During the Phanerozoic, the diversity of immobile suspension feeders living on the surface of soft substrata (ISOSS) declined significantly. Immobile taxa on hard surfaces and mobile taxa diversified. Extinction rates of ISOSS were significantly greater than in other benthos. These changes in the structure of benthic communities are attributed to increased biological disturbance of the sediment...

Improvement of the work efficiency is demanded by aging and reducing of the working population in the construction field, so that some automation technologies are applied to construction equipment, such as bulldozers and excavators. However, not only the automation technologies but also expert skills are necessary to improve the work efficiency. In this paper, the human skill evaluation is prop...

The article presents the scope, purpose and design of bulldozer. main brands bulldozers used in our republic are given. Their characteristics considered, such as: weight, power, blade width height. As a result analysis parametric information, standard deviation, average value, coefficient variation, asymmetry kurtosis were determined. A correlation matrix has been compiled that describes relati...

The paper approaches the theoretical and experimental analysis of level exhaust gas pollution in a protected nature environmental, located mountain area, for excavation trench. Due to legislative provisions prohibiting use explosives reservation or other environmental areas, mechanized solution remains only viable option. Excavation trench through must be carried out, taking into account maximu...

Localized interface shear strength failures have occurred during placement and spreading of cover soils on top geosynthetic layers slopes using construction equipment, typically bulldozers (‘dozers’). The mechanisms these types are rarely considered evaluated in design reports calculations. present paper intends to improve upon the analyses presented previous literature references by providing ...