Artículo en revista de investigación: Envíos recientes
Mostrando ítems 921-940 de 1007
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Effect on Microstructure and Nanoindentation of a AlCoFeMoNi High Entropy Alloy
(2018-08-01)In this work, elemental powders supplied by Alfa Aesar with purity higher than 99.5% in weight Al, Co, Fe, Mo and Ni were initially weighed and mixed. The MA was performed in a high-energy ball mill (SPEX-8000M) for 10 h ... -
Chitosan–Starch–Keratin Composites: Improving Thermo-Mechanical and Degradation Properties Through Chemical Modification
(2018-05-01)Chitosan–starch polymers are reinforced with different keratin materials obtained from chicken feather. Keratin materials are treated with sodium hydroxide; the modified surfaces are rougher in comparison with untreated ... -
Synthesis of ag2s quantum dots and their biomedical applications
(2018-01-15)In the last years Quantum dots have been studied from various perspectives from basic science such as physics to nanotechnology and biotechnology with its possible applications in different areas such as sensors, biosensors, ... -
Analysis of mechanical and electrical imperfect contacts in piezoelectric composites
(2018-10-01)The problem of a heterogeneous piezoelectric composite with mechanical and electrical imperfect contact conditions is studied by means of the asymptotic homogenization method. As an illustrative example, in order to provide ... -
Ergo-environmental variables that affect the job satisfaction of the staff of two institutions of higher education
(2018-10-10)A research on ergonomics related to ergo-environmental factors and its impact on job satisfaction of academic staff of two Mexican universities is presented. A validated questionnaire with .94 reliability is applied in the ... -
Structural model to assess the relationship of manufacturing practices to delivery time in supply chains
(2018-12-10)he literature suggests that companies today evaluate the delivery time of their products/services to improve their performance in supply chains, which has great importance due to the global competition and trends in the ... -
A generalization of multiplication modules
(2019-01-31)We are extended definition of multiplication modules to M-multiplication modules when M is a sigma[M]-module. Then we are extended results to this class of modules, especially in case when M is a semiprime Goldie module. -
Diseño y construcción de una Aeronave para participar en aerodesign 2018
(2018-07-01)La formación integral para quien desea dedicarse a esta área considera, además del aprendizaje en las aulas, que los estudiantes participen en eventos de diversa índole, como las competencias internacionales. Éste es el ... -
Predictive model of burnout and labor satisfaction
(2018-10-10)The purpose of this study was to determine the relationship between burnout syndrome and job satisfaction in full-time professors of a Mexican university. The sample consisted of 230 randomly selected teachers, of whom 139 ... -
On Properties of Torsional Metric Spaces
(2018-08-09)We apply general tensor calculus to arbitrary nonrelativistic classical Lagrangian systems and derive general relationships between the torsion tensor and other quantities associated with the coordinate configuration space, ... -
Heuristic mechanism for drone swarm auto-organization
(2018-02-01)Current technology used for fires are: meteorological stations and satellite image and satellites. This last is a great option, but, from space, the fire detection is until it is large enough to be seen from orbital altitude. ... -
Effects of annealing on the magnetic properties and magnetocaloric effects of B doped Ni-Mn-In melt-spun ribbons
(2018-01-15)The magnetic, structural, thermal, and magnetocaloric properties of Ni50Mn35In14.5B0.5 melt-spun ribbons have been studied through X-ray diffraction (XRD), differential scanning calorimetry, and magnetization measurements. ... -
Learning Digital Communications through Software Defined Radio
(2018-07-15)Este artículo trata aspectos importantes del análisis de certidumbre de funcionalidad de comunicación entre un dron y un radiocontrol. En primera instancia se estima el máximo alcance para operar dentro del estándar de ... -
Using Regression Models for Predicting the Product Quality in a Tubing Extrusion Process
(2019-08-01)Quality in a manufacturing process implies that the performance characteristics of the product and the process itself are designed to meet specific objectives. Thus, accurate quality prediction plays a principal role in ... -
Multi-objective optimization of an engine mount design by means of memetic genetic programming and a local exploration approach
(2018-06)This work addresses the optimization of an engine mount design from a multi-objective scenario. Our methodology is divided into three phases: phase one focuses on data collection through computer simulations. The objectives ... -
Magnetostructural transitions and magnetocaloric effects in Ni50Mn35In14.25B0.75 Ribbons
(2018-01-12)The structural, thermal, and magnetic behaviors, as well as the martensitic phase transformation and related magnetocaloric response of Ni50Mn35In14.25B0.75 annealed ribbons have been investigated using room-temperature ... -
Magnetic and martensitic transformations of Ni48Co2Mn35In15 melt spun ribbons
(2018-08-30)As-solidified Ni48Co2Mn35In15 ribbons were prepared through the melt-spinning method, and their structural, magnetic, magnetocaloric properties, and martensitic transformations were investigated. The inverse martensitic ... -
Phase transition and magnetocaloric properties of Mn50Ni42-xCoxSn8 (0 < x < 10) melt-spun ribbons
(2018-01-01)The characteristics of magnetostructural coupling play a crucial role in the magnetic field-driven behaviour of magnetofunctional alloys. The availability of magnetostructural coupling over a broad temperature range is of ... -
Auto-regularized Gradients of Adaptive Interpolation for MRI Super-Resolution
(2018-10-10)In this paper, a method for adaptive pure interpolation (PI) of magnetic resonance imaging (MRI) in the frequency domain, with gradient auto-regularization, is proposed. The input image is transformed into the frequency ... -
Extreme binary black holes in a physical representation
(2018-10-31)Stationary axisymmetric binary systems of unequal co- and counter-rotating extreme Kerr black holes separated by a conical singularity are studied. Both solutions are identified as two three- parametric subfamilies of the ...