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김종우,윤영묵,김동석,김상원 ( Jong Woo Kim,Young Mook Yoon,Dong Seok Kim,Sang Won Kim ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.2
We report a case of cutaneous B cell lymphoma in a 68-year-old male who had primarily developed two 2.0 * 2.0 * 0,6cm sized, dome shaped, dark red colored tumors on the medial side of his left thigh about 4 months previously. His general condition was good and laboratory results were within normal limits, except for the enlargement of aortocaval, paraaortic and left inguinal lymph nodes. Histopathological examinations revealed diffuse dense infiltration of large atypical cells with vesicular nuclei and large prominent nucleoli in the entire dermis. They were largely composed of centroblast and immunoblast-like cells and showed positive reactions to the leukocyte common antigen, and L26 and CD22 was related to peripheral B-cell lineage in the immunohistochemical study. The skin lesions improved completely with an m-BACOD regimen. There was no relapse over a 3-year follow-up period. (Kor J Dermatol 1997;35(2): 312-316)
김종우,윤영묵,김태형,김동석,김상원 ( Jong Woo Kim,Young Mook Yoon,Tae Hyung Kim,Dong Seok Kim,Sang Won Kim ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.3
We have encountered a rare case of erythema nodosum-like leukemia cutis associated with acute myelocytic leukemia(AML) in a 57-year-old male. He was in good health until about 2 weeks prior to admission, when the systemic symptoms of high fever, anorexia, general weakness and malaise, and subcutaneous nodules developed. The nodules were multiple, red and noted bilaterally on the pretibial areas. Histological findings of his skin lesions showed diffuse cellular infiltrates intermingled with leukemic cells predominantly involving the adipose tissues. The cells displayed negative stainirig to antibodies CD3 and CD20, but positive staining to LCA. The diagnosis of AML(M4) was made by blood and bone marrow studies. He had a rapid downhill course and was discharged after 2 weeks of admission, with no anti-cancer chemotherapy. (Kor J Dermatol 1997;35(3): 556 - 560)
김종우,박찬,김주환,허석,김동규,이동길,조영도,박삼규,Kim, Jong-Woo,Park, Chan,Kim, Ju-Hwan,Heo, Seok,Kim, Dong-Kyu,Lee, Dong-Kil,Jo, Young-Do,Park, Sam-Gyu 한국암반공학회 2015 터널과지하공간 Vol.25 No.3
본 연구에서는 최근 재개발되고 있는 정선지역의 철광산에서 현장 초기지압 시험과 수많은 암석 실내시험을 실시하였다. 본 광산의 측압계수는 심도가 깊어질수록 작아지는 경향을 보였으며 평균값은 1.10으로 나타났다. 본 광산에 주로 분포하는 네 가지 암종인 백운암, 규장암, 화강암, 철광석에 대한 실내시험을 통해 암석의 단위중량, 공극률, 흡수율, 탄성파속도, 일축압축강도, 영률, 포와송비, 인장강도, 쇼어경도, 내부마찰각, 점착력 등의 각종 역학적 특성을 조사하였다. 실내시험 결과의 통계분석을 통해 암종별 물성을 비교하였고 물성 상호간의 관련성을 검토하였는데, 철광석보다는 규장암이나 화강암의 강도특성이 더 컸으며 암석 물성 간의 일반적인 상관관계와는 반대되는 현상도 발견되었다. 또한 Mohr-Coulomb 파괴조건과 Hoek-Brown 파괴조건을 적용하여 네 가지 암석의 파괴조건을 해석하였다. In this study, both in-situ stress measurements and a lot of laboratory rock tests were conducted at a metal mine in Jeongseon, Korea. The stress ratio obtained from in-situ stress measurements showed a tendency to decrease according to depth below surface and its average value was 1.10. The mechanical properties such as unit weight, absorption ratio, porosity, elastic wave velocity, uniaxial compressive strength, Young's modulus, Poisson's ratio, tensile strength, shore hardness, friction angle and cohesion were investigated for the four different rocks mainly distributed at a studied mine, which were dolomite, felsite, granite and magnetite. The mechanical properties of the four different rocks were compared by means of statistical analyses, whereupon the felsite and the granite turned out to have more strength characteristics than the magnetite. The correlation of mechanical properties was also investigated, whereupon a few results against the general correlation were found out. The failure criteria of the four different rocks were finally discussed by means of both Mohr-Coulomb criterion and Hoek-Brown criterion.
