Third, a relationship is revealed between the methods of the self-regulation and self-instruction strategy training is transferred to the improvements of self-efficacy for reading comprehension.

금속사출성형에 의한 중합금 소결체 부품 제조에 관한 연구

여환균,김병진,김길수,김성훈,송준호,한관희 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.2

In this study we demonstrate that a small complex part of a tungsten-based heavy alloy (W-Ni-Cu) can be readily manufactured by utilizing the metal injection molding (MIM) technology. We use a simple thermoplastic binder system, containing low density polyethylene, paraffin wax, and stearic acid. To remove the organic binder from the molded part, we employ the solvent extraction and thermal debinding processes. Densification of debound parts is achieved by sintering in hydrogen atmosphere. The experimental results of the optimization of process variables to manufacture the heavy alloy part are described, with a brief discussion.

大學新入生의 化學의 基礎知識에 對한 調査硏究

呂煥鎭 경북대학교 과학교육연구소 1979 科學敎育硏究誌 Vol.3 No.-

有機및 無機發癌物質의 化學發癌性에 對한 分子軌道論的 硏究

呂煥鎭 慶北大學校 1981 論文集 Vol.31 No.-

The formation of a loosely bound molecular complex between chemical carcinogen and a cellular component was showned to be first step of Carcinogenesis. Assuming that some positions in the carcinogenic molecule play an important role in forming the molecular complex, the electron distribution of several organic precarcinogens and their metabolites was examined by means of HMO method. The results showed that the ability of accepting electrons at the two carbons of K-region and the atom of L-region in proximity of K-region increases with the proceeding of the metabolism that is in order of precarcinogen, proximate carcingen, ultimate carcinogen charged positively. Accordingly, the first step of Carcinogenesis is considered to be essential the formation of a positive ion as the result of metabolism. From this point of view, an attempt has been made to account for the carcinogenic activity of inorganic elements. It has been found as the result of comparison with experiments that a quantity named "excess polarizing strength" is qualified as good measure to predict the carcinogenic activity of inorganic elements. All elements which is above 0.22 in the value of "excess polarizing strength" have carcinogenic activity. The unified interpretation of the carcinogenicity of both organic compounds and inorganic elements may be possible on the assumption that the formation of molecular complex between a carcinogen and a cellular component is essential to the formation in the metabolism of positive ion in the body as an ultimate carcinogen.

매복된 하악 제3 대구치 발치시 항생제 투여의 효용성

여환호,박주철,정종훈,강태호 大韓顎顔面成形再建外科學會 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.4

To evaluate the efficacy of antibiotic administration in the impacted mandibular third molar extraction the author investigated 107 patients requiring extraction of the lower third molar who visited at the Department of oral and maxillofacial Surgery. Chosun Dental Hospital and were healthy without medical problems and had no signs and symptoms of infection around the lower third molar. The patients were divided into 4 groups according to the method of antibiotics administration : 13 patients without antibiotics administration(group 1), 30 patients with only intravenous injection of Cefazoline 2.0g 30 minutes before the procedure(group 2), 39 patients with intravenous injection of Cefazoline 2.0g 30 minutes before the procedure and oral administration of follow-up dosages of Augmentin for 1 day(group 3), and 25 aptients with intravenous injection of Cefazoline 2.0g 30 minutes before the procedure and oral administration of follow-up disages of Augmentin for 3 day(group 4). Infection rates after extraction wer calculated and compared according to gender, the age of the patients, the level of impaction, and also compared between four groups. The results were as follows. 1. The overall infection rate was 8.4%. 2. The infection rate was higher in male(11.9%) than in female(4.2%), but there were statistically no significant differences between them. 3. Infection rate was lower in patients under age 30(7.2%) than in patients over age 30(12.5%), but there were statistically no significant between them. 4. Infection rate was higher in patients with complete bony impacted tooth(11.1%) than in patients with partial bony impacted tooth(6.5%), but there were statistically no significant differences between them. 5. Infection rate was 7.7% in group 1, 10.0% in group 2, 10.3% in group 3, 4.0% ingroup 4 and there were statistically no significant differences between groups. In summary, it is more important to extract the impacted lower third molar under aseptic condition and to minimize the injury of tissue if possible than to administer the preventive antibiotics in reducing the infection rate in healthy patients without medical problems who had no signs and symptoms of infection around the lower third molar.

初·中等學校 科學敎育課程(化學嶺域)의 連繫性 考察

呂煥鎭,金鎭憲 慶北大學校 師範大學 1987 敎育硏究誌 Vol.29 No.-

We must select the adequate teaching-learning contents to the step of learning development to learn material and energy, the fundamental concepts of modern chemistry and it is inevitable that teaching-learning contents should connect between curricula of elementary-secondary school. Therefore this study analyze the following items on chemistry sphere of science curricula in elementary-middle-high school. 1) The character of chemistry-education. 2) The objective. 3) The learning-contents in units and concept sphere. 4) The contents and inquiry process in experiments. The major findings of this study are drawn as follows: 1) The connection is considered in the character of chemistry education. 2) The connection is considered well in general objective and affective objective but badly in cognitive and psychomotar objective. 3) The connection of the unit in learning contents is considered well between elementary school and middle school but badly on the whole. The connection of the learning-contents is different according to concept sphere and the connection between middle school and high school is better than that between elementary school and middle school. 4) The mean ratios of elements in inquiry process is increased gradually acceding to the level of each degree-school but is relatively high in middle school.

비안와 사골골절의 치료 : 증례보고

여환호,김영균 大韓顎顔面成形再建外科學會 1994 Maxillofacial Plastic Reconstructive Surgery Vol.16 No.1

A naso-orbito- ethmoid(NOE) fracture is very complex diagnostically and therapeutically. The diagnosis of this fractures is usually made by physical findings aided by a CT scan. The primary treatment of NOE fracture must be directed toward the reconstruction of medial canthal ligament and bony skeleton. We prefer to correct lacrimal system abnormalities secondarily A 32-year old male patient visited emergency room of our hospital with NOE fracture. After emergency treatment and consultation with neurosurgery and ophthalmology, we treated this patient by performing reconstruction of medial canthal ligament, bone graft of media orbital rim bloeout fracture, and dorsal nasal cantilever bone graft with calvarial bone. The authors present a case report with literature review.

하악골 골절의 견고고정에 사용된 monocortical titanium miniplate와 관련된 감염증에 관한 연구

여환호,김영균,이효빈,김경원 大韓顎顔面成形再建外科學會 1994 Maxillofacial Plastic Reconstructive Surgery Vol.16 No.4

Eighty-nine patients with mandibular fracture were treated by open reduction and internal fixation using the monocortical titanium miniplate(Leibinger Co.). Postsurgical intermaxillary fixation was carried out for 2 to 18 days according to the patient's status. Seven patients developed infections postoperatively(7.9%). Five patients were favorably treated by incision and drainage and/or saucerization. But two patients were not controlled by early surgical intervention and should have been followed by plate removal, saucerization and secondary reconstruction including the bone graft. This article reports the postoperative infection associated with miniplate fixation of mandibular fractures and discuss the incidence, cause, treatment and prognosis with careful case analyses.