The practice of operating machines and mechanisms indicates that bearing wear is one of the main reasons for limiting their durability.This especially applies to DVDs the sliding bearings of crankshafts of car engines, where the intensity of wear of their working surfaces significantly depends on the properties of the lubricant.An experimental stud

Geodetic networks provide accurate three-dimensional control points for mapping activities, geoinformation, and infrastructure works.Accurate computation and adjustment are necessary, as all data collection is vulnerable to outliers.Applying a Least Squares (LS) process can lead to inaccuracy over many points in such conditions.Robust Estimator (RE

Increasing pressures on land resources requires increased land use efficiency.Over 900 million ha of sandy soils throughout the world are extensively used for agricultural crop production, most requiring nutrient inputs.Although use of humic substances together with inorganic fertilizer as soil amendments has been introduced, their synergistic effe

SARS-CoV-2 has spread very quickly from its first reported case on 19 January 2020 in the United Stated of America, leading WHO to declare pandemic by 11 Polish March 2020.RNA viruses accumulate mutations following replication and passage in human population, which prompted us to determine the rate and the regions (hotspots) of the viral genome wit