Buscar
Mostrando ítems 61-70 de 10813
Desidrogenação do etilbenzeno sobre compostos de ferro e alumínio
(2003)
Chromium and potassium-doped iron oxides are widely used as industrial catalysts in the dehydrogenation of ethylbenzene to produce styrene. They have several advantages but deactivate with time, because of the loss of ...
Effect of glomus etunicatum inoculation on aluminum, phosphorus, calcium, and magnesium uptake of two barley genotypes with different aluminum tolerance
(1998)
This study was conducted to evaluate the effect of vesicular-arbuscular mycorrhizal (VAM) fungus Glomus etunicatum on growth, absorption, and distribution of calcium (Ca), magnesium (Mg), phosphorus (P), and aluminum (Al) ...
Use of Chlorine to Remove Magnesium from Molten Aluminum
(JAPAN INST METALSSENDAI, 2012)
Removal of Mg from aluminum scraps, known as demagging, has been widely applied in the,aluminum industry. This work discusses bubble-formation theories and magnesium kinetic removal from aluminum scraps using chlorine and ...
Effectiveness of intraoral suction systems and aspirating tips for evacuation of aluminum oxide particles during use of air-abrasion
(2010-04-01)
Aim: The purpose of this study was to compare the effectiveness of a high-volume evacuation and a conventional intraoral suction system and aspirating tips for capturing aluminum oxide particles during use of an air-abrasion ...
Effectiveness of intraoral suction systems and aspirating tips for evacuation of aluminum oxide particles during use of air-abrasion
(2010-04-01)
Aim: The purpose of this study was to compare the effectiveness of a high-volume evacuation and a conventional intraoral suction system and aspirating tips for capturing aluminum oxide particles during use of an air-abrasion ...
Effects of macro and microstructure of aluminum alloy AA 6063-T6 with TIG-AC welding process with unbalanced rectangular wave
(2017-01-01)
The use of the rectangular wave in the TIG-CA welding process for aluminum alloys allows numerous possibilities of frequency control, wave amplitude variation and positive or negative current for the same wave cycle. The ...
One-Step Synthesis of Antibacterial Coatings by Plasma Electrolytic Oxidation of Aluminum
(2019-01-01)
Aluminum oxide films containing small quantities of silver are produced by plasma electrolytic oxidation of aluminum (97%) in different electrolytes aiming the synthesis of bactericidal coatings over aluminum for food ...
Influence of different levels of aluminum on the development of citrus rootstock Swingle Citrumelo (Citrus paradisi mcf. x Poncirus trifoliata raf.) in nutrient solution
(Inst Tecnologia Parana, 2000-01-01)
This work aimed at evaluating the influence of different levels of aluminum on the physiological parameters of the citrus rootstock Swingle Citrumelo in hydroponic solution. The experiment was carried out with a completely ...