Biochemical Characteristics and Antimicrobials Susceptibility of Salmonella gallinarum Isolated in Korea

Ki-seuk Kim,Young-ju Lee,Yong-kuk Kwon,Ryun-bin Tak 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Characteristics and Antimicrobials Susceptibility of Salmonella gallinarum Isolated in KoreaYoung-ju Lee, Ki-seuk Kim1,*, Yong-kuk Kwon and Ryun-bin Tak1Avian Disease Division, National Veterinary Research and Quarantine Service, Anyang 430-824, Korea1College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, KoreaReceived February 13, 2003 / Accepted April 30, 2003J. Vet. Sci. (2003), 4(2), 161-166JOURNAL OFVeterinaryScience*Corresponding author: Ki-seuk Kim College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea Tel: 82-53-950-5962, Fax: 82-53-950-5955 E-mail: kimkiseuk@knu.ac.kr

휴대폰 케이스 가공업체에서 발생한 은피증 1예

탁기홍,윤석환,이미영,신동훈,정인성 대한산업의학회 2006 대한직업환경의학회지 Vol.18 No.4

배경: 은피증은 은의 피부 침착에 의해서 생기는 질환으로, 만성적인 노출에 의해 생기며, 치료법이 없는 영구적인 질병이다. 은의 흡입에 의한 은피증의 보고는 아주 드물며, 우리나라에는 현재까지 관련 보고가 없었다. 이에 휴대폰 도장제의 은 흡입에 의한 은피증을 보고하고자 한다. 증례: 30세 남자근로자로 5년 전부터 휴대폰 부품조립 및 도장업체에서 EMI부서와 가스켓부서에서 전자기파 차단제를 스프레이 도장하는 작업을 하였고, 3년 전부터 서서히 발생한 얼굴과 몸의 회색 및 회청색 피부색 변화를 주소로 내원하였다. 전자기파 차단제는 은, 구리, 용제들로 구성되어 있었다. 피부 조직 검사에서 에크린 한선 기저판(basal lamina)에 미세하고 둥근 흑갈색 과립들이 관찰되어 은피증의 소견을 보였으며, 작업중 노출된 은 흡입에 의한 직업성 은피증으로 진단하였다. 킬레이트 치료는 도움 되지 않으며, 노출 중단 및 자외선 차단 등의 보존적인 방법을 사용하고 있다. 고찰: 은피증은 은의 복용, 흡입, 접촉에 의해 발생한다. 본 증례에서는 은피증을 원인으로 작업시의 은 노출 이외의 은 노출을 발견할 수 없었다. 그러므로, 직업성 은피증으로 사료되며, 은의 첨가제에 의해 은피증이 발생 할 수 있음을 보여준다. 현재 전자기파 차단의 용도로 은과 은 화합물의 사용이 계속되고 있으므로, 이에 대한 대책이 필요하다고 본다. 적절한 치료법이 없기 때문에, 예 방이 가장 중요하며, 보호구 착용, 작업환경 개선, 산업 안전보건교육이 필요하다. Background: Skin contact with, and the breathing in of air containing silver compounds can occur in the workplace. Occupational exposure to silver and its compounds is mainly via airborne dust, metal fumes, and mists of solutions containing silver compounds. Argyria results from increased serum silver levels and the deposition of silver-containing particles in the dermis and mucous membranes. The author reports a patient with generalized argyria, who worked on the manufacture of cellular phone cases. Case report: The patient was a 30 year-old male, with extensive blue-gray discoloration of the whole body, especially sun-exposed area, of 3 years duration. He had been exposed to silver in the processing of EMI for the past 4 years and gaskets for 1 year. EMI is the process by which the internal electromagnetic wave in cellular phone cases are shielded, and gaskets play an important role in shielding the electric clashes between electronic circuits, as well as increasing the durability of cellular phone cases to impact. EMI had been processed manually but this was changed to automatic spraying by robots in 2003. On physical examination, the patient had diffuse blue-gray discoloration of the skin, which was most prominent in the sun-exposed areas of his face, neck and V of the chest. Histopathological examination of a punch biopsy specimen from the posterior neck revealed fine, minute, round, and brown-black granules deposited in the basement membrane zone surrounding the eccrine glands. The laboratory findings were positive for hepatitis B antigen, with a serum silver concentration of 150.3 ppb. From this evidence, he was diagnosed with argyria due to silver exposure. Discussion: The author reports a case of occupational systemic argyria due to inhalation exposure of silver compounds.

