This article aims to present results on research, recently developed, and related wear of equipment meet the challenges mining industry. Emphasis is done iron ore in Brazil due relevance sector for its economy tribology assets productivity. Results considerations cover (conveyor belts, pipelines) development high chromium cast (HCCI) microstructures face wear. Under wet erosive caused by pumped...

With the deepening of drilling depth, difficulty engineering increases gradually due to complex geological conditions. The traditional mechanical method shows problems high energy consumption, low efficiency, long cycle and cost. Because characteristics rock, abrasiveness rock causes great wear bit, which becomes an important factor affecting rate. High voltage electric pulse (Abbreviated as HV...

The geological context of this study is established in the iron oxide-copper-gold (IOCG) deposit Sossego (Canaã dos Carajás, Brazil), where hydrothermal alterations shear zones concentrated metals interest and added new characteristics to metavolcanic-sedimentary granite rocks. mineral transformation rocks by hypersaline fluids enriched silica also modifies some metallurgical properties, such a...

Abstract Carbon fibre reinforced polymeric material (CFRP) is increasingly being used to replace metallic materials, particularly in the automobile and aerospace industries. The mechanical properties of CFRP such as excellent weight strength ratio give beneficial outcome improving performance part made from CFRP. However, machining milling difficult challenging due abrasiveness Therefore, influ...

The production of colony-stimulating factors (CSF) is delicately controlled through a complex network of humoral and environmental factors. We have studied some of the mechanisms which regulate the production of CSF as compared to general protein synthesis in the lung tissue ill vitro. When lung tissue from mice was cultured for various times in serum free medium, the first detectable le...

Traditionally, thick enamel has often been used to infer durophagy (i.e., hard nut and seed consumption) in extinct hominins. These inferences are based on the hypothesis that thick enamel is primarily an adaptation to prevent tooth fracture or chipping resulting from high-stress loads produced during the mastication of large hard foods. An alternative view argues that thick enamel may aid in m...

The genus Metaschizotherium is a Miocene member of the Schizotheriinae (Chalicotheriidae, Perissodactyla) and appears in the MN 5 of Southern Germany with the species M. bavaricum. The Chalicotheriidae have mostly been reconstructed as browsers. In this study, the mesowear method is applied to 11 upper premolars and molars of M. bavaricum from the Upper Freshwater Molasse locality of Sandelzhau...