Usama Khan - Academia.edu (original) (raw)
Papers by Usama Khan
The Astrophysical Journal, 2011
Neutrino analysis of the September 2010 Crab Nebula flare and time-integrated constraints on neut... more Neutrino analysis of the September 2010 Crab Nebula flare and time-integrated constraints on neutrino emission from the Crab using IceCube.
The Astrophysical Journal, 2009
Physical Review Letters, 2009
Physical Review D, 2011
Self-annihilating or decaying dark matter in the Galactic halo might produce high energy neutrino... more Self-annihilating or decaying dark matter in the Galactic halo might produce high energy neutrinos detectable with neutrino telescopes. We have conducted a search for such a signal using 276 days of data from the IceCube 22-string configuration detector acquired during 2007 and 2008. The effect of halo model choice in the extracted limit is reduced by performing a search that considers the outer halo region and not the Galactic Center. We constrain any large scale neutrino anisotropy and are able to set a limit on the dark matter self-annihilation cross section of σAv ≃ 10 −22 cm 3 s −1 for WIMP masses above 1 TeV, assuming a monochromatic neutrino line spectrum.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2012
IceCube neutrino detector recorded 32 billion of atmospheric muons generated in air showers produ... more IceCube neutrino detector recorded 32 billion of atmospheric muons generated in air showers produced by cosmic rays in the TeV energy range. With such high statistics sample it is possible to observe, for the first time in the southern hemisphere, an energy dependence in the Galactic cosmic ray anisotropy up to a few hundred TeV. This study shows that the same large-scale anisotropy observed at median energies around 20 TeV is not present at 400 TeV; the anisotropy observed at 400 TeV shows substantial differences with respect to that at lower energy. In addition to the large-scale features observed at 20 TeV in the form of strong dipole and quadrupole moments, the data include several localized regions of excess and deficit on scales between 10 • to 30 •. The features observed at both large and small scale are statistically significant, but their origin is currently unknown.
The Astrophysical Journal, 2010
Brain Circulation, 2019
How to cite this article: Khan U, Ding Y. Prevention of traumatic brain injury-related death usin... more How to cite this article: Khan U, Ding Y. Prevention of traumatic brain injury-related death using the brain-gut axis.
International Journal for Research in Applied Science and Engineering Technology, 2021
In the day-to-day life, the utilization of power turns of being necessary for each work. This pap... more In the day-to-day life, the utilization of power turns of being necessary for each work. This paper focuses on designing a setup that leads to the generation of electrical energy which is going to waste when humans are walking. There are different methods used to produce energy like conventional and non-conventional methods. In this project, we are doing generation of power by walking or running. Power can be generated by walking on the stairs. The generated power will be stored and then we can use it for domestic purposes. The paper proposes a novel technique for the creation of power utilizing piezoelectric sensors kept along the footpaths which can be ready to charge the battery and ready to supply the force at whatever time of our prerequisite. The non-conventional energy system is very essential currently to our nation. Nonconventional energy using footstep is converting mechanical energy into Electrical Energy. Due to this a lot of energy resources have been exhausted and wast...
Proceedings of the 5th …, 2009
D.-S. Huang et al. (Eds.): ICIC 2009, LNCS 5754, pp. 10141024, 2009. © Springer-Verlag Berlin He... more D.-S. Huang et al. (Eds.): ICIC 2009, LNCS 5754, pp. 10141024, 2009. © Springer-Verlag Berlin Heidelberg 2009 ... Modified AES Using Chaotic Key Generator for ... Fahad Bin Muhaya, Muhammad Usama, and Muhammad Khurram Khan ... Prince Muqrin Chair for IT Security (PMC) ...
The Astrophysical Journal, 2011
Neutrino analysis of the September 2010 Crab Nebula flare and time-integrated constraints on neut... more Neutrino analysis of the September 2010 Crab Nebula flare and time-integrated constraints on neutrino emission from the Crab using IceCube.
The Astrophysical Journal, 2009
Physical Review Letters, 2009
Physical Review D, 2011
Self-annihilating or decaying dark matter in the Galactic halo might produce high energy neutrino... more Self-annihilating or decaying dark matter in the Galactic halo might produce high energy neutrinos detectable with neutrino telescopes. We have conducted a search for such a signal using 276 days of data from the IceCube 22-string configuration detector acquired during 2007 and 2008. The effect of halo model choice in the extracted limit is reduced by performing a search that considers the outer halo region and not the Galactic Center. We constrain any large scale neutrino anisotropy and are able to set a limit on the dark matter self-annihilation cross section of σAv ≃ 10 −22 cm 3 s −1 for WIMP masses above 1 TeV, assuming a monochromatic neutrino line spectrum.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2012
IceCube neutrino detector recorded 32 billion of atmospheric muons generated in air showers produ... more IceCube neutrino detector recorded 32 billion of atmospheric muons generated in air showers produced by cosmic rays in the TeV energy range. With such high statistics sample it is possible to observe, for the first time in the southern hemisphere, an energy dependence in the Galactic cosmic ray anisotropy up to a few hundred TeV. This study shows that the same large-scale anisotropy observed at median energies around 20 TeV is not present at 400 TeV; the anisotropy observed at 400 TeV shows substantial differences with respect to that at lower energy. In addition to the large-scale features observed at 20 TeV in the form of strong dipole and quadrupole moments, the data include several localized regions of excess and deficit on scales between 10 • to 30 •. The features observed at both large and small scale are statistically significant, but their origin is currently unknown.
The Astrophysical Journal, 2010
Brain Circulation, 2019
How to cite this article: Khan U, Ding Y. Prevention of traumatic brain injury-related death usin... more How to cite this article: Khan U, Ding Y. Prevention of traumatic brain injury-related death using the brain-gut axis.
International Journal for Research in Applied Science and Engineering Technology, 2021
In the day-to-day life, the utilization of power turns of being necessary for each work. This pap... more In the day-to-day life, the utilization of power turns of being necessary for each work. This paper focuses on designing a setup that leads to the generation of electrical energy which is going to waste when humans are walking. There are different methods used to produce energy like conventional and non-conventional methods. In this project, we are doing generation of power by walking or running. Power can be generated by walking on the stairs. The generated power will be stored and then we can use it for domestic purposes. The paper proposes a novel technique for the creation of power utilizing piezoelectric sensors kept along the footpaths which can be ready to charge the battery and ready to supply the force at whatever time of our prerequisite. The non-conventional energy system is very essential currently to our nation. Nonconventional energy using footstep is converting mechanical energy into Electrical Energy. Due to this a lot of energy resources have been exhausted and wast...
Proceedings of the 5th …, 2009
D.-S. Huang et al. (Eds.): ICIC 2009, LNCS 5754, pp. 10141024, 2009. © Springer-Verlag Berlin He... more D.-S. Huang et al. (Eds.): ICIC 2009, LNCS 5754, pp. 10141024, 2009. © Springer-Verlag Berlin Heidelberg 2009 ... Modified AES Using Chaotic Key Generator for ... Fahad Bin Muhaya, Muhammad Usama, and Muhammad Khurram Khan ... Prince Muqrin Chair for IT Security (PMC) ...