수도포장에서의 동력경운기의 주행성에 관한 연구

이규승,이용국,이중용,박승제,김상헌 ( Kyou Seung Lee,Yong Kook Lee,Choong Yong Lee,Seung Je Park,Sang Hun Kim ) 한국농업기계학회 1984 바이오시스템공학 Vol.9 No.2

농작업 기계 분야 : 트랙터 부착용 로더의 기구학적 시뮬레이션 프로그램 개발

이규승,김준호,노광모,박원엽 ( K . S . Lee,J . H . Kim,K . M . Noh,W . Y . Park ) 한국농업기계학회 1996 한국농업기계학회 학술발표논문집 Vol.2 No.-

답작의 (沓作) 효율적 경운정지 방법에 관한 연구

이규승,고학균 ( Kyou Seung Lee,Hak Kyun Koh ) 한국농업기계학회 1979 바이오시스템공학 Vol.4 No.1

水資源과 에너지는 食糧生産에 直接 間接으로 큰影響을 미치고 있으며 또한 1973年 에너지 危機 以後 農業에 使用된 에너지가 效率的으로 使用되었는가에 對한 硏究는 農工學者들의 큰 關心이 되어왔다. 本 硏究는 필리핀의 沓作農業에 있어서 耕耘整地時 灌漑에 따른 土壤硬度의 變化와, 土壤硬度와 燃料消耗率과의 關係를 究明하고, 에너지와 灌漑水의 效率的인 利用을 硏究하고저 乾期와 雨期에 각각 遂行되었으며 그의 結果를 要約하면 다음과 같다. N/A

Testosterone Propionate의 투여(投與)가 어린 숫흰쥐의 부신(副腎)에 미치는 영향(影響)

이규승,Lee, Kyu-Seung 충남대학교 농업과학연구소 1976 Korean Journal of Agricultural Science Vol.3 No.2

정소의 기능(機能)이 부신(副腎)에 미치는 영향(影響)을 구명(究明)코져 말성숙(末成熟) 숫흰쥐에 매(每) 10일간격(日間隔)으로 20 mg씩의 testosterone propionate를 투여(投與)한 후(後) 부신(副腎)의 중량(重量) 및 조직학적(組織學的) 변화(變化)를 50일간(日間) 조사하여 정상대조군(正常對照群)과 비교(比較) 검토(檢討)한바 다음과 같은 결론(結論)을 얻었다. 부신(副腎)의 중량(重量)은 처리기간(處理期間)이 경과(經過)할수록 증가(增加)되는 결과(結果)였는데 30일후(日後)부터 유의성(有意性)이 인정(認定)되었다. 부신(副腎)에서 각층(各層)이 차지하는 비율(比率)의 변화(變化)에 있어서, 색상대(索狀帶)는 20일후(日後), 망상대(網狀帶)는 30일후(日後)부터 유의(有意)하게 증가(增加)하였으며, 부신수질(副腎髓質)은 감소(減少)하는 경향(傾向)이었는데 20일후(日後)부터 유의성(有意性) 인정(認定)되었다. 부신(副腎)의 조직학적변화(組織學的變化)는 색상폐(索狀幣)와 망상대(網狀帶)에서는 20일후(日後)부터 세포(細胞)가 비대(肥大)하여지고 공포변성(空胞變性)이 인지(認知)되었으나 피질(皮質)의 구상대(球狀帶)와 부신수질(副腎髓質)에서는 특기(特記)할 만한 변화(變化)가 인지(認知)되지 않았다. In order to find the effects of testis function on adrenal gland, immature male rats were administered by 20 mg of testosterone propionate with 10 days interval for 50 days, and their adrenal weights and histological changes were compared with those of normal ones, and the results obtained were as follow: Adrenal weight was increased with the period of treatments, and especially the significant difference was recognized after 30 days. Of the zones in adrenal gland, the portion of zona fasciculata and reticularis increased significantly after 20 days and 30 days, respectively, while that of adrenal medulla was decreased significantly after 20 days. In histological changes, hypertrophy and vacuolization were observed in zona fasciculata and reticularis after 20 days, but no changes were recognized in zona glomerulosa and adrenal medulla.

Hexestrol의 투여(投與)가 하수체척출(下垂體剔出) 암흰쥐의 혈청성분(血淸成分)에 미치는 영향(影響)

이규승,권해병,Lee, Kyu Seung,Kwon, Hae Byung 충남대학교 농업과학연구소 1978 Korean Journal of Agricultural Science Vol.5 No.2

