Tsubakihara, K., Maekawa, H., Matsumiya, H., Ohnishi, A.
We develop a chiral SU(3) symmetric relativistic mean field (RMF) model with a logarithmic potential of scalar condensates. Experimental and empirical data of symmetric nuclear matter saturation...
Fries, R. J., Kunihiro, T., Müller, B., Ohnishi, A., Schäfer, A.
We review what is known about the contributions to the final entropy from the different stages of a relativistic nuclear collision, including recent results on the decoherence entropy and the entropy...
Emergence of hyperons in failed supernovae: trigger of the black hole formation (2008)
Sumiyoshi, K., Ishizuka, C., Ohnishi, A., Yamada, S., Suzuki, H.
We investigate the emergence of strange baryons in the dynamical collapse of a non-rotating massive star to a black hole by the neutrino-radiation hydrodynamical simulations in general relativity. By...
Do s-wave pions condensate in neutron stars ? (2008)
Ohnishi, A., Jido, D., Sekihara, T., Tsubakihara, K.
We examine possibilities of s-wave pion condensation in neutron stars by using the pion-nucleus optical potential U and the relativistic mean field (RMF) models. We compare pion-nucleus optical...
Search for a Ridge Structure Origin with Shower Broadening and Jet Quenching (2008)
Mizukawa, R., Hirano, T., Isse, M., Nara, Y., Ohnishi, A.
We investigate the role of jet and shower parton broadening by the strong colour field in the $\Delta\eta$-$\Delta\phi$ correlation of high $p_T$ particles. When anisotropic momentum broadening...
Brown-Rho Scaling in the Strong Coupling Lattice QCD (2008)
Ohnishi, A., Kawamoto, N., Miura, K.
We examine the Brown-Rho scaling for meson masses in the strong coupling limit of lattice QCD with one species of staggered fermion. Analytical expression of meson masses is derived at finite...
Tables of Hyperonic Matter Equation of State for Core-Collapse Supernovae (2008)
Ishizuka, C., Ohnishi, A., Tsubakihara, K., Sumiyoshi, K., Yamada, S.
We present sets of equation of state (EOS) of nuclear matter including hyperons using an SU_f(3) extended relativistic mean field (RMF) model with a wide coverage of density, temperature, and charge...
Effects of Quantum Fluctuations in Antisymmetrized Molecular Dynamics (2007)
Hirata Ohnishi, Y. Hirata, A. Ohnishi, Y. Nara, T. Harada, J. Randrup
Introduction Microscopic transport models in nuclear physics have been successfully applied to nuclear reactions. Among them, Antisymmetrized Molecular Dynamics (AMD) 1 takes account both of the...
Reactions Within The Quantum Molecular Dynamics Approach (2007)
Nara Ohnishi, Y. Nara, A. Ohnishi, T. Harada, S. Shinmura
this paper We study the global reaction mechanism.
Quantum Fluctuation Effects on Nuclear and Atomic Cluster Formation (2007)
A. Ohnishi, Jørgen Randrup, Y. Hirata, N. Otuka, Y. Nara, T. Harada
this report, we present the basic idea of the Quantal Langevin model and apply it to various fragmentation processes --- nuclear fragmentation and atomic cluster formation in
The Infrared Astronomical Mission AKARI (2007)
Murakami, H., Baba, H., Barthel, P., Clements, D. L., Cohen, M., Doi, Y., ...
AKARI, the first Japanese satellite dedicated to infrared astronomy, was launched on 2006 February 21, and started observations in May of the same year. AKARI has a 68.5 cm cooled telescope, together...
Ohnishi, A ., Kawamoto, N., Miura, K.
We study the phase diagram of quark matter at finite temperature (T) and chemical potential (μ) in the strong coupling region of lattice QCD for colour SU(3). Baryon has effects to extend the hadron...
Ohnishi, A ., Kawamoto, N., Miura, K.
We study the phase diagram of quark matter at finite temperature (T) and chemical potential (μ) in the strong coupling region of lattice QCD for colour SU(3). Baryon has effects to extend the hadron...