두과수엽(荳科樹葉)의 사료가치(飼料價値)에 관한 연구(硏究)
김종우,Kim, Jong Woo 충남대학교 농업과학연구소 1975 Korean Journal of Agricultural Science Vol.2 No.2
두과수엽(荳科樹葉)의 사료적(飼料的) 이용성(利用性)을 검토(檢討)하기 위하여 싸리(Lespedeza spp.), 쪽제비싸리(Amorpha fruticosa) 및 아카시아 (Robinia pseudo acacia)를 대전시(大田市) 및 대덕군(大德郡) 각(各) 지역(地域)에서 생육시기별(生育時期別)로 수집(蒐集)하고 수엽(樹葉)의 생산성(生産性), 생육시기별(生育時期別) 성분함량(成分含量)의 변화(變化), 기호성등(嗜好性等)을 시험(試驗) 고찰(考察)한 바 그 결과(結果)를 요약(要約)하면 다음과 같다. 1. 수엽(樹葉)의 생산성(生産性)은 싸리에 비하여 쪽제비싸리 및 아카시아가 높았으며 쪽제비싸리는 8월에, 아카시아는 9월에 보다 높은 수량(收量)을 나타내었다. 2. 조단백질(粗蛋白質) 함량(含量)은 싸리가 12.60%, 쪽제비싸리가 18.63%, 아카시아는 15.87%를 함유(含有)하여 쪽제비싸리가 가장 높았으며 생육시기(生育時期)가 진행(進行)됨에 따라 함유량(含有量)은 점차 감소(減少)되었다. 3. 조지방(粗脂肪) 함량(含量)은 싸리가 9.00%, 쪽제비싸리가 5.85%, 아카시아가 4.70%를 나타내고 생육기간(生育期間)이 진행됨에 따라 점차 증가(增加)되었다. 4. 조직유(組織維) 함량(含量)은 싸리가 14.79%, 쪽제비싸리가 12.61%, 아카시아는 9.80%를 나타내어 아카시아가 가장 적었으며 생육시기(生育時期)가 진행됨에 따라 점차 증가 되었다. 5. 가용무질소물(可溶無窒素物) 함량(含量)은 아카시아가 53.01%로서 가장 높았으며 생육이 진행됨에 따라 점차 감소되었다. 6. 조회분(粗灰分) 함량(含量)은 싸리가 4.40%, 쪽제비싸리가 4.98%, 아카시아가 5.27%로서 아카시아가 가장 높았으며 생육시기(生育時期)에 따른 함량변동(含量變動)은 일정하지 않았다. 7. 두과수엽(荳科樹葉)의 기호성(嗜好性)은 싸리, 아카시아, 쪽제비싸리의 순으로 좋았고 생엽(生葉)에 비하여 건엽(乾葉)이 더 우수한 기호성(嗜好性)을 나타내었다. In order to study on the utility for feed of several leguminosae tree leaves, the leaves of Lespedeza spp., Amorpha fruticosa and Robinia pseudo acacia were collected from several places of Daejon city and Daeduck-Kun at the different growing seasons. The leaf productivities, the change of the contents of chemical components on the different growing seasons. and the palatability trial were determined. The results were summarized as follows: 1. Leaf productivities of Amorpha fruticosa and Robinia pseudo acacia were higher than that of Lespedeza spp., and the highest production of Amorpha' fruticosa was showed in august and that of Robinia pseudo acacia was showed in september. 2. Crude protein contents of Lespedeza spp., Amorpha fruticosa and Robinia pseudo acacia were determined to 12.6, 18.63 and 15.87% respectively and the protein contents of them showed gradual decrease as growing. 3. Crude fat contents of Lespedeza spp., Amorpha fruticosa and Robinia pseudo acacia were determined to 9.00, 5.85 and 4.70% respectively, and they displayed gradual increase as growing, 4. Crude fiber contents of Lespedeza spp., Amorpha fruticosa and Robinia pseudo acacia were determined to 14.97, 12.61 and 9.80% respectively, and they showed gradual increase as growing. 5. The content of nitrogen free extract of Robinia pseudo acacia showed higher than those of Lespedeza spp. and Amorpha fruticosa, and all of them displayed gradual decrease as growing. 6. Crude ash contents of Lespedeza spp., Amorpha fruticosa and Robinia pseudo acacia determined to 4.40, 4.98 and 5.27% respectively, and variable changes were appeared as growing. 7. The results of palatability trial for three leaves showed superior to the order of Lespedeza spp., Robinia pseudo acacia and Amorpha fruticosa, and the dried leaves were more favorable than green leaves.
