Ciencias Naturales y Exactas: Recent submissions
Now showing items 161-180 of 581
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Decolorization of Kraft liquor effluents and biochemical characterization of laccases from Phlebia brevispora BAFC 633
(Elsevier, 2015-10-01)In this work we evaluated the decolorization ability of fungus identified as Phlebia brevispora BAFC 633 on Kraft liquor effluents and we looked at the biochemical characterization of two novel laccases from the fungus. ... -
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 ... -
Second-generation bioethanol from industrial wood waste of South American species
(Green Wave Publishing of Canada, 2017-09-01)There is a global interest in replacing fossil fuels with renewable sources of energy. The present review evaluates the significance of South-American wood industrial wastes for bioethanol production. Four countries have ... -
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 ... -
Hypericum perforatum L
(Colegio de Farmacéuticos (Buenos Aires), 2015-09-01)Contiene: Descripción botánica; Descripción de la especie; Origen y localización; Composición química; Usos etnomedicinales; Posología; Reacciones adversas; Interacciones; Condiciones de venta; Bibliografía. -
Social networks and genetic algorithms to choose committees with independent members
(Elsevier, 2016-01-01)Choosing committees with independent members in social networks can be regarded as a group selection problem where independence, as the main selection criterion, can be measured by the social distance between group members. ... -
Influence of temperature and packaging type on quality parameters and antimicrobial properties during Yateí honey storage
(Sociedad Brasilera de Ciencia y Tecnología de Alimentos, 2017-12-21)Tetragonisca fiebrigi, is a bee of the subfamily Meliponidae traditionally known as Yateí. Its honey differs from the honey produced by Apis mellifera because it is less viscous, more acidic, has sweetness and particular ... -
Microbiological and physicochemical analysis of yateí (Tetragonisca angustula) honey for assessing quality standards and commercialization
(Asociación Argentina de Microbiología, 2014-10-01)Debido al interés en la producción y comercialización de la miel de yateí (Tetragonisca angustula) en la provincia de Misiones, Argentina, en este trabajo se evaluaron parámetros microbiológicos y fisicoquímicos con el fin ... -
Genetic algorithm applied to parameter estimation of bacterial growth modeling
(Elsevier, 2016-11-14)Predictive microbiology is nowadays one of the main tools to understand microbial interactions and to assess the quantitative risk in foods. Several models have been developed in order to predict microorganism growth. The ... -
Comparison among growth model of interacting microorganism : a lactic acid bacteria and Listeria monocytogenes
(Elsevier, 2017-10-30)Predictive food microbiology is normally based on mathematical models to predict the growth, inactivation or probability of microorganism growth which can be applied to establish the shelf-life of food. At present the ... -
Internet de las cosas en entornos académicos : caso de éxito en la Universidad de Misiones
(Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Electrónica, 2017-07-24)Actualmente, los equipos y artefactos destinados a la iluminación, ventilación y acondicionamiento del aire, en los ambientes de la Universidad de Misiones, se controlan de forma completamente manual. Se ha comprobado que ... -
Vigilancia de la sensibilidad a penicilina en Streptococcus agalactiae recuperados de embarazadas entre las 35-37 semanas de gestación
(Universidad Nacional de Córdoba. Facultad de Ciencias Médicas, 2017-12-08)Streptococcus agalactiae (SGB) es causa de infecciones severas en menores de tres meses. Meningitis, neumonía y sepsis son los principales cuadros en estos niños. Estas infecciones se encuentran entre las más graves que ... -
Avances en el desarrollo de un sistema de recuperación de información para publicaciones científicas del Área de Ciencias de la Computación
(Universidad Nacional de Lanús. Grupo de Investigación en Sistemas de Información, 2015-02-26)Para el investigador, la búsqueda de información en la web se ha convertido en una actividad básica en los últimos años. Esto se debe a la gran cantidad de material disponible, situación que conlleva complejidad a la hora ... -
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 ... -
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 ... -
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, ... -
Aproximación del comportamiento de ladrillos cerámicos huecos mediante métodos numéricos
(Asociación Argentina de Mecánica Computacional, 2017-11-10)En la provincia de Misiones, Argentina, se destaca el uso frecuente de mampuestos conocidos como Ladrillos Cerámicos Huecos (LCH), los cuales son de fabricación industrial, moldeados con máquinas extrusoras, cocidos en ... -
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 ... -
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 ...