구리의 내식성에 미치는 어닐링 열처리의 영향

김진경,문경만,이진규,Kim Jin-Kyung,Moon Kyung-Man,Lee Jin-Kyu 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.6

Copper is a well known alloying element that is used to improve the resistance to general corrosion of stainless steel And also Cu cation have the anti-fouling effect to inhibit adhesion of the marine algae and shellfish to the surface of heat exchanger cooling pipe or outside wall of the ship, Therefore there are some anti-fouling methods such as anti-fouling Paint mixed with copper oxide or MGPS(Marine Growth Preventing System) by using Cu cation dissolved to the sea wather solution. Cu cation can be dissolved spontaneously by galvanic current due to Potential difference between Cu and cooling pipe of heat exchanger with Ti material, which may be one of the anti-fouling designs. In this study the effect of annealing heat treatment to galvanic current and Polarization behavior was investigated with a electrochemical points of view such as measurement of corrosion Potential, anodic polarization curve. cyclic voltammetric curve, galvanic current etc The grain size of the surface in annealed at $700^{\circ}C$ was the smallest than that of other annealing temperatures. and also the corrosion Potential showed more positive potential than other annealing temperatures. The galvanic current between Ti and Cu with annealed at $700^{\circ}C$ was the largest value in the case of static condition. However its value in the case of flow condition was the smallest than the other temperatures. Therefore in order to increase anti-fouling effect by Cu cation, the optimum annealing temperature in static condition of sea water is $700^{\circ}C$, however non- heat treated specimen in the case of flow condition may be desirable.

마요네즈 살포에 의한 오이흰가루병 방제

김진경,심창기,박상원,박병준,지형진,김원일,권오경,임건재,Kim, Jin-Kyoung,Shim, Chang-Ki,Park, Sang-Won,Park, Byung-Jun,Jee, Hyeong-Jin,Kim, Won-Il,Kwon, Oh-Kyung,Im, Geon-Jae 한국유기농업학회 2009 韓國有機農業學會誌 Vol.17 No.4

시판 마요네즈를 이용하여 오이 흰가루병에 대한 방제효과를 시험하였다. 마요네즈를 0.5~2% 농도로 물에 희석하여 흰가루병이 발병된 오이에 6일 간격 3회 처리했을 때 8.3~99.2% 방제효과를 나타내었다. 90% 이상의 방제효과를 보인 마요네즈 희석액 중 2-3엽의 어린모에서 약해가 없었던 농도는 0.5%이었다. 마요네즈 중 기름함량이 78~80% 수준인 일반 마요네즈와 기름함량을 38~70%로 줄인 저지방 마요네즈의 흰가루병 방제력을 비교했을때 저지방 마요네즈는 방제율은 39.3~59.8% 수준으로 일반마요네즈에 비해 방제율이 떨어졌다. 마요네즈가 처리된 잎의 엽록소 함량은 발병구에 비해 엽록소 함량이 약 3배 정도 높게 조사되어 처리된 마요네즈가 오이 잎의 광합성을 저해하지 않으면서 흰가루병을 효과적으로 방제함을 확인하였다. This study was conducted to develop an organic control of powdery mildews of cucumber by using mayonnaise in green house. The treatment of 0.1~2% mayonnaise resulted in 8.3%~99.2% control efficiencies against powdery mildew of cucumber. 0.5% mayonnaise treatment resulted control values over 97% in disease. It did not adversely affected the photosynthesis of foliages. Although one application of mayonnaise to the foliage was not practically effective enough, two or three application of mayonnaise to the foliage at the 0.5% concentration resulted in excellent control against powdery mildews. This treatment could provide protection for 10~14 days after application. Among the type of mayonnaise, general mayonnaise revealed 97.5% control value, but mayonnaise containing low oil content revealed 39.3%~97.5% control values on powdery mildews at the 0.5% concentration. Therefore, oil content in mayonnaise played a essential material to control powdery mildew. Results indicated that mayonnaise could be used as organic control of powdery mildews of cucumber. This control might be environmentfriendly as well as cost-effective.

