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Now showing items 11-20 of 136
Descripción de los problemas resueltos de corriente alterna en libros de texto universitariosDescription of AC solved problems in college textbooks
(Asociación de Profesores de Física de la Argentina, 2016-11-16)
Se exploró una muestra intencional de problemas resueltos, inherentes a circuitos de corriente alterna, que se muestran en diez libros de texto universitarios de uso frecuente en Argentina. Los resultados señalan que en ...
Mycoremediation of high concentrations of polychlorinated biphenyls with Pleurotus sajor-caju LBM 105 as an effective and cheap treatment
(Elsevier, 2019-10-22)
Polychlorinated biphenyls (PCBs) are exceptionally stable organic pollutants. An effective and economically feasible process is essential for their removal. Mycoremediation using white-rot fungal strains proved as a highly ...
La complejidad de las simplificaciones en la enseñanza de la mecánica en el ciclo inicial universitario: el caso del tratamiento de las poleas en libros de texto
(Universidad Federal de Santa Catarina, 2017-08-09)
Se presenta un estudio sobre libros de texto de Mecánica de uso generalizado en cursos de Física del ciclo inicial universitario de carreras científico-tecnológicas dictadas en universidades de habla hispana. A través de ...
Libros de texto y programas analíticos de física en carreras de Ingeniería de la UNaM
(Asociación de Profesores de Física de la Argentina, 2015-11-19)
Se muestran resultados de un estudio descriptivo de casos múltiples. Se identificaron, mediante la recopilación documental y el análisis de contenido, los libros de texto (LT) más frecuentemente recomendados a los estudiantes ...
IloT : gestión de la temperatura y la humedad en el proceso de fermentado del té negro
(Universidad de Santiago Cali. Colombia, 2019-06-19)
En el proceso productivo del té negro existen parámetros que se deben mantener bajo estricto control para así asegurar una calidad del producto acorde a la demanda internacional. En este trabajo se presenta un prototipo ...
Evaluation of rice by-products, incubation time, and photoperiod for solid state mass multiplication of the biocontrol agents Beauveria bassiana and Metarhizium anisopliae
(Estonian Agricultural University, 2018-08-01)
The success of biological control of insect pests depends not only on the isolation, characterization, and pathogenicity, but also on the success of the mass production of the microbial agents. The biological control ...
Influence of temperature and packaging type on quality parameters and antimicrobial properties during Yateí honey storage
(Sociedad Brasilera de Ciencia y Tecnología de Alimentos, 2017-12-21)
Tetragonisca fiebrigi, is a bee of the subfamily Meliponidae traditionally known as Yateí. Its honey differs from the honey produced by Apis mellifera because it is less viscous, more acidic, has sweetness and particular ...
Social networks and genetic algorithms to choose committees with independent members
(Elsevier, 2016-01-01)
Choosing committees with independent members in social networks can be regarded as a group selection problem where independence, as the main selection criterion, can be measured by the social distance between group members. ...
Optimization of the soda-ethanol delignification stage for a rice husk biorefinery
(Elsevier, 2017-03-01)
The aim of this work was to optimize the delignification of the hemicelluloses-free fraction of rice husk to obtain fractions of lignin, cellulose, and inorganics, which could be valorized in the context of the rice husk ...
Ascorbic acid and calcium uptake in pineapple tissue through different sucrose concentrations of impregnation solution
(Elsevier, 2019-06-19)
Incorporation of ascorbic acid and calcium in pineapple slices through impregnation processes in isotonic (∼14 °Bx) and hypertonic (50 °Bx) aqueous solution of sucrose was studied. Changes in water content, soluble solids, ...