錦江産 철갑상어의 비늘 特性에 관한硏究

劉奉錫,金鍾連,金容煥 군산대학교 1983 群山水産專門大學 硏究報告 Vol.17 No.3

The morphological characteristics of scales on Acipenser sinensis can be summarized as follows: 1.The form of scales on Acipenser sinensis caught in the Gum river can be classified form of Chrysanthemum, Frying wild goose, Butterfly, Fragment, Dog teeth scales. 2.The longitudinal diameter on the scales of the dorsal part and the lateral part is longer than the transverse diameter of it, but ventral part is contrary. 3.Half of the transverse diameter is divided by the tuber line and both of transverse diameter of dorsal scale are the same length. But above transverse diameters of lateral scales are longer than below length, and in the ventral scale below lengths are longer than above lengths. 4.Unappeared part of scale is not formed by a groove and ridge, form of a net work but appeared part is forms a network, a form of a same mind. 5.The scales having the largest diameter and the smollest diameter are appeared in front of the pectoral fin. 6.The average growth rate of all scales is rapid on anterior than posterior.

Echinostoma hortense를 실험 감염시킨 흰쥐 장상피에서 림프구 (IEL) 증감에 관한 연구

류장근,노병의,이지숙,양용석 THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCIEN 1999 Journal of biomedical laboratory sciences Vol.5 No.1

저자들은 호르텐스극구흡충을 실험적으로 흰쥐(Sprague Dawley)에 감염시켰을 때 장상피내 램프구 (intraepithelial lymphocytes: IEL)의 증감여부를 관찰하였다. 즉, 피낭유충을 경구 감염시킨 다음 1주일부터 8주일까지 격주별로 소장점막에서 IEL의 수치, 융모/선와의 비 (villus/crypt ratio)등을 현미경적으로 관찰하였다. 감염 흰쥐는 격주별로 희생시켰으며 소장의 십이장과 공장부위의 조직을 획득하여 조직절편을 제작하였고, Hematoxylin-eosin 및 Giemsa 염색을 실시한 후 IEL 수, 위치의 변동을 현미경적으로 관찰하였다. 융모 위축과 선와 증식, V/C ratio의 감소를 특징으로 하는 장병변은 감염 1주일 경과한 소장에서 가장 심하였으며 이 병변은 8주일까지 계속되고 있었다. IEL은 감염 1주일에 급속하게 감소하였다가 서서히 증가하다가 8주일 때에는 다소 감소하는 결과를 보였다. 대조군에서 IEL은 대부분 장상피층의 기저부에 위치하였으나, 감염 초기에는 많은 IEL이 장상피세포의 핵주변부와 상층부에 분포하는 것이 특이하였다. 이와 같이 호르텐스극구흡충 감염시 나타나는 IEL 수 및 위치의 변동은 장병변의 진행과정과 관련이 있음을 알 수 있었다. The relationship between the intestinal histopathology and number and position of intraepithelial lymphocytes (IEL) was observed chronologically in the small intestine of rats experimentally infected with Echinostoma hortense. Sprague-Dawley rats were orally infected with 200 metacercariae obtained from Misgurnus anguillicaudatus. The rats each were sacrificed on the week 1, 2, 4, 6, 8 post-infection (PI) and samples of the intestine in the part of duodenum and jejunum were taken. The samples were stained with Hematoxylin-eosin and Giemsa. The intestinal histopathology was the severest after the week 1 PI and characterized by villous atrophy, crypt hyperplasia and decrease of villus/crypt(v/c) ratio, which continued until the week 8 PI. The number of IEL dramatically decreased during the week 1 PI, but increased gradually thereafter with a slight decrease on the week 8 PI. In control rats, the great majority of the IEL were located at the basal region of the epithelium. During the early stage of infection, however, we found a considerable proportion of IEL to moved to the intermediate or apical regions of the epithelium. From the above results, it is sugested that the change of IEL number and position during the course of E. hortense infection should be closely related to the progression and recovery of the intestinal histopathology.