김종우,남명수,Kim, Jong Woo,Nahm, Myung Soo 충남대학교 농업과학연구소 1987 Korean Journal of Agricultural Science Vol.14 No.2
국산우유(國産牛乳)의 적정(適正)한 가열살균조건(加熱殺菌條件)을 검토(檢討)하기 위하여 $100{\sim}145^{\circ}C$의 온도조건(溫度條件)에서 초고온살균(超高溫殺菌) 방법(方法)에 따라 가열살균(加熱殺菌)하고 화학적조성(化學的組成) 및 미생물학적(微生物學的) 성상(性狀)의 변화(變化) 및 처리유(處理乳)의 보존성(保存性)을 시험(試驗)한 결과(結果)는 다음과 같다. 1. $100{\sim}145^{\circ}C$에서 가열살균(加熱殺菌)할 때 처리유(處理乳)의 pH는 6.55로부터 6.33으로 저하(低下)하였고 단백질(蛋白質), 지방(脂肪), 유당(乳糖) 및 회분등(灰分等)은 변화(變化)가 거의 없었으며 Casein 태질소(態窒素)및 비단백태질소량(非蛋白態窒素量)을 증가(增加)하였고 비(非) casein 태질소(態窒素)와 여과성질소량(濾過性窒素量)은 감소(減少)하였다. 2. Calcium함량(含量)은 가열온도(加熱溫度)의 상승(上昇)에 따라 원유(原乳)의 119.8mg/100g로부터 $145^{\circ}C$ 가열시(加熱時) 75.75mg/100g로 점차(漸次) 감소(減少)하였고, Vitanin C에 있어서는 1.37mg/100ml 로부터 0.82mg/100ml로 크게 감소(減少)하였으며 인공소화율시험(人工消化率試驗)에 있어서는 원유(原乳)의 14.07%로부터 가열온도(加熱溫度)의 상승(上昇)에 따라 $145^{\circ}C$에 있어서는 26.0%로 증가(增加)하였다. 3. 미생물수(微生物數)는 가열온도(加熱溫度)의 상승(上昇)에 따라 감소(減少)하여 $130^{\circ}C$에 있어서는 $0.5{\times}10^2/ml$로 감소(減少)하였고 $135^{\circ}C$ 이상(以上)에서는 검출(儉出)되지 않았으며 대장균(大腸菌) 및 호냉성균(好冷性菌)은 $100^{\circ}C$로부터 내열성균(耐熱性菌), 호열성인(好熱性茵) 및 곰팡이, 효모는 $125{\sim}130^{\circ}C$로부터 검출(儉出)되지 않았고 $135^{\circ}C$ 이상(以上)의 가열처리(加熱處理)에서는 $100^{\circ}C$의 살균율(殺菌率)을 나타내었다. 4. 가열처리유(加熱處理乳)의 보존시험(保存試驗) 결과(結果) 15일(日)까지는 $4^{\circ}C$, $25^{\circ}C$ 및 $37^{\circ}C$에 있어 산도(酸度), 일반조성분등(一般組成分等)이 변화(變化)되지 않았고 생균수(生菌數), 대장균수(大腸菌數), 호냉성균수(好冷性菌數)도 검출(儉出)되지 않았으며 20일(日)이 경과(經過)하면서 Vitamin C의 감소(減少)와 생균수(生菌數)의 증가현상(增加現象)이 표현(表現)되었다. The results of experiment to review the optimum pasteurization condition for the raw milk produced in Korea by using UHT procedure of $100-145^{\circ}C$, the changes in chemical composition, microbiological aspects and the keeping quality of the heat treated milk are summarized as follows: 1. In UHT milk sterilized at $100-145^{\circ}C$, the pH value decreased from 6.55 to 6.33 but protein, fat, lactose and ash did not show significance changes while casein nitrogen and non-protein nitrogen increased but non-casein nitrogen and filterable nitrogen decreased. 2. Calcium content decreased gradually from 119.8 mg/100 g of raw milk to 75.75 mg/100 g at $145^{\circ}C$ as the heat treatment increased and vitamin C decreased rapidly from 1.37 mg/100 ml to 0.82 mg/ 100 ml while artificial digestibility increased from 14.07% of raw milk to 26.0% as the heat treatment increased. 3. As the heat treatment increased, microorganism counts decreased to $0.5{\times}10^2/ml$ and were not found above $135^{\circ}C$ - coliforms and psychrotrophic bacteria from $100^{\circ}C$ thermoduric bacteria, thermophiles, mould and yeast from $125-130^{\circ}C$. Heat treatment above $135^{\circ}C$ showed 100% sterilization effect. 4. The result of preservation test for heat treated milk did not show any significant changes in titratable acidity and general composition at $4^{\circ}C$, $25^{\circ}C$ and $37^{\circ}C$ up to 15 days. Viable bacteria counts, coliforms and psychrotrophic bacteria were not found but loss of vitamin and increase in viable bacteria counts appeared after 20 days.
