해양 갑각류 민꽃게(Charybdis japonica) 집단의 형태학적 변이성

허윤성,이복규,허만규,Heo, Youn-Seong,Lee, Bok-Kyu,Huh, Man-Kyu 한국생명과학회 2006 생명과학회지 Vol.16 No.4

In order to determine the morphological variations of the Japanese swimming crab, Charybdis japonica, we conducted morphological analysis of five populations that are relatively abundant in Korea and Japan. Abdominal sternite for individuals of the Tean population showed significantly short when compared to those of other populations. Principal component analysis demonstrated that morphological differentiation was due to differences (A/Q, B/M, D/P, F/O, J/K), and effectively discriminated each others. The first two components accounted for 40.9% and 60.7% of the variation, respectively. The dendrogram showed three distinct groups, Tokyo population, Taean population, and the other populations.

Study of ion beam shaping of an anode-type ion source coupled with a Whenelt mask

허윤성,황윤석,김제하 한국진공학회 2018 Applied Science and Convergence Technology Vol.27 No.4

We fabricated an anode-type ion source driven by a charge repulsion mechanism and investigated its beam shape controlled by a Whenelt mask integrated at the front face of the source. The ion beam shape was observed to vary by changing the geometry of the Whenelt mask. As the angle of inclination of the Whenelt mask was varied from 40 to 60, the etched area at a thin film was reduced from 20 mm to 7.5 mm at the working distance of 286 mm, and the light transmittance through the etched surface was increased from 78% to 80%, respectively. In addition, for the step height difference,  between the inner mask and the outer mask of  = 0, -1 mm, and +1 mm, we observed the ion beam shape was formed to be collimated, diverged, and focused, respectively. The focal length of the focused beam was 269 mm. We approved experimentally a simple way of controlling the electric field of the ion beam by changing the geometry of the Whenelt mask such that the initial direction of the ion beam in the plasma region was manipulated effectively.

여고생의 화장품 안전성 및 유해성분 인식에 따른 기능성화장품 사용실태에 관한 연구

허윤성,김경은 한국미용학회 2022 한국미용학회지 Vol.28 No.4

This study attempted to examine consumers' awareness of the safety of cosmeceuticals and analyze harmful ingredients against high school girls who have recently emerged as a new consumer group in the cosmeceutical market with a goal of providing basic data needed to buy cosmeceuticals by investigating their consumption patterns and satisfaction with the cosmetic products. For this, an online questionnaire survey was performed against a total of 377 high school girls born in 2003-2005 in Seoul and Gyeonggi-do. The collected data were analyzed, using IBM SPSS Statistics 20, and the results found the followings: The respondents' awareness of the safety of cosmetics was neither high nor low while awareness of harmful ingredients was high. Among cosmeceuticals, it was sunscreens acnecare products that they have bought frequently. As their awareness of the safety of cosmetics was higher, they tended to check the effects and efficacies of ingredients. Depending on their skin concerns, they planned and bought the cosmeceuticals they needed by comparing their information. In addition, they have examined cosmetic information through apps and web portals in consideration of the efficacies and effects of cosmeceuticals and their skin type and conditions. Concerning cosmeceutical use patterns by the awareness of harmful ingredients, the perception of the hazard of synthetic color additives, synthetic flavors and mineral oil had an influence on the use of cosmeceuticals. Depending on the awareness of the safety and harmful ingredients of cosmetics, furthermore, the respondents were more satisfied with the cosmeceuticals. Under these circumstances, it is required to provide accurate information about cosmetic ingredients and help consumers have a better awareness of the safety of cosmetics by developing and distributing educational programs on harmful ingredients and decent contents

