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정태수,유평열,신영진,신현길,김택성,정철훈,이훈,신영신,홍관준,유기수 ( T . S . Jeong,P . Y . Yu,Y . J . Shin,H . K . Shin,T . S . Kim,C . H . Jeong,H . Lee,Y . S . Shin,K . J . Hong,K . S . Rheu ) 한국센서학회 1993 센서학회지 Vol.2 No.1
A CdS single crystal was grown by using sublimation method. Lattice constants, a_o and c_o, obtained by using extrapolation were 4.1318 Å and 6.7122 Å, respectively. The carrier density was ∼10^(23) m^(-3) and the mobility was 2.93X10^(-2) ㎡/V-sec from measured Hall data at room temperature. The mobility has a increasing tendency in proportion to T^½ from 33 K to 150 K and a decreasing tendency in proportion to T^(-2) from 180 K to room temperature. The short wavelength band peak measured from photocurrent was due to intrinsic transition, and the energy value of this peak was equal to the energy band gap of CdS photoconductor.
Chemical Bath Deposition 방법으로 제작한 CdSe 박막의 특성
신영진 ( Y . J . Shin ),홍광준 ( K . J . Hong ),이상열 ( S . Y . Lee ),유상하 ( S . H . You ),서상석 ( S . S . Suh ),문종대 ( J . D . Moon ),신현길 ( H . K . Shin ),김택성 ( T . S . Kim ),송정훈 ( J . H . Song ),유기수 ( K . S . R 한국센서학회 1993 센서학회지 Vol.2 No.1
Polycrystalline CdSe thin films were grown on ceramic substrate using a chemical bath deposition (CBD) method. They were annealed at various temperature and X-ray diffraction patterns were measured by X-ray diffractometer in order to study CdSe polycrystal structure. Using extrapolation method of X-ray diffraction patterns for the CdSe samples annealed in N₂ gas at 450℃ it was found hexagonal structure whose lattice parameters a_o and c_o were 4.302 A and 7.014 A, respectively. Its grain size was about 0.3 ㎛. Hall effect on this sample was measured by Van der Pauw method and studied on carrier density and mobility depending on temperature. From Hall data, the mobility was likely to be decreased by piezo electric scattering at temperature range of 33 K and 200 K, and by polar optical scattering at temperature range of 200 K and 293 K. We measured also spectral response, sensitivity (γ), maximum allowable power dissipation and response time on these samples.
정태수,김현숙,유평렬,신영진,신현길,김택성,정철훈,이훈,신영신,강신국,정경수,홍광준,Jeong, T. S.,Kim, H. S.,Yu, P. Y.,Shin, Y. J.,Shin, H. K.,Kim, T. S.,Jeong, C. H.,Lee, H.,SHin, Y. S.,Kang, S. K.,Jeong, K. S.,Hong, K. J. 한국결정성장학회 1993 韓國結晶成長學會誌 Vol.3 No.2
수직 2단 전기로를 제작하고 결정성장관에 꼬리관을 연결하여 seed 결정없이 승화 방법으로 CdS 결정을 성장하였다. 이때 시료부분과 성장부분의 온도차 ${\Delta}T$가 이론적인 값 $14.7^{\circ}C$와 비교해서 실험적으로 얻은 값이 $15^{\circ}C$ 로 아주 일치하는 값을 나타내었다. 이때 꼬리관의 온도를 $110^{\circ}C$로 시간당 0.38mm 정도로 빨리 결정성장관을 끌어 올려 결정을 성장하였다. 분말법의 X-선 회절무늬와 Laue 배면 반사법의 Laue 무늬로부터 성장된 결정이 육방정이고 결정성장관의 길이 방향으로 c축을 갖는 단결정임을 확인하였다. 또한 CdS 단결정은 상온에서 전자 이동도와 운반자 밀도는 각각 $316cm^2/V{\cdot}sec$와 $2.90{\times}10^{16}cm^{-3}$정도이였다. We has made 2-zone vertical electric furnace and has been grown CdS single crystal by sublimation method in crystal growth tube with tail tube without seed crystal for growth. While it has been growing, temperature difference ${\Delta}T$ of source and growth part has nearly agreed with theoritical value $14.7^{\circ}C$and experimental value $15^{\circ}C$ Then, crystal of best quality has been grown, when temperature of tail tube has been $110^{\circ}C$, in spite of quickly pulling up crystal growth tube a degree O.38mm per hour. The grown crystal have had hexagonal structure and single crystal with c-axis to length of crystal growth tube from X- ray diffraction pattern of powder method and Laue pattern of back reflection Laue method. Also, the mobility and carrier density from Hall effect measurement have been $316cm^2/V{\cdot}sec$ and $2.90{\times}10^{16}cm^{-3}$ at the room temperature, respectively.
