Salinomycin 飼料添加가 反芻動物 第一胃內 微生物과 그 活性에 미치는 影響에 關한 硏究

李學喆,李垠 영남대학교 자원문제연구소 1984 資源問題硏究 Vol.3 No.-

The present experiments were conducted to determine the effect of feeding salinomycin on rumen bacterial flora and protozoal fauna, on bacterial activity involving amylase and urease, on ruminal pH and volatile fatty acids. Eight Korean native goats averaging 19.3kg of body weight were randomly alloted to the diets supplmented with salinomycin at the level of 0 and 30 ppm. After 3 week adaptation period the animals were fed the experimental diet. Ruminal fluids were collected and examined just before feeding. and 4, 8 hours after feeding on days 0, 7, 14. 28 and 42. 1. The total number of ruminal protozoa was markedly decreased with salinomycia diet from the 7th to 14th day, although it was gradually increased after that, it was not recovered at the end of experiment. A significant difference (p<.05) among treatments could be noted in the total number of ruminal protozoa throughout the experimental period. 2. A total of 14 protofoal species were detected throughout the experimental period: 3 species in Isotrichidae, 11 species in Ophryoscolacidae. The number of protozoal species of salinomycin group was lower than that of control group and the number of Holotricha was increased in salinomycin group. 3. The total of ruminal bacteria tended to increase in salinomlrcin group but no significant difference (p>.05) was observed among treatments and the changes in distribution of bacterial type were similar among treatments. 4. The bacterial fluctuation pattern was varied with bacterial types and the total number of Gram-negative bacteria increased with salinomycin diet, while that of Gram-positive bacteria decreased.

도축돈에서의 Haemophilus Pleuropneumoniae 감염에 관한 연구

이학철,유병삼,Lee Hak-Cheul,Yoo Byong-Sam 한국임상수의학회 1986 한국임상수의학회지 Vol.3 No.1

In recent years much attention has been paid to swine respiratory infection caused by Haemophilus(H.) Pleuropneumoniae with rapid expansion of pork industry in Korea. The organism may cause an acute respiratory infection with high morbidity and mortality, or it may also cause chronic persistent infection, resulting in loss of body weight. The present study was performed to observe the etiologic situation of H. Pleuropneumoniae infection by evaluating bacteriological, serological examinations with the lungs and sera collected from slaughtered pigs in Daegu city, respectively. In addition, antibiotic susceptibility test was carried out against the isolated strains of H. Pleuropneumoniae. The results obtained are summarized as follows : 1. Only 10 strains of H. Pleuropneumoniae were isolated from the 120 cases of swine lungs examined, and biological and biochemical characteristics of the isolates were identical with that of standard strains(serovar 1 to 6). 2. Out of 336 swine sera examined, 108(32.1%) were shown to be positive against H. Pleuropneumoniae by latex agglutination test. 3. Antibiotic susceptibility test revealed that 10 isolates of H. Pleuropneumoniae were sensitive to 16 kinds of antibiotic such as ampicillin, benzylpenicillin, piperacillin, cephalothin, cefazolin, cefamandol, cefoperagon, lactomoxycefa, tetracycline, minocycline, chloramphenicol, gentamicin, kanamycin, amikacin, colistin and nalidixic acid, whereas cloxacillin, erythromycin, kitasamycin, lincomycin, oleand-amycin, and bacitracin were resistent.

도축돈에서 Pasteurella multocida의 분리, 분리주에 대한 미생물학적, 혈청학적성상 및 항생물질의 감수성조사와 돈폐에 대한 병리학적 관찰에 관하여

이학철,함태수,정유열,조성룡,이재현,Lee Hak-Cheol,Ham Tai-Soo,Chung Yoo-Yeol,Cho Seong-Lyong,Lee Jag-Hyeon 한국임상수의학회 1989 한국임상수의학회지 Vol.6 No.2

