http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Gye-Woon (검색결과 198 건)
- 무료
- 기관 내 무료
- 유료
-
정운조,박계춘,정해덕 국립7개대학공동논문집간행위원회 2002 공업기술연구 Vol.2 No.-
Ti films were deposited onto 100×100 ㎜ alumina substrates using dc magnetron sputtering under the following conditions; substrate temperature of R.T.∼400 ℃, annealing temperature of 100∼400 ℃ and sputtering gas pressure of 1.3∼3.0×10^-2 Torr. And the film were examined by X-ray diffraction analysis (XRD), scanning electron microscopy(SEM) and 4-point measurement system. The best electrical and structural properties obtained by substrate temperature of ∼200 ℃, target-substrate distance of ∼14 ㎝ and sputtering pressure of 1.3∼1.7×10^-2 Torr. Also at that condition the most excellent adhesion was observed.
-
-
Citric acid-water system에서 Sr^+2 이온의 흡착특성
한운우,김진완,김계남 대전대학교 산업기술연구소 2000 산업기술연구소 論文集 Vol.11 No.1
Soil decontamination process was conducted to study adsorption and modeling characteristic of Sr+2ion using citric acid and water system with TRIGA soil. When the concentration of citric acid was increased, the BTC of Sr+2ion was to be closed to the BTC of 3H2O at experiments of soil adsorption, Beside, when the concentration of citric acid was under 0.01M Sr+2ion, BTCs was asymmetry. It was characteristic of nonequilibrium adsorption. R and Kp were decreased to be increased the concentration of citric acid. Asymmetry modeling was nearly the same to be compare with symmetry modeling in decontamination process, when the concentration of citric acid was decreased. Result of experiment was agree with asymmetry and symmetry model, when the concentration of citric acid was increased. When 0.0M citric acid was used as a solvent, the soil remediation eficiency was 39.1%. while, when 0.01M citric acid was used as a solvent, the soil remediation efficiency was 92.7% .
-
정운조,김성,박계춘 木浦大學校 應用科學硏究院 2001 應用科學硏究誌 Vol.1 No.-
The optical near field patterns, propagation loss and mode sizes of x-cut Ti:LiNbO_3 optical waveguide which was fabricated by Ti-diffusion varying with Ti strip thickness in wet oxygen atmosphere were investigated and tested at optical wavelength 1550nm. As Ti thickness increased from 760Å, the insertion loss of waveguide was decreased. But at Ti thickness 1500Å, mode sizes are widely broadened. This Ti thickness of below 1100Å and above 1500Å showed negative effects to propagation loss and fiber coupling. The best Ti thickness for fabricating low propagation loss and good fiber coupling. The best Ti thickness for fabricating low propagation loss and good fiber coupling was inferred to be between 1100Å-1500Å in our conditions. And for Ti thickness 1150Å, its propagation loss, horizontal/vertical mode sizes were measured 1.61dB/cm, 11.9/8.9㎛ for TM, 0.22dB/cm, 12.0/9.1㎛ for TE respectively.
-
정운조,김성,박계춘 국립7개대학공동논문집간행위원회 2001 공업기술연구 Vol.1 No.-
The optical near field patterns, propagation loss and mode sizes of x-cut Ti:LiNbO_3 optical waveguide which was fabricated by Ti-diffusion varying with Ti strip thickness in wet oxygen atmosphere were investigated and tested at optical wavelength 1550㎚. As Ti thickness increased from 760A˚, the insertion loss of waveguide was decreased. But at Ti thickness 1500A˚, mode sizes are widely broadened. The Ti thickness of below 1100A˚ and above 1500A˚ showed negative effects to propagation loss and fiber coupling. The best Ti thickness for fabricating low propagation loss and good fiber coupling was inferred to be between 1100A˚-1500A˚ in our conditions. And for Ti thickness 1150A˚, its propagation loss, horizontal/vertical mode sizes were measured 1.61㏈/㎝, 11.9/8.9㎛ for TM, 0.22㏈/㎝, 12.0/9.1㎛ for TE respectively.
