ListarArtículo en revista de investigación por tema "info:eu-repo/classification/cti/7"
Mostrando ítems 501-520 de 574
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Sputtering power e ects on the electrochromic properties of NiO lms
(2021-02-13)The effect of sputtering power (=60 W–180 W) on the electrochromic properties of nickel oxide films deposited on ITO-coated glass substrates by the radio frequency magnetron sputtering technique was investigated. Crystalline ... -
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 ... -
Statistical inference of multivariable modal stability margins of time delay perturbated power systems
(2020-01-07)This paper proposes a modal statistical inference algorithm to define multivariable operational stability limits of time-delay perturbed dynamic systems by employing remote sensor signals. Our proposal overcomes the drawbacks ... -
Stress concentration reduction in an axially loaded rectangular bar with an elliptical hole
(2023-03-17)Two-dimensional finite element analysis was used for stress concentration factors estimation in a wide range of bar-ellipse height and height-width elliptical hole ratios in a tensile bar. Least squares ... -
Stress-Based Weibull Method to Select a Ball Bearing and Determine Its Actual Reliability
(2020-11-16)Since the designed bearing’s reliability of 90% was determined in a lab environment, it does not represent the actual used environment. In this paper, a new methodology to determine the actual reliability that corresponds ... -
Stress-strength Weibull analysis with different shape parameter B and probabilistic safety factor
(2020-11-05)Since products are subjected to a random variable stress-strength, their reliability must be determined using the stress-strength analysis. Unfortunately, when both, stress and strength, follow a Weibull distribution with ... -
Structural and magnetic behavior of oxidized and reduced fe doped LiNbO3 powders
(2018-02-26)Changes in structural and magnetic properties have been systematically induced in lithium niobate (LiNbO 3) powders, Fe-doped with different concentrations and thermally treated in oxidized and reduced states. A rather ... -
Structural transformation of vanadate nanotubes into vanadate oxides nanostructures during the dry reforming of methane
(2019-09-20)The metal-containing vanadate nanotubes namely MeVO-NT (Me=Ni, Co or Pt) were in situ transformed into vanadate oxides nanostructures i.e., MeVxOy, during the methane dry reforming. All the experimental observations through ... -
Study of CdS/CdS Nanoparticles Thin Films Deposited by Soft Chemistry for Optoelectronic Applications
(2023-05-31)Chalcogenides semiconductors are currently being studied as active layers in the development of electronic devices in the field of applied technology. In the present paper, cadmium sulfide (CdS) thin films containing ... -
Study of indium tin oxide–MoS2 interface by atom probe tomography
(2019-12)The molybdenum disulfide (MoS2) and indium tin oxide (ITO) interface were studied by atom probe tomography (APT). Raman spectroscopy, scanning electron microscopy, and grazingincidence x-ray diffraction measurements were ... -
Study of the Effect of Combining Activation Functions in a Convolutional Neural Network
(2020-11-04)Convolutional Neural Networks (CNN’s) have proven to be an effective approach for solving image classification problems. The output, the accuracy and the computational efficiency of a CNN are determined mainly by the ... -
Study of the thermal diffusivity of nanofluids containing SiO2 decorated with Au nanoparticles by thermal lens spectroscopy
(2019-08-05)In this work, silicon dioxide (SiO2) spheres and gold nanoparticles (Au) were prepared. The SiO2 was used as a platform to deposit the gold nanoparticles. The SiO2 structures were synthesized employing the Stöber method. ... -
Studying the Effect of Temperature on the Tensile Strength of an Intravascular Catheter Using a Degradation Model
(2022-06-15)The accelerated aging process is incorporated into the design and development of intravascular catheters to assess their reliability assuring that this medical device is safe and effective for the intended use during their ... -
Super-Twisting Algorithm Applied to Velocity Control of DC Motor without Mechanical Sensors Dependence
(2020-11-19)A DC motor velocity control in feedback systems usually requires a velocity sensor, which increases the controller cost. Additionally, the velocity sensor used in industrial applications presents several disadvantages ... -
Suppliers selection based on intuitionistic fuzzy dimensional analysis
(2020-08-11)Supplier selection is a crucial activity in the supply chain management, and fundamentally it is a multi-criteria decision-making problem. However, the interaction of the criteria, the uncertain regarding to subjectivity ... -
Surface characterization of poly-2-vinylpyridine—A polymer for area selective deposition techniques
(2019-09-02)Thin films of OH terminated poly-2-vinylpyridine (P2VP), a polymer with potential for infiltration mediated thin film deposition, area selective deposition (ASD), and small feature size development via block copolymer (BCP) ... -
Susceptibility to Pitting Corrosion of Ti-CP2, Ti-6Al-2Sn-4Zr-2Mo, and Ti-6Al-4V Alloys for Aeronautical Applications
(2021-06-23)Titanium alloys are used in different industries like biomedical, aerospace, aeronautic, chemical, and naval. Those industries have high requirements with few damage tolerances. Therefore, they are necessary to use ... -
Synergism in novel silver-copper/hydroxyapatite composites for increased antibacterial activity and biocompatibility
(2020-08-15)This study develops a novel silver-copper/hydroxyapatite composite (Ag–Cu/HA) with high biocompatibility and antibacterial activity. Two different materials were synthesized, namely silver-hydroxyapatite (Ag-HA) and ...