Results 21 to 30 of about 27,401 (156)

Catálisis en el Instituto Tecnológico de Celaya

open access: yesMundo Nano, 2017
En este trabajo se presenta de manera general la investigación que lleva a cabo el Grupo de Catálisis Heterogénea del Departamento de Ingeniería Química del Instituto Tecnológico de Celaya (ITC).
Juan C. Fierro-González
doaj   +1 more source

Development of transient Monte Carlo in a fissile system with β-delayed emission from individual precursors using modified open source code OpenMC(TD)

open access: yesNuclear Engineering and Technology, 2023
In deterministic and Monte Carlo transport codes, β-delayed emission is included using a group structure where all of the precursors are grouped together in 6 groups or families, but given the increase in computational power, nowadays there is no reason ...
J. Romero-Barrientos   +6 more
doaj   +1 more source

Biofilms in hoses utilized to divert colostrum and milk on dairy farms: A report exploring their potential role in herd health, milk quality, and public health

open access: yesFrontiers in Veterinary Science, 2022
Biofilms in milking equipment on dairy farms have been associated with failures in cleaning and sanitizing protocols. These biofilms on milking equipment can be a source of contamination for bulk tank milk and a concern for animal and public health, as ...
Alejandra A. Latorre   +7 more
doaj   +1 more source

Caracterización superficial de pigmentos sobre artefactos paleolíticos de la zona de los Montes Albanos (Roma, Italia) por microscopía óptica y espectroscopía raman [PDF]

open access: yes, 2016
Preliminary results of the characterization of red pigmentations on paleolithic artefacts from the southern area of Montes Albanos (Rome, Italy) are presented. The set of materials consists of three decorated rounded pebblestones and a cortical flint
Altamura, F.   +3 more
core   +1 more source

Estudio espectroscópico computacional de resonancia magnética nuclear del ibuprofeno y sus principales precursores químicos

open access: yesRevista Tecnológica, 2015
Se presenta un estudio espectroscópico computacional del ibuprofeno y sus precursores químicos isobutilbenceno y 4-isobutilacetofenona. En la investigación se utilizó el programa de modelamiento electrónico estructural GAUSSIAN 03.
Lorena Meneses
doaj   +4 more sources

Contributions of new MRI techniques to brain tumor diagnosis. University Hospital experience.

open access: yesAnales de la Facultad de Medicina, 2014
Magnetic resonance imaging (MRI) is the preferred imaging technique for central nervous system tumor analysis. A great variety of tumors can be found in the brain and establishing a definitive diagnosis is a difficult task that often requires a ...
Nicolás Sgarbi, Osmar Telis
doaj   +2 more sources

Steady State Free Precession NMR without Fourier Transform: Redefining the Capabilities of 19F NMR as a Discovery Tool

open access: yesAngewandte Chemie, Volume 137, Issue 15, April 7, 2025.
Steady state free precession (SSFP) – Complete Reduction to Amplitude Frequency Tables (CRAFT) not only improves sensitivity, resolution and number of signals detected by NMR but can also dramatically reduce experiment times. This powerful approach unlocks the potential of NMR as a discovery tool, enabling unprecedented detection of fluorinated ...
Jeremy R. Gauthier   +10 more
wiley   +2 more sources

Prueba comparativa de uniformidad de contenido en tabletas de teofilina (150 mg/tab) de dos casas farmacéuticas en Costa Rica

open access: yesTecnología en Marcha, 2014
Dada la importancia del medicamento denominado teofilina para su uso en pacientes con problemas de asma y su alto consumo en Costa Rica, se eligió el producto en tabletas de 150 mg de teofilina de una casa farmacéutica que lo produce y distribuye en ...
Esteban Pérez-López   +3 more
doaj   +1 more source

Optimization of the Extraction of Bioactive Compounds from Cabernet Sauvignon Grape Pomace from Querétaro, Mexico, Using MSPD

open access: yesSeparations, 2023
Red wine contains polyphenols which are extracted during the winemaking process. However, winemaking is not an extraction; therefore, the resulting byproducts still have a substantial polyphenol content.
Tellez-Robles Daniela   +6 more
doaj   +1 more source

Flower-like and nanorods ZnO deposited on rGO as efficient photocatalysts for removal of polychlorinated biphenyls (PCBs)

open access: yesNanocomposites, 2022
PCBs were used for several decades as coolants, lubricants in transformers, plasticizers, and dielectric fluids, being highly carcinogenic and representing a severe environmental problem in soil and water. Pure and modified TiO2 has been the most studied
Aura S. Merlano   +4 more
doaj   +1 more source

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