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Motor and Nonmotor Components of Event-Brain Potential in Preparation of Motor Response

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Journal of Behavioral and Brain Science 2011年第4期1卷 234-241页

作者： Yasunori Kotani Yoshimi Ohgami jun-ichiro arai Shigeru Kiryu Yusuke Inoue 不详

Stimulus-preceding negativity (SPN), readiness potential (RP), and contingent negative variation (CNV) were recorded to verify the hypothesis that the CNV late wave is the sum of the RP and the SPN. SPN and RP were elicited using a time-estimation task, and the CNV was recorded using a warned reaction-time task. A “virtual CNV” was calculated by superimposing the SPN on the RP. Then the real and virtual CNVs were compared to evaluate the hypothesis. Although an amplitude difference between the real and virtual CNV late waves was observed at the frontal site, the amplitudes at the central and parietal sites were not different between the two. These results suggest that the CNV late wave and the SPN might have a common underlying physiological mechanism in the parietal area, and that these potentials might be related to attentional systems.

关键词： Contingent Negative Variation Stimulus-Preceding Negativity

Motor and Nonmotor Components of Event-Brain Potential in Preparation of Motor Response

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Exploring the novel role of oligodendrocyte precursor cells in phagocytosis:beyond myelinogenesis

Journal of Behavioral and Brain Science（行为与脑科学期刊） 2011年第4期 234-241页

作者： Yasunori Kotani Yoshimi Ohgami jun-ichiro arai Shigeru Kiryu Yusuke Inoue

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Neural Regeneration Research 2025年第2期20卷 473-474页

作者： Gen Hamanaka Ken arai Neuroprotection Research Laboratories Departments of Radiology and NeurologyMassachusetts General Hospital and Harvard Medical SchoolCharlestownMAUSA

Roles of oligodendrocyte precursor cells in the central nervous system:Oligodendrocyte precursor cells(OPCs)have long been recognized for their critical role as precursors to oligodendrocytes,the primary myelin-producing *** precursors,OPCs mature and differentiate into oligodendrocytes,which contribute significantly to the formation of myelin sheaths around *** myelination,which is critical for the conduction of salutatory nerve impulses in the cerebral white matter,underscores the classical role of oligodendrocytes in central nervous system(CNS)***,because oligodendrocytes are differentiated cells that cannot proliferate.

关键词： critical system conduction

Utility of plasma D-dimer for diagnosis of venous thromboembolism after hepatectomy

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World Journal of Clinical Cases 2024年第2期12卷 276-284页

作者： Taiichiro Miyake Hiroaki Yanagimoto Daisuke Tsugawa Masayuki Akita Riki Asakura Keisuke arai Toshihiko Yoshida Shinichi So jun Ishida Takeshi Urade Yoshihide Nanno Kenji Fukushima Hidetoshi Gon Shohei Komatsu Sadaki Asari Hirochika Toyama Masahiro Kido Tetsuo Ajiki Takumi Fukumoto Division of Hepato-Biliary-Pancreatic Surgery Department of SurgeryKobe University Graduate School of MedicineKobe 650-0017HyogoJapan

BACKGROUND Venous thromboembolism(VTE)is a potentially fatal complication of *** use of postoperative prophylactic anticoagulation in patients who have undergone hepatectomy is controversial because of the risk of postoperative ***,we hypothesized that monitoring plasma D-dimer could be useful in the early diagnosis of VTE after *** To evaluate the utility of monitoring plasma D-dimer levels in the early diagnosis of VTE after *** The medical records of patients who underwent hepatectomy at our institution between January 2017 and December 2020 were retrospectively *** were divided into two groups according to whether or not they developed VTE after hepatectomy,as diagnosed by contrast-enhanced computed tomography and/or ultrasonography of the lower *** factors,including demographic data and perioperative D-dimer values,were compared between the two *** operating characteristic curve analysis was performed to determine the D-dimer cutoff *** and multivariate analyses were performed using logistic regression analysis to identify significant *** In total,234 patients who underwent hepatectomy were,of whom(5.6%)were diagnosed with VTE following hepatectomy.A comparison between the two groups showed significant differences in operative time(529 vs 403 min,P=0.0274)and blood loss(530 vs 138 mL,P=0.0067).The D-dimer levels on postoperative days(POD)1,3,5,7 were significantly higher in the VTE group than in the non-VTE *** the multivariate analysis,intraoperative blood loss of>275 mL[odds ratio(OR)=5.32,95%confidence interval(CI):1.05-27.0,P=0.044]and plasma D-dimer levels on POD 5≥21μg/mL(OR=10.1,95%CI:2.04-50.1,P=0.0046)were independent risk factors for VTE after *** Monitoring of plasma D-dimer levels after hepatectomy is useful for early diagnosis of VTE and may avoid routine prophylactic anticoagulation in the

