Nanogenerators: Fully Rollable Transparent Nanogenerators Based on Graphene Electrodes (Adv. Mater. 19/2010)

Choi, Dukhyun,Choi, Min-Yeol,Choi, Won Mook,Shin, Hyeon-Jin,Park, Hyun-Kyu,Seo, Ju-Seok,Park, Jongbong,Yoon, Seon-Mi,Chae, Seung Jin,Lee, Young Hee,Kim, Sang-Woo,Choi, Jae-Young,Lee, Sang Yoon,Kim, Jo WILEY-VCH Verlag 2010 ADVANCED MATERIALS Vol.22 No.19

<B>Graphic Abstract</B> <P>The cover shows an image of fully rollable transparent nanogenerators synthesized using chemical vapor deposition grown large-scale graphene sheets as transparent electrodes and piezoelectric ZnO nanorod arrays. Sang-Woo Kim, Jae-Young Choi, and co-workers report on p. 2187 the electrical and structural stability of the nanogenerators, with excellent charge scavenging performance under external mechanical loads such as bending and rolling. This study shows that graphene-based nanogenerators are very promising for self-powered rollable transparent device applications. <img src='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content.gif' alt='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content'> </P>

Humic acid가 카드뮴 어독성에 미치는 영향

류지성,정규혁,최필선,이길철,최덕일,최성수,류홍일,박광식 성균관대학교 약학연구소 1998 成均藥硏論文集 Vol.10 No.1

Cadmium, a major aquatic pollutant in many parts of the world, is toxic and readily accumulated in aquatic organisms. It mainly exists in water as complexes with organic ligands such as dissolved organic carbon and this complexation is known to have effects on the aquatic toxicities. In this study, acute toxicity, histology, and bioaccumulation were studied to evaluate effects of humic acid on cadmium toxicity and bioavailability to fish using Oryzias latipes and Cyprinus carpio. 96h-LC50 of cadmium was 6.38 ㎎/L using Oryzias latipes. However, the mortality showed the dose-dependent decrease when humic acid was added to the test solution. When fish were exposed to 5㎎/L of cadmium, histological changes in the exposed organs(caudal fins, gills, kidney, liver, and gut) of Cyprinus carpio were decreased by humic acid, especially in kidney and liver. Bioaccumulation of cadmium also decreased by treatment of humic acid. It seems that the formation of complexes between cadmium and humic acid may decrease bioavailability of cadmium to fish, and thus reduce the toxic effects of cadmium.

Humic acid가 카드뮴 어독성에 미치는 영향

류지성,정규혁,최필선,이길철,최덕일,최성수,류홍일,박광식 한국환경독성학회 1998 환경독성보건학회지 Vol.13 No.1

Cadmium, a major aquatic pollutant in many parts of the world, is toxic and readily accumulated in aquatic organisms. It mainly exists in water as complexes with organic ligands such as dissolved organic carbon and this complexation is known to have effects on the aquatic toxicities. In this study, acute toxicity, histology, and bioaccumulation were studied to evaluate effects of humic acid on cadmium toxicity and bioavailability to fish using Oryzias latipcs and Cypriruts carpio. 96h~LC50 of cadmium was 6.38 mg/L using Oryzias latipes. However, the mortality showed the dose-dependent decrease when humic acid was added to the test solution. When fish were exposed to 5 mg/L of cadmium, histological changes in the exposed organs (caudal fins, gills, kidney, liver, and gut) of Cyprinifs carpio were decreased by humic acid, especially in kidney and liver. Bioaccumulation of cadmium also decreased by treatment of humic acid. It seems that the formation of complexes between cadmium and humic acid may decrease bioavailability of cadmium to fish, and thus reduce the toxic effects of cadmium.

