ICR mouse 체중성장에 관한 연구

이경열,김무강,박미선,김길수 충남대학교 수의과대학 동물의과학연구소 2001 動物醫科學硏究誌 Vol.9 No.-

Authors analyze the growth quantities and several factors including in the health ICR mouse by the growth formula utilizing the mean of measured ICR mouse body weight from 3 th week to 8th week. The result were as followings. 1. The variance coefficient of deviation to the mean was lower than 30 percent in all groups. 2. The growth quantities of male was larger than female in body weights of the all group, and body weight of the male and female was gradually increased from 3th week to 8th week. 3. The deviation between the measured and theological body weight of the ICR mouse was below the 2g in all groups of male and female. 4. the deviation precent to the theological growth quantities was below than 5,6% and 11% in male and female group. 5. The sum of the deviation percent of the theological growth quantities of the each group in male and female was 1.69% and 2.3%. thus measured and theological body weight was almost coincidence in all measured weeks. 6. The growth rate of the each week was larger in the 3th week in male and female, after then the growth rate of the male and female was gradually decreased. 7. The specific growth rate of the growth rate to the growth quantities in male and female was largest in the 3th week, after that the rat was gradually decreased.

치아의 특징을 중심으로한 대형참사시의 개인식별

신경진,최종훈,김종열 大韓法醫學會 1999 대한법의학회지 Vol.23 No.2

Teeth have many characteristics compared to any other part of human body for the individual identification and strong resistance against external environment. So teeth is the major informant of dental identification in mass disasters. A dental inspector who accomplish dental identification should carefully observe the characteristics of teeth such as missing tooth, impacted tooth, supernumerary tooth, anatomical abnormality, dental caries, residual root rest, servre attrition, cervical abrasion, distinction of primary and permanent tooth, filling material, type and cavity, material and type of prosthesis, orthodontic appliance and information of dentition. There are enormous forensic odontological data of the victims in mass disasters. Such data has to be collected, selected and compared systematically antemortem and postmortem data of the victims by using computer and dental identification software. Using this kind of method, it is highly expected that dental identification can be more efficient than any other forensic identification.

다변량해석기법을 활용한 치아 교모도에 의한 연령추정

곽경환,김종열 大韓法醫學會 1993 대한법의학회지 Vol.17 No.1

The use of physiologic changes of teeth is comparatively definite to estimate age for old people who had stoped the growth and development. among many physiological indicators, tooth attritions is visible to naked eye and does not need any damage of submect and has close relationship to age. The author examined tooth attritions and dental restorations of 229 subjects, and degrees of the attrition of all teeth was judged 5 categories according to the method by Takei. Multivariate analysis was applied for the Mathematico-Statistical means. The results were as follows : 1. Four calculators for age estimation by attrition value were given in case that 28 all teeth were used, and 14 maxillary teeth were used, and 14 mandibular teeth were used, and maxillary and mandibular 14 teeth were used. 2. Partial correlation coefficients of each tooth were calculated in order to show that which tooth is more contributive to age estimation. In case that the 28 all teeth were used, 2?? premolar was the most contributive to age estimation and 1?? molar, incisor, 2?? molar, lateral incisor, canine, 1?? premolar, respectively. 3. For more accurate age estimation, calculator by 28 teeth is recommendable to person who has comparatively more dental restoration, and calculator by maxillary and mandibular 14 teeth is recommendable to person who has less dental restoration and missing tooth.