MECP2 유전자 돌연변이가 확인된 Rett 증후군 1례

김진경,기창석,김종원,Kim, Jin Kyung,Ki, Chang Seok,Kim, Jong Won 대한소아청소년과학회 2002 Clinical and Experimental Pediatrics (CEP) Vol.45 No.4

Rett syndrome is an X-linked dominant, progressive neurodevelopmental disorder, with a prevalence estimated to be one in 10,000-15,000 girls, which is thought to be the second most common genetic causes of mental retardation in females after Down syndrome. Patients with classic Rett syndrome show an apparently normal neonatal period, followed by developmental regression and deceleration of head growth, accompanied by gradual loss of speech and purposeful hand use, and development of microcephaly, seizures, autism, ataxia, intermittent hyperventilation and stereotypic hand movements. After regression between infancy and the fifth year of life, the clinical course stabilizes and patients usually survive into adulthood. It was recently discovered that Rett syndrome is caused by mutations in the methyl-CpG binding protein 2(MECP2) gene. Diagnosis of Rett syndrome is clinically difficult before three years of age, especially in atypical cases, but molecular analysis of the MECP2 gene could assist correct diagnosis in some patients. Recently, we diagnosed a case of Rett syndrome in a two year-old girl by mutational analysis of the MECP2 gene and want to report this case with brief review of literature. 저자들은 임상적으로 Rett 증후군이 의심된 2세 환아에서 MECP2 유전자의 직접 염기 서열 분석을 통해 P152R 돌연변이를 확인하였다. 이에 대한 문헌 고찰과 함께 보고하는 바이다.

동해 한국대지 코어퇴적물의 특성과 $^{87}Sr/^{86}Sr$ 초기비를 이용한 퇴적시기 규명

김진경,우경식,윤석훈,석봉출,Kim, Jin-Kyoung,Woo, Kyung-Sik,Yoon, Seok-Hoon,Suk, Bong-Chool 한국해양학회 2007 바다 Vol.12 No.4

