古代開封水環境變化考察

程遂營 중국사학회 2006 中國史硏究 Vol.41 No.-

Experience of university students participating in low-salt diet campaign

Sui Kim(김수이),Sangjun Woo(우상준),Younghae Chung(정영해) 성인간호학회 2017 성인간호학회 학술대회 Vol.2017 No.5

Health Promoting Properties of Protein Hydrolysates Produced from Oil Palm (Elaeis guineensis) Kernel

Sui Kiat Chang,Hiroshi Hamajima,Amin Ismail,Teruyoshi Yanagita,Norhaizan Mohd. Esa,Mohamad Taufik Hidayat Baharuldin 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.4

This study aimed to determine the lipid-loweringproperties, antioxidant capacity (AC) and angiotensin-Iconverting enzyme (ACE)-inhibitory activity of oil palmkernel protein hydrolysates (OPKHs) that were producedusing protease and pepsin-pancreatin hydrolysis. Theeffects of the OPKHs on apolipoprotein B (apoB) secretionwas assessed using HepG2 cells as a model and the AC ofthe OPKHs was determined based on ABTS radicalscavenging activity and ferric reducing antioxidant power(FRAP). Both protease and pepsin-pancreatin hydrolysatesreduced apoB secretion significantly (p<0.05). The OPKHsscavenged ABTS radicals effectively and demonstrated ahigh reducing power even at a low concentration (1 mg/mL). The AC of the OPKHs was significantly correlatedwith the OPKHs protein content. However, the OPKHsdemonstrated very low ACE-inhibitory activity. The pepsinpancreatinhydrolysate demonstrated significant lipidloweringproperties, favourable AC and ACE inhibitoryactivity in compared to protease hydrolysate. Therefore,OPKH demonstrate the potential as a nutraceutical forfunctional foods.

Au-assisted fabrication of nano-holes on c-plane sapphire via thermal treatment guided by Au nanoparticles as catalysts

Sui, M.,Pandey, P.,Li, M.Y.,Zhang, Q.,Kunwar, S.,Lee, J. New York] ; North-Holland 2017 APPLIED SURFACE SCIENCE - Vol.393 No.-

Nanoscale patterning of sapphires is a challenging task due to the high mechanical strength, chemical stability as well as thermal durability. In this paper, we demonstrate a gold droplet assisted approach of nano-hole fabrication on c-plane sapphire via a thermal treatment. Uniformly distributed nano-holes are fabricated on the sapphire surface guided by dome shaped Au nanoparticles (NPs) as catalysts and the patterning process is discussed based on the disequilibrium of vapor, liquid, solid interface energies at the Au NP/sapphire interface induced by the Au evaporation at high temperature. Followed by the re-equilibration of interface energy, transport of alumina from the beneath of NPs to the sapphire surface can occur along the NP/sapphire interface resulting in the formation of nano-holes. The fabrication of nano-holes using Au NPs as catalysts is a flexible, economical and convenient approach and can find applications in various optoelectronics.

Temperature-Dependent Structural and Transport Properties of Liquid Transition Metals

Sui Yang,Xuping Su,Jianhua Wang,Nai-Yong Tang 대한금속·재료학회 2010 METALS AND MATERIALS International Vol.16 No.6

The evolution of the atomic structures and diffusivity of liquid transition metals with increasing temperature has been studied here using molecular dynamics. An analysis of Honeycutt and Andersen (HA) Indices indicates that relatively low order atomic clusters of rhombohedra-related structures increase with an increase in temperature. The results illustrate that the distortion in the local structural order with a predominant rhombohedra character enhances the diffusivity in liquid metals. The excess entropy approximated by the two-body contribution increases with the distortion of the local structural order traced by the HA Indices. The relationship between the excess entropy and the reduced diffusion coefficient supports the universal scaling law proposed by M. Dzugutov. The calculated diffusivities were compared with predictions of four diffusion models. The temperature dependence of the diffusivity cannot be described by the Arrhenius Law, the moving oscillator model or the free volume model but rather by the density fluctuation model with the square proportionality of temperature.

The Influence of the Combination of Coherent and Incoherent Tunneling on the Tunneling Magnetoresistance in a Ferromagnet-Metal-Insulator-Ferromagnet Tunneling Junction

Sui-Pin Chen 한국자기학회 2010 한국자기학회 학술연구발표회 논문개요집 Vol.2010 No.12

Fabrication and determination of growth regimes of various Pd NPs based on the control of deposition amount and temperature on <i>c</i>-plane GaN

Sui, Mao,Kunwar, Sundar,Pandey, Puran,Zhang, Quanzhen,Li, Ming-Yu,Lee, Jihoon Published for the Materials Research Society by th 2017 Journal of materials research Vol.32 No.18

<▼1><B>Abstract</B><P/></▼1><▼2><P>Palladium (Pd) nanostructures have been actively adapted for various applications and their properties and applicability closely depend on their shape, size, and density. In this paper, the evolution of self-assembled Pd nanostructures on the hexagonal <I>c</I>-plane GaN is presented by the systematical control of Pd deposition amount (DA) at distinctive temperatures. Pd nanostructures of various configurations, sizes, and densities are demonstrated based on the solid-state dewetting of Pd thin films and a clear distinction in the growth regimes is observed. Three growth regimes are clearly observed depending on the variation of DA, i.e., (i) the agglomeration of Pd nanoparticles, (ii) the coalescence of wiggly Pd nanostructures, and finally (iii) the growth of nanovoids and layers. Owing to the temperature-dependent dewetting process, the growth regimes are markedly shifted, resulting in the distinctive Pd nanostructures within the identical DA range. The results are discussed in conjunction with the surface diffusion, Volmer-Weber and coalescence growth model, and surface/interface energy minimization mechanism. In addition, the evolution of optical properties, emission band, and lattice properties are probed by reflectance, photoluminescence, and Raman spectroscopy, which exhibit varying spectral intensity and peak positions according to the surface morphology of Pd nanostructures.</P></▼2>

