복숭아나무 揷穗의 크기와 저장양분의 發根과 圃場活着에 미치는 影響

林敬鎬,金炳三,黃仁澤,金月洙,金光秀,金相喆 全南大學校 農業科學技術硏究所 1998 農業科學技術硏究 Vol.33 No.-

복숭아나무 경지삽목 번식에 있어서 삽수 굵기와 길이 및 삽수내 저장 양분 함량이 발근과 포장활착에 미치는 영향을 구명하였다. 삽수 굵기는 直徑 5∼8㎜의 삽수가 발근율이나 발근수, 발근장 등 뿌리 발달이 좋았으나 포장 활착율은 삽수재 저장양분이 많은 직경 8∼11㎜가 좋았다. 삽수 길이는 20∼30㎝ 처리가 발근율, 발근수, 발근장 등 발근력이 좋았으나 포장 활착율은 삽수재 잔존 저장 양분이 많은 30㎝ 길이가 좋았다. 삽목용 적정삽수는 8㎜ 굵기에 30㎝ 길이가 가장 효과적이었으며 포장에서 활착후 묘고, 간경 등 생육은 모든 처리에서 116㎝ 이상, 20.4㎜ 이상으로 삽목 당년에 우량묘가 생산되었다. This experiment was studied to examine the effect of cutting size and storage nutrient on rooting and survival in field using hardwood cutting of 'Sunaga Wase' peach to establish mass production system of rooted cutting. Cuttings having 5 to 8㎜ in stem diameter showed the best rooting percentage, root number and root length. In the survival in field, the stem diameter of 8 to 11㎜ showed the highest survival rate and less consumption of storage nutrient during cutting. Those hardwood cuttings of 20 to 30㎝ in stem length showed the best rooting, and higher survival in field was obtained in 30㎝ long cuttings. After transplanting rooted cuttings to field, tree height and trunk diameter of 'Sunaga Wase' peach was 116㎝ and 20.4㎜, respectively.

복숭아 품종별 경지 삽목에 있어서 삽수기부의 Wounding이 발근 및 활착에 미치는 영향

林敬鎬,金炳三,金月洙,羅良基,鄭淳柱 전남대학교 농업과학기술연구소 2000 農業科學技術硏究 Vol.35 No.-

The effect of wounding method on rooting and field adaptation was studied in 'Sunaga Wase' peach and several cultivars in order to establish mass production system of rooted cutting. Rooting was more than 90% in 'Sunaga Wase', 'Kurakata wase', 'Wolbongjosaeng' and 'Wolmijosaeng', and Root number, weight and length showed similar tendency, however, taking root in field was the highest, as much as 75.8% 'in Sunaga Wase'. Modified wounding tool (MWT) was more effective than current method because rooted cutting with MWT showed high root growth including rooting, root number, root weight and saved wounding time.

Secondary Ion Mass Spectroscopy를 이용한 Palladium Silicide형성에 관한 연구

林秉洙 成均館大學校 科學技術硏究所 1983 論文集 Vol.34 No.2

In this paper, the results of the measurements made to characterize the solid state interaction during the formation of Pd_2Si film are presented. High purity palladium was sputter deposited in the thickness of 200 to 600nm on the cold [111] p-type Silicon single crystalline wafers to form thin Pd_2Si layers through the annealing treatment at 300℃ under the vacuum of 10^-6 torr. The analysis techniques includcd the following : X-ray determination of silicide formation, Auger Electron Spectroscopy(AES) during depth profiling to determine silicide location, Secondary Ion Mass Spectroscopy (SIMS) to find the extent of isotope seperation during silicide growth. As results, an epitaxial [001] Pd_2Si layer was found to follow the parabolic, (time)^+ type, growth behaviour with growth constant of 7.0 x 10 exp(-13) ㎠/sec at 300℃. Constant isotope seperation of Si atoms was observed in the Pd_2Si layer. From the results, it is concluded that the growth of Pd_2Si on the [111] Si single crystalline entails the lattice diffusion of Silicon atoms.

Rapid Thermal Annealing 에 의한 Titanium Silicide 형성에 관한 연구

林秉洙 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.1

The growth kinetics during the formation of Titanium silicide(TiSi_2) by Rapid Thermal Annealing (RTA) of Ti layer deposited on <100> single crystal silicon substrate has been investigated. The interfacial TiSi_2 layer grows as the sguare root of time, indicating that the silicide growth process is diffusion-limited. The activation energy of about 1.99±0.2 eV has been observed in the RTA temperature range of 750∼900℃. These results are in good agreement with the reported results of the conventional furnace annealing. It is conclcuded that the growth mechanism of TiSi_2 is the same for the furnace annealing and the rapid thermal annealing.

