조선후기 울릉도ㆍ독도 수토제도의 주기성 및 지속성에 대한 연구

백인기 대한지리학회 2010 대한지리학회 학술대회논문집 Vol.2010 No.5

신경망을 이용한 정성적 자료의 정량적 정보로의 변환에 관한 연구

전영호,백인기 弘益大學校 科學技術硏究所 1998 科學技術硏究論文集 Vol.9 No.2

제품의 개발은 설계단계에서부터 소비자의 요구를 철저히 반영하여 최종 제품이 소비자에게 인도될 때까지 발생할 수 있는 손실을 최소화할 수 있어야 하며, 이는 애매하고 추상적으로 표현되는 소비자의 제품에 대한 정성적 평가를 정량적 정보로 변환하는 과정중에 발생할 수 있는 문제점을 최소화함으로써 달성될 수 있다. 본 연구는 대상선정, 의미차별화척도를 이용한 설문, 제품평가자의 성향분석, 성향분석결과에 의한 신경망 훈련자료 구축을 통해 각 소비자의 제품에 대한 평가, 즉 정성적 자료를 정량적으로 변환함으로써 정성적 자료와 정량적 정보간의 차이를 극소화할 수 있는 방안을 수립하고자 한다.

反芻胃 내 纖維素分解 微生物에 의한 化學的 處理 국내산 밀짚 醱酵特性에 관한 硏究

裵貴石,李相碩,尹光老,張文伯,白仁基 中央大學校 食糧資源硏究所 1994 食糧資源硏究所 論文集 Vol.6 No.1

本 實驗은 韓國在來山羊의 反芻胃 內에서 分離·同定된 纖維素分解微生物을 利用하여 化學的處理를 한 한국산 밀짚과 無處理 밀짚의 衛生的 分解力의 차이를 알기위해 醱酵産物, 電子顯微鏡檢定을 실시하였다. 그 結果를 要約하면 다음과 같다. 1. pH水準은 암모니아처리 밀짚에서 큰 변화는 없었으나, 다소 감소하였다. 2. DM消化率은 암모니아처리 밀짚이 무처리 밀짚 보다 높았으며, 특히 F. succinogens에 서 제일 높았다. 3. ADF消化率은 암모니아처리 밀짚에서 전체적으로 높았다. 4. 微生物蛋白質代謝는 암모니아처리구에서 增加하였으며, ammonia nitrogen 함량은 모든 암모니아 처리구에서 72시간 醱酵期間동안 천천히 높아짐을 보였다. 5. 化學的處理에 의한 밀짚의 化學的·物理的構造의 부분적인 變化는 纖維素分解微生物에 의한 分解力과 밀짚에서 微生物의 적소를 增加시켰다. The isolated ruminal cellulolytic bacteria in the rumen of the Korean native goat-Fibrobacter succinogenes, Butyrivbrio fibrisolvens, Ruminococcus flavefaciens-were incubated on chemical treated Korean wheat straw in mono-and coculture. The experiment were designed to examine the effects of ammonia treatment of Korean wheat strew by rumen cellulolytic bacteria on in Vitro conditions for fiber degradation, and to determine the effect of treatment on fractions of wheat straw. Ammonia treated wheat straw was compared with untreated wheat straw for 0,24,48, and 72h by rumen cellulolytic bacteria. In the experiment, pH, ammonia-nitrogen, and ADF and scanning electorn micrograph were studied. The results obtained in this study are as follows; 1. pH values had no remarkable changes by the ammoniation of wheat straw, but slightly decreased in process of incubation time with ammonia treatment. 2. Dry matter digestibility of ammonia-treated wheat was higher than those of untreated wheat straw, and was highest for F. succinogenes. 3. ADF digestibility of amonia-treatment wheat straw was generally higher than untreated group. 4. Microbial protein synthesis was increased with ammonia treatment and concentration of ammonia nitrogen was increased steadily the fermentation proceeds for 72 hours in the ammonia-treated group. 5. A partial modification of chemical physical structure of straws by chemical treatment would enhance the microbial degradation and more extensive formation of niche of wheat straw by rumen cellulolytic bacteria.

Canola박과 종자의 급여가 산란계의 혈장과 계란의 thiocyanate 이온함량에 미치는 영향

백인기,Robblee, A R 한국축산학회 1984 한국축산학회지 Vol.26 No.6

An experiment was conducted to determine the influence of feeding canola meal (CM) and canola seed (CS) to laying birds on the level of thiocyanate ion in blood plasma and egg. Blood and egg samples were obtained from Single Comb White Leghorn hens, 50 weeks of age, which had been placed on 16 different CM and CS diets. Concentration of thiocyanate ion in samples was determined with a gas chromatography equipped with an electron capture detector. The levels of thiocyanate ion in blood plasma of birds fed 10 to 20% of CM or 10 to 15% of CS were 4 to 5 times higher than those of soybean meal (SBM) controls. The levels of thiocyanate ion in egg serum of birds fed 10 to 20% of CM or 5 to 15% of CS were 1.5 to 2.5 times higher than those of SBM controls. The level of thiocyanate ion in blood plasma and those in egg serum were highly correlated (r = .87, P $lt; .01). The influence of CS on the level of thiocyanate was much greater than CM if comparison is made on oil-free basis. The level of energy or source of energy may influence the level of thiocyanate ion in egg serum of birds fed CS diets.

