Artículo en revista de investigación: Envíos recientes
Mostrando ítems 721-740 de 823
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Airy pattern on narrow photoluminescence spectrum of band to band recombination in CdTe:Te thin films
(2018-02-01)Semiconductor CdTe:Te films were deposited by means of rf sputtering on glass substrates. The excess of Te gave place to a high number of Cd-vacancies (VCd) producing p-type CdTe films. The density of carriers produced a ... -
Starch Modified With Chitosan and Reinforced WithFeather Keratin Materials Produced by ExtrusionProcess: An Alternative to Starch Polymers
(2018-11-01)Starch (potato), chitosan, and feather keratin are used for processing biodegradable films produced by extrusion. The morphology of the films is examined with a scanning electron microscope and showed the excellent dispersion ... -
Thermoelectrical characterization and comparative analysis of three finite element models of a MEMS thermal sensor
(2018-06-15)This document presents the finite element modeling using ANSYS to obtain the thermal resistance of a MEMS thermal sensor. Additionally, the document describes a thermoelectrical characterization to find the sensor performance ... -
TiO2 obtenido por el proceso sol gel asistido con microondas
(2018-06-01)Reportamos el desarrollo del dióxido de titanio TiO2 empleando el método sol gel asistido con microondas, el proceso empleado reporta un tiempo de síntesis de 3.5 min y tiempo de envejecido de 24 horas. Se estudió el efecto ... -
Análisis del Maquinado por Electroerosión mediante regresión lineal
(2018-11-14)En este trabajo de investigación, se obtienen los parámetros óptimos de operación en el proceso de electroerosionado mediante un diseño de experimento. -
The Squirrel-Cage Induction Motor Model and Its Parameter Identification Via Steady and Dynamic Tests
(2018-04-20)One of the most important bases for designing robust closed-loop controllers applied to induction motor with high performance is establishing its mathematical model and state observers, as well as the parameter identification ... -
Low-temperature synthesis of cds and zns nanoparticles by solution method using an anionic surfactant
(2018-11-01)In this work, we present a novel and simple solution method to synthesize cadmium sulfide (CdS) and zinc sulfide (ZnS) nanoparticles (Nps). The solution-based processes for CdS and ZnS were carried out at room temperature ... -
Hydrogeological characterization of the perennial spring “El Pozito” Northeast of the Juárez city mountain, Chihuahua, México
(2018-12-31)Abstract “El Pozito” spring has been the source of consumption during 50 years by nearby communities of Juárez city, so it can be said that it is perennial. Therefore, two main aims justify the present research. Firstly; ... -
Polymeric Nanocomposites Membranes with High Permittivity Based on PVA-ZnO Nanoparticles for Potential Applications in Flexible Electronics
(2018-11-10)This study reports the optical, structural, electrical and dielectric properties of Poly (vinyl alcohol) thin films membranes with embedded ZnO nanoparticles (PVA/ZnO) obtained by the solution casting method at low temperature ... -
Multipass Scratch Behavior of Borided and Nitrided H13 Steel
(2018-08-01)AISI H13 steel was subjected to boriding and nitriding; its performance was evaluated by the progressive load scratch test, and then by the multipass scratch test (MPST), to evaluate the accumulated damage. Boriding and ... -
Influence of post‑deposition annealing on the chemical states of crystalline tantalum pentoxide films
(2018-11-01)We investigate the effect of post-deposition annealing (for temperatures from 848 K to 1273 K) on the chemical properties of crystalline Ta2O5 films grown on Si(100) substrates by radio frequency magnetron sputtering. The ... -
Adhesive and Cohesive Strength in FeB/Fe2B Systems
(2018-05-01)In this work, FeB/Fe2B systems were evaluated by the scratch test. The powder-pack boriding process was performed on the surface of AISI M2 steel. The mechanical parameters, such as yield stress and Young’s modulus of the ... -
Polyestyrene and Low Density Polyethylene Oregano´s Essential Oil Functionalization for Possible Antimicrobial Active Packaging Applications
(2018-09-24)Low density polyethylene (LDPE) and polystyrene (PS) samples were functionalized with oregano´s essential oil (OEO) for possible antimicrobial packing applications. Different concentrations of OEO were used (0.5-1.5 % ... -
Automated detection of parenchymal changes of ischemic stroke in non-contrast computer tomography: A fuzzy approach
(2018-06-05)The detection of ischemic changes is a primary task in the interpretation of brain Computer Tomography (CT) of patients suffering from neurological disorders. Although CT can easily show these lesions, their interpretation ... -
Influence of Sintering Temperature on AlCoCrFeNiMo(Tix, x=0,1) High Entropy Alloys
(2018-08-01)In several reported investigations related to powder metallurgy, the manufacture of consolidated specimens by advanced sintering techniques such as hot pressing and spark plasma sintering is preferred, since denser products ... -
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 ...