In this paper, the experimental study and finite elements analysis were conducted on homogeneous and dissimilar metals single lap-shear bonded joints to investigate the factor that affect the joint failure load. It was found that factors which have the significant effects on the failure load of the joint was stiffness of the adherends. And from experimental results, it can be confirmed that the failure load increases linearly with overlap length increases. And the failure load of dissimilar metal joints is approximately 1KN(10 ～17%) larger than homogeneous metal joints. In order to confirm this phenomenon, the stress distribution and strain distribution of the specimens were analyzed through the finite element analysis. The difference between homogeneous metals joints and dissimilar metals joints is that stress and strain in adhesive are concentrated at the end of the overlap zone close to aluminium which has lower rigidity than aluminium in case of dissimilar metals joints. From high rigidity of steel, the stress concentration in bonds are decreased and it cause increase of the failure strength at dissimilar metal joints.

본 연구는 국내 강도 범죄자들의 동종 전과 유무에 따라 가해자와 피해자의 배경 특성, 범행 장소, 범행 수법 등에 있어 차이점이 나타나는지를 살펴보고자 하였다. 더불어, 강도 범죄자에게 있어 동종 전과가 있는지를 예측하는 요인들을 알아보고자 하였다. 국내에서 2011년부터 2013년 사이에 기소된 강도 사건 중 기록 조사로 수집된 총 512건을 바탕으로, 가해자가 동종 전과가 있는 186건을 동종 전과가 없는 326건과 비교하여 분석하였다. 그 결과, 우선 동종 전과가 있는 강도 범죄자의 경우 그렇지 않은 범죄자들에 비해 평균 연령이 더 높았으며, 여성을 대상으로 범죄를 저지른 비율이 더 높은 것으로 나타났다. 또한 동종 전과가 있는 강도 범죄자들은 흉기나 결박도구 등을 미리 준비하여 범행을 저지른 비율이 더 높았으며, 주거침입강도의 비율이 더 높았다. 반면, 동종 전과가 없는 강도 범죄자의 경우 주로 자신의 거주지나 그 인근에서 노상강도를 저지른 비율이 더 높은 것으로 나타났다. 마지막으로 본 연구의 한계점과 함께, 강도 범죄 전과가 범행에 미치는 영향 및 강도 범죄자 재범 방지에 대한 시사점에 대해 논의하였다.

In this research, the welding experiment was carried out with both the steel materials (SS400+SS400, SUS304+SUS304) and the different steel materials (SS400+ SUS304), where SS400 is a general structural rolled steel material and SUS304 is a cold strip stainless steel sheet. The average of yield point of a SS400 experimental piece was the most highest point with 2015.54 N/m2. Although welding defects were not found with the naked eye, it was sure that there were some wilding defects because there were no stress against load through experiments. The rate of yield point of experimental piece A, experimental piece B and experimental piece C was respectively 1.7mm, 1.3mm and 2.6mm. The rate of breakdown was respectively 39.77mm, 17.97mm and 2.6mm. So considering price and efficiency with use condition is very important. SS400 and SUS304 will be profited from considering price and mechanical property with use condition.

This study was carried out to produce the antisera for the blood typing in cattle. Blood types of eighty cattle were previously determined by 56 kinds of internationally standardized antisera from Japan. The donorrecipient animal arrangements were determined according to tile previously determined blood types of animals by the computer program SS-l for efficient production of antisera. Six kinds of standard antisera, H,B', 12, C2, Z, U2, were produced by isoimmunirzation and absorption methods.

Background : Panax ginseng Meyer, the king of Oriental medicine is a geophytic perennial shrub. P. ginseng possess long juvenile period which spans for at least 3-years before it could attain reproductive competence. To explore the significance of flowering time genes we isolated, characterized the Flowering Locus T (FT) gene and named as PgFT1 and PgFT2 to understand their role in ginseng floral transition. Methods and Results : By using extensive cloning and bioinformatics analysis we identified two FT homologs from ginseng a. The deduced PgFT sequences has a considerable homology to established FT homologs with the essential amino acids of a florigen function conserved. The tissue specific expression profiling by Real-time qPCR from the juvenile (2-years-old) and adult (4-year-old) ginseng plants have shown a spatial and temporal expression pattern, furthermore PgFT transcripts exhibited photoperiod dependent oscillation as well. Besides, PgFT1 and PgFT2 have shown an age specific expression pattern, in particular the transcripts were concentrated to the roots of P. ginseng. The ectopic expression of PgFT homologs in Arabidopsis thaliana induce precocious flowering by altering several floral pathway integrators, in addition PgFT1 transgenic Arabidopsis seedlings had an increased root length while, the influence of PgFT2 in transgenic seedlings apart from flowering is as yet to be revealed. Conclusion : Based on our results, we alleged the spatial and temporal expression of PgFT homologs could be significant in the flowering time transition of ginseng and their age specific expression pattern suggests the roots of ginseng are influential in determining the reproductive competency. On top of it, results from transgenic studies in Arabidopsis claimed that PgFT1 might involve in the underground organ development. Albeit, their molecular regulation, developmental role and the manipulation of PgFTs in ginseng flowering warranties further investigation.