Fine structure of the spermatozoon of the Acestrorhynchus falcatus Bloch (Teleostei, Characidae) of the northern region of Brazil.

It is distinguished from all species of this subgenus by the pigmentation of the dorsal fin with a large black blotch extending from near the dorsal-fin base distally for

Melt No.. It allowed for the assessment of the influence of aluminium added in the quantity falling into the concerned range on both the graphitization of cast iron

Performed tests have shown that application of phosphorus in form of CuP10 and AlSr10 master alloy as an inoculant gives positive results in form of refinement of primary crystals

Because of the increas- ing the speed of the decomposition of the anhydrite, together with the growth of the temperature of casting the bronze to the plaster mould, the gases

Power demand of the mixer’s drive reveals the mixer’s operating characteristics and reliable monitoring of the mixing processes involving the evaluation of power consumption

At the first stage of the measurements results analysis, the gear wheel cast surface image was compared with the casting mould 3D-CAD model (fig.. Next, the measurements results

The structure of the remelting zone of the steel C90 steel be- fore conventional tempering consitute cells, dendritic cells, sur- rounded with the cementite, inside of

social assistance. The protection of jobs within some enterprises, cooperatives, forms of economical associations, constitute an efficient social policy, totally different from