77 research outputs found
Quantum information entropy of heavy mesons in the presence of a point-like defect
Using Schr\"{o}dinger's formalism, we investigate the quantum eigenstates of
the heavy mesons trapped by a point-like defect and by Cornell's potential. One
implements this defect to the model considering a spherical metric profile
coupled to it. Furthermore, the Nikiforov-Uvarov method is applied to theory to
study the quantum eigenstates of the heavy mesons. To calculate the quantum
information entropy (QIE), one considers the wave functions that describe the
charmonium and bottomonium states. To explore the QIE, we use the well-known
Shannon's entropy formulated at the position and reciprocal space. The analysis
of the QIE gives us relevant information about how the quantum information
change with the variation of the point-like defect. Consequently, considering
the Bialynicki-Birula and Mycielski (BBM) relation, we show how this defect
influences the quarkonium position and momentum uncertainty measures.Comment: 15 pages, 2 figures, 1 tabl
Quantum information entropy of a particle trapped by the Aharonov-Bohm-type effect
In this research article, we use the Shannon's formalism to investigate the
quantum information entropy of a particle trapped by the Aharonov-Bohm-type
effect. For quantum information study, it is necessary to investigate the
eigenstates of the quantum system, i. e., the wave functions and energies of
the quantum states. We assumed that the particle is in principle, confined in a
cylindrical box in the presence of an Aharonov-Bohm-type effect due to
dislocation defect. Analysis of the quantum information entropy, reveals that
the dislocation influences the eigenstates and, consequently, the quantum
information of the system.Comment: 15 pages, 2 captioned figures. Title changed. Enhanced version to
appear in Physica Script
Thermal Properties of Deng-Fan-Eckart Potential model using Poisson Summation Approach
The Deng-Fan-Eckart (DFE) potential is as good as the Morse potential in
studying atomic interaction in diatomic molecules. By using the improved
Pekeris-type approximation, to deal with the centrifugal term, we obtain the
bound-state solutions of the radial Schr\"odinger equation with this adopted
molecular model via the Factorization Method. With the energy equation
obtained, the thermodynamic properties of some selected diatomic molecules(H2 ,
CO , and ScN ) were obtained using Poisson summation method.. The unnormalized
wave function is also derived. The energy spectrum for a set of diatomic
molecules for different values of the vibrational n and rotational l are
obtained. To show the accuracy of our results, we discuss some special cases by
adjusting some potential parameters and also compute the numerical eigenvalue
of the Deng-Fan potential for comparison sake. However, it was found out that
our results agree excellently with the results obtained via other methods.Comment: 29 pages, 18 figures, 4 tables, 4902 word
Incidence and pattern of injuries among residents of a rural area in South-Western Nigeria: a community-based study
<p>Abstract</p> <p>Background</p> <p>Despite the high incidence of infectious diseases in developing countries, injuries still contribute significantly to the health burden. There are few reports of rural, community-based injury surveys in Nigeria. This study describes the incidence and pattern of injuries among the residents of a rural area in South-Western Nigeria.</p> <p>Methods</p> <p>It was a community based cross-sectional study. Two of six census areas were randomly selected and all households in the two areas visited. Information on the sociodemographic characteristics, individual injury events and outcomes was obtained with a questionnaire. Data were analyzed using SPSS version 11.</p> <p>Results</p> <p>Information was obtained on the 1,766 persons in 395 households. Fifty-nine injuries were recorded by 54 people, giving an injury incidence of 100 per 1,000 per year (95% CI = 91.4–106.9). Injury incidence among <30 years was 81.6 per 1,000 per year (95% CI = 62.3–83.1); and 126 per 1,000 per year (95% CI = 98.2–137.4) for those ≥ 30 years (p = 0.013). Injury incidence for females was 46 per 1,000 per year; and 159 per 1,000 per year (p = 0.000) for males. A significantly higher proportion of males (5%) sustained injury compared to females (2%) (p = 0.043). Falls and traffic injures, 15 (25%) each, were the leading causes of injury; followed by cuts/stabs 12 (21%), and blunt injuries, 9 (15%). Traffic injuries were the leading cause of injuries in all age groups except among the 5–14 years where falls were the leading cause of injury. In thirty-four (58%) of those injuries, treatment was at a hospital/health centre; while in two (3%), treatment was by untrained traditional practitioners. Thirty-nine (66%) of the injuries were fully recovered from, and 19 (32%) resulted in disability. There were 2 fatalities in the 5-year period, one (2%) within the study period.</p> <p>Conclusion</p> <p>Injuries were common in Igbo-Ora, though resultant disability and fatality were low. Males and those aged ≥ 30 years had significantly higher proportions of the injured. Falls and traffic injuries were the most commonly reported injuries. Appropriate interventions to reduce the occurrences of injuries should be instituted by the local authorities. There is also need to educate the community members on how to prevent injuries.</p
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