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윤이용,김준혁, 김주희, 허혜민, 방혜림, 김상신 가톨릭관동대학교 대원환경연구소 2016 보건환경연구논문집 Vol.21 No.-
ABSTRACT : The real condition of the environmental education and students' views for it was analyzed and to present the direction of correct environmental education, a survey of 10 questions about the necessity, the expected effect, and the problem of Environmental Education has been investigated and analyzed
두 종모드 레이저 빛 사이의 맥놀이 신호를 이용한 간섭계에 의한 유효 광학 두께 측정
윤신영,조규만,이용산 한국광학회 1997 한국광학회지 Vol.8 No.1
서로 수직으로 편광되고 두개의 종모우드로 발진하는 주파수가 안정화된 He-Ne 레이저를 이용하여 넓은 측정 범위를 갖는 헤테로다인 간섭계를 구성하였다. 두 모우드 사이의 맥놀이 주파수인 684MHz에 대한 라디오 주파수 간섭을 이용하여 약 .+-.1.74.mu.m의 분해능으로 광학매질의 광학두께를 측정할 수 있는 장치를 구성하였다. 이와 같은 측정장치를 이용하여 Nd:YAG 레이저의 수동형 Q-스위칭에 포화흡수체로 사용되고 있는 유기염료 박막의 두께와 국부적인 광학두께의 변화에 대한 map을 구할 수 있었다. A wide dynamic range heterodyne interferometer scheme using intermode beat between a stabilized, dual frequency He-Ne laser beam has been applied for a measurement of optical thickness of an optical medium. Resolution of the optical thickness measurement is about $\pm$ 1.74 ${\mu}{\textrm}{m}$. Using this technique, we are able to determine the optical thickness of an organic dye film. We also obtain a map of the optical thickness variations over a surface of the film
윤이용(Yoon Yi yong),정소정(Chong So jung),윤상철(Yoon Chang chul) 한국해양환경·에너지학회 2006 한국해양환경·에너지학회 학술대회논문집 Vol.2006 No.-
최근 지구온난화로 인하여 동해안 어족 자원의 감소와 변화, 해저 식생의 아열대화와 같이 동해 연안 생태계의 급격한 변화가 주목되고 있다. 따라서 본 연구에서는 1960년도부터 2005년 사이 지난 45년 동안 매년 월별로 정선해양관측한 수온, 염분, 용존산소 등의 자료를 분석하여 동해 연안에 존재하는 해수 수괴들의 특성과 지구온난화로 인한 수괴별 물리, 화학적 특성 변화를 고찰하였다. 전 수괴의 수온이 지난 45년 동안 상승하였으며, 대마난류계수(약1.6℃ 상승)보다 북한한류계수(약2.33℃)의 상승폭이 약 1.5배 크며, 기후변화의 직접적인 영향을 받는 대마난류계 표층 수온의 상승폭이 2.57℃로 기온 변화폭 보다 크다. 이는 육상상태계보다 연안 생태계의 아열대화가 훨씬 빠른 속도로 진행될 수 있음을 암시 한다. 반면, 표층수의 염분은 기온상승과 더불어 강수량의 증가 추세로 지난 45년 동안 약 0.29‰감소하였다. 용존산소농도는 전 수괴에서 감소하는 추세이며, 특히 수온 상승폭이 큰 북한한류계수의 용존산소농도 감소가 년 간 0.021㎎/ℓ로 가장 크다. 동해고유수의 용존산소 감소는 수온 증가와 더불어 동해 내부 해양순환 시스템의 변화를 암시하며, 차후, 수온상승과 함께 연안 수산 생물의 서식환경에 부정적인 요인으로 작용할 것이다. Rapid variation of coastal ecosystem in the East Sea of Korea, such as fishery resource variation and subtropical chang of bentic flora, accordong to the global warming are actually noticed. In this study we try to identify the characterics of water mass existing in this coastal area and to consider the variation of their phisical and chemical properties using data of temperature, salinity and dissolved oxygen obtained by National Fisheries Research & Development Institute from 1960 to 2005. The temperature of all water mass rise during last 45 years; the rise of North Korea Cold Water temperature(about 2.33 ℃) is 1.5 times higher than that of Tsushima warm water(about 1.6 ℃), and the temperature rise of Tsushima Surface Water, directly affected by climate chang is 2.57 ℃ higher than the atmospheric temperature rise during same period, indicating that subtropical change makes progress more rapidly in the coastal marine ecosystem than in the land ecosystem. Otherwise, the salinity in the surface water decrease 0.29 ‰ during last 45 years due to the rising trend of rainfall with atmospheric temperature. The dissolved oxygen concentration in the all water mass make a decreasing trend. Specially for the North Korea Cold Water, the dissolved oxygen concentration diminish 0.021 ㎎/ℓ per year and the decrease in the East Sea Proper Water indicate a change of innner water circulation system.
