The article deals with long-length tubular electrode-tools made of the engineered composite [(WC+3wt%Co)+3wt%BN)]+14wt%Cu, which, during electrical discharge piercing holes in a hard alloy WC+6wt%Co (ISO 513:2012) optimal mode, have productivity that is almost 8 times higher than process, when it performed using copper electrode-tools. Therewith, wear new material 4.1 ... 4.5 less To obtain hol...

An oxygen-fuelled Hall Effect Thruster is investigated at the Imperial Plasma Propulsion Laboratory vacuum chamber facilities over a different range of discharge channel axial lengths, ceramic walls and anode materials. The purpose using oxygen as propellant to better understand principles water electrolysis Thrusters, which are envisaged use propel thruster. These studies aimed answer whether ...

Stemming length and stemming materials are crucial factors in blasting design, which affect the sustainability of mining. This study investigates influence material on rock fragmentation, recoil, surface strain response through 15 small-scale model tests. The results indicate that when using clay as a material, increasing facilitates fragmentation reduces recoil area. measurements show both ten...

Telomeres are located at each end of eukaryotic chromosomes. Their functional role is genomic stability maintenance. The protective role of telomeres depends on various factors, including number of nucleotides repeats, telomere-binding proteins, and telomerase activity. Organ transplantation is the preferred replacement therapy in the case of chronic kidney disease and the only possibility of s...

Centrifugally purified samples of tobacco mosaic virus were subjected to intense sound vibrations of 9,000 cycles per second for 0, 2, 8, 16, 32, and 64 minutes. The viscosity and stream birefringence of the samples decreased with time of sonic treatment, but no chemical changes were found. Electron micrographs of the samples show that the particles are broken perpendicular to their long axis. ...