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Search Results: 1 - 10 of 325865 matches for " S. Sahu "
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Low Density Instability in Asymmetric Nuclear Matter Using Pion Dressing  [PDF]
S. K. Sahu
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.69140
Abstract: We study the asymmetric nuclear matter in a nonperturbative manner. The bulk nuclear matter studied by the consistent exchange of σ, ω and π mesons is used to investigate its stability. The equation of state (EOS) at zero temperature is considered to study the symmetry energy, curvature parameter of symmetry energy and asymmetry energy. The effect of the density dependence of the symmetry energy on instability property is investigated and analyzed using proton fraction in the nuclear matter. Here a microscopic density-dependent model of the nucleon-meson coupling is used to reexamine the instability of asymmetric nuclear matter.
Spectroscopy of MACHO 97-SMC-1: self-lensing within the SMC
Kailash C. Sahu,M. S. Sahu
Physics , 1998, DOI: 10.1086/311746
Abstract: More than a dozen microlensing events have been detected so far towards the LMC and 2 towards the SMC. If all the lenses are in the Galactic halo, both the LMC and the SMC events are expected to have similar time scales. However, the first event towards the SMC, MACHO 97-SMC-1, had a time scale of 123 days which is much larger than the typical time scale for the LMC events. From optical depth estimates, we first show that the stars within the SMC play a dominant role as gravitational lenses and can fully account for the observed microlensing events, mainly due to its large physical depth. We also show that if the lenses are within the Magellanic Clouds, then the SMC events should be longer in duration than the LMC events, a fact that is consistent with the observations. The time scale of the event implies that the mass of the lens is >2 solar masses if it is in the Milky Way disk or halo, in which case the lens is expected to be bright and should reveal itself in the spectrum. Here, we present an optical spectrum of MACHO 97-SMC-1 which shows that the lens is not in the Milky Way disk or halo, but is a low-mass star within the SMC. It is worth noting here that MACHO SMC-98-1 is the only OTHER observed event towards the SMC. This was a binary lens event where the caustic crossing time-scale as observed by PLANET, MACHO, EROS and OGLE collaborations, suggests that the lens is within the SMC. Furthermore, the only LMC event where the location of the lens is known is the binary lens event MACHO LMC-9, for which the lens is also within the LMC. Thus, ALL the 3 microlensing events towards the Magellanic Clouds for which we have independent knowledge of the location of the lenses are due to self-lensing within the Magellanic Clouds.
Factors influencing maternal health in Rewa town
Sahu Divya,Kushwah S
Indian Journal of Community Medicine , 2007,
Abstract:
Yet another year and a new report from the editors
Bavdekar S,Sahu D
Journal of Postgraduate Medicine , 2006,
Abstract:
Interstellar absorption lines in the spectrum of the starburst galaxy NGC 1705
M. S. Sahu
Physics , 1998, DOI: 10.1086/300524
Abstract: I present a GHRS archival study of the interstellar absorption lines in the line-of-sight to the HI-rich starburst dwarf galaxy NGC 1705, in the 1170 to 1740A range at ~ 120 km/s resolution. The absorption features arising due to photospheric lines are distinctly different from the interstellar lines. The interstellar lines consist of three relatively narrow components at LSR velocities of -20, 260 and 540 km/s and include absorption by neutral atoms, singly ionized atoms and atoms in higher ionization states. The analysis presented in this paper consists of (1) a list of all interstellar absorption features with > 3 sigma significance and their measured equivalent widths and (2) plots of the lines in the various atomic species together with the results of non-linear least square fit profiles to the observed data and (3) unpublished 21-cm maps from the Wakker & van Woerden survey showing the large-scale HI distribution in the region near the NGC 1705 sightline and high velocity cloud HVC 487. Further, I report weak N I 1200A triplet absorption for the supershell component, which in the absence of dust depletion and ionization corrections implies a low N abundance. A low N abundance for the supershell is consistent with an interpretation of nucleosynthetic enrichment by time-delayed "primary" nitrogen production, the age estimate of 10 - 20 x 10^6 years for the central superstar cluster NGC 1705-1 (Heckman and Leitherer, 1997) and the underabundance of Fe reported by Sahu and Blades (1997).
On Kantowski-Sachs Viscous Fluid Model in Bimetric Relativity  [PDF]
R. C. Sahu, S. P. Misra, B. Behera
International Journal of Astronomy and Astrophysics (IJAA) , 2015, DOI: 10.4236/ijaa.2015.51007
Abstract: Kantowski-Sachs plane symmetric models are investigated in bimetric theory of gravitation proposed by Rosen [1] in the context of bulk viscous fluid. Taking conservation law and the equation of state, two different models of the universe are obtained. It is observed that Kantowski-Sachs vacuum model obtained in first case and bulk viscous fluid model obtained in second case. It is also observed that the bulk viscous cosmological model always represents an accelerated universe and consistent with the recent observations of type-1a supernovae. Some physical and geometrical features of the viscous fluid model are studied.
Recursive Algorithm and Systolic Architecture for the Discrete Cosine Transform
Anjali Sahu,S S Nayak
International Journal of Electronics and Computer Science Engineering , 2012,
Abstract: A novel VLSI architecture for computing the discrete cosine transform of variable length is proposed. By using some mathematical techniques, any general length DCT can be converted in to a recursive equation and this structure can be realized using software, hardware and VLSI techniques. This algorithm can be implemented using regular and parallel VLSI structures, so that the computational complexity is greatly reduced. It can also be extended to implement a two dimensional DCT in a straight forward way
Therapeutic management of anaphylactic shock in a mare
Roy,S,Roy,M and Sahu
Veterinary World , 2009,
Abstract: [Vet. World 2009; 2(5.000): 203-203]
PROTECTIVE EFFECTS OF SOME NATURAL AND SYNTHETIC ANTIDEPRESSANTS AGAINST CHRONIC FATIGUE INDUCED ALTERATIONS
Y. Sahu,J. S. Vaghela
Journal of Global Pharma Technology , 2011, DOI: 10.1234/jgpt.v3i2.349
Abstract: The present study was carried out using mice model of chronic fatigue syndrome ( CFS) in which mice were forced to swim everyday for 15 days for a 6 min session. There was a significant increase in despair behaviour ( immobility period) in saline treated mice on successive days. Treatment with herbal products Glychyrrhiza glabra (100 & 200 mg/kg, po ), Asparagus racemosus (100 & 200 mg/kg, po ), & Convulvulus pluricaulis (100 & 200 mg/kg, po ). Fluoxetine , a selective serotonin reuptake inhibitor produced a significant effect only on first and third day of its treatment. Biochemical analysis revealed that chronic swim test significantly increased lipid peroxidation and decreased in the levels of super oxide dismutase ( SOD) in the brains of mice. Fluoxetine affected the biochemical variables not to the same extent as other treatments. The findings of the present study suggests that oxidative stress might play a significant role in the pathophysiology of CFS. Thus antioxidants as Glychyrrhiza glabra , Asparagus racemosus & Convulvulus pluricaulis could be useful in the treatment of CFS.
Effect of magnetic field on the strange star
S. Chakrabarty,P. K. Sahu
Physics , 1995, DOI: 10.1103/PhysRevD.53.4687
Abstract: We study the effect of a magnetic field on the strage quark matter and apply to strange star. We found that the strange star becomes more compact in presence of strong magnetic field.
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