Refael-Vivante, Revital y Refael-Vivante, Shmuel. (2019). Las andanzas de Sofar. Edición crítica y estudio de un cuento hebreo Maasé Sofar (Salónica, 1600).

Es reseña de: Las andanzas de Sofar: Edición crítica y estudio de un cuento hebreo Maasé Sofar (Salónica, 1600) Revital Refael-Vivant (ed. lit.), Shmuel Refael (ed. lit.) Universidad de Granada, Editorial Universidad de Granada, 2019. ISBN 9788433864642Universidad Pablo de Olavid

Galloping instabilities of Z-shaped shading louvers

Modern design of civil constructions such as office blocks, airport terminal buildings, factories, etc. incorporates more and more environmental considerations that lead to, amongst other elements, the use of glazed façades with shading devices to optimize energy consumption. These shading devices, normally slats or louvers, are very flexible structures exposed to the action of wind, and therefore aeroelastic effects such as galloping must be taken into account in their design. A typical cross-section for such elements is a Z-shaped profile made out of a central web and two side wings. The results of a parametric analysis based on static wind tunnel tests and performed on different Z-shaped louvers to determine translational galloping instability regions are presented in this paper

A lab-scale rotary kiln for thermal treatment of particulate materials under high concentrated solar radiation: Experimental assessment and transient numerical modeling

Rotary kilns are worldwide used for industrial processes that involve thermal treatments of particulate materials. However, a great amount of fossil fuels is employed in such processes. As alternative, solar rotary kilns are considered for this application due to their versatility and potential to substitute traditional fossil-fuel driven devices. In order to boost the development of this technology, efforts have to be focused on the control of the particle temperature during the treatment. In this context, a lab-scale rotary kiln was built and tested using a 7- kWe high-flux solar simulator at University of Antofagasta. It was conceived to treat particulate materials of different nature and it is able to reach temperatures higher than 800 °C under different operation strategies. Silicon carbide was selected for initial tests because it is inert, endures high temperatures (up to 1600 °C) and it has been proposed as thermal storage vector in several researches on concentrated solar power. In a first stage, the empty kiln was preheated up to about 800 °C, reaching a steady state in less than three hours and with a power of approximately 370 W entering the kiln cavity. Afterwards, 43 g of silicon carbide were introduced in the furnace and the system was heated again up to a second steady state above 800 °C. In this stage, particles showed a fast increment of their temperature and exceeded 700 °C in less than three minutes after loading. A one-dimensional transient numerical model was also developed to perform the thermal analysis of the kiln and the estimation of both the particle temperature and the system efficiency. Numerical results showed good agreement with experimental data and thermal losses could be quantified in detail. Therefore, the model was also used to predict the thermal behavior of a solar rotary kiln working in batch mode.The authors acknowledge the financial support provided by the FONDECYT project number 3150026 of CONICYT (Chile), the Education Ministry of Chile Grant PMI ANT 1201, as well as CONICYT/ FONDAP/15110019 “Solar Energy Research Center” SERC-Chile. The authors also gratefully acknowledge the financial support received from the Sectorial Fund CONACYT-SENER-Energy Sustainability, through grant 207450, Mexican Center for Innovation in Solar Energy (CeMIE-Sol), whithin strategic project P-10 “Solar Fuels and Industrial Processes” (COSOLpi). Special thanks go to the students Lou Cardinale, Rodrigo Méndez, and Daniel Vidal who gave a precious contribution during the experimental trials at LaCoSA of University of Antofagasta

Algunas consideraciones de carácter docente sobre la circulación en los perfiles aerodinámicos y la posición del punto de remanso anterior.

Algunas consideraciones de carácter docente sobre la circulación en los perfiles aerodinámicos y la posición del punto de remanso anterior

One-pot synthesized functionalized mesoporous silica as a reversed-phase sorbent for solid-phase extraction of endocrine disrupting compounds in milks

A new procedure for the determination of 12 naturally occurring hormones and some related synthetic chemicals in milk, commonly used as growth promoters in cattle, is reported. The method is based on liquid–liquid extraction followed by solid-phase extraction (SPE) using a new one-pot synthesized ordered mesoporous silica (of the SBA-15 type) functionalized with octadecyl groups (denoted as SBA-15-C18-CO) as reversed-phase sorbent. The analytes were eluted with methanol and then submitted to HPLC with diode array detection. Under optimal conditions, the method quantification limit for the analytes ranged from 0.023 to 1.36 μg/mL. The sorbent affored the extraction of estrone, 17β-estradiol, estriol, progesterone, hexestrol, diethylstilbestrol, 4-androstene-3,17-dione, ethinylestradiol, 17α-methyltestosterone, nandrolone, prednisolone and testosterone with mean recoveries ranging from 72% to 105% (except for diethylstilbestrol) with RSD < 11%. These results were comparable and, in some cases, even better than those obtained with other extraction methods, therefore SBA-15-C18-CO mesoporous silica possess a high potential as a reversed-phase sorbent for SPE of the 12 mentioned endocrine disrupting compounds in milk samples

Exploración sobre los resultados de ciencia e innovación de la Universidad de Oriente en el período 2011-2015 Exploration about the science results and innovation of the University of Oriente in the period 2011-2015

The article presents an analysis on the science results and innovation obtained in the University of Oriente during the period 2011 at the 2015. The investigation, of exploratory character, combines quantitative and qualitative methods, to determine the main difficulties related with the behavior of this results. The derived conclusions of the analysis indicate that they exist inadequacies that have their base in the form in that has been developed the administration of the process of scientific investigation and their evaluation, during that period, revealing opportunities for a methodological intervention in this administration

Compuestos neurogénicos basados en melatonina y su uso en el tratamiento de enfermedades del sistema nervioso

La presente invención, que se incluye en el campo de la investigación e industria farmacéutica, se refiere a nuevas entidades químicas derivadas de melatonina con propiedades neurogénicas, moduladoras de los receptores de melatonina y/o serotonina, antioxidantes y/o colinérgicas. También se refiere a los procedimientos para la preparación de estos nuevos compuestos, a las composiciones farmacéuticas que los contienen y a su uso para la fabricación de un medicamento para el tratamiento de enfermedades del sistema nervioso relacionadas con degeneración neuronal, depresión, trastornos psiquiátricos y cognitivos, trauma o lesión celular, u otro trastorno neurológico relacionado, tratamiento de fatiga diurna, trastornos del sueño, pérdida de eficacia mental, debilidad e irritabilidad y síntomas relacionados con la descompensación horaria (efecto jet-lag o síndrome transoceánico).Peer reviewedConsejo Superior de Investigaciones Científicas, Universidad Autónoma de MadridB1 Patente sin examen previ

Exploración sobre los resultados de ciencia e innovación de la Universidad de Oriente en el período 2011-2015 Exploration about the science results and innovation of the University of Oriente in the period 2011-2015

The article presents an analysis on the science results and innovation obtained in the University of Oriente during the period 2011 at the 2015. The investigation, of exploratory character, combines quantitative and qualitative methods, to determine the main difficulties related with the behavior of this results. The derived conclusions of the analysis indicate that they exist inadequacies that have their base in the form in that has been developed the administration of the process of scientific investigation and their evaluation, during that period, revealing opportunities for a methodological intervention in this administration

Vocabulario bilingüe de Arquitectura Gótica

Trabajo de terminología sistemática sobre la arquitectura gótica en inglés y español