Risk analysis for the compressed natural gas (CNG) station explosion accident

Sui Yanfei,Luo Yong 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10

With the shortage of the gasoline resource day by day, the adjustment of county"s energy strategy, environment engineering requirement and the continuous progress of the automobile technology, more and more autobiles were designed on the CNC as their fuel and correspondingly CNG station were increased at the same time. But the subsequent accidents such as the leakage of the gas and the fire disaster make the security fo the CNG station become a serious problem which people should pay more and more attention on it. If the gas leaked were not ignited immediately it may construct gas cloud cluster and may expolde when it comes out an open fire. Consequently people in a certain idstance may be wounded by the shockwave and the architectures in the dangerous range will be destroyed. This paper contribute to calculate the dangerous range of the CNG station explosion accident and to formulate the evacuate conditions for pedestrian after the accident.

Analysis of news bigdata on ‘Gather Town’ using the Bigkinds system

Sui Choi(최수이) 한국컴퓨터정보학회 2022 韓國컴퓨터情報學會論文誌 Vol.27 No.3

4차 산업혁명 기술의 발전으로 가상과 현실의 경계가 모호한 디지털 환경 속에서 MZ세대와 메타버스가 가장 큰 주목을 받고 있다. 이러한 MZ세대에 부합되는 교수학습 방식으로 메타버스가 주목받고 있다. 본 연구에서는 에듀테크 관점에서 언론사 뉴스 분석을 통해 메타버스 플랫폼 중의 하나인 게더타운의 활성화 요인을 탐색해 보고자 하였다. 이를 위해 한국언론재단에서 제공하는 빅카인즈 시스템을 이용하여 빅데이터 관점에서 분석해 보았다. 그 결과 COVID-19 팬데믹 이후에 나타날 미래교육에서 ‘게더타운’의 활용도는 크게 증가할 것으로 예상된다. 둘째, 연관어와 워드크라우드 분석에서, ‘비대면’이나 ‘대학’ 그리고 ‘신입생’ 등 교육 관련 용어들의 가중치가 비교적 높게 나타났으며, ‘메타버스’, ‘메타버스 플랫폼’을 포함하여, ‘코로나19’나 ‘아바타’ 등의 용어도 중심적인 위치에 있는 것으로 나타났다. 셋째, 네트워크 분석에서 도출된 주요 용어로는 ‘코로나19, 아바타, 대학생, 진로, 유튜브’ 가 포함되어 있는 것으로 나타났다. 이러한 여건 하에서, 본 연구 결과는 메타버스 플랫폼의 하나인 게더타운의 향후 교육 영역에서의 활용이 보다 활성화 되는데 크게 기여할 것으로 기대된다. Recent years have drawn a great attention to generation MZ and Metaverse, due to 4th industrial revolution and the development of digital environment that blurs the boundary between reality and virtual reality. Generation MZ approaches the information very differently from the existing generations and uses distinguished communication methods. In terms of learning, they have different motivations, types, skills and build relationships differently. Meanwhile, Metaverse is drawing a great attention as a teaching method that fits traits of gen MZ. Thus, the current research aimed to investigate how to increase the use of Metaverse in Educational Technology. Specifically, this research examined the antecedents of popularity of Gather Town, a platform of Metaverse. Big data of news articles have been collected and analyzed using the Bigkinds system provided by Korea Press Foundation. The analysis revealed, first, a rapid increasing trend of media exposure of Gather Town since July 2021. This suggests a greater utilization of Gather Town in the field of education after the COVID-19 pandemic. Second, Word Association Analysis and Word Cloud Analysis showed high weights on education related words such as ‘remote’, ‘university’, and ‘freshman’, while words like ‘Metaverse’, ‘Metaverse platform’, ‘Covid19’, and ‘Avatar’ were also emphasized. Third, Network Analysis extracted ‘COVID19’, ‘Avatar’, ‘University student’, ‘career’, ‘YouTube’ as keywords. The findings also suggest potential value of Gather Town as an educational tool under COVID19 pandemic. Therefore, this research will contribute to the application and utilization of Gather Town in the field of education.

Annealing temperature effect on self-assembled Au droplets on Si (111)

Sui, Mao,Li, Ming-Yu,Kim, Eun-Soo,Lee, Jihoon Springer 2013 NANOSCALE RESEARCH LETTERS Vol.8 No.1

<P>We investigate the effect of annealing temperature on self-assembled Au droplets on Si (111). The annealing temperature is systematically varied while fixing other growth parameters such as deposition amount and annealing duration clearly to observe the annealing temperature effect. Self-assembled Au droplets are fabricated by annealing from 50°C to 850°C with 2-nm Au deposition for 30 s. With increased annealing temperatures, Au droplets show gradually increased height and diameter while the density of droplets progressively decreases. Self-assembled Au droplets with fine uniformity can be fabricated between 550°C and 800°C. While Au droplets become much larger with increased deposition amount, the extended annealing duration only mildly affects droplet size and density. The results are systematically analyzed with cross-sectional line profiles, Fourier filter transform power spectra, height histogram, surface area ratio, and size and density plots. This study can provide an aid point for the fabrication of nanowires on Si (111).</P>