뱀독 Arginine - Esterase 가 혈액응고 및 섬유소 용해력에 미치는 영향
홍세용(S . Y . Hong),양동호(D . H . Yang),박정민(J . M . Park),신현길(H . K . Shin),황재훈(J . H . Hwang),정광희(K . H . Chung) 대한내과학회 1995 대한내과학회지 Vol.49 No.1
N/A Objectives: Arginine esterase in snake venom cleave peptide bonds in the fibrinogen molecule, thereby causing either coagulation or incoagulability of fibrinogen. There has been a controversy over whether arginine esterase of agkistrodon halys venom has any fibrinolytic activity in the thrombin-clotted fibrin. The aim of this study was to see whether the arginine esterase of agkistrodon halys venom itself has direct fibrinolytic activity and to compare the sentitivity of fibrin made of both thrombin and arginine esterase to the fibrinolytic activity of t-PA and urokinase. Methods: Fibrinolytic activity of arginine esterase was measured both by the fibrin plate method, and by the chromogenic method(S-2251). Coagulation activities of thrombin and arginine esterase were compared by the thrombin time(automatic coagulometer), based on the equivalent unit of each. Sensitivity of fibrin made of both thrombin and arginine esterase to the fibrinolytic activity of t-PA and urokinase was measured on fibrin film. To see whether arginine esterase degrade fibrinogen chain directly, fibrinogen was incubated with plasmin, thrombin, and arginine esterase and loaded on SDS-PAGE. Results: Fibrinolytic activity of arginine esterase was detected neither by the fibrin plate method nor using the S-2251 in NPP. Arginine esterase has no effect of the fibrinolytic activity of the euglobulin fraction of NPP, urokinase and t-PA. Arginine esterase does not degrade fibrinogen chain directly. Arginine esterase was found to be as strong a coagulant as thrombin. But the fibrin made of arginine esterase was more susceptible to both urolkinase and t-PA than that made of thrombin. Conclusion: Arginine esterase from Agkistrodod halys may be an useful anti-thrombotic drug.
홍광준,이상열,유상하,서상석,문종대,신영진,정태수,신현길,김택성,송정훈,유기수 ( K . J . Hong,S . Y . Lee,S . H . You,S . S . Suh,J . D . Moon,Y . J . Shin,T . S . Jeoung,H . K . Shin,T . S . Kim,J . H . Song,K . S . Rheu ) 한국센서학회 1993 센서학회지 Vol.2 No.1
Polycrystalline CdS thin films were grown on ceramic substrate using a chemical bath deposition method. They were annealed at various temperature and X-ray diffraction patterns were measured by X-ray diffractometer in order to study CdS polycrystal structure. Using extrapolation method of X-ray diffraction patterns for the CdS samples annealed in N₂ gas at 5500 it was found hexagonal structure whose lattice constants a_o and c_o were 4.1364 Å and 6.7129 Å, respectively. Its grain size was about 0.35 ㎛. Hall effect on this sample was measured by Van der Pauw method and studied on carrier density and mobility depending on temperature. From Hall data, the mobility was likely to be decreased by piezo electric scattering at temperature range of 33K and 150K and by polar optical scattering at temperature range of 150K and 293K. We measured also spectral response, sensitivity (γ), maximum allowable power dissipation and response time on these samples.
