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Search Results: 1 - 10 of 502 matches for " GM Khorrami "
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Characterization and comparison of PZT powder synthesis by solid state and sol gel methods
E Pakizeh,GM Khorrami,M Ghasemifard,SM Hosseini
Iranian Journal of Physics Research , 2012,
Abstract: This paper describes the synthesis of Pb(Zr0.95Ti0.05)O3 powder by sol gel and solid state methods. PZT powders were fabricated by solid-state reaction process using metal oxides and in sol gel method salts and organic compounds were employed. The powders were calcined at 700 and 950 oC in sol gel and solid state methods, respectively. The synthesized powders were analyzed by FTIR and XRD. The average crystal grain size of PZT powders determined by X-ray diffraction method using the Scherrer equation, and in sol gel and solid state methods measured 42 and 330 nm, respectively. The optical constants of powders were evaluated and compaed using FTIR transmittance spectroscopy and Kramers-Kronig analysis.
A Matter-Antimatter Symmetric World and Gamma-Ray Background
M. Khorrami
Iranian Journal of Physics Research , 1996,
Phase transition in one-dimensional lattice gauge theories
M. Khorrami
Physics , 1994,
Abstract: Considering one-dimensional nonminimally-coupled lattice gauge theories, a class of nonlocal one-dimensional systems is presented, which exhibits a phase transition. It is shown that the transition has a latent heat, and, therefore, is a first order phase transition.
A general formulation of discrete-time quantum mechanics, restrictions on the action and the relation of unitarity to the existence theorem for initial-value problems
M. Khorrami
Physics , 1994, DOI: 10.1006/aphy.1995.1108
Abstract: A general formlulation for discrete-time quantum mechanics, based on Feynman's method in ordinary quantum mechanics, is presented. It is shown that the ambiguities present in ordinary quantum mechanics (due to noncommutativity of the operators), are no longer present here. Then the criteria for the unitarity of the evolution operator is examined. It is shown that the unitarity of the evolution operator puts restrictions on the form of the action, and also implies the existence of a solution for the classical initial-value problem.
Exact Solution for the Most General Minimally Coupled One Dimensional Lattice Gauge Theory
M. Khorrami
Physics , 1993, DOI: 10.1007/BF00673958
Abstract: We consider one dimensional lattice gauge theories constructed by the minimal coupling prescription. It is shown that these theories are exactly solvable in the thermodynamic limit. After considering the most general case, we discuss some special cases on finite lattices, and also work out some examples. There is no phase transition in these minimally coupled theories.
Investigating the stellar system's life-time and the evolution of their mass function using N-body simulation
Zeinab Khorrami
Physics , 2012,
Abstract: In this thesis we study several aspects of dynamical evolution of stellar clusters. The results of more than 200 simulations of single-mass star clusters with different initial total mass, half-mass radius and galactocentric distance, are reported. Recent studies of star clusters show a linear relation between a star cluster's dissolution time and its two-body relaxation time in logarithmic scale. We found that the single-mass star clusters do not show such a linear relation. We present new modified initial parameters to obtain a linear relation for single-mass star clusters. Also the evolution of multi-mass clusters and their lifetime, in the presence of the Galaxy is investigated. We simulate about 90 multi-mass star clusters with the Nbody6 code. These clusters have different initial total mass, half-mass radius and galactocentric distance. Finally we investigate the evolution of the stellar mass function and show that the slopes of the mass functions decrease with time. In addition we study the effect of galactocentric distance of star clusters on the evolution of the mass function.
Revisión de la aloe vera (Barbadensis Miller) en la dermatología actual
Revista argentina de dermatolog?-a , 2009,
Abstract: the aloe vera is a popular plant used in the treatment of certain skin diseases that has a frequent application in cosmetology. it forms a part of diverse creams or gels, being used as anti-inflammatory and restorative of epithelial tissue. although there are several mechanisms of action and clinical indications, a review of its use should be done supported by controlled trials to determine its effectiveness.
