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629 results on '"Murata, Miho"'

1. The $L^p$-$L^q$ maximal regularity for the Beris-Edward model in the half-space

Author

Barbera, Daniele and Murata, Miho

Subjects
Mathematics - Analysis of PDEs, 76A15, 35Q30, 35Q35
Abstract

In this paper, we consider the model describing viscous incompressible liquid crystal flows, called the Beris-Edwards model, in the half-space.This model is a coupled system by the Navier-Stokes equations with the evolution equation of the director fields $Q$. The purpose of this paper is to prove that the linearized problem has a unique solution satisfying the maximal $L^p$ -$L^q$ regularity estimates, which is essential for the study of quasi-linear parabolic or parabolic-hyperbolic equations. Our method relies on the $\mathcal R$-boundedness of the solution operator families to the resolvent problem in order to apply operator-valued Fourier multiplier theorems. Consequently, we also have the local well-posedness for the Beris-Edwards model with small initial data., Comment: 56 pages

Published
2024

2. Nondegeneracy of ground states for nonlinear scalar field equations involving the Sobolev-critical exponent at high frequencies in three and four dimensions

Author

Akahori, Takafumi and Murata, Miho

Subjects
Mathematics - Analysis of PDEs, 35J20, 35B09, 35B33, 35Q55
Abstract

We consider nonlinear scalar field equations involving the Sobolev-critical exponent at high frequencies $\omega$. Since the limiting profile of the ground state as $\omega \to \infty$ is the Aubin-Talenti function and degenerate in a certain sense, from the point of view of perturbation methods, the nondegeneracy problem for the ground states at high frequencies is subtle. In addition, since the limiting profile (Aubin-Talenti function) fails to lie in $L^{2}(\mathbb{R}^{d})$ for $d=3,4$, the nondegeneracy problem for $d=3,4$ is more difficult than that for $d\ge 5$ and an applicable methodology is not known. In this paper, we solve the nondegeneracy problem for $d=3,4$ by modifying the arguments in [2, 3]. We also show that the linearized operator around the ground state has exactly one negative eigenvalue., Comment: 35 pages

Published
2022

3. Global well posedness for a Q-tensor model of nematic liquid crystals

Author

Murata, Miho and Shibata, Yoshihiro

Subjects
Mathematics - Analysis of PDEs, 35Q30, 76D05
Abstract

In this paper, we prove the global well posedness and the decay estimates for a $\mathbb Q$-tensor model of nematic liquid crystals in $\mathbb R^N$, $N \geq 3$. This system is coupled system by the Navier-Stokes equations with a parabolic-type equation describing the evolution of the director fields $\mathbb Q$. The proof is based on the maximal $L_p$ -$L_q$ regularity and the $L_p$ -$L_q$ decay estimates to the linearized problem., Comment: 29 pages

Published
2021
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4. Uniqueness of ground states for combined power-type nonlinear scalar field equations involving the Sobolev critical exponent and a large frequency parameter in three and four dimensions

Author

Akahori, Takafumi and Murata, Miho

Subjects
Mathematics - Analysis of PDEs, 35J20, 35B09, 35Q55
Abstract

We prove the uniqueness of ground states for combined power-type nonlinear scalar field equations involving the Sobolev critical exponent and a large frequency parameter. This study is motivated by the paper [2] and aims to remove the restriction on dimension imposed there. In this paper, we employ the fixed-point argument developed in [7] to prove the uniquness. Hence, the linearization around the Aubin-Talenti function plays a key role. Furthermore, we need some estimates for the associated perturbed resolvents (see Proposition 3.1)., Comment: 67 pages, 1 figure

Published
2021

5. The global well-posedness of the compressible fluid model of Korteweg type for the critical case

Author

Kobayashi, Takayuki and Murata, Miho

Subjects
Mathematics - Analysis of PDEs, 35Q30, 76N10
Abstract

In this paper, we consider the compressible fluid model of Korteweg type in a critical case where the derivative of pressure equals to $0$ at the given constant state. It is shown that the system admits a unique, global strong solution for small initial data in the maximal $L_p$-$L_q$ regularity class. As a result, we also prove the decay estimates of the solutions to the nonliner problem. In order to obtain the global well-posedness for the critical case, we show $L_p$-$L_q$ decay properties of solutions to the linearized equations under an additional assumption for a low frequencies., Comment: 13 pages. arXiv admin note: substantial text overlap with arXiv:1908.07224