국산박류의 사료가치에 관한 연구 1 . 부로일러사료에 있어서 대두박의 사용수준결정을 위한 연구

백인기,한인규,김춘수 ( In K . Paik,In K . Han,Chun S . Kim ) 한국축산학회 1975 한국축산학회지 Vol.17 No.4

An experiment was conducted to study the feeding value of extracted 44% soybean oil meal (SBM) produced by Dong Bang Oil Co. and also to determine the optimum using level of this meal. Three hundred broiler chickens were used for 8 weeks feeding trial and successive metabolic trial. Results obtained are as follows; 1. Body weight gain and feed intake increased significantly (P$lt;0.01) as the level of SBM increased in feed. However, no significant differences were observed in feed efficiency among 5%, 10%, 15% and 20% SBM groups. Only 0% SBM group showed significantly (P$lt;0.01) poor feed efficiency compared with other groups. 2. Protein utilizability of finisher diet increased as the level of SBM increased, but the differences were not statistically significant. On the other hand, utilizability of crude fat and total carbohydrate of 15% and 20% SBW groups were significantly (P$lt;0.05) lower than the other groups. 3. As the result of urease activity test was negative, SBM used was considered to be fully heat-treated. 4. General composition and amino acids content of local SBM was very similar to that of standard SBM of NAS. 5. Unit production cost for broiler meat decreased as the using level of SBM increased in broiler diet.

Fructooligosaccharides 의 급여가 육계의 장내 Salmonella typhimurium 증식 억제에 미치는 효과

백인기,남궁환,최규형 한국축산학회 1994 한국축산학회지 Vol.36 No.3

A feeding trial was conducted to investigated the effects of 44% fructooligosaccharides(FOS) argainst colonization of Salmonella typhimurium in broiler chickens, In a 2∼4 factorial arrangement (two challenge levels of Samonellart at 10³ and 10^6·four FOS levels at 0, 0.5, 1, and 2%), 14 chicks were randomly assigned to each treatment. On the 3rd day posthatch, chicks were challenged with Salmonella typhimurium by crop gavage and stressed by deprivation of feed and water on day 11 for 24 h. Weight gain and feed intake were measured on the 10th and 18the day posthatch, when seven chicks per treatment were saerifieed each time. Intestinal contents and sections of intestine were collected and processed for analysis. There were no significant differences in weight gain and feed/gain ratio between 10³ and 10^6 treatment groups. The FOS supplemented groups showed a numerical improvement over the control in weight gain by 16∼28% on the 10th day and by 24∼31% on the 18th day posthatch. The effects of FOS supplementation on the performance tended to be greater in the Salmonella 10³ treatment groups than in 10^6 treatment groups on day 10. The colony forming units (efu) of Salmonella typhimurium in the cecal contents were very low in the FOS supplemented groups compared to the control and the percentages of the cecal cultures that tested positive for Salmonella typhimurium were 29∼71 for FOS supplemented groups compared to 100 for the control. On day 18, the colony forming units of Salmonella typhimurium in the cecal contents and cecal cultures that were positive for Salmonella typhimurium were numerically lower in the 19³ treatment groups than the 10^6 treatment groups, and lower in the FOS supplemented groups than in the control, bu there were no differences among the FOS supplemented treatments. The pH of the ceal contents was lower in the FOS supplemented groups than in the control. The length of ileal microvilli in the FOS supplement groups was about two times longer than that of the control group. It was notable that the provision of FOS to the broiler diets alleviated the Salmonella-induced necrosis in the cecal mucosal epithelium. In conclusion, the supplementation of FOS at the level of 0.5% in the broiler diet could suppress the cecal Salmonella colonization and alleviated the reduction of broiler performance induced by Salmonella invasion.

