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Institution

Sophia University

EducationTokyo, Japan
About: Sophia University is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Nonlinear system & Adaptive control. The organization has 4986 authors who have published 7657 publications receiving 106567 citations. The organization is also known as: Jōchi Daigaku.


Papers
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Journal ArticleDOI
M Rikukawa1, K Sanui1
TL;DR: In this paper, the authors present an overview of the synthesis, chemical and electrochemical properties, and polymer electrolyte fuel cell applications of new proton-conducting polymers based on hydrocarbon polymers.

1,476 citations

Journal ArticleDOI
TL;DR: In this article, the effect of the sample particle size on the crystal structure and the Curie temperature of BaTiO/sub 3/ powder investigated in the particle size range 0.1 to 1.0 {mu}m was discussed.
Abstract: The authors discuss the effect of the sample particle size on the crystal structure and the Curie temperature of BaTiO/sub 3/ powder investigated in the particle size range 0.1 to 1.0 {mu}m. The transformation from tetragonal to cubic symmetry occurs at a critical particle size of 0.12 {mu}m at room temperature, and the Curie temperature drops below room temperature at the critical particle size.

855 citations

Journal ArticleDOI
TL;DR: This review will explore recent advances in the design and application of excited-state intramolecular proton-transfer (ESIPT) based fluorescent probes.
Abstract: In this review we will explore recent advances in the design and application of excited-state intramolecular proton-transfer (ESIPT) based fluorescent probes. Fluorescence based sensors and imaging agents (probes) are important in biology, physiology, pharmacology, and environmental science for the selective detection of biologically and/or environmentally important species. The development of ESIPT-based fluorescence probes is particularly attractive due to their unique properties, which include a large Stokes shift, environmental sensitivity and potential for ratiometric sensing.

844 citations

Journal ArticleDOI
25 Jul 2000-Langmuir
TL;DR: In this paper, a transparent superhydrophobic thin film with TiO2 photocatalyst was prepared by utilizing a sublimation material and subsequent coating of a (fluoroalkyl)silane.
Abstract: Transparent superhydrophobic thin films with TiO2 photocatalyst were prepared by utilizing a sublimation material and subsequent coating of a (fluoroalkyl)silane. The transparency of the films decreased with increasing TiO2 concentration, which was attributed to the size difference of the starting materials. The film with only 2 wt % TiO2 maintained higher contact angle than the film without TiO2 after 1800-h outdoor exposure, the accumulation of stain being avoided due to TiO2 photocatalysis. The films prepared in this study are the first ones that satisfy the requirements of transparency, superhydrophobicity, and long lifetime simultaneously.

715 citations

Journal ArticleDOI
TL;DR: The results indicate that the stiffness indices of the peripheral muscular arteries are modified appreciably by vasoactive stimuli and that the mechanical properties of the deeper elastic arteries provide sufficiently reliable information about changes caused by aging and arteriosclerosis.
Abstract: The static mechanical properties of major branches of the human arteries (common carotid artery, abdominal aorta, femoral artery, and brachial artery) were studied in 39 subjects, aged 6-81 years, using an ultrasonic phase locked echo tracking system that allows continuous transcutaneous measurement of the diameter of the artery. The stiffness indices were calculated from the relation between systemic blood pressure and arterial diameter. With advancing age there was a significant increase in the diameter of all arteries with a reduction in percentage change in diameter. The stiffness index increased with age in all arteries; however, in the brachial and femoral arteries there was considerable variation in the individual values for a given age. The age associated increase in stiffness was statistically significant only in the common carotid artery and the abdominal aorta. Although the mechanical properties of the peripheral arteries were significantly influenced by the measuring environment, the calculated stiffness indices were less vulnerable to these stimuli in the central arteries. These results indicate that the stiffness indices of the peripheral muscular arteries are modified appreciably by vasoactive stimuli and that the mechanical properties of the deeper elastic arteries provide sufficiently reliable information about changes caused by aging and arteriosclerosis. The new ultrasonic method used appears to be suitable for this analysis.

655 citations


Authors

Showing all 5005 results

NameH-indexPapersCitations
George P. Chrousos1691612120752
Henning Tiemeier10886648604
Vincent W. V. Jaddoe106100844269
Takaaki Tanaka10532141804
Israel E. Wachs10342732029
Masayoshi Watanabe9564934819
Teruo Okano9160528346
S. Yamamoto8637122637
Nick Serpone8547430532
Tony D. James7343521605
Akihiko Kikuchi7129316970
Paul Hofman7057828581
Kenji Uchino6448020447
Yasuhisa Sakurai6318216709
Jan van der Ende6119613983
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20238
202242
2021272
2020299
2019304
2018317