Results 1 to 10 of about 150,595 (266)

Rainfall and temperature trends in the Altiplano Potosino Region, Mexico (1975-2015)

open access: yesTecnología y ciencias del agua, 2022
The observed changes in the climate systems during the last decades have generated a growing popular concern, especially in the scientific world, which has led to a series of research on the causes and possible consequences of climate change.
Hermann Rocha-Escalante   +7 more
doaj   +1 more source

LOS EXCEPCIONALES REPTILES VOLADORES Y OTROS HALLAZGOS DE SAN LUIS

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2022
El presente trabajo resume la historia de la paleontología en los sedimentos mesozoicos de la provincia de San Luis, como así también, reseñas históricas de cómo surgieron las primeras actividades relacionadas a la creación de un museo.
Laura Codorniú   +4 more
doaj   +1 more source

Figuras históricas en Le Boccace français de Sade: reyes y emperadores

open access: yesAnales de Filología Francesa, 2023
Este análisis se ocupa de las figuras históricas de reyes y emperadores en Le Boccace français, compilación de relatos breves que Donatien Alphonse François de Sade (1740- 1814) redactó en la Bastilla en 1787 y 1788.
Irene Aguilá-Solana
doaj   +1 more source

Roasting temperature effect on the recovery of refractory gold and silver in pyrite concentrates [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2021
Pyrite concentrates with refractory gold and silver were roasted at different temperatures to improve the recovery of the metals by cyanide leaching.
Zhang Y.-P.   +5 more
doaj   +1 more source

Development of an efficient solar concentrator and utilization in copper extraction from copper minerals [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy
A novel and cost-effective solar concentrator was developed to enhance efficient copper extraction. Based on the criteria for a stationary compound parabolic concentrator, the reflector geometry incorporates a half-spherical curve and a strength line ...
Yang K.   +4 more
doaj   +1 more source

Bioaccessibility studies of Fe, Cu and Zn from Spirulina dietary supplements with different excipient composition and dosage form [PDF]

open access: yesJournal of Pharmacy & Pharmacognosy Research, 2020
Context: The cyanobacteria Spirulina is a food supplement according to its high nutritional value. However, the bioaccesibility (Bac) of nutrients like Fe, Cu and Zn from Spirulina can be affected by excipients and formulations of supplements.
María V. Principe   +5 more
doaj  

The pyroclastic dikes of the Tertiary San Luis Potosí volcanic field: Implications on the emplacement of Panalillo ignimbrite

open access: yesGeofísica Internacional, 2006
Una serie de diques piroclásticos en el Campo Volcánico de San Luis Potosí está asociada a fallas regionales que cortan y basculan a la secuencia volcánica terciaria (32–27 Ma).
José Ramón Torres-Hernández   +4 more
doaj   +1 more source

Secure Computer Network: Strategies and Challengers in Big Data Era

open access: yesJournal of Computer Science and Technology, 2018
As computer networks have transformed in essential tools, their security has become a crucial problem for computer systems. Detecting unusual values from large volumes of information produced by network traffic has acquired huge interest in the network ...
Mercedes Barrionuevo   +3 more
doaj   +1 more source

Orchidaceae de San Luis Potosí, México: riqueza y distribución

open access: yesBotan‪ical Sciences, 2021
Antecedentes: El estado de San Luis Potosí carece a la fecha de un registro preciso de la riqueza y distribución de la familia Orchidaceae. Pregunta: ¿Cuáles son los géneros y especies de Orchidaceae en el estado, su distribución geográfica y ...
Javier Fortanelli-Martínez   +8 more
doaj   +1 more source

Diagrama de sombrilla para el análisis de factores protectores y de riesgo en salud pública

open access: yesInterdisciplinary Journal of Epidemiology and Public Health
El diagrama de “sombrilla” está enfocado en el análisis de los factores protectores y de riesgo, nace del programa de Salud Pública “Cuidarse está Cool”.
Francisca Angélica Hernández Torres   +6 more
doaj   +1 more source

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