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신영진,신현길,김택성,유기수,정태수,유평열,정철훈,이훈,신영신,홍관준 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.
늑막조직생검으로 진단한 Pleural Paragonimiasis 1 예
김기영,이승환,박진현,이재갑,용석중,신계철,홍욱균,김향인,진춘조 대한내과학회 1991 대한내과학회지 Vol.40 No.5
We report a 28-year old female patient with pleural paragonimiasis who did not have the usual diagnostic triad for this parasitic disease. She did not have chronic hemoptysis, there were no pulmonary infiltrations, and stool, sputum and pleural fluid examinations did not yield paragonimus ova. The diagnosis was made on the basis of ova found in the pleural biopsy. Paragonimus pleural effusion was resolved with frequent thoracentesis and oral praziquantel therapy.
HWE 방법에 의한 CdSe 박막 성장과 광전기적 특성
신영진,홍광준,이상열,유상하,서상석,문종대,김택성,정태수,신용진,이관교,김혜숙,정준우,정경아 한국센서학회 1997 센서학회지 Vol.6 No.4
The CdSe thin films were grown on the Si(100) wafers by a hot wall epitaxy method (HWE). The source and substrate temperature are 600� and 430 respectively. The crystalline structure of epilayers was investigated by double crystal X-ray diffraction(DCXD). Hall effect on the sample was measured by the van der Pauw method and studied on the carrier density and mobility dependence on temperature. From Hall data, the mobility was increased in the temperature range 30K to 150K by impurity scattering and decreased in the temperature range 150K to 293K by the lattice scattering. In order to explore the applicability as a photoconductive cell, we measured the sensitivity(γ), the ratio of photocurrent to darkcurrent(pc/dc), maximum allowable power dissipation(MAPD), spectral response and response time. The results indicated that the photoconductive characteristic were the best for the samples annealed in Cu vapor compare with in Cd, Se, air and vacuum vapour. Then we obtained the sensitivity of 0.99, the value of pc/dc of 1.39 X 10^7, the MAPD of 335mW, and the rise and decay time of l0ms and 9.5ms, respectively
김현수,이상수,오미희,이재갑,원구태,홍희승,용석중,신계철 대한내과학회 1991 대한내과학회지 Vol.40 No.4
The lung is the most common site of metastasis of extrapulmonary malignant tumor. According to past reports, metastatic cancer of the lung has been found in about 2% of all patients at autopsy. But these days, a diagnosis of endobronchial metastatic cancer utilizing bronchoscopy only is not easy. Thus we need other means of gathering more informaction, such as past history, discovery of other metastatic sites, and pathologic findings with special staining and electronmicroscope, especially in cases of poorly differentiated adenocarcinoma and epidermoid cancer, which are common types of primary lung cancer. We present 5 cases of endobronchial metastatic cancer. We found endobronchial metastatic cancer 2 cases of cervix cancer (epidermoid, adenocarcinoma), 1 case of colon cancer (adenocarcinoma), hypernephroma (renal cell carcinoma), and bladder cancer (transitional cell carcinoma). Since it was impossiole to diagnose the metastatic adenocarcinoma from the cervix only with lightmicroscopic findings, we could use past history and unusual radiologic and bronchoscopic findings which was thought to be the specific endoscopic finding of metastic endobronchial cancer. The interval between the diagnosis of the primary cancer and endobronchial metastatic cancer was 25.7 months. In the future, development of immunohistochemistry, monoclonal antibody, and molecular biologic techniques will give us diagnostic clue for differential diagnosis of metastatic endobronchial cancer from primary bronchogenic lung cancer.
Chemical Bath Deposition 방법으로 제작한 CdSe 박마의 특성
신영진,홍광준,이상열,유상하,서상석,문종대,신현길,김택성,송정훈,유기수,정태수 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.
문종대,정태수,신현길,김택성,이충일,홍광준,이상열,서상석,신용진,김혜숙,윤은희,김승욱,전승룡,유상하,이관교,박향숙,신영진 한국센서학회 1995 센서학회지 Vol.4 No.3
Polycrystalline Cd_(1-x)Zn_xS 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_xS polycrystal structure using extrapolation method of X-ray diffraction patterns for the CdS, ZnS sample annealed in N₂ gas at 550 ℃. It was found hexagonal structure which had the lattice constant a_o = 4.1364Å, c_o=6.7129Å in CdS and a_o = 3.8062Å, c_o = 6.2681 Å 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 박마의 열처리에 따른 광전기적 특성
문종대,정태수,신현길,김택성,신영진,홍광준,유상하,서상석,최승평,이상열,신용진,이관교,김혜숙,윤은희,김승욱,전승룡 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.
Mycobacterium Avium - in tracellulare Complex 와 M . Fortuitum 에 의한 폐항산균증(肺抗酸菌症) 3예
김상재,홍수표,배길한,김성진,진병환,정충모 대한미생물학회 1982 大韓微生物學會誌 Vol.17 No.1
Two cases of pulmonary disease in a 54 year-old female and a 70 year-old male patient due to Mycobacterium avium-intracellulare complex (MAIC) and a case of pulmonary infection in a 69 year-old male patient due to M fortuitum (MF) were found recently in this institute. All three patients bad a long history of anti-tuberculous chemotherapy because they were initially diagnosed as pulmonary tuberculosis. A 70 year-old male patient infected with MAIC had an unsuccessful chemotherapy history of isoniazid (INH), para-aminosalicylic acid (PAS) and streptomycin (SM) with an incomplete, temporary, symptomatic improvement, for three years since 1964 when he was first diagnosed as pulmonary tuberculosis on physical examination. A 54 year-old female patient infected with MAIC also had an unsuccessful chemotherapy history with the various anti-tuberculous drugs since 1958. Both patients discharged large number of MAIC in their sputum specimens for at least more than one year, but no M tuberculosis at all. A 69 year-old male patient infected with MF was diagnosed as moderately advanced pulmonary tuberculsis in 1977. Combined chemotherapy with INH+PAS+pyrazinamide (PZA) improved his clinical symptoms, however, his chest radiograph was deteriorated again in 1980 one year after he stopped therapy. Therefore he started chemotherapy again with INH+ethionamide (TH)+cycloserine(CS) but no improvement was noticed. MF was cultured from his sputum in August 1983 and he continuously discharged the same baeilli until last examination of January l982. Whether all three patients were initially infected with nontuberculous mycobacteria or complicated with predisposing tuberculosis was not clear because there were no reliable bacteriological Examination records.