A. Wesche. 1991. Biases associated with four stream substrate samplers. We compared samples collected from 10 substrates of various compositions with a single-probe freeze-core sampler, a triple-probe freeze-core sampler, a McNeil sampler, and a shovel. The accuracy with which these devices sampled particles larger than 50 mm in diameter varied; they were oversampled by the freeze-core devices,...

Nowadays, shovels play an important role in production of open pit mines and their failures result in significant production loss and considerable increase in maintenance costs. Therefore, reliability and risk analysis can help to improve production, productivity and reduce production costs. In this study, reliability of electric cable shovel of Chadormalu iron ore mine in Iran was investigated...

Fatty acid profile of deep-sea mud shrimp (Solenocera hextii) and shovel-nosed lobsters (Thenus unimaculatus) harvested from south-west coast (Arabian Sea) India were evaluated compared. Palmitic oleic acids the principle saturated fatty monounsaturated acids, respectively in lobster species. T. unimaculatus contained greater concentrations C20-22 n-3 polyunsaturated such as docosahexaenoic eic...