본 연구는 한우에 있어서 다배란처리에 의한 체내 정상수정란의 생산효율을 극대화하기 위하여 PEG에 용해한 FSH의 1회 피하주사 방법이 현재 사용하고 있는 1일 2회 4일간 근육 주사방법을 대체할 수 있는지를 결정하기 위하여 실시하였다. 연구결과 다회 근육주사 방법과 비교하여 1회 피하주사 방법이 황체수, 총 회수란수 및 이식가능 수정란수에 있어서 현저히 증가 (P〈0.05)하였다. 따라서 한우에 있어서 PEG에 용해시킨 Folltropin-V의 1회

This paper provides Shear Performance Evaluation of Squat Shear Wall on Aspect Ratio of Slit. The main variables of paper were vertical slit and slit length. Slit height analysis results by lengthening the slit height was reduced according to the strength and stiffness, the maximum displacement was increased.

In this study is experiment result of reinforced concrete squat shear walls with deformation capacity and structural strengthening performance. In order to evaluate the seismic performance of squat shear walls, slits with opening was used as a variables. The experimental results show that ductility capacity of reinforced concrete squat shear wall with slits is superior compared to normal reinforced concrete squat shear wall

This study is performed to analytic evaluate of precast infill wall with vertical slit. As a result, CON-SS specimen shows more ductile behavior than CON-N specimen. Analytical results are compared with experimental results.

This experimental study examines the test results on the flexural behavior of strain-hardening cement composite (SHCC) with two types of Shrinkage Reducing Admixture (SRA). An influence of SRA on the flexural behaviors of SHCC mixes was observed.

This study is to evaluate structural strengthening performance of lightly reinforced concrete frame retrofitted with infill wall experimentally. In order to evaluate the performance concrete and SFRC infill walls. The weariable is presence of fiber and the wall panel is 1/3 scale models. The result of this study, the SFRC wall specimen, the maximum load and displacement go increase than concrete wall.

This experimental study evaluates of seismic performance on strain-hardening cement-based composite (SHCC). The objective of this study is to evaluate of cross-sectional reduction (1400×800×70 and 1120×520×40㎜) and design compressive strength level (45 and 50 MPa). The experimental results as cross-sectional reduction, peak loads are not significantly different. but energy area is decrease.

This study is performed to analytic evaluate of two side constrained precast infill wall with SHCC. As a result, SHCC-E specimen shows more ductile behavior than SHCC-V specimen. Analytical results are compared with experimental results.

This paper experimentally evaluates effects of fiber ratio of the seismic performance of infill walls. Variable of study was a concrete and fiber ratio (PVA1.3+PE0.2 and PVA0.75+PE0.75). The experimental investigation consisted of cyclic loading tests on 1/3-scale models of infill walls. The experimental results show that SHCC specimens was more ductile behavior.

건축물의 단열은 효율적인 에너지 사용을 위한 필수적인 기술이다. 중단열 콘크리트 외벽 시스템은 내/외측에 두 개의 콘크리트 벽체와 중앙부 단열재로 구성되어, 단열성능과 구조성능을 동시에 만족시킬 수 있는 시스템이다. 중단열 콘크리트 외벽 시스템을 구조체에 적용하기 위해서는 콘크리트와 단열재 부착면의 전단내력에 대한 검증이 필연적으로 요구된다. 본 연구는 파형 FRP 전단연결재로 보강한 중단열 콘크리트 외벽 시스템의 전단연결재의 매립깊이, Pitch, 폭에 따른 전단내력을 평가하기 위하여 실시되었다. 실험결과 동일단면적에서 Pitch가 넓은 경우 전단내력이 소폭으로 증가하는 결과를 보였다. 매립깊이가 깊을수록 전단내력을 증가하였고, 폭 12mm 와 18mm의 경우 각 각 35, 40mm 이상의 매립깊이가 필요할 것으로 판단된다.

The mineralogy and chemical composition of reddish to brownish yellow residual soils, so called "Hwangto" have been examined according to representative host rocks. The result of the study indicates that Hwangto consists of 40-80% clay minerals and various minerals such as quartz, feldspar, hornblende, goethite, and gibbsite. Clay minerals include kaolinite, halloysite, illite, hydroxy interlayered vermiculite (HIV), mica/vermiculite interstratifield mineral and chlorite. The mineralogical constituents and contents of Hwangto were different depending on the types of host rocks. Moreover, the Jurassic granitic rocks contain relatively more kaolin minerals, whereas the Cretaceous granitic rocks contain more HIV and illite. In addition, reddish Hwangto contains relatively more kaolinite and HIV, and yellowish Hwangto contains more illite and halloysite. It is suggested that feldspars and micas of host rocks were chemically weathered into illite, halloysite, illite/vermiculite interstratified minerals, and HIV, and finally into kaolinite. Compared with their host rocks, the major chemical compositions of Hwangto tend to contain more Al2O3, Fe2O3, H2O in amount and less Ca, Mg, and Na. Hwangto contains relatively high amount of trace elements, P, S, Zr, Sr, Ba, Rb, and Ce including considerable amount of Li, V, Cr, Zn, Co, Ni, Cu, Y, Nb, La, Nd, Pb, Th in excess of 10 ppm. Relatively high amount of most trace elements were detected in the Hwangto. The major and minor chemical compositions of the Hwangto were different depending on the types of host rocks. However, their difference was in the similar range compared with the compositions of host rocks.