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6가크롬이 계배 간세포의 DNA , RNA , 및 단백질 함량에 미치는 영향
이종빈,양수인,위인선 ( Jong Bin Lee,Soo In Yang,In Sun Wui ) 한국환경생물학회 1988 환경생물 : 환경생물학회지 Vol.6 No.1
Cr^(6+)(1, 5 and 10㎍) was injected into the yolk sac of the fertilized eggs at certain time(0, 3 and 6 days) after incubation. At 14 days after incubation, the effects of Cr^(6+) on the mortality and the contents of the DNA, RNA and protein in surviving chick embryo liver were inverstigated. The other group injected Cr^(6+) at 13 days after incubation, the effects of Cr^(6+) on the contents of the macromolecules in chick embryo liver with the passing of time were investigated. When Cr^(6+) was injected just before incubation, the LD_50 was 10㎍. The longer and more expose to Cr^(6+), the more increeasingly the mortality and the decrease in the contents of the macromolecules. Decrease in the content of RNA was the most remarkable as compare to that of DNA or protein. It is suggest that the toxicity of Cr^(6+) firstly effect the transcriptional process. In the condition Cr^(6+) was injected into eggs which were incubated for 13 days. The contents of the macromolecules of liver after 3 days from injection decreased much more that of 1 day from injection. While, as time passed(after 5 and 7 days from injection) and contents of the macromolecules of liver recovered.
좁은 치조골에 변형된 치조능 분할술/확장술을 이용한 임플란트 동시 식립
이종빈(Jong-Bin Lee),이재홍(Jae-Hong Lee),김영택(Young-Taek Kim) 대한치과의사협회 2015 대한치과의사협회지 Vol.53 No.8
The modified ridge splitting/expansion technique combined with guided bone regeneration (GBR) for implant surgery is used to expand the narrow and atrophied edentulous alveolar ridge. Also, the simultaneous implant placement after ridge splitting/expansion technique can reduce the treatment and healing time. This case report includes three patients with a narrow edentulous alveolar ridge of the 2 to 4mm. All three patients underwent a fracture of thin buccal cortical bone plate, and these defects were corrected by the use of the guided bone regeneration (GBR). After 7 to 18 months, all surgical area was stable, and all implant showed a good healing state on the clinical and radiographic examination. In conclusion, though this surgical method is technique sensitive, the modified ridge splitting/expansion technique combined with GBR for implant surgery is recommended for a horizontal augmentation in the narrow edentulous alveolar ridge.
이종빈(Lee Jong-Bin),고성석(Go Seong-Seok) 대한건축학회 2003 大韓建築學會論文集 : 構造系 Vol.19 No.3
For the development of the safety management in construction site, the Safety Evaluation Index must be analyzed and reappraised. Therefore, the analysis of the Safety Evaluation Index is the essential to improve the safety management. Four organizations have made it and used it to evaluate in construction site. The Safety Evaluation Index of each organization has same regular items, but small regular items, which are included the regular items, are different from the each organization. Moreover, owing to the including the small regular items which are not related to the construction site, this paper is supposed to choose the essential small regular items and going to present the number of marks of the regular items according to the survey.
이종빈 ( Jong Bin Lee ),이준경 ( Jun Kyung Lee ),장성록 ( Seong Rok Chang ) 한국안전학회(구 한국산업안전학회) 2013 한국안전학회지 Vol.28 No.3
The goal of this study was to investigate some significant factors to influence level of safety at plant construction field and analyze degree of risk by work classification. Currently, there are lots of construction fields for the nuclear power plant for electricity generation, and our government also planned constructing more nuclear power plant in near future. However, much of the safety literature neglected the degree of risk factors on the plant construction field. Safety managers participated in the brainstorming session for drawing decision criteria of the degree of risk (i.e., significant factors). Then, they were asked to answer a structured questionnaire which was developed for drawing most important factors. Finally, the analytic hierarchy process (AHP) was used to analyze level of risk by work classification. The following results were obtained. First, total twelve factors judging degree of risk were found in the brainstorming session. Second, the questionnaire showed four significant factors, including number of workers, working environments, skill of brainstorming session. Second, the questionnaire showed four significant factors, including number of workers, working environments, skill of craft and accident experience. Third, the results of AHP showed Architecture work is the most dangerous work among 6 work types. The results could be used to reduce degree of risk in construction field of the nuclear power plant.
이종빈(Jong-Bin LEE),권혁철(Hyuck-Cheol Kwon),이성진(Sung-Jin Lee) 한국소성가공학회 2009 압연 심포지엄 Vol.2009 No.4
The high grade thick plate is in great demand in the ship building industry and the construction industry. The main problems to produce the high grade plate are residual stress and flatness of plate. In the previous research, Finite Element Analysis(FEA) was conducted for cold roller leveler to understand the behaviors of cold roller leveler under different conditions of thickness, intermesh, and yield stress. In this study, a numerical model of roller leveler is developed and the calculated results of this model are compared with the FEA results to show the validity of the numerical model. The optimal leveling conditions to improve flatness of plate are suggested using this numerical model.
Karasek의 Job Content Questionnaire와Korea Occupational Stress Scale의 비교 연구
이종빈 ( Jong Bin Lee ),장성록 ( Seong Rok Chang ) 한국안전학회(구 한국산업안전학회) 2015 한국안전학회지 Vol.30 No.1
According to the report of the WHO, workers have been exposed to much job strain such as job load, responsibility, role, interpersonal conflict etc. In Korea, studies on job strain started to become active from 1990s and now hundreds of studies are actively undergoing or publishing so that the studies are contributing to development and improvement of job strain. Representative measurement models of job strain are Job Strain Model of Karasek, Job Stress Model of NOISH, Korea Occupational Stress Scale, JSQ(Job Stress Questionnaire), K-OSI(Korea Version of Occupational Stress Inventory) etc. (Lee Kwan-Suk, 2012 ; KOSHA, 2003). Among them, Job Strain Model of Karasek had been loved by many researchers of job strain before Korea Occupational Stress Scale was developed. Job Strain Model of Karasek had been fitted to Korean style and then, used to analyze job strain of Korean people so that this Scale highly contributed to seeking relationship with cardiovascular disease, musculoskeletal disease caused by job, smoking, drug, alcohol poisoning, and pulse(Lee Kwan-Suk, 2012). But as this Model was studied and developed based on foreign culture and life pattern, amodel fit to Korea was developed to measure job strain for Korean people, which is Korea Occupational Stress Scale now most frequently used in measuring job strain. Accordingly, after this study made questionnaire survey about same population using the two me thods used most frequently in measuring job strain, the study investigated what features appeared, what correlations appear between two models, and comparatively analyzed characteristics each independent and dependent variable. Based on this, the study aimed to exactly express job strain of Korean people. The subjects of the study were a population of 233, and Karasek`s Questionnaire and KOSS`s Questionnaire were surveyed at the same time. The results were analyzed by statistical program to obtain significant difference between two models. Four particular groups were divided with Job Strain Model of Karasek and the four particular groups were measured with Korea Occupational Stress Scale. And job strain come from combination of two models was measured, with which new comparative analysis method was suggested