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150  Articles
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Polyethylene (PE) is indispensable materials in daily lives. The catalyst is necessary to produce PE. Ziegler-Natta catalysts were mostly used to produce PE which consisted of MgCl2/TiCl4 system. Polyethylene particle was reported to replicate the shape o... see more

The injection of anhydrous ammonia (A-NH3) into bagged silage would allow variable applications of N to improve crude protein content of feeds. Trials evaluated the effectiveness of A-NH3 injection into silage for changes in nutrient characteristics and t... see more

Particle size is a critical quality parameter of food suspensions, influencing their rheological behaviour, overall stability as well as sensory perception. Sunflower paste was considered an example for a complex food matrix, based on its heterogeneous ch... see more

The tribological properties of a-zirconium phosphate particles as an additive in anhydrous calcium grease were studied by using an Optimol SRV-V oscillating reciprocating tester and a four-ball tester. Fortunately, a-Zr(HPO4)·H2O (a-ZrP) grease exhibits e... see more

PVA/Na-CMC hydrogels were prepared from polyvinyl alcohol (PVA) and Na-CMC isolated from OPEFB. Maleic anhydrous (MA) was introduced as a crosslinking agent during the formation of the hydrogel process. The characterization of the PVA/Na-CMC hydrogels was... see more

Synthesis of Zr-ZA catalyst used as catalyst for esterification reaction of glycerol with acetic acid anhydrous has been done. Catalysts are characterized using an infrared spectrophotometer, X-ray diffraction, and measurement of surface acidity, whi... see more

The aim of the present work was to examine the effects of anionic salts (MgCl2 or MgSO4) supplementation on metabolic profile, peripartum diseases and pregnancy rate of dairy cows during the prepartum period. Fourty five Holstein dairy cows were placed on... see more

In the present research work, a mathematical model is obtained for predicting specific fuel consumption in a 1.4-liter Otto cycle engine with electronic injection without making modifications, when using as fuel gasoline mixtures with concentrations in vo... see more

A percepção dolorosa, avaliada funcionalmente através do sistema analgésico endógeno, reflete a atividade do sistema nociceptivo, o qual depende do nível de excitabilidade do sistema nervoso, portanto, a procura de vias e formas que reduzam a excitabilida... see more

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