동해 한국대지의 정상부 해저산 사면에서 획득한 코어퇴적물의 퇴적상 분석, 입도와 구성성분 분석, $^{87}Sr/^{86}Sr$ 초기비를 이용한 연대측정을 통하여, 세 단계에 걸친 코어퇴적물의 퇴적과정을 해석하였다. 코어의 하부 구간인 Unit I-a (코어깊이 $465{\sim}587cm$)는 주로 폭풍파에 의해 재동된 천해성 탄산염퇴적물로 이루어져 있으며, 이매패류와 부유성 유공충의 $^{87}Sr/^{86}Sr$ 초기비를 분석한 결과, 퇴적물의 생성시기가 약 $13{\sim}15Ma$(마이오세 중기)로 나타났다. 이는 당시 이 지역 일대가 폭풍파의 영향을 받는 천해환경이었음을 의미한다. Unit I-b (코어깊이 431$\sim$465 cm)는 저탁류에 의해 운반된 퇴적물로 이루어져 있으며, 이매패류와 부유성 유공충의 생성연대는 각각 약 $11{\sim}14Ma$, 약 $6{\sim}13Ma$인 것으로 분석되었다. 이로부터 11 Ma까지는 이 지역 일대가 천해환경을 유지하고 있었으나 그 이후로는 침강하기 시작하였음을 알 수 있다. 그러나 부유성 유공충은 11 Ma 이후에도 지속적으로 생성되어 퇴적물 내에 공급되었으며, 이렇게 생성된 퇴적물들은 연안이나 사면과 같은 근해역에 퇴적되어 있다가 6 Ma 경에 저탁류에 의해 사면 아래로 재동되어 퇴적된 것으로 해석된다. Unit II (코어깊이 $0{\sim}431cm$)는 주로 원양성 퇴적물로 이루어져 있으며, 부유성 유공충의 생성연대가 약 1 Ma로 분석되어, 이로부터 Unit I-b와 Unit II 사이에 약 5 Ma 정도의 결층(hiatus)이 있는 것을 알 수 있다. 또한 Unit II가 퇴적되었던 1 Ma 경에는 이 지역 일대가 충분히 침강하여 현재와 같이 수심 600 m 이상의 심해저환경을 이루고 있었으나, 때때로 주변의 급경사의 사면으로부터 암설류나 저탁류에 의해 조립질 천해퇴적물이나 화산쇄설물 등이 재동되어 퇴적된 것으로 해석된다. A piston core (587 cm long) was recovered from the upper slope of a seamount in the Korea Plateau. Three episodes of sedimentation were identified based on sedimentary facies, grain size distribution, carbonate constituents and initial $^{87}Sr/^{86}Sr$ ratio of carbonates. The lower part of the core, Unit I-a (core depth $465{\sim}587cm$) is composed of shallow marine carbonate sediments the deposited by storm surges, and is about $13{\sim}15Ma$ (Middle Miocene) based on $^{87}Sr/^{86}Sr$ initial ratio. This suggests that the depositional environment was relatively shallow enough to be influenced by storm activities. Unit I-b (core depth $431{\sim}465cm$) is mostly composed of turbidites, and Sr isotope ages of bivalves and planktonic formaminifera are about $11{\sim}14\;and\;6{\sim}13Ma$, respectively. This indicates that the Korea Plateau maintained shallow water condition until 11 Ma, and began to subside since then. However, planktonic foraminifera were deposited after 11 Ma and redeposited as turbidites as a mixture of planktonic foraminifera and older shallow marine carbonates about 6 Ma ago. Unit II (core depth $0{\sim}431cm$) is composed of pelagic sediments, and the Sr isotope age is younger than 1 Ma, thus the time gap is about 5 Ma at the unconformity. About 1 Ma ago, the Korea Plateau subsided down to a water depth of about 600 m. The sampling locality was intermittently influenced by debris flows and/or turbidity currents along the slope, resulting the deposition of re-transported coarse shallow marine and volcaniclastic sediments.

보수용접봉의 종류와 열처리가 용접금속부의 내식성에 미치는 영향에 관한 전기화학적 평가

김진경(Jin-Gyeong Kim),신재현(Jae-Hyun Shin),이명훈(Myung-Hoon Lee),김윤해(Yun-Hae Kim),문경만(Kyung-Man Moon) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4

Recently a fuel oil of the diesel engine in the ship is being changed with low quality as the oil price is higher more and more. Therefore the wear and corrosion in all parts of the engine like cylinder liner, ring groove of piston crown, spindle and seat ring of exhaust valve are increased with using of heavy oil of low quality. In particular the degree of wear and corrosion of piston crown is more serious compared to the other parts of the engine due to operating in severe environment such as the high temperature of exhaust gas and repeating impact. Thus the repair weldment of the piston crown is a unique method to prolong the life in a economical point of view. In this study, 3 kinds of filler metals(E4301, E4313, E4316) were welded at SS401 steel with base metal and corrosion property of their weld metals in case of heating treatment or not was investigated with some electrochemical methods such as measurement of corrosion potential, cathodic and anodic polarization curves, cyclic voltammogram and polarization resistance etc. in natural swawater solution. Corrosion resistance of the weld metal of E430l was superior to the other weld metals in case of no heat treatment, however, its resistance was decreased with heating treatment(annealing:625℃, 2hr). The weld metals of E43l3 and E4316 showed a relatively good results to the corrosion resistance by heat treatment.

