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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 ... -
Lower Secondary School Mathematics Teachers’ TopicSpecific Content Knowledge in the U.S. and Russia
(2019-03-01)This interpretive cross-case study examined the U.S. and Russian teachers’ topic-specific knowledge of lower secondary mathematics. In total, N=16 teachers (8 from the U.S., and 8 from Russia) were selected for the study ... -
Machinery Lean Manufacturing Tools for Improved Sustainability: The Mexican Maquiladora Industry Experience
(2022-04-27)This paper reports a structural equation model (SEM) to quantify the relationship between Lean Manufacturing (LM) tools associated with machinery and sustainability. The LM tools are independent variables and include Total ... -
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 ... -
Magnetic properties of GaAs:Mn self-assembled nanostructures grown at relatively high-temperature by Molecular Beam Epitaxy
(2019-04-01)We report the influence of the Mn atomic concentration (at.%) on the nanostructures formation and magnetic properties of GaAs:Mn layers grown by Molecular Beam Epitaxy at a relatively high substrate temperature of 530 °C ... -
Magnetite nanoparticles coated with PEG 3350-tween 80: In vitro characterization using primary cell cultures
(2020-02-02)Some medical applications of magnetic nanoparticles require direct contact with healthy tissues and blood. If nanoparticles are not designed properly, they can cause several problems, such as cytotoxicity or hemolysis. A ... -
Magnetocaloric effect in ErNi2 melt-spun ribbons
(2019-08-17)ErNi2 ribbons were produced by rapid solidification using the melt spinning technique. Their structural, magnetic and magnetocaloric properties in the as-solidified state were studied by X-ray diffraction, scanning electron ... -
Magnetoelastic transition and magnetocaloric effect in induction melted Fe100-xRhx bulk alloys with x = 50, 51
(2021-03-23)Magnetoelastic transitions (METs) in bulk in nearly equiatomic Fe-Rh alloys produced by arc melting may show poor reproducibility related to insufficient chemical homogeneity and presence of impurity phases in variable ... -
Magnetostructural transition and magnetocaloric effect in thermally annealed Mn0.5Fe0.5NiSi0.945Al0.055 melt-spun ribbons
(2021-04-19)Were fabricated melt-spun ribbons of the quinary alloy Mn0.5Fe0.5NiSi0.945Al0.055. After an annealing time of 4 h at temperatures between 1073 K and 1223 K, samples underwent a martensitic-like magnetostructural transformation ... -
Magnetostructural transition and magnetocaloric effect in thermally annealed Mn0.5Fe0.5NiSi1-xAlx melt-spun ribbons (x= 0.055 and 0.060)
(2023-02-08)Melt-spun ribbons samples of the multicomponent alloy Mn0.5Fe0.5NiSi0.940Al0.060 were prepared and the magnetostructural transition (MST) and related magnetocaloric properties studied for as-solidified ribbons and ribbon ... -
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 ... -
Major and trace element geochemistry of Permo-Triassic granitoids from NW Sonora, Mexico: Constraints on the origin of the Late Paleozoic-early Mesozoic Cordilleran magmatic arc along SW Laurentia
(2022-06-07)Permo-Triassic granitoids (PTGs) (284–224 Ma) crop out in Sierra Los Tanques (SLT) and surrounding areas in NW Sonora, Mexico. Based on mineralogical and geochemical characteristics, the PTGs are subdivided into three main ... -
La Manufactura Aditiva y los Materiales Compuestos en el Diseño de Prótesis Transtibiales de Uso Deportivo
(2018-07)En el presente trabajo se revisa el estado del arte que guarda la manufactura aditiva en cuanto a sus avances en la mejora de sus materiales, específicamente, a través de la incorporación de materiales compuestos, como ... -
Materiales Reabsorbibles en el Tratamiento de Fracturas Maxilofaciales Pediátricas
(2018-07-14)El propósito de esta investigación es realizar una revisión del conocimiento sobre los materiales biodegradables y su aplicación como sistemas de fijación para la estabilización de fracturas óseas en el área maxilofacial ... -
Mathematical help-seeking: observing how undergraduate students use the Internet to cope with a mathematical task
(2020-01-07)We report on a study focused on identifying how undergraduate students make use of the Internet as a source of help to solve their mathematical queries. In particular, with the help of monitoring software, we observe how ... -
Mathematical modeling of a 3-CUP parallel mechanism using the Fermat point
(2021-03-18)This document is devoted to the analysis of the pose and velocity kinematics, as well as of the dynamics, for a parallel mechanism with three degrees of freedom, of the type known as 3-CUP. This mechanism is constituted ... -
Measuring Back Injury Risk in Mexican Workers of an Automotive Company
(2019-05)850 thousand workers per year spread across the 32 states, of which Puebla contributes with 465 106, developing, in a high percentage, the verification of new parts as part of the manufacture process. This activity is ... -
Measuring the complex construct of macroergonomic compatibility: A manufacturing system case study
(2018-01-24)Macroergonomic compatibility (MC) refers to the extent to which macroergonomic factors and elements (MFEs) interact positively with humans. It is one of the most complex constructs to measure in work systems and in ... -
Mecanismo de auditoría para detección de manipulación de votos en sistemas de votación electrónica
(2018-02-28)Los sistemas de voto electrónico son propensos a fallas, errores y ataques intencionales. Un riesgo de estos sistemas es la adición o eliminación de votos directamente en el medio de almacenamiento, usualmente una base de ... -
Mechanical design of a low-cost ABS hand prosthesis using the finite element method
(2021-09-01)Many hand accidents are reported around the world resulting in a necessity to perform a procedure of amputation of the hand. For this consideration, a large number of hand prostheses have been designed. However, the ...