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Kyu-shik Jeong,정원일,Jae-yong Chung,Mi-young An,Chae-yong Jung,Gyoung-jae Lee,Jong-soo Kang,Byeong-cheol Kang,Young-heun Jee,Bruce H Williams,Young-oh Kwon,Da-hee Jeong 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2
Cirrhosis Occurring in a Young Woodchuck (Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus (WHV)Da-hee Jeong, Won-il Jeong, Jae-yong Chung, Mi-young An, Chae-yong Jung, Gyoung-jae Lee1, Jong-soo Kang1, Byeong-cheol Kang2, Young-heun Jee3, Bruce H Williams4, Young-oh Kwon5 and Kyu-shik Jeong*College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea1Shinwon Scientific Co., LTD, Research Institute, Suwon, Korea2Clinical Research Institute, Seoul National University, Seoul 110-744, Korea3College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea
시중에 판매되고 있는 아이스크림의 일반세균 및 대장균군 오염 실태
정다운,김영환,손종렬,변상훈 高麗大學校 倂設 保健大學 保健科學硏究所 2003 保健科學論集 Vol.29 No.1
Ice cream is a vastly consumed food enjoyed by a wide range of people. Therefore, it is easily accessible and amounts to hundreds of its kind. Ice cream is a ready-made food which could be served without undergoing cooking process and thus putting weight on its hygienic condition. And so we set out to conduct some research on the number of E-coli bactria contained in commercially sold ice creams. We applied Lactose broth method along with Desoxycholate agar method which enables us to verify the existence of E-coli bacteria and how much is contained. We focused our research on soft ice creams and aimed to seek out the degree to which they were contaminated by E-coli bacteria. 4 major distributors of soft ice cream out of 5 didn't meet the maximum allowance of E coli bacteria to be found. The number of general bacteria observed per 1 ㎖ of specimen must be held at less than 100,000, and this wasn't violated by any of the companies' samples. Yet on E-coli testing, all of K, L, B and M companies' samples respectively exceeded the permitted limits of bacteria to be detected.
재료의 흡수상태에 따른 콘크리트의 물리적 변화에 관한 기초적 연구
한다희,황병준,박희곤,이영도,정상진 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
Most concrete is recently made of an aggregate which is properly absorbed, and carried in it in order to do capability at every fields. We have been close to demand new capability of high flowing and enduring for specific concretes. That is difficult to cope with claiming the efficiency on deterioration from lack of a high quality aggregate. Therefore, For solving the problems we apply to a packing method for using dried materials. That is to say it is a kind of making into an instant. In this study, There is a purpose to present fundamental data, comparing and analyzing a phenomenon about aggregate's absorption following the rate of adding water, for using existing materials.
분말혼화제를 사용한 콘크리트 포장(包裝)화에 관한 기초적 연구
한다희,김영주,박무영,박희곤,이영도,정상진 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)
Most concrete is recently made of an aggregate which is properly absorbed, and carried in it according to its capability at every fields. We have been close to demand new capability of high flowing and enduring for specific concretes. That is difficult to cope with claiming the efficiency on deterioration from lack of a high quality aggregate. Therefore, For solving the problems we apply to method of packaged dry combined materials for concrete using dried materials. That is to say that it is a kind of making into an instant. In this study, There is a purpose to present fundamental data, comparing and analyzing a phenomenon of aggregate's absorption following the rate of adding water, for using existing materials.
건조 재료를 사용한 콘크리트의 포장화에 관한 실험적 연구
한다희,박희곤,백민수,김성식,이영도,정상진 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
Most concrete is recently made of an aggregate which is properly absorbed, and earned in it in order to do capability at every fields. We have been close to demand new capability of high flowing and enduring for specific concretes. That is difficult to cope with claiming the efficiency on deterioration from lack of a high quality aggregate. Therefore, For solving the problems we apply to a packing method for using dried materials. That is to say it is a kind of making into an instant. In this study, There is a purpose to present fundamental data, comparing and analyzing a phenomenon about aggregate's absorption following the rate of adding water, for using existing materials.
