Search

Your search keyword '"Asakura, Hiroyuki"' showing total 542 results
Start Over Author "Asakura, Hiroyuki"
542 results on '"Asakura, Hiroyuki"'

1. Virological characteristics of a SARS-CoV-2-related bat coronavirus, BANAL-20-236

Author

Sawa, Hirofumi, Mizuma, Keita, Li, Jingshu, Mimura, Yume, Ohari, Yuma, Tsubo, Tomoya, Ferdous, Zannatul, Shishido, Kenji, Mohri, Hiromi, Iida, Miki, Tsujino, Shuhei, Misawa, Naoko, Usui, Kaoru, Saikruang, Wilaiporn, Lytras, Spyridon, Kawakubo, Shusuke, Nishumura, Luca, Mendoza Tolentino, Jarel Elgin, Li, Wenye, Yo, Maximilian Stanley, Horinaka, Kio, Suganami, Mai, Chiba, Mika, Yoshimura, Ryo, Yasuda, Kyoko, Iida, Keiko, Strange, Adam Patrick, Ohsumi, Naomi, Tanaka, Shiho, Ogawa, Eiko, Okumura, Kaho, Fukuda, Tsuki, Osujo, Rina, Yoshida, Isao, Nakagawa, So, Takaori-Kondo, Akifumi, Shirakawa, Kotaro, Nagata, Kayoko, Nomura, Ryosuke, Horisawa, Yoshihito, Tashiro, Yusuke, Kawai, Yugo, Nakata, Yoshitaka, Futatsusako, Hiroki, Sakamoto, Ayaka, Yasuhara, Naoko, Hashiguchi, Takao, Suzuki, Tateki, Kimura, Kanako, Sasaki, Jiei, Nakajima, Yukari, Yajima, Hisano, Irie, Takashi, Kawabata, Ryoko, Sasaki-Tabata, Kaori, Shimizu, Ryo, Monira Begum, M.S.T., Jonathan, Michael, Mugita, Yuka, Leong, Sharee, Takahashi, Otowa, Ichihara, Kimiko, Ueno, Takamasa, Motozono, Chihiro, Toyoda, Mako, Saito, Akatsuki, Kosaka, Anon, Kawano, Miki, Matsubara, Natsumi, Nishiuchi, Tomoko, Zahradnik, Jiri, Andrikopoulos, Prokopios, Padilla-Blanco, Miguel, Konar, Aditi, Fujita, Shigeru, Plianchaisuk, Arnon, Deguchi, Sayaka, Ito, Hayato, Nao, Naganori, Wang, Lei, Nasser, Hesham, Tamura, Tomokazu, Kimura, Izumi, Kashima, Yukie, Suzuki, Rigel, Suzuki, Saori, Kida, Izumi, Tsuda, Masumi, Oda, Yoshitaka, Hashimoto, Rina, Watanabe, Yukio, Uriu, Keiya, Yamasoba, Daichi, Guo, Ziyi, Hinay, Alfredo A., Jr., Kosugi, Yusuke, Chen, Luo, Pan, Lin, Kaku, Yu, Chu, Hin, Donati, Flora, Temmam, Sarah, Eloit, Marc, Yamamoto, Yuki, Nagamoto, Tetsuharu, Asakura, Hiroyuki, Nagashima, Mami, Sadamasu, Kenji, Yoshimura, Kazuhisa, Suzuki, Yutaka, Ito, Jumpei, Ikeda, Terumasa, Tanaka, Shinya, Matsuno, Keita, Fukuhara, Takasuke, Takayama, Kazuo, and Sato, Kei