키토산과 견사 단백질 복합체의 특성

김희숙,원용돈,류병호 한국식품영양학회 1996 韓國食品營養學會誌 Vol.9 No.4

기능성 다이어트 식품을 개발을 목적으로, 키토산과 견 피브로인의 복합체를 만들고 성질을 조사하였다. 키토산은 대동새우로부터 추출하였고, 견사 피브로인 섬유는 누에로부터 추출하였다. 견사의 특성을 알아보기 위하여 용해도를 조사한 결과, 용해도는 8M LiBr이상의 농도와 40℃ 이상에서 가장 높았다. 견사 피브로인의 아미노산 조성은 천연견사 및 용해시킨 피브로인과 같았다. 키토산, 견사 피브로인 복합체의 아미노산 조성은 glycine, alanine, serine, tyrosine, threonine 및 glutamic acid 순서를 많았다. 또한 IR 스펙트럼 결과, 키토산·견사 피브로인 복합체는 배합비율에 따른 스텍트럼상의 차이는 거의 없었다. In order to develop the functional diet food, characteristics of chitosan and silk fibroin composite was designed. Chitosan extracted from a prawn and silk fibroin was prepared from silkworm. The silk fibroin was dissolved rapidly in the 8M LiBr at a temperatrue of more than 40℃. Amino acid composition of fibroin composite revealed the same pattern that of native silk fibroin and regenerated silk fibroin. Predominant amino acid of chitosan-fibroin composite contained glycine, alanine, serine, tyrosine, threonine, and glutamic acid in order. According to the basis on the infrared spectrum, chitosan-silk fibroin composite is not distinguished differents composite ratio of chitosan and silk fibroin.

북한 고등중학교 「지리」 교과서 분석 연구

최석진,남상준,류재명,손용택,이동엽 한국사회과교육연구회 2000 사회과교육 Vol.- No.33

이 연구는 남북한 통일을 대비하여 북한 고등중학교 지리 교육과정 및 교과서를 비교·분석한 것이다. 남북한의 학제와 지리과 영역의 교육과정상의 위치가 다르고 북한의 교육과정을 입수할 수 없었기 때문에, 입수한 북한의 고등중학교 1학년부터 5학년의 지리교과서 5종(1991년도부터 1993년도 발행분)을 대상으로 분석하여, 남한 6차 교육과정의 중학교 사회와 고등학교 공통사회(한국지리) 및 세계지리 내용을 비교 분석하였다. 연구 결과는 다음과 같다. 첫째, 남북한 중등학교 지리교육은 교육과정상의 편제에서 북한은 고등중학교 전학년에 걸쳐서 지리가 독립과목으로 편제되어 있으나, 남한은 중학교 사회과에 통합되어 있고, 고등학교에서는 공통사회에 포함되었으며 세계지리가 선택과목으로 되어있는 등 지리교육 내용계열과 조직체계도 차이가 난다. 둘째, 지리 교육의 이념과 목표에서, 남한은 민주시민 양성을 목표로 하여 개인의 지리교육적 성취가 주된 것이나, 북한은 집단 구성원으로서의 개인 양성에 중점을 두고 있다. 이러한 차이점은 정치체제의 차이에서 비롯된 것이며 지리교육 내용의 구성과 강조점등에서 많은 차이점을 나타내게 하고 있다. 셋째, 지리교육 내용 구성과 서술 등에 차이가 있다. 국토지리와 세계지리 및 계통지리와 지지의 배열과 비중 등이 다르며, 내용의 서술에서도 차이점을 볼 수 있다. 특히, 북한에서는 국토지리와 자연지리의 비중이 높으며, 주요 개념과 용어 설명에서 남한과 다른 점이 보인다. 넷째, 교과서의 구성과 교수-학습 방법 및 자료 사용에서 차이점이 보인다. 북한에서는 실습, 실험 등이 강조되면서 실제적인 기능 향상에 많은 비중을 두고 있으며, 사진에 비해서 그림을 사용하는 삽화의 비중이 높다. 교과서의 외형적 체제와 지질 등에서 차이가 큰데, 이 점은 경제력의 차이에서 비롯된다. 본 연구 결과 남북한은 모두 지리교육을 중등학교에서 중요시하고 있으며, 지리교육을 통하여 소기의 목표 달성에 노력하고 있으나, 서로간에 상당한 차이점도 발견할 수 있었다. The purpose of this study is to understand the similarity and differences of the geography textbook between north and south Korea in preparation for the unification. Five geography textbooks for the first through fifth grade in secondary school were used in the analysis of the geography curriculum for secondary schools in North Korea. The major findings of the study are as follows: First, South Korea takes an integration approach to teach geography as part of the social studies education whereas North Korea treats geography as an independent subject throughout secondary school. Second, South Korea aims at nurturing democratic citizen, emphasizing individual achievement, whereas North Korea puts emphasize nurturing citizenship within community. Third, difference is noted in the organization and content of the geography curriculum between the two Koreas. North Korea puts more emphasis on national geography and natural geography than does South Korea. Forth, North Korean textbook is different from that of South Korea in that the former emphasizes on performance skills through hands-on practice and training. Also North Korean textbook uses more drawings than pictures. Despite differences in various aspects of curriculum and textbooks, there are a great deal of overlap in essential concepts and contents covered in two Koreas' geography textbooks. Both Koreas value geography education in the secondary schools and make efforts to fulfil the educational objectives in geography.

