Zoekresultaten - "Tohoku University"

  1. 81

    Therapeutic Potential of Proanthocyanidins in Dentistry: A Focus on Periodontal Disease and on Dental Implants in Osteoporotic Patients door Yoshimi Niwano, Shunichi Shishido, Midori Shirato, Hidetsugu Kohzaki, Keisuke Nakamura

    Gepubliceerd in 2025-07-01

    Proanthocyanidins (PACs), also called condensed tannins, are oligomers or polymers composed of flavan-3-ols. This review aimed to explore the potential role of PACs in ameliorating oral health problems, with a particular focus on their effects within the intestine—especially the colon, where most or...

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  2. 82

    Experimental confirmation of radiative heating or cooling of the wall of natural convective thermal boundary layer in a differentially heated cubic cavity door Taisei TAKAGI, Takuma KOIZUMI, Atsuki KOMIYA, Junnosuke OKAJIMA, Hiroki GONOME, Takuma KOGAWA

    Gepubliceerd in 2025-06-01

    In this study, the impact of surface radiation on the natural convection inside a differentially heated cubic cavity was experimentally evaluated. The thermal boundary layer near the vertical isothermal walls was visualized for cases with two emissivity of 0.1 and 0.94 on the top and bottom walls, u...

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  3. 83

    Wettability Patternable Hybrid Polymer Films Based on TiO2 and Fluorinated Polymer for Bioelectronics Applications door Shunsuke Yamamoto, Hiroyuki Kai

    Gepubliceerd in 2022-12-01

    Abstract Organic–inorganic hybrid films based on TiO2 and a fluorinated polymer are fabricated, and their properties are investigated for bioelectronic applications. The analysis revealed that the preparation process requires (1) aging the blend solution before spin coating and (2) spin coating unde...

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  4. 84

    Wildfire‐Induced Enhancement in Downstream Flood Discharge in Watersheds of California door Wasitha Dilshan, Yusuke Hiraga, So Kazama

    Gepubliceerd in 2025-06-01

    ABSTRACT Global climate change is increasingly associated with the prevalence of extreme precipitation and large wildfires. The influence of large wildfires on downstream flood discharge is concerning, particularly from a flood risk management perspective, where understanding the impact at a watersh...

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  5. 85

    Structural Data Recognition With Graph Model Boosting door Tomo Miyazaki, Shinichiro Omachi

    Gepubliceerd in 2018-01-01

    This paper presents a novel method for structural data recognition using a large number of graph models. In general, prevalent methods for structural data recognition have two shortcomings: 1) only a single model is used to capture structural variation and 2) naive classifiers are used, such as the...

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  6. 86

    The Evolving Landscape of Systemic Sclerosis Pathogenesis: From Foundational Mechanisms to Organ-Specific Modifiers door Toshiya Takahashi, Yoshihide Asano

    Gepubliceerd in 2025-06-01

    Systemic sclerosis (SSc) is a multifaceted autoimmune disease in which the complex interplay of genetic predisposition and environmental factors triggers aberrant immune responses, ultimately leading to vasculopathy and fibrosis. This review offers a comprehensive overview of current perspectives on...

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  7. 87

    The Role of Public Education in NGO Advocacy in the Authoritarian Context: A Case Study of Chinese ENGOs door Mao Wenye, Nishide Yuko

    Gepubliceerd in 2025-06-01

    This study examines the role of public education in the advocacy strategies of non-governmental organizations (NGOs) under authoritarian constraints, using Chinese environmental NGOs (ENGOs) as a case. Despite the increasing use of social media, the advocacy function of public education remains unde...

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  8. 88

    A Microphysics Model of Multicomponent Venus' Clouds With a High‐Accuracy Condensation Scheme door H. Karyu, T. Kuroda, A. Mahieux, S. Viscardy, A. Määttänen, N. Terada, S. Robert, A. C. Vandaele, M. Crucifix

    Gepubliceerd in 2025-06-01

    Abstract Accurate modeling of the Venusian cloud structure remains challenging due to its complex microphysical properties. Condensation primarily determines the cloud particle size distribution within the various cloud layers. However, existing Venus microphysics models mainly use a full‐stationary...

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  9. 89

    Treatment of idiopathic hypersomnia with modafinil in an individual at clinical high risk for psychosis: A case report door Yutaro Sato, Atsushi Sakuma, Hiroaki Tomita

    Gepubliceerd in 2025-06-01

    Abstract Background Recent studies have shown that sleep disturbances are frequent at different stages of psychosis, including clinical high risk for psychosis (CHR‐P). However, the comorbidity of hypersomnia with CHR‐P and its treatment have rarely been reported or discussed. Case Presentation A 16...

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  10. 90

    Experimental Liquid Densities of Red Palm Oil at Pressures up to 150 MPa from (312 to 352) K and Dynamic Viscosities at 0.1 MPa from (293 to 353) K door Jia Lin Lee, Gun Hean Chong, Yuya Hiraga, Yoshiyuki Sato, Masaki Ota, Richard Lee Smith

    Gepubliceerd in 2025-05-01

    Density and viscosity are fundamental properties necessary for processing of red palm oil (RPO). The main fatty acid constituents of RPO were determined to be palmitic acid (C<sub>16:0</sub>), oleic acid (C<sub>18:1</sub>), and linoleic acid (C<sub>18:2</sub>). Rh...

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  11. 91

    Coherent all Optical Reservoir Computing for Equalization of Impairments in Coherent Fiber Optic Communication Systems door Shiva Kumar, Mahmoud M. T. Maghrabi, Mohamed H. Bakr, Toshihiko Hirooka, Masataka Nakazawa

    Gepubliceerd in 2024-01-01

    Reservoir computing (RC) is a bio-inspired framework suited for temporal data processing. Here we propose an all optical coherent RC for the equalization of the impairments of fiber optic (FO) system based on coherent detection. We compare the performances of the RC systems based on semiconductor sa...