Published
2024
Full Text
View/download PDF

2. Convergent evolution of SARS-CoV-2 Omicron subvariants leading to the emergence of BQ.1.1 variant

Author

Ito, Jumpei, Suzuki, Rigel, Uriu, Keiya, Itakura, Yukari, Zahradnik, Jiri, Kimura, Kanako Terakado, Deguchi, Sayaka, Wang, Lei, Lytras, Spyros, Tamura, Tomokazu, Kida, Izumi, Nasser, Hesham, Shofa, Maya, Begum, Mst Monira, Tsuda, Masumi, Oda, Yoshitaka, Suzuki, Tateki, Sasaki, Jiei, Sasaki-Tabata, Kaori, Fujita, Shigeru, Yoshimatsu, Kumiko, Ito, Hayato, Nao, Naganori, Asakura, Hiroyuki, Nagashima, Mami, Sadamasu, Kenji, Yoshimura, Kazuhisa, Yamamoto, Yuki, Nagamoto, Tetsuharu, Kuramochi, Jin, Schreiber, Gideon, Saito, Akatsuki, Matsuno, Keita, Takayama, Kazuo, Hashiguchi, Takao, Tanaka, Shinya, Fukuhara, Takasuke, Ikeda, Terumasa, and Sato, Kei

Published
2023
Full Text
View/download PDF

3. Virological characteristics of the SARS-CoV-2 XBB variant derived from recombination of two Omicron subvariants

Author

Tamura, Tomokazu, Ito, Jumpei, Uriu, Keiya, Zahradnik, Jiri, Kida, Izumi, Anraku, Yuki, Nasser, Hesham, Shofa, Maya, Oda, Yoshitaka, Lytras, Spyros, Nao, Naganori, Itakura, Yukari, Deguchi, Sayaka, Suzuki, Rigel, Wang, Lei, Begum, MST Monira, Kita, Shunsuke, Yajima, Hisano, Sasaki, Jiei, Sasaki-Tabata, Kaori, Shimizu, Ryo, Tsuda, Masumi, Kosugi, Yusuke, Fujita, Shigeru, Pan, Lin, Sauter, Daniel, Yoshimatsu, Kumiko, Suzuki, Saori, Asakura, Hiroyuki, Nagashima, Mami, Sadamasu, Kenji, Yoshimura, Kazuhisa, Yamamoto, Yuki, Nagamoto, Tetsuharu, Schreiber, Gideon, Maenaka, Katsumi, Hashiguchi, Takao, Ikeda, Terumasa, Fukuhara, Takasuke, Saito, Akatsuki, Tanaka, Shinya, Matsuno, Keita, Takayama, Kazuo, and Sato, Kei