Published
2020

6. Randomized controlled trial of KW-6356 monotherapy in patients with early untreated Parkinson's disease

Author

Abe, Takashi, Deguchi, Kentaro, Fujimoto, Kenichi, Hasegawa, Kazuko, Hatsuta, Hiroyuki, Hattori, Nobutaka, Hattori, Tatsuya, Ikebe, Shinichiro, Ishida, Yoshinori, Ishikawa, Mitsunori, Isobe, Chiaki, Ito, Kazunori, Ito, Mizuki, Kaneko, Chikako, Kaneko, Satoshi, Kanzato, Naomi, Kawashima, Noriko, Kitamura, Takeshi, Kitayama, Michio, Kimura, Takashi, Kosaka, Satoru, Tetsuya, Maeda, Mochizuki, Hideki, Morimoto, Nobutoshi, Murata, Miho, Naka, Takashi, Negishi, Teruhiko, Nishida, Yoshihiko, Nomoto, Masahiro, Orimo, Satoshi, Saiki, Hidemoto, Sakata, Mayumi, Sato, Akira, Shimo, Yasushi, Suzuki, Keisuke, Takahashi, Ryosuke, Takeda, Atsushi, Tatsuoka, Yoshihisa, Toda, Kazuo, Tomiyama, Masahiko, Toru, Shuta, Tsuboi, Yoshio, Tsujino, Akira, Uozumi, Takenori, Yamada, Hitoshi, Yamamoto, Mitsutoshi, Yoshida, Kazuto, Yoshinaga, Junji, Maeda, Tetsuya, Sugiyama, Kenichiro, Yamada, Kana, Hiraiwa, Ren, and Nishi, Masato

Published
2023
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8. The global well-posedness for the compressible fluid model of Korteweg type

Author

Murata, Miho and Shibata, Yoshihiro

Subjects
Mathematics - Analysis of PDEs
Abstract

In this paper, we consider the compressible fluid model of Korteweg type which can be used as a phase transition model. It is shown that the system admits a unique, global strong solution for small initial data in $\mathbb R^N$, $N \geq 3$. In this study, the main tools are the maximal $L_p$-$L_q$ regularity and $L_p$-$L_q$ decay properties of solutions to the linearized equations.

Published
2019

13. Idiopathic rapid eye movement sleep behavior disorder in Japan: An observational study

Author

Nishikawa, Noriko, Murata, Miho, Hatano, Taku, Mukai, Yohei, Saitoh, Yuji, Sakamoto, Takashi, Hanakawa, Takashi, Kamei, Yuichi, Tachimori, Hisateru, Hatano, Kenji, Matsuda, Hiroshi, Taruno, Yosuke, Sawamoto, Nobukatsu, Kajiyama, Yuta, Ikenaka, Kensuke, Kawabata, Kazuya, Nakamura, Tomohiko, Iwaki, Hirotaka, Kadotani, Hiroshi, Sumi, Yukiyoshi, Inoue, Yuichi, Hayashi, Toshihiro, Ikeuchi, Takeshi, Shimo, Yasushi, Mochizuki, Hideki, Watanabe, Hirohisa, Hattori, Nobutaka, Takahashi, Yuji, and Takahashi, Ryosuke

Published
2022
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14. Effect of donepezil for dementia prevention in Parkinson's disease with severe hyposmia (The DASH-PD study): A randomized long-term placebo-controlled trial

Author

Hisanaga, Kinya, Ugawa, Yoshikazu, Hattori, Nobutaka, Murata, Miho, Hasegawa, Kazuko, Sobue, Gen, Ito, Hidefumi, Yabe, Ichiro, Yamamoto, Tatsuya, Iijima, Mutsumi, Orimo, Satoshi, Okuma, Yasuyuki, Tokuda, Takahiko, Sugawara, Masahiro, Maeda, Tetsuya, Suzuki, Yoshihiro, Ishida, Yoshinori, Tanaka, Makoto, Saiki, Hidetsugu, Kashihara, Kenichi, Baba, Toru, Takeda, Atsushi, Murakami, Aya, Koga, Tadashi, Isomura, Tatsuya, and Mori, Etsuro

Published
2022
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18. Impact of Nutritional Status on Antibody Titer After Booster mRNA COVID-19 Vaccine Among Elderly Adults in Japan.