근대기의 경산화파 예운불화 연구

최성규 ( Choi Sung Kyu ) 한국종교문화연구소(종교문화비평학회) 2016 종교문화비평 Vol.30 No.30

예운상규는 경산화파의 화맥 안에서 전승되는 불화의 형식으로 작업에 임했으며 또한 전승시킨 불모(佛母)이다. 19세기 중반부터 전하고 있는 그의 불화는 1930년에까지 이르고 있다. 경산화파는 불모들의 계보 가운데 비교적 화맥이 잘 밝혀져 있고 전해지는 불화의 소재가 어느 정도 파악되어 그 특징을 살펴 볼 수 있다. 조선 후기에는 대부분 사찰 불화의 수요가 그 지방 승려들에 의해 충족되었고 이에 따라서 다양한 승려가 많이 모이는 대사찰 중심으로 배출된 화승들은 자신의 출신 사찰을 중심으로 인근지역 안에서 활동함으로써 지역에 따른 화사(畵師) 집단이 형성되었다. 이와 같은 화사 집단 가운데 서울·경기지역에서 활동한 화사들을 경성화파 또는 경산 화파라 부른다. 예운 불화는 조선 후기 서울·경기지역 불화와 같이 시대와 양식에 따라 분류할 수 있다. 18세기 초와 18세기 말~19세기 초, 19세기 말로 분류하는데, 현존하는 근대기 예 운의 불화는 도상과 표현기법에 있어 다양한 경향의 불화 제작과 새로운 문물의 유입을 통한 신경향의 불화를 남기고 있다. 근대기 예운의 불화의 상당수는 서양화의 명암법을 도입하고 있으며 스승인 응석 의 맥을 이어 새로운 도상과 구도법을 창안하였다. 서양화의 명암법을 적용해 그린 그의 불화들은 당시 후원자들로부터 상당히 인기가 있었던 듯하며 현재 전국에서 작품이 남 아 전한다. 예운은 전통 도상을 기반으로 일반 회화나 민화와 같은 각종의 회화자료, 그 리고 새로 유입된 외국의 인쇄물 등의 시각적 체험과 자료들, 당시의 풍물·풍속 등 새 로운 요소들을 수용하기 시작하는 등 끊임없이 변화를 주기위한 시도들을 하였다. 표충사 <삼세불도>처럼 원과 같은 기하학적 도형을 사용해 화면에 집중감을 주면 서도 때로는 수많은 권속들을 적절히 분류하고 구획하여 시각적 효과를 살린 불화들과 기존 불화의 구성요소들을 새롭게 재구성하거나 일부를 첨삭하는 등의 방법으로 주제를 강조한 불화들을 제작하였다. 화면분할식 불화와 함께 새로운 불화를 시도하려 했던 그의 창작 의도가 보다 명확하였다고 할 수 있다. 이와 같이 근대기 예운 불화의 의미는 화사의 창의성이 발현된 점이라고 할 수 있으며 이후 새롭게 만봉에 의해 전승이 되고 현재에까지 이어짐으로 해서 역사적 변천을 살필 수 있다는 점이 또한 중요하게 평가될 수 있는 것이다. Yeun Sang-kyu was a Buddhist painter, known as “Mother of Buddha Image Paintings(佛母)” who was inherited by Gyeongsan School and kept the tradition intact till 1930. His Buddhist Image paintings are handed down from the mid-19th century on and his painting styles and lineages are well known and even the painting materials he used are cleary identified. So much he is recognized as unique and distinctive. During the late Joseon Period, the Buddhist paintings in the temples are provided and enshrined by the local monk painters and the large temples have accordingly housed a group of monk painters in their own territories. This monk painters were eventually clustered with the painter groups. “The Gyeonseong or the Gyeongsan School” was one of the most active painter groups who got together in Seoul and Gyeonggi area. Yeun`s Buddhist paintings so far extant in terms of iconography or drawing skills reveals inheritances of various styles of the previous traditions; early and late 18th century, or early and late 19th century styles are included. Moreover, on top of those mixture of traditions, he added a new trend of paintings based on the up-coming new cultures. Even western painting skills of shading were imbued with his many a Buddhist paintings and his creative new form of icons and compositions are keenly felt the influences of his direct master Eungseok`s style. His new Buddhist depictions seem to be popular among the connoisseurs and the collectors so that his art objects are spread out through the country. He tried to explore the new experiments with the visual effects, the painting materials and even utilizing of the folk painting subjects. The “Samse-bul-do(三世佛圖)” of Pyochung temple is an example of the modern skills of paintings, quite differed to traditional ones; applying the geometric shape of circles in the screen, newly alloting the Bodhisattvas and the protective figures, reconfiguring the Buddha images, sectional division of the canvas, etc. Likewise, Yeun`s style changes in his extant paintings show us his creativity along with the modern tranformation of Korean Buddhism. And his legacy is handed down to Manbong, who is one of descents of Yeun and connected to today`s Buddhist painting traditions.

