Approximate -state Solutions to the Dirac Mobius Square-Yukawa and Mobius Square-quasi Yukawa Problems under Pseudospin and Spin Symmetry limits with Coulomb-like Tensor Interaction

In this paper, we present the Dirac equation for the Mobius-square-Yukawa potentials including the tensor interaction term within the framework of pseudospin and spin symmetry limit with arbitrary spin-orbit quantum number . We obtained the energy eigenvalues and the corresponding wave functions using the supersymmetry method. The limiting cases of this potential model reduce to the Deng-Fan, Yukawa and Coulomb potentials, respectivelyComment: 27pages, 4Tables, 10figure

Solutions of Schr\"odinger Equation with Generalized Inverted Hyperbolic Potential

We present the bound state solutions of the Schr\"odinger equation with generalized inverted hyperbolic potential using the Nikiforov-Uvarov method. We obtain the energy spectrum and the wave function with this potential for arbitrary - state. We show that the results of this potential reduced to the standard known potentials - Rosen-Morse, Poschl - Teller and Scarf potential as special cases. We also discussed the energy equation and the wave function for these special cases.Comment: 20pages, 5figure

The Challenges of Human Security in Sub-Saharan Africa: The Way Forward

The increased interaction of societies on a global dimension evidently provides for the overall need for human security especially in the African continent where the number of conflicts is still overwhelming. This paper examined the challenges of human security in Sub-Saharan Africa with a view to suggesting the way forward. Anchored on a qualitative method and with reliance on secondary sources of data, it argued that there is need to better understand the nature of the rapidly evolving large-scale challenges that can have a major impact on individuals and populations. The paper further observed that it is imperative to strengthen the mobilization of wide range of actors involved in policy formulation that affects the unfolding dangers of human security in order to curtail them. It recommended the promotion of human capacity building in African states, assistance to states in the region to tackle HIV/AIDs and other contagious diseases, promoting the active participation of communities and representatives of civil society in the planning and implementation of development programs among others and concluded that though the challenges of human security in the continent are overwhelming, a proper implementation of these measures could ensure security for the vulnerable populations in the region

Compatibility Study of Polystyrene and Poly Methyl-methacrylate Blends using FTIR and Viscometry Methods

Communication in Physical Sciences 2019, 4(2): 81-86 Authors: N. S. Akpan, U. Idio, S. Usman, A. Idowu, M. Ugbaja, & L. Zango Received 03 December 2019/Accepted 29 December 2019 Polystyrene and poly(methyl - methacrylate) are widely applied polymers but suffer from some property’s failures such as brittleness, especially when used in crude form, In view of this, and other materials requirements that is expected to be met by most polymers. Thisstudy seeks to investigate compatibility of various blends of polystyrene and poly (methyl methacrylate) (in chloroform solvent) using Fourier transformed infra-red spectroscopy and viscometry methods. Results obtained from Fourier transformed infra-red spectroscopy indicated that blending did not change the functional groups of the polymers significantly,which pointed towards the existent of little or no interaction. Viscometry measurements revealed that plots of relative viscosity versus concentration, specific viscosity versus concentration and reduced viscosity versus concentration were respectively parallel to each other and assumed S-shaped which also indicated the absence of interaction, hence incompatibility. It is concluded in this work that at the operation temperature of 303 K, there is no compatibility between polystyrene and poly(methylmethacrylate) blends

What Are The Growth Effect of Foreign Direct Investment And Trade in WAMZ

This study contributes to the debate about the impact of FDI and trade on growth using current panel data (1980-2010) from the WAMZ nations. Using a variety of modern estimation techniques, our overall findings showed that FDI has a significant positive impact on growth in the WAMZ. This impact was robust and unambiguous in all the alternative estimations that adjusted for the problem of feedback between FDI and growth as well as between trade and growth.  However, the impact of trade on growth in the WAMZ was found to be negative- a result that tends to portray current un-favorable trade composition in the zone. In conclusion, we caution that until the current trade composition (characterized by persistent trade deficits, export of primary products, overdependence on imports, etc.) is reversed, countries in WAMZ may not be able to effectively use trade to record any significant growth in their economies. Key words: WAMZ, FDI, Panel Data, Growt

