In order to increase a stiffness of cold-formed steel (CFS) elements it is practised to built-up the cross-section. In the analysed case, a main element is strengthened by adding extra chord in ...
IN the course of work on the hydrocarbon type analyses of wax distillate fractions obtained during assays of crude oils, a method 1 was devised for the separation of normal paraffins. It relies on the ...
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