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Search Results: 1 - 10 of 481 matches for " Hirano "
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Chromosome Territories Meet a Condensin
Tatsuya Hirano
PLOS Genetics , 2012, DOI: 10.1371/journal.pgen.1002939
Alcohol Consumption and Oxidative DNA Damage
Takeshi Hirano
International Journal of Environmental Research and Public Health , 2011, DOI: 10.3390/ijerph8072895
Abstract: To examine the effects of alcohol consumption on cancer risk, we measured oxidative DNA damage and its repair activity in the livers and esophagi of rats fed with ethanol. Using our previously designed protocol for feeding rats with a high concentration of ethanol, we examined the effects of ethanol consumption on 8-oxo-Gua generation and repair activity in the livers and esophagi of rats. We found that a high concentration of ethanol accompanied with a vitamin-depleted diet increased 8-oxo-Gua and its repair activity. 8-Oxo-Gua is known to induce point mutations, leading to carcinogenesis. Therefore, these results suggested that a high concentration of ethanol and an irregular diet increased liver and esophageal cancer risk. On the other hand, we showed that a low concentration of ethanol decreased 8-oxo-Gua and its repair activity in the livers of mice treated with a carcinogen. Taken together, the effects of ethanol consumption on cancer risk depend on the ethanol concentration and the diet pattern.
Política e economia como formas de domina??o: o trabalho intelectual em Marx
Hirano, Sedi;
Tempo Social , 2001, DOI: 10.1590/S0103-20702001000200001
Abstract: this essay aims at systematizing the theoretical analysis that marx makes of pre-capitalism and of capitalism as social structures of power, bearing in mind that political relations predominate in the former and economic relations in the latter as forms of domination. in pre-capitalism, political power and the monopolized exercise of physical, social and psychological violence are determined by the manner in which social agents appropriate objective, material and symbolic conditions of social production. in capitalism, production, when it is already commanded by capital, on top of producing surplus value, it also produces a system of general exploitation of the natural and human properties with the support of science. in other words, it fulfills the appropriation through science and not violence or personal power, putting scientific knowledge at its service, in the form of fixed capital. this extraction of surplus value takes on the form of scientific activity, in spite of being a result of the economic relationship. it is within this context that the analysis of intellectual labor is made, not only as value producer, but also as producer of concepts to justify the historical forms of power and of capitalist domination.
Relativistic Hydrodynamics at RHIC and LHC
Hirano, Tetsufumi
High Energy Physics - Phenomenology , 2007, DOI: 10.1143/PTPS.168.347
Abstract: Recent development of a hydrodynamic model is discussed by putting an emphasis on realistic treatment of the early and late stages in relativistic heavy ion collisions. The model, which incorporates a hydrodynamic description of the quark-gluon plasma with a kinetic approach of hadron cascades, is applied to analysis of elliptic flow data at the Relativistic Heavy Ion Collider energy. It is predicted that the elliptic flow parameter based on the hybrid model increases with the collision energy up to the Large Hadron Collider energy.
Existence of positive entire solutions of semilinear elliptic equations on RN
N. Hirano
Abstract and Applied Analysis , 1996, DOI: 10.1155/s1085337596000036
Elliptic Flow Based on a Relativistic Hydrodynamic Model
Tetsufumi Hirano
Physics , 1999,
Abstract: Based on the (3+1)-dimensional hydrodynamic model, the space-time evolution of hot and dense nuclear matter produced in non-central relativistic heavy-ion collisions is discussed. The elliptic flow parameter v_2 is obtained by Fourier analysis of the azimuthal distribution of pions and protons which are emitted from the freeze-out hypersurface. As a function of rapidity, the pion and proton elliptic flow parameters both have a peak at midrapidity.
Hydrodynamic analysis of heavy ion collisions at RHIC
Tetsufumi Hirano
Physics , 2008, DOI: 10.1088/0954-3899/36/6/064031
Abstract: Current status of dynamical modeling of relativistic heavy ion collisions and hydrodynamic description of the quark gluon plasma is reported. We find the hadronic rescattering effect plays an important role in interpretation of mass splitting pattern in the differential elliptic flow data observed at RHIC. To demonstrate this, we predict the elliptic flow parameter for phi mesons to directly observe the flow just after hadronisation. We also discuss recent applications of outputs from hydrodynamic calculations to J/psi suppression, thermal photon radiation and heavy quark diffusion.
What can we learn from hydrodynamic analysis of elliptic flow?
Tetsufumi Hirano
Physics , 2005, DOI: 10.1016/j.nuclphysa.2006.06.025
Abstract: We can establish a new picture, the perfect fluid sQGP core and the dissipative hadronic corona, of the space-time evolution of produced matter in relativistic heavy ion collisions at RHIC. It is also shown that the picture works well also in the forward rapidity region through an analysis based on a new class of the hydro-kinetic model and is a manifestation of deconfinement.
Hydrodynamic models
Tetsufumi Hirano
Physics , 2004, DOI: 10.1088/0954-3899/30/8/025
Abstract: Recent developments based on relativistic hydrodynamic models in high energy heavy ion collisions are discussed. I focus especially on how hydrodynamics works at RHIC energies and how one can use the most of it in analyses of jet quenching and thermal electromagnetic radiations. I also comment on improvement of initial conditions and viscosity in hydrodynamic models.
Hydrodynamic Approaches to Relativistic Heavy Ion Collisions
Tetsufumi Hirano
Physics , 2004,
Abstract: We give a short review about the hydrodynamic model and its application to the elliptic flow phenomena and the pion interferometry in relativistic heavy ion collisions.
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