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Search Results: 1 - 10 of 471580 matches for " S. N. Hoseini-motlagh "
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Muon cycling rate in D/T mixture including doubly muonic molecule formation
M. R. Eskandari,S. N. Hoseini-motlagh,B. Rezaie
Iranian Journal of Physics Research , 2002,
Abstract: In the present work, the fundamental behavior of four body molecule formations of pt μμ , pd μμ , dt μμ , tt μμ , and pp μμ in a D/T fusion are considered. Their higher fusion rate, specially the available data for dt μμ , encouraged us to study the muon cycling rate in D/T fusion in the temperature range of (100-1400 K), density and deuterium-tritium concentration ratio. For this purpose, various values for the doubly muonic molecule formation are chosen and with the comparison to the experimental results, the doubly muonic formation rate of 109 s-1 is predicted theoretically. Our calculated cycling rate has shown that having not considered the doubly muonic formation in previous calculations had made no serious changes in the previously calculated values.
A Study of muon efficiency dependency on ion density in fusion of D-T and D-T-H mixtures and their comparison
M. R. Eskandari,S. N. Hoseini Motlagh
Iranian Journal of Physics Research , 1998,
Abstract:
The effects of nonlinear Maxwell source on the magnetic solutions in Einstein-Gauss-Bonnet gravity
S. H. Hendi,S. Kordestani,S. N. D. Motlagh
Physics , 2010, DOI: 10.1143/PTP.124.1067
Abstract: Considering both the power Maxwell invariant source and the Einstein--Gauss--Bonnet gravity, we present a new class of static solutions yields a spacetime with a longitudinal nonlinear magnetic field. These horizonless solutions have no curvature singularity, but have a conic geometry with a deficit angle $\delta \phi$. In order to have vanishing electromagnetic field at spatial infinity, we restrict the nonlinearity parameter to $s>1/2$. Investigation of the energy conditions show that these solutions satisfy the null, weak and strong energy conditions simultaneously, for $s>1/2$, and the dominant energy condition is satisfied when $s \in ({1/2,1}]$. In addition, we look for about the effect of nonlinearity parameter on the energy density and also deficit angle, and find that these quantities are sensitive with respect to variation of nonlinearity parameter. We find that for special values of nonlinearity parameter, two important subclass of solutions, so-called conformally invariant Maxwell and BTZ-like solutions, with interesting properties, emerge. Then, we generalize the static solutions to the case of spinning magnetic solutions and find that, when one or more rotation parameters are nonzero, the brane has a net electric charge which is proportional to the magnitude of the rotation parameters. We also use the counterterm method to compute the conserved quantities of these spacetimes such as mass, angular momentum, and find that these conserved quantities do not depend on the nonlinearity parameter.
Vanishing of the first $(σ,τ)$-cohomology group of triangular Banach algebras
M. Khosravi,M. S. Moslehian,A. N. Motlagh
Mathematics , 2005,
Abstract: In this paper, we define the first topological $(\sigma,\tau)$-cohomology group and examine vanishing of the first $(\sigma,\tau)$-cohomology groups of certain triangular Banach algebras. We apply our results to study the $(\sigma,\tau)$-weak amenability and $(\sigma,\tau)$-amenability of triangular Banach algebras.
Semi-periodic vector for n-tuples of operators
S. N. Hoseini,M. Habibi,F. Safari,F. Ghezelbash
International Journal of Mathematical Analysis , 2012,
Abstract:
Study of fractal flow of inhomogeneous fluids over smooth inclined surfaces and determination of their fractal dimension and university classes
N. Maleki-Jirsaraei,B. Ghane-Motlagh,S. Baradaran,E. Shekaria
Iranian Journal of Physics Research , 2004,
Abstract: Patterns formed by the flow of an inhomogeneous fluid (suspension) over a smooth inclined surface were studied. It was observed that fractal patterns formed. There exists a threshold angle for the inclination above which, global fractal patterns are formed. This angle depends on the particle size of the suspension. We observed that there are two fractal dimensions for these patterns, depending on the area from which the pattern is extracted. If the pattern is taken from the top which only consists of the beginning stages of the pattern forming, one finds two fractal dimensions i.e. 1.35-1.45 and 1.6-1.7, in which the first one is dominant. And if the entire pattern is taken, then fractal dimension 1.6-1.7 is observed. The first fractal dimension belongs to the class of flow of water over an inhomogeneous surface, and the second one corresponds to the river network. This may imply that both universality classes are present. However , disorder is present in the fluid and is transferred to the surface. We have also determined the fractal dimension of the patterns formed below the threshold angle. We find it to be between 1.57 to 1.7.
