Results 31 to 40 of about 4,585 (121)

PREDICCIÓN DE PROPIEDADES FISICOQUÍMICAS DE GASOLINAS MEDIANTE CROMATOGRAFÍA GASEOSA Y MÉTODOS DE REGRESIÓN MULTIVARIADOS

open access: yesAvances en Ciencias e Ingeniería, 2019
En este trabajo se desarrolla un procedimiento alternativo para la estimación del número de octano experimental y de las temperaturas de destilación atmosférica en gasolinas mediante la aplicación de métodos de regresión multivariados a partir de datos ...
Reinaldo Fernández   +4 more
doaj  

Effect of Cell Disruption and Protein Extraction on the Structural and Technological Properties of Tetradesmus obliquus Protein‐Rich Extracts

open access: yesSustainable Food Proteins, Volume 4, Issue 2, June 2026.
Despite its considerable potential as a functional food ingredient, T. obliquus faces a major limitation in protein recovery due to the rigidity of its cell wall. In the microalgae industry, protein extraction typically involves two main steps: cell disruption and protein extraction.
César Augusto Sodré da Silva   +6 more
wiley   +1 more source

Característica físico-química de los gases acompañantes y crudos de la formación veloz superior e inferior en el yacimiento puerto escondido

open access: yesRevista CENIC Ciencias Químicas, 2015
Algunos estudios realizados sobre el origen del petróleo a muestras en laboratorios internacionales mediante cromatografía gaseosa-espectrometría de masa (CG-EM) muestran que dichos crudos se originaron en roca madre de naturaleza carbonatada.
Roberto Ayllón-Torres   +3 more
doaj  

The Electrochemical Impedance Spectroscopy as a Diagnostic Tool of the Transformer Oil

open access: yesRevista Cubana de Ingeniería, 2014
The quality of the transformer oil is essential to ensure its right performance in electrical appliances such as transformers and switches, in which oil works as insulating. The necessity toguarantee such condition can be affected due to the law level of
Alexander Cueli Corugedo   +2 more
doaj   +1 more source

High Resistance and Biofilm Tolerance to Antimicrobials of Marine Bacteria From Brazilian Deep‐Sea Sediment

open access: yesEnvironmental Microbiology Reports, Volume 18, Issue 3, June 2026.
Antimicrobial resistance and biofilm‐specific tolerance of cultivable Pseudomonas, Bacillus, Brevibacillus and Paenibacillus isolated from deep‐sea sediments of a methane‐seep area off the Southern Brazilian coast. These findings underscore the role of deep‐sea environments as potential reservoirs for antimicrobial‐resistant bacteria (ARB) and ...
Amanda Simão Dias   +2 more
wiley   +1 more source

EVALUACIÓN ELECTROQUÍMICA Y GRAVIMÉTRICA DE UN INHIBIDOR PARA LA ESTIMULACIÓN ÁCIDA DE POZOS

open access: yesAvances en Ciencias e Ingeniería, 2019
En este trabajo se evalúa el comportamiento electroquímico y gravimétrico de un inhibidor de corrosión para la estimulación ácida a pozos de petróleo.
Yosmari Adames   +5 more
doaj  

Exiled From Their Own Lands: Indigenist Policies, Oil, and Colonial Plunder in 20th Century Venezuela

open access: yesThe Journal of Latin American and Caribbean Anthropology, Volume 31, Issue 2, June 2026.
ABSTRACT This article examines the historical displacement of Indigenous peoples in Venezuela, focusing on the links between indigenist policies and the exploitation of natural resources, particularly oil, throughout the 20th century. Using a combined historical and ethnographic approach, it demonstrates how the formation of the Venezuelan nation‐state
Gabriel Tardelli
wiley   +1 more source

Political Cycles, Electricity Policy, and Mexico's Economy

open access: yesLatin American Policy, Volume 17, Issue 2, June 2026.
ABSTRACT Electricity reform in Mexico should stimulate economic growth, improve energy efficiency, and reduce greenhouse gas emissions. This article evaluates the successes and failures of reform and draws lessons across political cycles by analyzing changes in political dynamics—often tied to policy reversals—and the legal framework during the pro ...
David Bonilla
wiley   +1 more source

Comportamiento electroquímico de inhibidor de corrosión utilizado en sistema de tope de columna de destilación atmosférica

open access: yesRevista CENIC Ciencias Químicas, 2022
El presente trabajo evaluó por métodos electroquímicos el desempeño electroquímico actual de un inhibidor de corrosión comercial, utilizado en el tope de la columna de destilación atmosférica.
Nelson Felipe LLovet de Armas   +2 more
doaj  

Unusual occurrence of Cochlichnus in aeolian sandstones: evidence for a stiletto fly larval origin

open access: yesPapers in Palaeontology, Volume 12, Issue 3, May/June 2026.
Abstract Cochlichnus anguineus is an ichnotaxon recognized for its distinctive regular wavy morphology. It is a characteristic trace fossil typically associated with aquatic and marginal aquatic environments. However, in this study we examine its unusual occurrence in the aeolian sandstones of the Botucatu Formation (Lower Cretaceous, Paraná Basin ...
Bernardo de C. P. e M. Peixoto   +8 more
wiley   +1 more source

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