Buscar
Mostrando ítems 21-30 de 1350
Delayed quadratic buck converter
(Institution of Engineering and Technology, 2019)
Triangular Current Mode for High Step Ratio Modular Multilevel DC-DC Converter
(IEEE, 2018)
DC networks have generated much interest in recent years, from transmission in high voltage to their use in distribution systems. One of the major challenges is to replace the high efficient and reliable ac transformer, ...
High speed signal wavelength conversion using stimulated Raman effect in ultrasmall silicon-on-insulator optical waveguides
(Iop Publishing LtdBristolInglaterra, 2008)
Hydrothermal treatments applied to agro- and forest- industrial waste to produce high added-value compounds
(North Carolina State University. Department of Wood and Paper Science, 2017-01-01)
Agro- and forest-industrial wastes are abundant and low cost sources of carbohydrates and phenolic compounds, which can be converted into biofuels, biomaterials, and high added-value compounds by different pathways in small ...
Hydrothermal treatments applied to agro- and forest-industrial waste to produce high added-value compounds
(North Carolina State University. Department of Wood and Paper Science, 2017-01)
Agro- and forest-industrial wastes are abundant and low cost sources of carbohydrates and phenolic compounds, which can be converted into biofuels, biomaterials, and high added-value compounds by different pathways in small ...
Corrigendum to ‘‘Alumino-mesostructured Ni catalysts for the direct conversion of ethene to propene” [J. Catal. 305 (2013) 154–168]
(Elsevier, 2016)
Ni/MCM-41 and Ni/AlMCM-41 were synthesized at different Si/Al ratios and tested in the direct conversion of ethene to propene (ETP-reaction). It was intended to evaluate the effect of modifying the catalyst acidity on the ...
Alumino-mesostructured Ni catalysts for the direct conversion of ethene to propene
(Elsevier, 2013-05-07)
Ni/MCM-41 and Ni/AlMCM-41 were synthesized at different Si/Al ratios and tested in the direct conversion
of ethene to propene (ETP-reaction). It was intended to evaluate the effect of modifying the catalyst
acidity on ...
Catalytic conversion of natural gas with added ethane and LPG over Zn-ZSM-11
(Elsevier Science, 2000-01)
The higher hydrocarbons (C2+) from natural gas (NG), such as ethane (C2), propane (C3) and butane (C4) reached excellent levels of conversion over Zn-ZSM-11 at temperatures between 550?640C and 1 atm total pressure, but ...
Selective synthesis of acetaldehyde from lactic acid on acid zeolites
(Elsevier Science, 2018-03)
The gas-phase lactic acid conversion to acetaldehyde was studied on zeolites HMCM22, HZSM5 and NaZSM5 in a plug-flow fixed-bed reactor at 583. K. HMCM22 was a strong Brønsted acid zeolite that yielded 39.7% of lactic acid ...
Efeito da razão carbono:nitrogênio no cultivo heterotrófico de cianobactérias unicelulares e filamentosas em vinhaça de cana-de-açúcar
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Agricultura e Ambiente - PPGAA-ArCâmpus Araras, 2016-03-31)
Several researches suggests heterotrophic metabolism in some strains of cyanobacteria, allowing its application in the development and consumption of organic molecules and nutrients in wastewater. Vinasse is the main ...