Repositorio IPICyT: Envíos recientes
Mostrando ítems 281-300 de 2345
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Síntesis de catalizadores NiMoW y su evaluación catalítica en la reacción de hidrodesulfuración del dibenzotiofeno
(2020-09-24)"En la presente tesis, varios catalizadores soportados de NiMoW se sintetizaron y probaron en la reacción de hidrodesulfuración (HDS) del dibenzotiofeno (DBT). Se evaluó la influencia del bromuro de cetil-trimetil amonio ... -
Modificación de poliolefinas con poliésteres alifáticos para obtener compositos para aplicaciones biomédicas
(2022-03-21)"Compositos poliméricos a base de polietilenos, como el polietileno de alta densidad (HDPE) y el polietileno de ultra alto peso molecular (UHMWPE) y policaprolactona (PCL) con un relleno cerámico de bioglass (BG) e ... -
Wastewater Contaminated with Hydrazine as Scavenger Agent for Hydrogen Production by Cu/Ti Nanostructures
(MDPI, 2021)"Cu/Ti photocatalysts were prepared by the sol-gel process with different copper loadings (1.0, 2.5, and 5.0 wt.%) and then thermally treated at several calcination temperatures from 400 to 600 °C. The materials were ... -
Densidad de semillas y plántulas de Zanthoxylum fagara en México y Zanthoxylum coco en Argentina: influencia de plantas bajo las cuales ocurren y borde de la vegetación
(Sociedad Botánica de México, 2021)"Antecedentes: La distribución de plantas depende de dispersores que transportan semillas a hábitats adecuados y de plantas que faciliten o inhiban germinación y establecimiento. Es importante conocer cómo estos factores ... -
Correlation among vegetative and reproductive variables in wheat under a climate change simulation
(Instituto Agronômico de Campinas, 2021)"Based on climate change scenarios predicted for northwestern Mexico, an experiment was carried out during the 2016- 2017 and 2017-2018 crop cycles, under field conditions in wheat, in the Yaqui Valley, Sonora, Mexico. The ... -
El desarrollo de la Física en San Luis Potosí Parte 2: de la fundación de la Escuela e Instituto de Física a la actualidad
(Sociedad Mexicana de Física, 2020) -
New World Cactaceae Plants Harbor Diverse Geminiviruses
(MDPI, 2021)"The family Cactaceae comprises a diverse group of typically succulent plants that are native to the American continent but have been introduced to nearly all other continents, predominantly for ornamental purposes. Despite ... -
Identification of the Begomoviruses Squash Leaf Curl Virus and Watermelon Chlorotic Stunt Virus in Various Plant Samples in North America
(MDPI, 2021)"Geminiviruses are a group of plant-infecting viruses with single-stranded DNA genomes. Within this family, viruses in the genus Begomovirus are known to have a worldwide distribution causing a range of severe diseases in ... -
Identification of the Dominant Factors in Groundwater Recharge Process, Using Multivariate Statistical Approaches in a Semi-Arid Region
(MDPI, 2021)"Identifying contributing factors of potential recharge zones is essential for sustainable groundwater resources management in arid regions. In this study, a data matrix with 66 observations of climatic, hydrogeological, ... -
Molecular ruler mechanism and interfacial catalysis of the integral membrane acyltransferase PatA
(AAAS, 2021)"Glycolipids are prominent components of bacterial membranes that play critical roles not only in maintaining the structural integrity of the cell but also in modulating host-pathogen interactions. PatA is an essential ... -
First-principles study of Mn3adsorbed on Au(111) and Cu(111) surfaces
(Royal Society of Chemistry, 2021)"A theoretical study of the Mn trimer adsorbed on the noble metal surfaces Au(111) and Cu(111) is reported. The calculations were performed using first-principles methods within the density functional theory and the ... -
Nitrogen–phosphorus doped graphitic nano onion-like structures: experimental and theoretical studies
(Royal Society of Chemistry, 2021)"Onion-like graphitic structures are of great importance in different fields. Pentagons, heptagons, and octagons are essential features of onion-like graphitic structures that could generate important properties for diverse ... -
Control of the asymmetric growth of nanowire arrays with gradient profiles
(Royal Society of Chemistry, 2021)"A novel electrochemical methodology for the growth of arrays of Ni and Co nanowires (NWs) with linear and non-linear varying micro-height gradient profiles (?HGPs), has been developed. The growth mechanism of these ... -
Effect of silicon dots into coconut fibers on the nucleating capacity of β-crystals of polypropylene
(Universidad Autónoma Metropolitana, 2021)"Three concentrations of sodium hydroxide (3, 5, and 7% based on a composition by weight) and 2 reaction times (1 and 4 h) were used to treat coconut fiber. According to the results, the inclusion of treated fiber in polymer ... -
El desarrollo de la Física en San Luis Potosí Parte I: de la época colonial a la institucionalización de la física
(Sociedad Mexicana de Física, 2020) -
Agave salmiana syrup improves the production of recombinant human interleukin-2 in Escherichia coli
(Universidad Autónoma Metropolitana, 2021)"The expression of heterologous proteins in Escherichia coli is strongly affected by the type of carbon source used. In this work, the expression of a synthetic codon-optimized gene of human interleukin-2 in E. coli BL21-SI, ... -
Magnetic properties of fe1 / crn nanoinclusions in fe
(Sociedad Mexicana de Física, A. C., 2002)"The magnetic properties of Fe1/CrN inclusions in a Fe matrix are calculated as a function of the Cr number of atoms N at zero temperature, and for N ? 168. The electronic structure is determined by using a realistic ... -
Magnetic properties of Fe nanoclusters: ab initio calculations of FeN N = 9,15, 27, 51, and 59
(Sociedad Mexicana de Física, A. C., 2006)"The magnetic properties of iron clusters (FeN, N = 9, 15, 27, 51, and 59 atoms) at T = 0 K with bcc–like structure and bulk parameters are studied using ab initio methods. In these studies we consider the spin–orbit ... -
Factorization method for some inhomogeneous Lienard equations
(Sociedad Mexicana de Física, A. C., 2021)"The factorization of inhomogeneous Li\'enard equations is performed showing that through the factorization conditions involved in the method one can obtain forcing terms for which closed-form solutions exist. Because of ... -
Insights into Equilibrium and Adsorption Rate of Phenol on Activated Carbon Pellets Derived from Cigarette Butts
(MDPI, 2021)"In the present work, the preparation of activated carbon pellets from cigarette butts by thermal treatment was evaluated. The morphological, textural, topological, and surface chemical properties were studied by SEM-EDX, ...