젖소의 번식장애 및 비임신진단을 위한 Milk Progesterone 측정 EIA-kit의 이용에 관한 연구

정병현,이병한,강영선,김진영,남형영,이강열,황윤식,양광헌,정길생,Chung, Byung-hyun,Lee, Byeong-han,Kang, Young-sun,Kim, Jin-young,Nam, Hyoung-young,Lee, Kang-yeol,Hwang, Yoon-sik,Yang, Kwang-hun,Chung, Kil-saeng 대한수의학회 1995 大韓獸醫學會誌 Vol.35 No.1

This study was carried out to investigate the effect, range of practice, and propriety for diagnosis of early non-pregnancies and reproductive disorders by dairy cows' milk progesterone analysis used EIA-kit of home products. The results were summarized as follows : 1. During 2 to 6 months after artificial insemination, the results of milk progesterone measurement by Home-kit and Auto ELISA reader-kit with pregnant dairy cows(152 heads) certified by rectal palpation were revealed, in Home-kit, 145 heads(95.4%) of positive reaction, 7 heads(4.6%) of quasi-positive, and 0 heads(0%) of negative among 152 heads and, in Auto ELISA reader-kit, 152 heads(100%) of positive reaction among 152 heads. 2. During 19 to 22 days after artificial insemination, the results of milk progesterone measurement by Home-kit, and thereafrer during 50 to 90 days after that, the results of pregnant test by rectal palpation were summarized as follows : 147 heads(82.1%) among 179 heads of positive reaction by Home-kit and 5 heads(31.3%) among 16 heads of quasi-positive were revealed pregnant cows by rectal palpation, and 42 heads(100%) among 42 heads of negative were non-pregnant. 3. During 19 to 22 days after artificial insemination, the results of milk progesterone measurement by Auto ELISA reader-kit, and thereafrer during 50 to 90 days after that, the results of pregnant test by rectal palpation were summarized as follows : 146 heads(86.9%) among 168 heads of positive reaction by Auto ELISA reader-kit and 6 heads(28.6%) among 21 heads of quasi-positive were revealed pregnant cows by rectal palpation, and 48 heads (100%) among 48 heads of negative were non-pregnant. 4. For the accuracy of the rectal palpation, Home-kit and Auto ELISA reader-kit were used in the cows of ovarian diseases. The results were following : in the cows of reproductive disorders expected negative milk progesterone, the accuracies of rectal palpation were the same 75.5%(40 heads among 53 heads) by Home-kit and Auto ELISA reader-kit, and in the cows of reproductive disorders expected positive milk progesterone, the accuracies of rectal palpation were 82.6%(19 heads among 23 heads) and 91.3%(21 heads among 23 heads) by Home-kit and Auto ELISA reader-kit, respectively, and the general accuracies of rectal palpation were 77.6%(59 heads among 76 heads) and 80.3%(61 heads among 76 heads) by Home-kit and Auto ELISA reader-kit, respectively.

철도안전관리체계 비교 연구

정병현(Chung Byung-Hyun),문대섭(Moon Dae-Seop) 한국철도학회 2003 한국철도학회 학술발표대회논문집 Vol.- No.-

The purpose of this study is the suggestion for national railroad system policy at the changing environment such as rail restructuring and high speed rail open in 2004, especially railroad safety management system through the comparison between countries. This kind of comparative study will give the effective measure for building the safety management and ensuring their roles of organizations, construction authority and operating companies.

일본의 철도 모달시프트 사례분석 : H사의 사례를 중심으로

정병현(Chung Byung-Hyun),문대섭(Moon Dae-Seop),김현웅(Kim Hyun-Woong) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-

A lot of efforts are inclined by concluding the Kyoto Protocol in Japan for the exhaust decreasing of the CO₂ gas in 1997. The Japan Ministry of Land, Infrastructure, Transport and Tourism is promoting various policies through various policies such as `new synthesis logistics policy", "green logistic partnership meeting", establishment of "logistics efficiency law" etc. The modal shift case that the individual logistic company in Japan was promoting under such a policy was analyzed in this research, and a modal shift on the distribution site was very promoted, and applicability in our country was examined through the instruction point to this in the future.

