耕耘實驗을 爲한 人工土壤의 物理的 特性에 關한 硏究

金基大,許潤根,金滿秀,金聲來 충남대학교 농업과학연구소 1978 農業技術硏究報告 Vol.5 No.2

For improvement and new design of tillage equipments, indoor test is very useful and more desirable than outdoor because the experiment of ourdoor is very difficult and its cost is expensive. This study was carried out to determine the physical properties of artificial soil suitable for the indoor test with the soil bin manufactured at the workshop of the Dept. of Agricultural Machinery Engineering. The artificial soil being studied was made with very similarity to the natural soil of the experimental plots of Chungnam National University, and it consist of 39.35 percent, by weight of bentonite and 48.10 percent of sand with 12.55 percent of SAE 10W oil. The results are summarized as follows: 1. Bulk density increased with increasing number of rolling, and its relationship could be expressed. y=1.073200+0.07080x-0.002263x^2 where, y=bulk density(g/㎤), x=number of rolling. These results could be explained that the effect of rolling velocity on the bulk density was not singnificant in the range of 4.5∼10.4 cm/sec. 2. The absolute soil hardness depended directly upon number of rolling, and their relationship could be expressed by the equation. y=37.74(0.64+0.17x-0.0054x^2)/(3.36-0.17x-0.0054x^2)^3. where, y=absolute soil hardness(kg/㎤), x=number of rolling. 3. Relationship between the bulk density and absolute soil hardness could be expressed by the equation; y=37.74(2.46 x-2.02)/(6.02-2.46x)^3. where, y=absolute soil hardness, x=bulk density. 4. The cohesion and the angle of internal friction of artificial soil were increased with increasing its bulk density. According to the cohesion and angle of internal friction, at the range of 1.60∼1.75(g/㎤) of bulk density, this artificial soil was similar with sandy loam of 29.5% moisture content of natural soil. 5. Sliding-fricfion coefficient of steel plate on the artificial soil was 0.3∼0.4 and rubber plate on it is 0.64∼0.72. Those values were very similar with those of natural soil being studies by many others.

김치의 발효 숙성에 관여하는 미생물의 소장에 관한 연구

노완섭,허윤행,오현근 서울保健大學 1981 論文集 Vol.1 No.1

김치의 발효 숙성과 저장 중에 있어서의 pH 및 이에 관여하는 미생물의 경시적인 변화에 관하여 연구 검토한 결과는 다음과 같다. 1) pH의 변화는 초기에는 급격히 떨어지나 중기 이후에는 완만한 감소를 나타내고 그 후 말기에 이르기까지는 거의 일정한 값을 유지하였으며, 4℃ 보다 25℃의 경우에 있어서 초기에 pH가 급격하게 떨어지며 말기의 pH 도 낮은 값을 나타내었다. 2) 생균수는 초기에는 완만한 증가를 보이다가 중기에 이르러 급격히 증가하고 말기에는 감소하는 경향이며 4℃에 비하여 25℃의 경우 생균수가 적은 경향을 나타내었다. 3) 세균수는 저장온도에 따라 약간의 차이는 있으나 혐기성 세균은 급격한 증가를 거쳐 감소되는 데 반하여 호기성 세균은 초기에는 증가하다가 중기에 이르러서는 급격히 감소되고 그 후 다시 급증하는 경향이었다. 4) 효모의 수는 숙성의 진행에 따라 서서히 증가하는 경향이며 저장온도에 따른 두드러진 차이는 볼 수 없었다. This paper was intended to study on the changes caused by microorganisms in Kimchi fermentation. This research is based on the observation for the fermentation of Kimchi, made of Korean cabbage. especially prepared for winter dietary purpose. Temperatures and pH changes during the preservation and the process of maturation were observed. The numbers of microorganism, bacteria and yeasts were counted during the Kimchi fermentation. The results are summarized as follows; 1) At the begenning stage, the changes of pH rapidly occurred and at the intermediate stage, they slowly decreased and at the final stage, they reached the constant value. When observed and compared at 4℃ and 25℃, pH value decreased suddenly and the low pH value continued. 2) At the beginning stage the steady increase in the number of microorganism was observed and at the intermediate stage the increase was relatively noticeable and at the final stage the decrease in number was observed at different temperatures. The number of microoganisms exhibited the tendency of the decreasing manner. 3) Anaerobic microorganisms was found to increase in numbers followed by steady decrease in accordance with temperature change. Aerobic microorganisms showed the rapid increase at the begenning stage and the rapid decrease in the intermediate process and the rapid increase again at the final stage. 4) On the process of maturation, the number of yeasts increased steadily regardless of the changes in temperature for preservation.

