• Title/Summary/Keyword: 홀효과

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Evaluation of Pavement Rehabilitation Using Precast Concrete Slabs and Slab Connection methods (보수용 조립식 콘크리트 포장 적용성 및 슬래브 접합 방식 분석)

  • Cho, Young-Kyo;Oh, Han-Jin;Hwang, Ju-Hwan;Kim, Seong-Min;Park, Sung-Ki
    • International Journal of Highway Engineering
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    • v.12 no.4
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    • pp.165-174
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    • 2010
  • This study was conducted to evaluate the feasibility of expedite repairing of concrete pavements using precast concrete pavement method and to investigate the effectiveness of slab connection methods. In the demonstration construction, four slabs of jointed concrete pavements were replaced with the precast slabs. First, precast concrete slabs were designed and fabricated, then existing slabs were cut and removed, and finally precast slabs were installed. The slabs were leveled and pockets, holes, and space between the slab bottom and the underlying layer were grouted. From the demonstration construction, details about the design and construction of the precast pavements for repairing of pavements were evaluated. In addition, the slab connection methods such as pocket and hole connection methods were applied in the construction and the slab curling behaviors at the joints that include those connection methods were compared. The results showed that both slab connection methods were applicable, and the hole connection method was superior.

비즈니스 인사이드 - 브라더, 새로운 레이저·잉크젯 모델 7종 공개

  • Im, Nam-Suk
    • 프린팅코리아
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    • v.13 no.9
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    • pp.92-92
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    • 2014
  • 브라더인터내셔널코리아(지사장 마에다 히로시, www.brother-korea.com)는 지난 8월 21일 서울 역삼동 메리츠타워 지하2층 아모리스홀에서 기자간담회를 열고 뛰어난 기능과 내구성을 갖추고 비용 절감 효과까지 더한 최신 프린터와 복합기 7종을 출시한다고 밝혔다.

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Properties of Exchange Bias Coupling Field and Coercivity Using the Micron-size Holes Formation Inside GMR-SV Film (GMR-SV 박막내 미크론 크기의 홀 형성을 이용한 교환결합세기와 보자력 특성연구)

  • Bolormaa, Munkhbat;Khajidmaa, Purevdorj;Hwang, Do-Guwn;Lee, Sang-Suk;Lee, Won-Hyung;Rhee, Jang-Roh
    • Journal of the Korean Magnetics Society
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    • v.25 no.4
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    • pp.117-122
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    • 2015
  • The holes with a diameter of $35{\mu}m$ inside the GMR-SV (giant magnetoresistance-spin valve) film were patterned by using the photolithography process and ECR (electron cyclotron resonance) Ar-ion milling. From the magnetoresistance curves of the GMR-SV film with holes measuring by 4-electrode method, the MR (magnetoresistance ratio) and MS (magnetic sensitivity) are almost same as the values of initial states. On other side hand, the $H_{ex}$ (exchange bias coupling field) and $H_c$ (coercivity) dominantly increased from 120 Oe and 10 Oe to 190 Oe and 41 Oe as increment of the number of holes inside GMR-SV film respectively. These results were shown to be attributed to major effect of EMD (easy magnetic domian) having a region positioned between two holes perpendicular to the sensing current. On the basis of this study, the fabrication of GMR-SV applying to the hole formation improved the magnetoresistance properties having the thermal stability and durability of bio-device.