철도사고조사제도 개선에 관한 연구

정병현(Chung Byung-Hyun),문대섭(Moon Dae-Seop),왕종배(Wang Jong-Bae) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-

Recently, fundamental innovation for the improvement of Korean railway industry is proceeding with the vertical separation into infrastructure and operation, and the privatization of railway operation. And also, with the advent of an era of high-speed railway, starting of Korea Train Express (KTX) will give a great change to circumstances of railway industry. It requires that a railway safety regulation policy and accident survey system cope effectively with this restructuring of railway system. Under these great changes, safety must have the first priority, and the function of management and supervision on railway safety will be left to the governments responsibility; In this paper, according to changes of railway safety management system, foreign states railway accident system and direction of korea railroad accident survey system will be also introduced.

철도에서의 인시던트 보고제도와 안전문화에 관한 연구

정병현(Byung-Hyun Chung) 한국철도학회 2010 한국철도학회논문집 Vol.13 No.2

철도에서의 물류공동화 적용 방안에 관한 연구

정병현(Byung-Hyun Chung) 한국철도학회 2011 한국철도학회논문집 Vol.14 No.5

飼料加工에 對한 衛生學的 硏究

Choe Byung Kyu(崔炳圭),Lee Won Chang(李元暢),Kim Sang Jae(鄭柄鉉),Chung Bung Hyun(金尙材) 한국예방수의학회 1983 예방수의학회지 Vol.7 No.1

A study was carried out on the isolation of fungi flora from the corn feed in Korea, which were important not only in the Feed technical Science and Veterinary Science but also in animal and human health. It hoped that the information will be used for reference in future endeavors of study in the field of feed science and technology. The obtained are summerized as follows: 1. Ninety strains of fungi isolated were classified on a accordance with key(Barron’s generic key of Hypomycetes, Ainsworth’s classification of the fungi and Raper and Fennell’s Group or species key of Aspergillus): 10 strains (11.1%) were Phycomycetes, 60 strains(66.6%) were Ascomycetes and 20 strains (223.3%) were Fungi imperfecti(Deuteromycetes). The genus of fungi isolated from corn feed were Abisidia(1.1%), Rhizopus (10.0%), Aspergillus (51.1%), Penicillium (15.5%), Candidia (6.7%), Trichosporon (6.7%), Geotrichum (1.1%) Fusarium (6.7%) and Wallemia (1.1%). It was found that Aspergillus and Penicillium group were more dominant over other groups. 2. Forty-six strains of Aspergillius obtained were subdivided into 9 stains of A. flavus, which formed 19.6% of total isotateds 6 strains or 13.0% of A. terrus and A. chevalieri, 5 strains or 10.9% of A. fumigatus and A. cnadidus, 4 strains or 8.7% of A. niger, strains or 4.3% of A. flavus var. columnaris, A. oryzae and A. repens, and one strain or 2.2% of A. clavatus, A. versicolor, A. sydowi, A. janus and A. sulphureus, repectively. 3. The fungi isolates varied according to condition of corn feeds. a) In the case of contamination of fungi in imported corn was more than that in native corn. b) Tn the case of contamination of fungi in corn storage of Sac form was higer than that of Bulk form. c) In the case of isolated rate of fungi in corn by feed processing course of Simple system was more than that of Complex system.

근골격계 질환 예방에 관한 연구: 화물운전자를 중심으로

김기홍,정병현,Kim, Ki Hong,Chung, Byung Hyun 대한안전경영과학회 2021 대한안전경영과학회지 Vol.23 No.2

The possibility of developing musculoskeletal disorders increases with the length of service of the worker. Musculoskeletal disorders can occur when performing repetitive and forceful movements. Therefore, Cargo drivers operate repeatedly in the wrong posture for a long time. When loading and unloading a cargo, the cargo driver works repeatedly with force. Cargo operators are also exposed to musculoskeletal disorders in the working environment due to poor posture and repetitive movements. In this study, we are going to conduct a study on the level of awareness and prevention of the possibility of musculoskeletal disorders in cargo drivers for long periods of time. As a result of the study, the factors that cause musculoskeletal disorders in each group can occur during the long-term operation and preparation of drivers.

