Results 11 to 20 of about 155,615 (245)

Development of Cellulose Acetate Microcapsules with Cyanex 923 for Phenol Removal from Aqueous Media

open access: yesJournal of Chemistry, 2018
Microcapsules of cellulose acetate with Cyanex 923 were prepared and used in this study for phenol removal from water and synthetic textile wastewater.
Irma Pérez-Silva   +4 more
doaj   +1 more source

Mineral Phosphate Solubilization in Burkholderia tropica Involves an Inducible PQQ-Glucose Dehydrogenase [PDF]

open access: yes, 2016
Aims: The objective of this work was to provide knowledgement about the mechanism and regulation of the mineral phosphate solubilization in Burkholderia. tropica. To this end, the expression of the direct extracellular oxidative pathway in B. tropica was
Bernabeu, Pamela Romina   +6 more
core   +2 more sources

ESTUDO DE SÍNTESE E TRANSIÇÃO ENTRE AS FASES ZEOLÍTICAS SODALITA E CANCRINITA

open access: yesHolos, 2014
Para a síntese hidrotermal das zeólitas foi utilizado como fonte de alumínio e de silício o caulim da região Borborema-Seridó (RN/PB) in natura e tratado termicamente a 500, 700 e 900 °C por 2 horas.
Fernanda Arruda Nogueira Gomes Silva   +6 more
doaj   +1 more source

A computational study of the potential bioactivity of hibiscus and garcinia acids against SARS-CoV-2 [PDF]

open access: yesJournal of the Serbian Chemical Society
A computational chemical study was conducted on the diastereoisomers of hibiscus acid (HA) and garcinia acid (GA), investigating their docking capabilities with the main protease (6LU7) of SARS-CoV-2.
López-Orozco Wendolyne   +3 more
doaj   +1 more source

Chemical composition of gahnite and degree of pegmatitic fractionation in the Borborema Pegmatitic Province, northeastern Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2007
Gahnite electron probe microanalyses from three pegmatites (Mirador, Capoeira and Quintos) of the Borborema Pegmatitic Province in northeastern Brazil allowed to determine molar compositions ranging from 86.22 to 95.41 mol% gahnite (ZnAl2O4), 1.51 to 6 ...
Dwight R. Soares   +3 more
doaj   +1 more source

Effect of pH and nanoclay content on the morphology and physicochemicalproperties of soy protein/montmorillonite nanocomposite obtained byextrusion [PDF]

open access: yes, 2018
The present work attempts to clarify the influence of montmorillonite nanoclay content and pH on the me-chanical properties of extruded soy protein nanocomposites.
Félix Ángel, Manuel   +4 more
core   +1 more source

Recent Advances in the Use of Transition-Metal Porphyrin and Phthalocyanine Complexes as Electro-Catalyst Materials on Modified Electrodes for Electroanalytical Sensing Applications

open access: yesSolids, 2021
Metalloporphyrins (MP) and metallophtalocyanines (MPc) are innovative materials with catalytic properties that have attracted attention for their application for diverse electrochemical purposes. The presence of metallic centers in their structure offers
J. Antonio Cruz-Navarro   +6 more
doaj   +1 more source

Intra-regional classification of grape seeds produced in Mendoza province (Argentina) by multi-elemental analysis and chemometrics tools [PDF]

open access: yes, 2018
The feasibility of the application of chemometric techniques associated with multi-element analysis for the classification of grape seeds according to their provenance vineyard soil was investigated.
Canizo, Brenda Vanina   +4 more
core   +1 more source

Hydrophilic hypercrosslinked polymeric sorbents for the solid-phase extraction of polar contaminants from water [PDF]

open access: yes, 2010
Three new hypercrosslinked polymers with hydrophilic character arising from hydroxyl moieties in their skeletons have been prepared in microsphere format and applied to the off-line solid-phase extraction (SPE) of polar compounds from water samples.
Borrull, F.   +5 more
core   +1 more source

BIOTECNOLOGÍA APLICADA A LA DEGRADACIÓN DE COLORANTES DE LA INDUSTRIA TEXTIL

open access: yesEcosistemas y Recursos Agropecuarios, 2014
La presencia de colorantes en las aguas residuales representa un problema ambiental, ya que este tipo de compuestos no puede eliminarse con los métodos de tratamiento convencionales.
A Cortazar-Martínez   +5 more
doaj   +1 more source

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