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물류창고 사고 예방을 위한 안전수칙 개선 방향: 상온창고와 저온창고를 중심으로
정병현,김기홍,박상철 대한안전경영과학회 2024 대한안전경영과학회지 Vol.26 No.1
When a fire breaks out in a distribution center, it causes a lot of damage. And the most casualties are caused by Fire accidents. Therefore, training for fire prevention should be mandatory at the distribution center. Also, the contents of education should be different in room temperature warehouses and low temperature warehouses. Fire education in low-temperature warehouses should be more emphasized. This is because many fires occur in low-temperature warehouses. In this study, a study was conducted to determine the important order of training hours and contents for fire prevention education according to the type of distribution center. The importance of time and content for safety education in all types of warehouses did not differ significantly. It was first decided that safety prevention training should be conducted periodically in all types of warehouses
기술사마당 - 국격과 정책품질관리(國格과 政策品質管理)
정병현,Jung, Byeong Hyun 한국기술사회 2013 技術士 Vol.46 No.1
2010년 이래 '국격'이라는 말이 정치지도자들이나 네티즌들 사이에 많이 회자되고 있다. 규격/표준은 '사실상의 표준[de facto standard]'과 '공적표준[de jure standard]'이 있다. 국가품질수준을 말하는 국격은 그 국가의 헌법에 규정되고 있는 내용이다. 국가의 공적인 표준인 헌법이 아무리 수준 높게 잘 제정되고 있어도 잘 준수되지 않으면 사실상의 국격은 낮게 인식된다. 한 두 프로젝트의 성공이나 어떤 정책의 성공이 당장 국격을 향상시킬 수 있는 것은 아니다 국격을 생각하는 사람은 과학과 기술을 생각해야 하는 시대이다. Since 2010, politicians and netizens have been frequently talking about "The Standard of a Nation". Specification/Standard contains "de facto standard" and "de jure standard". "The Standard of a Nation", the level of a state's quality, is prescribed by the constitution. Though the constitution, which is equal to a state's official standard, has been well established, it would be undervalued without civil obedience. The state standard can never be improved by a couple of successful projects or some national policies. The time is that the people who would like to level up of the state standard also should consider technology and science as important.
우수 포유동물 수정난의 이용효율 제고에 관한 연구 IV. 이식한 수정난의 착상율 증진에 관한 기초연구
정병현,정길생,김정익,김종배,이훈택,최석화,원성일 한국동물번식학회 1992 Reproductive & developmental biology Vol.16 No.2
These experiments were investigate the effects of bacterial infection of uterus and vagina during bovine embryo transferring on the development of embryo. We examined the distribution of reproductive disordered cow by akind of disease, identified the bacteria isolated from the vagina of those cows and bacterial infectin of media and its treatment with several kinds of antibiotics at that. The results obtained were summarized as follows ; 1. The total 592 reproductive disordered cows were caused by ovarian dysfunction(43.4%), ovary-uterus complication(24.5%), endometrities(17.7%), and repeat breeder(12.0%). 2. The main bacteria among 11 kinds of bacteria(113 colonies) was E. coli(38 colonies, 33.6%). Likewise, E. coli was propotioned to 23 and 22.7% among bacteria from vagina of endometritis and repeat breeder, respectively. 3. The sensitivities of viginal bacteria to pencillin and streptomycin were 6.2 and 4.4% respectively, but those to gentamycin and chloramphenicol were 22.1 and 16.8%, respectively. The similar sensitivities were found in the embryo recovery media. 4. The rates of bacterial infection of recovery medim and that of abnormal development of embryo were 75 and 80%, respectively. 5. The antibiotic sensitivity assay of ova recovery media showed gentamicin and chloramphenicol gave better results than streptomycin and penicillin. 6. The developmental rate of 1-cell stage mice embryos was 34.0% in bacterial infected culture media, but was 40.0, 58.0, 40.0 or 30.0% with the treatment of kanamycin, gentamycin, chloramphenicol, streptomycin, or penicillin, respectively.
Prostaglandin $F_{2\alpha}$, GTH 및 Antibiotics의 투여가 Repeat breeder의 치료에 미치는 영향
정병현 한국동물번식학회 1985 Reproductive & developmental biology Vol.9 No.1
After the induction of estrus by the PGFF2$\alpha$-GTH combination on the 118 repeat breeder cow during of 6-13 days of the estrus cycle, the effects of GTH, antibiotics, antibiotics-GTH combination were compared. The results of this study, the following conclusion were obtained: 1. The rate of estrus was reduced the administration of GTH before the administration of PGF2$\alpha$. 2. The rate of ovulation delayed was 24.6% in the group with the administration GTH, but 34.1% without the administration GTH. Duration of ovulation was shortened by GTH. 3. The impregnation induction by the administration of PGF2$\alpha$, PGF2$\alpha$-antibiotics, PGF2$\alpha$-GTH-antibiotics were 41.7%, 69.5%, 55.6% and 80.8% respectively injection in the uterus was more effective than the administration. Before or after the A.I., the above combination was most effective. 4. In antibiotics sensitivity test in vitro of the intravagina bacteria, 5.0%, 12.7% and 60.0% of bacteria were sensitive to Penicilline, Streptomycin and Gentamicin respectively.
유우의 번식장해 발생률과 번식장해우의 질내세균총에 관한 조사연구
정병현,Jeong B. H. 대한수의사회 1985 대한수의사회지 Vol.21 No.12
In these three and half years, the number of dairy cow diagnosed and treated at Veterinary Clinic, College of Animal Husbandary, Kun kuk University was amunted to 4510 heads of Holstein breed. In order to survey the aspect of reproductive failure incidenc