먹이종류에 따른 동남참게, Eriocheir japonicus(De Haan) 초기유생의 생존율

허윤성,권진수,이복규,김홍권,김병기,최주수,김양우 한국생명과학회 2002 생명과학회지 Vol.12 No.4

동남참게 초기유생에 대한 다양한 먹이를 공급하여 먹이에 따른 어린게까지 소요 일수와 생존율을 수온 22$\pm$1$^{\circ}C$ 및 염분 24$\pm$1% 상태에서 조사한 결과는 다음과 같다. 무투여구에서는 5일만에 조에아 I~2기 상태에서 모두 사멸하였고, 살아있지 않은 먹이인 삶은 계란 난황 건조분말, 삶은 대두 건조분말, 인공배합사료 분말, 삶은 수수 건조분말, 새우 생육세편, 담치 외투막 생육세편를 공급한 실험구에세는 7~9일 까지 생존하였으며 유생의 형태는 조에아 2~3기 상태였다. 식물성 단세포인 C. ellipsoid, S. costatum, 및 C. gracilis를 각각 단독으로 공급하였을 때 각각 10, 18과 19일 까지 생존하였고, 유생의 형태는 조에아 3~5기 상태였고, 동물성 플랑크톤인 Artemia nauplii and rotifer를 공급하였을 때 각각 24일과 25일만에 치게로 변태하였고 이때의 생존율은 각각 43%와 25%이었다. 한편, 조류와 동물성 먹이를 혼합하여 공급하였을 때 단독공급시보다 모든 실험구에서 생존율이 높게 나타났고, 치게까지 도달하였다. 그 중에서 가장 효과가 좋았던 실험구는 규조류인 C. gracilis, Artemia nauplii and rotifer를 혼합공급한 실험구 이었고, 22일만에 치게로 변태하였으며 이때 생존율은 73%였다. The survival of the early larvae of the freshwater crab, E. japonicus, fed on different diets at 22土1$^{\circ}C$ and 24$\pm$1% were studied in the laboratory. The larvae in the control (no feed) lived for 4 days (1~2 zoeal stages), and in the experimental container of non-living foods (egg Powder, soy bean Powder, Pellet Powder, millet Powder, and mussel meat), they were lived for 7~9 days (2~3 zoeal stages), When the larvae fed on phytoplankton (Chlorella ellipsoid., Skeletonema costatum. and Chaetoceros gracilis), they lived for 10, 18, and 19 days(3~5 zoeal stages), and fed on zooplankton (Artemianauplii and rotifer), they were reached to the juvenile stage in 24 and 25 days, respectivily. When the larvae fed on a mixed diets (see table 1). it was more effective than a single food diet, and the most effective diets included Chaetoceros gracilis, Artemia nauplii and rotifera, in which the larvae reached the juvenile stage in 22 days, and the survival was 73%.

결정질 실리콘 태양전지 제조공정 장치

허윤성,Heo, Yun-Seong 한국정보디스플레이학회 2009 인포메이션 디스플레이 Vol.10 No.5

고온초전도체 in-situ ramp-edge 형태의 조셉슨 접합 제작 및 특성

허윤성,김진태,황윤석,이순걸,박광서,김인선,박용기,박종철,Hur, Yun-Sung,Kim, Jin-Tae,Hwang, Yun-Seok,Lee, Sun-Gul,Park, Gwang-Seo,Kim, In-Seon,Park, Yong-Ki,Park, Jong-Chul 한국재료학회 1998 한국재료학회지 Vol.8 No.3

본 연구에서는 금속 칼날 마스크와 펄스형 레이저 증착장치를 이용하여 $YBa_2Cu_3O_{7-\delta}$/$SrTiO_{3}$/$YBa_2Cu_3O_{7-\delta}$ 다층박막 형태의 In-situ SIS ramp dege 형태의 접합을 제작하였으며, 이의 특성을 조사하였다. 접합은 RSJ 형태의 전류-전압 특성ㅇ르 나타내고 있으며, 온도 변화에 따른 접합의 normal resistance는 약 $18 \omega$으로 온도에 무관하게 일정한 값을 나타내었다. 접합형태를 이용하여 감도(transfer function, dV/$d\Phi$)가 약 $22\mu$V/$\Phi_{0}$인 dc-SQUID센서를 제작하였으며, in-situ SIS ramp edge 형태의 접합이 센서로의 응용가능성을 충분히 가지고 있음을 보여 주었다. In this study, we have fabricated in-situ multilayer $YBa_2Cu_3O_{7-\delta}$/$SrTiO_{3}$/$YBa_2Cu_3O_{7-\delta}$ ramp edge type junctions by using a metal mask and pulsed laser deposition method and studied the junction properties. The junctions showed RSJ-like I-V characteristics. The normal state junction resistance R, of $18 \omega$ was nearly constant with temperature. The dc-SQUID sensors fabricated with the junctions show a sensitivity that transfer function dV/$d\Phi$)~$22\mu$V/$\Phi_{0}$, indicating that the in-situ ramp edge type junction is potentially useful for sensor application.

