To prove a direct relationship between the quasi-static electric field disturbances and seismic activity is a difficult, but actual task of the modern ionosphere physics. This paper presents new results on the processing and analysis of the quasi-static electric field in the upper ionosphere (h=800–900 km) observed from the satellite INTERCOSMOS-BULGARIA-1300 over earthquakes’ source regions (s...

The refractory HEAs block material was prepared by powder sintering, using an equal atomic proportion of mixed TiZrNbMoV and NbTiAlTaV metal raw materials. phase analyzed, XRD. microstructure the specimen observed, employing a scanning electron microscope, compressive strength measured, electronic universal testing machine. results showed that bulk cubic alloy structure obtained sintering at 13...

Composite ceramics of stabilizer oxide coated ytterbia-samaria costabilized zirconia (1.5Yb1.5Sm-TZP) and 24–32 vol% tungsten carbide as an electrically conductive dispersion were manufactured by hot pressing at 1300–1400 °C for 2 h 60 MPa pressure. The materials characterized with respect to microstructure, phase composition, mechanical properties electrical discharge machinability die sinking...

Dental enamel is highly transparent at near-IR wavelengths and several studies have shown that these wavelengths are well suited for optical transillumination for the detection and imaging of tooth decay. We hypothesize that these wavelengths are also well suited for imaging cracks in teeth. Extracted teeth with suspected cracks were imaged at several wavelengths in the near-IR from 1300-1700-n...

Protein synthesis inhibitors are commonly used for measuring protein degradation rates, but may cause cytotoxicity via direct or indirect mechanisms. This study aimed to identify concentrations providing optimal inhibition in the absence of overt cytotoxicity. Actinomycin D, cycloheximide, emetine, and puromycin were assessed individually, and in two-, three-, and four-drug combinations for pro...

Mullite (3Al2O3.2SiO2) and 10 mol% silica added zirconia (10 SiO2 - 90 ZrO2) ceramic powders were synthesized by conventional processing route. The mixtures prepared mechanical alloying method using ball mill in acetone environment. To synthesize mullite, Al2O3 mixture was with stoichiometric proportions fired it the air at 1600 oC for 3 h. And composites 1300 2 Thus, mullite composite phases o...