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Hemicellulose extraction from slash pine sawdust by steam explosion with sulfuric acid
(Elsevier, 2017-12-01)
One of the main obstacles to the development of advanced forest biorefineries is the optimal fractionation of the plant biomass. The aim of this work was to design a two-stage process for the fractionation of slash pine ...
Optimization of the soda-ethanol delignification stage for a rice husk biorefinery
(Elsevier, 2017-03-01)
The aim of this work was to optimize the delignification of the hemicelluloses-free fraction of rice husk to obtain fractions of lignin, cellulose, and inorganics, which could be valorized in the context of the rice husk ...
Advances on the synthesis of porous TiO2 coatings by anodic spark oxidation : photocatalytic reduction of Cr(VI)
(Elsevier, 2017-04-15)
Porous TiO2 coatings were obtained by anodic oxidation in spark discharge conditions, varying the range of current density (200–3000 A m−2) and the electrolyte concentration (H2SO4; 1 and 4 M). The samples were characterized ...
Electrochemical analysis of the ASTM F75 alloy at different pH values and temperatures
(Wiley, 2017-02-27)
The electrochemical behavior of ASTM F75 alloy was analyzed in a sodium chloride solution at pH values of 5, 7, and 9 and temperatures of 37 and 42 °C. The tests were performed in samples corresponding to two different ...
Lignocellulosic nanofibers from triticale straw : the influence of hemicelluloses and lignin in their production and properties
(Elsevier, 2017-05-01)
The present work aims to determine the influence of hemicellulose and lignin content in the production of lignocellulosic nanofibers (LCNF) from triticale straws. Triticale straws were digested and then gradually delignified, ...
Copper improves the production of laccase by Pleurotus sajor-caju with ability to grow on effluents of the citrus industry
(Universidad Nacional Autónoma de México. Centro Ciencias de la Atmósfera, 2020-03-01)
This research is aimed to evaluate the effect of copper on biomass growth, laccase activity and isoenzymes composition of Pleurotus sajor-caju, and its ability to grow on effluents of the citrus industry. The inhibitory ...
Genetic relationship among paspalum species of the subgenus anachyris : taxonomic and evolutionary implications
(Elsevier, 2014-10-01)
Paspalum is one of the most important genera of the Poaceae family due to its large number of species anddiversity. The subgenus Anachyris comprises six species mainly from South America grouped together bysharing rare ...
Morfo-anatomía foliar y caulinar de Passiflora caerulea L. (Passifloraceae)
(Universidad Nacional de Asunción. Facultad de Ciencias Exactas y Naturales. Departamento de Biología. Laboratorio de Análisis de Recursos Vegetales, 2016-12-01)
Se estudió la morfo-anatomía foliar y caulinar de P. caerulea con el objeto de identificar caracteres que permitan reconocer a la especie. El material vegetal fue colectado en el Distrito Félix Pérez Cardozo, Dpto. Guairá. ...
Los problemas resueltos en libros de texto del ciclo básico universitario relativos a circuitos RL en corriente continua
(Universidad Federal de Santa Catarina, 2015-11-23)
En este trabajo se describen y caracterizan los problemas resueltos, relativos al tema circuitos RL en corriente continua, presentes en doce libros de texto universitarios de uso habitual en la República Argentina. Los ...
Microsporogénesis de tres especies del subgénero Passiflora (Passiflora, Passifloraceae) de Paraguay
(Instituto de Botánica Darwinion, 2016-07-31)
El presente trabajo tuvo por objeto caracterizar cariológicamente las especies del género Passiflora L., subgénero Passiflora, del Distrito Félix Pérez Cardozo, Guairá, Paraguay. Por primera vez, se da a conocer el número ...