불소처리된 치근상아질에 대한 심미수복재의 결합에 관한 연구

탁흥수,박상진,민병순,최호영,최기운 大韓齒科保存學會 1998 Restorative Dentistry & Endodontics Vol.23 No.1

The purpose of this study was to evaluate the effects of fluoride application on the aspect of shear bond strength of three aesthetic restorative materials to dentin. One light-cured composite resin(Palfique Esterite) and two light-cured glass ionomer cements(Fuji Ⅱ LC and Compoglass) were used in this study. 120 permanent molars were used for this study. The teeth were extracted due to the origin of periodontal disease. The crowns of all teeth were removed, and the remaining roots were embedded in epoxy resin. The mesial or distal surfaces of roots were ground flat to expose dentin and polished on wet 320-, 400-, and 600 grit SIC papers for a total of 120 prepared flat root dentin surfaces. The prepared samples were divided into six groups. Group 1, 3, and 5 were control groups and group 2, 4, and 6 were experimental groups. Sixty samples for experimental groups were treated with 2% NaF solution for 5 minutes. Group 1 and 2 were bonded with Plafique Esterite, group 3 and 4 were bonded with Fuji ll L(and group 5 and 6 were bonded with Compoglass. After 24 hours water storage at 37±1℃, all samples were subjected to a shear to fracture with Instron universal testing machine(No.4467) at 1.0㎜/min displacement rate. Dentin surfaces treated with each conditioners before bonding and interfacial layers between dentin and aesthetic restorative materials were observed under Scanning Electron Microscope(Hitachi S-2300) at 20Kvp. The data were evaluated statistically at the 95% confidence level with ANOVA test. The result were as follows; 1. Among the control groups, group 1 showed strongest bond strength and group 3 showed weakest. 2. Among the experimental groups, group 2 showed strongest bond strength and group 6 showed weakest. 3. Statistical analysis of the data showed that pretreatment of dentin with 2% NaF solution significantly decreased the bond strength of three aesthetic restorative materials to dentin(P<0.05). 4. SEM findings of fluoride treated dentin surfaces(2, 4, 6 group) demonstrated dentin surfaces covered with fluoridated reaction products. 5. Except group 4 and 6, resin tags were formed in all groups.

성인 비만의 건강특성에 관한 분석적 연구

탁기천,류규수 韓國保健敎育.健康增進學會 2001 보건교육건강증진학회지 Vol.18 No.2

This study was carried out to offer the basic data for more qualitative lives of the adulthood obesity through their health maintenance and control. So, the researcher reviewed and analyzed the health problems of the subjects according to sex, age, and positive rate on the screening tests. The subjects were 91 obese persons in K university hospital in Seoul from December 1,2000 to January 31, 2001. A Questionnaire developed by researcher to obtain subject's general characteristics, main symptoms, medic피 examination, diagnosed disease was used as the tool for the study. The results of this study are as follows : 1.For the distribution of diagnosis in subjects, liver disease was most frequent and hypertension was second. 2.The most common complaints were indigestion in the digestive system, throat pain in the respiratory system, dyspnea in cardiovascular system, thirsty in endocrine system, frequent urine in the urinary system, vertigo in the hematologic system. 3.The main symptoms according to sex were for females, a statistically significant higher rate of complaints in the digestive system, musculoskeletal system as compared to males. 4.The main symptoms according to age were that in the fourth decade there were higher rate of complaints in the musculoskeletal system. 5.In screening tests according to sex, males showed a higher positive rate for Alk-Phosphatase and females, in FBS, urine-micro, VDRL. 6.In screening tests according to age, higher positive rates of BP, Chest X-ray, mammography, ESR, CRP were seen in the fourth decades. 7.Obesity was positively related to cardiovascular system, endocrine system, urinary system, musculoskeletal system, mental and nervous system in main symptoms. 8.Obesity was positively related to BP, Sonography, FBS, SG7T, SGPT in screening tests.

國際政治史 序說

李基鐸 연세대학교 행정대학원 1981 延世行政論叢 Vol.8 No.-

가뭄기간의 저수지 운영방안에 관한 연구

박기범,이순탁 한국환경과학회 2004 한국환경과학회지 Vol.13 No.12

In this study the results of optimal water supply analysis by operating constraints of reservoirs during drought period are as follows. During drought period, water supply reliability is possible about 97~61% by CASE 1-CASE 5. Water supply reliability is possible about 97.3% in case of the Andong dam and 87.7% in case of the Imha dam by CASE 3. Also, under the constraints of CASE 4, water supply reliability is possible about 87.5% in case of the Andong dam and 73.3% in case of the Imha dam. The reason what low of available water supply ratio is decreased inflow of Imha dam. When compare standard deviation of average storage with standard deviation of storage, stable storage can be secured during successive drought period. And it also can minimize shortage of water during drought. therefore, it is impossible that reservoir supply sufficient water but change of operating condition is better than pervious on that followed by full reservoir level. It is need that the study for optimal water supply during drought period has to be continued.

