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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.
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.
김경진 ( Gyeong-jin Kim ),양애리 ( Ae-li Yang ),김진배 ( Jin-bae Kim ),진용덕 ( Yong-duk Jin ),노진호 ( Jin-ho Ro ),김단비 ( Dan-bi Kim ),류지혁 ( Ji-hyock Yoo ),오경석 ( Kyeong-seok Oh ),문병철 ( Byeong-churl Moon ),박상원 ( Sang 한국환경농학회 2017 한국환경농학회 학술대회집 Vol.2017 No.-
2016년에 대중국 쌀 수출길이 열리면서 낮은 인지도 및 고가격 대비 차별성을 극복하기 위해서 고품질 쌀 생산 및 가공기술과 더불어 안전성 확보는 필수요소가 되었다. 중국의 식품안전법에 근거로 한 새로운 食品中汚染物限量(GB2762-2012, 2013.6.1.)에 규정된 중금속 안전관리 기준에 맞는 쌀 생산을 위하여 6개 시군(철원, 이천, 청주, 서천, 군산, 해남)의 중국 수출용 쌀 생산단지에서 농경지 토양, 농업 용수 및 생산된 쌀을 채취하여 중금속을 분석하였다. 수출용 쌀 생산단지 토양의 비소 함량은 2.9~18.2 mg/kg 범위로 검출되어 환경오염 우려수준인 25 mg/kg 이하였으며, 카드뮴은 모든 시료에서 정량한계 수준인 0.006 mg/kg 이하로 검출되지 않았다. 구리는 충남 서천 지역에서 최고 25.6 mg/kg이 검출되었으나 토양오염 우려기준 250 mg/kg의 약 1/10수준으로 안전하였다. 그리고 니켈, 납, 아연, 6가크롬 등 분석한 8종의 중금속이 토양오염우려기준 보다 낮게 검출되어 안전한 수준임이 확인되었다. 농업용 수 중 비소의 잔류량은 하천수에서 최고 24.3 ug/L으로 상대적으로 많은 양이 검출되었으나, 지하수는 대부분 1~2 ug/L 수준으로 검출되어 농업용수의 수질기준(0.05 mg/kg)을 초과하지 않았다. 백미와 현 미 중 중금속 5종을 분석한 결과 수은과 크롬은 정량한계 미만이었으며, 카드뮴은 0.004~0.068 mg/kg 이 검출되어 한국과 중국의 잔류허용기준인 0.2 mg/kg 이하였다. 또한 백미 중 납은 0.002~0.136 mg/kg 범위로 우리나라의 백미 기준 0.2 mg/kg, 중국 현미 기준 0.2 mg/kg 이하로 안전하였다. 전반 적으로 쌀 중 비소 등 5종의 중금속 잔류량은 한국과 중국의 잔류허용기준의 1/10~1/20 수준으로 안전 하였다.
김경진(Kyeong Jin Kim),이연경(Yeonkyung Lee),김지연(Ji Yeon Kim) 한국식품과학회 2021 식품과학과 산업 Vol.54 No.3
Conventional nutrition services involve producer-oriented approaches without considering the differences in the characteristics and circumstances of each individual, whereas personalized nutrition services are consumer-oriented concepts that provide products and services for maintaining optimal health conditions based on the genetic, physiological, and metabolic characteristics of individuals, with these products based on balanced nutrition and healthy living. Currently, methods for evaluating dietary habits, monitoring dietary behaviors, deep phenotyping, and metabotyping via microbiota profiling, as well as methods for predicting big data by using machine learning, have been previously studied in Korea and abroad. With the development of medical technology and the improvement of hygiene, the demand for personalized nutrition and health services for healthier, happier, and more satisfying lives is rapidly increasing. Therefore, based on scientific technologies, attempts are needed to advance these services into global personalized markets and to boost the global competitiveness of countries and companies.