In recent years much attention has been paid to swine respiratory infection caused by Pasteurella(P) multocida with rapid expansion of pork Industry in Korea. The present study was performed to observe the etiologic situation of P. multocida infection by bacteriological, serological(serotyping) and pathological examinations with the lungs respectively. In addition antibiotic susceptibility test was carried out against the isolated strains of P. multocida. The results obtained are as follows : 1. Eighteen strains(12.8%) wert isolated from the 140 cases of swine lungs examined, and biological and biochemical characteristics of the isolates were the sam as those in the references of other workers, whereas some differences were observed in sugar fermentation and enzyme activity according to the strain of isolates. 2. Capsular serotyping performed on 18 P. multocida revealed that 13 strains(72.2%) were A type and 5 strains(27.8%) were D type, respectively. 3. When serotyping was performed against somatic antigen on 18 strains capsular types of which were identified as described above 9(50%), 3(16.7%) and 4(22.2%) strains belong to 1:A, 3:A and 2:D, respectively, but untypable 2 strains(11.1%) were observed. 4. Antibiotic susceptibility test by employing disc method for 24 kinds of drugs revealed that 15 kinds of antibiotics were sensitive to 18 strains of P. multocida isolated such as ampicillin(l00%), penicillin(100%), cloxacillin(56%), piperacillin(70%), cefotaxime(30%), minocycline(60%), chloramphenicol(95%), erythromycin(39%), kanamycin(17%), gentamicin(70%), amikasin(30%), colistin(78%) and nalidixic acid(5%), respectively, but resistant to 9 kinds of antibiotics such as sulpenicillin, cefazolin, cephalothin, cefametazol, cefoperazone, kitasamycin, oleandomycin. lincomycin and bacitracin. 5. Pathological features of 60 cases of swine lungs indicated that pneumonic .lesions were observed in 38 cases(63.3%) examined by macroscopic finding, in which lesions of 8 cases(13.4%) would correspond to those of mycoplasmal infection, and 30 cases(50%) were similar to viral infection by histopathological finding, whereas 22 cases(36.7%) were considered to be normal by ecropsy or histopathological finding.

2급 치근분지부 병소에서의 생분해성 차폐막의 효과

이학철,한승민,설양조,이철우,엄흥식,장범석,정종평,한수부,Lee, Hak-Churl,Han, Seoung-Min,Seol, Yang-Jo,Lee, Chul-Woo,Um, Heung-Sik,Chang, Beom-Suk,Chung, Chong-Pyoung,Han, Soo-Boo 대한치주과학회 1999 Journal of Periodontal & Implant Science Vol.29 No.3

The purpose of this 6-months study was to compare the clinical and radiographic outcomes following guided tissue regeneration treating human mandibular Class II furcation defects with a bioabsorbable BioMesh barrier(test treatment) or a nonabsorbable ePTFE barrier(control treatment). Fourteen defects in 14 patients(mean age 44 years) were treated with BioMesh barriers and ten defects in 10 patients(mean age 48 years) with ePTFE barriers. After initial therapy, a GTR procedure was done. Following flap elevation, root planing, and removal of granulation tissue, each device was adjusted to cover the furcation defect. The flaps were repositioned and sutured to complete coverage of the barriers. A second surgical procedure was performed at control sites after 4 to 6 weeks to remove the nonresorbable barrier. Radiographic and clinical examinations(plaque index, gingival index, tooth mobility, gingival margin position, pocket depth, clinical attachment level) were carried out under standardized conditions immediately before and 6 months after surgery. Furthermore, digital subtraction radiography was carried out. All areas healed uneventfully. Surgical treatment resulted in clinically and statistically equivalent changes when comparisons were made between test and control treatments. Changes in plaque index were 0.7 for test and 0.4 for control treatments; changes in gingival index were 0.9 and 0.5. In both group gingival margin position and pocket depth reduction was 1.0mm and 3.0mm; clinical attachment level gain was 1.9mm. There were no changes in tooth mobility and the bone in radiographic evaluation. No significant(p${\leq }$0.05) difference between the two membranes could be detected with regard to plaque index, gingival index, gingival margin position, pocket depth, and clinical attachment level. In conclusion, a bioabsorbable BioMesh membrane is effective in human mandibular Class II furcation defects and a longer period study is needed to fully evaluate the outcomes.