벼줄기의 機械的 特性에 關한 研究

許潤根(Yun Kun Hur),李相祐(Sang Woo Lee) 충남대학교 농업과학연구소 1982 農業技術硏究報告 Vol.9 No.2

胃結核症의 一例

許琢,金都園,李鍾澤,尹健鎬 中央醫學社 1964 中央醫學 Vol.6 No.6

Though intestinal tuberculosis, as complication of pulmonary tuberculosis, is the most frequent one, gastric tuberculosis is very rare and occupy no more than O. 4-2. 1%d in incidences. In particular, cases in which tuberculosis affects the stomach alone without progressive tuberculous lession in the lung are extremely rare and, moreover, coexistence of cancer and tuberculosis in the stomach at the same time is found in only 10% of all gastric tuberculosis. And as for age, intestinal tuberculosis is rare in the aged. Recently, I found a 64-year-old female in whom gastric tuberculosis was found to be coexistent with cancer in the biopsy specimen obtained during gastrectomy under the diagnosis of gastric cancer and so I report this case with some literature study.

臍帶 Hernia의 一治驗例

許琢,金都園,尹健鎬,李叔熙 中央醫學社 1964 中央醫學 Vol.6 No.5

Omphalocele or fetal umbilical hernia is due to the failure of the abdominal wall development during the early fetal life and usually one or some of the organs are eviscerated out of the abdominal cavity through the umbilical cord. Therefore omphalocele should be differentiated . from the other two types of the umbilical hernia which are infantile and adult umbilical hernia. Omphalocele is a relatively rare congenital anomaly reported to occur about once in every 5000 to 10, 000 births. Incidence of the other two types is reported 1 out of every 50 births. Generally severe forms of the omphalocele demands immediate surgical intervention, but the prognosis is reported not much expectable. Here a case of omphalocele of 8 hrs. old infant which had been successfully managed by the repair of the abdominal defect in one stage procedure by us was presented.

牧草의 剪斷 特性에 關한 硏究

許潤根,李相祐,明炳洙 충남대학교 농업과학연구소 1983 農業技術硏究報告 Vol.10 No.1

Importance has been increased on farming mechanization in harvesting, handling and processing of forage in Korea. Small grasslands are most spread and popular in Korea in comparison with those of Europe and America. Therefore shearing characteristics of some major forage crops should be studied to be contributed to the basic data to develop a moderate size forage harvester being suitable to the small grassland. They were studied on six kinds of forage crops - reed canarygrass, alfalfa, red clover, orchardgrass, meadow fescue and birdsfoot trefoil - in regarding with moisture content levels and shearing angles. The results were as follows; 1. The increase rate of the linear density in relation to the diameter was greater in red clover than other kinds, and order of increase rate in greatness was reed canarygrass, alfalfa and meadow fescue. 2. The increase rates of the maximum shear forces were high in relation to their cross-sectional area in alfalfa and birdsfoot trefoil with hard stems, and the shear energy were comparatively large in orchardgrass and meadow fescue with soft stems, also reed canarygrass and red clover had high values in both the maximum shear force and the shear energy. 3. The shear energy per unit area or shear strength in relation to moisture content showed concave curves with the minimum values at about 70%w. b. which was in the beginning stage of drying in meadow fescue and orchardgrass, nevertheless reed canarygrass and red clover had convex curves with maximum values at about 40% w.b. 4. The shear force in relation to the shear angle decreased generally with decrease of shear angle from 90° to 70° or 50°.

대장암에서 림프절 침범과 암의 침윤도가 예후에 미치는 영향

최윤미 ( Yun Mee Choi ),김해성 ( Hae Sung Kim ),최선근 ( Sun Keun Choi ),허윤석 ( Yun Seok Hur ),이건영 ( Kun Yong Lee ),김세중 ( Sei Joong Kim ),안승익 ( Seung Ick Ahn ),홍기천 ( Kee Cheun Hong ),신석환 ( Seok Hwan Shin ),우제홍 대한소화기학회 2002 대한소화기학회지 Vol.40 No.6

Background/Aims: This study was carried out to evaluate prognostic significance of the clinicopathological features in colorectal cancer. Methods: The records of 413 patients who underwent a curative resection of colorectal cancer from June of 1996 to December of 2000 were examined focusing on the clinicopathological factors and difference of survival rates. Results: The numbers of lymph node metastasis were significantly related to age, depth of invasion, histologic differentiation, tumor size, lymphovascular invasion, perineural invasion, and preoperative serum CEA level. In the univariate analysis for 366 patients, the depth of invasion (p=0.0017), histologic differentiation (p=0.0069), lymph node metastasis (p=0.0000), lymphovascular invasion (p=0.0001), perineural invasion (p=0.0008), and preoperative serum CEA level (p=0.0005) turned out to be significant prognostic factors. The histologic differentiation between the primary lesion and the metastatic lymph node was the same in 90.7% of the studied cases. Capsular invasion was found in 92 cases (53.5%), but there was no significant difference in survival rates between the capsular invasion group and non-capsular invasion group (p=0.0510). Conclusions: In this study, the depth of invasion, lymph node metastasis, and the number of lymph node metastasis could be recognized as important prognostic factors for colorectal cancer. However, further follow-up studies are needed to determine the role of the various clinical and pathological factors in colorectal cancer prognosis. (Korean J Gastroenterol 2002;40:371-378)

