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Mostrando ítems 1-10 de 1988
Physico-chemical analysis and protein fraction compositions of different quinoa cultivars
(Akadémiai Kiadó, 2018-09)
Proximate composition and physical parameters in nine quinoa cultivars were determined in order to establish differences among them and to contribute to their characterization. Faro, Pichaman, and Baer varieties cultivars ...
Quality and Quantity of Organic Fractions as Affected by Soil Depth in an Argiudoll under Till and No-till Systems
(Sciencedomain International, 2016-01)
Aims: The aim of this study was to evaluate the long-term effect of tillage systems on the quantity and quality of organic carbon fractions at different soil layers.
Study Design: The experimental design was a split plot ...
Mössbauer spectroscopic study of the early crystallization stage of iron(III) hydroxide particles
(1986-12-01)
Mössbauer spectroscopy was used to investigate the early aging stage of iron(III) hydroxide sols prepared by oxidation of Fe(CO)5 in ethanolic solution, followed by vacuum drying at room temperature. One sample was composed ...
Improved pretreatments applied to the sugarcane bagasse and release of lignin and hemicellulose from the cellulose-enriched fractions by sulfuric acid hydrolysis
(2014)
BACKGROUND A number of pretreatments have been reported in the literature aiming to improve yields with increases in degree of digestibility of the cellulose-enriched fractions, in reducing the process time recalcitrance ...
Substâncias húmicas em solos de diferentes feições geomorfológicas no rebordo do planalto do Rio Grande do Sul
(Universidade Federal de Santa MariaBRAgronomiaUFSMPrograma de Pós-Graduação em Ciência do Solo, 2008-12-16)
In spite of the great importance of the soil organic matter for the sustainability of the
natural systems and of agricultural production, its study remains incipient in the area
of the Edge of the Rio Grande do Sul Plateau, ...
A Rapid Chemical Method for Estimating Potentially Mineralizable and Particulate Organic Nitrogen in Mollisols
(Taylor & Francis, 2017-01)
The objective of this study was to obtain an indicator of labile nitrogen (N) through a cost- and time-saving procedure by evaluating the relationships among potentially mineralizable N (N0), particulate organic matter N ...
Feasibility of quality process control of a naphtha fractioning unit based on near-infrared spectroscopic prediction of physical and chemical properties of medium naphtha streams
(2007)
Near-infrared spectroscopy multivariate calibration models were used to predict physical and chemical properties of medium naphtha samples providing the means of appropriate process control of naphtha fractioning units. ...