Hiroyuki Matsuura

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Our purpose is to study the effect on the blood flow caused by the valve in blood vessel. We examine the possibility that thrombosis is caused by pressing the artificial valve. We tried to solve the flow of blood by numerical analysis with an incompressibility Navier-Stokes equation. We supposed the static boundary condition about vessel shape, although(More)
Future Japanese population pyramid and death toll are similarity. According to the national census performed in last October, Japan entered population decline society. A trend of population of man and woman is shown until 2060. A calculation results are shown every five years. The population is classified in an age-grade every 5 years old. The population of(More)
This study analyzed the direct and indirect CO 2 emissions of the energy-intensive basic metals industry, in particular steels, using the distributions of various energy sources, including coal/peat, oil, and electricity, from an input–output table. An analysis of five major steel producing countries indicated that direct CO 2 emissions increased 1.4-fold(More)
Keywords – ultra-thin glass BGA package; mobile; via-first; high speed TCB. I. INTRODUCTION Increasing demands for mobility, functionality and performance in smart mobile systems have been driving off-chip interconnection pitches to below 40 µm. Pitch scaling is also accompanied by an increase in die and package sizes, raising concerns for chip-level(More)
Accurate evaluation of fall accidents is needed on the effect of protectors such as helmet or safety cap to reduce the shock from the impact to head is very important. We have done the experiment in JARI using human-type robot which simulates the human accidental injury. The precise data of acceleration has been taken from the robot, then HIC has been(More)
We discuss the structure of threshold corrections to soft supersymmetry-breaking parameters at the mass threshold of heavy chiral superfields. Nontrivial dependence on soft parameters of heavy matter fields originates from the 'physical' definition of the threshold scale, at which the general form of soft supersymmetry breaking is derived in the superfield(More)
The Macrobiotus hufelandi is a living thing that belongs to the Tardigrada. And, it is known as a living thing where it can live in the breaking point of the life for a long term. Because for Macrobiotus hufelandi's cell to endure turbulence. However, there are many uncertain points about the biological function mechanism. Authors researched; Ecology of(More)
We have the three biological discussions as for stochastic and dissipative equations. The first model belongs to the group of diffuse equations according to a kind of complex Fokker-Planck equation. The second one show the concrete stochastic model for actin-myosin system using stochastic resonance, and the last is stochastic or diffusional flagellar motor(More)
In order to understand the movement of actin-myosin system in muscle, we propose new model of stochastic inclined rods model (DS-SIRM). DS-SIRM has many inclined rods stood out from its body and it moves always forward to one direction whenever those rods are independently vibrating. DS-SIRM can convert the thermal noise to the one directional motion by(More)
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