제 5 회 통일문제 세미나 최우수논문 : 통일을 지향한 민족주의 과제

김진경(Jin Kyung Kim) 전주대학교 사회과학연구원 ( 구 사회과학종합연구소 ) 1987 정책과학논총 Vol.3 No.-

일부 지역 청소년들의 신체적 · 정신적 · 성적 · 사회문화적 영역별 문제경험정도와 상담의 필요성에 관한 연구

김진경(Jin Kyung Kim),김은숙(Eun Sook Kim),이정애(Jung Ae Lee) 한국보건간호학회 1997 韓國保健看護學會誌 Vol.11 No.2

실리콘 변성 에폭시 코팅 액의 제조와 물성

김진경 ( Jin Kyung Kim ),박승우 ( Seung Woo Bak ),황희남 ( Hee Nam Hwang ),강두환 ( Doo Whan Kang ),강호종 ( Ho Jong Kang ) 한국공업화학회 2014 공업화학 Vol.25 No.4

PDMS modified epoxy resin with epoxy group (EMPDMS) was prepared from the reaction of α,ω-aminopropylpolydimethylsiloxaneand diglycidyl ether of bisphenol-A (DGEBA) based epoxy resin, and PDMS modified epoxy hybrid compound (EMPDMSH)was prepared by introducing alkylesteraminopropyl alkoxy silane to EMPDMS. Their structures were characterized usingFT-IR, 1H-NMR and 29Si-NMR. Coating materials were prepared by mixing EMPDMSH base and solvent. Physical propertiesof the coating materials coated on epoxy/glass fiber composite film were measured according to the content of PDMS inEMPDMSH. Contact angle of coating film was increased 30 to 71 degree. Adhesive property of coating film was 5B degreebetter then epoxy or acrylate coating materials, and surface roughness was decreased as increasing in EMPDMSH.

동극활동이 유아의 리더십과 정서지능에 미치는 효과

김진경 ( Kim Jin Kyung ) 동국대학교 교육연구소 2017 교육연구 Vol.2 No.2

본 연구에서는 동극활동을 구성한 후, 이러한 동극활동이 유아의 리더십과 정서지능에 미치는 효과를 검증하고자 하였다. 연구대상은 서울시 G구에 소재하고 있는 H어린이집과 비슷한 생활환경에 있는 E어린이집 만 5세반 유아 20명씩 총 40명이었다. 유아 리더십을 측정하기 위하여 박성아(2010)의 도구를 사용하였고 유아의 정서지능을 측정하기 위해서 김경희(1998)의 도구를 사용하였다. 자료 분석을 위해 SPSS/WIN 통계프로그램 18.0을 활용하여 신뢰도 분석, 기술통계분석, 카이검증, 공변량분석이 실행되었다. 주요 연구결과로 첫째, 동극활동이 유아의 리더십에 유의한 효과를 미치는 것으로 나타났다. 둘째, 동극활동이 유아의 정서지능에 유의한 효과를 미치는 것으로 나타났다. 결론적으로, 동극활동이 유아의 리더십과 정서지능에 긍정적 효과를 미친다고 볼 수 있으므로, 교육현장에서 동극활동이 좀 더 활성화될 필요가 있을 것이다. The purpose of this study was to examine the effect of drama activity on the young children's leadership and emotional intelligence. The subject of this study were 40 children, 20 five-year-old children in H Nursery School located in G-gu, Seoul and 20 five-year-old children in E Nursery School in G-gu, Seoul. For this study scale of leadership (Park, 2010) and scale of young children's emotional intelligence (Kim, 1998) were used. SPSS/WIN 18.0 was used for data analysis. Reliability analysis of the scales and ANCOVA were conducted. The main results in this study were as follows. First, the drama activities had an effect on young children's leadership(F=12.963, p<.001). Second, the drama activities had an effect on young children's emotional intelligence(F=10.903, p<.01). Based on these results, it is necessary to perform the drama activities for long periods in order to predict the persistent effect of education and to persistently study various instructional media capable of affecting leadership and emotional intelligence other than the drama activities.

실행수준을 고려한 갈등소망 과제 개발 및 유아의 갈등소망 과제수행능력 분석

김진경(Jin Kyung Kim),이순형(Soon Hyung Yi) 한국아동학회 2008 兒童學會誌 Vol.29 No.6