Results 21 to 30 of about 11,029 (117)
International Journal of Chemical Engineering, Volume 2019, Issue 1, 2019., 2019 Differences in morphology, pH, and electric charge of chitosan (CS) based hydrogels prepared by complexation with carboxymethylcellulose (CMC), carboxymethylated starch (CMS), and alginic acid (AA) at different polymers ratios and changing the order of addition were studied.
Elizabeth Henao Mejía +4 more
wiley +1 more source
De madera : experimentación con celulosa [PDF]
, 2021 En este trabajo de tesis se plantea la utilización de materiales textiles más amigables con el medio y promueve el Lyocell como alternativa de menor impacto, el cual está fabricado a partir de la celulosa de eucalipto proveniente de plantaciones ...
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Revista Mexicana de Ciencias Forestales, 2018 Dada su riqueza forestal, México cuenta con numerosas especies silvestres del género Physalis (Solanaceae) que poseen potencial para su aprovechamiento, desde el punto de vista fitoquímico; además tiene importantes propiedades medicinales.
Eduardo Salcedo-Pérez +5 more
doaj +1 more source
International Journal of Chemical Engineering, Volume 2018, Issue 1, 2018., 2018 The preparation of gels by charge interaction methods has been extensively studied, but it is not yet clear how these methods influence gel characteristics. The objective of this work was to study differences in morphology and surface charge of hydrogels prepared by ionotropic gelation, polyelectrolyte complexation, and a combination of both methods ...
Elizabeth Henao +4 more
wiley +1 more source
Revista Mexicana de Ciencias Forestales, 2017 Se evaluaron tres especies de pino: Pinus douglasiana, Pinus devoniana y Pinus oocarpa, de una parcela ubicada en el bosque La primavera, Jalisco. Después de realizar las mediciones dasométricas y establecer el balance de biomasa (madera, ramas, corteza ...
Teófilo Escoto García +6 more
doaj +1 more source
Revista Peruana de Medicina Experimental y Salud Pública, 2022 Objetivo. Desarrollar y evaluar un método de bajo costo basado en celulosa para la purificación rápida y amplificación directa de ADN de Bordetella pertussis de hisopados nasofaríngeos. Materiales y métodos.
Eduardo Juscamayta-López +4 more
doaj +1 more source
NIRS Characterization of Paper Pulps to Predict Kappa Number
Journal of Spectroscopy, Volume 2015, Issue 1, 2015., 2015 Rice is one of the most abundant food crops in the world and its straw stands as an important source of fibres both from an economic and an environmental point of view. Pulp characterization is of special relevance in works involving alternative raw materials, since pulp properties are closely linked to the quality of the final product.
Ana Moral +4 more
wiley +1 more source
Cationization of Alpha‐Cellulose to Develop New Sustainable Products
International Journal of Polymer Science, Volume 2015, Issue 1, 2015., 2015 Papermaking has been using high quantities of retention agents, mainly cationic substances and organic compounds such as polyamines. The addition of these agents is related to economic and environmental issues, increasing contamination of the effluents.
Ana Moral +4 more
wiley +1 more source
Modelling of the Simultaneous Saccharification and Fermentation for a Pine Sawdust Biorefinery
Fermentation, 2022 The decline in world oil reserves evidences the need to diversify the sources of equivalent raw materials. The use of biomass is one of the most explored alternatives.
Carolina Mónica Mendieta +3 more
doaj +1 more source
International Journal of Polymer Science, Volume 2015, Issue 1, 2015., 2015 The effect of carbon source, carbon to nitrogen (C/N) ratio, and limitation in nutrients (N, P, K, Ca, Mg, and Fe) on extracellular polymeric substances (EPS) synthesis by the marine bacterium Saccharophagus degradans was studied. This strain was able to grow in mineral medium and produce EPS with different efficiency according to the C source used (g ...
Yolanda González-García +6 more
wiley +1 more source