• Title/Summary/Keyword: material standardization

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Effect of Wood Material Type on Biocide Retention and Distribution Using Supercritical Fluid Impregnation

  • Kang, Sung-Mo;Jung, Doo-Jin;Koo, Ja-Oon;Morrell, J.J.
    • Journal of the Korean Wood Science and Technology
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    • v.33 no.5 s.133
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    • pp.50-56
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    • 2005
  • The effect of wood material type on biocide retention and distribution during supercritical fluid impregnation was assessed using three different wood types including solid wood, plywood and oriented strand board (OSB). The result revealed that biocide treatability differed with structural composition and permeability of the various materials. Low treatability of plywood might be attributed to interferences of glue line limiting fluid movement. OSB samples showed higher biocide retentions, resulting from the presence of interconnecting gaps permitting more open flow.

A Review on Quality Control of Korean Medicinal Herbs Through Packaging Standardization (국내 한약재의 유통상 품질 문제점과 포장표준화를 통한 대응방안 고찰)

  • Kah, Jin-Dong;Kim, Jai-Neung;Park, Su-Il;Lee, Youn-Suk
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.13 no.2
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    • pp.43-50
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    • 2007
  • The production, distribution, and consumption of Korean medicinal herbs have increased every year because of an increase of health considerations. But there are no sufficient standardization procedures in packaging and distribution systems related to these herb products. The standardization of packaging material and dimension could be a good addition for establishing proper quality control methods for Korean medicinal herbs. Medicinal herbs deteriorate under physical, chemical and biological hazards such as oxidation, textural change under high moisture content, color change by light, sanitation problems by insect invasion and contamination. Packaging standardization with proper functional packaging materials is critical to ensure the qualities of medicinal herbs. Also, storage and distribution efficiencies can be improved by achieving packaging dimension standardization. This review summarizes recent research trends related to quality evaluation methods and major quality deterioration factors of Korean medicinal herbs. This paper also offers reviews on some of problems and challenges in current packaging and distribution systems of medicinal herb industries and briefly suggests advanced quality control methods through packaging standardization.

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An Analysis on Architectural Characteristics of Domestic Modular Housing and Building Material Standardization Effect through MC Design (국내 모듈러 주택의 특성 및 MC 설계를 통한 건축자재 표준화 효과 분석)

  • Lee, Chang-Jae;Lim, Seok-Ho
    • Journal of the Korean housing association
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    • v.26 no.6
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    • pp.103-113
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    • 2015
  • Modular construction is a process in which a building is produced off-site in module boxes using standard materials. Since the introduction of prefabrication in building construction, Modular Coordination (MC) has become an essential design tool in building design and construction. However, in Korea, the design standardization has not been adequately applied to modular construction. This study intends to analyze the current status of modular construction in Korea and explore the applicability of MC design in the construction industry. The analysis of the current status of MC design within Korean four major modular construction companies indicates that an incremental dimension is not properly used in horizontal planning modules, which results in a problem of increasing construction cost by high material loss rate. But, in vertical planning modules, a incremental dimension of 100 mm (1 M) is found to be used although the structural system varies among manufacturers, which demonstrates the potential for an open system to be well applied in modular construction, despite different structural systems.

MC Design and Construction for Standardization of Exterior Materials of Modular Building (모듈러건축의 외장재 모듈정합설계 및 시공)

  • Chung, Joon-Soo;Lim, Seok-Ho;Seol, Wook-Je;Baek, Cheong-Hoon
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.34 no.6
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    • pp.31-37
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    • 2018
  • With the progress of national policy researches on the modular construction, many studies have been conducted regarding the standardization of interior building materials. However, studies on the standardization of exterior building materials are still insufficient, and there are no dedicated exterior materials for modular construction. In this regard, this study investigated the necessary of standardization through the analysis on 7 kinds of exterior materials used in general buildings and exterior building materials applied to modular apartment houses in order to establish design criteria for the standardization of dedicated modular exterior materials. Based on the analysis results, assembly reference plane in conjunction with inside dimensions was set, and panelizing standardized in five parts was proposed to solve the problem of low exterior material standardization rate. It also proposed elastic gasket and steel bracket details that can compensate for the fabrication errors of unit boxes and construction errors in stacking.

