• 제목/요약/키워드: industrial materials

검색결과 6,670건 처리시간 0.036초

Combining smart materials for enhancing intelligent systems: initial studies, success cases and research trends

  • Diaz Lantada, A.;Lafont Morgado, P.;Munoz-Guijosa, J.M.;Munoz Sanz, J.L.;Echavarri Otero, J.;Chacon Tanarro, E.;De la Guerra Ochoa, E.
    • Smart Structures and Systems
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    • 제14권4호
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    • pp.517-539
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    • 2014
  • The combined use of smart materials, complementing each others' characteristics and resulting in devices with optimised features, is providing new solutions in many industries. The use of ingenious combinations of smart materials has led to improvements in actuation speed and force, signal-to-noise ratio, sensor precision and unique capabilities such as self-sensing self-healing systems and energy autonomy. This may all give rise to a revival for numerous families of smart materials, for which application proposals had already reached a stationary situation. It may also provide the boost needed for the definitive industrial success of many others. This study focuses on reviewing the proposals, preliminary studies and success cases related to combining smart materials to obtain multifunctional, improved systems. It also examines the most outstanding applications and fields for the combined use of these smart materials. We will also discuss related study areas which warrant further research for the development of novel approaches for demanding applications.

Antifungal Activities of Dimeric Sesquiterpenes, Shizukaols C and F, Isolated from Chloranthus japonicus Sieb.

  • Kang, Tae Hoon;Lee, Yun Me;Lee, Won Jung;Hwang, Eui Il;Park, Ki Duk;Choi, Gyung Ja;Moon, Jae Sun;Park, Ho-Yong;Kim, Sung Uk
    • Journal of Microbiology and Biotechnology
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    • 제27권7호
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    • pp.1272-1275
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    • 2017
  • Two dimeric sesquiterpenes were separated from Chloranthus japonicus Sieb. and identified as shizukaols C and F. They exhibited potent antifungal activities ($MICs=4-16{\mu}g/ml$) in vitro against various plant pathogenic fungi (Pythium ultimum, Phytophthora infestans, Botrytis cinerea, Colletotrichum lagenarium, Alternaria kikuchiana, and Magnaporthe grisea). Shizukaol C showed 88% and 91% protective activities in the greenhouse against Puccinia recondita (wheat leaf rust) and Phytophthora infestans (tomato late blight), respectively, at $100{\mu}g/ml$; shizukaol F exhibited 93% antifungal activity against Puccinia recondita at the same concentration. Therefore, these compounds might serve as interesting candidates for effective antifungal agents.

대구.경북 치재 산업 특화 전략에 관한 연구 (A study on the strategy of Daegu.Kyungbuk Dental materials industrial specialization)

  • 김정숙;김흥덕;박정림
    • 대한치과기공학회지
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    • 제27권1호
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    • pp.155-171
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    • 2005
  • The market of dental materials industry in Korea will over 10 bilians $. If think concern of world market, we can know the possibility of market growth. In Korea, the technique of dental materials industry is low status. Then, special items income advanced countries. But advanced countries had been developed dental materials industry into high beneficial. Otherwise, Daegu Kyungbuk have several good points in dental materials industry. 1st, national dentisty university and three dental lab. college supplies abilitable human resources. 2nd, the possibility of support on basic industrial technology. Finally, the possibility of selection & attraction from many dental company. Then if Daegu Kyungbuk would be select & supported of dental materials Industrial special region, it can be think that will empower local economy, further national constitutional power. So we propose following three points, 1st. the deeper study on righteous of Daegu Kyungbuk dental materials industrial specialization. 2nd. investment on R & D of the region dental materials industrial. final, the support of venture circle.

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열처리를 통한 Ni/Fe계 하이브리드 용사 코팅층의 기계적 특성 및 내식성 향상 (Improvement of the Mechanical Property and Corrosion Resistivity of the Ni-/Fe-based Hybrid Coating Layer using High-velocity Oxygen Fuel Spraying by Heat Treatment)

  • 김정준;이연주;김송이;이종재;김재헌;이석재;임현규;이민하;김휘준;최현주
    • 한국분말재료학회지
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    • 제29권3호
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    • pp.240-246
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    • 2022
  • Novel Ni- and Fe-based alloys are developed to impart improved mechanical properties and corrosion resistance. The designed alloys are manufactured as a powder and deposited on a steel substrate using a high-velocity oxygen-fuel process. The coating layer demonstrates good corrosion resistance, and the thus-formed passive film is beneficial because of the Cr contained in the alloy system. Furthermore, during low-temperature heat treatment, factors that deteriorate the properties and which may arise during high-temperature heat treatment, are avoided. For the heattreated coating layers, the hardness increases by up to 32% and the corrosion resistance improves. The influence of the heat treatment is investigated through various methods and is considered to enhance the mechanical properties and corrosion resistance of the coating layer.