Institution
Hokkaido University
Education•Sapporo, Hokkaidô, Japan•
About: Hokkaido University is a education organization based out in Sapporo, Hokkaidô, Japan. It is known for research contribution in the topics: Population & Catalysis. The organization has 53925 authors who have published 115403 publications receiving 2651647 citations. The organization is also known as: Hokudai & Hokkaidō daigaku.
Topics: Population, Catalysis, Gene, Transplantation, Virus
Papers published on a yearly basis
Papers
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TL;DR: In vitro toxicity of Ag-NPs at noncytotoxic doses in human hepatoma cell line, HepG2, is evaluated and it is concluded that both "nanosized particle of Ag" as well as "ionic Ag+" contribute to the toxic effects of Ag.
Abstract: Although it has been reported that silver nanoparticles (Ag-NPs) have strong acute toxic effects to various cultured cells, the toxic effects at noncytotoxic doses are still unknown. We, therefore, evaluated in vitro toxicity of Ag-NPs at noncytotoxic doses in human hepatoma cell line, HepG2, based on cell viability assay, micronucleus test, and DNA microarray analysis. We also used polystyrene nanoparticles (PS-NPs) and silver carbonate (Ag2CO3) as test materials to compare the toxic effects with respect to different raw chemical composition and form of silver. The cell viability assay demonstrated that Ag-NPs accelerated cell proliferation at low doses ( 1.0 mg/L) and induced abnormal cellular morphology, displaying cellular shrinkage and acquisition of an irregular shape. In addit...
624 citations
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TL;DR: The apparent decrease in prevalence of H. pylori accompanying the Westernization of Japan may eventually be accompanied by a reduction in the frequency of atrophic gastritis, the precursor lesion of the epidemic form of gastric carcinoma, and ultimately result in a decrease in the incidence of gastRIC carcinoma in Japan.
622 citations
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TL;DR: In this article, a comprehensive review on membrane cleaning in MBRs is presented, and the existing challenges and future research efforts are discussed in order to ensure the development of membrane cleaning toward a more effective and sustainable way in MBR.
621 citations
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TL;DR: In this paper, the authors discuss the interpretation of what we know and what we do not know in a scientific sense, in alphabetical order from activity, band structure, and crystallinity to X-ray photoelectron spectroscopy.
Abstract: Topics, in alphabetical order from “Activity”, “Band structure” and “Crystallinity” to “X-ray photoelectron spectroscopy”, “Yield” and “Z-scheme photocatalysis”, related to photocatalysis and photoelectrochemical reaction are discussed with interpretation of what we know and what we do not know in a scientific sense.
620 citations
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TL;DR: Double‐network (DN) hydrogels with high mechanical strength have been synthesized using the natural polymers bacterial cellulose and gelatin, and an enhancement in the mechanical strength was also observed for the combination of BC with polysaccharides, such as sodium alginate, gellan gum, and ι‐carrageenan.
Abstract: Double-network (DN) hydrogels with high mechanical strength have been synthesized using the natural polymers bacterial cellulose (BC) and gelatin. As-prepared BC contains 90 % water that can easily be squeezed out, with no more recovery in its swelling property. Gelatin gel is brittle and is easily broken into fragments under a modest compression. In contrast, the fracture strength and elastic modulus of a BC–gelatin DN gel under compressive stress are on the order of megapascals, which are several orders of magnitude higher than those of gelatin gel, and almost equivalent to those of articular cartilage. A similar enhancement in the mechanical strength was also observed for the combination of BC with polysaccharides, such as sodium alginate, gellan gum, and ι-carrageenan.
619 citations
Authors
Showing all 54156 results
Name | H-index | Papers | Citations |
---|---|---|---|
Shizuo Akira | 261 | 1308 | 320561 |
Yi Cui | 220 | 1015 | 199725 |
John F. Hartwig | 145 | 714 | 66472 |
Yoshihiro Kawaoka | 139 | 883 | 75087 |
David Y. Graham | 138 | 1047 | 80886 |
Takashi Kadowaki | 137 | 873 | 89729 |
Kazunari Domen | 130 | 908 | 77964 |
Susumu Kitagawa | 125 | 809 | 69594 |
Toshikazu Nakamura | 121 | 732 | 51374 |
Toshio Hirano | 120 | 401 | 55721 |
Li-Jun Wan | 113 | 639 | 52128 |
Wenbin Lin | 113 | 474 | 56786 |
Xiaoming Li | 113 | 1932 | 72445 |
Jinhua Ye | 112 | 658 | 49496 |
Terence Tao | 111 | 606 | 94316 |