• Title/Summary/Keyword: base composition

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Effect of Oxygen Supply on Chemical Composition and Physical Properties of Tobacco Leaves During Flue-curing (잎담배 건조중 산소공급에 따른 내용성분 및 물리성 변화)

  • 황건중;석영선
    • Journal of the Korean Society of Tobacco Science
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    • v.18 no.1
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    • pp.49-53
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    • 1996
  • This experiment was carried out to study the effect of oxygen on chemical composition and physical properties of tobacco leaves during flue-curing. The results obtained were as follows: Starch content decreased and sucrose content increased with increasing oxygen supply during curing. Glucose and fructose of the cured leaves showed high content at the 5-10% oxygen supply. Amino-N and nitrate-N increased with increasing oxygen supply. Total nitrogen and NH4-N showed the lowest value at the 5-10% and 10-15% oxygen supply in the cutters and leaf, respectively. Chlorophyll and chlorogenic acid increased, and total volatile base decreased with increasing oxygen supply. The activity of α-amylase increased at the latter period of flue-curing, and the maximum activity point were delayed 12 hours with increasing oxygen supply. Shatter index of cured leaves decreased with increasing oxygen supply. It was desirable to supply oxygen during flue-curing for the improvement of chemical and physical properties such as starch, total sugar, chlorogenic acid, and shatter index of cured leaves.

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A Study on the Prerequisite of the Net and Gross Area in General Hospital (종합병원의 순면적과 총면적 설정의 전제조건에 관한 연구)

  • Seong, Joon-Ho;Kim, Khil-Chae
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.18 no.1
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    • pp.53-60
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    • 2012
  • Spatial configuration of the building quality relationships and reasonable distribution of space by utilizing the Net and Gross area. Therefore this study prerequisite for to investigate of Net and Gross area calculation in general hospital. For this study method as follow. First, a case study internal and external of net and gross area composition. Further more study on the other architect type. Second, a case study measuring area method for general hospital in internal and external. Finally, base on the analysis results of the drawn a net and gross area composition in general hospital.

Determination of Optimal Cutting Conditions Based on the Relationship between Tool Grade and Workpiece Material (피삭재와 공구재종의 상관관계에 근거한 적정 절삭조건의 결정)

  • 한동원;고성림;이건우
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.6
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    • pp.79-89
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    • 1998
  • In determining optimal cutting condition for face milling operation, tool wear is an important factor. For the purpose of establishing the relationship between various machining factors and tool wear, cutting tests have been performed. As a result, hardness and chemical composition of workpiece material, chemical composition and grain size of cutting tool and cutting speed have been selected as machining factors. In addition, relationship between feed rate and workpiece hardness has been observed. Prior to utilizing cutting conditions recommended by ‘Machining Data Handbook(MDH)’ as a knowledge base, an analysis for the validity of the MDH has been provided. Based on this analysis, tool life criteria applied by MDH has been modified. Finally, using MDH recommended data for neural network trainning, the results from the trained neural network for optimal cutting condition for some given workpiece and cutting tool can be used as reference cutting conditions.

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A Study on the Space Composition and Distribution of Departmentalized Classroom System in Middle School in Gangwon-Do (강원도 교과교실제 운영 중학교의 공간종류별 공간구성 및 면적 분포에 관한 연구)

  • Kim, Hak Cheol
    • Journal of the Korean Institute of Rural Architecture
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    • v.16 no.4
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    • pp.67-74
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    • 2014
  • Departmentalized Classroom System is new school operating system to apply social needs. Recent social needs are characterized as learning environment and self-learning system. The purpose of this study is to provide basic data for equal learning environment condition in middle school applying departmentalized classroom system. This study has progressed through analyzing on 11 remodelling case of middle school in Gangwon-Do. The method of this study is visiting middle schools that operate the system, grasping the condition for environment composition, and investigating and analyzing practical use of the environment. The results of this study are summarized as follows: 1) The space compositions for departmentalized classroom system are generally desirable, but some schools take irrational space composition, especially on home base-teacher laboratory, classroom-teacher laboratory. 2) The space area distributions are different in every school. This result is based on not taking standard criterion on space area distribution.

Studies on the Fat Content and Fatty Acid Composition of the Black-bean-sauce Noodles in the Chinese Restaurants (시중 유통 자장면의 지방함량과 지방산 조성 조사)

  • Kim, Hyo-Jin;Jin, Juan;Lee, Ki-Teak
    • Korean Journal of Agricultural Science
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    • v.37 no.2
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    • pp.261-266
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    • 2010
  • In this study, we determined lipid content, total fatty acid composition, trans fatty acid(tFA) content, and acid value of twenty black-bean-sauce noodles collected in Seoul city area. Total lipid contents of twenty samples were determined to be 3.33~9.23% on wet base. Total unsaturated fatty acids were from 47.83% to 83.18%(mainly oleic and linoleic acid). Total saturated fatty acids ranged from 16.06% to 51.48%. Besides, tFA contents in total lipid of samples were ranged from 0.38% to 1.39%, equivalent to 20 to 80mg per 100g of black-bean-sauce noodles. Acid values of lipids extracted from samples ranged from 0.56 to 2.88.

