Hiroki Takemoto

University of Toyama

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Sleep disturbance after cessation of cannabis administration in mice

Neuropsychopharmacology Reports (2023)

Takashi Asano Hiroki Takemoto Tomoya Horita Tomohiro Tokutake Naotaka Izuo

Cannabis withdrawal syndrome (CWS) in humans is characterized by various somatic symptoms, including sleep disturbances. In the present study, we investigated sleep alterations in mice after the cessation of arachidonylcyclopropylamide (ACPA), a cannabinoid type 1 receptor agonist, administration. ACPA-administered mice (ACPA mice) displayed an increased number of rearings after the cessation of ACPA administration compared to saline-administered mice (Saline mice). Moreover, the number of rubbings was also decreased in ACPA mice compared with those of the control mice. Electroencephalography (EEG) and electromyography (EMG) were measured for 3 days after the cessation of ACPA administration. During ACPA administration, there was no difference in the relative amounts of total sleep and wake time between ACPA and Saline mice. However, ACPA-induced withdrawal decreased total sleep time during the light period in ACPA mice after ACPA cessation. These results suggest that ACPA cessation induces sleep disturbances in the mouse model of CWS.

Sleep

10.1002/npr2.12329

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Citations (4)

Development of Cylindrical ECR Magnetron Sputtering Apparatus

APS Annual Gaseous Electronics Meeting Abstracts (1998)

Akira Yonesu Hiroki Takemoto Naoki Nishimura Yasumasa Yamashiro

Cavity magnetron

Source

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Citations (0)

Characteristics of DC Magnetron Sputtering Discharge Assisted by Microwave Plasma

APS (1999)

Akira Yonesu Hiroki Takemoto Naoki Nishimura Shōichi Satō Yasumasa Yamashiro

Cavity magnetron

Pulsed DC

Source

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Growth of high-indium-content InGaN:Mg thin films by MBE method with dual RF nitrogen plasma cells

Japanese Journal of Applied Physics (2014)

Yuichi Sato Tatsuya Matsunaga Hiroki Takemoto Yoshifumi Murakami Yuhei Muraki

Abstract Mg-doped high-In-content In x Ga 1− x N ( x ∼ 0.35) thin films were grown on a c -face sapphire substrate using an MBE apparatus having dual RF nitrogen plasma cells. The films showed p-type conduction under certain cell temperatures of Mg. The p-type conduction was confirmed by electrolyte-based capacitance–voltage measurement on an In x Ga 1− x N:Mg/In 2 O 3 /sapphire structure, in addition to thermo-electromotive force measurements.

10.7567/jjap.53.11rc04

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Citations (1)

111 Stabilization and position control of the object on a tray with robot arm

The Proceedings of Conference of Tokai Branch (2011)

Hiroki Takemoto Naoki Mizuno

Tray

Position (finance)

10.1299/jsmetokai.2011.60._111-1_

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Citations (0)

Development of a cylindrical DC magnetron sputtering apparatus assisted by microwave plasma

Vacuum (2002)

Akira Yonesu Hiroki Takemoto Makoto Hirata Yasumasa Yamashiro

Cavity magnetron

Deposition

Torr

10.1016/s0042-207x(02)00154-9

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Citations (10)

Vibration Suppression Control for Multi-Mode Vibration System Using Differential Controller

The Proceedings of the Dynamics & Design Conference (2017)

Hiroki Takemoto Yoji Masui

In this paper, we describe a method for vibration suppression of multi-mode vibration system. This is the method which combined a filter to pick signal of fixed transfer function out with a general differential controller. It's possible to pick only signal of fixed transfer function out from output signal and feedback it by this filter.In this paper, we indicate the algorithm of the proposed method, and confirm the effect of vibration suppression by simulations and experiments. We confirmed that the proposed method can suppress the first mode vibration of the plant by step response and disturbance response simulations. Further, we performed verification experiments and confirmed that it's possible that the proposed method suppresses the first mode vibration of the plant by measurement results of frequency response and step response. From these results, we showed the validity to the vibration suppression of the proposed method.

SIGNAL (programming language)

Mode (computer interface)

Active Vibration Control

10.1299/jsmedmc.2017.323

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Citations (0)

GS41 Simulation of viral transmission in human upper respiratory tract

Ryuutai Kougaku Bumon Kouenkai kouen rombunshuu/Ryutai Kogaku Bumon Koenkai koen ronbunshu (2015)

Hiroki Takemoto Masashi Yamakawa Kenichi MATSUNO

For various types of viral infectious diseases represented by influenza, it is an important issue to prevent a risk of viral infection. In addition virus can penetrate in respiratory, then viral adhesion part is difficult to revealing. In this paper, to specify where virus adhere in respiratory tract, viral movement were simulated by CFD using some parameters based on epidemiology. As the parameters, change in droplet radius because of evaporation, a sedimentation rate of particle was adopted. In addition, flows caused by breathing were also thought for the computation. As a result, visualization of viral movement was observed by the simulation. Then a possibility of contribution to specifying infection part was shown.

Respiratory tract

Viral infection

10.1299/jsmefed.2015._gs41-1_

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Cylindrical DC Magnetron Sputtering Assisted by Microwave Plasma

Japanese Journal of Applied Physics (1999)

Akira Yonesu Takashi Kato Takashi Kato Hiroki Takemoto Naoki Nishimura Yasumasa Yamashiro

A new magnetron sputtering apparatus assisted by microwave plasma has been developed to achieve high sputter deposition rates at low gas pressures. In this apparatus, a microwave plasma is produced in a cylindrical multipolar magnetron arrangement and utilized for DC magnetron sputtering deposition. With the assistance of microwave plasma, operation of the magnetron discharge has been achieved at pressures on the order of 10 -4 Torr. Aluminum films are deposited in this apparatus at rates greater than 50 nm/min even at the low gas pressure of 2.5×10 -4 Torr.

Cavity magnetron

Torr

Deposition

10.1143/jjap.38.4326

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Citations (18)