STS 410 스테인레스강의 피로균열전파특성에 미치는 온도, 주파수 및 응력비의 영향

김현수,김현철,임병수 成均館大學校 科學技術硏究所 1994 論文集 Vol.45 No.1

The effects of temperature, stress ratio and frequency on the fatigue crack propagation have been investigated using STS 410 Stainless Steel. The temperatures employed were room temperature(27℃), 300℃ and 500℃. The stress ratios were 0.1 and 0.3 and the frequencies were 20 and 30Hz. Some of the conclusions obtained are as follows. (1) As the temperature increased, da/dN became greater, however, with the greater stress ratio, this tendency became smaller. (2) The change of frequency to a higher value at a given temperature had little effect on da/ dN. (3) The increase of stress ratio increased da/ dN, however, this effect became smaller at higher temperature.

SM45C강의 Tempering 온도 변화에 따른 상온 및 300℃에서의 피로균열전파특성

장천수,김현철,임병수 成均館大學校 科學技術硏究所 1993 論文集 Vol.44 No.2

The effect of micros tructural and tempering temperature change on ΔK_th has been investigated at room temperature and 300℃ For the experiments, using SM4OC steel, specimens of different grain sizes, spacings between ΔK_th particles and tempering temperatures were prepared. Some of the conclusions obtained are as follows ; 1. ΔK_th values were greater at 300℃ when compared with those at room temperature and the crack growth rate decreased as test temperature increased. 2. ΔK_th was observed to increase with tempering temperature. However, ΔK_th value of 450℃ tempered specimen was very low, which is believed to be the result of Tempered Martensite Embrittlement(T.M.E.).

복숭아 단근처리가 화아분화와 과실품질에 미치는 영향

김병삼,임경호,나양기,김희곤,김월수 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-

This study was carried out to investigate the effects of root pruning methods for tree vigor stability and flower bud differentiation of 'Sunaga Wase' peach. The treatment was one side 10㎝, 20㎝ and both sides 10㎝, 20㎝ depth under canopy in after summer pruning. Among the treatment, canopy volume was 0.26㎥ lower than non-treatment and flower bud differentiation and Fruit yield increased 18.8%, 9% on both sides root pruning 20㎝ depth, therefore suitability root pruning method of density peach tree was both sides root pruning 20㎝ depth.

P92강의 고온 특성

원성준,임병수 成均館大學校 科學技術硏究所 2001 論文集 Vol.52 No.2

In order to obtain higher efficiency and to reduce the amount of CO_2 exhausting from high temperature components, operating temperature and pressure have been raised recently. Such effort required the development of new high temperature materials, which have better high temperature properties. As the result, P92 steel is developed as a new high temperature piping material. In this study, the tensile properties and the fatigue crack growth rates of P92 steel were obtained at 600℃, 650℃ and 700℃ and the effects of temperature on high temperature characteristics were investigated using Base metal(As received), Base metal(As PWHT) and Weld metal.

STS 316L의 고온 피로균열에 미치는 인장유지시간의 효과

김문진,임병수 成均館大學校 科學技術硏究所 2000 論文集 Vol.51 No.1

The heat resistant material, during service may experience static loading, cyclic loading, or a combination of two. An experimental study of crack growth behavior of STS 316L austenitic stainless steel under fatigue and creep-fatigue loading conditions was carried out on compact tension specimens at various tensile hold times. In the crack growth experiments under hold time loading conditions, tensile hold times were ranged from 5 seconds to 100 seconds and its behavior was characterized using the ΔK parameter. The crack growth rates generally increased with increasing hold times. However, in this material, the trend of crack growth rates decreased with increasing hold times for short hold time range relatively. Their is attributed to a decline in the cyclic crack growth rate as a result of blunting at the crack tip by creep deformation.

고온에서의 P92강 용접부의 피로균열 성장거동

김범준,임병수 成均館大學校 科學技術硏究所 2002 論文集 Vol.53 No.1

To meet the demand for higher efficiency of power plant, high strength and heat resisting steels have been developed to improve the fatigue crack resisting properties under high steam pressure and temperature condition in power plants. As the result, P92 steel which has tempered martensitic 9% Cr and which is strengthened by replacing Mo with W, can be used for piping material that is critical in fossil power plant. Since the pipes are jointed by welding, the fatigue property, strength and life of weldment at high temperature is very important. In this study, the effect of high temperature on fatigue crack growth behavior in weld metal, HAZ(Heat Affected Zone) and base metal of P92 steel were investigated. Fatigue test was conducted under sinusodial waveform with constant load ratio(R=0.1) and frequency(f=20㎐) using CT specimens. Test temperatures were 600Δ℃. 650℃ and 700℃ and fatigue crack growth rates were characterized by the ΔK parameter at each test temperature.