-
정해덕,박계춘,조재철,정운조,김성구 木浦大學校 工業技術硏究所 1992 工業技術硏究誌 Vol.2 No.-
The polycrystalline CuInS_2 thin films are prepared by vacuum heat treatment of layer, which is deposited by vaccum evaporation in order. The electrical and optical properties of the films are investigated at various sulfur deposition mole rate, substrate temperature, heat treatment temperature and time. From data, n type- CuInS_2 exhibits resistivity, transmittance and energy band gap with 142[Ωㆍ㎝], 73[%], and 1.5[eV] respectively at optimum fabrication condition. Finally, the films are fabricated with chalcopyrite structure.
-
Woon-Gye Chung,Donald R. Buhler 대한약학회 2004 Archives of Pharmacal Research Vol.27 No.5
The pyrrolizidine alkaloids (PAs), contained in a number of traditional remedies in Africa and Asia, show wide variations in metabolism between animal species but little work has been done to investigate differences between animal strains. The metabolism of the PA senecionine (SN) in Fischer 344 (F344) rats has been studied in order to compare to that found in the previously investigated Sprague-Dawley (SD) rats (Drug Metab. Dispos. 17: 387, 1989). There was no difference in the formation of (±) 6,7-dihydro-7-hydroxy-1-hydroxymethyl-5H-pyrrolizine (DHP, bioactivation) by hepatic microsomes from either sex of SD and F344 rats. However, hepatic microsomes from male and female F344 rats had greater activity in the Noxidation (detoxication) of SN by 88% and 180%, respectively, when compared to that of male and female SD rats. Experiments conducted at various pH showed an optimum pH of 8.5, the optimal pH for flavin-containing monooxygenase (FMO), for SN N-oxidation by hepatic microsomes from F344 females. In F344 males, however, a bimodal pattern was obtained with activity peaks at pH 7.6 and 8.5 reflecting the possible involvement of both cytochrome P450 (CYP) and FMO. Use of specific inhibitors (SKF525A, 1-benzylimidazole and methimazole) showed that the N-oxide of SN was primarily produced by FMO in both sexes of F344 rats. In contrast, SN N-oxide formation is known to be catalyzed mainly by CYP2C11 rather than FMO in SD rats. This study, therefore, demonstrated that there were substantial differences in the formation of SN N-oxide by hepatic microsomes from F344 and SD rats and that this detoxification is catalyzed primarily by two different enzymes in the two rat strains. These findings suggest that significant variations in PA biotransformation can exist between different animal strains.
-
-
-
방사성 동위원소 추적자를 이용한 침전지내 플럭의 이동경로 추적실험
최계운(Gye Woon Choi),이무욱(Mu Uk Lee),김정현(Jeong Hyun Kim) 한국수처리학회 1997 한국수처리학회지 Vol.5 No.3
In this paper, the experiments for tracking the trajectories of the water and the floc in the sedimentation basin were conducted using radioactive tracer. The model was installed in the water treatment plant in which the total capacity was 280,000㎥/day including extra capacity of 30,000㎥/day which can be used for the water treatment plant. The result shows the velocity near the water surface elevation is faster compared to the others in the first half of the sedimentation basin. However, the velocity in the latter half in the sedimentation basin is increased by increasing the depth and then the velocity is decreased by approaching to the bottom. However, in the whole sedimentation basin it can be concluded that the velocity in the upper part is faster compared to that of the lower part. From the experiment for tracking the trajectory, by increasing the discharge in the basin the quantity of the floc to be settled down to the bottom is increased but the rate for removing the floc is decreased and finally in the case of the capacity of 2.0㎥/hr the floc of about one third of the peak value is remained in the water to the outlet weir. The moving velocity of the floc is not uniform in the sedimentation basin and the density of the floc near the area of the middle depth in the front part of the sedimentation basin is larger compared to the water surface or the bottom. However, by approaching to the outlet weir the difference of the density is decreased.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
