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- Masako Yamada, Stefano Mossa, H. Eugene Stanley, Francesco Sciortino
- Physical review letters
- 2002

We study the new water model proposed by Mahoney and Jorgensen [J. Chem. Phys. 112, 8910 (2000)], which is closer to real water than previously proposed classical pairwise additive potentials. We simulate the model in a wide range of deeply supercooled states and find (i) the existence of a nonmonotonic "nose-shaped" temperature of maximum density line and… (More)

- Masako Yamada
- 2008

Shell models of turbulence have been employed as toy models which, in their chaotic states, show statistical properties similar to real fluid turbulence, including Kolmogorov energy spectrum and intermittency. These models are interesting because, at the present stage, it is still quite difficult or almost impossible to study relations between those… (More)

- Issei Kobayashi, Masako Yamada, Yuhko Kobayashi
- Journal of General Plant Pathology
- 2007

To determine whether Ca2+ promotes powdery mildew penetration, Ca2+-treated barley coleoptiles were inoculated with conidia of pathogenic and nonpathogenic fungi. Penetration efficiency of the pathogenic powdery mildew Blumeria graminis was enhanced by Ca2+ treatment, but that of the necrotrophic pathogen Helminthosporium sp. remained unaffected. Similarly,… (More)

- Masako Yamada, H. Eugene Stanley, Francesco Sciortino
- Physical review. E, Statistical, nonlinear, and…
- 2003

To study the coexistence of two liquid states of water within one simulation box, we implement an equilibrium sedimentation method--which involves applying a gravitational field to the system and measuring or calculating the resulting density profile in equilibrium. We simulate a system of particles interacting via the Stillinger-2 (ST2) potential, a model… (More)

We investigate the thermal and dynamical evolution of primordial gas clouds in the universe after decoupling. Comparing the time-scale of dynamical evolution with that of fragmentation, we can estimate the typical fragmentation scale. We propose the following scenario of the formation process of first luminous objects consisting of large number stars.… (More)

Results of three-dimensional (3D) numerical simulations of field-reversed configurations (FRCs) are presented. The emphasis of this work is on the nonlinear evolution of magnetohydrodynamic (MHD) instabilities in kinetic FRCs and the new FRC formation method by counter-helicity spheromak merging. Kinetic simulations show nonlinear saturation of the n = 1… (More)

- Hajime Susa, Hideya Uehara, +5 authors Masako Yamada
- 2007

We re-examine the thermal evolution of the postshock layer in primordial gas clouds. Comparing the time scales, we nd that the evolutionary paths of postshock regions in primordial gas clouds are basically understood by the diagram drawn on ionization degree v.s. temperature plane. The results obtained from the diagram are independent of the density, in… (More)

Anomalous behavior of water has been a long standing problem in physical and chemical sciences. The seeming divergence of response functions such as specific heat, compressibility, and coefficient of thermal expansion at low temperatures T , have been interpreted by some authors as the evidences for the liquid-gas spinodal retracing back to positive… (More)

- Masako Yamada, Kohei Ishikawa, Hiroko Terasaki
- Retina
- 2005

- Masako Yamada
- 2001

We investigate the non-gravitational heating of hot gas in clusters of galaxies (intracluster medium; ICM) on the assumption that the gas is heated well before cluster formation (’preheating’). We examine the jet activities of radio galaxies as the sources of excess energy in ICM, and the deformation of the cosmic microwave background (the… (More)