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김덕진(D.J.Kim),김현욱(H.U.Kim),이광배(K.B.Lee),김영천(Y.C.Kim),이상일(S.I.LEE) 한국정보과학회 1992 한국정보과학회 학술발표논문집 Vol.19 No.1
다중프로세서 모듈에서 시스템의 성능을 향상시키기 위한 한가지 방법으로 프로세서에 전용 캐쉬를 둔다. 본 논문에서는 한 보드상에 2개의 프로세서와 2개의 캐쉬를 사용한 다중 프로세서 모듈에서 캐쉬 제어기를 설계하였다. 각각의 캐쉬에 대하여 데이타 불일치 현상을 방지하기 위하여 수정된 일리노이즈 프로토콜을 사용하였다. 그리고 캐쉬 제어기의 동작 상태를 정의하기 위하여 상태도를 작성 하였으며, 각각의 sub-module에 대해서 VALID를 사용하여 로직 시뮬레이션을 하였다.
최동석(D.S.Choi),김덕줄(D.J.Kim),오승묵(S.M.Oh),황의상(E.S.Hwang),정용일(Y.I.Jeong) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
The OH molecule is a highly reactive combustion intermediate and relatively abundant in combustion systems. It also has the availability of convenient UV -laser systems to excite the A²Σ-X²?? electronic transition. The spectroscopic parameters describing this transition are well known. In this research, the OH molecule was measured in the laminar flame burner and constant volume combustion chamber(CVCC) in order to use it as the fundamental data for studying combustion phenomena. The LIF images of the OH molecule in the laminar 리ame burner were caught by using KrF excimer laser and ICCD camera. The natural fluorescence<br/> of OH was also measured by the interference filter(310 nm) and spectrometer in the CVCC at different equivalence ratios.
Laser sheet 광을 이용한 디젤분무의 성장에 관한 연구
서경일(K.I.Se),천무권(M.K.Chun),차건종(K.J.Cha),김덕줄(D.J.Kim) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
Diesel engine plays an important role in heavy industry and transportation owing to its high thermal efficiency compared with others. But, because these engines are producing pollution substances such as Soo, NOx, etc., air pollution is especially serious in industrial area and urban area. So recent major research and development studies in diesel engines are changing toward point to purify the polluted environment In diesel engines, the geometric structure of nozzle and the microscopic and macroscopic mixing processes between the injected fuel and the ambient gas have a great influence on the formation of Soot and NOx emissions. In this study, the inner microscopic structure and growth process of a non-evaporating diesel spray at different injection pressures and ambient pressures were investigated using laser sheet beam. These results were compared with those of impinged spray that is briskly studied now as a manner to decrease the exhaust emissions under the same conditions.
한국재래 산양육 추출물의 폴리에틸렌백 포장내의 저장에 따른 지방산 조성의 변화 Phospholipid 및 glycolipid 의 fatty acid 조성변화
박창일(C . I . Park),김덕진(D . J . Kim),이치호(C . H . Lee) 한국축산학회 1992 한국축산학회지 Vol.34 No.4
This study was performed to investigate changes in fatty acid composition of phospholipid and glycolipid during storage of extracts packed in polyethylene film of Korean Native Goat. Two Korean Native Goats with 9.8 ㎏ live weight were slaughtered and extracted to obtain samples of polyethylene bag package. The phospholipid and glycolipid compositions were analyzed on extracts stored at 4℃, -3℃ and -20℃ for 0. 7. 14, 21 and 28 days of polyethylene bag storage. Two compositions were analyzed by the GC. The results obtained wereas follows: 1. The highest among saturated fatty acid of phosphlipid was palmitic acid, the second highest fatty acid was stearic acid and myristic acid. respectively, while the highest among unsaturated fatty acids was oleic acid, the second one was linoleic acid and palmitoleic acid. respectively, while the second one was oleic acid, Palmitoleic acid increased during the entire storage time at the other storage temperature, oleic acid and linoleic acid decreased during the storage time at 4℃ and -3℃. 2. The highest among saturated fatty acids of glycolipid was palmitic acid, the second highest fatty acid was stearic acid, myristic acid, palmitoleic acid, linoleic acid. Palmitic acid decreased at 4℃, but the change was not as the storage time passed, decreased at -3℃ and -20℃. Oleic acid increased remarkable during the storage time passed at 4℃. but -3℃ and -20℃ increased a few.
