젖소 足皮膚炎에 대한 오존연고의 治療 效果

이수진,전무형,조성환,김덕환,박창식,김명철 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

Thirty dairy cows with pododermatitis were selected and treatment effect of ozone ointment for bovine pododermatitis was investigated. In addition, bactericidal effect of ozone ointment on etiological agent of bovine pododermatitis was evaluated. The pathohistological examination for the pododermatitis, according to application with ozone ointment was investigated. Thirty dairy cows were divided two groups: control group(vaseline group: 15 cows), treatment group(ozone ointment group: 15 cows). Various parameters were evaluated in terms of the lameness score, swelling score, lesion score, WBC, neutrophil, pathohistological finding, and antimicrobial action. As compared with vaseline group, ozone ointment group revealed significant decrease of lameness (p<O.05), swelling (p<O.O1) and lesion score (p<O.05) were shown in hoof lesions on 14 days after application. In hematological findings, WBC count revealed slightly high values within normal range before treatment, however, this was I Corresponding author improved on 14 days after application of ozone ointment. The number of neutrophils was slightly higher than that of normal, however. this was improved on 14 days after application of ozone ointment. In pathohistological findings, normal dermal tissue was found in tissues with pododermatitis on 14 days after application of ozone ointment. In antimicobial action, marked decrease rate of bacteria was observed in feet of all cases treated with ozone ointment. The decreasing rate of bacteria in anaerobic culture was higher than that in aerobic culture.

2 Parameter Criterion을 이용한 안정성 평가에 관한 연구

이종형,유덕상,박무수 國立金烏工科大學校附設生産技術硏究所 1997 産業技術開發硏究 Vol.13 No.-

In this paper, the following results about character stics of surface fatigue crack are obtained by △p decreasing experiment and crack generation using SPPS 42 of pipe-use carbon steel. The △Kthe of surface crack is smaller than the △Kth of through crack. Therefore, if the △Kth of through crack is used as defect estimation, it becomes dangerous. The validity of Engineering safety is represented establishing fatigue fracture estimation diagram by the 2 parameter criterion of threshold and fatigue limit.

리튬 이온 2차전지용 Anode 재료의 제조와 그 특성 고찰

이주성,정윤이,변지형,박은성,유덕영 한양대학교 에너지·환경기술연구소 1997 에너지·環境技術論文集 Vol.3 No.-

Carbon materials, disordered carbon and KS6(graphite, Lonza), were studied as anode materials of lithium ion secondary battery. The disordered carbons were made from thermosetting resins (phenol resin, furan resin, acetylene resin and its mixed resin). The resins were carbonized in nitrogen gas at 1000℃. When the thermosetting resins were carbonized, an addition of lithium hydroxide improved capacity and cycle life, but decreased the efficiency of the first charge/discharge. Also, in this study, the capacity of the carbon from phenol resin was higher than that of the carbon from acetylene resin or furan resin. But, the carbon from mixed resin was the highest capacity of all the synthetic carbons.

고기능 전력변환 이중데드비트 전류 제어기

이진섭,정해덕,백형래 조선대학교 에너지.자원신기술연구소 2000 에너지·자원신기술연구소 논문지 Vol.22 No.1

This paper describes a new digital control system based on the model state equations and a prediction method of the load current for PLW inverter with DC link. A new technique used dead beat theory to obtain a sinusoidal PWM inverter output voltage with LC filter has been presented. The dead schemes possess one sample delay in theses controlled signal which can compensate by prediction of the reference wave of the load current at next sample time. Load current prediction which has quick response is applied to compensate the random and high frequency components. This proposed control inherently is verified vary good sinusoidal output wave synthesis of voltage and current, providing accurate phase positioning for various load and excellent transient response. The experimental implementation of the system uses a real time TMS320C31 DSP(Digita1 Signal Processor)based digital controller.

플라즈마 표지소자의 제작

이상윤,라병욱,박동수,황인헌,이덕동,신영남,박성배,이동욱,박용석,박형근,손상호,권태근,채경락,정경득 慶北大學校 自然科學大學 1986 自然科學論文集 Vol.4 No.-

An Ac-type Plasma Display Panel (PDP) operating with Ne-Ar(0.1%) Penning mixture gas is fabicated. The characterics of the panel with electrodes covered with thin and thick dielectric layers are studied. The brightness of the Neon-orange light emitted by the panel measured as function of applied voltage and frequency. As an application, a graphic display system equipped with PDP showing still and moving pictures is made.

동물원에서 사육중인 Japanese Macaque (Macaca fuscata)에서 Zoletil 마취에 관한 연구

이재일,이수진,홍성혁,신남식,김덕환,박창식,전무형,조종민,김영석,김명철 충남대학교 형질전환복제돼지연구센터 2004 논문집 Vol. No.8

To evaluate the effects of Zoletil (tiletamine-zolazepam) that have been widely used for the chemical restraint and anesthesia of primates, on physiologic alteration, blood gas analysis and anesthetic duration in the Japanese macaque(Macaca fuscata), this study was carried out. Zoleril was administered by intramuscular injection, Evaluation of temperature, heart rate, respiration rate and blood gas analysis were performed before administration ancl at 1,10, 20, 30, 40, 50 and 60 min after administration, and induction and maintenance time was recorded. There was no significant difference in heart rate, PCO₂PO₂after Zolcril administration and temperature, respration rate, pH were significant difference compared with those of before administration, The induction time was 2.5±l.Omin and maintenance time was 86±23.2min. It was considered that Zoletil could he usefully used for the sedation and immobilization of Japanese macaque reared in zoological garden.

