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1,424 results on '"Kawakami, Takashi"'

101. Improved Mechanical Characterization of LiCoO2Cathode Material by Ab-InitioCalculations Using Density Functional Theory

Author

Torii, Masato, Kawakami, Takashi, Yamanaka, Shusuke, and Okumura, Mitsutaka

Abstract

In the application of density functional theory (DFT) calculations to LiCoO2(LCO) cathode material of lithium-ion batteries, this study investigates the differences between the obtained values for lattice constants, elastic constants, and stress-strain curves using different calculation condition such as exchange-correlation energy functionals; additionally, it attempts to improve the accuracy of the mechanical characterization of the DFT calculation. The results reveal that the adoption of Perdew-Wang (PW91) functional with dispersion corrections is better in the structural optimization of the DFT calculation for the LCO cathode compared with other calculation conditions, such as the adoption of Perdew-Burke-Ernzerhof (PBE) and revised PBE for solids (PBE-solid), which have been used in previous studies. The high accuracy of the lattice constant calculations in the structural optimization using PW91 results in a relatively high evaluation accuracy of the mechanical properties of these cathode materials. Additionally, a strong correlation between the lattice (or lattice volumes) and elastic constants is observed; evidently, a slight deviation in the lattice constants causes a relatively significant change in the elastic constants. In some of the calculation results for stress-strain curves, differences in the elastic limits (elastic regions) dependent on the selected exchange-correlation functionals are clearly observed.In the ab-initiocalculations using density functional theory, we estimate the mechanical properties of LiCoO2(LCO) cathode material and seek better exchange-correlation functionals. Our study reveals that the Perdew-Wang (PW91) functional is better in the structural optimization and estimation of mechanical properties of LCO compared with other functionals.

Published
2023
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102. Methods for Manipulating DNA Molecules in a Micrometer Scale Using Optical Techniques

Author

Ogura, Yusuke, Kawakami, Takashi, Sumiyama, Fumika, Irie, Satoru, Suyama, Akira, Tanida, Jun, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Ferretti, Claudio, editor, Mauri, Giancarlo, editor, and Zandron, Claudio, editor

Published
2005
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112. Efficacy and Safety of Direct Oral Anticoagulants Versus Warfarin in Patients with Chronic Thromboembolic Pulmonary Hypertension (CTEPH AC Registry): A Nationwide Prospective Cohort Study in Japan

Author

Hosokawa, Kazuya, primary, Abe, Kohtaro, additional, Funakoshi, Kouta, additional, Tamura, Yuichi, additional, Nakashima, Naoki, additional, Todaka, Koji, additional, Taniguchi, Yu, additional, Inami, Takumi, additional, Adachi, Shiro, additional, Tsujino, Ichizo, additional, Yamashita, Jun, additional, Minatsuki, Shun, additional, Ikeda, Nobutaka, additional, Shimokawahara, Hiroto, additional, Kawakami, Takashi, additional, Ogo, Takeshi, additional, Hatano, Masaru, additional, Ogino, Hitoshi, additional, Fukumoto, Yoshihiro, additional, Tanabe, Nobuhiro, additional, Matsubara, Hiromi, additional, Fukuda, Keiichi, additional, Tatsumi, Koichiro, additional, and Tsutsui, Hiroyuki, additional

Published
2022
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116. Growth optimization of single-phase novel colloidal perovskite Cs3Bi2I9 nanocrystals and Cs3Bi2I9@SiO2 core–shell nanocomposites for bio-medical application

Author

Vedi, Santhana, primary, Dheivasigamani, Thangaraju, additional, Selvam, Govarthini Seerangan, additional, Kawakami, Takashi, additional, Rajeswaran, Narmadha, additional, Rajendran, Selvakumar, additional, Muthukaruppan, Alagar, additional, AlFaify, S., additional, and Shkir, Mohd., additional

Published
2022
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119. Endometrioid Adenocarcinoma with High-Grade Transformation with Serous and Choriocarcinomatous Differentiation - A Case Report

Author

Senn Wakahashi, Tamotsu Sudo, Eriko Nakagawa, Sayaka Ueno, Miho Muraji, Seiji Kanayama, Hiroe Itami, Fumi Kawakami, Takashi Yamada, Satoshi Yamaguchi, Kiyoshi Fujiwara, Hironobu Nishikawa, Ryuichiro Nishimura, Chiho Ohbayashi

Subjects
Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

A choriocarcinoma component with a malignant tumor is relatively rare. We present a case of an 85-year-old woman with mixed carcinoma, which was endometrioid adenocarcinoma with squamous differentiation, choriocarcinoma and a disseminated peritoneal nodule, which was papillary serous adenocarcinoma. The patient received surgery and conservative treatment. Twenty weeks after surgery, a recurring tumor appeared at the Douglas pouch. Histology showed that the recurring tumor was poorly differentiated carcinoma that was very different from the primary tumor. This case represents an unusual uterine corpus cancer with high-grade transformation with serous and choriocarcinomatous differentiation. This case also demonstrates the capacity of tumor cells to differentiate into divergent elements.

