교맥 에탄올 추출물의 멜라닌생성 억제효과

김대성,노성택,이장천,임규상,신미란,우원홍,문연자 한국전통의학연구소 2006 한국전통의학지 Vol.15 No.1

The aim of this study was to investigate the effect of ethanol extract of Fagopyrum escuentum(FE) on the melanogenesis. To determine whether ethanol extract of FE suppress melanin synthesis in cellular level, B16F10 melanoma cells were cultured in the presence of different concentrations of FE ethanol extract. In the present study, the author examined the effects of FE ethanol extract on cell proliferation, melanin contents, tyrosinase activity. Cell proliferation was slightly increased by treatment with ethanol extract of FE (25-200 ㎍/ml). The ethanol extract of FE effectively suppressed melanin contents at a dose of 100 ㎍/ml. It was observed that the color of cell pellets was totally whitened compared with the control. The ethanol extract of FE inhibited tyrosinase activity, regulate melanin biosynthesis as the key enzyme in melanogenesis. These results suggest that the ethanol extract of FE exerts its depigmenting effects through the suppression of tyrosinase activity. And it may be a potent depigmetation agent in hyperpigmentation condition.

LED 교통 신호등의 구동 회로 설계 및 특성

노경호(Kyung Ho No),임병노(Byoung No Lim),박종연(Jong Yeun Park) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.5월

In this paper, LED traffic signal lamp"s operating circuit using Flyback converter and PFC IC has been presented. Most power conversion circuits use PFC IC for Power Factor Correction. The design parameter"s value of Flyback converter has been proposed and the error amplifier which regulates the output voltage has been designed. Besides, the under voltage protection circuit and the over voltage protection circuit for protecting the operating circuit from unbalance of common electric power source and the temperature compensation circuit for fixed optical output power have been proposed.

대학 스포츠로서의 골프활동에 대한 의식 조사

이순천(Sun Chun Lee),이성노(Sung No Lee),우연정(Yeun Jung Woo),천우광(Woo Kwang Chun),박진기(Jin Kee Park) 한국사회체육학회 1999 한국사회체육학회지 Vol.12 No.-

The purpose of this study is to recognize, in order to popularize the golf as a university-sports, the relevance between university students` general index(ex. sex, grade, development) and the grade of playing sports, and to illuminate their interesting to the golf and their value to the sports(the value of mental and physical). To realise this purpose, we made investigating sheets that have asked above points. We distributed those to 690(man and woman) the university students in Taegu and we have let them write in the way of self-administration. We got 622 effective samplings. The used program of this material is SPSS 8.0 statistic program. In order to recognize and analyse the relevance between university students` general index(ex. sex, grade, development) and the grade of plying sports, we have used cross-analysis. To their value(mental and physical) to the golf, we have used the Two-way ANOVA. With multiple comparative analysis of Tukey we carried out reproof. According to above process, we had the results, it is followed ; 1. Recognizability of Golf due to the relevance between university students` general index and the grade of playing sports; About the experience of playing golf, the answer `No have been` is in most, and we have quasi-results in the sex, grade, the grad of playing sports, except the development. To the interesting to the golf as a preliminary class, man is higher than woman, junior is higher than freshman and sophomore, we have quasi-result in the sex, grade. To the pupularizability of golf, we have followed result in most, it belongs to the high stratum, women is higher than men, and we have quasi-results in the sex, grade. To the experience to the golf through mass-media, regardless of university students` general index and the grade of playing sports, `Have been` is in most, so it represents the effect of mass-media, we have no quasi-results in this points. To the ratio of strength-consumption, in comparative to other sports, `Less` is more in man than in woman, in freshman is more than in junior. We have quasi-results in the sex, grade. 2. Valuability of Golf due the relevance between university students` general index and the grade of playing sports. To the psyco-value in sex and grade, `More` is represented in the woman as freshman and sophomore, in the man as junior and senior, we have quasi-results in the sex, grade. But, psyco-value and physical-value in sex, development, grade and the grade of playing sports, we don`t have quasi-results. In sum, the indirect experience to the golf is very high, but the direct experience is very low in Korean university students. Until now, they think , playing the golf is belonged to the high stratum, the interesting ratio is very high. So in order to popularize the golf, it is more need that, illuminating the superiority of golf in psyco-value and physical-value and expending the direct experience through the physical class in the university are more useful than simple and indirect experience through mass-media.