Traduire les énoncés religieux indigénisés: cas de la traduction du cilubà en fran ais et en anglais
GM Nshindi
Lexikos , 2008,
Abstract: Résumé: Cet article s'efforce à examiner les difficultés inhérentes à la traduction du cilubà en fran ais et en anglais de certains énoncés, à savoir, les expressions religieuses, les devises et les proverbes. Il a essayé de démontrer qu'une fois que le message biblique a été indigénisé en cilubà, il devient très difficile de le traduire à nouveau dans les langues européennes, en l'occurrence en fran ais et en anglais. En effet, il contient des africanismes ou des réalités locales qui sont puisées dans la cosmologie africaine, laquelle n'est pas toujours conforme à la foi chrétienne. Enfin, l'emploi de l'ethnographie de communication du cilubà pendant les cérémonies religieuses incite à l'emploi des métaphores, des proverbes et autres aspects du langage imagé. à moins de recourir à la traduction fonctionnelle, l'interprète ne peut pas aider les locuteurs fran ais et anglais à participer à ces pratiques langagières. Mots clés: éNONCé, DEVISE, CONTEXTE, INDIGéNISATION, RENOUVEAU LITURGIQUE, TRADUCTION, TRADUCTOLOGIE, PARéMIES, ETHNOGRAPHIE DE COMMUNICATION, LANGAGE IMAGé
Treatment options for postmenopausal osteoporosis
Walsh GM
Therapeutics and Clinical Risk Management , 2012, DOI: http://dx.doi.org/10.2147/TCRM.S36280
Abstract: Treatment options for postmenopausal osteoporosis Review (1325) Total Article Views Authors: Walsh GM Published Date August 2012 Volume 2012:8 Pages 367 - 368 DOI: http://dx.doi.org/10.2147/TCRM.S36280 Received: 23 July 2012 Accepted: Published: 28 August 2012 Garry M Walsh Division of Applied Medicine, School of Medicine and Dentistry, Institute of Medical Sciences, University of Aberdeen, United Kingdom To serve our readership better, future editions of Therapeutics and Clinical Risk Management will once again feature the Editor’s comments and views on some of the articles published in that issue of the journal. Bone is a complex tissue that, in addition to protecting vital organs and giving mechanical support for muscles and joints, provides a mineral reservoir essential for calcium homeostasis, together with the microenvironment essential for hematopoiesis. Osteoporosis is the most common metabolic bone disease, with up to a third of postmenopausal women suffering from this increasingly important public health problem. Key characteristics include low bone mineral density with microarchitectural deterioration of bone tissue leading to increased susceptibility to fragility fractures. Post to: Cannotea Citeulike Del.icio.us Facebook LinkedIn Twitter Other articles by Dr Garry Walsh Profile of reslizumab in eosinophilic disease and its potential in the treatment of poorly controlled eosinophilic asthma Readers of this article also read: Performance in L1 and L2 observed in Arabic-Hebrew bilingual aphasic following brain tumor: A case constitutes double dissociation Evidence-based decision-making within the context of globalization: A “Why–What–How” for leaders and managers of health care organizations The cognitive basis of diglossia in Arabic: Evidence from a repetition priming study within and between languages Epigenomics in cancer management Amino acid-responsive Crohn's disease: a case study DataGenno: building a new tool to bridge molecular and clinical genetics Evaluation of in-vitro antibiotic susceptibility of different morphological forms of Borrelia burgdorferi Long-term treatment of bipolar disorder with a radioelectric asymmetric conveyor Comparison of two treatments for coxarthrosis: local hyperthermia versus radio electric asymmetrical brain stimulation Radio electric asymmetric brain stimulation in the treatment of behavioral and psychiatric symptoms in Alzheimer disease
The influence of education leadership in inviting schools in the United States of America
GM Steyn
South African Journal of Education , 2005,
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