Strong coupling limit/region of lattice QCD (2007)
Ohnishi, A., Kawamoto, N., Miura, K., Tsubakihara, K., Maekawa, H.
We study the phase diagram of quark matter and nuclear properties based on the strong coupling expansion of lattice QCD. Both of baryon and finite coupling correction are found to have effects to...
Jet-fluid string formation and decay in high-energy heavy-ion collisions (2007)
Isse, M., Hirano, T., Mizukawa, R., Ohnishi, A., Yoshino, K., Nara, Y.
We propose a new hadronization mechanism, jet-fluid string (JFS) formation and decay, to understand observables in intermediate to high-$p_{T}$ regions comprehensively. In the JFS model, hard partons...
Ohnishi, A., Kawamoto, N., Miura, K.
We study the phase diagram of quark matter at finite temperature (T) and chemical potential (mu) in the strong coupling region of lattice QCD for color SU(3). Baryon has effects to extend the hadron...
Kawamoto, N., Miura, K., Ohnishi, A., Ohnuma, T.
We study the phase diagram of quark matter at finite temperature (T) and chemical potential (µ) in the strong coupling limit of lattice QCD for color SU(3). We derive an analytical expression of the...
Kawamoto, N., Miura, K., Ohnishi, A., Ohnuma, T.
We study the phase diagram of quark matter at finite temperature (T) and chemical potential (µ) in the strong coupling limit of lattice QCD for color SU(3). We derive an analytical expression of the...
Existence of Density Functionals for Excited States and Resonances (2006)
Giraud, B. G., Kato, K., Ohnishi, A., Rombouts, S. M. A.
We show how every bound state of a finite system of identical fermions, whether a ground state or an excited one, defines a density functional. Degeneracies created by a symmetry group can be...
Elliptic flow in a hadron-string cascade model at 130 GeV energy (2006)
SAHU, P. K., OHNISHI, A., ISSE, M., OTUKA, N., PHATAK, S. C.
We present the analysis of elliptic flow at √s = 130 A GeV energy in a hadron-string cascade model. We find that the final hadronic yields are qualitatively described. The elliptic flow v2 is...
Elliptic flow in a hadron-string cascade model at 130 GeV energy (2006)
SAHU, P. K., OHNISHI, A., ISSE, M., OTUKA, N., PHATAK, S. C.
We present the analysis of elliptic flow at √s = 130 A GeV energy in a
Elliptic flow in a hadron-string cascade model at 130 GeV energy (2006)
SAHU, P. K., OHNISHI, A., ISSE, M., OTUKA, N., PHATAK, S. C.
We present the analysis of elliptic flow at √s = 130 A GeV energy in a
Isse, M., Ohnishi, A., Otuka, N., Sahu, P. K., Nara, Y., 一瀬, 昌嗣
Collective flows in heavy-ion collisions from AGS [(2–11)A GeV] to SPS [(40, 158)A GeV] energies are investigated in a nonequilibrium transport model with the nuclear mean field (MF). Sideward...
Isse, M., Ohnishi, A., Otuka, N., Sahu, P. K., Nara, Y.
Collective flows in heavy-ion collisions from AGS [(2–11)A GeV] to SPS [(40, 158)A GeV] energies are
Isse, M., Ohnishi, A., Otuka, N., Sahu, P. K., Nara, Y.
Collective flows in heavy-ion collisions from AGS [(2–11)A GeV] to SPS [(40, 158)A GeV] energies are
Kawamoto, N., Miura, K., Ohnishi, A., Ohnuma, T.
We study the phase diagram of quark matter at finite temperature (T) and finite chemical potential (mu) in the strong coupling limit of lattice QCD for color SU(3). We derive an analytical expression...
Hadron-string cascade versus hydrodynamics in Cu+Cu collisions at $\sqrt{s_{NN}}=200$ GeV (2005)
Hirano, T., Isse, M., Nara, Y., Ohnishi, A., Yoshino, K.