幼小兒 腫瘍에 關한 檢索

白仁基,洪錫宰,李東久 慶北大學校 醫科大學 1981 慶北醫大誌 Vol.22 No.1

1969年 1月부터 1978年 12月까지 滿 10年間 慶北大學敎 醫料大學 病理學敎室 및 大邱東山基督病院 病理科에서 組織學的으로 診斷된 滿 15歲 以下의 幼小兒腫瘍 491例를 對象으로 統計的으로 比較檢索한 結果를 要約하면 다음과 같다. 總 491例中 良性腫瘍이 305例(62.1%), 惡性은 186例(37.9%)였으며 惡性의 62.4%가 男子에서 發生하였다. 良性腫瘍은 主로 6歲 以上에서 觀察되었으나, 惡性에서는 약 半數가 5歲 以下에 分布하고 있었으며 惡性腫瘍의 13例(7.0%)는 1歲 미만의 영아에서 나타났다. 良性腫瘍에서 흔한 型은 毛細血管腫, 水滑液囊腫(cystic hygroma), 扁平上皮乳頭腫 順이었으며 惡性은 鋼膜芽細胞腫, 惡性淋巴腫 그리고 胎生癌의 順으로 頻發하였다. 小兒에서 稀有한 堅細胞癌, 甲狀腺乳頭狀癌, 耳下腺細胞癌을 各各 1例씩 觀察한 것은 特記할만한 것으로서 이들 腫瘍의 發生機轉을 說明하는데 參考되어야 할 것으로 생각된다. A statistical study was carried out on 491 cases of infants and children with tumors, diagnosed by surgical biopsy at department of pathology, Kyungpook, National University, School of Medicine and pathologic department of Daegu Presbyterian Medical Center during the period of 10 wears, from January 1969 through December 1978. The results were as follows; Cut of 491 cases, 305 (62.1%) were benign and 186 (37.8%) were malignant tumors. Male were more affected the female (62.4%) of malignant tumor, showing male to female ratio 1.7:1. Most of the benign tumors were diagnosed above 6 years of age. In malignant tumors, 45% occured below 5 years of age and 7% were under 1 year of age. In benign tumors, capillary hemangioma was in highest frequency and cystic hygroma, squamous papilloma were in next order. Among malignant tumors, retinoblastoma, malignant lymphoma and embryonic carcinoma were in order of frequency. Author observed 1 case in each of renal cell carcinoma, papillary carcinoma of thyroid gland and acinic cell carcinoma of salivary gland which could be a good reference to suggest the pathogenesis of these tumors.

육계의 적정생산을 위한 사양프로그램

백인기 대한양계협회 1985 월간 양계 Vol.17 No.7

사료수급정책의 개선과 생산비 절감방안

백인기 대한양계협회 1987 월간 양계 Vol.19 No.11

사료의 생산비를 절감하여 국제경쟁력을 높이고 결과적으로 축산물의 국제경쟁력을 높이는 것이 모든 정책 결정에 우선적으로 고려되어야 한다. 이를 위하여 행정 및 제도적으로는 사료용원료수입품목의 자유화, 곡류의 수입쿼터제 철폐, 국산곡류의 사료화지양, 사료원료 및 사료에 대한 세제 개선, 사료관리법개선 등의 조치가 취해져야 될 것인데 이러한 문제점들이 개선된다면 20-30$\%$의 사료의 가격경쟁력이 향상되리라고 기대된다. 사료공장의 입장에서 고려해야 할 과제들은 기술의 개선, Computer의 적극응용, 생산시설의 자동화, 생산품의 전문화, 유통질서의 확립 등을 들 수 있는데 이러한 과제들을 발전적으로 해결하므로써 생산비의 절감을 통한 국제경쟁력을 더욱 제고시킬 수 있을 것이다.

서울백병원 혈액은행 현황

백인기 인제대학교 1987 仁濟醫學 Vol.8 No.4

서울백병원 혈액은행의 최근 2∼3년 동안의 헌혈, 성분 제재 사용 현황, 전혈 사용 현황, 질환별 수혈 현황 및 1인 평균 수혈량 등을 통계 처리하여 혈액 사용의 현황을 제시하고자 하였다. The blood bank of Seoul Paik Hospital has the longest history as a blood bank of private hospital in Koera. We have served for Clinician during last 33 years. Total transfusion amount has increased slowly since the foundation of blood bank, but we have some problems still to solve in future steps. Author summarized the recent status about some fields of transfusion with recent 2 to 3 years data to compare with the status in other institutions in Korea. Blood component transfusion and blood donation have been remarkable increased during recent 2 to 3 years, especially since last autumn (1986). The reason might be activated cardiovascular surgery & active liver surgery since last autumn. Some data about transfusion were briefly summarized as follows : 1.The number of blood donation increased 2.7 times during 1987 compared with the number in 1985. 2.The ratio of blood component therapy increased 2.4 times during 1987 compared with the ratio in 1985. 3.Total transfusion amount (the number of whole blood used plus the number of blood components used) increased 2.4 times during 1987 compared with the amount in 1985. 4.Lots of transfusion was done in cardiovascular surgery compared with the one in other disease. 5.Average transfusion amount per 1 patient was 5.9 units. 6.The recipient of 1 unit transfusion still occupied 17.8% among the total recipients of transfusion. 7.Effective platelet transfusion is impossible without using apheresis. 8.Emergency fresh whole blood transfusion without any laboratory tests could make problems if we look forward AIDS.