이혼가족 및 사별가족 아동에 대한 교사의 인식 : 내용분석(content analysis) 방법을 활용하여 Using a Content Analysis Method
성정현,송다영,한정원 한국가족사회복지학회 2003 한국가족복지학 Vol.- No.11
본 연구는 학령기 아동에게 중요한 영향을 미치는 교사의 이혼가족, 사별가족 아동에 대한 인식을 알아봄으로써 그 속에 내재된 일정한 편향의 여부와 그 내용을 분석하고, 아동의 가족지위에 따른 교사의 인식을 개선할 수 있는 사회복지 실천 방안들을 모색하는데 목적이 있다. 이를 위해 서울, 경기도, 전라도, 경상도 지역의 학교에서 근무하고 있는 초등학교 교사들 중 2002학년 여름방학동안 교사연수회에 참가한 초등학교 교사에게 사별가정 아동과 이혼가정 아동에 대해 기술하도록 하였으며, 총 328부를 대상으로 내용분석(content analysis)한 후 개념을 도출하여 빈도처리하는 방법을 활용하였다. 연구결과, 교사들은 한부모가족 아동들을 소극적이고 대인관계에서 위축되어 있으며, 학업준비 및 수행에서 저조하다고 평가하였다. 구체적으로 사별가족 아동들에 대해서는 소극적이고 우울한 것으로 평가한 반면, 이혼가정 아동에 대해서는 정서적으로 불안하고 우울하며, 공격성을 비롯한 문제행동의 우려를 높게 평가하였다. 전반적으로 이혼가정 아동에 대한 평가는 사별가정 아동에 비해 상대적으로 매우 부정적이었으며, 특히 가족관계에 있어서 부모의 무관심과 아동의 부모에 대한 부정적인 태도, 정서적 영역의 애정결핍, 부끄러움, 기타 영역에서 가정이야기 회피 등이 나타남으로써 사별가정 아동들이 부모 혹은 조부모의 관심을 받고 형제간 우애가 돈독하다는 평가와는 매우 상이한 결과가 나타났다. 이러한 결과를 통해 사별가족 아동과 이혼가정 아동에 대한 인식에서 차이가 나는 원인과 교사들의 인식의 타당성을 검토해보고, 교사들이 현 가족의 변화를 인식하고 아동들의 교육에 반영할 수 있도록 정보를 제공하고 아동을 원조할 수 있도록 돕는 학교사회복지 실천 프로그램의 필요성이 시사되었다. This research aims to examine the teachers' perceptions towards the children in one-parent families, to analyze the stereotypes of the teachers' perceptions on them, and thereafter to explore the social welfare practice strategies for them. The 328 elementary teachers respond to the open-ended questions for grasping the perceptions on family status. Using contents analysis methods, this research classifies materials with positive or negative evaluations, and categorises them with the concepts of affection, behavior, personality, attitude, personal relationships, school life, and so on. According to the research results, most teachers notice that the number of children in one-parent families are increasing at schools. However, they perceive on the children in one-parent families negatively. And their evalutions on children differ from one another in terms of the perceptions on the cause of children's becoming one-parent families. Generally, the children of dirvorced families received more negative evaluations than the children of one-parent families by death from teachers. Especially, in aspects of affection and behavior, teachers evaluate children of dovorced families negatively: they are depressive and anxious, aggressive, less take care from their parent, and less school achievement. And they have more behavior problems and passive peer relations than the children of one-parent families by death. Based on the results of this research, we propose that the social consciousness on one-parent families should be changed, and the educational training programs and school social work programs for teachers should be developed.
Contact electrification behaviors of micro-patterned polydimethylsiloxane
Jin Da Woon,Lee Dong Woo,Ko Young Joon,Jung Jong Hoon 한국물리학회 2021 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.79 No.1
We have investigated the contact electrification mechanism of identical materials using micro-patterned polydimethylsiloxane (PDMS) polymers. Commercially available sandpapers with various grit sizes were used for systematic control of the micro-patterns. Microstructure and hardness measurements revealed that the micro-patterns of sandpaper were successfully transferred to PDMS without significant change of the Young’s modulus. Clear triboelectric outputs were observed when contact separation was performed for identical PDMS polymers. The triboelectric outputs were significant when the microstructure was different, while the outputs were small when the microstructure was similar. These results were explained by the bond-breaking and ion/material transfer due to the roughness-induced temperature differences in identical PDMS polymers.
