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Osthol attenuates hepatic steatosis via decreased triglyceride synthesis not by insulin resistance

Title
Osthol attenuates hepatic steatosis via decreased triglyceride synthesis not by insulin resistance
Author
전대원
Keywords
Printed electronics; Poly(N-vinylpyrrolidone); Molecular weight; Flash light sintering; In-situ monitoring; Copper; Nanoparticles
Issue Date
2014-11
Publisher
ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Citation
THIN SOLID FILMS, 권: 570, 페이지: 114-122
Abstract
The effect of poly (N-vinylpyrrolidone) (PVP) molecular weight (MW) on the flash light sintering of copper nanopaste was investigated. The copper nanopaste was coated on polyimide substrates using doctor blade method. PVP was used as reducing agent to functionalize the copper nanoparticles during flash light sintering process. To find the optimum sintering conditions of copper nanoparticles, the various MWs of PVP (10 000, 40 000 and 55 000) were used and the flash light irradiation energy was varied from 7.5 J/cm(2) to 17.5 J/cm(2). Meanwhile, other flash light irradiation conditions (pulse numbers, on-time and off-time durations) and amounts of PVP were fixed to clarify the effect of the PVP MW. As the results, it was found that flash light sintered copper nanofilms have the resistivity of 54 mu Omega cm without any damages to the polymer substrate. To characterize the microstructures and transformation crystal phase of the sintered copper nanofilms, scanning electron microscopy and X-ray diffraction were conducted. In order to understand the interaction between oxidized copper and PVP, X-ray photoelectron spectroscopy was analyzed. To observe the electrical conductivity of flash light sintered copper nanofilms, the sheet resistance of the sintered copper nanofilms was measured using a four-point probe method and the sheet resistance changes during the flash light irradiation process were monitored using in-situ monitoring system. (C) 2014 Elsevier B.V. All rights reserved.
URI
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4155365/http://hdl.handle.net/20.500.11754/51546
ISSN
0040-6090
DOI
10.3748/wjg.v20.i33.11753
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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