Published
2023
Full Text
View/download PDF

7. Virological characteristics of a SARS-CoV-2-related bat coronavirus, BANAL-20-236

Author

Fujita, Shigeru, primary, Plianchaisuk, Arnon, additional, Deguchi, Sayaka, additional, Ito, Hayato, additional, Nao, Naganori, additional, Wang, Lei, additional, Nasser, Hesham, additional, Tamura, Tomokazu, additional, Kimura, Izumi, additional, Kashima, Yukie, additional, Suzuki, Rigel, additional, Suzuki, Saori, additional, Kida, Izumi, additional, Tsuda, Masumi, additional, Oda, Yoshitaka, additional, Hashimoto, Rina, additional, Watanabe, Yukio, additional, Uriu, Keiya, additional, Yamasoba, Daichi, additional, Guo, Ziyi, additional, Hinay, Alfredo A., additional, Kosugi, Yusuke, additional, Chen, Luo, additional, Pan, Lin, additional, Kaku, Yu, additional, Chu, Hin, additional, Donati, Flora, additional, Temmam, Sarah, additional, Eloit, Marc, additional, Yamamoto, Yuki, additional, Nagamoto, Tetsuharu, additional, Asakura, Hiroyuki, additional, Nagashima, Mami, additional, Sadamasu, Kenji, additional, Yoshimura, Kazuhisa, additional, Suzuki, Yutaka, additional, Sawa, Hirofumi, additional, Mizuma, Keita, additional, Li, Jingshu, additional, Mimura, Yume, additional, Ohari, Yuma, additional, Tsubo, Tomoya, additional, Ferdous, Zannatul, additional, Shishido, Kenji, additional, Mohri, Hiromi, additional, Iida, Miki, additional, Tsujino, Shuhei, additional, Misawa, Naoko, additional, Usui, Kaoru, additional, Saikruang, Wilaiporn, additional, Lytras, Spyridon, additional, Kawakubo, Shusuke, additional, Nishumura, Luca, additional, Mendoza Tolentino, Jarel Elgin, additional, Li, Wenye, additional, Yo, Maximilian Stanley, additional, Horinaka, Kio, additional, Suganami, Mai, additional, Chiba, Mika, additional, Yoshimura, Ryo, additional, Yasuda, Kyoko, additional, Iida, Keiko, additional, Strange, Adam Patrick, additional, Ohsumi, Naomi, additional, Tanaka, Shiho, additional, Ogawa, Eiko, additional, Okumura, Kaho, additional, Fukuda, Tsuki, additional, Osujo, Rina, additional, Yoshida, Isao, additional, Nakagawa, So, additional, Takaori-Kondo, Akifumi, additional, Shirakawa, Kotaro, additional, Nagata, Kayoko, additional, Nomura, Ryosuke, additional, Horisawa, Yoshihito, additional, Tashiro, Yusuke, additional, Kawai, Yugo, additional, Nakata, Yoshitaka, additional, Futatsusako, Hiroki, additional, Sakamoto, Ayaka, additional, Yasuhara, Naoko, additional, Hashiguchi, Takao, additional, Suzuki, Tateki, additional, Kimura, Kanako, additional, Sasaki, Jiei, additional, Nakajima, Yukari, additional, Yajima, Hisano, additional, Irie, Takashi, additional, Kawabata, Ryoko, additional, Sasaki-Tabata, Kaori, additional, Shimizu, Ryo, additional, Monira Begum, M.S.T., additional, Jonathan, Michael, additional, Mugita, Yuka, additional, Leong, Sharee, additional, Takahashi, Otowa, additional, Ichihara, Kimiko, additional, Ueno, Takamasa, additional, Motozono, Chihiro, additional, Toyoda, Mako, additional, Saito, Akatsuki, additional, Kosaka, Anon, additional, Kawano, Miki, additional, Matsubara, Natsumi, additional, Nishiuchi, Tomoko, additional, Zahradnik, Jiri, additional, Andrikopoulos, Prokopios, additional, Padilla-Blanco, Miguel, additional, Konar, Aditi, additional, Ito, Jumpei, additional, Ikeda, Terumasa, additional, Tanaka, Shinya, additional, Matsuno, Keita, additional, Fukuhara, Takasuke, additional, Takayama, Kazuo, additional, and Sato, Kei, additional

Published
2024
Full Text
View/download PDF

8. The SARS-CoV-2 spike S375F mutation characterizes the Omicron BA.1 variant

Author

Kimura, Izumi, Yamasoba, Daichi, Nasser, Hesham, Zahradnik, Jiri, Kosugi, Yusuke, Wu, Jiaqi, Nagata, Kayoko, Uriu, Keiya, Tanaka, Yuri L., Ito, Jumpei, Shimizu, Ryo, Tan, Toong Seng, Butlertanaka, Erika P., Asakura, Hiroyuki, Sadamasu, Kenji, Yoshimura, Kazuhisa, Ueno, Takamasa, Takaori-Kondo, Akifumi, Schreiber, Gideon, Toyoda, Mako, Shirakawa, Kotaro, Irie, Takashi, Saito, Akatsuki, Nakagawa, So, Ikeda, Terumasa, and Sato, Kei

Published
2022
Full Text
View/download PDF

9. Atomically Dispersed Pt1–Polyoxometalate Catalysts: How Does Metal–Support Interaction Affect Stability and Hydrogenation Activity?

