Institution
Sophia University
Education•Tokyo, Japan•
About: Sophia University is a education organization based out in Tokyo, Japan. It is known for research contribution in the topics: Nonlinear system & Catalysis. The organization has 4986 authors who have published 7657 publications receiving 106567 citations. The organization is also known as: Jōchi Daigaku.
Topics: Nonlinear system, Catalysis, Thin film, Adaptive control, Ion
Papers published on a yearly basis
Papers
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TL;DR: This recoil effect of the carbon 1s photoelectron spectra of methane is evidence for the violation of the Franck-Condon principle which states that neither the positions nor the momenta of the nuclei change during the ionization event.
Abstract: Carbon 1s photoelectron spectra of methane are measured over a photon energy range between 480 eV and 1200 eV. Additional components appear between the individual symmetric stretching vibrational components and are attributed to the excitations of asymmetric stretching and bending vibrations due to recoil of the high-energy photoelectron emission. This recoil effect is the evidence for the violation of the Franck-Condon principle which states that neither the positions nor the momenta of the nuclei change during the ionization event.
107 citations
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01 Jan 2004TL;DR: In this article, a line search algorithm with fibonacci sequence was proposed to find the global maximum power point under the partially shaded condition of a photovoltaic array.
Abstract: This paper deals with maximum power point tracking control of photovoltaic generators Photovoltaic generation systems need maximum power point tracker (MPPT) because the output power depends on the operating voltage and current The authors have proposed the MPPT employing line search algorithm with fibonacci sequence Finding maximum power point is difficult when a photovoltaic array is partially shaded, because two or more maximum power points may appear In this paper, the authors improve the proposed method in order to find the global maximum under the partially shaded condition The improved algorithm has good performance in many experiments In addition, the authors also mention that the compensation of the large output fluctuation caused by the proposed MPPT by using a wind turbine generator as a kind of flywheel energy storage
107 citations
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TL;DR: In this article, the reduction of copper oxide thin films by a hydrogen plasma generated by an atmospheric pressure glow (APG) discharge was investigated, where the reduction occurs first on the surface, then the interface gradually shifts from the surface into the inner region and finally the whole layer is reduced to metallic copper.
Abstract: The reduction of copper oxide thin films by a hydrogen plasma generated by an atmospheric-pressure glow (APG) discharge was investigated. The copper oxide films were prepared by heating the sputtered copper films to C in the air (heat-formed copper oxide) or by sputtering (sputtered copper oxide). Both films were composed of . The reduction occurs first on the surface, then the interface gradually shifts from the surface into the inner region and finally the whole layer is reduced to metallic copper. This process is approximately explained by assuming that the diffusion of the atomic hydrogen in the reduced layer is the rate-deyermining step. By transmission electron microscopic (TEM) observation, a layer of 3 - 5 nm thickness composed of many microcrystals was observed along the surface of the heat-formed copper oxide. After the APG hydrogen plasma treatment, the crystal layer disappeared and the crystalline lattice was re-arranged to form large crystal Cu grains.
106 citations
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TL;DR: High choriolytic (egg envelope digesting) enzyme (HCE) was purified and some biochemical and enzymological properties were examined, and it was suggested that it was a zinc-protease.
Abstract: The hatching enzyme is an embryo-secreted enzyme(s) which digests the egg envelope, allowing the embryo to emerge at the time of hatching. The hatching enzyme of the fish, Oryzias latipes, has recently been found to consist of two kinds of proteases which may digest the inner layer of chorion (egg envelope) cooperatively [Yasumasu, S. et al. (1988) Zool. Sci. 5, 191-195]. In the present study, one of them, high choriolytic (egg envelope digesting) enzyme (HCE) was purified and some biochemical and enzymological properties were examined. The enzyme was a basic protein with a molecular weight of about 24 kDa, and exhibited choriolytic activity as well as proteolytic (caseinolytic) activity. The results of inhibitor studies and metal analyses strongly suggested that it was a zinc-protease. The purified HCE consisted of two probable isomers, HCE-1 and HCE-2. Both of them were markedly similar in amino acid composition, specific activities of choriolysis and proteolysis, and substrate specificity as determined using MCA-peptides. Moreover, they were not separable on SDS-PAGE, electrofocusing PAGE, or ultracentrifugal analysis, but were discriminated only on HPLC with a CM-300 column. Thus, the mixture of HCE-1 and HCE-2 could be regarded as almost a single enzyme, HCE. When it acted on an intact chorion, the purified HCE caused a remarkable swelling of its inner layer with concomitant release of peptides from it. Once the inner layer of chorion was swollen, the enzyme hardly digested it.
106 citations
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TL;DR: In this paper, the authors give an overview of recent progress in microstructure-specific hydrogen mapping techniques, including thermal desorption spectrometry, silver decoration, the hydrogen microprint technique, secondary ion mass spectroscopy, atom probe tomography, neutron radiography, and scanning Kelvin probe.
Abstract: This paper gives an overview of recent progress in microstructure-specific hydrogen mapping techniques. The challenging nature of mapping hydrogen with high spatial resolution, i.e. at the scale of finest microstructural features, led to the development of various methodologies: thermal desorption spectrometry, silver decoration, the hydrogen microprint technique, secondary ion mass spectroscopy, atom probe tomography, neutron radiography, and the scanning Kelvin probe. These techniques have different characteristics regarding spatial and temporal resolution associated with microstructure-sensitive hydrogen detection. Employing these techniques in a site-specific manner together with other microstructure probing methods enables multi-scale, quantitative, three-dimensional, high spatial, and kinetic resolution hydrogen mapping, depending on the specific multi-probe approaches used. Here, we present a brief overview of the specific characteristics of each method and the progress resulting from their...
106 citations
Authors
Showing all 5005 results
Name | H-index | Papers | Citations |
---|---|---|---|
George P. Chrousos | 169 | 1612 | 120752 |
Henning Tiemeier | 108 | 866 | 48604 |
Vincent W. V. Jaddoe | 106 | 1008 | 44269 |
Takaaki Tanaka | 105 | 321 | 41804 |
Israel E. Wachs | 103 | 427 | 32029 |
Masayoshi Watanabe | 95 | 649 | 34819 |
Teruo Okano | 91 | 605 | 28346 |
S. Yamamoto | 86 | 371 | 22637 |
Nick Serpone | 85 | 474 | 30532 |
Tony D. James | 73 | 435 | 21605 |
Akihiko Kikuchi | 71 | 293 | 16970 |
Paul Hofman | 70 | 578 | 28581 |
Kenji Uchino | 64 | 480 | 20447 |
Yasuhisa Sakurai | 63 | 182 | 16709 |
Jan van der Ende | 61 | 196 | 13983 |