Chikusa ku, Japan
Chikusa ku, Japan

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Kashimura K.,322 6 Oroshi cho | Fukushima J.,Furo cho | Sato M.,322 6 Oroshi cho
Materials Science and Technology Conference and Exhibition 2010, MS and T'10 | Year: 2010

Chemical reaction under microwave field goes noticed as the heating mechanism has been studied. It was reported that a reduction caused by microwave heating shows different scientific behavior from that by conventional ones. Authors noticed that metal titanium powders are heated by microwave heating at high oxygen partial pressure and the oxygen partial pressure change of exhaust-gas were measured to understand the mechanism of the nitriding response using solid electrolyte oxygen sensor. The nitridation mechanism was discussed using quantum-chemical simulation for Ti14O13 model. During application of the heating, the pressure decreased to 1 × 10 -10 atm and quickly increased to 1 × 10-5 atm and then oxygen emission peaks were observed. Furthermore, quantum-chemical simulation showed that Ti-O bonding of titanium oxide is anti-bonding and consists of 3d orbital. Copyright © 2010 MS&T'10®.


Hasegawa T.,Nagoya University | Sakuma S.,Nagoya University | Nanatani K.,Tohoku University | Uozumi N.,Tohoku University | Arai F.,Furo cho
2015 International Symposium on Micro-NanoMechatronics and Human Science, MHS 2015 | Year: 2015

We show the system for measuring the mechanical characteristics of single cyanobacteria, and the results of mechanical characterization of Synechocystis sp. PCC 6803. The system utilizes optical tweezers for transportation of the target cell to the measurement point, and a robot integrated microfluidic chip for applying one-directional deformation to a floating cell. © 2015 IEEE.


In this report, a control method for the stabilization of periodic orbits for a class of one- and two-dimensional discrete-time systems that are topologically conjugate to symbolic dynamical systems is proposed and applied to a population model in an ecosystem and the Smale horseshoe map. A periodic orbit is assigned as a target by giving a sequence in which symbols have periodicity. As a consequence, it is shown that any periodic orbits can be globally stabilized by using arbitrarily small control inputs. This work is a new attempt to systematically design a control system based on symbolic dynamics in the sense that one estimates the magnitude of control inputs and analyzes the Lyapunov stability.


Nishizawa N.,Furo cho | Sakakibara Y.,Japan National Institute of Advanced Industrial Science and Technology | Sakakibara Y.,Japan Science and Technology Agency | Itoga E.,Japan National Institute of Advanced Industrial Science and Technology | And 2 more authors.
Optics InfoBase Conference Papers | Year: 2011

Fiber based optical frequency comb was developed using polarization maintaining Er-doped ultrashort pulse fiber laser using polyimide film dispersed with single wall carbon nanotube. fceo was stable and locked with EO modulator and LD driver. © 2011 Optical Society of America.


Ishikawa T.,Furo cho | Ishiguro T.,Furo cho | Yukawa N.,Furo cho | Yoshida H.,20 1 Shintomi | Fujita N.,20 1 Shintomi
Key Engineering Materials | Year: 2013

In this research, micro void behavior of DPS, which has different phase volume fraction, is investigated experimentally. Prepared specimens have different amount of alloy element and heat treatment condition. Although both these specimens have almost the same strength and total elongation, these showed quite different local elongations, hole expanding ratio and bending ductility. In order to observe micro void behavior, specimens which have different strain levels are prepared. These sectional areas are observed by laser microscope after cutting and polishing. The change ratio of micro void volume fraction of DPS, which showed high local ductility, is lower than that of the other DPS. Concerning low ductility DPS, small size void (less than 3μm diameter) increases rapidly not only at grain boundary but in the ferrite grain, especially at initial stage of deformation. On the other hand, nucleation of micro void of high ductility DPS is inhibited. © (2013) Trans Tech Publications, Switzerland.