Scaling of the wavelength of the strata and phase diagram, for the flow of binary granular mixture in a vertical Hele-Shaw cell
N. Maleki-Jirsaraei,S. Baradaran,B. Ghane-Motlagh,E. Shekarian
Iranian Journal of Physics Research , 2004,
Abstract:
A Review on Positioning Techniques and Technologies: A Novel AI Approach
O. Motlagh,S.H. Tang,N. Ismail,A.R. Ramli
Journal of Applied Sciences , 2009,
Abstract: There are variety of positioning techniques applied to tracking of mobile objects such as mobile robots, handheld devices carried by human subject, etc. With the advent of new technologies, new strategies have emerged from combination of algorithms and those technical capabilities. This study is dedicated to a review of past and current approaches to positioning, including their advantages and shortcomings. More focus is given on trilateral radiolocation especially for indoor human motion tracking. A solution is sought to resolve the problem of algorithm failure with applicability to all areas of positioning and tracking including trilateration when less than three reference points are available.
Comparison between Two Digital Panoramic Radiography Techniques for Proximal Caries Detection
Seyed Hossein Hoseini Zarch,Adineh Javadian Langaroodi,Mina Shafagh Motlagh
Journal of Dental Materials and Techniques , 2013,
Abstract: Introduction: Although proximal dental caries are very common, clinical examinations cannot detect them all. Panoramic radiography has been widely used in dentistry for both diagnosis and screening. This study aimed to investigate and compare the efficacy of two digital panoramic radiography techniques in the diagnosis of proximal caries. Methods: A total number of 60 patients referred to a dental radiology center, all had complete dental system and bitewing radiographies, were included. The patients were randomly divided into two groups of 30 patients. For the first and second groups, CR and DR images were obtained respectively. Images were obtained from the distal of the third tooth to the distal of the eighth. Bitewing images were compared with CR and DR images regarding the detection of caries. Kappa index and chi-squared statistics were employed to analyze the results. Results: There was a high agreement rate between bitewing images and CR (Kappa=0.775) and DR (Kappa=o.762) images in detecting caries. Also no significant difference was shown between CR and DR techniques in the detection of caries (0.543). However, DR and CR images are not efficient enough to be prescribed as the sole imaging technique to detect proximal caries. Conclusion: DR and CR techniques could be good imaging techniques for the detection of dental caries as a companion to clinical examinations.
Evaluation of antifungal activity of essential oil of Carvacrol on standard Fluconazole sensitive and
Hoseini S S
Medical Laboratory Journal , 2012, DOI: http://www.goums.ac.ir/mljgoums/index.php?slc_lang=en&sid=1
Abstract: Background and objectives: Candida albicans is a humanopportunistic fungus causing mucosal and systemic infections inimmunocompromised individuals. There is evidence of increasingresistance to antifungal agents, thus it is necessary to search about newformulations for finding the antifungal agents. Some plants haveantimicrobial properties due to presence of components such aspolyphenols. We aimed at evaluating antifungal effects of Carvacrolessence, which is the main compound of essential oil of Thymusvulgaris, on standard Fluconazole sensitive and resistance strains ofCandida albicans.Material and Methods: This study evaluated the antiCandida activityof essential oil Carvacrol by means of Inhibitory zone diameter andMinimum Inhibitory Concentration (MIC), using Microdilution brothand Disc diffusion methods. To do this, Serial dilutions (10-100 μl)of essential oils were made in 96 well microtiter plates. The wells’opacity was assessed by using a microtiter plate reader of solution.The Minimum Inhibitory Concentration (MIC) of essential oilCarvacrol and Fluconazole were measured by counting the number ofcolony in Dextro agar medium.Results: the minimum inhibitory concentration of Carvacrol essencein standard strains and Fluconazole-resistance Candida albicans are,respectively, 5.3 and 6.18μg/ml, and the Minimal FungicideConcentration (MFC) are 10.61 and 12. 3μg/ml. Inhibitory zonediameters are 45 and 35 millimeter for Fluconazole sensitive andresistance Candida albicans, respectively.Conclusion: the results show that essence of Carvacrol has suitableantifungal effects against standard strains and Fluconazole sensitiveand resistance of Candida albicans. These herbal essences, aftersupplementary studies, possibly can be used for infections caused byCandidas.Key words: Antifungal activity; Carvacrol; Candida albicans;Fluconazole
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