• Title/Summary/Keyword: Double-sided

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Multiple foreign bodies causing an orocutaneous fistula of the cheek

  • Kim, Woo Ju;Kim, Woo Seob;Kim, Han Koo;Bae, Tae Hui
    • Archives of Craniofacial Surgery
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    • v.19 no.2
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    • pp.139-142
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    • 2018
  • Foreign bodies impacted in the maxillofacial region are often a diagnostic challenge. They can be a source of chronic inflammatory reactions and infections leading to the formation of an orocutaneous fistula. Such orocutaneous fistulas cause significant morbidity in most patients, eventually requiring surgery. Recently, we encountered a very rare case of an orocutaneous fistula caused by multiple foreign bodies in the cheek. Precise removal of the foreign bodies was required, and a double-sided anterolateral thigh free flap was used to reconstruct the defect. Surgeons should be aware of the complications of multiple foreign bodies and should be able to diagnose these on careful clinical examination.

5, 10, $20\;{\mu}m$ Silicon Diaphgrams and Features Fabricated without Using An Etch Stop (에치스탑을 사용하지 않고 제작된 5, 10, $20\;{\mu}m$ 두께의 실리콘 박막과 구조물)

  • Kwon, Yonung-Shin;Cho, Dong-Il
    • Proceedings of the KIEE Conference
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    • 1996.07c
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    • pp.1977-1979
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    • 1996
  • Single-crystaIline silicon diaphgrams and features are fabricated without using an etch stop process. The process involves vertical dry etching, double-sided alignment, followed by wet-chemical etching from the back side. The abvantages of this process are that $5{\sim}50{\mu}m$ diaphgrams and features can be fabricated accurately and inexpensively. In addition, since no impurity-based process is introduced, highly uniform and homogenous properties can be achieved

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The Improved Design of Double Sided Coreless PMLSM with Consideration of Rising Winding Temperature

  • An, Ho-Jin;Cho, Gyu-Won;Jang, Ki-Bong;Kim, Gyu-Tak
    • Journal of Electrical Engineering and Technology
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    • v.8 no.1
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    • pp.144-149
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    • 2013
  • This work deals with the optimal design of a coreless PMLSM (Permanent Magnet Linear Synchronous Motor) with consideration of rising winding temperature. The temperature distribution caused by copper loss in the coreless PMLSM was analyzed using a FEM (Finite Element Method). The thrust and current density where the winding temperature reaches the allowable temperature were calculated. The optimal model provides maximum thrust per unit weight.

Back-EMF Characteristic Comparison of Vertical and Halbach Permanent Magnet Linear Generator (수직 및 할박자화를 갖는 영구자석 선형발전기의 역기전력 특성비교)

  • Seo, Sung-Won;Koo, Min-Mo;Choi, Jang-Young;Kim, Kyong-Hwan
    • Proceedings of the KIEE Conference
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    • 2015.07a
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    • pp.794-795
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    • 2015
  • This paper deals with back-EMF characteristic comparison of Vertical and Halbach array double-sided linear generator with coreless type. On the basis of a magnetic vector potential and Maxwell's equations, governing equations are obtained, and magnetic modeling is predicting characteristic analysis by using the Fourier series expansion. And then, we obtained magnetic field solutions and calculated resistance, back-EMF constant. The analytical results used by 2-D cylindrical coordinate system. The analytical method used in this paper is confirmed by comparing with finite element analysis results.

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Behavior of Water Vapor Permeability on Layered System

  • Oh, Ae-Gyeong
    • Fashion & Textile Research Journal
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    • v.11 no.2
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    • pp.359-362
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    • 2009
  • This study investigates the behavior of water vapor permeability of a layered system to find out a comfortable combination of a layered system for outdoor activities and examines the water vapor permeability of various types of outdoor clothing fabrics. The layered system includes the base layer such as sportswool and polyester/cotton fabrics, the middle layer such as single and double sided fleece fabrics, and the shell layer such as polyurethane-coated, PTFE-laminated and microfiber fabrics in this experiment. Results show that the layered system was applied, it was working together as a whole having some influence on each other layer, though every layer offered varying degree of water vapor permeability. Water vapor permeability of layered system exactly followed the same trend as the shell layer, which is all vapor permeable water repellent fabrics as a single layer. The rate of water vapor transfer through a layered system is mainly related to the type of vapor permeable water repellent fabrics used for the shell layer.

