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Institution

Chung-Ang University

EducationSeoul, South Korea
About: Chung-Ang University is a education organization based out in Seoul, South Korea. It is known for research contribution in the topics: Population & Thin film. The organization has 13381 authors who have published 26978 publications receiving 416735 citations. The organization is also known as: CAU & Chung.
Topics: Population, Thin film, Apoptosis, Graphene, Cancer


Papers
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Journal ArticleDOI
TL;DR: SNTPs exhibited superior quality SERS spectra in vivo due to well-sustained nanogap junctions inside the SNTs, when compared to simply using AuNPs without any silica encapsulation, as well as a robust intracellular optical pH sensor with single nanotube sensitivity.
Abstract: A subnanometer gap-separated linear chain gold nanoparticle (AuNP) silica nanotube peapod (SNTP) was fabricated by self-assembly. The geometrical configurations of the AuNPs inside the SNTPs were managed in order to pose either a single-line or a double-line nanostructure by controlling the diameters of the AuNPs and the orifice in the silica nanotubes (SNTs). The AuNPs were internalized and self-assembled linearly inside the SNTs by capillary force using a repeated wet–dry process on a rocking plate. Transmission electron microscopy (TEM) images clearly indicated that numerous nanogap junctions with sub-1-nm distances were formed among AuNPs inside SNTs. Finite-dimension time domain (FDTD) calculations were performed to estimate the electric field enhancements. Polarization-dependent surface-enhanced Raman scattering (SERS) spectra of bifunctional aromatic linker p-mercaptobenzoic acid (p-MBA)-coated AuNP-embedded SNTs supported the linearly aligned nanogaps. We could demonstrate a silica wall-protected ...

98 citations

Journal ArticleDOI
TL;DR: In this article, the impact of nanoparticles on the performance enhancement of PV/T systems has been analyzed, and it has been concluded that the organic fluids are better base fluids than water, and nanofluids with better thermal conductivity enhance the maximum efficiency once optimum size, volume fraction and correct concentration ratio of nanoparticles are selected.
Abstract: The aim of this study is to present a critical review of the impact of nanofluids on the performance enhancement of PV/T systems. The review has analyzed the effects of nanoparticle type, size, volume fraction and concentration ratio on the performance of PV/T systems. Furthermore, the type of base-fluid, flow channels, and flow types have also been studied comprehensively in relation to nanofluids characteristics and properties. Results have shown that the inclusion of nanofluid enhances the overall efficiency of the PV/T systems. It has been concluded that the organic fluids are better base fluids than water, and nanofluids with better thermal conductivity enhance the maximum efficiency once optimum size, volume fraction and correct concentration ratio of nanofluid are selected. Moreover, straight microchannel and the addition of Fe3O4, SiC and TiO2 nanofluids with low concentration ratio provides better efficiency and flexibility. The motive beyond that is the micro-channels turbulent flow occurs at low Reynolds number. Accordingly, maximum efficiency can be obtained at higher velocity laminar flows. Increasing the velocity to higher ranges of turbulent flow does not allow proper time for heat transfer and can cause clustering of nanoparticles. The observations of this review are proposed to PV/T systems and it is helpful for the thermal system design practitioners towards achieving high efficiency in any thermal system.

98 citations

Journal ArticleDOI
01 Jun 2007-Eye
TL;DR: The present study is the first to demonstrate that CD34+M NCs, c-Kit+MNCs and their modulator are elevated in diabetic retinopathy patients, and it is possible that circulating EPCs and serum Epo, VEGF, and SP may be involved in the progression of diabetic Retinopathy.
Abstract: Involvement of circulating endothelial progenitor cells and vasculogenic factors in the pathogenesis of diabetic retinopathy

98 citations

Journal ArticleDOI
TL;DR: The Pluronic F127 polymeric micelles are an effective delivery system for the oral administration of genistein and the bioavailability ofgenistein-loaded polymeric mouselles was better than genisteIn powder.
Abstract: The purpose of the present study was to determine whether Pluronic F127 polymeric micelles could improve the oral bioavailability of a poor water-soluble drug, such as genistein. Genistein is a phytoestrogen that has estrogenic activity. F127 triblock copolymer consists of PEO100-PPO65-PEO100. Genistein was incorporated in the Pluronic F127 polymeric micelles by a solid dispersion method. The genistein release of genistein-loaded polymeric micelles was studiedin vitro (in pH 1.2 and pH 6.8). And the oral bioavailabilities of genistein powder and genistein-loaded micelles were estimated at a dose of 4.0 mg/kg as genistein in rats. Drug loading amount and drug loading efficiency were 11.18% and 97.41%, respectively. The average size of the genistein-loaded polymeric micelles was 27.76 nm. And genistein release of the genistein-loaded polymeric micellesin vitro was 58% (pH 1.2) and 82% (pH 6.8). The bioavailability of genistein-loaded polymeric micelles was better than genistein powder. Consequently, Pluronic F127 polymeric micelles are an effective delivery system for the oral administration of genistein.

98 citations

Journal ArticleDOI
TL;DR: A new azophenol type chromogenic ionophore based on the p-tert-butylcalix[4]arenediazacrown ether exhibited a pronouncedly selective chromogenic behaviour toward Hg2+ ions among the surveyed guests of alkali, alkaline earth, transition and heavy metal ions in liquid-liquid extraction experiments.

98 citations


Authors

Showing all 13500 results

NameH-indexPapersCitations
Carl Nathan13543091535
Scheffer C.G. Tseng9333329213
Richard L. Sidman9329732009
H. Yamaguchi9037533135
Ajith Abraham86111331834
Byung Ihn Choi7860924925
Stefano Soatto7849923597
J. H. Kim7356623052
Daehee Kang7242223959
Lance M. McCracken7228118897
Masanobu Shinozuka6945621961
Seung U. Kim6435514269
Sug Hyung Lee6445421552
Seung U. Kim6312911983
Nam Jin Yoo6340312692
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202362
2022204
20212,535
20202,301
20192,140
20181,991