关键词： Hepatectomy Malignant tumor Postoperative complication D-dimer Early diagnosis Venous thromboembolism

Internet survey on the provision of complementary and alternative medicine in Japanese private clinics: a cross-sectional study

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Journal of Integrative Medicine 2019年第1期17卷 8-13页

作者： Yoshiharu Motoo Keiko Yukawa Kazuho Hisamura Kiichiro Tsutani ichiro arai Department of Medical Oncology Kanazawa Medical University Department of Health Policy and Technology Assessment National Institute of Public Health Faculty of Health Sciences Tokyo Ariake University of Medical and Health Sciences Department of Pharmaceutical Sciences Nihon Pharmaceutical University

Objective: Although the use of complementary and alternative medicine(CAM) by the general population has been surveyed previously, the provision of CAM by Japanese physicians in private clinics has not been studied. Universal health insurance system was established in Japan in 1961, and most CAMs are not on the drug tariff. We aimed to clarify the current status of CAM provided by physicians at private clinics in ***: We conducted an internet survey on 400 directors/physicians of private clinics nationwide on the provision of CAM from February 6 to February 10, 2017. Survey items included attributes of subjects,presence/absence of sections or facilities for provision of CAM, proportions of health insurance coverage for medical practices, and source of information. Private clinic was defined as a clinic run by one physician, with less than 20 ***: Commonly provided CAMs were Kampo(traditional Japanese herbal) medicines(34.8%) and supplements/health foods(19.3%). CAMs on the drug tariff were provided in 46.5% of cases at the clinics, but only 16.5% of cases were provided CAMs which were not on the drug tariff, at different neighboring facilities. Among different specialties, Kampo medicines were prescribed at obstetrics/gynecology(54.0%),orthopedics(44.4%), and dermatology(43.0%). Clinics not providing any CAM accounted for 53.5%.With regard to health insurance coverage, 96.8% of the clinics provided only or mainly health services on the universal national health insurance tariff(29.8% and 67.0%, respectively).Conclusion: Kampo medicines represent the most commonly used CAM in private clinics in Japan, and universal national health insurance coverage is considered to be the reason for the high rate of their use.

关键词： Japan Complementary and alternative medicine Private clinic Internet survey Kampo

One-Pot Room-Temperature Synthesis of Mg Containing MCM-41 Mesoporous Silica for Aldol Reactions

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Journal of Materials Science & Technology 2018年第12期34卷 2521-2528页

作者： Shin-ichiro Fujita Shinji Segawa Kazuki Kawashima Xuejing Nie Tomoki Erata Masahiko arai Division of Applied Chemistry Faculty of EngineeringHokkaido University

One-pot synthesis of Mg containing MCM-41(Mg-MCM-41) materials was respectively carried out by a room temperature(RT) method and a hydrothermal(HT) method for aldol condensation of 4-nitrobenzaldehyde and acetone and self-condensation of acetone. The RT method can prepare MCM-41 materials containing large amounts of Mg while maintaining the structural characteristics of MCM-41 even at very low Si/Mg ratios(large Mg loadings), but the HT method cannot. The RT method can also give more active catalysts than the HT method, because the catalysts prepared by the RT method are more basic than those prepared by the HT one. The characterization indicates that Mg atoms in the Mg-MCM-41 prepared by the RT method exist as MgO disperses well on the wall surface of pores, while those in Mg-MCM-41 prepared by the HT method are included in the bulk with a smectite-like structure.