Author

Mori, Masahiko, Doi, Takashi, Murata, Miho, Moriyama, Yuichi, Akino, Kozo, Moriyama, Tadayoshi, Maekawa, Takafumi, and Doi, Nobumasa

Subjects
ANTIBODY titer, OLDER people, NUTRITIONAL status, ADULTS, COVID-19 vaccines
Abstract

Background Published studies on mRNA coronavirus disease 2019 (COVID-19) vaccine effects focus on younger individuals, comprising the majority of the workforce. Studies in elderly adults are sparse. Methods In total, 107 subjects were recruited (median age 78; interquartile range [IQR], 58.5–90.5; range, 35–105 years). Factors associated with antibody titer after the third mRNA COVID-19 vaccination were compared between 49 elderly (age ≥80; median, 94; IQR, 86–97; range, 80–105 years) and 58 younger (age ≤79; median, 61; IQR, 46–71; range, 35–79 years) adults. Results Among body mass index (BMI) categories, the group of underweight elderly adults had a lower antibody titer compared to those with normal weight (P <.01 after 1, 3, and 5 months). Elderly adults were less likely to maintain effective antibody titer (≥4160 AU/mL) compared to younger adults: 76% versus 98%, P <.001 after 1 month, and 45% versus 78%, P <.001 after 3 months. Elderly adults who maintained effective antibody titer for 5 months had a higher BMI (22.9 kg/m2 vs 20.1 kg/m2, P =.02), and were less likely to have underweight BMI (0% vs 31%, P =.02) compared to the subjects who failed to maintain effective antibody titer. Conclusions These results highlight the impact of nutritional status and the deleterious effect of underweight BMI on antibody titer and its maintenance among elderly adults following booster mRNA COVID-19 vaccination. [ABSTRACT FROM AUTHOR]

Published
2024
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25. Japanese multicenter database of healthy controls for [123I]FP-CIT SPECT

Author

Matsuda, Hiroshi, Murata, Miho, Mukai, Yohei, Sako, Kazuya, Ono, Hidetoshi, Toyama, Hiroshi, Inui, Yoshitaka, Taki, Yasuyuki, Shimomura, Hideo, Nagayama, Hiroshi, Tateno, Amane, Ono, Kenjiro, Murakami, Hidetomo, Kono, Atsushi, Hirano, Shigeki, Kuwabara, Satoshi, Maikusa, Norihide, Ogawa, Masayo, Imabayashi, Etsuko, Sato, Noriko, Takano, Harumasa, Hatazawa, Jun, and Takahashi, Ryosuke

Published
2018
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33. Author Correction: Safety and efficacy of anti-tau monoclonal antibody gosuranemab in progressive supranuclear palsy: a phase 2, randomized, placebo-controlled trial

