Approximate scattering state solutions of DKPE and SSE with Hellmann Potential

We study the approximate scattering state solutions of the Duffin-Kemmer-Petiau equation (DKPE) and the spinless Salpeter equation (SSE) with the Hellmann potential. The eigensolutions, scattering phase shifts, partial-waves transitions and the total cross section for all the partial waves are obtained and discussed. The dependence of partial-waves transitions on total angular momentum number, angular momentum number, mass combination and potential parameters were presented in the figures.Comment: 9 pages, 6 figure

Entanglement fidelity for electron-electron interaction in strongly coupled semiclassical plasma and under external fields

This paper presents the effects of AB-flux field and electric field on electron-electron interaction, encircled by a strongly coupled semiclassical plasma. We found that weak external fields are required to perpetuate a low-energy elastic electron-electron interaction in a strongly coupled semiclassical plasma. The entanglement fidelity in the interaction process has been examined. We have used partial wave analysis to derive the entanglement fidelity. We found that for a weak electric field, the fidelity ratio for electron-electron interaction increase as projectile energy increase but remains constant or almost zero for a strong electric field. Our results provide an invaluable information on how the efficiency of entanglement fidelity for a low-energy elastic electron-electron interaction in a strongly coupled semiclassical plasma can be influenced by the presence of external fields

The Human Microbiome and Its Impacts on Health

(e human microbiome comprises bacteria, archaea, viruses, and eukaryotes which reside within and outside our bodies. (ese organisms impact human physiology, both in health and in disease, contributing to the enhancement or impairment of metabolic and immune functions. Micro-organisms colonise various sites on and in the human body, where they adapt to specific features of each niche. Facultative anaerobes are more dominant in the gastrointestinal tract, whereas strict aerobes inhabit the respiratory tract, nasal cavity, and skin surface. (e indigenous organisms in the human body are well adapted to the immune system, due to the biological interaction of the organisms with the immune system over time. An alteration in the intestinal microbial community plays a major role in human health and disease pathogenesis. (ese alterations result from lifestyle and the presence of an underlying disease. Dysbiosis increases host susceptibility to infection, and the nature of which depends on the anatomical site involved. (e unique diversity of the human microbiota accounts for the specific metabolic activities and functions of these microorganisms within each body site. It is therefore important to understand the microbial composition and activities of the human microbiome as they contribute to health and disease

Effectiveness of Library Service and Resources in an African University

This paper examined the effectiveness of library service and resources in an African university. To elicit the necessary information, a questionnaire was randomly administered to 500 students from 100 – 500 level of Ladoke Akintola University of Technology, Ogbomoso, Oyo-state, Nigeria. A response rate of 100% was achieved. Using frequency and simple percentage to analyze the data, the results showed that majority 73% of the respondents find the university library service effective and (53%) agree that its resources are adequate for their various information needs. The study concluded by noting that there were inadequacies which emanated from short fall in acquisitions, but the library resources provided were easily accessible and fairly adequate to meet the information needs of the users. Based on the findings, recommendations were made in order to boost the library services and resources provided to meet more of the demands of the teeming population of users. Keywords: Effectiveness of library, Library service, Library resources, African universit

HIV control in low-income countries in sub-Saharan Africa: are the right things done?

HIV control efforts in sub-Saharan Africa meet with difficulties. Incidence and prevalence remains high, and little behaviour change seems to have taken place. The focus on HIV control has shifted to anti-retroviral therapy (ART), although this is unlikely either to be cost-effective or the reduce the incidence of HIV. There is reason to change the current approach. Three questions arise: Is there a need to adjust the view on the determinants of the HIV epidemic in sub-Saharan Africa? Are the right things being done to control HIV? Are the things that are being done, done in the right way? We try to answer these questions. The determinants of the epidemic are reviewed and summarized in Figure 2. The need to adjust the view on the determinants and get rid of myths is stressed. A possible, locally adaptable intervention mix is outlined. Male circumcision is a key intervention where socially acceptable. Operationalisation and organisational changes are briefly discussed. Conclusively, the need for a “social revolution” through the opening up of a discussion on sexuality in the community, as well as a focus on cost-effective interventions and a slimmed down, more effective organisation is underlined. Such steps might make it possible to considerably reduce HIV-incidence, even in low-income countries