무선 ATM망에서의 동적 대역폭 할당 알고리즘에 대한 QoS 성능 연구

류기훈,김지연,전광탁,양해권 군산대학교 정보통신기술연구소 2000 情報通信技術硏究論文集 Vol.4 No.-

In the network with small cell radius, a mobile terminal which has large mobility should perform frequent handover. This requires that handover mechanism must be done fastly. As cell size is smaller, signal power level is lower Handover is implemented by the network to give the users freedom of motion beyond a limited wireless coverage area while they are communication. The handover is procedure by which a user's radio link is transferred from one radio port to another through the network without an interruption of the user collection. The currently existing method for handover uses an algorithm, in which the bandwidth corresponding to the adjacent cells is supposed to be allocated. However, this method leads to the problem of requiring bandwidth allocation for many-unknown cells, due to the lack of information toward moving direction in mobile terminal. In this paper, we propose an efficient dynamic bandwidth allocation algorithm for solving those problem above, based on both path rerouting handover and soft hangover mechanism with wireless ATM. Thus, only the bandwidth for corresponding adjacent cell, that is from estimation, is chosen to be reserved; this method drastically reduces the waste of bandwidth, and improves the efficiency in performance. Comparing with static bandwidth allocation algorithm, the proposed algorithm make a bandwidth allocation more efficient. As for the QoS, it has been shown that proposed algorithm shows better performance than that with static bandwidth allocation algorithm.

洛東江流域에서의 低水流出 시뮤레이션 모델

李舜鐸,朴埼鎬 嶺南大學校 工業技術硏究所 1993 工業技術硏究所論文集 Vol.21 No.1

Nowadays, there is a Tank Lowflow Simulation Model in Nakdong River Basin. The major purpose of this study was to develope enhenced Lowflow Simulation Model in that area. Therefore the advanced Lowflow Simulation Model was designed which is based on existing Tank Model. And also the new model was combined with Discrete Differencial Dynamic Programming Model. They are called as Lowflow Management Model with Tank Dynamic Programming(LFMM-TKDP) and Lowflow Management Model with SSARR Dynamic Programming(LFMM-SRDP). As a result of applying a LFMM-TKDP and LFMM-SRDP to the Nakdong River Basin, there is an improvements to supply water at dry period in compare with existing Model.

스포츠 소비감정 연구에 대한 종합적 고찰

김기탁 서울대학교 스포츠과학연구소 2007 스포츠과학리뷰 Vol.1 No.2

본 연구는 스포츠 소비감정에 대한 최근 연구를 종합적으로 검토하여 관련 학자들과 실무자들에게 전반적인 이해를 제공하고, 스포츠 분야의 감정에 대한 향후 연구에서 다루어져야 할 이슈들을 제기함으로써 향후 연구방향에 시사점을 제기하고자 수행되었다. 스포츠는 대표적인 쾌락적 상품으로서 감정이 고객의 만족이나 구매 후 행동에 큰 영향을 미칠 것으로 예상할 수 있고, 이를 뒷받침하는 연구들이 다수 수행되었다. 본 연구에서는 스포츠 소비감정에 대한 개념, 차원, 측정도구, 다른 변인들과의 관계를 중심으로 고찰하였다. 감정에 대한 개념 정립은 여전히 명확하지 않은 것으로 나타났으며, 따라서 차원 및 측정도구도 연구자들에 따라 매우 다양하게 제시되어 왔다. 선행연구에서 나타난 감정의 선행변인은 서비스품질, 서비스가치, 소비경험, 자기개념 등이며, 스포츠 소비에서 유발되는 감정은 만족, 태도, 재구매의도 등에 영향을 미치는 것으로 나타났다. 스포츠 소비감정 연구에 대한 고찰을 통해 다음과 같은 향후 연구방향이 도출되었다. 첫째, 감정에 대한 개념 및 차원, 측정도구에 대한 지속적인 연구가 요구된다. 둘째, 스포츠 소비상황에서 감정을 유발시키는 요인들에 대한 깊이 있는 검토가 필요하다. 셋째, 다양한 스포츠 소비상황에서의 연구가 필요하다. 넷째, 스포츠 소비자의 감정을 다양한 시점에서 측정 할 필요가 있다. 마지막으로, 감정을 과학적으로 측정할 수 있는 방법을 연구해야 한다. This article reviewed the role of consumption emotion in the sport industry. Emotion is an important subject in consumer behavior and marketing since the 1980s. Also, we can easily expect that the role of consumption emotion is very important in sport consumption because sport related services are said to be consumed primarily for hedonic purposes. Thus, the various studies related to consumption emotion have been performed by researchers in sport field. In this article, definition, construction, scales of emotion, and relation between emotion and other variables were reviewed from the previous studies. Consumption emotion have been found to relate service quality, service value, consumption experience, self-concept, satisfaction, attitude, repurchase behavior. Furthermore, implications and suggestions for future studies were provided.

공급량 배분기법을 이용한 갈수기 병렬저수지 해석

박기범,이순탁 한국환경과학회 2006 한국환경과학회지 Vol.15 No.3