El presente estudio de investigación titulado: Competencias digitales y desempeño docente en la educación híbrida en el colegio de aplicación Fortunato Luciano Herrera Garmendia del Cusco – 2022. Tiene como objetivo determinar la relación de sus variables de estudio en un contexto educativo híbrido. La investigación es de tipo analítico y nivel correlacional, de enfoque cuantitativo, diseño no experimental transversal. La población de estudio ha sido de 108 profesores, mientras que la muestra ha sido de 30 docentes de ambos turnos y niveles educativos, quienes respondieron los cuestionarios de las competencias digitales y desempeño docente. Para contrastar la hipótesis se utilizó el Rho de Spearman, determinándose en los resultados que existe una relación significativa entre las variables de estudio, demostrando una relación positiva con una significancia (bilateral) d...

The aim of this study was to determine the bleaching time of the black and brown fibre with hydrogen peroxide and to evaluate the percentage of medullated fibres according to colour and sampling site in the Huacaya alpaca fleece. In total, 90 fibre samples (shoulder, mid-side area, and rump) were taken from 30 alpacas (10 black, 10 brown, and 10 white). The fibre (2 g) was bleached at different times (5-105 min) with 20 g hydrogen peroxide (40 volume oxygenated cream) and 10 g bleaching powder (High lift 9 Tones). The colorimetric coordinates (L*a*b*) were evaluated at 5, 10, 35, 70 and 105 min in black fibre and at 35 and 70 minutes in brown fibre. After the microscopic analysis, fibre medullation percentage and their standard error were calculated. The luminosity in black fibre is low (5.19 ± 1.78), which increases with bleaching time to 86.60 ± 1.49 at minute 105. The luminosity in ...

The aim of this research was to compare vicuña fibre by the Fourier transform infrared (FTIR) spectroscopy, determine the colorimetric parameters and the percentages of medullation in vicuña fibre from Puno and Apurímac (Peru). Luminosity (L*), colour intensity or purity (C*) and hue (H*) were characterized by colorimetry. These parameters demonstrate a variability of colour and tonality in the vicuña fleece. The FTIR spectra in fibre from vicuñas from Puno and Apurimac overlap, confirming a similar chemical profile in the fibre structure. The percentage of total medullation is different according to the origin, where the vicuñas of the Community of Toma (Puno) have higher percentage of medulation (5.02%), while the vicuñas of the communities of Pilluni (1.65%) and Taraccasa (1.80%) of Apurimac maintain a lower percentage of medullation. Likewise, variability in the percentage of ...