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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.
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.
오크라톡신 A 로 오염된 사료중 지방함량이 가금의 에너지 및 단백질 대사에 미치는 영향
고태송(T . S . Koh),신동신(D . S . Shin),김동희(D . H . Kim),주명렬(M . R . Ju),최윤석(Y . S . Choi),김종배(J . B . Kim),신현길(H . K . Shin) 한국축산학회 1991 한국축산학회지 Vol.33 No.9
In order to reduce adverse effects of diets contaminated with Ochratoxin A(OA) on the productivity of birds, effects of fat levels in diets mixed with the OA on the protein and energy metabolism in chicks were studied. Diets with 4.0 ㎍ of OA per gram diet containing 3.0 and 6.0% of soybean oil were fed to White Leghorn chicks of 11-day old for 7 days of the experimental feeding period. Birds fed the OA and soybean oil showed a tendency of increasing the daily gain and feed efficiency and decreasing relative weight of liver and kidney per body weight compared with those fed the diet containing OA alone. The retention of protein, lipids and energy showed an increasing tendency in birds fed diets containing the OA and soybean oil compared with those of birds fed diets containing 4.0㎍/g of OA. And birds fed diets containing OA and soybean oil decreased urinary nitrogen and fecal nitrogen and increased digestibility of protein while the rate of nitrogenous compounds in urine was not different among birds fed experimental diets. Metabolizable energy content of diets and nitrogen balance increased and heat production per MEn intake was decreased in birds fed the OA and soybean oil.
Raw Ham 의 제조시 원료돈육의 품질에 따른 당의 첨가효과
최성수(S . S . Choi),강성철(S . C . Kang),최도영(D . Y . Choi),신현길(H . K . Shin) 한국축산학회 1991 한국축산학회지 Vol.33 No.6
For the utilization of PSE pork this study was designed to investigate the effects of quality of a raw meat and sugar added to the pickle solution on processing raw ham. Three treatment groups were compared: 1) normal meat pickled with sugar. 2) PSF matt pickled without sugar, and 3) PSF meat pickled with Sugar The addition of sugar to pickle solution in PSE meat decreased pH value at the end of ripening of the raw ham compared to those of untreated group Shrinking losses in all groups were similar but the highest loss was found in PSF meat pickled with sugar. During pickling and ripening. contents of salt and diffusion rate were higher in PSF meat than in normal meat and they were not changed with treatment of Sugar. Also there was no detectable effect of color development of NaNO₃ on the acidic raw meat. Therefore results from this study suggest that it is feasible to produce the raw harm from PSF meat with a similar quality to that of normal meat by adjusting the concentration of sugar added to the pickle solution.
유상하,홍광준,이상렬,신용진,이관교,서상석,김승욱,정준우,신영진,정태수,신현길,김택성,문종대,You S.H.,Hong K.J.,Lee S.Y.,Shin Y.J.,Lee K.K.,Suh S.S.,Kim S.U.,Jeong J.W.,Shin Y.J.,Jeong T.S.,Shin B.K.,Kim T.S.,Moon J.D. 한국결정학회 1997 韓國結晶學會誌 Vol.8 No.1
[ $CuInTe_2$ ] 다결정은 수평전기로에서 합성하고, $CuInTe_2$ 단결정은 수직 Bridgman 방법으로 성장시켰다. $CuInTe_2$ 단결정의 c축에 수직 및 평행한 시료의 광전도도와 광발광특성을 293K에서 20 K의 온도영역에서 측정하였다. 측정된 광전류 봉우리로부터 구한 c축에 수직 및 평행한 시료의 에너지 띠 간격은 상온에서 각각 0.948 eV와 0.952 eV였다. 광전류 봉우리와 광발광 봉우리의 에너지차는 포논에너지이며 상온에서 c축에 수직 및 평행한 시료의 에너지차는 각각 22.12 meV와 21.4 meV였다. 또한 광전류 스펙트럼으로부터 시료의 spin-orbit 상호작용과 결정장 상호작용에 의한 가전자대의 갈라짐 ${\Delta}cr$과 ${\Delta}so$는 각각 0.046, 0.014 eV였다. [ $CuInTe_2$ ] synthesised in a horizontal electric furnace was found to be polycrystalline. Single crystals of $CuInTe_2$ were grown with the vertical Bridgman technique. The photoconductivity and photoluminescence of the crystals were measured in the temperature range 20 to 293 K. From the photocurrent peaks measured for the samples both perpendicular and parallel to c-axis, the energy band gaps of the samples were found to be 0.948 eV and 0.952 eV at room temperature respectively. The energy difference of the photocurrent and photoluminescence peaks of the samples both perpendicular and parallel to the c-axis measured at room temperature was a phonon energy, and its values were 22.12 meV and 21.4 meV respectively. The splitting of the valence band due to spin-orbit and crystal field interaction was calculated from the photocurrent spectra of the samples, The ${\Delta}cr\;and\;{\Delta}so$ are 0.046,0.014 eV respectively.