Results 1 to 10 of about 941 (127)

Rheological and Tribological Properties of Nanocellulose-Based Ecolubricants

Nanomaterials, 2021
Based on the response surface methodology, a rheological and tribological study carried out on eco-friendly lubricants is described. Such ecolubricants consisted of fibrillated or crystalline nanocellulose in vegetable oil (castor oil, high oleic ...
Samuel D. Fernández-Silva, Miguel A. Delgado, Claudia Roman, Moisés García-Morales   +3 more
doaj   +1 more source

Thermal and Rheological Properties of Hydrophobic Nanosilica in Sunflower Oil Suspensions at High Pressures

Nanomaterials, 2021
Nowadays, the reduction of the environmental impact associated with the operation of the oil industry is a primary concern. A growing trend is to develop low-toxicity formulations based on biodegradable components.
María J. Martín-Alfonso, Javier Pozo, Clara Delgado-Sánchez, Francisco José Martínez-Boza   +3 more
doaj   +1 more source

Fatigue performance evaluation of bitumen mastics reinforced with polyolefins through a dissipated energy approach

Materiales de Construccion, 2020
Polymers are known to improve the fatigue resistance of sphalt mastics. However, undesirable results can be obtained if the polymer is not successfully integrated into the bitumen binder. The goal of this work is to evaluate the effect of the addition of
C. Roman, M. A. Delgado, M. García-Morales   +2 more
doaj   +1 more source

Solid Lipid Nanoparticles (SLNs) with Potential as Cosmetic Hair Formulations Made from Otoba Wax and Ultrahigh Pressure Homogenization

Cosmetics, 2020
The development and physicochemical characterization of solid lipid nanoparticles (SLNs) with potential for formulating hair cosmetic products were carried out.
Sandra Rubiano, Juan D. Echeverri, Constain H. Salamanca   +2 more
doaj   +1 more source

Influence of the Nanoclay Concentration and Oil Viscosity on the Rheological and Tribological Properties of Nanoclay-Based Ecolubricants

Lubricants, 2021
This manuscript describes a rheological and tribological study carried out on eco-friendly lubricants. These ecolubricants were made up of nanoclays as dispersed phase (a layered nanosilicate (montmorillonite Cloisite 15A) and a fiber-like nanoclay ...
Samuel D. Fernández-Silva, Moisés García-Morales, Charlène Ruffel, Miguel A. Delgado   +3 more
doaj   +1 more source

Study of In Vitro and In Vivo Carbamazepine Release from Coarse and Nanometric Pharmaceutical Emulsions Obtained via Ultra-High-Pressure Homogenization

Pharmaceuticals, 2020
In the past decade, pharmaceutical nanotechnology has proven to be a promising alternative for improving the physicochemical and biopharmaceutical features for conventional pharmaceutical drug formulations.
Juan D. Echeverri, Maria J. Alhajj, Nicolle Montero, Cristhian J. Yarce, Alvaro Barrera-Ocampo, Constain H. Salamanca   +5 more
doaj   +1 more source

Lecithins from Vegetable, Land, and Marine Animal Sources and Their Potential Applications for Cosmetic, Food, and Pharmaceutical Sectors

Cosmetics, 2020
The aim of this work was to review the reported information about the phospholipid composition of lecithins derived from several natural sources (lipids of plant, animal, and marine origin) and describe their main applications for the cosmetic, food, and
Maria J. Alhajj, Nicolle Montero, Cristhian J. Yarce, Constain H. Salamanca   +3 more
doaj   +1 more source

Rabbit Ear Membranes as an Interesting Alternative for Permeability Tests in the Preformulation Stages of Cosmetic Products

Cosmetics, 2020
In the pre-formulation stages of cosmetic products, in vitro permeability tests correspond to an important alternative for making better decisions regarding the stability, performance and biocompatibility of these products. Moreover, these tests allow us
Estefania Benavides, Sara Manjarres, Constain H. Salamanca, Alvaro Barrera-Ocampo   +3 more
doaj   +1 more source

El rol de la función de transferencia de contraste en la formación de imágenes de resolución atómica de nanopartículas

Mundo Nano, 2020
Los resultados de microscopia electrónica de transmisión de alta resolución pueden ser cuantitativamente interpretados si se realizan los ajustes necesarios de la óptica-electrónica del instrumento para la adquisición de las imágenes de resolución ...
Carlos Angeles Chávez
doaj   +1 more source

Envenomation caused by the bite of the snake Bothriechis schlegelii. Report of two cases in Colombia

Case Reports, 2017
The bite by snakes of the Bothriechis genus is common in certain areas of Colombia such as the Coffee-growing Region. Due to their arboreal habits and defensiveness, these snakes usually bite farmers in their upper limbs and face.
Mario Galofre Ruiz
doaj   +1 more source