Tajima H.,Furo cho | Nakajima M.,Nagoya University | Fukuda T.,Furo cho | Fukuda T.,Nagoya University
2012 International Symposium on Micro-NanoMechatronics and Human Science, MHS 2012 | Year: 2012

The technique to construct an artificial organ is desired from drug development. Cells cultured two-dimensionally are in sufficient for use instead of organs of animals because of the loss of their signature properties such as metabolisms and adherence. Stacking of cell-sheet has limitation because of the difficulty of exchange of substances. Furthermore, three-dimensional cultures in biocompatible scaffold have a low survival ratio. We try to construct three-dimensional structure by assembling tubular cell-sheets which enable to perfuse culture medium. We report two methods to fabricate tubular cell-sheets. © 2012 IEEE.


Hayasaka K.,Furo cho
Journal of Physics: Conference Series | Year: 2011

We report the recent results of a search for lepton-flavor-violating τ decays and a search for CP violation in τ → νK 0 Sπ using a large data sample accumulated with the Belle detector at the KEKB asymmetric-energy e +e - collider. The sensitivity to these modes is significantly improved compared to previous experiments.


Terashima O.,Furo cho | Sakai Y.,Furo cho | Nagata K.,Furo cho | Ito Y.,Furo cho | Onishi K.,Furo cho
International Journal of Mechanical Sciences | Year: 2014

We performed simultaneous measurement of the three velocity components and the pressure in a plane turbulent jet as well as the verification of turbulence models related to the pressure diffusion process, such as the gradient-diffusion model and the model for the rapid and slow terms of the pressure diffusion term. The results show that the gradient-diffusion model developed in the previous studies are valid in the region where the turbulent intensity and the turbulent/non-turbulent intermittency are high and the production of the turbulent energy is dominant to the other processes such as the convection and diffusion of the turbulent energy in the turbulent energy budget. In addition, the pressure diffusion of the turbulent energy cannot be modeled accurately by using only the slow term, and its accuracy increases by considering both rapid and slow terms in the model. These results indicate that the modeling of the pressure diffusion process using only the slow term has a certain risk for causing a misunderstanding of the turbulent energy transport process. © 2014 Elsevier Ltd.


Suzuki T.K.,Furo cho
Space Science Reviews | Year: 2011

We review our recent results of Alfvén wave-driven winds. First, we present the result of self-consistent 1D MHD simulations for solar winds from the photosphere to interplanetary region. Here, we emphasize the importance of the reflection of Alfvén waves in the density stratified corona and solar winds. We also introduce the recent Hinode observation that might detect the reflection signature of transverse (Alfvénic) waves by Fujimura and Tsuneta (Astrophys. J. 702:1443, 2009). Then, we show the results of Alfvén wave-driven winds from red giant stars. As a star evolves to the red giant branch, the properties of stellar winds drastically change from steady coronal winds to intermittent chromospheric winds. We also discuss how the stellar evolution affects the wave reflection in the stellar atmosphere and similarities and differences of accretion disk winds by MHD turbulence. © 2010 Springer Science+Business Media B.V.


PubMed | Furo cho
Type: Journal Article | Journal: Current cardiology reviews | Year: 2010

Among the many cardiopulmonary reflexes, this review specifically examines the roles of the arterial baroreflex during the Bezold-Jarisch reflex (BJR). Activation of cardiopulmonary vagal afferent C-fibers induces hypotension, bradycardia, and apnea, which are known collectively as the BJR; myocardial ischemia and infarction might induce the BJR. Arterial baroreflex has been established as an important negative feedback system that stabilizes arterial blood pressure against exogenous pressure perturbations. Therefore, understanding the functions of the arterial baroreflex during the BJR is crucial for elucidating its pathophysiological implications. The main central pathways of the BJR and the baroreflex are outlined herein, particularly addressing the common pathway between the reflexes. Furthermore, the pathophysiological roles of the arterial baroreflex during the BJR are described along with a brief discussion of pathophysiological merits and shortcomings of the reflexes.

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