김수찬,강승일,김승철,황정호,김성녕,김영,송선대,조상래,김덕원,Kim, S. C.,Kang, S. I.,Kim, S. C.,Hwang, J. H.,Kim, S. Y.,Kim, Y.,Song, S. D.,Cho, S. N.,Kim, D. W. 대한의용생체공학회 2002 의공학회지 Vol.23 No.3
결핵을 진단하는 방법 중에서 신속하고 비교적 비용이 적게드는 방법은 객담을 통한 결핵균 도말 검사이다. 결핵균 도말 검사는 슬라이드에 도말한 환자의 객담을 가온 과정을 통해 고착시키고. acid-fast 염색방법을 통해 염색시킨 후 현미경으로 결핵균을 관찰하는 것이다. Acid-fast 염색방법은 크게 hot staining과 cold staining 방법 두 가지가 있으며, 우리나라에서는 염색 결과가 선명한 hot staining 방법인 Ziehl-Neelsen 방법을 주로 이용한다. 그러나, 기존의 결핵균 자동염색기는 가온 기능이 없어 환자의 객담을 슬라이드에 검사자가 고착을 시켜야 하고. 선명도도 낮은 문제점을 가지고 있다. 본 연구에서는 검사자의 인력 절감과 검사자 개인의 염색 능력에 따른 염색 정도의 변화를 줄이기 위해 가온이 가능한 결핵균 자동염색기를 개발하였다 개발된 염색기는 객담의 고착에서 염색 그리고 건조가지 전 과정이 자동으로 이루어진다. 염색 시간은 5개의 슬라이드를 고품질로 염색할 경우 21분이 소요되었다. 성능 평가를 위해 총 91개 객담을 대상으로 자동과 수동염색을 시행하여 일치율을 비교해 본 결과 75%로 통계적으로 유의한 차이를 보이지 않았다 (P>0.05). The detection of tubercle bacilli (TB) from sputum smear is one of the fast and inexpensive methods for diagnosis of tuberculosis. For this method. sputum smears are usually flexed by heating and stained by acid-fast staining method, and then examined under an optical microscope. Two Procedures are commonly used fur TB staining. One is hot staining and the other is cold staining method. The Ziehl-Neelsen method which is a hot staining method is widely used in Korea because its stained color is more vivid However, the conventional automated stainer has to fix the sputum smear on a slide manually and the stain is not so vivid because it has not heating function. In an effort to save labor and minimize variations in manual staining Procedure. we developed an automated stainer with heating function. The entire staining process is fully automated. from fixation to final washing and drying. With the automated methods, five slides can be flexed and stained in 21 minutes at consistent high quality We compared the concordance rate between the two methods for 91 sputum samples to validate the stain quality of the developed automated stainer. As the results, the concordant rate between the two methods was 95% and there was no significant difference (p>0.05)
5ml 스트로에 보존한 돼지 액상정액의 정자농도에 따른 수정능력에 관한 연구
박창식(C . S . Park),한성욱(S . W . Han),소중섭(J . S . Soh),김덕임(D . I . Kim),정홍기(H . K . Chung),류창구(C . G . Ryu) 한국축산학회 1992 한국축산학회지 Vol.34 No.2
This experiment was carried out to investigate the fertilizing capacity and optimum sperm concentration of liquid boar semen with BF_5 diluent in 5㎖ maxi-straw. The sperm-rich fraction of each ejaculate was slowly cooled to room temperature by 2 h after collection. Semen was centrifuged for 10 min at 1.500 rpm and the seminal plasma removed by aspiration. Semen was resuspended in BF^5 diluent to provide about 2×10^8 sperm /㎖. 6×10^8 sperm/㎖ and 10×10^8 sperm/㎖. Semen was cooled in a waterbath to 5℃ over a 2 h period and BF_5(+2% glycerol) diluent was added to cooled semen(1:1). Straws were immediately filled with 5㎖ of semen and steel or glass balls were used to seal the ends of the straws. The straws were horizontally placed on a metal rack and stored at 5℃ in a refrigerator. At insemination the straw was rediluted with 80㎖ BTS diluent. The optimum sperm concentration of liquid boar semen in 5㎖ maxi-straw was 50×10^8/5㎖. Farrowing rate and number of pigs horn alive per litter of diluted semen with 50×10^8 sperm concentration stored at 5℃ for 7 days were 85.0% and 10.11. respectively.