In this study, we used the Path integral method to obtain the bound state solutions of the Hellmann potential. Firstly we analytically derived the radial kernel expression of the Hellmann potential using the approximation of the centrifugal term and space-time transformations. Th...
Open access
Research Article10.9734/psij/2019/v21i130094
During 2018 the intensity and its variation in time were monitored, every hour the presence of radon gas in two distinct points near each other in São José dos Campos, Brazil. One point was situated 25 meters high (ACA tower) and the other 3 meters high (ITA laboratory). Two iden...
Open access
Research Article10.9734/psij/2019/v21i130093
Effects of meteorological parameters of relative humidity and wind direction on visibility in the Niger Delta, Nigeria (4.15°N-7.17°N, 5.05°E-8.68°E) for a period of 31 years (1981-2012) have been investigated. The data on visibility, relative humidity and wind direction were obt...
Open access
Research Article10.9734/psij/2019/v21i130092
This paper analyzes differences between theoretical elements of the Standard Model electroweak theory and corresponding properties of a dipole-dipole weak interaction theory. The analysis relies on a number of self-evident criteria that are valid for quantum theories. The results...
Open access
Research Article10.9734/psij/2019/v21i130091
This study considered the setup of gamma transmission facility to develop a methodology for determining the amount of cement in sandcrete block. Twelve block samples was moulded in varying sand/cement ratio. The 12 samples each were measured both in volume, masses and density. Ea...
Open access
Research Article10.9734/psij/2019/v21i130090
The effect of temperature and relative humidity on photovoltaics installed close to Calabar River was investigated to evaluate their performance. The data used in the research was obtained by in-situ measurement approach using a KT-908 precision digital hygrometer and thermometer...
Open access
Research Article10.9734/PSIJ/2018/44760
Recently, considerable attention has been drawn on the search for novel anticancer drugs in order to improve survival rates and wellbeing of cancer patients. 1,2,3-triazole is an attractive scaffold possessing diverse biological activities. The quantitative structure–activity rel...
Open access
Research Article10.9734/PSIJ/2018/46207
Aims: This research is aimed at using advanced corrosion identification and corrosion inhibition technique to investigate the corrosion inhibition mechanism of Al Alloy (AA5052) in 1.0 M HCl solution using Newboudia laevis leaf extract. Place and Duration of Study: The research w...
Open access
Research Article10.9734/PSIJ/2018/46346
Our paper describes the macroscopical manifestation of the origin of isotope effect via spectroscopic study of the reflection and luminescence spectra of LiH and LiD crystals which are differ by term of one neutron from each other. The experimental results demonstrate the direct...
Open access
Research Article10.9734/PSIJ/2018/40223
The northern coastal zone of Egypt (Mediterranean) is under the force of tension shear zones of African and European plates that generate earthquakes with variable magnitudes. We try to find a spatial relation between the collected seismic points and to evaluate how much these po...
Open access
Research Article10.9734/PSIJ/2018/46208