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Search Results: 1 - 10 of 924 matches for " Shahriar Salehi "
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Marketing and Fundraising Practices Involved in the Sport Clubs
Hossein Allahyari,Seyed Hossein Mousavi,Shahriar Salehi
International Journal of Academic Research in Business and Social Sciences , 2011,
Abstract: The aim of this study to identify the marketing and fundraising practices involved in the sport. The data were gathered from a researcher-made questionnaire and interviews. Results showed that coaches believed the best sources of income creation for sports clubs include ticket sales and broadcasting license, private sector participation as clubs sponsors, athletic goods sales to fans and athletes and establishment of sporting schools and, finally, private clubs.
Gene Expression Profiling of Mitochondrial Oxidative Phosphorylation (OXPHOS) Complex I in Friedreich Ataxia (FRDA) Patients
Mohammad Hossein Salehi, Behnam Kamalidehghan, Massoud Houshmand, Goh Yong Meng, Majid Sadeghizadeh, Omid Aryani, Shahriar Nafissi
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0094069
Abstract: Friedreich ataxia (FRDA) is the most frequent progressive autosomal recessive disorder associated with unstable expansion of GAA trinucleotide repeats in the first intron of the FXN gene, which encodes for the mitochondrial frataxin protein. The number of repeats correlates with disease severity, where impaired transcription of the FXN gene results in reduced expression of the frataxin protein. Gene expression studies provide insights into disease pathogenicity and identify potential biomarkers, an important goal of translational research in neurodegenerative diseases. Here, using real-time PCR (RT-PCR), the expression profiles of mitochondrial (mtDNA) and nuclear DNA (nDNA) genes that encode for the mitochondrial subunits of respiratory oxidative phosphorylation (OXPHOS) complex I in the blood panels of 21 FRDA patients and 24 healthy controls were investigated. Here, the expression pattern of mtDNA-encoded complex I subunits was distinctly different from the expression pattern of nDNA-encoded complex I subunits, where significant (p<0.05) down-regulation of the mitochondrial ND2, ND4L, and ND6 complex I genes, compared to controls, were observed. In addition, the expression pattern of one nDNA-encoded gene, NDUFA1, was significantly (p<0.05) down-regulated compared to control. These findings suggest, for the first time, that the regulation of complex I subunit expression in FRDA is complex, rather than merely being a reflection of global co-regulation, and may provide important clues toward novel therapeutic strategies for FRDA and mitochondrial complex I deficiency.
Determine the Eigen Function of Schrodinger Equation with Non-Central Potential by Using NU Method  [PDF]
Hamdollah Salehi
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.28138
Abstract: So far, Schrodinger equation with central potential has been solved in different methods but solving this equation with non-central potentials is less dealt with. Solving such equations are way more difficult and complicated and a certain and limited number of non-central potentials can be solved. In this paper, we introduce one of the solvable kinds of such potentials and we will use NU method for solving Schrodinger equation and then by using this method we have calculated particular figures of its energy and function.
First Principles Studies on the Electronic Structure and Band Structure of Paraelectric SrTiO3 by Different Approximations  [PDF]
H. Salehi
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.29111
Abstract: The electronic structure, energy band structure, total density of states (DOS) and electronic density of perovskite SrTiO3 in the cubic phase are calculated by the using full potential-linearized augmented plane wave (FP-LAPW) method in the framework density functional theory (DFT) with the generalized gradient approximation (GGA) by WIEN2k package. The calculated band structure shows a direct band gap of 2.5 eV at the Γ point in the Brillouin zone.The total DOS is compared with experimental x-ray photoemission spectra. From the DOS analysis, as well as charge-density studies, I have conclude that the bonding between Sr and TiO2 is mainly ionic and that the TiO2 entities bond covalently.The calculated band structure and density of state of SrTiO3 are in good agreement with theoretical and experimental results.
A Scarce Presentation of Mycobacterium tuberculosis, Case Report  [PDF]
Mahsa Alinaghian, Hasan Salehi, Mohammad Mehdi Salehi
Advances in Infectious Diseases (AID) , 2018, DOI: 10.4236/aid.2018.81003
Abstract: Here, we report a case of 24-year-old female who experienced fever, weight loss, and headache by the termination of her pregnancy after 24 weeks. She was admitted due to multiple generalized tonic clonic (GTC) seizures and loss of consciousness. Her lab data and histological findings were insignificant as well as negative mycobacterium culture. Her brain MRI detected multiple enhanced brain lesions on T2 weighted images. Overall, she went under empiric anti-TB treatment for a year and had a complete recovery. To our knowledge, this is the first reported case of brain tuberculoma with negative histological findings and brain tissue culture who responded to an empiric anti-TB regimen.
