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전종국,김동연,최선남 大邱大學校 再活科學硏究所 1993 再活科學硏究 Vol.11 No.1
The purpose of this study was to investigate the effect on socio-democratic variables psychological variables on the positive self-concept of mothers in the families which has mentally retarded children. 380 mothers with mentally retarded children attending special schools in Seoul, Pusan, Taegu, Sunchon, Chongju, Chonju, Kwangju were employed in this study. The questionnare consisted of the items developed by Jung(1968) to measure mothers' self-concept, and the items to examine socio-psychological variables. Data were analyzed by regression analysis, cannonical analysis, and anova. The results of this were summerized as follows: The criterian variable(total self-concept) was explained by the satisfaction of family life, marrital life, health, husband's level of education, and family income. As a result, psychological varibales had greater effect on self-concept than socio-democratic varibles did. The physical self-concept and family self-concept of all 5 self-concept variables were only explained by the satisfaction of health and family life of all 5 psychological variables. The different psychological variables had different effect on self-concept variables. The family size, spuose's occupation, kind of the mentally retarded children, and the occurance of the mentally retarded showed significant differences in self-concept.
정지영,정경채,김병호,김태준,최종현,박남국 한국공업화학회 2002 응용화학 Vol.6 No.2
An experimental study for the investigation of the sodium-steam reaction phenomena was carried out. No significant aggressive explosion phenomena were observed as compared with that of sodium-water reactions. It was also observed that the rate of increase of reaction temperature decreases with increasing initial temperature of liquid sodium and that the temperature of the target depends upon the flow rate of injected steam.
Choi, Jong Hwan,Choi, Jae Hyuk,Lee, Yoo Jin,Lee, Hyung Ki,Choi, Wang Yong,Kim, Eun Soo,Park, Kyung Sik,Cho, Kwang Bum,Jang, Byoung Kuk,Chung, Woo Jin,Hwang, Jae Seok WJG Press 2014 World journal of gastroenterology Vol.20 No.25
<P>To compare outcomes using the novel portable endoscopy with that of nasogastric (NG) aspiration in patients with gastrointestinal bleeding.</P>
HCV, Acute, LT : Changing Characteristics of Pyogenic Liver Abscess in Daegu Area
( Jong Hwan Choi ),( Woo Jin Chung ),( Jae Hyuk Choi ),( Yu Jin Lee ),( Yu Jin Kang ),( Jung Min Lee ),( Eun Sung Choi ),( Sang Min Lee ),( Byoung Kuk Jang ),( Jae Seok Hwang ),( Eun Soo Kim ),( Kyung 대한간학회 2013 춘·추계 학술대회 (KASL) Vol.2013 No.1
Background: According to data from Korean national health insurance, incidence of liver abscess seems to be increased compared with one or two decades ago. We investigated changing characteristics of pyogenic liver abscess during recent 5 years in Daegu area. Methods: We reviewed retrospectively clinical and laboratory characteristics of patients who were diagnosed as pyogenic liver abscess between January 2007 and September 2012 at keimyung University Dongsan Hospital. Results: 205 patients were enrolled to this study, and male patients were 59.5% and mean age was 63.9 ± 12.7 years. 1. Abundant incidence of pyogenic abscess were 6th decade (29.5%), 7th decade (24.1%), and 5th decade (22.2%). 2. Common underlying diseases were hypertension (36.1%), diabetes (26.8%), biliary stone (14.7%), malignancy (11.7%), old CVA (3.9%). 3. Frequent presenting symptoms were fever (65.4%), chills (52.2%), and right upper quadrant pain (51.7%). Frequent laboratory abnormalities were elevated AST level (108.61 ± 98.54U/L, 70.7%), leukocytosis (18,033.03 ± 5,522.9/uL, 43.9%), and elevated total bilirubin level (3.49 ± 2.34 mg/dL, 37.1%). 4. Abscesses were present in right (67.8%), left (20.0%), and both lobe (12.2%). 71.7% of the abscesses were single and 28.3% were multiple. 5. 165 (80.5%) patients showed positive culture results. Among them, single organism was identified in 95.7%. Identifying organisms were K.pneumonia (67.3%), E.coli (10.9%) and E.faecalis (5.4%). 6. Common treatment modality was percutaneous drainage (78.0%). 18.0% of patients were treated medically, and 4.0% were underwent percutaneous aspiration. 7. The overall mortality rate was 6.8% (14 cases). Causes of death were septic shock (71.4%), and septic pneumonia, hepatic failure, hepatorenal syndrome, DIC (7.15%). Initial thrombocytopenia (80,910 ± 36,170/uL) was the risk factor affecting to the mortality rate. (P=0.008) Conclusions: Our data suggested that the peak age of pyogenic liver abscess was higher than previous Korean data and K.pneumoniae was still predominant etiology. Patients with initial thrombocytopenia required aggressive treatment due to high mortality rate.
Effects of Annealing Sequences on Ferroelectric Properties of Nb-Doped Bismuth Titanate Thin Films
Jong Kuk Kim,Jinheung Kim,Eun Kyung Choi,Jong-Hwa Kim,Sang Su Kim,Tae Kwon Song 한국물리학회 2003 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.42 No.IV
Nb-doped Bi4Ti3O12 (Nb-BIT) ferroelectric thin lms were prepared on Pt/Ti/SiO2/Si substrates by metalorganic solution deposition (MOSD) method. A nonionic block copolymer was used in the preparation of the precursor solutions in order to give a random orientation of crystal grains. Two annealing methods of conventional furnace annealing (CFA) and rapid thermal annealing (RTA) were compared to investigate dierences in microstructures, phase formations and ferroelectric properties of the crystallized Nb-BIT thin lms. Also, the eects of pre-heating at 500 C by RTA before the nal annealing steps at 700 C were studied. The lm crystallized at 700 C by CFA with pre-heating at 500 C by RTA showed good ferroelectric properties with random orientation and remanent polarization Pr = 26 C/cm2 at a maximum applied eld of 200 kV/cm. The pulse polarizations (P = P .. P^) decreased about 30 % of initial value after being subjected to 1.51010 read/write cycles at a frequency of 1 MHz.
( Jong-kuk Choi ),( Joo-hyung Ryu ),( Jee-eun Min ) 대한원격탐사학회 2021 大韓遠隔探査學會誌 Vol.37 No.4
We present quantitative estimations of changes in the areal extent of coral reef habitats at Weno Island, Micronesia, using high-spatial-resolution remote sensing images and field observations. Coral reef habitat maps were generated from Kompsat-2 satellite images for September 2008 and September 2010, yielding classifications with 78.6% and 72.4% accuracy, respectively, which is a relatively high level of agreement. The difference between the number of pixels occupied by each seabed type was calculated, revealing that the areal extent of living corals decreased by 8.2 percentage points between 2008 and 2010. This result is consistent with a comparison of the seabed types determined by field observations. This study can be used as a basis for remediation planning to diminish the impact of changes in coral reefs.