http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
증착각도에 따른 As40Se15S35Ge10박막의 비정질상 변화에 관한 연구
정홍배(Hong-Bay Chung),김종빈(Jong-Bin Kim),이현용(Hyun-Yong Lee),박태성(Tae-Sung Park) 한국진공학회(ASCT) 1993 Applied Science and Convergence Technology Vol.2 No.1
본 연구에서는 광기록 매질 중 광유기효과가 큰 비정질 As_(40)Se_(15)S_(35)Ge_(10)박막의 증착각도 변화에 따른 구조 및 광학적 물질특성에 대해 고찰하였다. 준비된 bulk와 박막이 비정질상(Amorphous phase)임을 XRD 분석을 통해 확인하였다. 특히, 증착각도의 변화에 따른 비정질 As_(40)Se_(15)S_(35)Ge_(10)박막에서의 유리질 천이온도의 변화와 상분리 현상을 연구하였다. 유리질 천이온도의 확인은 DSC, DTA, TGA를 이용한 분석실험을 통해 수행하였다. 실험 결과 벌크의 유리질 천이 온도는 약 238℃였고, 0°, 60°, 80°로 증착된 박막은 각각 202℃, 229℃, 201℃였으며 80°로 증착된 박막의 경우 가장 낮은 값을 보였다. 또한 연속상과 분산상으로의 상 분리 현상은 편광현미경에 의한 광학구조분석과 SEM-EDS를 이용한 표면확인 및 성분분석으로 관찰하였다. In this paper, the physical and structural material properties were investigated in the obliquely-deposited amorphous As_(40)Se_(15)S_(35)Ge_(10) thin films having the large light-induced effects for optical recording media. The amorphous phase of bulk and thin films was observed by x-ray diffraction. Especially, we studied the change of the glass transition temperature(T_g) and the phenomena of the phase separation in amorphous As_(40)Se_(15)S_(35)Ge_(10) thin films as the result of deposition angles. Thermal analysis by DSC, DTA and TGA method was used for the determination of the T_g. The T_g of bulk was nearly 238℃ and those of 0°, 60° and 80° obliquely-deposited thin films were 202℃, 229℃, 201℃, respectively. As the result, it is found that the 80°-obliquely deposited thin film had the lowest T_g. And, the phase separation phenomena into dispersive and continuous phases were observed by the optical texture analysis with polarizing microscope and by the surface and composition analysis using SEM-EDS.
성인병 검진을 위해 내원한 60세 이상 노인에게서 연령증가에 따른 질환의 분포
김용훈(Yong Hoon Kim),곽현진(Hyun Jin Kwak),정홍배(Hong Bae Jeong),안명수(Myoung Soo Ahn),염주협(Ju Hyup Yum),조대경(Dae Kyoung Cho),남홍우(Hong Woo Nam),이홍순(Hong Soon Lee),유수웅(Soo Wong Yoo) 대한내과학회 1999 대한내과학회지 Vol.56 No.2
N/A With increasing life expectance and improvement of the overall health of the elderly, the understanding of geriatric disease becomes an important aspect of medical services. In the elderly, the frequencies of hypertension, DM, & anemia are increased according to aging and renal function is decreased progressively. As screening test for cervical cancer Papanicolaou smear is recommended due to its cost-effective benefits in females. In age-adjusted elderly male and female study populations, authors investigated the alterations of the above diseases, hypercholesterolemia, liver disease, obesity, & proteinuria distributions. Methods : This study included 1,181 aged 40 years (600 males, 581 females) visitors between January 1, 1997 and December 31, 1997 in National Medical Center, Seoul, South Korea. Authors divided these populations into two large groups such as group A and B. Group A was composed of 40-59 years, group B 60 years and older. Group A and B were subdivided into 4 subgroups each other, such as A-1, A-2, A-3 and A-4, B-1, B-2, B-3 and B-4 by means of age-adjusted dividing scale. We used our inclusion criteria to define each disease. Results : Hypertension was the most common disease in males of group B, but obesity was in females. The age-adjusted frequencies of hypertension, anemia, obesity & proteinuria were increased according to aging in the elderly aged 60 years and older. Though hypercholesterolemia revealed non-specific distribution in each group, increased frequency was observed in females compared to males in group B. With increasing their age, abnormal findings of Papanicolaou smear were found in females of group B. Conclusions : As the frequencies of hypertension, anemia, obestiy, proteinuria & abnormal findings of Papanicolaou smear were increased in the elderly aged 60 years and older as increasing their age. Much more attentions and follow up plans for these disease should be needed in the elderly.
1998년 1월부터 9월사이에 발생한 Malaria 의 임상적 고찰
김용훈(Yong Hoon Kim),곽현진(Hyun Jin Kwak),정홍배(Hong Bae Jeong),안명수(Myoung Soo Ahn),남홍우(Hong Woo Nam),이홍순(Hong Soon Lee),유수웅(Soo Wong Yoo),정예경(Ye Kyeong Jeong),이성은(Seong Eun Lee) 대한내과학회 1999 대한내과학회지 Vol.56 No.4
N/A Objective : Annually, the prevalence of indigenous and imported malarial infections is steadily increasing since 1993 in Korea. In order to understand the current characteristics of malarial infections and to prevent, the present research reviewed twenty-seven cases between January and September 1998. Method : In this study, all the twenty-seven (twenty- six patients) cases were obtained from admitted patients between January and September 1998. We had performed routine blood chemical studies, peripheral blood thin and thick smear, physical examination and abdominal sonography. Any patient with a previous history of a narcotic drug injection or had blood transfusion was excluded. Results : Twenty cases (74.1%) were indigenous and seven (25.9%) were imported malaria. Yeonchon-Gun (nine cases) was the most prevalent area in the indigenous cases; Cambodia (three cases) were the most one in the imported cases. Peripheral blood thin smear revealed Plasmodium vivax in all (100%) indigenous malaria, while four cases (57.1%) were P. vivax and one (14.3%) was P. falciparum and two (28.6%) were mixed infections with P. vivax and P. falciparum in the imported cases. In a 3-month period between July and September, peak prevalence (80.4%) was observed. The negative conversion of peripheral blood smear was achieved much earlier in the indigenous (3.9±1.4day) than in the imported (5.7±1.9day) after the treatment but, was not statistically signifcant. Conclusion : Plasmodium ovale was the only unique causative species in the indigenous malaria. Also Yeonchon-Gun and Cheolwon-Gun had been the most important endemic areas as previous reports. One relapse case had been occurred in the imported malaria. On the basis of our data, more efforts for control of malaria should be necessary for eradication and prevention of indigenous and imported malarial infections in Korea.