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저온환경에 있어서 VFA - TG 인공영양사육 면양의 제1위내 VFA 조성비율이 일반임상소견 및 제1위액성상에 미치는 영향
홍경선,정태영,좌야굉명,중도방야,지하농랑,안보가일 한국축산학회 1997 한국축산학회지 Vol.39 No.5
This study was conducted to investigate the combined effects of VFA composition of rumen fluid and cold exposure on the general clinical view and ruminal fermentation characteristics in sheep. Each infusion group was subjected to either thermoneutral (20±2 ℃) or cold environment (2±2℃) for 4 days. The total infusate of nutrients was examined in sheep via the technique of continuous alimentation. Four adult Suffolk sheep fitted with a permanent ruminal cannula and a simple T-shaped duodenal cannula were used. A peristaltic pump was used to infuse the solutions of volatile fatty acid triglycerides (VFA-TG, triacetin: tripropionin: tributyrin) consisting of 70:20:10 (low propionin division: LP) and 50:40:10 (high propionin division: HP) on the basis of energy and minerals into the rumen, and casein solution into the duodenum. The results obtained are summarized as follows: 1. During the cold exposure (latter half of the infusion period), respiration rate decreased (P$lt;0.10), but heart rate tended to increase in the thermoneutral environment. And respiration rate had no significant difference between the levels of VFA-TG solutions (LP and HP division), but heart rate was higher in the HP division than in the LP division (P$lt;0.10). 2. In the HP division, rectal temperature was lower (P$lt;0.001) in the cold exposure than in the thermoneutral environment, but remained unchanged by the temperature treatment in the LP division. During the thermoneutral environment, rectal temperature was higher in the HP division than in the LP division (P$lt;0.01), but remained unchanged by the levels of VFA-TG solutions in the cold exposure. 3. Urine pH values maintained the value of the thermoneutral environment during the latter half of the infusion period, and was lower (P$lt;0.05) in the HP division than in the LP division. 4. Ruminal total volatile fatty acid (VFA) concentration tended to increase in the cold exposure compared to that in the thermoneutral environment, and did not affect with the levels of VFA-TG solutions. 5. In the LP division, molar percent of acetate was higher (P$lt;0.10), but molar percent of propionate was lower (P$lt;0.05) in the cold exposure than in the thermoneutral environment. As a result, the ratio of acetate to propionate (A:P ratio) increased more (P$lt;0.10) in the cold exposure than in the thermoneutral environment. In the HP division, molar percents of acetate, propionate and butyrate were not affected by the temperature treatments. The results showed that the A:P ratio was not affected by the environmental temperature treatments. However the ratio was increased in the LP division than in the HP division (P$lt;0.001). 6. Ruminal pH values was not affected by the temperature treatments, but was higher (P$lt;0.001) in the LP division than in the HP division. And ruminal pH values tended to be higher in the HP division than in the LP division. 7. Infusion of VFA-TG into the rumen caused a marked increase (P$lt;0.01) in ruminal TG concentration during the cold exposure (latter half of the infusion period), but it was not affected by the levels of VFA-TG solutions.
홍경선,정태영,좌야굉명,지하농낭,중도방야,안보계일 한국축산학회 1997 한국축산학회지 Vol.39 No.4
This study was conducted to investigate the combined effects of VFA composition of rumen fluid and heat exposure on the blood constituents and acid-base balance in sheep. Each infusion group was subjected to either thermoneutral(20±2℃) or heat(30±2℃) environment for 4 days. Four adult Suffolk sheep fitted with a permanent ruminal cannula and a simple T-shaped duodenal cannula were used and infusion nutrients were examined by use of the continuous alimentation technique. A peristaltic pump was used to infuse the solutions of volatile fatty acid triglycerides(VFA-TG) consisting of 70 triacetin : 20 tripropionin : 10 tributyrin (low propionin division: LP) and 50 triacetin : 40 tripropionin : 10 tributyrin (high propionin division: HP) on the basis of energy and minerals into the rumen, and casein solution into the duodenum. The results obtained are summarized as follows: 1. Plasma glucose and insulin concentrations almost remained unchanged by the temperature treatment and the levels of VFA-TG solutions(LP and HP). Plasma lactate concentration increased(P$lt;0.05) during the heat exposure at the HP division, but was not affected by the levels of VFA-TG solutions. Plasma TG concentration increased(P$lt;0.01) during the heat exposure at the LP division probably due to the days of VFA-TG infusion rather than the heat stress. Plasma urine-N concentration tended to be higher under the heat exposure and increased in the HP than LP division. 2. During the heat exposure at the LP division, blood HCO₃-concentration almost did not exhibit clear changes, but blood Pco₂ tended to be decreased and blood pH tended to be increased (condition of respiratory alkalosis), and blood base excess concentration tended to be higher. 3. Blood Hb concentration tended to be lower in the LP division but remained unchanged by the temperature treatment in the HP division and was not affected by the levels of VFA-TG solutions. 4. Blood Na^+ concentration tended to be lower under the heat environment than the thermoneutral environment. Blood K^+ concentration remained unchanged by temperature and the levels of VFA-TG solutions. Blood Ca^(2+) concentration
Tumor Imaging by Monoclonal Antibodies Labeled with Radioactive Metal Ions
( K. Endo ),( H. Sakahara ),( T. Nakashima ),( M. Koizumi ),( M. Kunimastsu ),( H. Ohta ),( T. Furukawa ),( Y. Ohmomo ),( Y. Arano ),( A. Yokoyama ),( K. Okada ),( O. Yoshida ),( S. Hosoi ),( T’ Nakam 대한핵의학회 1984 핵의학 분자영상 Vol.18 No.2
Status of JENDL High Energy File
Y. Watanabe,K. Kosako,S. Kunieda,S. Chiba,R. Fujimoto,H. Harada,M. Kawai,F. Maekawa,T. Murata,H. Nakashima,K. Niita,N. Shigyo,S. Shimakawa,N. Yamano,T. Fukahori 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The present status of the JENDL high-energy file is reported. The recent version (referred to as JENDL/HE-2007) contains neutron and proton cross section data for energies up to 3 GeV for 107 nuclides over the wide mass range from H to Am. The newly evaluated data for 41 nuclides have been added to the first version (JENDL/HE-2004) along with some revisions. The JENDL/HE-2007 includes neutron total cross sections, nucleon elastic scattering cross sections and angular distributions, nonelastic cross sections, production cross sections and double-differential cross sections of secondary light particles (n, p, d, t, ^3He, α, and π) and gamma-rays, isotope production cross sections, and fission cross sections in the ENDF-6 format. The evaluations were performed on the basis of experimental data, nuclear model calculations, and systematics based on measurements. The evaluated cross sections are compared with available experimental data and the other evaluations. Some results of benchmark tests with MCNPX codes are shown.