尹伊鏞,朴相來,李東澈,金基台,崔銀珠,安由煥 嶺南大 海洋科學硏究所 1988 Marine Nature Vol.1 No.1
In order to observe hydrological characteristics in the Gulf of Yoeng-il, measurements of water temperature have been carried out from February to August 1983, and from August 1985 to December 1986. Surface water temperatures are closely linked to air temperature and solar-radiation for all littoral stations. Seasonal and annual variations of all horizontal stations are very similar to one another. Vertical variations of water temperatures for the stations located along the central-line of the Gulf are characteristic (and observed) as thermoclines and thermal stratification in the hottest summer-time (August). It is interesting to note that water column temperature of July and September are rather warmer than August, on account of a cold water mass coming from NE direction. For example, surface temperature in June 1982 was above 19℃, but the water below a depth of about 30m drastically drops to 4℃. It is indicative of invasion of water mass from cold current or deep sea.
췌장의 신경내분비종양의 임상양상 및 WHO 분류에 따른 예후
이용현(Yong Hyun Lee),손준호(Jun Ho Sohn),윤혁진(Hyuk Jin Yun),권형준(Hyung Jun kwon),천재민(Jae Min Chun),김상미(Sang Mi Kim),김상걸(Sang Geol Kim),황윤진(Yoon Jin Hwang),윤영국(Young Gook Yun) 한국간담췌외과학회 2010 한국간담췌외과학회지 Vol.14 No.3
Purpose: Clinical features of Pancreatic Neuroendocrine Tumors (PETs) vary according to the hormone secreted and to the heredity of the tumors. Malignant PETs are common among nonfunctioning PETs (NFTs) whereas the majority of functioning PETs (FTs) are benign. Our goal was to determine the clinical features and prognosis of PETs stratified by the WHO classification scheme and AJCC-UICC 7TH TNM staging. Methods: We selected for study 30 patients with PETs, including one case of nesidiolastosis, who presented at our clinic between April 1992 and June 2010. Clinicopathological features were studied retrospectively. PETs were classified as benign, uncertain malignant, well differentiated carcinoma, or poorly differentiated carcinomas by the WHO classification. For statistical analysis, Student"s t-test, the Chi-square test, and the Kaplan-Meier method were utilized. Results: Nine cases were FTs and twenty one cases were NFTs. The average size of the FTs was smaller than that of the NFTs (1.71 vs 4.33, p=0.04). The head of the pancreas was most commonly involved (33.3% of FTs; 47.6% of NFTs) but the locations of the tumors were not different. Insulinoma was the most common (66.7%, 6/9) among FTs. The incidence of malignant tumors was 33.3% and 55.0% among, respectively, FTs and NFTs. The 5-year disease-free survival rate of patients with benign PETs (FTs and NFTs), and of patients with functioning well-differentiated carcinomas was 100%. However, the 5-year disease-free survival rates of patients with nonfunctioning well- and poorly-differentiated carcinomas were 66.7% and 0%. Conclusion: Among patients with Pancreatic Neuroendocrine Tumors, malignant tumors are more common among NFTs than FTs. Poorly-differentiated carcinomas have a worse prognosis while all FTs regardless of their WHO classification fail to show any disease recurrence.