


Hiizu Nakanishi | Last modified date:2020.06.29 |

Graduate School
Undergraduate School
Homepage
https://kyushu-u.pure.elsevier.com/en/persons/hiizu-nakanishi
Reseacher Profiling Tool Kyushu University Pure
http://www.stat.phys.kyushu-u.ac.jp/
Academic Degree
Doctor of Science
Country of degree conferring institution (Overseas)
No
Field of Specialization
Theoretical Physics
Total Priod of education and research career in the foreign country
02years00months
Outline Activities
Statistical physics, dynamics of macroscopic systems such as fracture dynamics and granular physics, soft matter physics, biophysics.
Research
Research Interests
- Shear thickening oscillation of dilatant fluid
keyword : dilatant fluid, shear thickening
2014.04~2019.03. - dynamics of sand dune
keyword : sand dune
2013.09~2019.12. - Dynamics of Active Matter
keyword : active matter
2017.04~2019.03. - Paper crumpling
keyword : paper, crumpling
2014.04~2019.03. - Construction of simulation model for 2-dimensional injection type chemical garden experiment
keyword : chemical garden
2015.04~2016.03. - Dynamics of rattleback
keyword : rattleback
2015.04~2018.03. - Structural transition of a semiflexible polymer chain confined in a nanochannel
keyword : semiflexible polymer, nanochannel
2015.09~2016.12. - Droplets on hot water
keyword : droplets
2014.04~2015.04. - dynamics of 2-d tethered network
keyword : tethered network
2012.09~2014.03. - crumpling of paper sheet
keyword : paper crumpling
2013.09~2014.03. - micro droplets on hot water surface
keyword : micro droplet
2012.03~2014.03. - Shear thickening oscillation in dilatant fluid
keyword : shear thickening oscillation
2012.03~2013.12. - Fluid dynamics of dilatant fluids
keyword : shear thickening
2011.03~2012.12. - Hamilton-Jacobi method for molecular master equation
keyword : molecular master equation, Hamilton-Jacobi method
2011.03~2013.07. - molecular fluctuation effects on circadian rhythm
keyword : circadian rhythm, molecular fluctuation
2011.03~2012.12. - Ring polymer absorbed on solid surface
keyword : ring polymer
2010.10~2012.05. - DNA elongation in gel under oscillatory electric field
keyword : DNA, elongation
2010.12~2012.05. - Inelastic Collapse in Granular Slope Flow --- one dimensional model ---
keyword : granular slope flow, inelastic collapse
2010.05~2011.05. - Entrainment of Circadian Rhythm by Periodic External Light Stimuli in Biological Model and Phase Model
keyword : Circadian rhythm
2010.05~2011.05. - Stochasticity in genetic regulation
keyword : stochasticity, gentetic regulation
2010.05~2011.05. - Model for a dialect propagation
keyword : dialect, propagation, model
2010.03~2011.05. - Rheology of Dilatant Fluid
keyword : shear thickening, principle of dilatancy, granular, dilatant fluid
2009.04~2012.05. - Schramm-Loewner evolution for the percolation near criticality.
keyword : SLE, Brownian motion, percolation
2007.05~2009.05We numerically study the Loewver driving function $U_t$ for off-critical percolation cluster boundaries on the triangular lattice. It is found that the driving function undergoes a random walk with a finite drift. . - Statistical properties of a polymer chain in the theta solvent.
keyword : polymer, theta solvent, structure factor, ideal chain
2007.05~2009.05We study configuration of a single polymer in a theta solvent using Monte Carlo simulation on the bond fluctuation model. The bond correlation function is shown to fit the finite size scaling by the power law with the exponent $-3/2$ at the theta point, which is determined by the scaling behavior of the radius of gyration. The structure factor of a single polymer configuration at the theta point deviates from that of an ideal chain in the scaling range $1/R_g- Genetic switch of bacteriophage TP90101
keyword : genetic switch, bacterio phage, gene expression
2007.09~2009.05The lytic-lysogenic switch of the temperate lactococcal phage TP901-1 is fundamentally different from that of phage lambda. In phage TP901-1, the lytic promoter PL is repressed by CI whereas repression of the lysogenic promoter PR requires the presence of both of the antagonistic regulator proteins, MOR and CI. We model the central part of the switch and compare the case where \PR repression is conducted by the two regulators interacting only on the DNA, and the case where the two regulators form a heteromer complex in the cytoplasm prior to DNA binding. The models are analyzed for bistability, and the predicted promoter repression folds are compared to experimental data. We conclude that the experimental data are best reproduced if a heteromer complex forms in solution before binding to DNA. We further find that CI sequestration by the formation of MOR:CI complexes in cytoplasm makes the genetic switch robust..- Rheology of Wet Granular Media
keyword : granular material, rheology
2008.04~2009.05We study response of wet granular media against shear with various liquid content by molecular dynamics simulations. In the wet granular media with small liquid content, liquid forms a liquid bridge at each contact point, which induce two-body cohesive force due to the surface tension. As the liquid content increases, some liquid bridges merge, and more than two grains interact through a single liquid cluster. We propose a simple model that take into account the many-body interaction through a liquid cluster. In our model, the cohesive force acts between the grains connected by the liquid-gas interface. As the liquid content is increased, the number of grains that interact through the liquid increase, but the liquid-gas interface may decrease when the liquid cluster is formed. This competition results in the shear stress that shows a maximum in the liquid-content dependence.. - Genetic switch of bacteriophage TP90101
Papers
Educational


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