난소(卵巢)의 분필기능(分泌機能)이 하수체(下垂體)의 조절기능(調節機能)없이 혈청성분(血淸成分)에 직접적(直接的)인 영향(影響)을 미치는가를 구명(究明)하기 위하여 암흰쥐에서 하수체(下垂體)를 척출(剔出)하고 마리당 6.0mg씩의 hexestrol을 투여(投與)한 후 혈청(血淸)중의 총지방(總脂肪), Cholesterol, 총단백질(總蛋白質), Non-protein nitrogen, Na, Cl 및 K의 변화를 처리(處理) 8주후(週後)까지 조사(調査)하여 비교검토(比較檢討)한 바 다음과 같은 결론(結論)을 얻었다. 1. 총지방(總脂肪)과 cholesterol의 양(量)은 대조군(對照群)에 비하면 2주후(週後)부터 유의성(有意性)이 인정(認定)되는 증가(增加)를 하였는데, 하수체척출군(下垂體剔出群)과 하수체척출후(下垂體剔出後) hexestrol 투여군간(投與群間)에는 유의성(有意性)이 인정9認定)되지 않았다. 2. 총단백질(總蛋白質)과 Non-protein nitrogen의 함량변화(變化)는 동일(同一)한 경향(傾向)으로서 시간(時間)이 경과(經過)함에 따라 점증(漸增)하였는데, 대조군(對照群)에 대하여 처리(處理) 4주후(週後)부터 유의성(有意性)이 인정(認定)되었고, 하수체척출군(下垂體剔出群)과 하수체척출후(下垂體剔出後) hexestrol 투여군간(投與群間)에는 유의성(有意性)은 인정(認定)되지 않았으나 하수체척출군(下垂體剔出群)에서 높은 값을 나타냈다. 3. Na, Cl 및 K의 함량(含量)은 일정(一定)한 변화경향(變化傾向)없이 근소하게 증감(增減)하여 전(全) 실험기간(實驗期間)에 걸쳐서 비교군간(比較群間)에 유의성(有意性)을 인정(認定)할 수 없었다. 4. 하수체척출(下垂體剔出) 암흰쥐에 있어서 hexestrol의 투여(投與)는 단백질대사(蛋白質代謝)에는 약간의 영향(影響)을 미치나, 지질(脂質) 및 무기물(無機物)의 대사(代謝)에는 영향(影響)을 미치지 못한다고 생각된다. This study was made to investigate whether there would be any direct relationship between ovary and serum components without the control mechanism from the hypophysis. After the administration of hexestrol (6.0mg/head) to the hypophysectomized female rats, the serum components such as total lipid, cholesterol, total protein, non-protein nitrogen, Na, Cl, and K were measured for 8 weeks after treatments. The results were obtained as follows; 1. The contents of total lipid and cholesterol for the treatment groups were increased significantly as compared with the control group at the 2nd week and there on. However, there were no ditferences between the hypophysectomized and the hexestrol treated-hypophysectomized groups. 2. The contents of total protein and non-protein nitrogen for the hypophysectomized and the hexestrol treated-hypophysectomized groups were gradually increased as the time passed in comparison with the control group. The differences between the control group and the treatment groups were significant at the 4th week and there on, and the differences between the hypophysectomized and the hexestrol treated-hypophysectomized groups were insignificant, but the hypophysectomized group had slightly high value. 3. For the contents of Na, Cl, and K, there was not any unique change but only a slight flactuation in its level, and the differences were thus statistically insignificant in all cases. 4. In the hypophysectomized famale rats, administration of hexestrol had a litlle effect on the metabolism of protein, but on the other hand, no effect of those of lipid and minerals.

과학영농의 토착화를 위한 전시포장 운영효과

이규승,이원근,Lee, Gyu-Seung,Lee, Won-Geun 한국과학기술단체총연합회 1980 과학과 기술 Vol.13 No.9

구동륜(驅動輪)의 성능예측(性能豫測)에 적합한 토양변수(土壤變數)의 차원해석(次元解析)을 위한 차륜(車輪)-토양(土壤) 시스템의 상사성(相似性) 연구(硏究)(I) -견인력(牽引力) 예측(豫測) 분석(分析)-

이규승,정창주,Lee, K.S.,Chung, C.J. 한국농업기계학회 1989 바이오시스템공학 Vol.14 No.2

This study was conducted to investigate the applicability of true model theory for pull prediction in a powered lugged wheel-soil system and to examine the possibility of using principles of similitude in investigating the dimensions of soil parameters pertinent to a powered lugged wheel-soil system concerning the pull prediction. The following conclusions were derived from the study; 1) The pull of prototype wheels proved to be predicted by those of the model wheels for the range of the dynamic weight tested. The pull curves of models and prototype were respectively very similar in the shape. From this basic knowledge, it was enabled to apply the similitude theory to the performance prediction of the true model. 2) A conditional equation which can be used for the prediction of pull of prototype by model test was derived as follows. $n_f=n_1^{-b}$ where $n_f$ : force scale = $w/w_m$ $n_1$ : length scale = ${\ell}/{\ell}_m$ b : exponent on the length dimension of the soil property ${\alpha}$ The range of the numerical value of b, which was determined by the least square method, was found to be -2.0~-2.6. 3) Considering a relatively wide variation of b values in the pull prediction, b is considered to be a function of many variales. Thus it was concluded that there are several soil properties which are pertinent to the powered lugged-wheel-soil system concerning the pull prediction, and these soil properties may have the different effects on the pull of model and protytype wheels, to give the different dimension on the soil parameters.

