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양용수 ( Yongsu Yang ),임한규 ( Han Kyu Lim ),이경훈 ( Kyounghoon Lee ),이동길 ( Dong Gil Lee ),신형호 ( Hyeong Ho Shin ) 한국어업기술학회 2015 수산해양기술연구 Vol.51 No.4
This study aims to estimate the Green-House-Gas emissions from domestic farmed flounder in the southern sea and Jeju-Do, where is mainly produced, by the assessment of energy consumptions and GHG emissions from domestic fish farms for establishing reduce standards of greenhouse gas from a sustainable perspective. It needs to analyze such GHG emission components as feed, electricity, fuel, fixed capital, fish respiration, and liquid oxygen in two locations by 4 stage running water type farm size of small, small and medium, large and medium, large scale. The result showed that the mean GHG emissions were 36.83 kg·CO2/year in the southern sea and 24.33 kg·CO2/year in Jeju-Do, respectively, in the stage of production per fish 1kg at 2 locations and farm size from domestic farmed flounders, and it will give to be useful for policy, planning, and regulation of aquaculture development with establishing GHG reduction standards.
소형 가스사이클론 집진장치를 이용한 PM 전처리 시스템의 유동 가시화
양용수 ( Yongsu Yang ),이경훈 ( Kyounghoon Lee ),조현정 ( Hyeonjeong Jo ) 한국어업기술학회 2016 수산해양기술연구 Vol.52 No.3
This study is aimed to design the mechanical gascyclone precipitator with an outstanding collection efficiency as one of ways to reduce exhaust gas of small-scale vessels. It estimated fine particles generated from diesel engines which has become one of the biggest environmental issues currently. Specifically, it quantitatively analyzed the flowing process from the cyclone gas exit; a duct via part to the collecting part of Cylindrical lower using DPIV (Digital Particle Image Velocimetry). Since the gas inlet height part became wider the previous theoretical dimensions, internal fluid characteristics of cyclone where the speed of internal swirl had been slow were investigated by temporary streamline of fine particles at 14-20 ㎛. The results showed that collecting efficiency was three times higher than the conical type utilized previously. In addition, this study supplemented imprecision problems from the previous theoretical equation and CFD interpretation with an experimental method. It also provided a basic data to design the cyclone precipitator by size of diesel engines for vessels.
양용수 ( Yongsu Yang ),이경훈 ( Kyounghoon Lee ),배재현 ( Jaehyun Bae ),김성훈 ( Seonghun Kim ),박성욱 ( Seongwook Park ),박태일 ( Taeil Park ),구자선 ( Jasun Koo ) 한국수산해양기술학회 2015 수산해양기술연구 Vol.51 No.3
Fish exportation using airplanes incurs sizable logistics costs (12,000KRW/kg), according for more than 45% out of the total export cost. Thus, it is unreasonable to quantitatively expand fish exportation by means of air transport. In addition, cases of failing to deliver fish at the right time to the right place occurs frequently due to the limited cargo capacity and insufficient cargo space of airplanes, especially during the peak season. Therefor, a technology that not only minimizes the logistics costs but also transports fish freshly and safely, in the case of long distance exportation to countries such as the United States and Taiwan, should be developed. In this study, a live fish container control system for long distance transportation was designed and implemented. Live flatfish (2,000kg) were selected as the target fish, were transported to the United States to analyze and verify the performance of the a live fish container control system and transportation ability.
3차원 패턴 레이저를 이용한 유영어류의 형태 및 크기 측정
양용수 ( Yongsu Yang ),이경훈 ( Kyounghoon Lee ),편용범 ( Yongbeom Pyeon ),윤은아 ( Eun A Yoon ),이동길 ( Dong Gil Lee ),조현수 ( Hyun Su Jo ) 한국어업기술학회 2016 수산해양기술연구 Vol.52 No.2
This study aims to estimate the species, size and shape of fish using a non-contact 3 dimensional pattern laser so that this preliminary test was carried out to understand the structural feature and length of goldfish according to water turbidity and depth in the aquacultural tank. 3-D pattern laser could clearly detect its morphological shape except the caudal fin due to soft tissue. Since the sensing strength of line laser light according to depth has sufficient power, it is possible to measure its depth and structural feature in the detected range. The result showed that the measured error of individual`s fork length was less than ±1% in the water using 3-D pattern laser, when compared with the measured value in the air.
?雨星(Yang, Yuxing),?容洙(Han, Yongsu) 동아인문학회 2021 동아인문학 Vol.54 No.-
Many new words have appeared in modern daily life and the Internet, especially the eye shadow color words. These color words have distinctive features, novel semantics, and conform to the characteristics of the product. For example, 牛油果绿,豆沙色, etc. Therefore, it is very necessary to study the semantics of the Internet eye shadow color words and analyze the semantic composition and semantic characteristics of these color words. At the same time, attention should be paid to the background reasons for these color words, their usage status and usage problems. This article first selects and analyzes the color words to be studied. Secondly, we read a lot of related color word research articles, and then started to study the Internet eye shadow color words on these basis. In the research process, forms are usually used to show the meaning of color words, as well as the structure and analysis of color words. By studying these color words, we found that in the semantic composition of Internet eye shadow color words, noun meaning + color words meaning occupies an important position; in the semantic characteristics of Internet eye shadow color words, in addition to strong ambiguity meaning, it also has Rhetoric meaning, such as image meaning, associative meaning, etc. Through the research on the color words of cosmetic products in this article, it is hoped that more scholars will study the application of these color words in other industries.
Kim, Se-Yang,Kim, Jung Hwa,Lee, Sungwoo,Kwak, Jinsung,Jo, Yongsu,Yoon, Euijoon,Lee, Gun-Do,Lee, Zonghoon,Kwon, Soon-Yong The Royal Society of Chemistry 2018 Nanoscale Vol.10 No.40
<P>The recent emergence of vertically stacked van der Waals (vdW) heterostructures provides new opportunities for these materials to be employed in a wide range of novel applications. Understanding the interlayer coupling in the stacking geometries of the heterostructures and its effect on the resultant material properties is particularly important for obtaining materials with desirable properties. Here, we report that the atomic bonding between stacked layers and thereby the interlayer properties of the vdW heterostructures can be well tuned by the substrate surface defects using WS2 flakes directly grown on graphene. We show that the defects of graphene have no significant effect on the crystal structure or the quality of the grown WS2 flakes; however, they have a strong influence on the interlayer interactions between stacked layers, thus affecting the layer deformability, thermal stability, and physical and electrical properties. Our experimental and computational investigations also reveal that WS2 flakes grown on graphene defects form covalent bonds with the underlying graphene <I>via</I> W atomic bridges (<I>i.e.</I>, formation of larger overlapping hybrid orbitals), enabling these flakes to exhibit different intrinsic properties, such as higher conductivity and improved contact characteristics than heterostructures that have vdW interactions with graphene. This result emphasizes the importance of understanding the interlayer coupling in the stacking geometries and its correlation effect for designing desirable properties.</P>