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RISS 인기검색어
- 검색키워드
- 저자 : 김경진 ( Kim Kyeong-jin ) (검색결과 123 건)
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특별직교이방성 적층복합판의 형상비 변화에 따른 진동특성
김경진(Kyeong Jin Kim),박제선(Je Seon Park),민창동(Chang Min Min) 한국강구조학회 1995 韓國鋼構造學會誌 Vol.7 No.4
Recently, the application of high strength advanced composites in the aeronautics, aerospace and automobile industries has been extremely developed because of the advantages of such materials over the traditional materials. Today, advanced composites has been used in limited scale in civil engineering structures. One of the reasons for this has been mainly their complex nature of properties, manufacturing techniques and analysis methods on the part of civil engineers. Therefore, Vibration analysis is carried-out by classical theory and new vibration theory with increasing aspect ratios(b/a) in this paper. The comparisons of the classical energy method and Kim`s theory in beams and special orthotropic laminated composite plates is made. Suggestions are made with respect to plate analysis for structures composed of advanced composite materials.
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경사모세관법에 의한 우의 적혈구침강 속도에 미치는 환경온도의 영향
김경진,이방환,Kim Kyeong-Jin,Lee Bang-Whan 한국임상수의학회 1987 한국임상수의학회지 Vol.4 No.1
In this study, the effect of ambient temperature on the 45$^{\circ}$micro ESR/hr of cattle blood were observed, and a correction chart for correcting observed values at any ambient temperature to standard values at 20$^{\circ}C$ was plotted. Besides, the effect of storage temperature of blood on the 45$^{\circ}$micro ESR/hr was surveyed. The results were as follows: 1. The values of the 45$^{\circ}$micro ESR/hr were increased as the ambient temperature were elevated(P<0.01), and lower the value of PCV, higher the effect of temperature on the 45$^{\circ}$micro ESR/hr was observed(P<0.01). 2. Regression of values of 45$^{\circ}$micro ESR to ambient temperature in all the group of different level of blood PCV showed linear regression with the highly significant coefficient of correlation. With the results, correction chart was drawn as in Fig. 1. 3. In the purpose to verify the reliability of correction chart, observed values of 45$^{\circ}$micro ESR/hr in field(out door) were corrected to values at 20$^{\circ}C$ by the correction chart(Fig. 1), comparing with the observed values at 20$^{\circ}C$ of standard temperature. No significant differences were found between two groups mentioned above. 4. In the study on the effect of storage temperature of the blood on the 45$^{\circ}$micro ESR/hr, group of storage temperature at 5$^{\circ}C$ showed statistically no significant differences untill 24 hours in contrast with standard control group.
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궤양성 대장염 환자에서 혈청, 적혈구 및 대장점막의 엽산 농도와 임상적 의의
김경진(Kyeong Jin Kim),장영운(Young Woon Chang),김효종(Hyo Jong Kim),동석호(Seok Ho Dong),김병호(Byung Ho Kim),이정일(Joung Il Lee),장린(Rin Chang) 대한소화기학회 1999 대한소화기학회지 Vol.34 No.2
Background/Aims: In the patients with ulcerative colitis (UC), folate levels are frequently diminished due to poor oral intake, inadequate absorption, and increased metabolic demand of colonic mucosa. The aim of this study was to measure the folate concentrations in serum, red blood cell (RBC) and colonic mucosa of the patients with UC and normal control, and then to evaluate the relationship between the folate concentrations and clinical variables. Methods: Fifteen patients with UC and fifteen normal controls were enrolled. The folate concentrations in serum, RBC and colonic mucosa were measured by radioimmunoassay. Colonic mucosa was obtained by colonoscopic biopsy and its folate concentration was assessed according to the clinical variables. Results: The folate concentrations in serum and RBC were lower in the patients with UC than in control (serum: 3.56±1.58 ng/mL vs. 3.84±1.57 ng/mL, RBC: 311.4±105.3 ng/mL vs. 333.4±102.7 ng/mL) without statistical significance (p=0.94, p=0.19, respectively). However, the folate concentration in colonic mucosa was significantly lower in the patients with UC (288.64±65.84 ng/g tissue) than in control (480.6±163 ng/g tissue, p<0.001). There was a significant inverse correlation between the duration of UC and folate concentration in colonic mucosa (p<0.05). Conclusions: The measurement of folate concentration in colonic mucosa may be a direct method to evaluate of regional folate status in patients with UC, compared to those of serum and RBC. The long duration of UC induces low folate concentration in colonic mucosa. (Kor J Gastroenterol 1999;34:190 - 196)
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