시기능 향상을 위한 시각장애인용 전자시력보조장치의 개발

이용천,유영기,오춘석 선문대학교 ·중소기업기술지원연구소 2002 선문공대 연구/기술 논문집 Vol.7 No.1

최근 의료기술이 발달함에 따라 평균연령이 증가하면서 노인성변화나 변성에 의한 시력장애가 많아지고 사고에 의한 시력장애가 발생함에 따라 시각재활을 필요로 하는 시각장애인의 수는 현저히 늘어가고 있다. 질환에 대한 치료 못지 않게 중요한 것이 장애에 대한 재활이다. 시각장애인이 시기능을 향상시킬 수 있는 대표적인 것이 시력보조기구를 사용하는 것이다. 하지만, 각자 시각 장애에 대한 원인이 다른 환자들은 이미 상용화된 저시력 기구나 장비로 일상생활에 필요한 충분한 시기능 향상을 얻지 못하고 있다. 더구나 우리나라에서는 저시력에 대한 연구가 미비한 상태로 대개의 보조기구들은 전적으로 수입에 의존하고 있는 실정이다. 최근 국내의 한 기업이 시각장애인용 전자시력보조장비를 개발하였지만 고가이면서 부피가 크고, 머리에 착용하는 HMD형이기 때문에 시각장애인들이 활동을 하는데 있어서 불편하고 사용자가 국한된다는 단점을 가지고 있다. 본 연구에서는 앞에서 언급한 단점들을 보완하여 많은 시각장애인들이 사용할 수 있는 소형이면서 저가의 목걸이형 전자 시력보조장치를 개발한다. The number of persons with defective vision by senile change or degenerative illness has been increased remarkably as the life expectancy of a person has enhanced a lot with the advent of advanced medical technology. The number becomes still higher with the number of accidents. Now rehabilitation has become more important than cure. The normal method of improving visual ability of a person is to use the visual enhancement system. However, commercially available systems are not sufficient for the proper enhancement of differently caused visual obstacles. Furthermore, our country is unprepared for the research in this field and most of the enhancement equipment are imported. Recently, a Domestic Corporation has developed sightvisual enhancement equipment for low vision, but it is bulk in size and expensive as well. A person feels uncomfortable while using it dueto its size and has to be mounted on the head. In this research, we have developed a low cost, compact, neckwear type visual enhancement system that could be accessible and user friendly to all the visually impaired persons.