Author

Zhang, Bin, Sun, Geng, Ding, Shipeng, Asakura, Hiroyuki, Zhang, Jia, Sautet, Philippe, and Yan, Ning

Subjects
Inorganic Chemistry, Chemical Sciences, General Chemistry, Chemical sciences, Engineering
Abstract

Unlike nanostructured metal catalysts, supported single-atom catalysts (SACs) contain only atomically dispersed metal atoms, hinting at much more pronounced metal-support effects. Herein, we take a series of polyoxometalate-supported Pt catalysts as examples to quantitatively investigate the stability of Pt atoms on oxide supports and how the Pt-support interaction influences the catalytic performance. For this entire series, we show that the Pt atoms prefer to stay at a 4-fold hollow site of one polyoxometalate molecule and that the least adsorption energy to obtain sintering-resistant Pt SACs is 5.50 eV, which exactly matches the cohesive energy of bulk Pt metal. Further, we compared their catalytic performance in several hydrogenation reactions and simulated the reaction pathways of propene hydrogenation by density functional theory (DFT) calculations. Both experimental and theoretical approaches suggest that despite the Pt1-support interactions being different, the reaction pathways of various Pt1-polyoxometalate catalysts are very similar and their effective reaction barriers are close to each other and as low as 24 kJ/mol, indicating the possibility of obtaining SACs with improved stability without compromising activity. DFT calculations show that all reaction elementary steps take place only on the Pt atom without involving neighboring O atoms and that hydrogenation proceeds from the molecularly adsorbed H2 species. Pt SACs give a weaker H2 adsorption energy than Pt clusters or surfaces, resulting in small adsorption equilibrium constants and small apparent activation barriers, which agree between experiment and theory.

Published
2019

10. Attenuated fusogenicity and pathogenicity of SARS-CoV-2 Omicron variant

Author

Suzuki, Rigel, Yamasoba, Daichi, Kimura, Izumi, Wang, Lei, Kishimoto, Mai, Ito, Jumpei, Morioka, Yuhei, Nao, Naganori, Nasser, Hesham, Uriu, Keiya, Kosugi, Yusuke, Tsuda, Masumi, Orba, Yasuko, Sasaki, Michihito, Shimizu, Ryo, Kawabata, Ryoko, Yoshimatsu, Kumiko, Asakura, Hiroyuki, Nagashima, Mami, Sadamasu, Kenji, Yoshimura, Kazuhisa, Sawa, Hirofumi, Ikeda, Terumasa, Irie, Takashi, Matsuno, Keita, Tanaka, Shinya, Fukuhara, Takasuke, and Sato, Kei

Published
2022
Full Text
View/download PDF

11. Enhanced fusogenicity and pathogenicity of SARS-CoV-2 Delta P681R mutation

Author

Saito, Akatsuki, Irie, Takashi, Suzuki, Rigel, Maemura, Tadashi, Nasser, Hesham, Uriu, Keiya, Kosugi, Yusuke, Shirakawa, Kotaro, Sadamasu, Kenji, Kimura, Izumi, Ito, Jumpei, Wu, Jiaqi, Iwatsuki-Horimoto, Kiyoko, Ito, Mutsumi, Yamayoshi, Seiya, Loeber, Samantha, Tsuda, Masumi, Wang, Lei, Ozono, Seiya, Butlertanaka, Erika P., Tanaka, Yuri L., Shimizu, Ryo, Shimizu, Kenta, Yoshimatsu, Kumiko, Kawabata, Ryoko, Sakaguchi, Takemasa, Tokunaga, Kenzo, Yoshida, Isao, Asakura, Hiroyuki, Nagashima, Mami, Kazuma, Yasuhiro, Nomura, Ryosuke, Horisawa, Yoshihito, Yoshimura, Kazuhisa, Takaori-Kondo, Akifumi, Imai, Masaki, Tanaka, Shinya, Nakagawa, So, Ikeda, Terumasa, Fukuhara, Takasuke, Kawaoka, Yoshihiro, and Sato, Kei