Genie: A Semantic Web Services Composition System base on Ontology (Genie: 온톨로지 기반 시맨틱 웹 서비스 합성 시스템)

  • 오지훈;시대근;정영식;한성국
    • Journal of KIISE:Computing Practices and Letters
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    • v.10 no.5
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    • pp.394-405
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    • 2004
  • To make Web Services the real applications, the efficient mechanisms for Web Services discovery, Web Services composition and Web Services execution must be provided. Among these issues, especially, Web Services composition plays the key roles in Web Services applications that are loosely coupled and composed applications consisted of primitive Web Service components. In this paper we demonstrate a new Web Service composition approach using ontologies. We apply ontologies to describe Web Services information such as Web Services input/output parameters, pre conditions, post conditions and other necessary management information. In this paper, we also introduce Action ontology and Object ontology to describe the functional properties of Web Services These ontologies offer semantic description of Web Services functionalities beyond the limitation of the current WSDL. We can achieve semantic interoperabilities between heterogeneous Web Services in terms of conceptual processing and realize semantic services composition. We implement semantic Web Services composition system called Genie based on service description ontologies.

Comparative Analysis of Completely Sequenced Insect Mitochondrial Genomes

  • Lee, Jin-Sung;Kim, Ki-Hwan;Suh, Dong-Sang;Park, Jae-Heung;Suh, Ji-Yoeun;Chung, Kyu-Hoi;Hwang, Jae-Sam
    • International Journal of Industrial Entomology and Biomaterials
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    • v.2 no.1
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    • pp.1-6
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    • 2001
  • This paper reports a few characteristics of seven insect mitochondrial genomes sequenced completely (Bombyx mori, Drosophila melanogaster, D. yakuba, Apis mellifera, Anopheles gambiae, A. quadrimaculatus, and Locusta migratoria). Comparative analysis of complete mt genome sequences from several species revealed a number of interesting features (base composition, gene content, A+T-rich region, and gene arrangement, etc) of insect mitochondrial genome. The properties revealed by our work shed new light on the organization and evolution of the insect mitochondrial genome and more importantly open up the way to clearly aimed experimental studies for understanding critical roles of the regulatory mechanisms (transcription and translation) in mitochondrial gene expression.

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Vegetation Structure of Peucedanum japonicum Thunb. Community in East Seaside of South Korea (우리나라 동해변 식방풍 군락의 식생구조)

  • Shin, Dong-Il;Song, Hong-Seon;Yoon, Seong-Tak;Kim, Seong-Min
    • Korean Journal of Medicinal Crop Science
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    • v.14 no.6
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    • pp.347-353
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    • 2006
  • This study was conducted to evaluate the vegetation structure and ordination of the Peucedanum japonicum Thunb. community by the Phytosociological method, floristic composition table on east coast of South Korea. The vegetation of Peucedanum japonicum Thunb. community was classified into 2 communities such as the Aster Spathulifolius community and the calystegia soldanella-Artemisia princeps community. Vegetation of the Peucedanum japonicum Thunb. community with the Aster spathulifolius community was shown southward, whereas vegetation of Peucedanum japonicum Thunb. community with the calystegia soldanella-Artemisia princeps community was shown northward from the base line of Pohang at North latitude of 36" 05'. Accordingly, the Peucedanum japonicum Thunb. community was grown commonly with the Aster spathulifolius community southward of the base line of Pohang, whereas it was grown commonly with the calystegia soldanella-Artemisia princeps community northward on the east coast. All environmental conditions of habitat taken together, the optimum habitat of Peucedanum japonicum Thunb. was at Ulsan geographically and the middle region of sea cliff topography, and was suitable for alkali. sandyloam.

A Study on the Electroless Ni-Cu-P Alloy Plating of Al Base Hard Disk(I)Effect on some Properties of Electroless Ni-Cu-P Deposits by Electrolyte and Heat Treatment Condition (알루미늄 기판의 무전해 니켈-구리-인 합금도금에 관한 연구(I) 전해액 및 열처리 조건이 무전해 니켈-구리-인 도금층의 제 물성에 미치는 영향)

  • 오이식;황용길
    • Journal of the Korean institute of surface engineering
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    • v.24 no.2
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    • pp.103-113
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    • 1991
  • Electroless Ni-Cu-P alloy plating of Al base hard disk was performed to investigate some properties according to the change of composition. It was found that the composition of Ni and Cu in deposits changed linearly with increasing the mole ratio of NiSO4.6H2O/CuSO4.5H2O. The increase in hardness by heat - treatment was confirmed to be associated with small size grained crystallization of the amorphous deposits. Acid resistance of all deposits layer. which had been heated up to 30$0^{\circ}C$, was found to be exellent when immersed in 1N-H2SO4 solution, and it showed more superior acid resistance with decreasing Cu content and with increasing P. The resistivity of the deposits heat treated became smaller at temperature more than 50$0^{\circ}C$, and it became largerly with increasing P content. Cu 44.1wt% alloy(C bath) showed the most superior non-magnetically stable characteristics after heat treatment. It was superiorly with higher temperature and with decreasing P content.

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