http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
온도에 따른 비정질 금속 Co66Fe₄Ni₁B₁₄Si15의 자기 임피던스 효과
김용국(Y. K. Kim),김택기(T. K. Kim),김성일(S. I. Kim),이희복(Heebok Lee) 한국자기학회 1998 韓國磁氣學會誌 Vol.8 No.1
The temperature dependence of the magnetoimpedance (MI) effect is important both for scientific study and for thermal stability of MI sensors. We have performed the measurement of MI effect in amorphous Co_(66)Fe₄Ni₁B₁₄Si_(15) (Metglas 2714A) ribbon from a cryogenic chamber where the temperature of the sample can vary from 10 K to 300 K. The ac current was fixed at 10 ㎃ for all measured frequencies ranging from 100 ㎑ to 10 ㎒.<br/> The magnetoimpedance ratio (MIR) was revealed the drastic increment as a function of MIR (T) = MIR (0) exp(cT²) where c is a constant. The measured MIR values at room temperature are usually 2-3 times larger than the data measured at 10 K for all measured frequencies. However, the shapes of the MIR curves are remained. This result shows the potential application of the MI effect for a temperature sensor. The frequency dependence of MIR has shown the typical tendency where the maximum values of MIR are increasing and also the shapes of MIR curves are getting broader as the measured frequency increases.
김용국 ( Y K Kim ),이수기 ( S K Lee ) 한국축산학회 1995 한국축산학회지 Vol.37 No.6
Six lactating Holstein dairy cows which were producing about 20 ㎏ milk per day were assigned in a swich back design to the diets without (control) or with fungal additive (treatment). All cows (n=6) were fed concentrate mix, soybean meal, com silage, alfafa hay and rice straw without or with fungal additive. Treatment cows produced 20.5 ㎏ milk daily, while control cows produced 18.9 ㎏. Milk fat and protein percentages were 3.SS and 3.51% for control cows and 3.94 and 3.66% for treatment cows. The molar concentration of ruminal acetate, propionate, and butyrate, and acetate to propionate ratio were similar between control and treatment cows. However, ruminal pH tended to be higher for treatment cows (7.1) than control cows (6.8), whereas ruminal ammonia concentration (㎎/㎗) was lower for treatment cows (15.3) than control cows (12.7). Dry matter intakes were 17.4 ㎏/d for control cows and 17.6 ㎏/d for treatment cows. Dry matter digestibility tended to be higher for treatment cows (71.8%) than for control cows (70.0%). The results indicate that the lactational responce of dairy cows may to be improved by feeding fungal additive which was produced from Fonaitella fraxinea.
한국 야생 멧토끼 ( Lepus sinensis coreanus ) 의 건물 섭취량과 소화율
김용국(Y . K . Kim),김용인(Y . I . Kim) 한국축산학회 1993 한국축산학회지 Vol.35 No.5
Body weights, dry matter intakes, and dry matter digestibilities by wild Korean mountain hares were determined. Four haves (two pairs) were assigned to the diets containing sweet potato + kudzu vine (Diet 1) and sweet potato + soybeans + kudzu vine (Diet 2). Body weight of males were 1,548 g for Diet t and L,528 g for Diet 2, and those of females were 1,419 g for Diet 1 and 1,408 g for Diet 2. Daily dry matter intakes by males were L20.7 g for Diet I and 108.3 g for Diet 2 (P$lt;.01), and those by females were 109.9 g for Diet 1 and 92.4 g for Diet 2 (P$lt;.01). Dry matter digestibilities by males were 66.2% for Diet 1 and 68.1% for Diet 2 (P$lt;.01), and those by females were 72.9% for Diet 1 and 77.4% for Diet 2 (P$lt;.01).
육성초기 한국재래산양 사료로서 아까시나무 파쇄물의 영양가치
강병호,박덕섭,김건중,김용익,김용국 ( B . H . Kang,D . S . Park,K . J . Kim,Y . I . Kim,Y . K . Kim ) 한국축산학회 1998 한국축산학회지 Vol.40 No.2
Nine early growing Korean native goats were assigned in a randomized design to one of three diets containing of alfalfa hay(60%); alfalfa hay diet, alfalfa hay(30%) plus acacia wood chip(30%); acacia wood chip 50% diet, and acacia wood chip(60%); acacia wood chip 100% diet, of total ration to determine the nutritional value of acacia wood chip as a roughage source. Total mixed diet containing 60% roughages(alfalfa hay or acacia wood chip) and 40% concentrate were fed individually for 3 weeks. The daily gain, dry matter (DM) intake and apparent digestibilities of DM, energy and nutrients were determined. DM intake and daily gain were higher for goats fed alfalfa hay diet(637.8g/d and 54.1 g) than for goats fed acacia wood chip 50% diet(620.6g/d and 44.2g) and wood chip 100% diet(579.4g/d and 42.4g), however, those were not statistically different between groups(P$gt;0.05). Apparent digestibilities of DM, energy, and nitrogen were higher for goats fed alfalfa hay diet(73.00%, 72.03% and 77.32%) than for goats fed acacia wood chip 50% diet(64.75%, 61.90% and 64.75%) and wood chip 100% diet(58.33%, 54.77% and 58.77%)(P$lt; 0.05). Apparent digestibilities of fiberous components were higher for goats fed alfalfa hay diet(54.17%, 63.73% and 56.74%) than goats fed acacia wood chip 50% diet(42.08%, 51.79% and 44.64%) and acacia wood chip 100% diet (41.55%, 48.93% and 26.55%) (P$lt;0.05). However, those were not statistically different between acacia wood chip 50% diet and wood chip 100% diet. It could be concluded that acacia wood chip including leaves harvested during the summer could be a valuable roughage source for early growing Korean native goats.