닭의 호흡기병에 관하여

이학철 대한양계협회 1970 월간 양계 Vol.4 No.-

LMS NVH Test Solution

이학철 한국소음진동공학회 2010 한국소음진동공학회 학술대회논문집 Vol.2010 No.4

노인 환자에서 Quetiapine에 의해 발생한 급성췌장염 1예

이학철,최종경,고정아,김선재,주성택,김시은,최승규,남승우,권혁춘,정주원,정인아 대한노인병학회 2015 Annals of geriatric medicine and research Vol.19 No.3

Quetiapine is an atypical antipsychotic that is frequently used to manage delirium in geriatric patients. Acute pancreatitis associated with quetiapine has rarely been reported. A 70-year-old male presented with severe abdominal pain a few hours after taking a dose of quetiapine prescribed for delirium. Despite the lack of risk factors of pancreatitis in his medical history, the patient had a slight increase of serum lipase and amylase levels. His general condition improved on discontinuation of quetiapine. A month later, quetiapine was readministered for the recurrence of delirium. Subsequently, the patient developed the same symptom with a significant increase in serum pancreatic enzyme levels, confirming that quetiapine induced the pancreatitis. We reported the first case of quetiapine-induced pancreatitis in Korea, together with a review of the literature.

농외소득 새마을운동을 통한 농외소득향상의 전략

이학철 대한지방행정공제회 1977 地方行政 Vol.26 No.282

N/A

屠畜豚에서 Pasteurella multocida의 分離, 分離株에 대한 微生物學的, 血淸學的性狀 및 抗生物質의 感受性 調査와 豚肺에 대한 病理學的 觀察에 관하여

이학철,함태수,정유열,조성용,이재현 영남대학교 자원문제연구소 1990 資源問題硏究 Vol.9 No.-

In recent years much attention has been paid to swine respiratory infection caused by Pasteurellα (P.) multocidα with rapid expansion of pork industry in Korea. The present study was performed to observe the etiologic situation of P. multocidα infection by bacteriological, serological (serotyping) and pathological examinations with the lungs, respectively. In addition antibiotic susceptibility test was carried out against the isolated strains of P. multocidα. The results obtained are as follows. 1. Eighteen strains (12.8% ) were isolated from the 140 cases of swine lungs examined, and biological and biochemical characteristics of the isolates were the same as those in the references of other workers, whereas some differences were observed in sugar fermentation and enzyme activity according the strain of isolates. 2. Capsular serotyping performed on 18 strains P. multocidα revealed that 13 strains (72.2%)were A type and 5 strains (27.8%) were D type, respectively. 3. When serotyping was performed against somatic antigen on 18 strains capsular types of which were indentified as described above 9 (50%), 3 (1 6.7%) and 4 (22.2%) strains belong to 1 : A, 3 : A, 2 : D, respectively, but untypable 2 strains (11.1%) were observed. 4. Antibiotic susceptibility test by employing disc method for 24 kinds of drugs revealed that 15 kinds of antibiotics were sensitive to 18 strains of P. multocidα isolated such as ampicillin(100%), penicillin (100%), cloxacillin (56%), piperacillin (70% ), cefotaxime (30% ), minocycline (60%), chloramphenicol (95%), erythromycin (39%), kanamycin (17%), gentamicin (70%), amikasin (30%), colistin (78%), and nalidixic acid (5%), respectively, but resistant to 9 kinds of antibiotics such as sulpenicillin, cefazolin, cephalothin, cefametazol, cefoperazone, kitasamycin, oleandomycin, lincomycin and bacitracin. 5. Pathological features of 60 cases of swine lungs indicated that pneumonic lesions were observed in 38 cases (63.3%) examined by macroscopic finding, in which lesions of 8 cases(13.4%) would correspond to those of mycoplasmal infection, and 30 cases (50%) were similar to viral infection by histopathological finding, whereas 22 cases (36.7% ) were considered to be normal by necropsy or histopathologlcal finding.

