• Proceedings of the Korean Society of Crop Science Conference
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• 1981.10a
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• pp.10-10
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• 1981

• Proceedings of the Korean Society of Crop Science Conference
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• 1981.10a
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• pp.9-9
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• 1981

• The Science & Technology
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• s.471
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• pp.102-103
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• 2008

• KOREAN POULTRY JOURNAL
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• v.28 no.9 s.323
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• pp.144-151
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• 1996

밀과 같은 곡류를 기본으로 하는 사료내에 질란아제(Xylanase)효소의 첨가는 사료효율을 향상시킨다. 어떤 종류의 성장촉진제와 질란아제 효소와의 결합된 첨가는 실행에 있어서 누가적(累加的)인 효과를 보여주는 실험이 증명됐다.

• Agrochemical news magazine
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• v.22 no.9 s.172
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• pp.6-9
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• 2001

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.257-261
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• 2008

In this paper, intuitive interactions compatible with various software and replaceable with the conventional mouse function are proposed for camera-tracked laser pointer system. For this purpose, this paper designs the motion based interaction using acceleration information from a new laser pointer with 3-axes accelerometer and shows its usability.

• Proceedings of the Korea Concrete Institute Conference
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• 2008.11a
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• pp.25-28
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• 2008

Generally, reinforced concrete structures exposed to the outside temperature are affected by freezing and thawing process during winter and early spring. These freezing and thawing process can lead to the reduction in durability of concrete as cracking or surface spalling. This paper is to study the hysteretic behavior of RC beams exposed to freezing and thawing under cyclic loadings. To compare the difference in hysteretic behavior of RC Beams, limited tests were conducted under different types of damage and freezing and thawing cycles. For this purpose, six specimens were tested. It is thought that experimental results will be used as basic data to evaluate hysteretic behavior of RC beams exposed to freezing and thawing.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.2 no.3
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• pp.15-22
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• 1982

This paper presents analytic bending moment solution and resonance diagrams for a uniform beam of infinite length subjected to anaxial force and moving transverse load. Solutions are obtained that are time invariant in a coordinate system moving with the load velocity. The supporting foundation includes damping effects. The influences of the axial force, damping coefficient and load velocity on the beam response are studied. The limiting case of no damping and critial damping are also investigated. The profiles of the mement of the beam is shown graphically for several values of the load speed, the axial force and damping parameters.

• Journal of Korean Society of Steel Construction
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• v.20 no.1
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• pp.175-181
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• 2008

Finite element buckling analyses of the monosymmetric I-beams subjected to t ransverse loading applied at different heights with respect to the mid-height of the cross section were conducted. Transverse loads consisting of a mid-span point load and a uniformly distributed load were considered in the investigation. The method suggested in the SRC Guide was compared with the finite element method (FEM) results. This paper presents a more accurate moment gradient correction factor for monosymetric I-beams considering the load height effect. The applicability of this new design method is limited to monosymmetric I-beams in which the degree of monosymetry, ${\rho}$, is from 0.1 to 0.9.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.4A
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• pp.299-305
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• 2009

In this study, in order to research the causes lead to fatigue crack in the coped stringer of a steel railway bridge, we take the steel railway bridge which actually occurs fatigue crack as a research object and manufacture the full size of crossbeam-stringer and floor system model to perform the experimental test. The results indicates that, the fatigue crack in the top of coped area of stringers is caused by the reciprocal action of the in plane stress in the tip of coped area of web by the negative moment occurred in the end of the stringers. While the fatigue crack in the bottom of coped area of stringers is due to the plane stress caused by the out-plane deformation relative to the bottom of coped area of web of the fixed end in the stringers.