1,836 research outputs found
Comparison of direct total iron binding capacity by light MgCO3 and heavy MgCO3
Background: The aim of the study is focused to measure TIBC by calculated method (TIBC using the magnesium carbonate- MgCO3 adsorption), measurement of TIBC by calculatory method from automated UIBC and automated Iron measurement. Latter these two values are to be added and would give an additive result of TIBC. The experiment would be performed by using the light MgCO3 powder and the heavy MgCO3 powder and check for any differences in their respective values. Regression analysis, Bland Altman analysis or histogram analysis of TIBC results obtained by calculated methods in patient samples to find correlation between the two methods is being performed.Methods: Samples received for analysis of tests, regardless of patient identification with sample volume serum were used for the study. After complete analysis and reporting of the sample, the leftover serum was used. Serum was kept at room temperature. Then the calculated TIBC from UIBC and the IRON were compared after doing batch calibration for UIBC and lot calibration of Iron.Results: It was found that, this study had positive bias by the usage of the heavy MgCO3 powder. Positive bias in unsaturated iron binding capacity observed by both methods is studied and further investigated using data obtained during the experiment.Conclusions: There is a higher yield of serum obtained with the heavy MgCO3 powder, TIBC calculated from iron and unsaturated iron binding capacity as compared to TIBC measured directly using the light MgCO3 powder
Anisotropic Dark Energy and the Generalized Second Law of Thermodynamics
We consider a Bianchi type model in which anisotropic dark energy is
interacting with dark matter and anisotropic radiation. With this scenario, we
investigate the validity of the generalized second law of thermodynamics. It is
concluded that the validity of this law depends on different parameters like
shear, skewness and equation of state.Comment: 12 pages, accepted for publication in Phys. Scr. arXiv admin note:
text overlap with arXiv:1008.0692 and arXiv:1106.241
Emergent Universe with Exotic Matter in Brane World Scenario
In this work, we have examined the emergent scenario in brane world model for
phantom and tachyonic matter. For tachyonic matter field we have obtained
emergent scenario is possible for closed, open and at model of the universe
with some restriction of potential. For normal scalar field the emergent
scenario is possible only for closed model and the result is identical with the
work of Ellis et al [2], but for phantom field the emergent scenario is
possible for closed, open and at model of the universe with some restriction of
potential
Gravitational collapse due to dark matter and dark energy in the brane world scenario
Gravitational collapse of FRW brane world embedded in a conformaly flat bulk
is considered for matter cloud consists of dark matter and dark energy with
equation of state . The effect of dark
matter and dark energy is being considered first separately and then a
combination of them both with and without interaction. In some cases the
collapse leads to black hole in some other cases naked singularity appears.Comment: 10 Latex Pages, RevTex style, 4 figure
Density Evolution in the New Modified Chaplygin Gas Model
In this paper, we have considered new modified Chaplygin gas (NMCG) model
which interpolates between radiation at early stage and CDM at late
stage. This model is regarded as a unification of dark energy and dark matter
(with general form of matter). We have derived the density parameters from the
equation of motion for the interaction between dark energy and dark matter.
Also we have studied the evolution of the various components of density
parameters.Comment: 6 Latex pages, 4 figures, RevTex styl
Chiral zero modes in non local domain walls
We study a generalization of the Callan-Harvey mechanism to the case of a non
local mass. Using a 2+1 model as a concrete example, we show that both the
existence and properties of localized zero modes can also be consistently
studied when the mass is non local. After dealing with some general properties
of the resulting integral equations, we show how non local masses naturally
arise when radiative corrections are included. We do that for a 2+1 dimensional
example, and also evaluate the zero mode of the resulting non local Dirac
operator.Comment: 20 pages, LaTeX, 4 figures; typos and content of sections 2 and 3
correcte
Coherent Error Suppression in Multi-Qubit Entangling Gates
We demonstrate a simple pulse shaping technique designed to improve the
fidelity of spin-dependent force operations commonly used to implement
entangling gates in trapped-ion systems. This extension of the
M{\o}lmer-S{\o}rensen gate can theoretically suppress the effects of certain
frequency and timing errors to any desired order and is demonstrated through
Walsh modulation of a two-qubit entangling gate on trapped atomic ions. The
technique is applicable to any system of qubits coupled through collective
harmonic oscillator modes
The Ramanujan master theorem and its implications for special functions
We study a number of possible extensions of the Ramanujan master theorem,
which is formulated here by using methods of Umbral nature. We discuss the
implications of the procedure for the theory of special functions, like the
derivation of formulae concerning the integrals of products of families of
Bessel functions and the successive derivatives of Bessel type functions. We
stress also that the procedure we propose allows a unified treatment of many
problems appearing in applications, which can formally be reduced to the
evaluation of exponential- or Gaussian-like integrals.Comment: 12 page
Constraints on the Parameterized Deceleration Parameter in FRW Universe
Confirmation of accelerated expansion of the universe probed the concept of
dark energy theory, and since then, numerous models have been introduced to
explain its origin and nature. The present work is based on reconstructing dark
energy by parametrization of the deceleration parameter in the FRW universe
filled with radiation, dark matter, and dark energy. We have chosen some
well-motivated parametrized models 1-3 in an attempt to investigate the energy
density in terms of deceleration parameters by estimating the cosmological
parameters with the help of different observational datasets. Also, we have
introduced a new model 4 for the parametrization of the deceleration parameter.
Then we analyzed the cosmography parameters using the best-fit values of the
parameters. Using the information criteria, we have examined the viability of
the models
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