젖소 足皮膚炎에 대한 오존수의 治療 效果

이수진,조성환,전무형,김덕환,박창식,한홍율,김명철 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

This study was carried out to determine therapeutic the effect of ozonated water therapy on bovine pododermatitis. In addition, bactericidal effect of ozonated water on etiological agent of bovine pododermatitis was examined. The pathohistological examination for the pododermatitis, according to application with ozonated water and ozone ointment was investigated. Thirty healthy cattle were divided two groups(each of 15) : control group (povidone group), treatment group (ozone solution group). Various parameters were evaluated in terms of the lameness score, swelling score, lesion score, WBC count, neutrophil count, pathohistological finding, and antimicrobial action. The decrease of lameness and lesion score were shown in hoof lesions on 14 days after application of ozonated water. Significant decrease of swelling was shown in hoof lesions on 14 days 1 Corresponding author after application of ozonated water(p < 0.01). In hematological findings, WBC count revealed values within normal range. The number of neutrophils was slightly higher than that of normal, however, this was improved on 14 days after application of ozonated water. In pathohistological findings, recovery was rapid macroscopically and microscopically in the treatment with ozonated water on the hoof lesions and ozonated water was effective. In antimicobial action, bactericidal effect was observed in treatment with ozonated water on the hoof lesions and ozonated water was effective.

숨은 詩人의 그림자 : 보리스 빠스쩨르나끄 작품 속의 詩的 自我의 변형에 관하여

이덕형 서울대학교러시아연구소 1992 러시아연구 Vol.1 No.-

보리스 빠스쩨르나끄의 첫 번째 시집《구름 속의 쌍둥이》를 배태시킨 1914년을 전후한 시기는 러시아 사회의 정치적ㆍ역사적 기복만큼이나 다양하고 격동적인 변화를 러시아의 예술분야도 또한 치워 내야 하던 때였다. 시적 표현의 신선함을 추구하였던 말라르메, 베를렌느, 보들레르 등의 프랑스 상징주의자들과는 달리, 블라지미르 솔로비요프의 기독교적 신비철학을 바탕으로 벨르이와 블로크, 기피우스와 부를뤽 등에 의해 새롭게 정착된 러시아의 상징주의가 문예사조를 초월해 하나의 형이상학, 하나의 철학적 세계관이 되기를 바라고 있었고, 작게는 뱌체슬라브 이바노프와 철학자 바실리 로자노프가 빼쩨르부르그 문학써클에서, 예수와 디오니소스간의 미학적 결합을 대담하게 토론하던 러시아 시문학운동의 개화기이기도 했다.

금속소결 마찰재의 마찰 및 마모특성에 관한 연구

이종형,유덕상 금오공과대학교 산업기술개발연구원 2001 産業技術開發硏究 Vol.17 No.-

This study investigates the characteristics of the metal powders which are used for the friction elements after mixing, compaction , and sintering. The powders with the proper size were selected to be mixed in the V-mixer for four fours, and to be compacted by 36 tons of the load. The initial density of the compacted specimen(green body) was measured, and the body was back plated by the SM20C which was electro plated by copper using the paste to give the improved bending strength. Then the back plated bodies are fully dehydrated, and were sintered in the hot press at 850℃ for two hours. Mechanical properties such as density, hardness, porous rate coefficient of friction, and wear rate were measured for the sintered bodies to investigate the possibility of obtaining the sintered friction element with the improved characteristics.

소 傳染性鼻氣管炎 바이러스에 대한 monoclonal antibody 生産과 診斷法 開發 : Ⅱ. Monoclonal antibody를 이용한 소 傳染性鼻氣管炎의 診斷 Ⅱ. Diagnosis of infectious bovine rhinotracheitis by using monoclonal antibody

全茂炯,金德煥,安壽煥,李重馥,閔元其 충남대학교부설 생명공학연구소 1991 생물공학연구지 Vol.1 No.-

To develop more specific and sensitive diagnostic methods for infectious bovine rhinotracheitis, 7-C-2 monoclonal antibody specific to polypeptides of infectious bovine rhinotracheitis virus (IBRV) was applied in indirect immunofluorescence antibody assay(IFA), indirect immunoperoxidase assay(IPA) and radial immunodiffusion enzyme assay (RIDEA). It was found that IBRV infected in MDBK cells could be detected as early as 8 hours post infection by IFA, and that IFA was more rapid and specific to identify IBRV antigen than IPA. The diagnostic efficacy of RIDEA and SN test was studied with 88 bovine sera. It was evident that RIDEA could eliminate the false positive reaction encountered in serum neutralization(SN) test, being more rapid and sensitive than the latter. Highly significant correlation coefficiency(r=0.76, p<0.01) was evaluated between the titers of sera and the diameters of RIDEA. Tracheal membranes and sera collected from 96 slaughtered cattle with lesions in respiratory organs were examined to detect IBRV antigen and antibody by IFA, RIDEA and SN test. It was presented that positive rates were 32.3% in IFA, 20.8% in RIDEA and 21.9% in SN test, and that coincidence rate between RIDEA and SN test were 100% in positive sera and 98.7% in negative sera. In conclusion, it was assumed that application of monoclonal antibody could improve the diagnostic efficacy of IBR by enhancing sensitivity and specificity of IPA, IFA and RIDEA.