关键词： Aldol condensation Solid base catalyst Mg incorporated mesoporous silica Magic angle spinning nuclear magnetic resonance

Inelastic constitutive equation of plasma-sprayed ceramic thermal barrier coatings

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Acta Metallurgica Sinica(English Letters) 2011年第2期24卷 161-168页

作者： Masayuki arai Materials Science Research Laboratory Central Research Institute of Electric Power Industry

Ceramic thermal barrier coatings （TBCs） are a very important technology for protecting the hot parts of gas turbines （GTs） from a high-temperature environment. The coating stress generated in the operation of GTs brings cracking and peeling damage to the TBCs. Thus, it is necessary to evaluate precisely such coating stress in a TBC system. We have obtained a stress-strain curve for a freestanding ceramic coat specimen peeled from a TBC coated substrate by conducting the bending test. The test results have revealed that the ceramic coating deforms nonlinearly with the applied loading. In this study, an inelastic constitutive equation for the ceramic thermal barrier coatings deposited by APS is developed. The obtained results are as follows：（1） the micromechanics-based constitutive equation was formulated with micro crack density formed at splat boundary, and （2） it was shown that the numerical results for a nonlinearly deformed beam simulated by the developed constitutive equation agreed with the experimental results obtained by cantilever bending tests.

关键词： Inelastic constitutive equation Thermal barrier coating Gas turbine Micromechanics

How to Transmit Disaster Information Effectively:A Linguistic Perspective on Japan’s Tsunami Warnings and Evacuation Instructions

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International Journal of Disaster Risk Science 2013年第3期4卷 150-158页

作者： Kyoko arai Faculty of Business Administration Toyo UniversityTokyo 112-8606Japan

When the disastrous tsunamis hit East Japan on 11 March 2011, the hi-tech information transmission system that is the pride of Japan was unable to send out the Tsunami Warnings effectively;many lives were lost as a result. Subsequently, the Japan Meteorological Agency(JMA) set up a committee of experts to improve the overall system. Last year as a result of their meetings, a report on The Improvement of the Information Text for the Tsunami Warnings was announced. The changes are, however, problematic from the linguistics perspective as the committee did not include any experts in the field. This study examines a range of recordings of the Tsunami Warnings and the Evacuation Instructionsi given for the East Japan tsunami disaster from the perspective of linguistics, especially pragmatics, whose main objective is to discover how recipients interpret verbal messages. The aim of this article is to propose further improvement to the transmission system of Tsunami Warnings and Evacuation Instructions. This study also emphasizes the necessity and importance of reexamining the overall disaster information transmission issue in Japan, from the linguistics perspective.

关键词： disaster Japan recording

Detection of small delamination in mullite/Si/SiC model EBC system by pulse thermography

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Journal of Advanced Ceramics 2019年第3期8卷 438-447页

作者： Yutaro arai Ryo INOUE Department of Materials Science and Technology Tokyo University of Science6-3-1NiijyukuKatsushika-kuTokyo125-8585Japan Department of Mechanical Engineering Tokyo University of Science6-3-1NiijyukuKatsushika-kuTokyo125-8585Japan

The pulse thermography(PT) technique was applied to the detection of the delamination of a multi-layered coating system composed of mullite/Si onto a reaction-bonded Si C substrate. The potential evaluation was carried out in order to detect internal delamination in multi-layered material system. Moreover, the observation of the cross sections and 3D views obtained by X-ray computed tomography(CT) indicated that the delamination occurred at the interface between the top coat and the bond coat layers. The changes in the temperature distribution obtained by PT indicated the existence of a delamination area in the top coat layer of the mullite. In particular, the lower temperature region corresponded to the delamination area. The experimental results confirmed that the PT technique is effective with respect to the internal delamination of multi-layered coating system.

关键词： environmental barrier coatings (EBCs) delamination pulse thermography (PT) multi-layer image processing