Single particle spectra as well as elliptic flow in Cu+Cu collisions at $\sqrt{s_{NN}}=200$ GeV are investigated within a hadronic cascade model and an ideal hydrodynamic model. Pseudorapidity...
Complex Scaled Spectrum Completeness for Coupled Channels (2005)
Giraud, B. G., Kato, K., Ohnishi, A.
The Complex Scaling Method (CSM) provides scattering wave functions which regularize resonances and suggest a resolution of the identity in terms of such resonances, completed by the bound states and...
Isse, M., Ohnishi, A., Otuka, N., Sahu, P. K., Nara, Y.
Collective flows in heavy-ion collisions from AGS ($(2-11)A$ GeV) to SPS ($(40,158)A$ GeV) energies are investigated in a nonequilibrium transport model with nuclear mean-field (MF). Sideward $$,...
Hadron-string cascade versus hydrodynamics in Cu+Cu collisions at √sNN = 200 GeV (2005)
Hirano, T., Isse, M., Nara, Y., Ohnishi, A., Yoshino, K.
Single particle spectra as well as elliptic flow in Cu+Cu collisions at √sNN =200 GeV are investigated within a hadronic cascade model and an ideal hydrodynamic model. Pseudorapidity distribution...
Hadron-string cascade versus hydrodynamics in Cu+Cu collisions at √sNN = 200 GeV (2005)
Hirano, T., Isse, M., Nara, Y., Ohnishi, A., Yoshino, K.
Single particle spectra as well as elliptic flow in Cu+Cu collisions at √sNN =200 GeV are investigated within a hadronic cascade model and an ideal hydrodynamic model. Pseudorapidity distribution...
Hadron-string cascade versus hydrodynamics in Cu+Cu collisions at √sNN = 200 GeV (2005)
Hirano, T., Isse, M., Nara, Y., Ohnishi, A., Yoshino, K.
Single particle spectra as well as elliptic flow in Cu+Cu collisions at √sNN =200 GeV are investigated within a hadronic cascade model and an ideal hydrodynamic model. Pseudorapidity distribution...
Preparation and characterization of chiral zerovalent organoruthenium aqua complexes (2005)
Ura, Y, Tsunawaki, F, Wada, K, Shiotsuki, M, Kondo, T, Yamaguchi, S, ...
Radial, sideward and elliptic flow at AGS energies (2003)
We study the baryon transverse in-plane (sideward) and elliptic flow from SIS to AGS energies for Au+_Au collisions in a relativistic dynamical simulation model that includes all baryon resonances up...
Radial, sideward and elliptic flow at AGS energies (2003)
We study the baryon transverse in-plane (sideward) and elliptic flow from SIS to AGS energies for Au+_Au collisions in a relativistic dynamical simulation model that includes all baryon resonances up...
Radial, sideward and elliptic flow at AGS energies (2003)
We study the baryon transverse in-plane (sideward) and elliptic flow from SIS to AGS energies for Au+_Au collisions in a relativistic dynamical simulation model that includes all baryon resonances up...
Liquid-Gas Phase Transition of Supernova Matter and Its Relation to Nucleosynthesis (2002)
Ishizuka, C., Ohnishi, A., Sumiyoshi, K.
We investigate the liquid-gas phase transition of dense matter in supernova explosion by the relativistic mean field approach and fragment based statistical model. The boiling temperature is found to...
Systematic Study of Elliptic Flow at RHIC Energy (2002)
Sahu, P. K., Otuka, N., Ohnishi, A.
We study the elliptic flow systematically from SIS to RHIC energies in a realistic dynamical cascade model. We compile our results with the recent data from STAR and PHOBOS experiments on elliptic...
Sideward Peak of Intermediate Mass Fragments in High Energy Proton Induced Reactions (2001)
Hirata, Yuichi, Ohnishi, A., Nara, Y., Kido, T., Maruyama, Toshiki, Otuka, N., ...
Intermediate mass fragment (IMF) formation in the 12 GeV proton induced reaction on Au target is analyzed by using a combined framework of a transport model (JAM/MF) and a newly developed...
