A theoretical model that relates the rotational Doppler shift of a photon and the rotational velocity of the lenses traversed by the beam of light, is presented. The mathematical relation, which is resolved in the context of a four-dimensional Minkowski flat spacetime and Cartesi...
Open access
Research Article10.9734/psij/2020/v24i1030220
Regular execution of quality control (QC) tests in medical diagnostic X-ray units is primarily important to provide high-quality images and proper diagnoses with least hazard. The performance criteria in diagnostic radiology in Zanzibar Islands, Tanzania were followed in accordan...
Open access
Research Article10.9734/psij/2020/v24i1230228
The appropriate placements of the four-dimensional spacetimes of different universes make their coexistence possible, such that corresponding points in spacetimes within the universes are not separated in space or time. The corresponding points do not touch, because they are poin...
Open access
Research Article10.9734/psij/2020/v24i1230229
Self-organization in small systems of particles with simple dynamic laws has been simulated. The purpose of this work is to investigate self-organization in small systems where we could follow individual particles. The intention is to look for pattern formation as the system ev...
Open access
Research Article10.9734/psij/2020/v24i1230230
First principles pseudopotential method based on density functional theory is used to investigate the Structural, Mechanical, Phonon, Thermodynamic and Electronic properties of Mg2Sn. The equilibrium properties including lattice constant, bulk modulus, pressure derivative cohesiv...
Open access
Research Article10.9734/psij/2020/v24i1230232
The Wave-Particle Duality is a basic property of microscopic particles. As a basic concept of quantum mechanics, the wave-particle duality theory from elementary particles to big molecules had been verified by lots of experiments. Different from electromagnetic wave, the matter w...
Open access
Research Article10.9734/psij/2020/v24i1130221
The thermodynamic properties at equilibrium, in this case, enthalpy, pressure, temperature, mass fraction, of working pairs are very important for researchers and in the design of absorption refrigeration systems. Although some authors have carried out their research in this dire...
Open access
Research Article10.9734/psij/2020/v24i1130223
The Kondo interaction coupling, Heisenberg exchange coupling, and Coulomb interactions within d-sites, were introduced in a one dimensional Periodic Anderson Model Hamiltonian (PAMH) to further investigate the effects of interaction parameters on the ground state energy of system...
Open access
Research Article10.9734/psij/2020/v24i1130226
The design of a vertical axis wind turbine (Darrieus type) adapted to the site of Cotonou in the coastal region of Benin was investigated. The statistical study of winds based on the Weibull distribution was carried out on hourly wind data measured at 10 m above the ground by the...
Open access
Research Article10.9734/psij/2020/v24i1130227
This research has focused on a radon measurement campaign that was carried out in two dwellings in a residential building located in Madrid. A new methodology has been used in this field, such as the use of cubes based on On-Line Analytical Processing in SQL Server Analysis Servi...
Open access
Research Article10.9734/psij/2020/v24i1030219