出血性 胃炎의 外科的 處置

尹健鎬(Kun Ho Yun),蘇元永(Won Young Sou),趙世煥(Sae Whan Cho),朴震相(Jin Sang Park),金東鎭(Dong Jin Kim),許鎭哲(Jin Cheul Hur) 대한외과학회 1971 Annals of Surgical Treatment and Research(ASRT) Vol.13 No.9

Mat 묘의 육묘조건이 이앙기의 (移秧機) 소요전단력에 미치는 영향

허윤근,김성래 ( Yun Kun Hur,Soung Rai Kim ) 한국농업기계학회 1979 바이오시스템공학 Vol.4 No.1

벼줄기의 기계적(機械的) 특성(特性)에 관(關)한 연구(硏究)

허윤근,이상우,Hur, Yun Kun,Lee, Sang Woo 충남대학교 농업과학연구소 1982 Korean Journal of Agricultural Science Vol.9 No.2

수확기간(收穫期間)에 있어서 벼줄기의 물리적(物理的) 및 기계적(機械的) 특성(特性)을 구명(究明)하고져 일반계(一般系) 품종(品種)인 이리(裡里)348 및 진주(晋州)벼와 통일계(統一系) 품종(品種)인 서광벼 및 태백(太白)벼 4개(個) 품종(品種)을 표준시비구(標準施肥區)에서 선정(選定)하여 압축(壓縮), 인장(引張), 굽힘 시험(試驗)을 실시(實施)하고, 이어서 진주(晋州)벼 및 태백(太白)벼에 대(對)하여 부위별(部位別), 전단각도(剪斷角度) 및 함수율(含水率) 변화(變化)에 따른 전단하중(剪斷荷重)-변형특성(變形特性), 전단력(剪斷力) 및 전단(剪斷) energy등(等) 전단특성(剪斷特性)을 측정(測定) 분석(分析)한 결과(結果)는 다음과 같다. 1. 압축(壓縮), 굽힘, 인장(引張) 및 전단력(剪斷力)은 통일계품종(統一系品種)에 비(比)하여 일반계(一般系) 품종(品種)이 컸다. 2. 전(全) 부위별(部位別)의 전단력(剪斷力) 추세는 진주(晋州)벼에 있어서 하부위(下部位)의 큰 값이 상부위(上部位)로 갈수록 감소(減少)하였고, 태백(太白)벼에 있어서는 하부위(下部位)부터 지상(地上) 21cm까지 비교적 일정(一定)한 큰 값으로 나타냈다. 3. 전단면적(剪斷面積)의 증가(增加)에 따라 전단력(剪斷力) 및 전단(剪斷) energy는 증가(增加)하였고, 그 증가율(增加率)은 전단면적(剪斷面積) $10mm^2$까지는 컸으나 그 이상(以上)에서는 매우 둔화(鈍化)되었다. 4. 예취(刈取) 직후(直後)에 있어서 함수율(含水率)의 감소(減少)에 따른 전단력(剪斷力) 및 전단(剪斷)energy의 감소(減少)는 컸으나 함수율(含水率) 60%(w.b)부터는 큰 변화(變化)가 없었다. Mechanical properties of rice plants were tested to determine compressive force, bending force, tensile force and shear force for improvement of harvesting machines and for efficient utilization of rice culm during the proper harvesting period. Rice varieties used in this study were two Japonica varieties with Irri 348 and Jinju, and two $Indica{\times}Japonica$ hybrids with Seogwang and Taebaeg, which were grown in the standard fertilization field of Chungnam Rural Development Office. Also Jinju and Taebaeg were tested to elucidate the shearing characteristics which included shear force-strain relationship, shear force and shear energy according to the position from the ground level, the shearing angle to the rice culm, and the moisture content. 1. Compressive force, bending force, tensile force and shear force were higher In Japonica varieties than $Indica{\times}Japonica$ hybrids. 2. Shear force to overall culm length decreased progressively to upper positions in Jinju variety but a constant shear force was approximately showed between the ground level and the position of 21cm in Taebaeg variety. 3. Shear force and shear energy increased with increase of the cross sectional area, and the rates of increase were high in general up to the cross sectional area of $10mm^2$ and then they became dull very much. 4. Shear force and shear energy decreased with decrease of moisture content of rice culm after cutting up to the moisture content of 60% (w. b.) and then they did not change significantly.