Published
2022
Full Text
View/download PDF

14. Virological characteristics of the SARS-CoV-2 BA.2.86 variant

Author

Tamura, Tomokazu, primary, Mizuma, Keita, additional, Nasser, Hesham, additional, Deguchi, Sayaka, additional, Padilla-Blanco, Miguel, additional, Oda, Yoshitaka, additional, Uriu, Keiya, additional, Tolentino, Jarel E.M., additional, Tsujino, Shuhei, additional, Suzuki, Rigel, additional, Kojima, Isshu, additional, Nao, Naganori, additional, Shimizu, Ryo, additional, Wang, Lei, additional, Tsuda, Masumi, additional, Jonathan, Michael, additional, Kosugi, Yusuke, additional, Guo, Ziyi, additional, Hinay, Alfredo A., additional, Putri, Olivia, additional, Kim, Yoonjin, additional, Tanaka, Yuri L., additional, Asakura, Hiroyuki, additional, Nagashima, Mami, additional, Sadamasu, Kenji, additional, Yoshimura, Kazuhisa, additional, Saito, Akatsuki, additional, Ito, Jumpei, additional, Irie, Takashi, additional, Tanaka, Shinya, additional, Zahradnik, Jiri, additional, Ikeda, Terumasa, additional, Takayama, Kazuo, additional, Matsuno, Keita, additional, Fukuhara, Takasuke, additional, and Sato, Kei, additional

Published
2024
Full Text
View/download PDF

20. Oxygen Storage Property and Catalytic Performance of Ti-Doped FeNbO4

Author

Iwasaki, Chisa, Yoshiyama, Yuji, Hosokawa, Saburo, Nagata, Naoto, Dejima, Ayano, Onishi, Kenya, Maeda, Raizo, Naniwa, Shimpei, Iguchi, Shoji, Asakura, Hiroyuki, Teramura, Kentaro, and Tanaka, Tsunehiro

Abstract

Oxygen storage materials (OSMs) have potential applications in various fields, including catalysis, wherein a high oxygen storage capacity is desired because lattice oxygen and oxygen vacancies can act as reactants in catalytic reactions. In this study, we demonstrated that orthorhombic FeNbO4has a high oxygen storage capacity, making it an effective catalyst for NO reduction and CO oxidation. FeNbO4could release and store lattice oxygen via reversible topotactic transformations while maintaining cation ordering in its crystal structure. The lattice oxygen release properties were significantly enhanced by doping FeNbO4with Ti at the Nb sites. The oxygen storage capacity of Ti-doped FeNbO4was further improved by reduction and reoxidation pretreatments at 773 K, in which sufficient lattice oxygen was released under H2atmosphere and reoxidized under O2atmosphere. In NO reduction by CO in the presence of O2, Ti-doped FeNbO4having high oxygen storage performance exhibited an excellent catalytic activity comparable to that of Pt/Al2O3, despite the absence of platinum group metals (PGMs). This could be explained by the participation of oxygen vacancies in the reaction via the Mars–van Krevelen mechanism, as revealed by temperature-programmed reactions with NO and CO. We propose that a catalyst design utilizing the highly reactive lattice oxygen and oxygen vacancies in OSMs can circumvent the need for expensive PGMs.

Published
2024
Full Text
View/download PDF

40. Ruthenium and palladium bimetallic nanoparticles achieving functional parity with a rhodium cocatalyst for TiO2-photocatalyzed ring hydrogenation of benzoic acid.

Author

Nakanishi, Kousuke, Araki, Sakae, Nomoto, Kousuke, Onoue, Yuichi, Yagi, Ryosuke, Asakura, Hiroyuki, Tanaka, Atsuhiro, Tanaka, Tsunehiro, and Kominami, Hiroshi

Abstract

Our previous study showed that a rhodium (Rh) cocatalyst is indispensable for ring hydrogenation of benzoic acid over a titanium(IV) oxide (TiO2) photocatalyst. In this study, we explored ring hydrogenation under an Rh-free condition by using two kinds of cocatalyst that were inactive for this reaction when used solely. Cyclohexanecarboxylic acid as the ring hydrogenation product was successfully obtained when ruthenium (Ru) and palladium (Pd) were simultaneously loaded on TiO2, indicating that this bimetallic system can be used in place of an Rh cocatalyst in ring hydrogenation. The state and distribution of Ru and Pd in particles loaded on TiO2 were investigated by transmission electron microscopy, X-ray photon spectroscopy, and X-ray absorption near edge structure analysis. The functions of Ru and Pd as cocatalysts are discussed on the basis of results of characterization and activity tests. The effects of different contents of Ru and Pd in Ru–Pd/TiO2 prepared by a two-step photodeposition method on catalytic activity and the features of the reaction system were investigated in detail. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