북한의 재산개념과 개인소유를 침해한 죄

이학철 연세법학회(구 연세법학연구회) 2022 연세법학 Vol.40 No.-

Recognizing that the starting point for preparing for unification is understanding of divided South and North Korea, this paper selected crimes that violated personal ownership among North Korean criminal laws for the purpose of understanding the reality and perception of North Korean society and North Koreans. In order to understand the crime of infringing personal ownership under the North Korean criminal law, the concept of personal property according to the characteristics of the North Korean economic system was first examined, and the problems of the concept itself and the limitations of the protection function of the North Korean criminal law. Through the process of individually reviewing crimes that violate personal ownership of North Korean criminal law, it was confirmed that the interpretation of such weighting factors was delegated to the party's policy judgment while conceptually distinguishing and punishing secretly stolen or publicly stolen acts. In addition, compared to property crimes under the Korean Criminal Code, the crime of violating personal ownership differs in that the object of the crime is concentrated on property and the sentencing factors of the Korean Criminal Code are defined as elements of crime, but they have something in common in that they understand property as a material basis for human life. Based on the above research, this paper proposes policy implications for education for North Korean defectors. First, when educating North Korean defectors about Korean law, especially criminal law, it is necessary to start from a common point rather than a difference between the two Koreas. In this case, it could help North Korean defectors not to form a wrong perception of Korean society. Next, it is necessary to strengthen education on the concept of property arising from the fundamental differences in the economic systems of the two Koreas. This could contribute to making North Korean defectors aware that they have extensive legal protection for their property as members of Korean society, so that they can become familiar with the resolution of disputes through law. 본고는 통일을 대비하는 출발점이 분단된 남북 서로에 대한 이해라는 인식하에, 북한 사회와 북한 주민들의 현실과 인식을 이해하기 위한 목적에서 북한 형법 중 ‘개인소유를 침해한 범죄’를 연구 대상으로 선정하였다. 북한 형법상 개인소유를 침해한 죄를 이해하기 위하여 우선 북한 경제체제의 특성에 따른 개인소유재산의 개념을 살펴보았고, 개념 자체의 문제와 그에 따른 북한 형법의 개인소유재산에 대한 보호기능의 한계를 함께 확인하였다. 북한 형법의 개인소유를 침해한 죄를 개별적으로 검토한 결과, 은밀하게 이루어지는 훔친행위나 공개적으로 이루어지는 빼앗은 행위를 개념적으로 구별하여 처벌하고 추상적 개념을 사용하여 법정형을 가중하면서 그러한 가중요소에 대한 해석을 당의 정책적 판단에 위임하는 등의 특성을 확인하였다. 또한 북한 형법의 개인소유를 침해한 죄는 한국 형법의 재산범죄와 비교하여 범죄의 객체가 다소 재물에 편중되어 있고, 한국 형법의 양형요소에 해당하는 사항들이 범죄성립의 요소로 규정되어 있는 등의 차이가 있으나, 재산을 인간 생활의 물질적 기초로 이해하여 이를 보호하고자 한다는 점에서는 공통점이 있음을 확인하였다. 이상의 연구를 바탕으로 본고에서는 북한이탈주민들에 대한 교육에 관한 정책적 시사점을 제안한다. 첫째로 북한이탈주민들에게 한국 법 특히 형법을 교육할 때는 남북간의 차이점보다는 공통점에서 출발할 필요가 있다. 이로써 북한이탈주민들이 한국 사회에 대하여 잘못된 인식을 형성하지 않는 데 도움을 줄 수 있을 것이다. 다음으로 남북한의 경제체제의 근본적인 차이에서 발생하는 재산개념에 대한 교육을 강화할 필요가 있다. 이는 북한이탈주민들로 하여금 한국 사회의 구성원으로서 자신의 재산에 대하여 폭넓은 법률적 보호를 받고 있음을 인식하도록 하여 법을 통한 분쟁의 해결에 익숙해질 수 있도록 하는 데 이바지할 수 있을 것이다.