Published
2012

131. Exercise tolerance and quality of life in hemodynamically partially improved patients with chronic thromboembolic pulmonary hypertension treated with balloon pulmonary angioplasty

Author

Miura, Kotaro, primary, Katsumata, Yoshinori, additional, Kawakami, Takashi, additional, Ikura, Hidehiko, additional, Ryuzaki, Toshinobu, additional, Shiraishi, Yasuyuki, additional, Fukui, Shogo, additional, Kawakami, Michiyuki, additional, Kohno, Takashi, additional, Sato, Kazuki, additional, and Fukuda, Keiichi, additional

Published
2021
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138. sj-pdf-1-crd-10.1177_14799731211046634 – Supplemental Material for Factors related to instrumental activities of daily living in persons with chronic thromboembolic pulmonary hypertension

Author

Iwasawa, Tatsuya, Fukui, Shogo, Kawakami, Michiyuki, Kawakami, Takashi, Kataoka, Masaharu, Yuasa, Shinsuke, Fukuda, Keiichi, Fujiwara, Toshiyuki, and Tsuji, Tetsuya

Subjects
110203 Respiratory Diseases, FOS: Clinical medicine, 111702 Aged Health Care, FOS: Health sciences
Abstract

Supplemental Material, sj-pdf-1-crd-10.1177_14799731211046634 for Factors related to instrumental activities of daily living in persons with chronic thromboembolic pulmonary hypertension by Tatsuya Iwasawa, Shogo Fukui, Michiyuki Kawakami, Takashi Kawakami, Masaharu Kataoka, Shinsuke Yuasa, Keiichi Fukuda, Toshiyuki Fujiwara and Tetsuya Tsuji in Chronic Respiratory Disease

Published
2021
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146. Heart failure causes cholinergic transdifferentiation of cardiac sympathetic nerves via gp130-signaling cytokines in rodents

Author

Kanazawa, Hideaki, leda, Masaki, Kimura, Kensuke, Arai, Takahide, Kawaguchi-Manabe, Haruko, Matsuhashi, Tomohiro, Endo, Jin, Sano, Motoaki, Kawakami, Takashi, Kimura, Tokuhiro, Monkawa, Toshiaki, Hayashi, Matsuhiko, Iwanami, Akio, Okano, Hideyuki, Okada, Yasunori, Ishibashi-Ueda, Hatsue, Ogawa, Satoshi, and Fukuda, Keiichi

Subjects
Transdifferentiation -- Physiological aspects, Cytokines -- Physiological aspects, Neurogenesis -- Physiological aspects, Heart failure -- Physiological aspects -- Patient outcomes, Health care industry
Abstract

Although several cytokines and neurotrophic factors induce sympathetic neurons to transdifferentiate into cholinergic neurons in vitro, the physiological and pathophysiological roles of this remain unknown. During congestive heart failure (CHF), sympathetic neural tone is upregulated, but there is a paradoxical reduction in norepinephrine synthesis and reuptake in the cardiac sympathetic nervous system (SNS). Here we examined whether cholinergic transdifferentiation can occur in the cardiac SNS in rodent models of CHF and investigated the underlying molecular mechanism(s) using genetically modified mice. We used Dahl salt-sensitive rats to model CHF and found that, upon CHF induction, the cardiac SNS clearly acquired cholinergic characteristics. Of the various cholinergic differentiation factors, leukemia inhibitory factor (LIF) and cardiotrophin-1 were strongly upregulated in the ventricles of rats with CHF. Further, LIF and cardiotrophin-1 secreted from cultured failing rat cardiomyocytes induced cholinergic transdifferentiation in cultured sympathetic neurons, and this process was reversed by siRNAs targeting Lif and cardiotrophin-1. Consistent with the data in rats, heart-specific overexpression of LIF in mice caused cholinergic transdifferentiation in the cardiac SNS. Further, SNS-specific targeting of the gene encoding the gp130 subunit of the receptor for LIF and cardiotrophin-1 in mice prevented CHF-induced cholinergic transdifferentiation. Cholinergic transdifferentiation was also observed in the cardiac SNS of autopsied patients with CHF. Thus, CHF causes target-dependent cholinergic transdifferentiation of the cardiac SNS via gp130-signaling cytokines secreted from the failing myocardium., Introduction Cardiac function is rightly controlled by the balance between the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The SNS produces norepinephrine (NE) and increases the heart [...]

Published
2010
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