Re-Hardening of Hadron Transverse Mass Spectra in Relativistic Heavy-Ion Collisions (2001)
Otuka, N., Sahu, P. K., Isse, M., Nara, Y., Ohnishi, A.
We analyze the spectra of pions and protons in heavy-ion collisions at relativistic energies from 2 A GeV to 65+65 A GeV by using a jet-implemented hadron-string cascade model. In this energy region,...
SU(2) Chiral sigma model and the properties of neutron stars (2000)
We discuss the {\it SU}(2) chiral sigma model in the context of nuclear matter using a mean field approach at high density. In this model we include a dynamically generated isoscalar vector field and...
Baryon flow from SIS to AGS energies (1999)
Sahu, P. K., Cassing, W., Mosel, U., Ohnishi, A.
We analyze the baryon sideward and elliptic flow from SIS (0.25 $\sim$ 2 A GeV) to AGS (2 $\sim 11.0A$GeV) energies for Au + Au collisions in the relativistic transport model RBUU that includes all...
Nara, Y., Otuka, N., Ohnishi, A., Niita, K., Chiba, S.
A hadronic cascade model based on resonances and strings is used to study mass dependence of relativistic nuclear collisions from p+Be to Au+Au at AGS energies ($\sim 10\AGeV$) systematically. Hadron...
Can We Extract Lambda-Lambda Interaction from Two-Particle Momentum Correlation ? (1999)
Ohnishi, A., Hirata, Y., Nara, Y., Shinmura, S., Akaishi, Y.
We analyze the invariant mass spectrum of Lambda-Lambda in $^{12}C(K^-,K^+ Lambda Lambda)$ reaction at P(K^+)=1.65 GeV/c by using a combined framework of IntraNuclear Cascade (INC) model and the...
Quantum fluctuation effects on hyperfragment formation from Xi^- absorption at rest on 12C (1997)
Hirata, Y., Nara, Y., Ohnishi, A., Harada, T., Randrup, J.
Formation mechanisms of single, twin, and double hypernuclei from Xi^- absorption at rest on 12C are investigated with an refined microscopic transport model, that incorporates the recently developed...
Branching ratio change in K- absorption at rest and the nature of the Lambda(1405) (1997)
Ohnishi, A., Nara, Y., Koch, V.
We investigate in-medium corrections to the branching ratio in K- absorption at rest and their effect on the (positively and negatively) charged pion spectrum. The in-medium corrections are due to...
Quantum Fluctuations Affect the Critical Properties of Noble Gases (1996)
Interacting argon atoms are simulated with a recently developed quantum Langevin transport treatment that takes approximate account of the quantum fluctuations inherent in microscopic many-body...
Quantum Fluctuation Effects on Nuclear Fragment Formation (1996)
Multifragmentation in Au+Au collisions is investigated at incident energies in the range 100-400 MeV per nucleon by means of a recently developed quantal Langevin model. The inclusion of quantum...
K^+ momentum spectrum from (K^-,K^+) reactions in intranuclear cascade model (1996)
Nara, Y., Ohnishi, A., Harada, T., Engel, A.
In a framework of intranuclear cascade (INC) type calculation, we study a momentum spectrum in reactions \KK at a beam momentum of 1.65 GeV/c. INC model calculations are compared with the...
Inclusion of Quantum Fluctuations in Wave Packet Dynamics (1996)
We discuss a method by which quantum fluctuations can be included in microscopic transport models based on wave packets that are not energy eigenstates. By including the next-to-leading order term in...
Antisymmetrization of a Mean Field Calculation of the T-Matrix (1994)
Wierling, A., Giraud, B. G., Mekideche, F., Horiuchi, H., Maruyama, T., Ohnishi, A., ...
The usual definition of the prior(post) interaction $V(V^\prime )$ between projectile and target (resp. ejectile and residual target) being contradictory with full antisymmetrization between...
Ono, A., Horiuchi, H., Maruyama, T., Ohnishi, A.
