• 제목/요약/키워드: newly

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난삭재의 고능률 연삭을 위한 연삭숫돌의 개발에 관한 연구 (A Study on the Development of High Performance Grinding Wheel for the Difficult-to-Grind Materials)

  • 조기수;이종한;손기락
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1995년도 춘계학술대회 논문집
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    • pp.118-123
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    • 1995
  • A new grindignwheel was developed for the high performance gfinding of difficult-to-grind materials. Te grinding performance (such as grinding forces, grinding ratio, and surface roughness of ground surface) of the newly developed wheel was evaluated through experiments. Experimental results show that the performance of the newly developed wheel is superior to conventional alumina wheel and comparable to the S-G wheel.

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Characteristics of Volatile Organic Compounds from Newly Produced Building - Apartment House

  • Lee, Jeong-Joo;Kim, Jeong-Ho;Kim, Shin-Do
    • 한국환경보건학회:학술대회논문집
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    • 한국환경보건학회 2004년도 International Conference Global Environmental Problems and their Health Consequences
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    • pp.223-226
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    • 2004
  • Building materials emit high concentration volatile organic compounds(VOCs), formaldehyde(HCHO) and other hazardous air pollutants(HAPs) to indoor environment. Average value of VOCs and HCHO emission concentration were $3,770\;{\mu}g/m^3$, $430\;{\mu}g/m^3$ in newly buildings, respectively. VOCs and HCHO emission characteristic are high emission level at initial time and decreased in course of time.

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Two newly recorded genera Gongylidioides Oi, 1960 and Mermessus O.P.-Cambridge, 1899 with descriptions of Gongylidioides kaihotsui Saito and Ono, 2001 and Mermessus naniwaensis (Oi, 1960) (Araneae: Linyphiidae) from Korea

  • Kim, Seung Tae;Lee, Sue Yeon;Yoo, Jung-Sun
    • Journal of Species Research
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    • 제5권2호
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    • pp.201-205
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    • 2016
  • Gongylidioides kaihotsui Saito and Ono, 2001 and Mermessus naniwaensis (Oi, 1960) of Linyphiidae are described from Korea with taxonomic illustrations. The genera Gongylidioides Oi, 1960 and Mermessus O.P.-Cambridge, 1899 are newly recorded genera to Korean spider fauna.

Regiospecific Ring-Opening of Unsymmetrical Epoxides to the Corresponding Less Substituted Alcohols by Newly-Devised Meerwein-Ponndorf-Verley Type Reagents

  • Cha, Jin Soon
    • 통합자연과학논문집
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    • 제5권2호
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    • pp.91-99
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    • 2012
  • A newly-devised Meerwein-Ponndorf-Verley (MPV) reagents, such as diisobutylacetoxyalanes and diisobutylmethanesulfonylalanes, achieved a clean conversion of unsymmetrical epoxides to the corresponding less substituted alcohols. This review covers the recent developments for such a regiospecific ring-opening reaction of epoxides.

New records of freshwater algae from Korea

  • Kim, Jin Hee;Kim, Han Soon
    • Journal of Species Research
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    • 제6권3호
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    • pp.224-231
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    • 2017
  • The present study summarizes the taxonomic description and Korean distribution of 16 taxa that are recorded for the first time in Korea. These taxa classified into Chlorophyceae (Astrephomene gubernaculifera, Botryococcus protuberans, Chlorangiella polychlora, Cylindrocapsa geminella, Kirchneriella contorta var. gracillima, Korshikoviella gracilipes, Oocystis naegelii, O. ovalis, Stylosphaeridium stipitatum), Charophyceae (Cosmarium moniliforme, Cosmocladium constrictum, C. perissum), Xanthophyceae (Tetraedriella tumidulum, T. spnigera), Chrysophyceae (Cyclonexis erinus) and Cyanophyceae (Arthrospira platensis). Among these taxa, six genera including Astrephomene, Chlorangiella, Cosmocladium, Cyclonexis, Stylosphaeridium, and Tetraedriella are newly recorded in Korea.

작업환경오염 화학물질의 유해성조사 방향연구 (Methodological Approach to Surveilance of Chemical Hazards in Worksite Environments)

  • 김오식
    • 한국안전학회지
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    • 제6권1호
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    • pp.39-53
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    • 1991
  • Prior to being prepared the surveilance method and the surveilance system of chemical hazards, the employer's investigastion of the newly-registered-chemical hazards has been to be under obligation along with legislation of the Hazardous Chemicals Control Act and revision of the Industrial Safety & Health Act in 1990. In order to make up the chemical hazards examining plan and to frame the chemical hazards investigating system about the newly-registered chemicals and the existing hazardous chemicals in worksite environments, the KISCO's chemical hazards surveilance program is methodologically researched and presented.

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동화 목재 리노베이션 (Dongwha Creative Renovation)

  • 김개천
    • 한국실내디자인학회:학술대회논문집
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    • 한국실내디자인학회 2005년도 추계학술발표대회 논문집
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    • pp.201-204
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    • 2005
  • In this building, we never use the existing construction methods such as disassembly, destruction and newly construction to ensure the eco-friendly building and to decrease of waste disposal. We make customers feel newly by using minimum materials, pursuing the 'Best Design Using Lower Material' slogan and remodeling the building partially. The line is the most informal type one which is lack of intention. This line formation is harmonized with self-efficiency and completeness that are not required for unnecessary things, and simple unification which has not alternatives or obstacles.

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Carniella coreana sp. nov., a new comb-footed spider (Araneae: Theridiidae) from Korea

  • Kim, Seung Tae;Yoo, Jung Sun
    • Journal of Species Research
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    • 제7권3호
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    • pp.248-250
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    • 2018
  • A new species of Theridiidae, Carniella coreana sp. nov., is described and illustrated from Korea. The male of this newly described species is most similar to Carniella tsurui Ono, 2007 in the general shape of its palp, but can be distinguished by the winding structure of the embolus and broad tipped and twisted embolic apophysis. The genus Carniella Thaler & Steinberger, 1988 is newly recorded to Korean spider fauna.

Notes on Three Species of Laboulbenia Newly Collected in Korea

  • Lee, Yong-Bo;Na, Young-Hee;Baek, Suk-Bae
    • Mycobiology
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    • 제32권4호
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    • pp.194-196
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    • 2004
  • Three species of the Laboulbenia are newly described from Korea. Laboulbenia borealis were collected from the sternites of the back abdomen of Gyrinus japonicus. L. humilis were collected from the upper side of the abdomen of Chlaenius naeviger. L. benjaminii were collected from the abdomen of Stenolophus difficilis.