불임남성에서 Acetylcarnitine이 정액지표에 미치는 영향
김종우,이재석,박정수,김원태,서주태,Kim, Jong-Woo,Lee, Jae-Seok,Park, Jeong-Su,Kim, Won-Tae,Seo, Ju-Tae 대한생식의학회 2004 Clinical and Experimental Reproductive Medicine Vol.31 No.3
Purpose: To determine the efficacy of $Carnitil^{(R)}$ (acetylcarnitine, Hanmi, Korea) therapy in idiopathic oligoasthenospermic men. Materials and Methods: Forty-four subfertile men with abnormal semen parameters were treated between March, 2003 and March, 2004 with 3 g of $Carnitil^{(R)}$ daily for 3 months. Changes in semen parameters were evaluated 3 months after this therapy. Results: The mean age was 34.2 years and the mean follow-up duration was 3.7 months. In asthenospemic patients (n=28), semen analysis before and after $Carnitil^{(R)}$ treatment showed an increase in volume ($2.64{\pm}1.65\;ml$ vs. $3.10{\pm}1.60\;ml$), motility ($35.1{\pm}17.7%$ vs. $45.9{\pm}20.4%$) and viability ($51.4{\pm}20.3%$ vs. $59.3{\pm}13.6%$) respectively. In oligoasthenospermic patients (n=16), semen analysis before and after $Carnitil^{(R)}$ treatment showed an increase in sperm count ($10.7{\pm}54.4\;million/ml$ vs. $38.4{\pm}32.5\;million/ml$) respectively. Conclusions: These results suggested that in idiopathic oligoasthenospermic men the empirical medical therapy with acetylcarnitine may be considered as primary treatment.
김종우,Kim, Jong Woo 충남대학교 농업과학연구소 1987 Korean Journal of Agricultural Science Vol.14 No.2
국산우유(國産牛乳)를 원료(原料)로 한 적정(適正) 살균조건(殺菌條件)을 검토(儉討)하기 위하여 원유(原乳)를 $70^{\circ}C$, $75^{\circ}C$, $80^{\circ}C$, $85^{\circ}C$, $95^{\circ}C$ 및 $100^{\circ}C$의 각온도(各溫度)에서 15초간(秒間) 가열살균(加熱殺菌)하고 처리유(處理乳)의 화학적(化學的) 조성(組成) 및 미생물학적(微生物學的) 성상(性狀)의 변화상태(變化狀態)를 시험(試驗)한 결과(結果)는 다음과 같다. 1. 고온처리유(高溫處理乳)는 가열온도(加熱溫度)의 상승(上昇)에 따라 pH가 저하(低下)하였고 단백질(蛋白質), 지방(脂肪), 유당(乳糖) 및 회분등(灰分等)은 변화(變化)가 거의 없었으며 Casein 태질소(態窒素)와 비단백태질소함량(非蛋白態窒素含量)은 증가(增加)하고 비(非)Casein 태질소(態窒素) 및 여과성질소함량(濾過性窒素含量)은 감소(減少)하였다. 2. Calcium함량(含量)은 원유(原乳)의 119.78mg/100g로부터 $75^{\circ}C$ 가열(加熱)에서는 111.86mg/100g, $100^{\circ}C$ 가열(加熱)에서는 106.24mg/100g로 감소(減少)하였으며 Vitamin C에 있어서는 원유(原乳)의 $1.37mg/m{\ell}$로부터 $75^{\circ}C$ 가열(加熱)에서는 $1.15mg/100m{\ell}$, $100^{\circ}C$ 가열(加熱)에서는 $0.94mg/100m{\ell}$로 감소(減少)하였고 인공소화율(人工消化率)에 있어서는 가열온도(加熱溫度)의 상승(上昇)에 따라 증가(增加)하였다. 3. 생균수(生菌數)는 $75^{\circ}C$ 가열(加熱)에서 $9.0{\times}10^3/m{\ell}$로, $100^{\circ}C$ 가열(加熱)에서는 $3.4{\times}10^2/m{\ell}$로 감소(減少)하였고 대장균(大腸菌)은 $70^{\circ}C$ 가열(加熱)에서 검출(檢出)되지 않았으며 내열성균(耐熱性菌), 호열성균(好熱性菌), 호냉성균(好冷性菌) 및 곰팡이, 효모수도 가열온도(加熱溫度)의 상승(上昇)에 따라 크게 감소(減少)하였다. 4. 고온살균처리유(高溫殺菌處理乳)의 보존시험(保存試驗) 결과(結果) $25^{\circ}C$ 및 $37^{\circ}C$에 있어서는 l일후(日後)에 응고(凝固)하였고 $4^{\circ}C$ 보존(保存)에 있어서는 10일(日)까지 산도(酸度), 일반조성분(一般組成分), 미생물수등(微生物數等)이 변화(變化)가 거의 없어 우수한 보존성(保存性)을 나타내었다. The raw milk produced in Korea was heated at $70^{\circ}C$, $75^{\circ}C$, $80^{\circ}C$, $85^{\circ}C$, $90^{\circ}C$, $95^{\circ}C$ and $100^{\circ}C/15sec.