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Effects of bentonite Bgp35b‐p on the gut microbiota of mice fed a high‐fat diet
Lee, Eun‐,Sook,Song, Eun‐,Ji,Lee, So‐,Young,Park, So‐,Lim,Kim, Daeyoung,Kim, Daniel,Kim, Jae‐,Hwan,Lim, Seong‐,Il,Nam, Young‐,Do John Wiley & Sons 2018 Journal of the Science of Food and Agriculture Vol.98 No.11
<P>CONCLUSIONBgp35b-p induced compositional changes in intestinal microbiota, which can be considered as a prebiotic effect, thus suggesting that bentonite may be a potential prebiotic functional supplement. (c) 2018 Society of Chemical Industry</P>
Energy Efficient Hybrid Relay Transmission Scheme for Multiple Hop Mobile Networks
Daeyoung Lee,Jong-Moon Chung,Seungjun Choi 대한전자공학회 2010 ICEIC:International Conference on Electronics, Inf Vol.1 No.1
In this paper, we investigate the energy consumption of mobile multi-hop relaying systems in downlink transmission with and without relay station (RS) support. First we analyze the required transmission power of a base station (BS) in single-hop direct communication and then analyze the required power of a RS in a two-hop relaying topology, where for both cases, the constraint that the end-to-end data rate must be guaranteed has been applied in the derivations. Furthermore, an optimal hybrid RS selection scheme is proposed in this paper, which can determine if relying should be used or not, and if relaying is used then which RS will result in the best performance. The experimental results demonstrate that in terms of energy consumption performance (when applicable) the proposed hybrid mode, which uses both direct transmission and a two-hop relay transmission, out performs the one-hop direct transmission scheme.
Lee, Myoung-Su,Kim, Kyung Jin,Kim, Daeyoung,Lee, Kyung-Eun,Hwang, Jae-Kwan Pharmaceutical Society of Japan 2011 BIOLOGICAL & PHARMACEUTICAL BULLETIN Vol.34 No.10
<P>Hepatic lipid accumulation is a major risk factor for dyslipidemia, nonalcoholic fatty liver disease, and insulin resistance. The present study was conducted to evaluate hypolipidemic effects of <I>meso</I>-dihydroguaiaretic acid (MDA), anti-oxidative and anti-inflammatory compound isolated from the <I>Myristica fragrans</I> H<SMALL>OUTT</SMALL>., by oil red O staining, reverse transcription-polymerase chain reaction (RT-PCR), and Western blot. MDA significantly inhibited insulin-induced hepatic lipid accumulation in a dose-dependent manner. The lipid-lowering effect of MDA was accompanied by increased expression of proteins involved in fatty acid oxidation and decreased expression of lipid synthetic proteins. In addition, MDA activated AMP-activated protein kinase (AMPK) as determined by phosphorylation of acetyl-CoA carboxylase (ACC), a downstream target of AMPK. The effects of MDA on lipogenic protein expression were suppressed by pretreatment with compound C, an AMPK inhibitor. Taken together, these findings show that MDA inhibits insulin-induced lipid accumulation in human HepG2 cells by suppressing expression of lipogenic proteins through AMPK signaling, suggesting a potent lipid-lowering agent.</P>
지오그리드 보강 Stone Column의 장·단기 지지력 특성 : 유한요소해석을 통한 고찰
이대영(Daeyoung Lee),김선빈(Sunbin Kim),송아란(Ahran Song),유충식(Chungsik Yoo) 한국토목섬유학회 2006 한국토목섬유학회 학술발표회 Vol.2006 No.4
The stone column method is widely used in Europe as an alternative to conventional pile foundations. Several benefits of using the stone column method include sound performance, low cost, expediency of construction, and liquiefaction resistance, among others. Recently, geosynthetic-encased stone column approach has been developed to improve its' load carrying capacity through increasing confinement effect. Although such a concept has successfully applied in practice, fundamentals of the method have not been fully explored. This paper presents the results of an investigation on the loading carriying capacity of geogrid-encased stone column using a series of 2D finite element analyses. The results of the analyses indicated improved short-and long-term carrying capacity of the geogrid-encased stone column method over the conventional strone column method with no encasing.
김대영(Daeyoung Kim),이성열(Sungyeol Lee),이혜영(Haeyoung Lee) 한국컴퓨터그래픽스학회 2008 컴퓨터그래픽스학회논문지 Vol.14 No.1
모바일 시스템은 메모리, CPU 등의 자원이 기존 데스크탑 시스템 보다 상대적으로 많이 부족하고 정수형 연산처리만을 사용해야 하는 제약이 있다. 본 논문에서는 모바일 시스템의 특성에 적합한 새로운 모바일 3D 연결데이터 압축 기법을 소개 하고자 한다. 연결 데이터 압축 시 옥트리 구조와 메쉬 삼각화 특성을 활용하여 연결되는 점간의 거리에 기초한 새로운 압축 방법을 개발하였다. 또한, 압축 및 해제 시에 정수형 연산만을 사용하고 동적 메모리 할당을 최소화하였다. 실제 핸드폰에서 실시간 압축 해제된 3D 메쉬 테스트 자료도 소개하여 본 알고리즘의 실용성을 높이고자 한다. Mobile systems have relatively limited resources such as low memory, slow CPU, or low power comparing to desktop systems. In this paper, we present a new 3D mesh connectivity coding algorithm especially optimized for mobile systems(i.e., mobile phones). By using adaptive octree data structure for vertex positions, a new distance-based connectivity coding is proposed. Our algorithm uses fixed point arithmetic and minimizes dynamic memory allocation, appropriate for mobile systems. We also demonstrate test data to show the utility of our mobile 3D mesh codec.
게임 이용시간과 개인 내적 요인 그리고 게임의 폭력성 유무가 청소년의 도덕성에 미치는 영향
이승제(Lee, Seungje),이대영(Lee, Daeyoung),정의준(Jeong, Euijun) 한국게임학회 2015 한국게임학회 논문지 Vol.15 No.6
본 연구는 폭력적 게임 이용이 청소년 도덕성에 악영향을 미칠 것이라는 사회적인 우려가 사실인지 검증하기 위해 실시되었다. 이를 위해 자기통제, 자존감, 공격성과 같은 개인 내적 요인들과 함께 폭력적 게임 유무에 따른 청소년들의 게임 이용시간을 측정하고 이를 바탕으로 분석을 실시하였다. 분석 결과 심리적 요인인 자존감과 자기통제는 도덕성과 정적인 관계를 보였지만 공격성은 도덕성과 부적 관계를 보였다. 반면 폭력성, 비폭력성 여부와 무관하게 게임 이용 시간은 도덕성과 관계가 없는 것으로 나타났다. 해당 연구는 기존의 통념과 다르게 게임 이용이 청소년의 도덕적 해이와 무관하다는 사실과 함께 게임이 단순히 폭력적인 성향을 띤다고 해서 도덕성에 부정적인 영향이 발생하는 것이 아님을 밝혔다는 점에서 의의가 있다. This study started for the verification of the worry in the relationship within violent game use and youth moral. The survey was conducted and analyze some personal factor: self control, self esteem, aggression and game time. Self control and self esteem show positive relationship with moral, but aggression shows negative relationship. The other side, game use time doesn't show any relationship with moral whether the game is aggressive or not. It is significant for the game has no relations about a laxity of moral fiber of youth and the aggression of the game doesn't show any negative influence on moral.