절수에 의한 mongolian gerbil의 체중 변화에 관한 연구

이경열,송치원,김무강,조성환,류시윤,김상근,박배근 충남대학교 수의과대학 동물의과학연구소 1996 動物醫科學硏究誌 Vol.4 No.-

Recently, the mongolian gerbils have been used in neurology and the study of water metabolism because of their easy onset of epileptic seizure and typical resistance to water deprivation. The sebaceous glands which are under the control of the gonadal hrmones are differently developed from the other laboratory animals. However the physiological data on the changes of body weight following water deprivation in mongolian gerbils is not available until now. In order to investigate the effect of the water deprivation on the body weight, the animals were deprived of water for 15 days. The body weights were measured daily by the torsion balance. The mean, the standard deviation, the standard error and the coefficient of variance of the body weights were calculated. The correlation was examined. The potential regression equation was y = 61.5458 - 2.0533 * x + 0.0487 * x^2. The regression coefficient was 0.993. The results obtained were as follows : 1. The body weights of the mongolian gerbils were continuously decrased from the 1st day to the 15th day after the water deprivation. 2. The mean body weight on the water deprivation was 63.0±7.00g and that at the 15th day was 41.4 ± 5.42g. 3. The coefficients of the variance showed the highest (13.09) at the 15th day and the lowest (10.10) at the 10th day. the coefficients of the variance kept decreasing until the 10th day and thereafter gradually increased until the 15th day. 4. The changing rate of the body weight kept continuously decreasing from the 1st day to the 15th day showing the daily loss of 1.0 - 3.3%. 5.The deviations (M - QBW) between the measured values (m) and the theorical values (QBW) using the regression equation showed the highest (1.494) at the 1st day and the lowest (0.053) at the 13th day. 6. The sum of the devitions was 0.179 and that of the deviation square was 1.15. The sum of the deviation rates between the mesaured body weights and the theorical ones was 0.484. 7. The daily body weight loss showed the highest at the 1st day by 2.053g and the lowest at the 15th day by 0.591g. 8. The specific body weight changing rates which were the rate of the body weight changing velocity to the changed body weight were decreased from 0.033% at the 1st day to 0.014% at the 15th day.

영산호 퇴적토에서 미생물의 분포와 환경요인과의 관계

박경수,박열 조선대학교 기초과학연구소 1989 自然科學硏究 Vol.12 No.1

본 연구는 영산호 퇴적토양내에 서식하고 있는 각 미생물의 계절적 취락분포와 생리적 특성균인 단백질 분해세균, 지방분해세균 및 전분분해세균의 서식밀도를 조사하였으며 또한 퇴적토양의 이화학적 성상을 조사하여 제반환경요인과 각 미생물과의 상관관계를 분석하였다. 퇴적토양내의 이화학적 특성은 pH값이 정점 1에서 6.8~7.1로서 정점 2와 정점 3에 비해 다소높은 경향을 보였으며 유기물함량도 정점 1에서 1.37~1.83%의 수준으로 다른 정점에 비해 높은 수준이었다. 또한 퇴적토양의 함수율도 정점 1에서 40.6~50.2% 높은 값을 가졌으나 이화학적 성상이 각 정점에서 계절적차이는 인정할 수 없었다. 한편 각 정점ㅂ려 미생물상의 취락분포는 정점 1에서 가장 높은 서식밀도를 나타냈으며 일반세균이 방선균과 사상균보다 더 높은 서식밀도를 가지고 있었으며 각 미생물의 계절적 취락분포는 정점에 관계없이 여름철과 가을철에 높은 서식밀도의 변화를 나타내고 있었다. 또한 생리특성균의 취락분포는 함수량과 유기물함량이 높은 정점 1에서 계절에 관계없이 전반적으로 높은 서식밀도를 가지며 단백질분해세균이 다른 분해세균보다 높은 서식밀도를 보이고 있었다. 한편 퇴적토양내 각 미생물의 취락분포에 영향을 주는 환경요인은 pH, 산화환원전위 (Eh), 수분함량, 유기물함량 등으로 나타났다. 이들은 각 정점에서 미생물의 취락수와 높은 정. 부의 상관관계를 나타내고 있으며 또한 각 미생물간에 있어서도 산관관계는 아주 높은 정 상관관계를 가지고 있었다. Seasonal distribution of microorganism flora and physico chemical characteristics were measured in the sediments of the Youngsan lake. And interrelationship between microorganism flora and environmental factors were also studied. Annual pH ranges of the sediments were 6.8 and 7.1 in the site 1. Also, annual organic metter contents and annual moisture contents of sediments were 1.37~1.83% and 40.6~50.2% in the site 1. It was shown that environmental factor values were higehr in the site 1 than those of site 2 and site 3 But seasonal changes of physico chemical characteristics showed not in the sediments of each sites. Distribution density of microorganism flora in the site 1 showed high est values among the other sites. And general bacteria population showed higher values than those of actinomycetes and fugus in the all sites. Seasonal distributions of microorganism flora were high in the summer and autumn without regard to sites. Annual distribution of physiological bacteria have been high in the site 1, and proteolytic bacteria showed higher dencity than those of other phy siological bacteria. Populations of microorganism flora were closely correlated with such environmental factors as pH, redox potential, moisture contents and organic matter contents. And each of micoorganisms were very correlated with all microorganism flora.

