Results 41 to 50 of about 62,126 (159)
Compost obtained from feces of dairy cattle vs. fertilizer on triticale production (X Triticum secale Wittmack) [PDF]
El uso de abono es cada vez más frecuente en la agricultura por su efecto positivo sobre la fertilidad del suelo. El objetivo del presente estudio fue determinar la altura de planta, número de tallos por m2, longitud foliar, número de hojas por tallo y ...
Beltrán Santoyo, Miguel Ángel +3 more
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Improved Operation of the Modified Non-Inverting Step-Down/Up (MNI-SDU) DC-DC Converter
This paper presents an enhanced operation strategy for a recently proposed converter called Modified Non-Inverting Step-Down/Up (MNI-SDU) DC-DC converter intended for battery voltage regulation.
Juan A. Villanueva-Loredo +5 more
doaj +1 more source
An annotated list of the centipedes (Chilopoda) in the National Collection of Arachnids, Instituto de Biología, Universidad Nacional Autónoma de México [PDF]
The National Collection of Arachnids, Instituto de Biología, Universidad Nacional Autónoma de México (México City) houses 476 chilopod samples, of which 197 are determined to genus and/or species. These are documented here and represent several new state
Cupul-Magaña, Fabio Germán
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Los antibióticos son fármacos considerados como contaminantes emergentes, usados para el tratamiento de enfermedades bacterianas, en salud humana y veterinaria.
Jessica Meléndez-Marmolejo +6 more
doaj +2 more sources
Introducción: El objetivo de esta investigación fue evaluar el efecto de una intervención educativa contextualizada a los alimentos disponibles en una comunidad indígena de la Huasteca Potosina, sobre la hemoglobina capilar.
Alejandra Castañeda-Díaz de León +4 more
doaj +1 more source
Efecto del propionato de calcio en la fermentación in vitro de dietas a base de sorgo [PDF]
The objective of the present study was to evaluate the effect of calcium propionate (CaPr) on in vitro ruminal fermentation using a factorial arrangement 2 x 2 evaluating CaPr (0 vs. 1%) and grain level (55 vs. 65%).
Crosby-Galván, María Magdalena +7 more
core +2 more sources
Women, Men, and the Legal Languages of Mining in the Colonial Andes [PDF]
Histories of colonial Latin American mining have cemented the image of a scientifically backward society whose pursuit of easy wealth sacrificed the lives of indigenous and African miners in places like Potosí. By examining a mid seventeenth-century mine
Allison Margaret Bigelow
core +1 more source
El estudio estructural de la Sierra Madre Oriental, hacia los límites entres la Cadena Alta (parte de la Napa de Parras) y la extremidad norte de la Plataforma Valles – San Luis Potosí permite mostrar: que la Cadena Alta cabalga en dirección ESE ...
M. Tardy, C. Ramírez R., M. Patiño A.
doaj
New records of biting midges of the genus Culicoides Latreille from Mexico (Diptera: Ceratopogonidae) [PDF]
We provide the first records of six species of biting midges (Diptera: Ceratopogonidae) in the genus Culicoides Latreille from Mexico: C. baueri Hoffman, C. castillae Fox, C. debilipalpis Lutz, C. iriartei Fox, C. leoni Barbosa and C. pusilloides Wirth
Castrejón, M. Rodríguez +3 more
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This paper examines the main characteristics of natural order associated to touristic practices thatsubsist in the San Luis Potosí territory, located at the meridian limit of the ancient Aridoamérica and occupies a central portion of the United States of
Valente Vázquez Solís
doaj