Characteristics of critical pressure for a beam shape of the anode type ion beam source

허윤성,황윤석,김제하 한국진공학회 2018 Applied Science and Convergence Technology Vol.27 No.4

We studied the critical pressure characteristics of an anode type ion beam source driven by both charge repulsion and diffusion mechanism. The critical pressure Pcrit of the diffusion type ion beam source was linearly decreased from 2.5 mTorr to 0.5 mTorr when the gas injection was varied in 3~10 sccm, while the Pcrit of the charge repulsion ion beam source was remained at 3.5 mTorr. At the gas injection of 10 sccm, the range of having normal beam shape in the charge repulsion ion beam source was about 6.4 times wider than that in the diffusion type ion beam source. An impurity of Fe 2p (KE = 776.68 eV) of 12.88 at. % was observed from the glass surface treated with the abnormal beam of the charge repulsion type ion beam source. The body temperature of the diffusion type ion beam source was observed to increase rapidly at the rate of 1.9 °C/min for 30 minutes and to vary slowly at the rate of 0.1 °C/min for 200 minutes for an abnormal beam and normal beam, respectively.

3국 조선(한국)어기초교재 문법항목 비교연구

허윤성(??星) 길림성민족사무위원회 2015 중국조선어문 Vol.199 No.-

본 론문에서는 중국 연변대학, 조선 김형직사범대학, 한국 연세대학의 조선(한국)어기초교재 문법항목 조사와 어미에 대한 비교분석을 통하여 상호 공유되는 문법항목과 변별되는 문법항목에 대해 헤아려보고 그 특점을 분석하며 3국 조선(한국)어기초교재에 공동으로 기술된 문법항목과 비교분석결과에 근거하여 조선(한국)어기초교재 문법항목 선정기준을 정하고 핵심문법항목 개선방안을 제시하였다. 本文通??中?延?大?、朝?金亨程?范大?、??延世大?的基?????材?法?一助?和?尾的比?, 考察和分析了相互共有的?法?和不同?法?以及?的特点。在此基?上, ?考三所?校?材中共同出?的?法?和比?分析?果, 提出了基?????材核心?法?的改?方案。

영유아기 부모의 부부갈등이 초기 청소년기 자녀의 미디어기기 중독에 미치는 종단적 영향: 부모의 온정적 양육행동과 아동의 내재화 문제의 이중매개효과

허윤성,최지은,박소희,한지수,이민지,정윤교,김현경 육아정책연구소 2022 육아정책연구 Vol.16 No.3

This study examined the longitudinal developmental pathways of children’s media device addiction level in early adolescence (age 11 years). Using data from Panel Study of Korean Children data on 1,994 households (W2-W12), direct effects of interparental conflict (at age 1-4 years) mediating roles of parental warmth (at age 5-6 years) and children’s internalizing problems (at age 9 years). Results of structural equation modeling indicated that interparental conflict in toddlerhood significantly and directly increased the media device addiction level in early adolescence. In addition, interparental conflict in toddlerhood led to a lack of parental warmth and high levels of internalizing problems in children, which consequently increased their media device addiction level in early adolescence. These findings will inform early intervention efforts to prevent media device addiction. 본 연구는 한국아동패널 2~12차 1,994가구를 대상으로 초기 청소년기 미디어기기 중독의 종단적 영향을 분석하였다. 그 결과, 영유아기 때 높은 부부갈등은 초기 청소년기 때 미디어기기 중독을 직접적으로 높이는 것으로 나타났고, 유아기 시기 부모의 부족한 온정적 양육행동과 아동기 자녀의 높은 내재화 문제를 통해 간접적으로도 미디어기기 중독을 높이는 것으로 나타났다. 끝으로 미디어기기 중독 예방을 위한 다각적인 조기 개입의 필요성과 방안에 대해 논의하였다.

산업용 기능성 박막 공정을 위한 이온빔 소스 기술

허윤성 한국진공학회 2014 한국진공학회 학술발표회초록집 Vol.2014 No.8