44. Virological characteristics of the SARS-CoV-2 Omicron BA.2.75 variant

Author

Saito, Akatsuki, primary, Tamura, Tomokazu, additional, Zahradnik, Jiri, additional, Deguchi, Sayaka, additional, Tabata, Koshiro, additional, Anraku, Yuki, additional, Kimura, Izumi, additional, Ito, Jumpei, additional, Yamasoba, Daichi, additional, Nasser, Hesham, additional, Toyoda, Mako, additional, Nagata, Kayoko, additional, Uriu, Keiya, additional, Kosugi, Yusuke, additional, Fujita, Shigeru, additional, Shofa, Maya, additional, Monira Begum, MST, additional, Shimizu, Ryo, additional, Oda, Yoshitaka, additional, Suzuki, Rigel, additional, Ito, Hayato, additional, Nao, Naganori, additional, Wang, Lei, additional, Tsuda, Masumi, additional, Yoshimatsu, Kumiko, additional, Kuramochi, Jin, additional, Kita, Shunsuke, additional, Sasaki-Tabata, Kaori, additional, Fukuhara, Hideo, additional, Maenaka, Katsumi, additional, Yamamoto, Yuki, additional, Nagamoto, Tetsuharu, additional, Asakura, Hiroyuki, additional, Nagashima, Mami, additional, Sadamasu, Kenji, additional, Yoshimura, Kazuhisa, additional, Ueno, Takamasa, additional, Schreiber, Gideon, additional, Takaori-Kondo, Akifumi, additional, Shirakawa, Kotaro, additional, Sawa, Hirofumi, additional, Irie, Takashi, additional, Hashiguchi, Takao, additional, Takayama, Kazuo, additional, Matsuno, Keita, additional, Tanaka, Shinya, additional, Ikeda, Terumasa, additional, Fukuhara, Takasuke, additional, and Sato, Kei, additional

Published
2022
Full Text
View/download PDF

46. Virological characteristics of the SARS-CoV-2 Omicron BA.2 subvariants, including BA.4 and BA.5

Author

Kimura, Izumi, primary, Yamasoba, Daichi, additional, Tamura, Tomokazu, additional, Nao, Naganori, additional, Suzuki, Tateki, additional, Oda, Yoshitaka, additional, Mitoma, Shuya, additional, Ito, Jumpei, additional, Nasser, Hesham, additional, Zahradnik, Jiri, additional, Uriu, Keiya, additional, Fujita, Shigeru, additional, Kosugi, Yusuke, additional, Wang, Lei, additional, Tsuda, Masumi, additional, Kishimoto, Mai, additional, Ito, Hayato, additional, Suzuki, Rigel, additional, Shimizu, Ryo, additional, Begum, MST Monira, additional, Yoshimatsu, Kumiko, additional, Kimura, Kanako Terakado, additional, Sasaki, Jiei, additional, Sasaki-Tabata, Kaori, additional, Yamamoto, Yuki, additional, Nagamoto, Tetsuharu, additional, Kanamune, Jun, additional, Kobiyama, Kouji, additional, Asakura, Hiroyuki, additional, Nagashima, Mami, additional, Sadamasu, Kenji, additional, Yoshimura, Kazuhisa, additional, Shirakawa, Kotaro, additional, Takaori-Kondo, Akifumi, additional, Kuramochi, Jin, additional, Schreiber, Gideon, additional, Ishii, Ken J., additional, Hashiguchi, Takao, additional, Ikeda, Terumasa, additional, Saito, Akatsuki, additional, Fukuhara, Takasuke, additional, Tanaka, Shinya, additional, Matsuno, Keita, additional, and Sato, Kei, additional

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results