Investigation of the Optical Properties of CdBr2  [PDF]
Hamdollah Salehi, Nastaran Asareh
Optics and Photonics Journal (OPJ) , 2011, DOI: 10.4236/opj.2011.11001
Abstract: The optical properties of CdBr2 were studied by first principle using the density functional theory. The dielectric functions and optical constants are calculated using the full potential-linearized augmented plane wave (FP-LAPW) method with the generalized gradient approximation (GGA). The theoretical calculated optical properties and energy Loss (EEL) spectrum yield a static refractive index of 2.1 and a plasmon energy of 13eV for hexagonal phase. The results, in comparison with the published data, are in good agreement with the experimental and previous theoretical results.
First-Principles Study of the Optical Properties of SrHfO3  [PDF]
Hamdollah Salehi, Hosein Tolabinejad
Optics and Photonics Journal (OPJ) , 2011, DOI: 10.4236/opj.2011.12012
Abstract: The optical properties of SrHfO3,were studied by first principle using the density functional theory.The dielectric functions and optical constants are calculated using the full potential–linearized augmented plane wave (FP-LAPW) method with the generalized gradient approximation(GGA)by Wien2k package. The theoretical calculated optical properties and energy loss(EEL)spectrum yield a static refractive index of1. 924and a Plasmon energy of 27eVfor cubic phase. The complex dielectric functions are calculated which are in good agreement with the available experimental results.
Ab Initio Study of Electronic Properties of a Armchair (7,7) Carbon Nanotube  [PDF]
Hamdollah Salehi, Khadigeh Gharbavi
Advances in Materials Physics and Chemistry (AMPC) , 2012, DOI: 10.4236/ampc.2012.23024
Abstract: The electronic structure, band gap and density of states of (7,7) Armchair carbon nanotube by the full potentiallin- earized augmented plane wave (FP-LAPW)method in the framework density functional theory (DFT) with the generalized gradient approximation (GGA) were studied. The calculated band structure and density of state of Armchair (7,7) carbon nanotube were in good agreement with theoretical and experimental results.
Performance Improvement in Estimation of Spatially Correlated Rician Fading MIMO Channels Using a New LMMSE Estimator  [PDF]
Hamid Nooralizadeh, Shahriar Shirvani Moghaddam
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2010, DOI: 10.4236/ijcns.2010.312131
Abstract: In most of the previous researches on the multiple-input multiple-output (MIMO) channel estimation, the fading model has been assumed to be Rayleigh distributed. However, the Rician fading model is suitable for microcellular mobile systems or line of sight mode of WiMAX. In this paper, the training based channel es-timation (TBCE) scheme in the spatially correlated Rician flat fading MIMO channels is investigated. First, the least squares (LS) channel estimator is probed. Simulation results show that the Rice factor has no effect on the performance of this estimator. Then, a new linear minimum mean square error (LMMSE) technique, appropriate for Rician fading channels, is proposed. The optimal choice of training sequences with mean square error (MSE) criteria is investigated for these estimators. Analytical and numerical results show that the performance of proposed estimator in the Rician channel model compared with Rayleigh one is much better. It is illustrated that when the channel Rice factor and/or the correlation coefficient increase, the per-formance of the proposed estimator significantly improves.
Cryptanalysis of a Substitution-Permutation Network Using Gene Assembly in Ciliates  [PDF]
Arash Karimi, Hadi Shahriar Shahhoseini
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2012, DOI: 10.4236/ijcns.2012.53020
Abstract: In this paper we provide a novel approach for breaking a significant class of block ciphers, the so-called SPN ciphers, using the process of gene assembly in ciliates. Our proposed scheme utilizes, for the first time, the Turing-powerful potential of gene assembly procedure of ciliated protozoa into the real world computations and has a fewer number of steps than the other proposed schemes to break a cipher. We elaborate notions of formal language theory based on AIR systems, which can be thought of as a modified version of intramolecular scheme to model the ciliate bio-operations, for construction of building blocks necessary for breaking the cipher, and based on these nature-inspired constructions which are as powerful as Turing machines, we propose a theoretical approach for breaking SPN ciphers. Then, we simulate our proposed plan for breaking these ciphers on a sample block cipher based on this structure. Our results show that the proposed scheme has 51.5 percent improvement over the best previously proposed nature-inspired scheme for breaking a cipher.
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