河海混成 潛在特異酸性土壤의 分布와 分類

鄭鍊泰(Yeun-Tae Jung),盧永八(Yeong-Pal No),白晴晤(Cheong-Oh Baeg) 한국토양비료학회 1989 한국토양비료학회지 Vol.22 No.3

국내 LED 교통 신호등용 안정기 구조별 특성 비교

박종연,노경호 강원대학교 산업기술연구소 2005 産業技術硏究 Vol.25 No.B

Instead of the incandescent lamps the LED lamps have been used on the traffic signal lamp with the advantages of small loss, no lens and long life. In this paper, we have compared three kinds of the LED controller structures and showed the LED array decision methods. We studied the temperature characteristics on LED and the temperature compensation network. The experimental results showed that the electrical characteristics of three kinds of the LED controller structures were different each other. We concluded that the temperature compensation is the important technique, the best compensation network has the ±10% variation for the luminous intensity.

嶺南地域에 分布된 段丘地土壤의 特性과 生成硏究

鄭鍊泰(Yeun-Tae Jung),愼齊晟(Jae-Sung Shin),盧永八(Yeong-Pal No) 한국토양비료학회 1986 한국토양비료학회지 Vol.19 No.3

多毛作을 위한 沓土壤 適性等級 區分

鄭鍊泰(Yeun-Tae Jung),朴殷號(Eun-Ho Park),盧永八(Yeong-Pal No),嚴基泰(Ki-Tae Um) 한국토양비료학회 1986 한국토양비료학회지 Vol.19 No.3

지방이양에 따른 시설운영의 문제점과 개선방안

남연희(Nam Yeun Hee),노준(No Jun) 한국복지행정학회 2008 복지행정논총 Vol.18 No.1

본 연구는 지방이양에 따른 장애인복지사업의 운영현황 및 그 문제점을 장애인시설 중심으로 살펴보고 그 문제점과 개선방안을 모색하는데 있다. 연구결과 장애인복지사업 지방이양에 대한 개선방안을 제시하면 다음과 같다. 첫째, 재정자립도가 매우 낮은 지방자치단체의 경우 현재 수준 이상의 지방교부금을 중앙정부가 추가로 지원하여 장애인 복지사업이 지역간 균형적으로 활성화되도록 하여야 한다. 둘째, 지역특성에 맞고 장애인의 욕구에 부응하는 장애인복지사업을 개발ㆍ보급해야 하며, 특히 장애인생활시설이 지방이양사업에 보다 능동적인 자세로 변화되어야 할 것이다. 셋째, 지방자치단체의 장애인복지사업에 대한 인식제고 및 담당 공무원에 대한 교육을 통해 장애인복지사업의 전문성을 확보해야 할 것이다. The purpose of this study was to suggest the problems and improvement plans of the facility operation which follows in local transfer. The results of this were as follows: First, it is necessary to financial support the low-level of local government financial. Secondly, it is necessary to development programs and must supply the disabled with person in local characteristics situations. Third, it is necessary to the chief of local government recognition improvement and a pubic servant must have the professionalism of disabled with person welfare service.

전압제어 GIC를 이용한 대역 및 고역통과 필터의 특성 비교

송명석,노경호,김왕식,박종연 강원대학교 정보통신연구소 2004 정보통신논문지 Vol.8 No.-

In this paper, we have presented comparative characteristics of band-pass filter and high-pass filter using VCGIC(Voltage Controlled Genenalized Impedance Converter), which are the non-linearized VCR(Voltage Controlled Resistance) and the linearized VCR. We concluded that the linearized VCGIC circuit has the wide dynamic range and the improved linearity.

