We study the complete gravitational collapse of a class of inhomogeneous perfect fluid models obtained by introducing small radial perturbations in an otherwise homogeneous matter cloud. The key feature that we assume for ...

Cosmic acceleration may be due to modified gravity, with effective field theory or property functions describing the theory. Connection to cosmological observations through practical parametrization of these functions is ...

Bromine-containing derivatives of aromatic and heteroaromatic compounds are the most important "building blocks" in the assembly of modern Photovoltaic Polymers (PV). While PV is being developed to produce "green" energy, ...

The production of phenol-formaldehyde foams under classical conditions is a long and labourconsuming process. Phenol-formaldehyde foams containing various fillers can be synthesized within 3-5 minutes under microwave ...

Thermal ablation therapy is known as an advantageous alternative to surgery allowing the treatment of multiple tumors located in hard-to-reach locations or treating patients with medical conditions that are not compatible ...

Benchmark calculations of the total and transition energies of the four lowest S-1 states of the beryllium atom are performed. The computational approach is based on variational calculations with finite mass of the nucleus. ...

With the rise of cultural studies, positivism and formalism fell out of favor. But in recent years, altered versions of these methodologies have been suggested as solutions to the deficiencies of the ideological approach ...

Mining exploration is widely spread throughout Kazakhstan and it is an important part of the country’s economy. However, mining can create landslides, as well as both surface and groundwater pollution. The purpose of this ...

Energy storage pile foundations are being developed for storing renewable energy by utilizing compressed air energy storage technology. Previous studies on isolated piles indicate that compressed air can result in pressure ...