반추가축의(反芻家畜) 사료섭취량 조절과 반추에(反芻) 관한 문헌적 고찰

배동호,육종륭 한국낙농학회 1981 韓國酪農學會誌 Vol.3 No.2

The subject is reviewed with respect to the regulatory of feed intake in the ruminants. The importance of physical and physiological or metabolic regulatory mechanisms are discussed in relation to their effects upon the formation of various metabolites known to be rebated to feeding. Also, reviewed the role of rumination as a physical regulatory mechanisms.

AA6061-T6의 NaCl 수용액중에서의 S.C.C.연구

배동호,최용식 成均館大學校 科學技術硏究所 1983 論文集 Vol.34 No.1

Stress corrosion cracking may be defined as the spontaneous failure of a metal resulting from the combined effect of corrosion and stress. Particularly, under the specific corrosive environments contained chloride and sulphide, high strength steels and alloys are very susceptible to stress corrosion cracking. Accordingly, in this investigation, the stress corrosion cracking characteristics in the aluminum alloy AA6061-T6 sheet for the various percents NaCl solution environments wens studied. Experiments were conducted with the symmetric double edge cracked specimens at 80℃ and the various percentages of 5%, 10%, 15% and 20% in experimental room temperature. In order to accelerate the tests, 0.35% H_2O_2 was added to the NaCl solutions. The results obtained are as follows: (1) AA6061-T6 sheet in 5%, 10%, 15% and 20% NaCl solutions at 80℃, S.C.C. was occurred and according to rise the percents of NaCl solutions, incubation period was delayed and the crack growth rats was accelerated. In all cases, the crack propagation in the directions approximately perpendicular to the applied tensile stress. (2) S.C.C. behaviors in rte Log d(2a)/dt vs. K_1 relation curves provide a full representation ion I , region II and region III. (3) K_1S. c.c. value is defined around 39kg·mm^-3/2 for the AA6061-T6 sheet. (4) K_1c value is defined around 50kg·mm^-3/2 for the AA6061-T6 sheet. (5) The relation of d(2a)/dt vs. K_1 for region II is as follows: d(2a)/dt = C·10^mk1. The value of constant m is found 8.19 x 10 exp(-2).

억새의 숙기별 영양가 변화에 관한 연구

배동호,J . G . 웰츠 ( Dong Ho Bae,James G . Welch ) 한국축산학회 1979 한국축산학회지 Vol.21 No.6

Transplanted Miscanthus sinessis was studied for the evaluation of nutritive value in relation to the stage of maturity. Plants were cut at eight stages of maturity beginning on June 9, and at ten-day intervals until August 23. The dry matter content of the plant was approximately constant until July 19, which was the early boot stage, and increased rapidly until August 23. The protein content decreased uniformly with each delay in cutting until July 29 which was the prebloom stage, and leveled off until August 23. The protein content until the prebloom stage was similar to that of timothy hay. The CWC and ADF contents increased fast in earlier stages of maturity and leveled off in later stages. While lignification accelerated in later stages of maturity. Until the early bloom stage, the CWC content of Miscanthus sinensis was not high compared to other grass hays. But after the midbloom stages, it was the same or a little higher `than coastal Bermuda grass pellets. A linear relationship (Y=-0.473x+94.3, R²= 0.986) between the in vitro DDM (Y) and cutting date (x) was found. The DDM declined at a rate of 0.47% per day for each day`s delay in harvesting after June There was no relationship between calcium and phosphorous content and cutting date. The average calcium content was lower than in the early bloom stage of timothy hay, and phosphorous content was similar to that of timothy hay.