Electrochemical Investigation of the Inhibitory Action of Ciprofloxacin Drug on the Acid Corrosion of Mild Steel

Electrochemical investigation of mild steel corrosion in acidic medium inhibited by an environmentally safe and commercially available low cost drug, ciprofloxacin, was carried out at room temperature. The results obtained show that the drug provided a good protection for mild steel in the acid medium investigated. The inhibition efficiency was found to increase with a corresponding increase in the concentration of the drug. The adsorption process that facilitated the inhibition mechanism was found to follow the Langmuir’s adsorption isotherm. Keywords: linear polarization resistance (LPR), corrosion inhibition, mild steel, ciprofloxacin dru

Electrochemical Linear Polarization Studies of Amodiaquine Drug as a Corrosion Inhibitor for Mild Steel in 0.1M HCL Solution

The effect of amodiaquine on corrosion of mild steel in hydrochloric acid was investigated by linear polarization resistance (LPR) electrochemical method. The results indicated that corrosion inhibition efficiency and degree of surface coverage were increased with rise in the concentration of amodiaquine. The inhibitor followed monolayer chemisorption since it obeyed the Langmuir adsorption isotherm. Keywords: linear polarization resistance (LPR), amodiaquine drug, corrosion inhibitor, mild steel, HC

Relativistic Treatment of Spinless Particles Subject to the Hulthen plus Yukawa Potential with Arbitrary States

We have obtained the bound state energy eigenvalues and the corresponding wave functions of the Klein – Gordon particles for the unequal scalar and vector Hulthen plus Yukawa potential.  The generalized parametric form of Nikiforov-Uvarov (NU) method is used in the calculation.  By approximate choice of potential parameters our potential reduces to three well known potentials: Hulthen, Yukawa and Coloumb potentials and their corresponding energies are evaluated. Our results under limiting cases are consistent with those available in the literature. We have also obtained the numerical values of our results. Keywords: Klein – Gordon equation, Hulthen potential, Yukawa potential, Nikiforov-Uvarov (NU) method

The Influence of Parental Occupation and Parental Marital Status on Perception of HIV/AIDS Pandemic among Secondary School Students in Calabar Education Zone, Cross River State, Nigeria

The aim of this study was to determine the degree to which parental occupation and marital status of parents influence perception of HIV/AIDS pandemic among secondary school students in Calabar Education Zone. Ever since the advent of HIV/AIDS, several attempts and campaigns have been made by international bodies, agencies, the government, etc., to curtail and subdue the effect of the deadly disease. This attempt has made many to know the magnitude of danger the virus possesses to human life. However, in spite of these attempts, some students find it difficult to acknowledge and believe that HIV/AIDS exist. Perception of HIV/AIDS in this context, refers to the awareness students has about causes, mode of transmission, prevention, and treatment, especially intuitively on HIV/AIDS. The main purpose of this study was to determine the influence of parental occupation and marital status of parents on perception of HIV/AIDS pandemic among secondary school students in Calabar Education Zone. The population of this study was made up of all the SS1, 2, and 3 Students and 1,200 students selected randomly as the sample for this study. Data was collected using was a facts finding questionnaire titled family variables and students perception of HIV/AIDS’ (FVSPA). Major findings after analysis were thus; parental occupation has significant influence on students’ perception of HIV/AIDs. Parental marital status has significant influence on students’ perception of HIV/AIDs. It was recommended that Parents should, against all odds carve out time daily or weekly to have an interactive session with their children in order to address the myths surrounding not just HIV/AIDs, but other relevant health issues. Parents should also create a conducive environment for their children to thrive and not complicate issues by living in chaos which can predispose the children to a host of negative thinking and perceptions