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Development of the Mobile Web-based user's Experience Analysis System (모바일 웹 기반의 사용자 체험 분석 시스템 개발)

  • Ko, Yong Jae;Kim, Young Chul;Jo, Hyun Gyu;Kim, Hyung Do;Kang, Bong Sok;Kim, Hyung Jin;Park, Ki Seok;Kim, Seong Tae;Lee, Sung Hun
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2011.07a
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    • pp.393-395
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    • 2011
  • 본 논문에서는 모바일 통신 방송 융합분야는 세계 각국이 서로 상이한 표준을 가지고 있어 해외 시장 진출 시 제품 신뢰성 확보를 위한 해외 현지에서의 테스트가 중요시 되어서 국내 기업의 테스트 비용과 개발기간 면에서 경쟁력 확보의 악재로 작용하고 있다. 따라서 모바일 통신 방송의 세게 각 국 표준의 테스트 인프라를 확보하고 이를 활용하는 테스트의 전반적인 시스템을 구축하여 국내 기업의 테스트 비용 절감 및 개발기간 단축과 다양한 서비스 개발이 가능하다.

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Evaluation of Genetic Variation and Phylogenetic Relationship among North Indian Cattle Breeds

  • Sharma, Rekha;Pandey, A.K.;Singh, Y.;Prakash, B.;Mishra, B.P.;Kathiravan, P.;Singh, P.K.;Singh, G.
    • Asian-Australasian Journal of Animal Sciences
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    • v.22 no.1
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    • pp.13-19
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    • 2009
  • In the present study, genetic analyses of diversity and differentiation were performed on four breeds of Indian zebu cattle (Bos indicus). In total, 181 animals belonging to Ponwar, Kherigarh, Gangatiri and Kenkatha breeds were genotyped for 20 cattle specific microsatellite markers. Mean number of alleles observed per locus (MNA) varied between 5.75 (Kenkatha) to 6.05 (Kherigarh). The observed and expected heterozygosity for the breeds varied from 0.48 (Gangatiri) to 0.58 (Kherigarh) and 0.65 (Kenkatha) to 0.70 (Kherigarh), respectively. $F_{IS}$ estimates of all the breeds indicated significant deficit of heterozygotes being 28.8%, 25.9%, 17.7% and 17.7% for Gangatiri, Ponwar, Kherigarh and Kenkatha, respectively. The $F_{ST}$ estimates demonstrated that 10.6% was the average genetic differentiation among the breeds. Nei's genetic distance DA and Cavalli- Sforza and Edwards Chord distance ($D_C$) and the phylogenetic tree constructed from these reflected the close genetic relationship of Gangatiri and Kenkatha, whereas Ponwar appears to be more distant.

Whitening Activities of Ethanol Extract from Polygonum amphibium L. (물여뀌 에탄올 추출물의 미백 효과)

  • Hwang, Buyng Su;Lee, Seung Young;Kang, Chang Hee;Han, Woog;Oh, Young Taek;Yu, Sang Mi;Kim, Min Jin;Kim, Chul Hwan;Eom, Jung Hye;Jeong, Sang Chul;Lee, Wook Jae;Ahn, Young Hee;Jeong, Yong Tae
    • Microbiology and Biotechnology Letters
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    • v.47 no.2
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    • pp.195-200
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    • 2019
  • The purpose of this study was to investigate the melanogenesis inhibiting activity of the ethanol extract from Polygonum amphibium L. Firstly, the n-hexane (Hx), chloroform ($CHCl_3$), ethyl acetate (EA), n-butanol (BuOH), and water (Water) fractions were isolated from the P. amphibium L. ethanol extract. The efficacy of melanogenesis was found to significantly decrease via the EA and BuOH fractions when compared to the control in B16F10 cells. EA particularly showed the lowest melanin content in B16F10 cells when compared to all the other extracts. Concentration-dependent inhibition of melanin synthesis was also observed in the EA fraction at concentrations below $50{\mu}g/ml$, which did not exhibit cytotoxicity in B16F10 cells. Notably, the expression of three key proteins (tyrosinase, tyrosinase-related protein-1 (TRP-1), and TRP-2), which are involved in melanogenesis, were significantly decreased via the EA fraction. EA also inhibited body pigmentation in vivo in a zebrafish model. Overall, we demonstrated melanogenesis suppression using the EA fraction from P. amphibium L., which could be a potential candidate for an antimelanogenesis agent.

Significant Progress in Construction Equipment of Super High-Rise Building

  • Zhang, Kun;Wang, Hui;Wang, Kaiqiang;Cui, Jian;Chen, Bo;Li, Di
    • International Journal of High-Rise Buildings
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    • v.7 no.3
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    • pp.243-253
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    • 2018
  • The construction of rapid developing super high-rise buildings constantly faces great challenges and the innovation of construction equipment is a focus of these challenges. In this paper, three new inventions including the operation platform, tower crane and hoist are put forward around two of the most important issues of super high-rise building construction: vertical transportation and operation environment. Study background, composition of the equipment, working principles and key technologies are introduced in sequence. In the end, the paper summarizes the main problems in the further development of construction equipment.