Mostrando 1 - 4 Resultados de 4 Para Buscar 'Paz, R', tiempo de consulta: 0.03s Limitar resultados
1
objeto de conferencia
The covid 19 pandemic has led to various changes and an imminent adaptation, present in all sectors. One of them is education, by transferring the teaching-learning process from face-to-face classrooms to virtual ones, in this way university professors had to couple ICT (Information and Communication Technologies) to their methodologies, adopting or strengthening skills much-needed digital tools in today's world. The main objective of the research was focused on determining the level of digital skills that teachers of a Public University have using a quantitative approach of non-experimental cross-sectional design and with a descriptive level. The most outstanding findings are that more than half of the teachers have a level achieved in the five dimensions of digital skills; however, there is more than a third that requires strengthening the dimension of content creation, stressing that ...
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artículo
An experimental procedure has been developed to increase in a factor of 50 the magnetic permeabilitY of mumetal bars (Ni77Fe14Cu5Mo4). The procedure consists of a heat treatment under inert atmosphere, for which a programmable automatic temperature regulator of high precísion was designed and constructed. It has been verified that during the treatments the system is able to maintain a stable temperature of more than 1000 oc with an error smaller than 2 oc and with smaller linear gradients of 1%. In addition permeameter with electronic airflow meter was designed and constructed for monitoring the magnetic permeability. The treated bar was used to construct a magnetic pair (magnetic torquex) for satellite. The produced instrument develops a maximun magnetic dipole of 25 Am2 in its linear zone with a consumption of less than 0,3 W of power and one mass of 2,1 kg Taking advantage of the int...
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revisión
Cisplatin-based neoadjuvant therapy has shown clear benefits in clinical stage II or IIIA muscle invasive bladder cancer (MIBC), achieving an impact in progression-free survival and overall survival. This updated review focuses on neoadjuvant therapy for MIBC, including the current recommendations from international and/or local practice guidelines, as well as studies of new therapeutic agents (immunotherapy, targeted therapy), on top of research on potential biomarkers that may predict response to immunotherapy. © 2022 Acta Medica Peruana. All rights reserved.
4
artículo
Sonochemical synthesis of monodisperse nickel nanoparticles (Ni-NPs) by reduction of Ni acetylacetonate in the presence of polyvinylpyrrolidone stabilizer is reported. The Ni-NPs size is readily controlled to 5 nanometer diameter with a standard deviation of less than 5%. The as-prepared Ni-NPs sample was dispersed in acetone, for 4 weeks. For structural analysis was not applied to a magnetic field or heat treatment as key methods to direct the assembly. The transition from separate Ni-NPs into self-organization of three dimensions (3D) superstructures was studied by electron microscopy. Experimental analysis suggests that the translation and rotation movement of the Ni-NPs are governed by magnetic frustration which promotes the formation of different geometric arrangements in two dimensions (2D). The formation of 3D superstructures is confirmed from scanning electron microscopy revealin...