Sentence examples for levels of quartz from inspiring English sources

Finally we added 3 levels of quartz (Q) to the mixes.

Because of the presence of important levels of quartz sand in the cellular concrete materials, the energy necessary to grind the alternative raw material in comparison with comparable classic raw materials was investigated as well as the influence of the final particle size distribution of the Cold Clinker Meal (CCM) on the mineralogical composition of the final clinkers.

Under such circumstances lesions resembling silicotic nodules may be found, but with the customarily lower levels of quartz the pathological features assume the form characteristic of coal workers.

Concrete having quartz sandstones as coarse aggregates and crumb rubber as fine aggregates are recommended to be used at 50% substitution level of quartz sandstone.

The precipitation of secondary silica in karst terrains occurs when downward-percolating meteoric waters reach the saturation level of quartz (~ 6 ppm) [50] or amorphous silica (~ 80 ppm) while passing through the chert rubble breccia [46, 51].

In step 1 of the intervention mapping approach, insight into the underlying factors causing elevated levels of occupational quartz exposure was gained.

Approximately 0.5 mg of the solid residues were loaded into a quartz tube that was filled with a thin layer of quartz wool in advance.

Third, organizational factors include the responsibility of companies and sector organizations for reducing high level of occupational quartz exposure.

This paper presents one wafer level packaging approach of quartz resonator based on through-silicon via (TSV) interposer with metal or polymer bonding sealing of frequency components.

The optimum design, simulation, fabrication, and performances of wafer level packaging approach of quartz resonator based on TSV interposer with metal or polymer bonding are reported in this paper.

The sandstone levels are dominated by poorly rounded clasts of quartz, plagioclase, and biotite, showing an identical composition to the underlying rocks of the Mamil Choique Formation.