$. The changes in chemical composition and microbiological aspects of the milk were summarized as following results: 1. In high temperature pasteurized milks as the heat treatment increased, pH value decreased but protein, fat, lactose and ash did not show significant changes in their contents while casein nitrogen and non-protein nitrogen increased but non-casein nitrogen and filterable nitrogen decreased in their contents. 2. Calcium content of raw milk decreased from 119.79mg/100g to 111.86mg/100g at $75^{\circ}C$ and to 106.24mg/100g at $100^{\circ}C$. Vitamin C decreased from $1.37mg/100m{\ell}$ of raw milk to $1.15mg/100m{\ell}$ at $75^{\circ}C$ and $0.94mg/100m{\ell}$ at $100^{\circ}C$. Artificial digestibility increased as the heat treatment got higher. 3. Viable bacteria counts decreased from $9.0{\times}10^3/m{\ell}$ at $75^{\circ}C$ to $3.4{\times}10^2/m{\ell}$ at $100^{\circ}C$. Coliforms were not found at $70^{\circ}C$ and thermoduric bacteria, thermophiles, psychrotrophic bacteria, mould and yeast decreased rapidly as the heat treatment increased. 4. The results of Keeping quality test for high temperature pasteurized milk showed that the' milks preserved at $25^{\circ}C$ and $37^{\circ}C$ were clotted just after 1 day but the milk preserved at $4^{\circ}C$ showed good shelf life which did not have any deterioration in titratable acidity, microorganisms and com positions.
시판(市販) 발효유(醱酵乳)의 미생물학적(微生物學的) 연구(硏究)
김종우,Kim, Jong-Woo 충남대학교 농업과학연구소 1978 Korean Journal of Agricultural Science Vol.5 No.2
시판(市販)되고 있는 발효유(醱酵乳)의 미생물학적(微生物學的) 성상(性狀)과 보존온도(保存溫度)에 따른 미생물(微生物)의 소장상태(消長狀態)를 확인(確認)하기 위하여 시판(市販) 발효유(醱酵乳)를 1978년(年) 7월(月)부터 10월(月)까지 수집(蒐集)하여 시험(試驗)한 결과(結果) 다음과 같은 결론(結論)을 얻었다. 1. 발효유중(醱酵乳中)에 함유(含有)된 생균수(生菌數)는 $50{\times}10^6$ 내지 $73{\times}10^7$, 유산균수(乳酸菌數)는 $40{\times}10^6$ 내지 $62{\times}10^7$였으며 대장균수(大腸菌秀)는 음성(陰性)을 나타내었다. 2. 발효유(醱酵乳)의 산도(酸度)는 0.468%~0.668%로서 대부분 기준(基準)에 달(達)하나 낮은 편이었다. 3. $5^{\circ}C$ 보존(保存)에서는 산도(酸度)의 변화(變化)가 거의 없었으며 $20^{\circ}C$ 보존(保存)에서는 평균(平均) 22.55%, $30^{\circ}C$ 보존(保存)에서는 평균(平均) 117.66%의 산도(酸度) 증가현상(增加現象)을 나타내었다. 4. 생균수(生菌數는) $5^{\circ}C$로 보존(保存)할 해 96시간(時間)에 이르기까지 큰 변화(變化)가 없었으며 보존온도(保存溫度)의 상승(上昇)에 따라 세균수(細菌數)는 24시한(時閒)까지 증가(增加)하다가 점차적(漸次的)으로 감소(減少)되었다. 5. 유산균수(乳酸菌數)는 $5^{\circ}C$로 보존(保存)할 때 가장 감소율이 적었으며 보존온도(保存溫度)가 상승(上昇)함에 따라 균수(菌數)는 현저하게 감소하였다. Extensive studies on the commercial fermented milks, which had been distributed over four months from July to October in 1978, were carried out for their microbial characterization including an investigation on the variations of bacterial populations under various storage conditions. 1. Total number of viable cells in the products were in between $5{\times}10^7$ cells/ml and $73{\times}10^7$ cells/ml, and $62{\times}10^7$ cells/ml, however no coliform bacteria were detected in the products. 2. Acidities of the products were not very high but fit in the standard as appeared to be in between 0.4869% and 0.6689%. 3. The acidities of the products showed little changes when stored at $5^{\circ}C$, but rises in 22.55% at $20^{\circ}C$ and in 117.66% at $30^{\circ}C$. 4. Total viable counts weren't varied much upto 96 hours when stored at $5^{\circ}C$, but increased during first 24 hours then decreased gradually at the higher temperatures. 5. Viable counts of lactic acid bacteria were decreased markedly with ascending the storage temperature, showing minimal variations when stored at $5^{\circ}C$.