Momentum distribution of fragments produced in 12C+12C reaction at 28.7 MeV/nucleon is analyzed with antisymmetrized version of molecular dynamics (AMD). Calculations are made for several cases of...
Ohnishi, A, Sato, Y, Nagara, H, Sakai, T, Iwashita, H, Kuroiwa, Y, ...
In three cases of chorea-acanthocytosis (acanthocytosis and neurological disease, or familial degeneration of the basal ganglia with acanthocytosis), biopsies of short peroneal muscles and sural...
Overberger, C. G., Ohnishi, A., Gomes, A. S.
A study of the optical rotatory dispersion (ORD), circular dichroism (CD), and ultraviolet spectra (UV) of polyamides derived from optically active biphenyl acid chlorides, and aromatic, and...
Overberger, C. G., Yoshimura, T., Ohnishi, A., Gomes, A. S.
The preparation of polyamides from derivatives of optically active biphenic acid is described. The diacid chlorides chosen were 2,2′-dinitro-6,6′-dimethylbiphenyl-4,4′-dicarbonyl chloride and...
Sodium status influences chronic amphotericin B nephrotoxicity in rats.
Ohnishi, A, Ohnishi, T, Stevenhead, W, Robinson, R D, Glick, A, O'Day, D M, ...
The nephrotoxic potential of amphotericin B (5 mg/kg per day intraperitoneally for 3 weeks) has been investigated in salt-depleted, normal-salt, and salt-loaded rats. In salt-depleted rats,...
Koizumi, F, Ohnishi, A, Takemura, H, Okubo, S, Kagami, T, Tanaka, T
To ascertain whether monitoring of the concentrations of ofloxacin in saliva during a course of treatment is more suitable and safer than that of its levels in blood, we simultaneously monitored its...
Role of sodium in the protective effect of ticarcillin on gentamicin nephrotoxicity in rats.
Ohnishi, A, Bryant, T D, Branch, K R, Sabra, R, Branch, R A
Coadministration of sodium ticarcillin with an aminoglycoside is known to reduce the nephrotoxicity of the aminoglycoside. However, it is not known whether the penicillin or the obligatory sodium...
Potent aquaretic agent. A novel nonpeptide selective vasopressin 2 antagonist (OPC-31260) in men.
Ohnishi, A, Orita, Y, Okahara, R, Fujihara, H, Inoue, T, Yamamura, Y, ...
Solute-free water diuretics (aquaretics) by antagonizing hydrosmotic vasopressin receptors (V2) may be useful in treating water-retaining diseases. The effects of intravenous administration of a...
Chronic caffeine administration exacerbates renovascular, but not genetic, hypertension in rats.
Ohnishi, A, Branch, R A, Jackson, K, Hamilton, R, Biaggioni, I, Deray, G, ...
The purpose of this study was to determine whether or not caffeine would exacerbate renovascular hypertension. Therefore, we examined the effects of chronic caffeine administration on arterial blood...
Ohnishi, A, Li, P, Branch, R A, Holycross, B, Jackson, E K
The purpose of this study was to determine if caffeine augments the slow-pressor response to chronic low-dose infusions of angiotensin II (AII) or the rapid-pressor response to acute infusions of...
New pteridine substrates for dihydropteridine reductase and horseradish peroxidase.
Armarego, W L, Ohnishi, A, Taguchi, H
The oxidation of 4,5-diaminopyrimidin-6(1H)-one, 5,6,7,8-tetrahydropteridin-4(3H)-one, its 6-methyl and cis-6,7-dimethyl derivatives, and 6-methyl- and cis-6-7-dimethyl-5,6,7,8-tetrahydropterins, by...
Sodium status influences chronic amphotericin B nephrotoxicity in rats.
Ohnishi, A, Ohnishi, T, Stevenhead, W, Robinson, R D, Glick, A, O'Day, D M, ...
The nephrotoxic potential of amphotericin B (5 mg/kg per day intraperitoneally for 3 weeks) has been investigated in salt-depleted, normal-salt, and salt-loaded rats. In salt-depleted rats,...