日本腦炎 바이러스에 대한 動物의 血淸學的 硏究

朴京洙,朴悅 朝鮮大學校 附設 醫學硏究所 1984 The Medical Journal of Chosun University Vol.9 No.1

Japanese Encephalitis Virus liaa been widely known aa prime acute cummunicablc viral disease during the summer season in Korea. Many basic problems such as virus hibeniating, vector resting habit and hibernation were still remained to be solved although so many researches of this field had been done. And then, the incidences of Japanese Encephalitis Virus were so various that predictions of the epidemic size were not always coincident. The purpose of this report was to present the seasonal occurrence of Japanese Encephalitis Virus from the slaughter house swines in Chunnam from June 28, 1982. The study was also carried out with the epidemiological relationship of Japanese Encephalitis Virus antibody distribution in fowls, ducks, and cats at Chunnam area during September. 1982. The present investigation was preformsd by using hemagglutination inhibition test (Aimproved method of National Institute of Health Republic of Korea, 1978.) The obtained results were as follows: 1). Results of HI antibody positive rate in swines of slaughter house from June 28, 1982 to September 1, 1982 at Chunnam area showed as follows; They represented 10% on July 20, 18% on August 9, 75% on August 16, 94% on August 24, and 100% on September 1. 2). HI antibody positive rates of provincial distributions in the fourteen fowl areas were different from each other and they were 27 cases (13.7%) among 197 cases. 3). HI antibody positive rates of provincial distributions in the ten duck areas were different from each other and they were the highest as 67 cases (64.5%) among 107 cases. 4). HI antibody positive rates in the cat were 2 cases (15.4%) among 13 cases. 5). Japanese Encephalitis Virus antibody rates in geographical distribution of the fowl and the duck showed more higher in the coastal areas than in the inland areas.

건축공사시방서에서의 KS규격의 국제인증방안에 관한 연구

김경식,이재섭,김용수,이규진,조용훈,최완철,전재열,이현수,구재동,이기환 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

The purpose of this research is make out construction specifications for International Construction. Using off-shore products incur cost increase and longer delivery term of construction. and inconvenient on International Construction. Expand the range of additional local products conforming to performance. Life Cycle Cost. maintainability. operability. user's acceptability, etc.. And this study is suggest the standard formats and the techniques for construction specification.

비접촉식 자외선램프를 이용한 살균/정화 수도꼭지

민경원,원종헌,이현철,한동열 江原大學校 産業技術硏究所 2007 産業技術硏究 Vol.27 No.B

Ultraviolet 1ight(UV-C, wavelength: 200~280nm) is employed profitably for sterilizing drinking water. For most water serving apparatus such as a water purifier, a water cooler and heater, a coffee vending machine and etc., pre-sterilized water may be contaminated secondarily with bacillary inhabitation in a container before serving, In consideration of this problem, a household water tap which is equipped with a sterilization/Purification device in combination with non-contact UV-lamP, was designed to sterilize and purify water at the last outlet just before serving. HopefuUy this simple but creative item may be commercialized for household and public use.

실수행렬을 위한 Jacobi-CORDIC 고유치 분해법의 구현

이경선,이동열,정봉식 동아대학교 공과대학부설 정보통신연구소 2007 情報技術硏究所論文誌 Vol.15 No.1

n this paper, the eigenvalue decomposition (EVD) algorithm of the real correlation matrix for unitary MUSIC (MUltiple SIgnal Classification) is implemented using Xilinx’s system generator tool. The Jacobi-CORDIC (COrdinate Rotation DIgital Computer) algorithm, which is applied to obtain the eigenvalue and eigenvector of the real matrix, has the advantage of the easy implementation. The simulation results show that the fixed-points results of system generator agree well with floating-points ones of Matlab .

Salmonellosis에 대한 細菌學的硏究

林賢植,朴京洙,朴悅 조선의대 1983 The Medical Journal of Chosun University Vol.8 No.1