The Quality Regulation of Drug Excipients (의약품첨가물과 규격관리)

  • Choi, Myoeng-Sin;Hong, Chong-Hui;Jang, Seung-Jae;Kang, Chan-Soon
    • Journal of Pharmaceutical Investigation
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    • v.33 no.1
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    • pp.67-71
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    • 2003
  • Drug excipients are material used in the formulation of pharmacologically active drugs. They have a variety of roles including dilutents/fillers/bulking agents, binders/adhesives, propellant, disintegrants, lubricants/dlidants, colors, flavors, coating agents, polising agents, fragrance, sweeteening agent, polymers and waxes. Excipient should be inert or inactive and does not interfere with the test. Nowadays within industry there has been a recent surge of interest in novel excipient for novel dosage forms. The purpose of the review is to introduce the administration systems of drug excipient about kinds, matters to be attended to change of excipients.

Analysis of Classification for Maintenance Management in Urban Transit Facility (도시철도 보선시설물 유지관리를 위한 표준 분류체게 연구)

  • Park, Seo-Young;Shin, Jeong-Rul;Park, Ki-Jun;Kim, Gil-Dong;Han, Seok-Yun
    • Proceedings of the KSR Conference
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    • 2003.10b
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    • pp.448-453
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    • 2003
  • Most urban transit companies recognize the necessity of classification for facility management Classification for urban transit facility is necessary for standardization of maintenance management. The practical application. however. is not easy because of the absence of standardization of classification for urban transit facility and the difficulty in objectification of breakdown structure. This study suggests a proposal of classification for maintenance management in urban transit facility. This study defines standardization of classification as facility, work, maintenance and attribute to manage urban transit facility. And attribute classification consist of material, equipment and document. The suggested classification can be used as a useful maintenance management tool that enables evaluation of urban transit facility by standardization. The results of this study could be used as references for related urban transit companies.

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A Study on Standardization and Simplification of Construction Material Bill (시설공사 내역서 표준화 및 간소화에 관한 연구)

  • Yoo Seong-Yeon;Lee Je-Myo;Park Jun-Tack;Ryoo Yoon-Soo;Kim Jung-Gon
    • Air Cleaning Technology
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    • v.18 no.1 s.68
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    • pp.53-78
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    • 2005
  • Construction work is an art of making something out of nothing. To run the construction project smoothly, budget, organization and engineering should be balanced. Standardization and simplification of construction bill are needed in order to maximize the

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Standardization for $Cr^{+6}$ analysis in cement and concrete (시멘트 및 콘크리트의 크롬분석 표준화에 관한 연구)

  • Park, Nam-Kyu;Song, Hun;Chu, Yong-Sik;Lee, Jong-Kyu
    • Proceedings of the Korea Concrete Institute Conference
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    • 2006.11a
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    • pp.729-732
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    • 2006
  • Portland cement is presently the most widely used construction material. The process of manufacture of cement consists essentially of grinding the raw materials, mixing them intimately proportions and burning in a rotary kiln at a temperature of up to about $1450^{\circ}C$. Raw materials have used limestone, clay, silica, and iron oxide and fuel have used bituminous coal. Recently, A standpoint of the recycling of material resources, the production of cement use of industrial waste and residual products. Therefore, the final product of cement were included heavy metals such as $Cr^{+6}$ and Pb. The purpose of this study is standardization for $Cr^{+6}$ analysis in cement and concrete. From the comparative study of the examination method of $Cr^{+6}$ analysis, Japan cement association standard of $Cr^{+6}$ analysis is most suitable for the real state of affairs in korea.

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A Research on how to turn informationization Database of construction materials to practical use (건설 자재정보 DataBase의 실용화 방안 연구)

  • Kwon, Oh-Yong;Han, Chung-Han;Lee, Hwa-Young
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2007.11a
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    • pp.747-750
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    • 2007
  • Information of construction material is served through internet to user but it is poor to use information of construction material because of lack of information which is accumulated and insufficience of standardization. So informationization of civil materials are closely connected with works and then it is promoted to be used through works like design, construction etc. Informationization for management of information of construction material which reflects questionnaires about opinion of workers presents promotion by stage considering first, continuous renewal of information of construction material and increase in quantity, second classification system and standardization of terms in order to share and connect information of construction material third, developing inquiry method of material information needed in construction stage fourth, connecting material information DB and application through design and construction.

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