Koizumi, F, Ohnishi, A, Takemura, H, Okubo, S, Kagami, T, Tanaka, T
To ascertain whether monitoring of the concentrations of ofloxacin in saliva during a course of treatment is more suitable and safer than that of its levels in blood, we simultaneously monitored its...
Role of sodium in the protective effect of ticarcillin on gentamicin nephrotoxicity in rats.
Ohnishi, A, Bryant, T D, Branch, K R, Sabra, R, Branch, R A
Coadministration of sodium ticarcillin with an aminoglycoside is known to reduce the nephrotoxicity of the aminoglycoside. However, it is not known whether the penicillin or the obligatory sodium...
Potent aquaretic agent. A novel nonpeptide selective vasopressin 2 antagonist (OPC-31260) in men.
Ohnishi, A, Orita, Y, Okahara, R, Fujihara, H, Inoue, T, Yamamura, Y, ...
Solute-free water diuretics (aquaretics) by antagonizing hydrosmotic vasopressin receptors (V2) may be useful in treating water-retaining diseases. The effects of intravenous administration of a...
Chronic caffeine administration exacerbates renovascular, but not genetic, hypertension in rats.
Ohnishi, A, Branch, R A, Jackson, K, Hamilton, R, Biaggioni, I, Deray, G, ...
The purpose of this study was to determine whether or not caffeine would exacerbate renovascular hypertension. Therefore, we examined the effects of chronic caffeine administration on arterial blood...
Ohnishi, A, Li, P, Branch, R A, Holycross, B, Jackson, E K
The purpose of this study was to determine if caffeine augments the slow-pressor response to chronic low-dose infusions of angiotensin II (AII) or the rapid-pressor response to acute infusions of...
New pteridine substrates for dihydropteridine reductase and horseradish peroxidase.
Armarego, W L, Ohnishi, A, Taguchi, H
The oxidation of 4,5-diaminopyrimidin-6(1H)-one, 5,6,7,8-tetrahydropteridin-4(3H)-one, its 6-methyl and cis-6,7-dimethyl derivatives, and 6-methyl- and cis-6-7-dimethyl-5,6,7,8-tetrahydropterins, by...
Ohnishi, A, Minegishi, A, Sasaki, T, Suganuma, T, Ishizaki, T
The time-course of plasma noradrenaline (NA) and adrenaline (A) concentrations and their dissipation profiles were examined concomitantly with heart rate changes after strenuous exercise in eight...
The role of weakness of triceps surae muscles in astasia without abasia.
Hachisuka, K, Ohnishi, A, Yamaga, M, Dozono, K, Ueta, M, Ogata, H
OBJECTIVE: To investigate the role of weakness of the bilateral triceps surae muscles-the gastrocnemius and soleus muscles-in astasia without abasia and whether compensating for muscle weakness with...
Ohnishi, A, Sato, Y, Nagara, H, Sakai, T, Iwashita, H, Kuroiwa, Y, ...
In three cases of chorea-acanthocytosis (acanthocytosis and neurological disease, or familial degeneration of the basal ganglia with acanthocytosis), biopsies of short peroneal muscles and sural...
Acute autonomic and sensory neuropathy associated with elevated Epstein-Barr virus antibody titre.
Fujii, N, Tabira, T, Shibasaki, H, Kuroiwa, Y, Ohnishi, A, Nagaki, J
Oculopharyngeal involvement in familial neurogenic muscular atrophy
Matsunaga, M., Inokuchi, T., Ohnishi, A., Kuroiwa, Y.
A Japanese family with progressive spinal muscular atrophy is presented. Seven members in two generations were affected and the mode of inheritance was probably an autosomal recessive trait. A...
Ohnishi, A, Inoue, N, Yamamoto, T, Murai, Y, Hori, H, Koga, M, ...
Wistar rats subjected to a single exposure lasting six hours to ethylene oxide (EO) at a concentration of 500 parts per million three times a week for 13 weeks developed ataxia in the hindlegs....