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Shiv K. Gupta

Bio: Shiv K. Gupta is an academic researcher from Mayo Clinic. The author has contributed to research in topics: Thin film & Pion. The author has an hindex of 43, co-authored 150 publications receiving 8911 citations. Previous affiliations of Shiv K. Gupta include University of Rajasthan & Bhabha Atomic Research Centre.
Topics: Thin film, Pion, Charged particle, Nucleon, In vivo


Papers
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Journal ArticleDOI
K. Adcox1, S. S. Adler2, Serguei Afanasiev3, Christine Angela Aidala4  +550 moreInstitutions (48)
TL;DR: In this paper, the results of the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC) were examined with an emphasis on implications for the formation of a new state of dense matter.

2,572 citations

Journal ArticleDOI
K. Adcox1, S. S. Adler2, N. N. Ajitanand3, Y. Akiba  +319 moreInstitutions (36)
TL;DR: In this paper, the authors measured the transverse momentum spectra for charged hadrons and neutral pions in the range 1 Gev/c < P-T < 5 GeV/c.
Abstract: Transverse momentum spectra for charged hadrons and for neutral pions in the range 1 Gev/c < P-T < 5 GeV/c have been measured by the PHENIX experiment at RHIC in Au + Au collisions at rootS(NN) = 130 GeV. At high p(T) the spectra from peripheral nuclear collisions are consistent with scaling the spectra from p + p collisions by the average number of binary nucleon-nucleon collisions. The spectra from central collisions are significantly suppressed when compared to the binary-scaled p + p expectation, and also when compared to similarly binary-scaled peripheral collisions, indicating a novel nuclear-medium effect in central nuclear collisions at RHIC energies.

803 citations

Journal ArticleDOI
K. Adcox1, S. S. Adler2, M. Aizama3, N. N. Ajitanand4  +601 moreInstitutions (42)
TL;DR: The PHENIX detector as mentioned in this paper is designed to perform a broad study of A-A, p-A and p-p collisions to investigate nuclear matter under extreme conditions, and is used to study systematic variations with species and energy as well as to measure the spin structure of the nucleon.
Abstract: The PHENIX detector is designed to perform a broad study of A-A, p-A, and p-p collisions to investigate nuclear matter under extreme conditions A wide variety of probes, sensitive to all timescales, are used to study systematic variations with species and energy as well as to measure the spin structure of the nucleon Designing for the needs of the heavy-ion and polarized-proton programs has produced a detector with unparalleled capabilities PHENIX measures electron and muon pairs, photons, and hadrons with excellent energy and momentum resolution The detector consists of a large number of subsystems that are discussed in other papers in this volume The overall design parameters of the detector are presented (C) 2002 Elsevier Science BV All rights reserved

447 citations

Journal ArticleDOI
TL;DR: In this paper, the authors studied the microstructure of the nanowires as a function of temperature and annealing time using scanning electron microscopy, energy dispersive X-ray analysis and selected area electron diffraction.

253 citations

Journal ArticleDOI
TL;DR: In this article, single crystal whiskers and bipyramidal nano-crystals were found to be sensitive to as low as 200ppb of H2S gas at room temperature and showed saturation in response at 10ppm.
Abstract: In2O3 whiskers and bipyramidal nano-crystals were prepared by a carbothermal method. These were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX), photoluminescence and Raman spectroscopy. These were studied for application to sensing of H2S gas. The single crystal whiskers were found to be sensitive to as low as 200 ppb of H2S gas at room temperature and showed saturation in response at 10 ppm. On the other hand, the films made of bipyramids were less sensitive to H2S gas and the response was found to be a nearly linear function of concentration in a concentration range of 10–80 ppm.

252 citations


Cited by
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Journal ArticleDOI
Joseph Adams1, Madan M. Aggarwal2, Zubayer Ahammed3, J. Amonett4  +363 moreInstitutions (46)
TL;DR: In this paper, the most important experimental results from the first three years of nucleus-nucleus collision studies at RHIC were reviewed, with emphasis on results of the STAR experiment.

2,750 citations

01 Jan 2013
TL;DR: In this article, the landscape of somatic genomic alterations based on multidimensional and comprehensive characterization of more than 500 glioblastoma tumors (GBMs) was described, including several novel mutated genes as well as complex rearrangements of signature receptors, including EGFR and PDGFRA.
Abstract: We describe the landscape of somatic genomic alterations based on multidimensional and comprehensive characterization of more than 500 glioblastoma tumors (GBMs). We identify several novel mutated genes as well as complex rearrangements of signature receptors, including EGFR and PDGFRA. TERT promoter mutations are shown to correlate with elevated mRNA expression, supporting a role in telomerase reactivation. Correlative analyses confirm that the survival advantage of the proneural subtype is conferred by the G-CIMP phenotype, and MGMT DNA methylation may be a predictive biomarker for treatment response only in classical subtype GBM. Integrative analysis of genomic and proteomic profiles challenges the notion of therapeutic inhibition of a pathway as an alternative to inhibition of the target itself. These data will facilitate the discovery of therapeutic and diagnostic target candidates, the validation of research and clinical observations and the generation of unanticipated hypotheses that can advance our molecular understanding of this lethal cancer.

2,616 citations

Journal ArticleDOI
K. Adcox1, S. S. Adler2, Serguei Afanasiev3, Christine Angela Aidala2  +550 moreInstitutions (48)
TL;DR: In this paper, the results of the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC) were examined with an emphasis on implications for the formation of a new state of dense matter.

2,572 citations

Journal ArticleDOI
TL;DR: In this article, the main results obtained by the BRAHMS Collaboration on the properties of hot and dense hadronic and partonic matter produced in ultrarelativistic heavy ion collisions at RHIC are reviewed.

1,860 citations

Journal ArticleDOI
TL;DR: In the most central Au+Au collisions at the highest beam energy, evidence is found for the formation of a very high energy density system whose description in terms of simple hadronic degrees of freedom is inappropriate as discussed by the authors.

1,786 citations