$Cd_{1-x}Zn_{x}S$ 박막의 성장과 광전도 특성
이상열,홍광준,유상하,신용진,이관교,서상석,김혜숙,윤은희,김승욱,박향숙,신영진,정태수,신현길,김태성,문종대,이충일,전승룡,Lee, S.Y.,Hong, K.J.,You, S.H.,Shin, Y.J.,Lee, K.K.,Suh, S.S.,Kim, H.S.,Yun, E.H.,Kim, S.U.,Park, H.S.,Shin, Y.J.,Jeong, T.S.,Shin, 한국센서학회 1995 센서학회지 Vol.4 No.3
Chemical bath deposition(C.B.D.)방법으로 다결정 $Cd_{1-x}Zn_{x}S$ 박막을 스라이드 유리(coming-2948) 기판위에 성장시켜 열처리하고 X-선 회절무늬를 측정하여 결정구조를 밝혔다. $550^{\circ}C$로 $N_{2}$ 속에서 열처리한 시료의 X-선 회절무늬로부터 외삽법으로 구한 격자상수는 CdS인 경우 $a_{0}\;=\;4.1364{\AA}$, $c_{0}\;=\;6.7129{\AA}$였으며 ZnS인 경우는 $a_{0}\;=\;3.8062{\AA}$, $c_{0}\;=\;6.2681{\AA}$였다. Van der Pauw 방법으로 Hall 효과를 측정하여 운반자 농도와 이동도의 온도 의존성을 연구하였다. 광전도 셀의 특성으로 스펙트럼응답 감도, 최대허용소비전력 및 응답시간을 측정하였다. Polycrystalline $Cd_{1-x}Zn_{x}S$ thin film were grown on slide glass(corning-2948) substrate using a chemical bath deposition (C.B.D) method. They were annealed at various temperature and X -ray diffraction patterns were measured by X-ray diffractometor in order to study $Cd_{1-x}Zn_{x}S$ polycrystal structure using extrapolation method of X-ray diffraction patterns for the CdS, ZnS sample annealed in $N_{2}$ gas at $550^{\circ}C$. It was found hexagonal structure which had the lattice constant $a_{0}\;=\;4.1364{\AA}$, $c_{0}\;=\;6.7129{\AA}$ in CdS and $a_{0}\;=\;3.8062{\AA}$, $c_{0}\;=\;6.2681{\AA}$ in ZnS, respectively. Hall effect on these sample was measured by Van der Pauw method and then studied on carrier density and mobility depending on temperature. We measured also spectral response, sensitivity maximum allowable power dissipation and response time on these sample.
CBD 방법에 의한 CdS1-xSex 박막의 열처리에 따른 광전기적 특성
문종대,정태수,신현길,김택성,신영진 ( Y . J . Shin ),홍광준 ( K . J . Hong ),유상하 ( S . H . You ),서상석 ( S . S . Suh ),최승평 ( S . P . Choi ),이상열 ( S. Y . Lee ),신용진 ( Y . J . Shin ),이관교 ( K . K . Lee ),김혜숙 ( H . S . Kim ),윤 한국센서학회 1995 센서학회지 Vol.4 No.1
Polycrystalline CdS_(1-x)Se_x, thin films were grown on ceramic substrate using a chemical bath deposition method. They ere annealed at various temperature and X-ray diffraction patterns were measured by X-ray diffractometer in order to study CdS_(1-x)Se_x, polycrystal structure using extrapolation method of X-ray diffraction patterns for the CdS. CdSe samples annealed in gas at a 0 it was found hexagonal structure which had the lattice constant a_0=-4.1364Å, c_0=6.7129Å in CdS and a_0=4.3021Å, c_0=7.3021Å in CdSe. respectively. Hall effect on these samples was measured by Van der Pauw method and then studied on carrier density and mobility depending on temperature. We measured also spectral response, sensitivity(γ), maximum allowable power dissipation and response time on these samples.
한석현,김창한,김종배,신현길,이승배 ( S . H . Han,C . H . Kim,J . B . Kim,H . K . Shin,S . B . Lee ) 한국축산학회 1985 한국축산학회지 Vol.27 No.12
Bacteriological quality of raw milk was determined by an ATP assay based on firefly bioluminescence reaction and was evaluated as a rapid method for the counting of bacteria in raw milk. The light yield was affected by the concentration of ATP, giving a straight line with a range of 10 to to 10^(-6)M. When the number of bacteria in a raw milk counted by a conventional method was compared with an ATP assay, it gave a good correlation(r=0.74). This a new rapid method can be used for the determination of bacteriological quality of raw milk and applied to the other system, respectively.