Author

Dam, Tien, Boxer, Adam L, Yang, Lili, Shill, Holly, Shprecher, David, Stamelou, Maria, Steiger, Malcolm, Takahashi, Yuji, Takigawa, Hiroshi, Tartaglia, Carmela, Toenges, Lars, Truong, Daniel, Tse, Winona, Tidemann-Miller, Beth, Tuite, Paul, Volc, Dieter, Wills, Anne-Marie A, Woitalla, Dirk, Xie, Tao, Yuasa, Tatsuhiko, Zauber, Sarah Elizabeth, Zesiewicz, Theresa, Kupferman, Joseph, Harper, Kristine, Kamisoglu, Kubra, Wald, Michael J, Graham, Danielle L, Gedney, Liz, O'Gorman, John, Haeberlein, Samantha Budd, Golbe, Lawrence I, Group, PASSPORT Study, Aiba, Ikuko, Antonini, Angelo, Apetauerova, Diana, Azulay, Jean-Philippe, Martinez, Ernest Balaguer, Bang, Jee, Barone, Paolo, Barrett, Matthew, Bega, Danny, Höglinger, Günter, Berg, Daniela, Corrales, Koldo Berganzo, Bordelon, Yvette, Brandt, Moritz, Brueggemann, Norbert, Castelnovo, Giovanni, Ceravolo, Roberto, Chuang, Rosalind, Chung, Sun Ju, Morris, Huw R, Church, Alistair, Corvol, Jean-Christophe, Cudia, Paola, Dale, Marian, Defebvre, Luc, Drapier, Sophie, Driver-Dunckley, Erika D, Ebersbach, Georg, Eggert, Karla M, Ellenbogen, Aaron, Litvan, Irene, Eusebio, Alexandre, Evans, Andrew H, Fedorova, Natalia, Finger, Elizabeth, Foubert-Samier, Alexandra, Ghosh, Boyd, Golbe, Lawrence, Perez, Francisco Grandas, Grossman, Murray, Hall, Deborah, Lang, Anthony E, Hamada, Kyoko, Hasegawa, Kazuko, Hoeglinger, Guenter, Honig, Lawrence, Houghton, David, Huang, Xuemei, Isaacson, Stuart, Koh, SeongBeom, Bojarski, Jaime Kulisevsky, Leigh, Peter Nigel, Lozano, Juan Jose Lopez, Moreno, Jose Luis Lopez-Sendon, Ludolph, Albert Christian, Piudo, Ma Rosario Luquin, Torres, Irene Martinez, McFarland, Nikolaus, Meissner, Wassilios, Mestre, Tiago, Rivera, Pablo Mir, Molho, Eric, Mollenhauer, Britt, Murata, Miho, Obi, Tomokazu, Magne, Fabienne Ory, O'Suilleabhain, Padraig, Pahwa, Rajesh, Pantelyat, Alexander, Grundman, Michael, Pavese, Nicola, Pokhabov, Dmitry, Prudlo, Johannes, Rodriguez-Porcel, Federico, Rowe, James, Savitt, Joseph, Schnitzler, Alfons, Schulz, Joerg B, Seppi, Klaus, and Shah, Binit

Subjects
ddc:610, General Medicine, General Biochemistry, Genetics and Molecular Biology
Published
2022

36. Effect of donepezil for dementia prevention in Parkinson's disease with severe hyposmia (The DASH-PD study): A randomized long-term placebo-controlled trial

Author

Baba, Toru, primary, Takeda, Atsushi, additional, Murakami, Aya, additional, Koga, Tadashi, additional, Isomura, Tatsuya, additional, Mori, Etsuro, additional, Hisanaga, Kinya, additional, Ugawa, Yoshikazu, additional, Hattori, Nobutaka, additional, Murata, Miho, additional, Hasegawa, Kazuko, additional, Sobue, Gen, additional, Ito, Hidefumi, additional, Yabe, Ichiro, additional, Yamamoto, Tatsuya, additional, Iijima, Mutsumi, additional, Orimo, Satoshi, additional, Okuma, Yasuyuki, additional, Tokuda, Takahiko, additional, Sugawara, Masahiro, additional, Maeda, Tetsuya, additional, Suzuki, Yoshihiro, additional, Ishida, Yoshinori, additional, Tanaka, Makoto, additional, Saiki, Hidetsugu, additional, and Kashihara, Kenichi, additional

Published
2022
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46. Global Well-Posedness for the Compressible Nematic Liquid Crystal Flows.

Author

Murata, Miho

Subjects
*NEMATIC liquid crystals, *LIQUID crystals
Abstract

In this paper, we prove the unique existence of global strong solutions and decay estimates for the simplified Ericksen–Leslie system describing compressible nematic liquid crystal flows in R N , 3 ≤ N ≤ 7 . Firstly, we rewrite the system in Lagrange coordinates, and secondly, we prove the global well-posedness for the transformed system, which is the main task in this paper. The proof is based on the maximal L p - L q regularity and the L p - L q decay estimates to the linearized problem. [ABSTRACT FROM AUTHOR]

Published
2023
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