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김형수 한국농화학회 1960 Applied Biological Chemistry (Appl Biol Chem) Vol.1 No.1
① Inorganic paper chromatography를 蔘根灰分의 系統分析에 應用했으며 少量의 灰分으로 一齊分析이 可能하였다. ② 系統分析에는 6族法으로 하였으며, Hg, Pb, Cd, Cu, As, Sb, Al, Fe, Co, Mn, Zn, Ca, Na, K, 등의 陽 ion이 蔘根灰分中에서 檢出되었다. (Ba^(++)는 試驗不求得으로 不實施) ③ 蔘根灰分의 陽ion中 Ce, Zn, Mn 등은 그들의 植物榮養學的 面에서 關心事가 될 것이다. (貴金屬과 陰 ion에 對해서는 次後 繼續豫定임)
Apert 증후군에서 Fibroblast Growth Factor Receptor 2 EXON Ⅲa 돌연변이 1례
김형수,양필순,강지연,김옥영,구철회,이화모 대한소아청소년과학회 2000 Clinical and Experimental Pediatrics (CEP) Vol.43 No.7
저자들은 생후 1주일된 신생아(남아)에서 두부의 특징적인 기형, 손과 발의 합지증, 구개열, 비폐쇄를 동반한 Apert 증후군, acrocephalosyndactyly를 1례를 경험 하였기에 분자생물학적 연구결과 및 문헌 고찰과 함께 이에 보고하는 바이다.본 연구에서 저자들이 관찰한 환아는 Ser252Try 돌연변이를 갖고 있었으며 이러한 변이가 Apert 증후군의 임상적 특징을 야기하는 것으로 여겨지고 있다. 그러나 최근에는 이러한 돌연변이가 없는 Apert 증후군도 보고되고 있어23), FGFR2 유전자자체내의 아직 확인되지않은 이형성이 있을 가능성이 제시되고 있으며, 향후 많은 분자 생물학적 연구가 필요할것으로 사료된다. Apert syndrome is an uncommon congenital disorder characterized by malformation of the skull in association with symmetrical syndactyly of both hands and feet. This syndrome is autosomal dominant. The original description was presented by Apert in 1906. Since then more than 200 cases have been reported in the world. Recently, we experienced a case of newhorn male infant with congenital anomalies of the skull and extremities. Molecular biologically, he was found to have Ser252Try mutation in the FGFR2 exonⅢa. A brief review of literature was made.
나선형 간동맥조영 CT, Lipiodol CT 및 혈관조영술에 의한 간동맥 분지와 간분절 공급형태 분석
김형수 대한영상의학회 1996 대한영상의학회지 Vol.35 No.6
Purpose : To analyse the branching of the hepatic artery and respective arterial blood supply of liversegments, based on the Counaud classification. Materials and Methods : The analysis was based on 176 patients whohad undergone celiac arteriography, superior mesenteric arteriography, spiral CT hepatic arteriography(CTHA) andlipiodol CT for the detection of hepatic lesions. We compared CTHA findings with those of angiography and LipiodolCT. Results : There were five groups of hepatic artery variations and 23 of segmental supply pattern. The mostcommon branching pattern was that all branches arose from the common hepatic artery(131 cases ; 74%). The mostcommon segmental supply pattern, seen in 38% of cases, is that the right hepatic artery supplied segments V-Ⅷ, and the left hepatic artery supplied segments II-IV. Segment IV supply was mainly from the left hepatic artery, with 34% being provided by the right hepatic artery ; the supply to segment IV from the hepatic artery alsosatisfied 76% of the supply needs of segment 1. Conclusion : These results could be helpful for the planning oftreatment such as transarterial chemoembolization or subsegmentectomy.
국민학교 아동들의 속력 개념 형성에서 컴퓨터 인터페이스의 활용 효과
김형수,권재술 한국교원대학교 과학교육연구소 1995 청람과학교육연구논총 Vol.5 No.1
In this study, the researcher tried to find out the effect of using a computer interface in teaching speed concept in the elementary school. The 4th and 5th pupils were sampled for this study. The school is located in a sub-urban agricultural are in Korea. In the study, the subjects were divided into two groups: experimental and comparison group. From the pretest, two groups did not show any difference in the understanding of speed concept. The computer interface and the programs to operate the interface and data analysis were developed by researcher. The interface is a modular type and designed ready to connect to microcomputer. The test items were consisted of (1) comparison of speed, (2) change of motion, (3) acceleration, and (4) deceleration. As the result, the researcher found the following results: 1. In case of speed comparison, no significant difference was found between experimental and comparison group. 2. In case of change of motion, acceleration, and deceleration, the experimental groups showed higher achievement both in 4th grade and 5th grade. However, the 4th graders showed more learning than the 5th graders. In conclusion, this study showed that the use of computer interface seemed to be very effective in teaching and learning speed concept in elementary school.
급속응고한 고망간강 박판의 미세조직 및 기계적 성질에 미치는 Cr 첨가원소 및 열처리 영향
김형수,서동수,조성석,홍종휘,전병완 대한금속재료학회(대한금속학회) 1989 대한금속·재료학회지 Vol.27 No.5
Using a twin-roller type melt-quenching technique, we investigated the effects of Cr alloying element on the microstructure and mechanical properties of rapidly to solidified high manganese steel strip(0.5㎜ thick). We confirmed the possibility of manufacturing a high Mn alloy steel plate without hot-rolling by this method. In melt-quenched, the transformation from austenite to ferrite was suppressed resulting in only austenite phase. Its solidification mode is similar to the typical structure of the rapidly solidified metals. The dendrite structure region without directionality increased with increasing Cr alloying element. The 0.2% yield stress of the alloy with Cr was higher than the standard high manganese steel. The strengthening effect of Cr after heat treatment cannot be explained by its small solution hardening effect alone and is rather considered to be mainly attributable to gram refining due to the rapid solidification and the addition of carbide forming element, Cr.