표면처리 박강판 spot용접 이음재의 응력분포와 부식피로강도 평가

배동호,임동진 대한용접접합학회 1996 대한용접·접합학회지 Vol.14 No.2

Fatigue strength of the spot welded lap joint is considerably influenced by corrosive environments. Particularly, the chloride and the sulfide are most injurious to strength of the spot welded lap joint. Therefore, there is a need to evaluate its effect to corrosion fatigue strength for safe life design of spot welded structures. In order to evaluate their corrosion fatigue strength, corrosion fatigue tests on the spot welded lap joints of the uncoated and the coated high strength steel sheets were conducted in air and in 10% NaCl solution. Corrosion fatigue strength of the uncoated specimens were entirely lower than the coated one in NaCl solution, but those of the coated specimens in NaCl solution were lower than in air. And stress distribution in single spon welded lap joint subjected to tension-shear load was investigated by the finite element method. Using these results, we tried to evaluate corrosion fatgue strength of the various spot welded lap joints with maximum stress $\sigma_{max}$ at edge on loading side of the spot welded lap joint. We could find that corrosion fatigue strength could be quantitatively and systematically rearranged by $\sigma_{max}$.

훈증압착처리 ( 燻蒸壓搾處理 )한 곡류가 한우비육에 미치는 영향

배동호,손채익,지설하 ( D . H . Bae,C . I . Son,S . H . Chee ) 한국축산학회 1981 한국축산학회지 Vol.23 No.3

A feeding trial and digestibility tests were conducted to know the effects on fattening performance and digestibility of steam-rolled corn and barley grain compared with ground ones. Twenty eight Korean Native bulls (350㎏) and 16 mature rams were used as test animals for 100 days in feeding trial and 15 days in digestibility test, respectively. The steam-rolled corn grain were significantly(P$lt;.05) increased in DM and NFE digestibility, and in TDN content compared ground one. The steam-rolled barley, however, did not response (P$lt;.05) in statistics of those, but tended to be increased. In feeding trial, the animals fed steam-rolled corn grain were increased body weight gain and decreased feed consumption per ㎏ gain compared the animals fed ground one. Otherwise, the animals fed steam-rolled barley were de creased body weight gain and increased feed consumption per unit of gain com pared ground one. In slaughtering result, the carcass percent did not differ between steamrolled and ground in both of the grains.

낙농산업발전과 TMR의 이용

배동호 한국낙농육우협회 1993 낙농·육우 Vol.13 No.3

점용접 결합부재의 파괴역학적 피로강도 평가

배동호,J.Niisawa,H.Kitagawa,최용식 한국자동차공학회 1988 한국자동차공학회 학술강연초록집 Vol.- No.-

Study on the nutritive Value of the Miscanthus sinensis in relation to its maturity

배동호 한국축산학회 1978 한국축산학회지 Vol.20 No.5

傾斜지게 결합된 spot 鎔接 箱型斷面部材의 應力과 變形解析 : 굽힘하중이 작용하는 경우 When Applied Bending Load

裵東鎬 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.1

In automobile frame work, thin walled box-sectional members are widely used. In such members, obliquely jointed ones can be often found. Exact solution of stress distribution and the strain for such members is very difficult owing to complicated strain at obliquely jointed part. However, the designer of automobile body structure must know the stress distribution and the strain on them for their more resonable design. In this report, an approximate estimation obtained by changing actual automobile frame of the obliquely jointed box-sectional member into simply simulated model for structural analysis is reported. Estimated models are three kinds of obliquely attached angles of 30˚, 45˚ and 60˚. Obtained results are as follow : 1) The axial stresses highly distribute between the box-beam and the I-beam and are influenced by the attached angle of the member. 2) The maximum axial stress of the flange is occurred at the fixed end of the short-flange, and its' value is nearly 2 times as much one of the long-flange. 3) According as the attached angle of the member increases, shear centre moves from the long-flange side to short-flange and deflection of the free end of the member decreases. 4) According as the attached angle of the member increases, the maximum principal stresses arround fixed end of the member decreases.

가소제에 따른 탈지강 단백질 필름의 물리적 특성

배동호,김경미 建國大學校附設農業資源開發硏究所 2002 農資源開發論集 Vol.24 No.-

Biodegradable firms were prepared from rice bran protein with 1%, 1.5%, 2% and 2.5% glycerol and 1%, 1.5%, 2% and 2.5% sorbitol. The effects of glycerol and sorbitol contents on tensile strength, % elongation and water vapour permeability of the films were studied. Films prepared with sorbitol had higher tensile strengh, lower % elongation and lower water vapour permeability than the films prepared with glycerol.