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Now showing items 11-20 of 49
Lignocellulosics as sustainable resources for production of bioplastics : a review
(Elsevier, 2017-09-20)
The bio-based economy requires a sustainable utilization of bioresources for production of a range of products, including pulp, paper, chemicals, biofuel and bioplastics. Currently, various types of bioplastics are produced ...
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 ...
Cytogenetic studies in the redtail catfish, Phractocephalus hemioliopterus (Bloch & Schneider, 1801) (Siluriformes, Pimelodidae) a giant fish from Amazon basin
(Pensoft, 2017-03-06)
The objective of this study was to cytogenetically analyze Phractocephalus hemioliopterus comparing the findings with other data to infer relationships among Pimelodidae species. The results revealed a diploid number of ...
The Adhesive Glands during Embryogenesis in Some Species of Phyllomedusinae (Anura: Hylidae)
(Society for the Study of Amphibians and Reptiles, 2017-01-12)
Entre las estructuras embrionarias de los anuros, las glándulas adhesivas (o de cemento) aparecen posterolaterales al estomodeo y producen una secreción mucosa que adhiere los embriones a las superficies dentro y fuera del ...
Los libros de texto recomendados a estudiantes universitarios para el estudio de ecuaciones diferenciales
(Sociedad Argentina de Educación Matemática, 2017-05-01)
Las investigaciones sobre enseñanza y aprendizaje de ecuaciones diferenciales (ED) subrayan su potencialidad para construir modelos matemáticos, indican que las prácticas educativas usuales se caracterizan por una ...
Los conceptos básicos involucrados en la ecuación de ondas armónicas mecánicas : su tratamiento en los libros de texto de física usados en el ciclo inicial universitarioThe basic concepts involved in the equation of mechanical harmonic waves : their treatment in Physics textbooks used in undergraduate courses
(Asociación de Profesores de Física de la Argentina, 2017-11-02)
En el ciclo inicial universitario se aborda el estudio de las ondas mecánicas transversales modelandolas matemáticamente a través de una función armónica de dos variables que involucra parámetros característicos cuya ...
Chemical composition and biological prospects of essential oils and extracts of aphyllocladus spartioides growing in northwest Argentina
(Wiley, 2017-03-29)
Aphyllocladus spartioides WEDD. is a native and aromatic herb used in traditional medicine, however it is still poorly investigated. In this work, the volatile profile of A. spartioides growing in Hornillos-Northwest ...
Production and characterization of TiO2 nanofilms for hemocompatible and photocatalytic applications
(Springer, 2017-08-10)
Titanium dioxide (TiO2) coatings are currently produced for hemocompatible and photocatalytic applications by using two techniques: sol–gel and anodic oxidation. In this review, the research advances on TiO2 nanofilms ...
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 ...
Key role of anionic trash catching system on the efficiency of lignocellulose nanofibers in industrial recycled slurries
(Springer, 2017-11-29)
The processing of recycled paper into packaging materials is becoming one of the most important activities of paper mills. However, the use of recycled paper as a raw material causes an important increase of dissolved ...