• 한국광물학회지
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• 제2권1호
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• pp.47-55
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• 1989

The Commission on New Minerals and Mineral Names (hereafter abbreviated as CNMMN) of the International Mineralogical Association was established in 1959 for the purpose of controlling mineral nomenclature, All proposals for introducing new minerals, changing mineralogical nomenclature, and discrediting or redefining existing minerals and mineral names should be submitted to the CNMMN for approval before publication. If approval is withheld, the proposal should not be published. This report incorporates material from previous reports on mineral nomenclature and procedures of the CNMMN (Fleischer, 1970; Donnay and Fleischer, 1970; Embrey and Hey, 1970; Hey and Gottardi, 1980; and Mandarino et al., 1984), and represents an attempt to consolidate this information and to present a there are differences between this report and the earlier ones, this versionis to be regarded as the correct one.

• 산학경영연구
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• 제11권
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• pp.173-194
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• 1998

본 연구는 신제품 개발이론에 대한 이론적 틀을 연구하고, 이에 기초하여 석재복합 관련제품의 신제품 개발 노선, 기술, 신제품 개발전략 구축과 선택 방안을 제시하였다. 석재복합 관련 제품의 대부분은 첨단 고도기술을 필요로 하는 영역이 한정되어 있기 때문에 이 산업 분야에서의 신제품 개발은 신제품 개발계획과 지침을 마련할 필요가 있다. 또한 유망 신제품 안건을 계층화하여 신제품 개발의 기본전략을 구축하는 신규사업 시나리오를 작성하여 신제품 개발전략을 구축하는 것이 효과적이다. 이러한 과정을 거쳐 중소기업의 경우는 현존하는 시장, 제품, 그리고 기술 우위에 기반을 둔 신제품을 개발할 경우 성공 가능성이 클 것이다. 이 이외에도 석재복합제품 개발은 석재자원과 신소재 개발에 바탕을 둔 신제품 개발에 필요한 기술 진전 사항, 즉 기술개발-제품개발-시장진입 활동간 상호 연계성을 고려해야 한다.

• Journal of Electrical Engineering and Technology
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• 제13권4호
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• pp.1682-1691
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• 2018

Natural ester is a suitable substitute for mineral oil and has been widely used in AC transformer in many countries. In order to further application of natural ester in direct current (DC) equipment, it is needed to investigate its long term insulation property under DC condition. In this paper, a thermal ageing experiment was conducted for both mineral oil-paper and natural ester-paper insulation. The DC breakdown and space charge characteristics of insulation paper impregnated with natural ester and mineral oil was compared. Results show that the resistivity of the paper immersed in natural ester and mineral oil both increase as the ageing goes on. While insulation paper impregnated with natural ester has higher resistivity and DC breakdown voltage than the paper impregnated with mineral oil. The DC breakdown voltage for the oil impregnated insulation paper being DC pre-stressing is higher than that without pre-stressing. The average DC breakdown field strength difference between the test with pre-stressing and without pre-stressing clearly shows that there is an apparent enhancement effect for the homo-charge injection on the DC breakdown.

• 자원환경지질
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• 제46권5호
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• pp.469-476
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• 2013

신정부 출범과 함께 박근혜 정부 140대 국정과제가 발표되었으며 미래창조과학부, 산업통상자원부, 해양수산부, 국토교통부, 환경부 등의 정부부처 또한 업무계획을 발표하였다. 정부 정책의 변화를 분석하고 그에 따른 연구개발을 추진하는 것은 공공 연구개발 기관의 주요 임무일 것이다. 이에 본고에서는 신정부의 R&D 정책 변화와 지질자원 관련 정부부처 R&D 정책 방향 및 전략 계획을 분석하였다. 분석 결과 일자리 중심의 창조경제와 안정 통합의 사회 구축을 위해 창조경제 생태계 조성, 창의와 혁신을 통한 과학기술 발전, 융합확산을 통한 성장동력 창출 및 안정적 에너지 시스템 구축, 환경창조산업 육성, 국민이 행복한 국토 창조를 실현하고자 하는 것을 확인할 수 있었다. 지질자원 분야에서도 원천기술/융복합기술을 중심의 새로운 가치를 창출하고, 미래 환경변화 트렌드와 고객 니즈에 부합하는 창의적 과제 발굴이 요구된다.

• 대한건축학회연합논문집
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• 제21권5호
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• pp.117-124
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• 2019

When manufacturing concrete, several mineral admixture is added to improve the basic physical property and durability and to make economical concrete. Such mineral admixture includes fly ash, granulated blast furnace slag, silica fume, etc., and not only the studies about mixing these mineral admixtures but also the studies for the development of new materials have been steadily in progress. Recently, some researchers have found, as a part of the development of new materials, the rice straw ash can also be used as a pozzolanic material for concrete considering similar chemical properties of rice straw ash to that of rice husk ash. But there has been insufficient amount of study about it. So, this study was to investigate the possibility as mineral admixture of agriculture by-product, by analyzing properties of concretes using rice straw ash with replacement ratio in comparison with other mineral admixture. In order to measure amount of SiO2 of rice straw ash, XRF(X-ray fluorescence) analysis was tested. For the measure pozzolanic reaction of rice straw ash, pH change and color change was tested according to curing day. Also to evaluate properties of concrete using rice straw ash, slump test, air contents test and compressive strength was tested.

• 한국수소및신에너지학회논문집
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• 제16권3호
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• pp.277-283
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• 2005

Pretreatment procedure was investigated into brucite powders for mineral carbonation materials. Higher magnesium content was found from brucite powders and weight loss due to hydroxy group(-OH) elimination, explained by FT-IR spectra, was found after pretreatment. X-ray diffraction results showed that the crystallographic changing of brucite into magnesium oxides during pretreatment. XPS core spectra also showed chemical transformation of magnesium ingredient from hydroxides to oxide.

• 한국수소및신에너지학회논문집
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• 제20권5호
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• pp.447-454
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• 2009

Electrolyzed reduced water was known as an alkaline solvent than piped water, natural water and mineral water etc. By means of reduction property, electrolyzed reduced water could dissolve a solute than other kinds of water without chemicals. In this study, serpentine dissolution in electrolyzed reduced water was investigated as a novel pre-treatment of serpentine which was a minerals for carbon dioxide sequestration. The elements (Ca, Si, Mg etc.) of serpentine were dissolved rapidly at early in the dissolvation then after some minutes the solubilities of serpentine elements showed stable state without abrupt changes. In spite of serpentine elements dissolution, chemical bondings and crystallographic structure of serpentine were not changed. It was explained that the dissolution mechanism of serpentine occurred from surface in electrolyzed reduced water and bulk structure sustained without collapse.

• 한국세라믹학회지
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• 제53권1호
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• pp.63-67
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• 2016

Mineral hydrate is a new insulation material that compensates for the defects of existing materials. Mineral hydrate is made of inorganic ingredients; therefore, it is nonflammable. The porous structure of mineral hydrate makes the material lightweight and insulating. Mineral hydrate insulation and similar products have been studied and manufactured in Korea and abroad. However, these insulation materials need to improve in terms of strength. In this study, basalt fiber was used to enhance the strength. In order to observe the property changes, compressive strength, heat conductivity, and specific gravity were measured and XRD pattern analysis was performed. These tests confirmed that basalt fiber was effective at improving the strength and lowering the heat conductivity of mineral hydrate insulation.

• 자원환경지질
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• 제42권6호
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• pp.669-673
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• 2009

• 자원환경지질
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• 제42권4호
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• pp.385-391
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• 2009