A5043762467- Metallic Glasses and Amorphous Alloys
- Quasicrystal Structures and Properties
- Magnetic Properties of Alloys
- Microstructure and Mechanical Properties of Steels
- Microstructure and mechanical properties
- Mineralogy and Gemology Studies
- Magnetic properties of thin films
- Magnetic Properties and Applications
- Magnetic Properties and Synthesis of Ferrites
- Metal Alloys Wear and Properties
- Metallurgical and Alloy Processes
- Advanced materials and composites
- X-ray Diffraction in Crystallography
- Electrodeposition and Electroless Coatings
- Iron oxide chemistry and applications
- Aluminum Alloy Microstructure Properties
- High-Temperature Coating Behaviors
- Clay minerals and soil interactions
- Sensor Technology and Measurement Systems
- Electrocatalysts for Energy Conversion
- Pigment Synthesis and Properties
- Shape Memory Alloy Transformations
- Plasma Applications and Diagnostics
- Bone Tissue Engineering Materials
- Semiconductor materials and interfaces
National University of San Marcos
2009-2024
Universidad Michoacana de San Nicolás de Hidalgo
2024
Francisco de Paula Santander University
2021
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2020
Forum Solidaridad Perú
2016
University of Puerto Rico at Río Piedras
2002
Pontifical Catholic University of Rio de Janeiro
1997
Centro Brasileiro de Pesquisas Físicas
1992-1996
Peru has experienced unprecedented mortality and economic toll due to the COVID-19 (Coronavirus disease 2019) pandemic in 2020. We aimed assess association between socioeconomic factors excess death rate, explore relative contribution of these differences rate during January-December 2020.Different national secondary data sources were used describe rates different determinants, from distal proximal. A confounding-adjusted multilevel mixed-effects linear regression was variables rates. Their...
The extensive utilization of dyes across diverse industries has resulted in environmental pollution, leading to the degradation water bodies. To prevent contamination, use eco-friendly and innovative processes for dye is crucial. This study aimed investigate color removal process cochineal (Dactylopius coccus Costa) using atmospheric pressure plasma jet (APPJ: Atmospheric Pressure Plasma Jet) technique. extracted from insect was treated with APPJ resulting analyzed. Optical emission...
Mechanical milling was performed on the alloy Cr72Fe28. X-ray diffraction and Mossbauer spectroscopy were used to follow progress of structural variation. The experimental results can be interpreted by assuming that milled powders are composed a small amount crystalline component two disordered components: one with random densely packed structure other loosely structure. Moreover, differential scanning calorimetry obtain crystallization temperature. A mechanism proposed describe formation...
Mechanical behavior of hydroxyapatite-based composites (HAp) was studied as a function the reinforcement concentration quasicrystalline (QC) Al 64 Cu 23 Fe 13 alloy. The synthesis HAp matrix carried out by sol-gel method, while QC performed an arc furnace with subsequent thermal treatment. were made powder metallurgy and cold compacted to form test pieces that sintered constant flow argon. materials characterized using X-ray diffraction, scanning electron microscopy, Fourier transform...
The effect of mechanical milling in i-Al<sub>64</sub>Cu<sub>23</sub>Fe<sub>13</sub>quasicrystalline and ω-Al<sub>70</sub>Cu<sub>20</sub>Fe<sub>10</sub>crystalline phases is systematically investigated the present work.
Mössbauer experiments were performed at room temperature using different experimental configurations on several series of nanocrystalline FeSiBCuNbX alloys (X = Zr, Nb, Mo and V) obtained after annealing treatments melt-spun ribbons. The refinement spectra allows the kinetics local structural rearrangement mechanisms associated with nanocrystallization process to be compared. hyperfine field distributions intergranular phase show emergence a bimodal behaviour that becomes significantly more...
By electrochemical anodization to titanium sheets, dioxide nanostructures were sintered for 10 V and 20 times of 3 hours 5 hours. For the electrolytic solution, 0.3 g ammonium fluoride, 97 mL ethylene glycol distilled water used. The sheets (51 mm × 21 0.4 mm) treated using abrasive paper cleaned with a 1:1 solution ethanol by means ultrasound dried hot air. A stirring frequency 300 rpm was used during anodizing. sintering anatase phase, heat treatment applied at 550 °C an electric muffle,...
Abstract The spray-forming process is a promising processing route for producing high-performance high-carbon steels. In this study, as-received and hardened/tempered spray-formed (SF) AISI 440C-Mod steel compared to its vacuum cast (VaC) counterpart. For materials microstructure characterization scanning electron microscopy, X-ray diffraction analysis, energy dispersive spectroscopy, backscatter were utilized. the of mechanical properties performance hardness, tensile, compression testing...