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등방성체용 동적 광탄성 하이브리드 법 개발에 관한 연구
신동철,황재석,Sin, Dong-Cheol,Hwang, Jae-Seok 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.9
In this paper, dynamic photoelastic hybrid method is developed and its validity is certified. The dynamic photoelastic hybrid method can be used on the obtaining of dynamic stress intensity factors and dynamic stress components. The effect of crack length on the dynamic stress intensity factors is less than those on the static stress intensity factors. When structures are under the dynamic mixed mode load, dynamic stress intensity factor of mode I is almost produced. Dynamic loading device manufactured in this research can be used on the research of dynamic behavior when mechanical resonance is produced and when crack is propagated with the constant velocity.
Casein micelle 의 조성에 관한 연구 2 . Casein micelle 의 침전에 대한 온도의 영향
신동철,전우민,김영교 ( Dong Chul Shin,Woo Min Jeon,Yong Kyo Kim ) 한국축산학회 1984 한국축산학회지 Vol.26 No.4
This experiment was carried out to study on the protein composition of casein micelles. Casein micelles were isolated by different temperature of ultracentrifugation. And the composition of individual caseins fur the fractions was determined by DEAF - cellulose column chromatography, The results are summarized as follows: 1. When skimmilk was centrifuged at 4℃, 8.5℃, 13.5℃, 18℃ and 30℃ for 60 min at 200,000 x g, the values for the sedimented casein micelles were 57.80%, 79.79%, 80.85%, 90.43% and 86.88% respectively. 2. When skimmilk was centrifuged for 60 min at 100,000 x g, the values for the sedimented casein micelles and serum casein were 60.85%, and 39.15% at 20℃ and 40.24% and 59.76% at 4℃. 3. The relative amount of αs-, β-, k- and γ-caseins in serum casein which was not sedimented by centrifugation for 60 min at 100,000 x g was 44%, 29%, 19% and 8% at 20℃ and 38%, 34%, 16% and 12% at 4℃ respectively.
신동철,김수한,정희성,우정현 대한신경외과학회 1982 Journal of Korean neurosurgical society Vol.11 No.4
A rare case of intramedullary neurilemmoma of the spinal cord has been reported. A 23-year-old woman was admitted to our hospital, on 4th July, 1982, because of weakness of legs and difficulty of urination. Neurological examination revealed motor weakness of the both lower extremities with muscle atrophy. Sensory examination showed hypesthesia below the level of L3 dermatome of the right side and of L4 dermatome of the left. All deep tendon reflexes of the lower extremities were abolished and Lasegue's sign was not appeared. Manometric Queckenstedt's test showed a complete block, with CSF protein of 460㎎/㎗. Pantopaque myelogram demonstrated a complete block at the midportion of L1 spine. Total removal of the intramedullary tumor which was located in the dorsal column of the thoracolumbar segment was performed. The tumor was 4.0×1.5×1.0㎝ in size and it proved to be an Antoni-A typed neurilemmoma histologically. Only 20 similar cases have been published so far and summarized on Table 1, including our case. The relevant literature was reviewed.
실업계 고등학교 건축과 건축설계제도 담당교사의 교과목 인식에 관한 연구
신동철 경원전문대학 2002 論文集 Vol.24 No.-
This paper is on the Industrial Highschool teacher's recognition of Architectural Drawing Subject In Kyunggi Province. As results, they almost agree that Architectural Drawing Subject is the most important one in Architectural Education Procedure. Teachers recognize the teaching subject matters and methodology should be standardized, but they don't have the objective education materials and matters in practical classes. Because of want of getting opportunities on the Architectural Drawing Subject, teachers need to get chances of training education materials and methodology of it's course. Also, majority of them provoke the need of educational continuance to obtain the fruitful education result between high schools and colleges. Therefore, we must prepare the National Standardization of Architectural Drawing Matters and Methodology, and study the program of educational connection in order to develop students abilities.
신동철 경원전문대학 2001 論文集 Vol.23 No.-
With the trend toward network in all engineering domains, there are efforts that enable users to exchange data among different commercial packages by utilizing STEP. To realize collaborative architectural design using STEP, we need implementation of database for much STEP data over the network architecture and among different hardware platforms. The main objectives of CIS/2 database proposed in this paper are to share and to store effectively CIS/2 data produced by each of structural design modules within the distributed computing environment. Mapping CIS/2 entity to table, SQL statements for implementation of CIS/2 database and connection module for each of structural design modules using JAVA are the main components.