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  12. 92

    Resilience Evaluation of Post-Earthquake Functional Recovery for Precast Prestressed Concrete Buildings door Hanxi Zhao, Noriyuki Takahashi

    Gepubliceerd in 2025-06-01

    To improve the post-earthquake resilience evaluation of concrete buildings with various construction types, this study presents a generalized recovery-based framework that ext-ends the FEMA P-58 methodology. The proposed method introduces a dynamic repair scheduling approach that incorporates two ke...

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  13. 93

    Life Prediction of Crack Growth for P92 Steel Under Strain-Controlled Creep–Fatigue Conditions Using a Sharp Notched Round Bar Specimen door A. Toshimitsu Yokobori, Go Ozeki, Kazutaka Jinno, Hiroaki Seino, Ryuji Sugiura, Isamu Nonaka

    Gepubliceerd in 2025-06-01

    Testing and the estimation methods for predicting the life of crack initiation and crack growth for P92 steel using a circular sharp notched round bar specimen (CNS) under strain-controlled creep and fatigue conditions have been reported previously. A unique estimation method for the cycle-sequentia...

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  14. 94

    Nanosized Anisotropic Sm–Fe–N Particles with Metastable TbCu7-Type Structures Prepared by an Induction Thermal Plasma Process door Yusuke Hirayama, Jian Wang, Masaya Shigeta, Shunsuke Tsurumi, Makoto Sugimoto, Zheng Liu, Kenta Takagi, Kimihiro Ozaki

    Gepubliceerd in 2025-07-01

    TbCu<sub>7</sub>-type Sm-based compounds can be produced in bulk and potentially surpass Nd<sub>2</sub>Fe<sub>14</sub>B as permanent magnets. However, as the processes to prepare anisotropic magnetic particles are limited, the full potential of TbCu<sub>7<...

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  15. 95

    Case Report: Adrenocortical adenoma harboring atypical subclinical Cushing’s syndrome with dehydroepiandrosterone sulfate transferase and cytochrome b5 expression in tumor cells door Ichiro Abe, Yuto Yamazaki, Ayuko Higashi, Kentaro Ochi, Keita Kubo, Yuya Fujita, Kaori Takeshita, Toshiaki Wada, Ryo Mitsuoka, Yo Yamashita, Ryoko Yoshida, Tamotsu Kato, Tadachika Kudo, Shigero Miyajima, Tatsu Ishii, Satoshi Nimura, Takashi Suzuki, Hironobu Sasano, Kunihisa Kobayashi

    Gepubliceerd in 2025-07-01

    Subclinical Cushing’s syndrome (SCS) is frequently encountered during the clinical evaluation of adrenal incidentalomas and is typically associated with reduced levels of serum dehydroepiandrosterone sulfate (DHEA-S). Cytochrome b5 is a component of the electron transfer system that enhances the act...

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  16. 96

    Origin of interstitial water beneath the continental shelf offshore northwestern Australia: insights from hydrogen and oxygen isotope compositions door Kosuke Yoshii, Hideko Takayanagi, Toshihiro Miyajima, Lars Reuning, Kazuyuki Yamamoto, Yasufumi Iryu

    Gepubliceerd in 2025-06-01

    Abstract We analyzed the hydrogen and oxygen isotope compositions of interstitial water collected from Miocene–Quaternary carbonate platforms beneath the continental shelf margin off northwestern Australia during the International Ocean Discovery Program Expedition 356. By integrating isotope data w...

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  17. 97

    Boron as a passivating dopant of oxygen-vacancy-induced hole traps at GaN/SiO2 interface door Yuansheng Zhao, Atsushi Oshiyama, Kenji Shiraishi

    Gepubliceerd in 2025-01-01

    Recent experiments followed by our first-principles calculations have shown that heavily Mg-doped GaN epitaxial layers suppress hole traps due to oxygen vacancy V _O in the GaO _x interfacial layer at the GaN/SiO _2 interfaces, but leave a serious issue of controlling hole-concentration profiles. In...

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  18. 98

    Enhanced bonding stability of Fe oxide layer on low carbon steel via low-pressure air oxidation door Jun Sang Park, Hidemi Kato, Eun-Ae Choi, Seung Zeon Han

    Gepubliceerd in 2025-09-01

    The oxidation behavior of low carbon steel (SS400) was investigated at 500 °C under different air pressures: 1 atm, 1/10,000 atm, and 1/50,000 atm. The results showed that the oxide growth rate at 1/10,000 atm was higher than at atmospheric pressure, primarily due to the reduced formation of dense F...

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  19. 99

    Delayed bronchial perforation after bulla cauterization with soft coagulation system door Sakiko Kumata, Katsunari Matsuoka, Shinjiro Nagai, Mitsuhiro Ueda, Yoshinori Okada, Yoshihiro Miyamoto

    Gepubliceerd in 2021-11-01

    Abstract Background Soft coagulation is widely used for hemostasis because of its significant advantage in inducing tissue coagulation and denaturation without carbonization. However, a few cases of airway damage have been reported at the site, where soft coagulation was directly applied. Case prese...

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  20. 100

    Is S5 Paraconsistent? door Hitoshi Omori

    Gepubliceerd in 2025-07-01

    The aim of this note is to examine the claim of B´eziau that S5 is paraconsistent. In particular, I wish to clarify what exactly is implicitly assumed behind his claim, and how we might be able to assess the claim “S5 is paraconsistent”.

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