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유일수 江南大學 不動産學科 1983 不動産學報 Vol.2 No.1
지난 60년대 후반이래 수년마다 거의 주기적으로 우리 사회를 엄습해 오는 열병중의 하나가 부동산에 대한 과열투기 현상이다. 지난 1969년과 1973∼4년이 그랬고 1978∼9년의 부동산투기는 중동에서의 해외건설 수지호황과 때를 맞추어 그 극에 달했었으며, 작년 하반기부터 정부의 각종 경기 부양조치에 자극받아 일기 시작한 신축 APT의 가격의 상승은 급기야 토지쪽으로 까지 그 여파가 몰려 다시 한 번 전부동산시장을 투기적 양상으로 까지 발전된 것이다.
유일수,이종섭,소진탁,김재진 한국패류학회 1991 The Korean Journal of Malacology Vol.7 No.1
Heavy metals, Cd, Pb, Cu, Mn, Zn in water, sediments and molluscs along coast line of Hwang-hae(Yellow sea)were examined. The collection sited werer close to esturies of Kum-gang and Mankyeong-Gang, where industries have been rapidly developed along the rivers in recent in recent years. Cadmium and lead in water were 0.32ppb and 4.12 ppb respectively on Kun-san, but not on Jang hang. In general, Cd, Pb, Mn and Zn were detected in the regions of mouth paart of rivers, whereas none or far less amounts were detected from Puan, a control site: 20km apart from estury of Mangyeong Gang. Cd and Pb in sediments of Kunsan were 0.46ppm and 9.31ppm respectively and 0.36ppm and 0.41ppm in Shim-po, but far less amounts in Byeon san.Heavy metals in shellfish were: Cd 0.78ppm and Pb 0.42ppm in Kun san, 0.74ppm and 0.74ppm in Shim po, and showed higher values compare to other sites. In general, heavy metal contamination of sedimets and molluscs in each are were correlated with grade of the water pollution due to heavy metals.
특집:에너지플랜트 및 핵심기자재 기술 - 플랜트용 펌프/압축기 기술
유일수,Yu, Il-Su 재료연구소 2012 機械와 材料 Vol.24 No.1
플랜트 기자재 산업은 전력 석유 가스 담수 등 제품 생산 설비 및 공장 건설에 소요되는 기자재류 제조업을 일컫는다. 국내 플랜트 산업은 세계 7위 수준인 반면, 외화가득률은 30% 이하에 머물러 있다. 국산 조달률이 가장 저조한 기자재는 기계 기자재류이며, 특히 펌프, 압축기 등과 같은 회전장치류 대부분이 수입에 의존하고 있다. 따라서 국내 플랜트 기자재 산업의 장기적 기술경쟁력 확보를 위해서는 국산화율은 저조하지만 고부가가치 품목인 펌프, 압축기에 대한 기술개발, 외국기업과 기술제휴 및 M&A 등을 통해 기술력을 빠르게 확보하는 것이 필요하다.
일부 수질오염 지역의 농작물 및 주민의 뇨 , 모발 , 혈액의 중금속 함량에 관하여
유일수,노범진 ( Il Soo You,Bum Jin Rho ) 한국하천호수학회 1994 생태와 환경 Vol.27 No.4
This study is a study on the process of biological accumulation of heavy metals by analyzing crops and urine, hair and blood in inhabitants along Mankyeng river The pollution levels of heavy metals were examined with atomic absorption spectrophotometer from March 1991 to April 1992. The results showed that pollution levels in water was the highest value (Cd; 15.2㎍/l, Pb; 7.3㎍/l, Zn; 116.4㎍/l, Cu; 24.4㎍/l) in Korangdong(B). The degree of heavy metals in vegetables were the highest value(rice; Cd, 0.175mg/kg, Pb, 0.769mg/kg, cabbage; Cd, 0.124mg/kg, Pb, 0.949mg/kg, radish; Cd, 0.154mg/kg, Pb, 0.916mg/kg) in Korangdong(B) which adjacents to Chonju industrial area, and there showed the lowest in Youngamri(rice; Cd, 0.019mg/kg, Pb, 0.102mg/kg, cabbage; Cd, 0.019mg/kg, Pb, 0.162mg/kg, radish; Cd, 0.039mg/kg, Pb, 0.087mg/kg). The content of heavy metals in blood, urine, and hair is correlated with the contamination of soil, water, and crops.
유일수 한국유체기계학회 2023 한국유체기계학회 논문집 Vol.26 No.2
The paper presents a slip factor expression for two dimensional radial impeller with equiangular blades. The approximate method proposed by Sheets is applied to equiangular blades. The blade passage is divided into three sections: the inlet, the center, and the exit. The approximate velocity distribution in the center section is derived first, and then the solutions for the exit and inlet of the blade passage are added. The consistency of the present expression is confirmed by comparison with Busemann’s exact solutions. The present expression shows better consistency than Wiesner’s empirical correlation over the whole range of blade angles and number of blades.
만경강 지류에 서식하는 Unio Douglasiae 의 중금속 함량에 관한 조사연구
유일수,김환홍 ( Il Sou Yoo,Hwan Hong Kim ) 한국하천호수학회 1991 생태와 환경 Vol.24 No.2
For this survey, Unio douglasiae was collected from six station in Mangyung River from October 1987 to October 1990. The contents of Cd, Pb, Cr, Cu and Zn in edible portion of Unio douglasiae were analyzed. The results obtained are as follows; The contents of heavy metals in Unio douglasiae shoued in the range of 0.03∼0.34 ppm for Cd, 0.18∼1.69 ppm for Pb, 0.04∼0.38 ppm for Cr, 0.38∼1.24 ppm for Cu, 1.94∼3.24 ppm for Zn. As a whole, contents of heavy metals contained in Unio douglasiae from the lower course of the Jeon Ju Chon were larger than those from the upper course. But those was little difference between the contents of heavy metal at E site and F site.