Design and Analysis of AFPM Coreless Motor for Electric Scooter

  • Kim, Chul-Ho;Oh, Chul-Soo
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.3B no.2
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    • pp.90-96
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    • 2003
  • This paper deals with the design and the characteristic analysis of a coreless axial flux permanent magnet (AFPM) motor. Because a direct-drive wheel motor is easily derived from it, the AFPM motor is very suitable for application in an electric scooter. Compared to a conventional motor of the same size and weight, the AFPM motor is proven to have more power and torque per unit weight. In this paper, an AFPM coreless motor with a double-sided rotor disk equipped with Nd-Fe-B rare earth magnets is designed and a prototype of the motor is manufactured, which will be properly applied for the low-speed, and high-torque direct drive required for the electric scooter. The manufactured prototype of the motor has a rating of 300W, 510rpm, 5.6Nm, and 85% efficiency.

High Temperature Superconducting Pseudo-Lumped Element Bandpass Filter

  • Min, Byoung-Chul;Choi, Young-Hwan;Kim, Hong-Teuk;Moon, Seung-Hyun;Lee, Seung-Min;Oh, Byung-Du
    • Progress in Superconductivity
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    • v.1 no.1
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    • pp.42-46
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    • 1999
  • A high-temperature superconducting 1.78 GHz bandpass filter, designed for PCS applications, is presented. The structure consists of microstrip pseudo-lumped elements, which enables miniaturization of the filter. A 5-pole microstrip filter could be realized on a 37 mm $\times$ 9 mm $LaAlO_3$ substrate, using double-sided high-temperature superconducting $YBa_2Cu_3O{7-\delta}$ thin film. This filter showed 0.7 % fractional bandwidth, 0.3 dB insertion loss, and 12 dB return loss in the passband at 60 K.

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The Stress Analysis of Semiconductor Package (반도체 패키지의 응력 해석)

  • Lee, Jeong-Ick
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.17 no.3
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    • pp.14-19
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    • 2008
  • In the semiconductor IC(Integrated Circuit) package, the top surface of silicon chip is directly attached to the area of the leadframe with a double-sided adhesive layer, in which the base layer have the upper adhesive layer and the lower adhesive layer. The IC package structure has been known to encounter a thermo-mechanical failure mode such as delamination. This failure mode is due to the residual stress on the adhesive surface of silicon chip and leadframe in the curing-cooling process. The induced thermal stress in the curing process has an influence on the cooling residual stress on the silicon chip and leadframe. In this paper, for the minimization of the chip surface damage, the adhesive topologies on the silicon chip are studied through the finite element analysis(FEA).

Zoonotic Potential of Staphylococcus schleiferi Through Adherence to Canine and Human Corneocytes

  • Kim, Youngin;Bae, Seulgi;OH, Taeho
    • Journal of Veterinary Clinics
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    • v.34 no.3
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    • pp.225-227
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    • 2017
  • This study was investigated the zoonotic possibility of Staphylococcus schleiferi by adherence to both canine and human corneocytes. Staphylococcus pseudintermedius, Staphylococcus aureus, and S. schleiferi were prepared and canine and human corneocytes were collected via double-sided tape. Adhesion to human corneocytes was higher for S. schleiferi than S. pseudintermedius but highest for S. aureus. Regarding the canine corneocytes, S. schleiferi was the least adhesive strain. Furthermore, S. pseudintermedius adhered to the entire surface of both human and canine corneocytes. S. aureus and S. schleiferi, however, adhered to the corneocyte peripheries. Thus, S. schleiferi may have zoonotic potential and the potential is higher than S. pseudintermedius.