경지정리(耕地整理) 답토양의 특성변화 조사(調査)

노영팔,정연태,박창영,박래경,No, Young-Pal,Jung, Yeun-Tae,Park, Chang-Young,Park, Rae-Kyung 한국토양비료학회 1983 한국토양비료학회지 Vol.16 No.2

영남지역(嶺南地域)의 경지정리실태와 경지정리(耕地整理)에 따른 답토양의 이화학적 특성(特性) 변화정도를 알기 위하여 경지정리사업(耕地整理事業)이 실시(1979~1980)된 33개(個) 시군(市郡)의 68개(個) 사업지구에 대한 설문조사(設問調査)와 아울러 1981년도(年度)에 경지정리(耕地整理)를 실시한 29개(個) 시군(市郡)의 37개(個) 사업지구 3,300ha에 대하여 절토답(切土畓)과 무절토답(無切土畓)의 이화학적 특성(特性)과 수량조사(收量調査)를 실시한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 설문조사결과(設問調査結果) 농민(農民)들의 대부분(大部分)이 경지정리(耕地整理)에 의(依)한 기반조성효과를 인정(認定)(70.3%)하고 있으나 경지정리후(耕地整理後)의 지력감퇴(地力減退)(27.2%), 지균작업부충분(地均作業不充分)(60.7%), 농민(農民)의 경비부담과중 및 공기지연(工期遲延)에 의(依)한 이앙지연초내(移秧遲延招來) 등(等)이 문제점(問題点)으로 나타났다. 2. 절토비율(切土比率)은 평탄지(平坦地)에서는 15.3%에 불과(不過)하지만 완경사지(緩傾斜地)나 경사지(傾斜地)에서 각각(各各) 25.9% 및 45%로서 경사도(傾斜度)가 높을수록 절토비율(切土比率)이 증가되었다. 3. 절토지(切土地)는 무절토지(無切土地)에 비(比)하여 경도(硬度) 및 가비중(假比重) 증가, 공극량(孔隙量)과 입단량감소(粒團量減少) 등(等)의 물리성(物理性) 악화(惡化)가 현저(顯著)하였다. 4. 지형별(地形別) 물리성(物理性)의 악화정도(惡化程度)는 홍적태지(洪積台地), 경사지(傾斜地)에서 큰 반면(反面)에 평탄지(平坦地)에서는 적었다. 5. 화학적특성변화는 절토지(切土地)가 무절토지(無切土地)에 비(比)하여 유기물(有機物) 및 유효인산의 함량(含量)이 현저(顯著)히 감소(減少)되었으나 규산(珪酸) 및 석회함량(石灰含量)은 증가되었다. 6. 경지정리답(耕地整理畓)의 절토지(切土地)는 지역내(地域內)의 무절사지(無切士地)에 비(比)하여 수량구성요소(收量構成要素)의 전반적(全般的)인 감소(減少)로 약(約) 28% 감수(減收)되었다. To find out problems and changing soil properties induced by leveling of paddy, a field survey was carried out with questionares to farmers of 68 project areas (990 farmers). The soil characteristics between natural soils and cut out sites was compared with soil samples taken from 37 project areas. More than 70 percents of farmers answered to the questionares expressed satisfaction on the paddy land leveling project; however, some farmers replied dissatisfaction that the arable land was decreased the soil productivity due to loss of surface soil or insufficient surface leveling, that the government support was insufficient and that transplanting of rice might be delayed due to retardation of the project. 1. The rate of cut out soils during the land leveling on plain terrain was about 15.3%, but the rates on gently sloped terrain (2-7% slopes) and sloped terrain (7-15% slopes) were relatively high showing 25.9% and 45%, respectively. 2. The deterioration of physical properties was clear in cut out site where the hardness and bulk density increased and the porosity and the rate of water stable aggregate decreased. 3. The degree of deterioration of physical properties on the Diluvial terrace was more severe than on plains or sloped alluvial fans and valleys. The decrease of available phosphorous and the content of organic matter in the cut out place due to land leveling were prominent. 4. The rice yield from cut site was decreased by 28% comparing with that from natural soils.