폐탄광 배수에 의한 주변 화천 오염 실태 조사

조경숙,장용근,류희욱 崇實大學校 生産技術硏究所 1996 論文集 Vol.26 No.1

The survey was carried out to investigated the contamination of streams by the acid mine drainage originates from abandoned coal mines and coal refuse piles. The physico-chemical characteristics such as pH, sulfate and elements concentrations of waters and sediments in streams were analyzed, and the microbial activities in the sediments were evaluated by measuring dehydrogenase activities. In sites contaminated by the acid mine dranage, the pH of waters adn sediments declined to acid from neutral due to the accumulation of sulfate. Dehyfrogenase activities ranged from 12 to 170 ㎍-TPF·g-dry soil-¹·24h-¹in the contaminated sites, whereas teh uncontaminated sites had activities of 1,176-4,259 ㎍-TPF·g-dry soil-¹·24h-¹. Dehydrogenase activities were significantly affected by low pH of sediments, indicating that high strength of sulfate inhibited microbial activities. The concentrations of heavy matals such as Pb and Fe in contaminated sediment (37-46 ppm Pb; 46,000 ppm Fe) were much higher than those in the uncontamnated sediments. concentration of Al in the contaminated water acidfied by the abandoned coal drainage was in range of 11 to 42 ppm. compared with those in the uncontaminated sediments, the concentrations of Mn, Mg and Ca in contaminated sediments were low because of the leaching of them from soil to water by acidfied stream water.

退行性關節炎 韓方治療에 對한 最近 硏究 動向 : 臨床硏究 方法論을 中心으로 Herbal Medicines in the Treatment of Osteoarthritis in Pubmed and Chinese Medical Journals

서병관,류성룡,이송실,허정은,백용현,이재동,최도영,조윤제,김남재,박동석 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2004 東西醫學硏究所 論文集 Vol.2004 No.-

Objective : The aim of this study was to review systemically clinical trials on the effectiveness and safety of herbal medicines in the treatment of osteoarthritis. Methods : Computerized literature searches were carried out on seven electronic databases, and hand-searching on some chinese medical journals in library of Kyung Hee Medical Center. Trial data were extracted in a standardized, predefined manner and assessed independently. Results : 1. Thirty reports of clinical trials and two reports of meta-analyses concerning herbal medicine were collected and reviewed Among these reports three medical herbs were applied as topical medicine and others as internal medicine. 2. The western studies established NSAIDs or placebo as their control group. Five chinese reports established formulated herb pill(Ruanshnagshenjin pill) as their control group and Six did not establish a control group at all. 3. ACR was the most highly used diagnostic criteria in the western studies while the Chinese used their official criteria established by their government or the criteria of their text books. 4. 20 reports chose the Lequesne functional index, SHAQ, WOMAC OA index, AIMS, and their own unique scoring system as the criteria of analysing the effect. Others chose clinical symptoms, articular functions, and lab finding as their criteria. 5. 7 single herbs and 19 formulated herbs were studied. Among the formulated herbs, Achyranthes japonica was studied in 10 of the studies and Angelica gigantis Radix in 8, making them the most often studied herbs among the studies.

둔부 통증을 주소로 내원한 괴사성 근막염 1례

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.

淋菌의 藥劑耐性樣相에 對한 調査硏究

李承薰,石鍾聲,朴蕙瓊,金景俊,柳在根,李龍雨 國立保健硏究院 1973 국립보건연구원보 Vol.10 No.-

DBD 반응기에서 플라즈마 방전형태에 따른 PFC_(s) 가스의 분해 특성

김관태,김용호,차민석,송영훈,김석준,류정인 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.5

Perfluorocompounds(PFC_(s)), such as tetrafluoromethane (CF₄) and hexafluoroethane (C₂F_(6)), have been widely used as plasma etching and chemical vapor deposition (CVD) gases for semiconductor manufacturing processes. Since these PFC_(s) are known to cause a greenhouse effect intensively, there has been a growing interest in reducing PFC_(s) emissions. Among various CF₄ decomposing techniques, a dielectric barrier discharge (DBD) is considered as one of a promising candidate because it has been successfully used for generating ozone (O₃) and decomposing nitrogen oxide (NO). Firstly, optimal concentration of oxygen for CF₄ decomposition was found to figure out how many primary and secondary reactions are associated with DBD process. Secondary, to find effective discharge method for CF₄ decomposition, a streamer and a glow mode in DBD are experimentally compared, which includes (ⅰ) coaxialcylinder DBD, (ⅱ) DBD reactor packed with glass beads. and (ⅲ) a glow mode operation with a helium gas. The test results showed that optimal concentration of oxygen was ranged 500 ppm~1% for treating 500 ppm of CF₄ and helium glow discharge was the most efficient one to decompose CF₄.