디지털 콘텐츠 공유를 위한 개선된 Kerberos P2P 인증시스템 설계
김종우,한승조,Kim Jong-Woo,Han Seung-Jo 한국정보통신학회 2004 한국정보통신학회논문지 Vol.8 No.7
본 논문에서는 상호 인증을 위한 알고리즘인 Kerberos를 개선하여 P2P 시스템에 적합한 알고리즘을 제안하였다. 제안된 알고리즘은 Kerberos의 기능은 유지하면서 서버의 부담을 최소화하기 위하여 티켓 승인 서버의 기능을 상대측의 Peer에 부여하였다. 이러한 방법을 이용하여 티켓 승이 서버를 위한 서버의 개수 증가를 막고, 인증을 위한 서버의 기능을 최소화하여 서버의 부담을 최소화하였다. 제안된 알고리즘은 상호 인증을 위하여 서버는 최소한의 역활만하고, Peer간에 인증의 역할을 부여하면서도 강력한 상호 인증을 할 수 있다. 또한 P2P 시스템에 맞도록 시간위주의 인증 만료 시간보다 횟수 위주의 인증 제한 값을 주었다. 또한 본 논문에서는 이러한 알고리즘을 적용하여 P2P 인증 시스템을 설계하였다 In the paper, an algorithm fitted to P2P system was proposed by improving Kerberos which is an algorithm for mutual authentication. To keep the role of Kerberos and minimize load to server, the proposed algorithm imposed the server role of ticket recognition to the opposite peer. Using this method, the number of sewers as ticket recognition server was averted and function of server for authentication was minimized so that server load was mininized. The proposed algorithm enables the server to play the minimum of the role and to perform strong mutual authentication, while imposeing on the peers the role of authentication. To make suitable to P2P system, trial number oriented authentication limit was given, not time-oriented authentication expiration time. In the paper, a new P2P system was designed using this algorithm.
김종우,김용국 ( Jong Woo Kim,Yong Kook Kim ) 한국축산학회 1977 한국축산학회지 Vol.19 No.4
To select milk filter cloths for farm milk filtering and to investigate the suitable condition of milk filter cloths, several textile fabrics (Table 1, Fig.1) were tested the effect of filtering by sediment tester, the time taken for filtering, the effect of filter cloths on bacterial number in milk by filtering and the possibility of contamination of bacterial in milk from filter cloths in case of nonsterilization of cloths. And the results obtained are summarized as follows. 1. The effect of filtering was much better with Galgari, Sochang and Kwangmok than Eunchosa and Mangsa and the time taken for filtering was faster with Eunchosa, Mangsa, Tongsia and Galgai than Sochang and Kwangmok. 2. By filtering milk with Sochang and Kwangmok, the bacterial number in milk was reduced more than with other cloths but when filter cloths was not sterilized effectively, more bacteria was contaminated to milk from milk residue in cloths with Sochang and Kwangmok. 3. It was concluded that filter cloth of synthetic like nylon and about 0.05㎟ openings was suitable for milk filter cloths.