완전정맥마취와 휘발성유도/유지마취에서 정량적 뇌파를 이용한 마취심도의 감시

이수한,노규정,정병현,Lee, Soo-Han,Noh, Gyu-Jeong,Chung, Byung-Hyun 대한수의학회 2006 大韓獸醫學會誌 Vol.46 No.1

To evaluate method for monitoring anesthetic depth with quantitative electroencephalography (q-EEG), we recorded processed EEG (raw EEG) and pain score till 100 minutes in beagle dogs anesthetized for 60 minutes with propofol (n = 5, PRO group), isoflurane (n = 5, ISO group) and propofol-ketaminefentanyl (n = 5, PFK group). Raw EEG was converted into 95% spectral edge frequency (SEF) by fast Fourier transformation (FFT) method. We investigated anesthetic depth by comparing relationship (Pearson's correlation) between q-EEG (95% SEF) and pain score. Pearson's correlation coefficients are +0.2372 (p = 0.0494, PRO group), +0.79506 (p < 0.001, ISO group) and +0.49903 (p = 0.0039, PFK group).

토끼에서 저체온증의 유발에 의한 생리학적 및 임상병리학적 변화

이병한,한진수,정병현,Lee, Byeong-han,Han, Jin-soo,Chung, Byung-hyun 대한수의학회 1998 大韓獸醫學會誌 Vol.38 No.4

The studies were carried out to investigate the phygiological changes in deep hypothermia in rabbits. Sixty rabbits were continuously cooled with femoral arterio-venous bypass circulation to rectal temperatures of $34.0{\pm}0.3^{\circ}C$(mild hypothermia), $30.0{\pm}0.3^{\circ}C$(moderate hypothermia), and $25.0{\pm}0.3^{\circ}C$(deep hypothermia). The results obtained in these experiments were summarized as follows : In mild, moderate, and deep hypothermia, MAP, HR, RR, pH, $pCO_2$, $pO_2$, $Na^+$, $K^+$, HCT, PLT, glucose, L-lactate, BUN, and creatinine were analyzed. During hypothermia, a statistically significant decrease of MAP occurred between $30^{\circ}C$ and early $25^{\circ}C$(Start) of rectal temperature while significant increases occurred between baseline($38.7^{\circ}C$) and $30^{\circ}C$. Significant decreases of HR and RR were observed in the rabbits, particularly those changes appeared to similar patterns in proportion to hypothermia. Significant decreases of pH occurred between $34^{\circ}C$ and $25^{\circ}C$, and significant increases of $pO_2$ and $pCO_2$ were observed continuously in the hypothermic rabbits. The hypothermia had no significant effect on blood $Na^+$ and serum creatinine. Blood $K^+$ significantly decreased from $3.1{\pm}0.5$(baseline) to $2.6{\pm}0.6mmol/l$($34^{\circ}C$) with the hypothermia for about 30 minutes, and significantly increased from $2.4{\pm}0.6$($25^{\circ}C$(S)) to $2.7{\pm}0.5mmol/l$($25^{\circ}C$(E)) with the hypothermia for 2 hrs. HCT significantly increased to $34^{\circ}C$, thereafter, continuously increased to $25^{\circ}C$(Start, End). PLT increased to $34^{\circ}C$, thereafter, continuously decreased to $25^{\circ}C$(Start, End). Also PLT decreased significantly from 414.3($30^{\circ}C$) to $308.8{\times}103/mm^3$($25^{\circ}C$, Start). Significant increases of blood glucose and L-lactate occurred between $30^{\circ}C$ and $25^{\circ}C$ (Start, End). Slight increase of serum BUN continuously appeared with the hypothermia. These results, such as characteristic changes of the significant decrease of pH and PLT at $34^{\circ}C$, the significant decrease of MAP at $30^{\circ}C$, and the significant increase of glucose and l-lactate at $30^{\circ}C$, suggest that homeostasis of rabbits to hypothermia rapidly decreases at $34{\sim}30^{\circ}C$ of rectal temperature. Therefore, we suggest that, during the period with the rapidly decreased homeostasis, the very carefully control and treatment need to recover hypothermic animals under the circumstances of the various hypothermic experiments and emergency medicine.