개사를 통한 노래부르기가 정신지체아동의 어휘력에 미치는 효과

배정화,최성규 한국특수교육문제연구소 2004 특수교육저널 : 이론과 실천 Vol.5 No.1

본 연구에서는 개사를 통한 노래부르기가 정신지체아동의 수용과 표현어휘력 신장에 미치는 효과를 알아보고자 하였다. 본 연구대상은 부산시에 소재하는 J초등학교 특수학급에 재학 중인 정신지체아동 2명으로 선정하였다. 13개의 동요 등을 개사하여 72개의 표적어휘를 선정하였고, 개사를 통한 노래부르기는 10주에 걸쳐 주 4회씩 총 40회기동안 실시하였으며 매회기는 40분간 실시하였다. 한국표준수용어휘력검사를 이용하여 사전검사와 사후검사에서 어휘력 검사를 각각 2회 실시하였다. 본 연구에서는 개사를 통한 노래부르기가 정신지체 아동의 수용어휘와 표현어휘 신장에 긍정적인 영향을 미쳤음을 제시하였다. 특히 동물과 식물명, 그리고 일반사물, 가정도구, 가정, 사회생활, 여가생활 등과 관련된 명사 어휘의 수용과 표현이 높아지고 동사와 형용사에 대한 수용어휘력도 향상되었다. Mental retardation refers to substantial limitations such as mental intelligibilities and social interaction in present functioning. Especially, language abilities are basic social skill to identity and interact with themselves and others in the society as human beings. Unfortunately, the children with mental retardation are usually exposed in language difficulties. Vocabulary is a fundamental tool to lead smooth language development. The purpose of this study was to illustrate the effects of singing with changed words of songs to develop vocabulary abilities for children with mental retardation. Two children, 10.6(MA5.7) and 11.0(MA7.2) years old, with mental retardation were participated for this study. Thirteen sings were selected, and the words of the songs were changed based on seventy two target vocabularies. Pre- and post-test with Korean Standard Vocabulary Test were utilized to verify the effective of the singing to improve vocabulary ability for forty sessions. Each sessions was for forty minutes. The results of this study were that: (a) the singing strategy was effective to improve the receptive vocabulary ability; and (b) the singing strategy was effective to improve expressive vocabulary ability for children with mental retardation. Therefore, this study concluded that the singing is effective to improve vocabulary ability for mental retardation.

벼 밭재배에 따른 수량 및 미질

최원영,최민규,김상수,이규성,김태수,이재길 한국국제농업개발학회 2003 韓國國際農業開發學會誌 Vol.15 No.4

벼 밭재배시 논벼 품종들의 적응성을 검토하기 위하여 마늘 간작으로 벼를 건답점파하여 재배한 결과를 요약하면 다음과 같다. 1. 입모율은 밭벼에 비해 논벼 품종이 낮았는데 그 순서는 상남밭벼〉동진찰벼〉신선찰벼〉진부찰벼 순이었다. 2. 출수기는 상남밭벼에 비해 진부찰벼는 3일 빨랐고 신선찰벼는 9일, 동진찰벼는 12일이 늦었다. 3. ㎡당 수수와 등숙비율은 밭벼에 비해 논벼품종들이 높았다. 4. 쌀수량은 상남밭벼에 비해 신선찰벼는 12%가 많았고 동진찰벼는 같았으며, 진부찰벼는 18%가 적었다. 5. 완전립비율은 진부찰벼에서 높았고 그 외는 비슷하였으며, 식미지수는 상남밭벼에 비해 동진찰벼는 높았으나 진주찰벼와 신선찰벼는 낮았다. To identify the rice varieties adaptable for upland cultivation, a series of experiments was carried out at the field(Chonnam series) of the Muan. Cheonnam province during 1999 - 2001. Four varieties, Jinbuchalbyeo(early-maturing variety), Sinseonchalbyeo (medium-maturing variety), Dongjinchalbyeo(medium-late maturing variety), and Sangnambatbyeo as a standard variety for upland were used in this experiment. Seedling establishment of the varieties was the highest in Sangnambatbyeo and followed by Dongjinchalbyeo under upland condition. Heading date in general delayed ranges from 9 to 12 days, while early-maturing variety, Jinbuchalbyeo was faster for 3 days compared with Sangnambatbyeo. Number of panicle per square meter was similar in both lowland and upland rice but percentage of ripened grain was high in lowland rice. Milled rice yield was high as of 12% in Sinseonchalbyeo compared with Sangnambatbyeo. Head rice ratio showed also the highest in Sinseonchalbyeo. The results indicate that Sinseonchalbyeo as glutinous rice variety could adapt well in this upland condition, and have good milling recovery as head rice as well as yield advantage.