Da Hyun Jung,Young Hoon Youn,Hye Kyung Jung,Seung Young Kim,Cheal Wung Huh,Cheol Min Shin,Jung-Hwan Oh,Kyu Chan Huh,Moo In Park,Suck Chei Choi,Ki Bae Kim,Seon-Young Park,Joong Goo Kwon,Yu Kyung Cho,Ju 대한소화기 기능성질환∙운동학회 2023 Journal of Neurogastroenterology and Motility (JNM Vol.29 No.4
Background/AimsIt remains unclear which maintenance treatment modality is most appropriate for mild gastroesophageal reflux disease (GERD). We aimed to compare on-demand treatment with continuous treatment using a proton pump inhibitor (PPI) in the maintenance treatment for patients with non-erosive GERD or mild erosive esophagitis. MethodsPatients whose GERD symptoms improved after 4 weeks of standard dose PPI treatment were prospectively enrolled at 25 hospitals. Subsequently, the enrolled patients were randomly assigned to either an on-demand or a continuous maintenance treatment group, and followed in an 8-week interval for up to 24 weeks. ResultsA total of 304 patients were randomized to maintenance treatment (continuous, n = 151 vs on-demand, n = 153). The primary outcome, the overall proportion of unwillingness to continue the assigned maintenance treatment modality, failed to confirm the non-inferiority of on-demand treatment (45.9%) compared to continuous treatment (36.1%). Compared with the on-demand group, the GERD symptom and health-related quality of life scores significantly more improved and the overall satisfaction score was significantly higher in the continuous treatment group, particularly at week 8 and week 16 of maintenance treatment. Work impairment scores were not different in the 2 groups, but the prescription cost was less in the on-demand group. Serum gastrin levels significantly elevated in the continuous treatment group, but not in the on-demand group. ConclusionsContinuous treatment seems to be more appropriate for the initial maintenance treatment of non-erosive GERD or mild erosive esophagitis than on-demand treatment. Stepping down to on-demand treatment needs to be considered after a sufficient period of continuous treatment.
Dynamics of microbiome composition from placenta to fetus and neonate
( Da Young Kang ),( Moon Yeon Hwang ),( Sun Woo Choi ),( So Young Kim ),( Ji Eun Jung ),( Jae Hong Ryoo ),( Woo Yeon Hwang ),( Young Joo Lee ),( Byung Su Kwon ),( Young Sun Kim ),( Min Hyung Jung ) 대한산부인과학회 2023 대한산부인과학회 학술대회 Vol.109 No.-
New Breeding Technology: Development of Carrot Germplasm by Protoplast Fusion
Min Jung,Da-Hae Son,Da-Som Park,Ji-Young Hyun,Young-Woo Liu,Sih Woo Lee,Chee Hark Harn 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07
The most important factor in breeding program is to obtain the value-added genetic line. Generally, breeders develop genetic sources using several methods such as segregation-breeding, cross-breeding, backcross-breeding, mutation induction, tissue culture and so on. Here, we present one classical way but very valuable method called cell fusion or protoplast fusion to create genetic sources for the breeding practice. The method we developed was the asymmetric somatic-hybridization of protoplast isolated from carrots. This is rather to transfer the nucleus from the high quality F1 hybrid to other mediocre line to produce a new carrot line. Since the breeding a carrot line for higher quality and purity takes a long time, therefore this nuclear transfer technology is very beneficial to generate a new line that could be useful to breed elite varieties. We had obtained around 200 fused carrots (cybrids), 12 cybrids were self pollinated and produced seeds. Selected progenies (C3) have been evaluated for horticultural characteristics and we have found new genetic lines that show better phenotypes.