한국농업기계학회 산학협동연구 논문 ( 농작업 기계 분야 ) : 모델 기구에 의한 경운작업기의 견인저항 예측

이규승,조성찬,박원엽,권병기 ( K . S . Lee,S . C . Cho,W . Y . Park,B . G . Kwon ) 한국농업기계학회 1996 한국농업기계학회 학술발표논문집 Vol.2 No.-

Testosterone의 투여(投與)가 흰쥐의 조정기능(造精機能)에 미치는 영향(影響)

이규승,Lee, Kyu Seung 충남대학교 농업과학연구소 1975 Korean Journal of Agricultural Science Vol.2 No.2

Testosterone이 조정기능(造精機能)에 미치는 영향(影響)을 구명(究明)코져 숫흰쥐에 매(每) 10일(日) 간격(間隔)으로 20mg씩의 Testosterone Propionate를 투여(投與)한 후(後) 정소(精巢)의 중량(重量) 및 조직학적(組織學的) 변화(變化)를 50일간(日間) 조사(調査)하여 정상대조군(正常對照群)과 비교검토(比較檢討)한바 다음과 같은 결론(結論)을 얻었다. 1. 정소(精巢)의 중량(重量)은 처리기간(處理期間)이 경과(經過)할수록 감소(減少)되는 결과(結果)를 보였는데 20일후(日後)부터 유의성(有意性)이 조정(詔定)되었다. 2. 곡세정관(曲細精管)의 직경(直徑)은 처리(處理) 40일(日)과 50일후(日後)에 고도(高度)의 유의성(有意性)이 인정(認定)되는 감소(減少)를 하였다. 3. 조정기능(造精機能)이 파괴된 곡세정관(曲細精管)의 비율(比率)은 처리(處理) 20일(日) 후(後)부터 유의성(有意性)이 인정(認定)되는 증가(增加)를 하여 50일(日) 후(後)에 65.8%(대조군(對照群):20.0%)로 최고치(最高値)를 보였다. 4. 정소조직(精巢組織) 구성성분(構成成分)의 비율변화(比率變化)에 있어서 정자(精子)는 20일후(日後) 정낭세포(精娘細胞) 30일후(日後)부터 유의성(有意性)이 인정(認定)되는 감소(減少)를 하였으며 기타성분(其他成分)은 실제적(實除的)인 차이(差異)는 없었다. 5. Testosterone의 과량투여(過量投與)는 조정기능(造精機能)을 파괴(破壞)하는데 정자(精子)와 정낭세포(精娘細胞)가 가장 심(甚)한 손상(損傷)을 받으며 다른 부위(部位)는 큰손상(損傷)을 받지는 않았다. The objective of this study was to examine the effect of testosterone on the spermatogenesis. Testosterone propionate was administered in 20 mg dose to male rat with 10 days interval for 50 days and the treated rat was compared with normal one in their testis weight and histological changes. The results were as follows: 1. The longer treatment gave the more decreased testis weight. Treated rat for more than 20 days was significantly different from the untreated one. 2. Diameter of seminiferous tubule was significantly reduced in 40 and 50 days treatments. 3. The ratio of disrupted spermatogenesis on seminiferous tubles was significantly increased from 20 days treatment. 4. On volumetric proportion of testicular structure, spermatozoa and spermatid were significantly reduced from 20 and 30 days treatments respectively. Other components in testis were not changed. 5. The administration of testosterone in over dose damages spermatozoa and spermatid more than other components in testis.

하수체척출 암흰쥐에 있어서 Hexestrol 의 투여가 부신에 미치는 영향

이규승,정영채,김관영 ( K . S . Lee,Yung Chai Chung,K . Y . Kim ) 한국축산학회 1975 한국축산학회지 Vol.17 No.4

To ascertain whether ovary affects directly on the function of adrenal gland without the cooperation of hypophysis, rats were hypophysectomized and weight of adrenal gland, thickness of various zona of adrenal gland and histopathological changes were compared with those of control group during the period from 1 to 56 days. The results were summarized as follows; 1. No significant difference of adrenal gland weight was observed between hypophysectomized group and hypophysectomized and hexestrol administered group, but the adrenal gland weight of both experimental groups reduced consistently after hypophysectomy and high significant difference (P$lt;0.01) was observed compared with normal group from 7th day. 2. No significant alternation of the proportional size of adrenal zona was observed between hypophysectomized group and hypophysectomized and hexestrol administered group, but the marked atrophy of zona fasciculata and reticularis of both groups were found, and it showed significant difference (P$lt;0.05) from 7th day and high significant difference (P$lt;0.01) from 14th day whereas no difference of zona glomerulesa was observed between compared groups. 3. There was no difference of histopathological changes of gonad between hypophysectomized group and hypophysectomized and hexestrol administered group, but no atrophy of zona fasciculata and reticularis was found in experimental groups whereas zona glomerulesa and adrenal medulla was not altered compared with these of control group. These results indicate that ovary does not affect directly on the development of adrenal gland, but cooperate with the hypophysis.