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Search Results: 1 - 10 of 144 matches for " Zakir Jahangirli "
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The Growth of Single Crystals of InGaSe2 Compounds, Their X-Ray-Phase Analysis, Electronic Structure and Optical Functions  [PDF]
Eldar Gojaev, Zakir Jahangirli, Pyuruza Alieva, Khatira Khalilova, Tahir Musaev
Open Journal of Inorganic Non-metallic Materials (OJINM) , 2013, DOI: 10.4236/ojinm.2013.31001

Growing of InGaSe2 single crystals has been carried out by employing the Brijman-Stockbargor methods. On the base of X-ray-analysis it has been found that the given phase is crystallized into tetragonal symmetry. The temperature dependence of electric conductivity has been studied. Band structure has been computed. Optical functions, effective masses of electrons and holes have been calculated. Origin of formation of valence and conductance bands as well as the width of forbidden band for InGaSe2 have been determined.

Pain Hypersensitivity: A Bio-Psychological Explanation of Chronic Musculoskeletal Pain and Underpinning Theory  [PDF]
Zakir Uddin, Joy C. MacDermid
Pain Studies and Treatment (PST) , 2014, DOI: 10.4236/pst.2014.22007

Hypersensitivity is a phenomenon that has a dual role: adaptive (protective) and maladaptive (pathological) based on different aspects of the pain mechanism. The mechanism of hypersensitivity has not been fully defined. However, it is known that over-excitability (too much sensitivity) of neurons can arise in both peripheral and central components of the nervous system. Pain theories can be useful in helping to explain complex phenomenon like hypersensitivity. The Gate control theory and other more bio-psychological pain models may assist us to understand a mechanism of chronic musculoskeletal pain. This article discusses a mechanism based pain model.

Urban Youth Culture in Bangladesh under the Sway of Cultural Globalization: A Descriptive Analysis  [PDF]
Muhammad Zakir Hossin, Mohammad Mohiuddin
Sociology Mind (SM) , 2015, DOI: 10.4236/sm.2015.53019
Abstract: This is a descriptive cross-sectional study which aims to present the contemporary youth culture in Dhaka, the capital city of Bangladesh, with an emphasis on the underlying role of cultural globalization. To meet the objective of the study, a survey was conducted in 2012 among the students of three leading private universities in Dhaka city. The central theme of the study revolves around the idea that globalization as a process transforms our cultures and affects our lives wherever we live. There has been a heated debate among the researchers on the issue of media effects on the youths. The debate mainly centers around the question: Does what our young generation watch on the global media really influence their behaviors and choices, or the norms and values associated with those behaviors and choices are strictly learned through the guidance of parents, teachers, peers, and the society at large? This study documents that the global media have large-scale impact on the audiences who are exposed to them. As the survey findings indicate, the urban youth culture in Bangladesh is no longer identical to her long-standing traditional patterns but is found to be melting into western norms of dress-codes, food habits, attitude, and life styles. The study demonstrates that the young generation in urban Bangladesh prefers trendy clothes, fast food, western style of marriage and family, western music, movies, festivals, and so on, reflecting a shift toward a consumer culture with global values.
An Approach to Load Balancing & Unity Power Factor Control in Multi-phase (Six-phase) Load Circuits Using Multi-phase DSTATCOM
Zakir Husain
Lecture Notes in Engineering and Computer Science , 2012,
Save Human Life Society
Husain Zakir
Indian Journal of Community Medicine , 1986,
The Theory of Stochastic Space-Time. II. Quantum Theory of Relativity
Zahid Zakir
Physics , 1999, DOI: 10.9751/TPAC.3200-014
Abstract: The Nelson stochastic mechanics is derived as a consequence of the basic physical principles such as the principle of relativity of observations and the invariance of the action quantum. The unitary group of quantum mechanics is represented as the transformations of the systems of perturbing devices. It is argued that the physical spacetime has a stochastic nature, and that quantum mechanics in Nelson's formulation correctly describes this stochasticity.
The Theory of Stochastic Space-Time. 1. Gravitation as a Quantum Diffusion
Zahid Zakir
Physics , 1999, DOI: 10.9751/TPAC.3000-012
Abstract: The Nelson stochastic mechanics of inhomogeneous quantum diffusion in flat spacetime with a tensor of diffusion can be described as a homogeneous one in a Riemannian manifold where this tensor of diffusion plays the role of a metric tensor. It is shown that the such diffusion accelerates both a sample particle and a local frame such that their mean accelerations do not depend on their masses. This fact, explaining the principle of equivalence, allows one to represent the curvature and gravitation as consequences of the quantum fluctuations. In this diffusional treatment of gravitation it can be naturally explained the fact that the energy density of the instantaneous Newtonian interaction is negative defined.
C-symmetric quantization of fields leading to a natural normal ordering
Zahid Zakir
Physics , 2007,
Abstract: At the quantization of fields, due to the non-linear character of the time reversal, the creation-annihilation operators for the negative frequency modes should be replaced to the operators of antiparticles not directly in the field operators, but in the operator products. For the standard minimal Lagrangians (asymmetrical under the complex conjugated fields) it is shown that the charge conjugation (C-) symmetry conditions for the Hamiltonian and the charge operator lead to the identities for the operator products allowing one to replace the negative frequency operator products to the positive frequency ones. At the same time the operators in observables become normal ordered and the zero-point energy does not appear. Only the symmetrized under the field operators Lagrangians lead to the zero-point energy. The confrontation by the experiments of the such C-symmetric quantization of fields and the solution some of the vacuum energy problems are discussed.
General Relativity Constraints the Proper Times and Predicts the Frozen Stars Instead of the Black Holes
Zahid Zakir
Physics , 2007, DOI: 10.9751/TPAC.2497-006
Abstract: In a static gravitational field an intersection of a worldline by a global hypersurface of simultaneity t=const gives an invariant constraint relating the proper time of this event by t. Since at any finite t the such constrained proper time intervals are less than reqiured for crossing a horizon, general relativity predicts the gravitational freezing of proper times in stars with time-like or null geodesics everywhere. The time dilation stabilizes contracting massive stars by freezing, which is maximal but finite at the centre, and the surface is frozen near the gravitational radius. The frozen stars (frozars) slowly defrost due to emissions and external interactions, the internal phase transitions can initiate refreezing with bursts and explosions.
Are Strings Thermostrings?
Zahid Zakir
Physics , 1998, DOI: 10.9751/TPAC.3400-016
Abstract: In the method of thermostring quantization the time evolution of point particles at finite temperature kT is described in a geometric manner. The temperature paths of particles are represented as closed (thermo)strings, which are swept surfaces in space-time-temperature manifold. The method makes it possible a new physical interpretation of superstrings IIA and heterotic strings as point particles in a thermal bath with Planck temperature.
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