1,663 research outputs found

    Asymptotic analysis and spectrum of three anyons

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    The spectrum of anyons confined in harmonic oscillator potential shows both linear and nonlinear dependence on the statistical parameter. While the existence of exact linear solutions have been shown analytically, the nonlinear dependence has been arrived at by numerical and/or perturbative methods. We develop a method which shows the possibility of nonlinearly interpolating spectrum. To be specific we analyse the eigenvalue equation in various asymptotic regions for the three anyon problem.Comment: 28 pages, LaTeX, 2 Figure

    Display For Command, Control, Communication and Intelligence System

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    Display subsystem is an important part of command, control, communication and intelligence(C31) system. The display used in C31 system for air defence should provide a panoramic view of thecomplete air segment under its command and control in real-time. The necessary information requiredfor taking a quick decision should be available to the commander in easily understandable graphicformat This paper describes salient features of the display known as synthetic radar situation display(SRSD) developed by the Defence Electronics Research Laboratory (DLRL), Hyderabad, for such application

    Gravity waves observed from the Equatorial Wave Studies (EWS) campaign during 1999 and 2000 and their role in the generation of stratospheric semiannual oscillations

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    International audienceThe altitude profiles of temperature fluctuations in the stratosphere and mesosphere observed with the Rayleigh Lidar at Gadanki (13.5° N, 79.2° E) on 30 nights during January to March 1999 and 21 nights during February to April 2000 were analysed to bring out the temporal and vertical propagation characteristics of gravity wave perturbations. The gravity wave perturbations showed periodicities in the 0.5?3-h range and attained large amplitudes (4?5 K) in the mesosphere. The phase propagation characteristics of gravity waves with different periods showed upward wave propagation with a vertical wavelength of 5?7 km. The mean flow acceleration computed from the divergence of momentum flux of gravity waves is compared with that calculated from monthly values of zonal wind obtained from RH-200 rockets flights. Thus, the contribution of gravity waves towards the generation of Stratospheric Semi Annual Oscillation (SSAO) is estimated

    Temperature Variation of the Photoelastic Constants of Ammonium Chloride

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    REVIEW OF PULMONARY EMBOLISM

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    Pulmonary embolism is a blockage of main artery or one of its branches of lung by the fat, amniotic fluid, embolisation of air or any other foreign substances. It is also due to formation of thrombus [blood clot] in the arteries of lung. Due to the pulmonary embolism the blood circulation in the body will be effected. Sometimes PE leads to death also by the lacking of breathing. In USA the annual incidence rates per 1000 persons aged 65-69 are 1.3 affected by pulmonary embolism. The diagnosis of pulmonary embolism at the earlier stage will be difficult because the symptoms like difficulty in breathing and chest pain are not easily differentiated from the other diseases like myocardial infarction. The usage of drugs like anti coagulants and thrombolytic cause bleeding problems even though they shows the antagonistic activity of pulmonary embolism at higher doses. Physician responsibility is to successfully avoid bleeding disorders are at the time of prevention of pulmonary embolism. And also by conducting of programs which should strive to coordinate care, by region wide guidelines and by implementing of care programs there is a chance to elaborate knowledge about the pulmonary embolism to the physicians and also there is a chance to bring awareness among the public which may decreases the number deaths due to pulmonary embolism annually. KEY WORDS: Pulmonary embolism, myocardial infraction, intra vascular co agulation, e.t.c

    Radiation and Chemical Reaction Effects on Unsteady MHD Free Convective Periodic Heat Transport Modeling In a Saturated Porous Medium for Arotating System

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    A rotating model is extended for a two-dimensional, unsteady, incompressible electrically conducting, laminar immediate convection boundary layer flow of light and mass communicate in a saturated porous crystal ball gazer, among an overall vertical porous surface in the perseverance of radiation and vicious circle effects was considered. The fundamental equations governing the flow are in the art an element of partial differential equations and have been reduced to a inhere of non-linear ordinary differential equations by applying suitable similarity transformations. The problem is tackled analytically using classical two term perturbation technique. Pertinent results with respect to embedded parameters are displayed through graphically for the velocity, Temperature, concentration, skin friction, Sherwood number, Nusselt number are discussed qualitatively

    Prevalence of thyroid dysfunction and its association with controlled and uncontrolled type 2 diabetes mellitus in northern Andhra Pradesh population: a retrospective study

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    Background: The two important endocrinopathies, diabetes mellitus and thyroid dysfunction are interrelated to each other where the correlation is poorly understood. The thyroid dysfunction is more frequent in diabetics than general population. The present study was aimed to know the prevalence of thyroid dysfunction in type 2 diabetes mellitus (T2DM) and its association with controlled and uncontrolled T2DM.Methods: A retrospective study of 600 T2DM patients between 13-60 years of age with known thyroid status were included and the following parameters were examined: age, sex, body mass index (BMI), fasting blood sugar (FBS), HbA1C, free triiodothyronine (fT3), free tetraiodothyronine (fT4) and thyroid stimulating hormone (TSH).Results: The prevalence of thyroid dysfunction in T2DM patients was found to be 26.5% whereas 9% in healthy controls. Significantly elevated levels of FBS, HbA1C and TSH were observed whereas the levels of fT3, fT4 were found to be low in patients when compared to controls. Subclinical hypothyroidism (SCH) in diabetics (both controlled and uncontrolled) was more prevalent (15%) than it was found in healthy controls (5%). Similarly, overt hypothyroidism was also found to be high in diabetic patients (6%) as compared to healthy controls (2%). Significant difference (p <0.05) in the levels of TSH was found between group I (Controlled T2DM) and II (uncontrolled T2DM patients), also between groups II and III (Controls). Group II patients were found to have significant low levels of fT3 as compared to other two groups (Group I and III) (p<0.005).Conclusions: As SCH is more frequent in T2DM diabetes mellitus and untreated SCH patients have higher rate of complications, periodical screening is advised for thyroid dysfunction to prevent micro vascular and cardiovascular complications

    Single Impurity Anderson Model with Coulomb Repulsion between Conduction Electrons on the Nearest-Neighbour Ligand Orbital

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    We study how the Kondo effect is affected by the Coulomb interaction between conduction electrons on the basis of a simplified model. The single impurity Anderson model is extended to include the Coulomb interaction on the nearest-neighbour ligand orbital. The excitation spectra are calculated using the numerical renormalization group method. The effective bandwidth on the ligand orbital, DeffD^{eff}, is defined to classify the state. This quantity decreases as the Coulomb interaction increases. In the Deff>ΔD^{eff} > \Delta region, the low energy properties are described by the Kondo state, where Δ\Delta is the hybridization width. As DeffD^{eff} decreases in this region, the Kondo temperature TKT_{K} is enhanced, and its magnitude becomes comparable to Δ\Delta for DeffΔD^{eff} \sim \Delta. In the Deff<ΔD^{eff} < \Delta region, the local singlet state between the electrons on the ff and ligand orbitals is formed.Comment: 5 pages, 3 figures, LaTeX, to be published in J. Phys. Soc. Jpn Vol. 67 No.
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