황해에 분포하는 오징어의 어황특성

최광호,조규대,김동선,김주일,김상우 한국수산자원학회 2003 한국수산자원학회지 Vol.6 No.-

황해에 분포하는 오징어는 1981년에 어장이 형성되어 1987년 최고의 어획수준을 보인 후 감소하여 1989년까지 어장이 형성되었다. 주어기는 8∼9월로 연간전체어획량의 60% 정도를 차지하였으며, 동해에 비하여 주어기가 짧게 나타났다. 월별 어장분포에 기초한 어군의 회유는 4월에 북상하여 11월에 남하하였으며, 서해에서 수온의 상승과 하강 시기와 잘 일치하였다. 서행에서 오징어 주어기인 8월과 10월의 수온전선대는 남북으로 길게 형성되었지만, 어황이 좋았던 1987년은 동서로 형성되어 어군의 밀집에 유리한 수온장벽의 역할을 하였다. 오징어의 동장조성은 6월에 16-23㎝의 범위로 평균 18.7㎝에서 12월 21-31㎝의 범위로 평균 26.0㎝를 나타내어 월의 이행과 함께 어획되는 오징어의 평균동장은 점차 증가하였다. In the Yellow Sea, the fishing ground of squid was formed from 1981 to 1989. Main fishing season was from Septembr to October, caught 60% of annual catch. The distribution periods of the squid in the Yellow Sea were short compared to those in the East Sea. due to retaining period of optimumal temperature. Squid migrated northward in April and southward in November. Because the migration pattern of squid related to a rise and drop time of water temperature. The catch of squid related to the forming direction of thermal fronts. The thermal front was formed in the south-west direction which runs parallel to the coast from August to October in normal year. But the catch was relatively high when the thermal front was formed in the east-west direction from August to October in 1987.

Divergences in the Theory of Cyclotron Resonance Lineshape

최상돈,고정대,최치규,홍성락,류재연 제주대학교 1990 논문집 Vol.31 No.-

불순물이나 포논과 상호작용하는 전자계에 대한 전기전도도템서와 사이클로트론 공명 선모양 함수를 도출하였다. 전기전도도텐서를 얻는 과정에서 Kubo공식을 이용하는데 타이론에서 무시한 보정항인 충돌항을 고려하고 이 항을 열적이완시간과 관련시켜 일반적인 형태를 얻었다. 섭동향을 계산하는데 Argyres와 Sigel의 사영연산자방법과 본 논문에서 정의한 사영연산자를 토대로 한 운동방정식방법을 다루었는데 이들은 서로 동일한 결과로 나타남을 알 수 있었다. 또한 최저차수에서 구한 선모양 함수를 타이론의 결과와 비교했고 고차항에서는 타이론에서 발산하는 것과는 달리 열적이완시간이 포함됨으로써 발산항이 존재하지 않음을 알 수 있다. A new theory of cyclotron resonance lineshape for the system of electrons in interaction with impurities of phonons is introduced. The collision term appearing in the Kubo formalism is dealt with in the relaxation tine approximation. The many body conductivity tensor is reduced to two different forms in the single particle formalism. But the two conductivity formulas give the same lineshape function, implying that the two techniques are identical. The thermal relaxation time included in the lineshape function is finite , resulting in the disappearance of any danger of divergence in some higher order terms usually excluded in the formula.

한국 표준 어음 변별력 검사 자료 개발

최성규 한국언어치료학회 1997 言語治療硏究 Vol.6 No.1

The purpose of this study was to develop the Korean Standard Speech Discrimination Test(KSSDT). The acoustic and Korean phonetic characteristics were considered to develop the KSSDT. The KSSDT was open test for children and youth with hearing loss. The test constructed with 125 words of five items. Each items consisted of 25 words, and each plates consisted of five pictures. The 2,712 children who are 2 through 17 years old were participated to calculate the mean and standard deviation. The reliability of the KSSDT was obtained through the correlation coefficient by using two different groups which lived with city and country. The correlation of coefficient for the total scale obtained, it was found to be highly reliable, r-squared = 92.99 %. Moreover, the r-squared of correlation coefficient of the each items was at the least 90.11 %. However, the KSSDT was not suitable for children who are under four years old. Also, the fifth item of the KSSDT was not suitable for children who are under eight years old. The KSSDT will contribute to (a) fitting hearing aids,(b) planning IEP for children with hearing loss and speech disorder, and(c) comparison of the effectiveness of various hearing aids.

Pb광도전막의 제조조건이 특성에 미치는 영향

崔圭萬,姜其成 관동대학교 1990 關大論文集 Vol.18 No.1

?? photoconductive Layer can be used for the target of the broadcasting image pick up tube, because it has good electric and optical characteristics. These characteristics of the ?? photoconductive Layer depend on the structure that is mainly effected by the fabrication condition of it. When the fabrication condition of this Layer are R.F.Power 600W, ?? Pressure 10mm Torr and substrate temperature 100℃, Photosensitivity γwill be 0.7. The dominant structure and the orientation of this Layer ae red (tetragonl) form and (101), (110) direction under the suitable deposition conditions. The Crystallite size is 1㎛×0.1㎛ and its form is needle Like.