Results 71 to 80 of about 158,660 (220)

Digestión anaerobia a bajas temperaturas

, 2022
Low speed anaerobic digesters are commonly used to produce energy from livestock manure (pig and / or bovine) on small and medium-sized farms; However, its use in cold climates faces the limitation of the decrease in biogas production and the potential failure due to acidification of the bed, not only due to the low environmental temperature, but also ...
openaire   +2 more sources

Calidad poscosecha de frutos de chayote almacenados a baja temperatura

Revista Mexicana de Ciencias Agrícolas, 2019
El chayote nigrum spinosum es uno de los principales genotipos que se comercializan en México, Estados Unidos de América y Canadá, siendo las comunidades latina y asiática sus mayores consumidores. Generalmente los trabajos reportados en esta especie se centran en el genotipo virens levis, pero existe muy poca información del comportamiento poscosecha ...
Laura Angelica Montecinos-Pedro, Ma. de Lourdes Catalina Arévalo-Galarza, Cecilia García-Osorio, Jorge Cadena-Iñiguez, Martha Elva Ramírez-Guzmán   +4 more
openaire   +2 more sources

Still little evidence of poleward range shifts in the tropics, but lowland biotic attrition may be underway

Biotropica, Volume 57, Issue 1, January 2025.
Based on reviews of more than 450 studies, documented climate‐driven species range shifts within the terrestrial tropics have been exclusively upslope—none poleward, a pattern we attribute to the lack of latitudinal temperature gradients within the tropics, as illustrated here.
Robert K. Colwell, Kenneth J. Feeley
wiley   +1 more source

La superfluidez en el 3HE: El descubrimiento visto a través de los ojos de un estudiante de postgrado

Momento, 1999
Como un estudiante graduado a mediados de los años 60, fui atraído a la física de bajas temperaturas por las nuevas y poderosas tecnologías de enfriamiento que se estaban desarrollando por ese entonces.
Douglas D. Osheroff
doaj  

Pressure effects in the triangular layered cobaltites NaxCoO2

, 2007
We have measured transport properties as a function of temperature and pressure up to 30GPa in the NaxCoO2 system. For the x=0.5 sample the transition temperature at 53K increases with pressure, while paradoxically the sample passes from an insulating to
C. Acha, G. Garbarino, M. L. Foo, M. Monteverde, M. Núñez-Regueiro, N. F. Mott, R. J. Cava   +6 more
core   +1 more source

CALIDAD DE NARANJA ‘VALENCIA’ DURANTE EL ALMACENAMIENTO A BAJA TEMPERATURA

Revista Chapingo Serie Horticultura, 2001
The quality of non waxed (control) and waxed ‘Valencia’ oranges was evaluated during a storage at 2 °C and 6 °C, and after marketing conditions (20 °C for six days). Every week during the cold storage, the fruits were evaluated for: Maturity index (total soluble solids/titratable acidity), color (a/b ratio), weight loss, chilling injury (CI), and decay.
A. Rodríguez-Félix, M.A. Villegas-Ochoa, G.A. Camarena-Gómez, B.R. Martínez-Antúnez   +3 more
openaire   +1 more source

Seasonal acclimation of photosynthetic thermal tolerances in six woody tropical species along a thermal gradient

Functional Ecology, Volume 38, Issue 11, Page 2493-2505, November 2024.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Extreme heat events are becoming increasingly common, and the short‐term acclimation of photosynthesis will have a large impact on plant performance. Trees in lowland tropical forests, which are hypothesized to have limited abilities to tolerate rising temperatures, may
Alyssa T. Kullberg, Kenneth J. Feeley
wiley   +1 more source

Superfluidez en el 3HE: El descubrimiento y la explicación

Momento, 1999
Al comenzar a escribir esta charla me acuerdo de la excitación general que permeaba el campo de la física de bajas temperaturas en 1971. Se habían desarrollado nuevas tecnologías de enfriamiento, y todos sentían que una física nueva, interesante e ...
Douglas D. Osheroff
doaj  

Propiedades magnéticas y petrofábrica de unidades volcánicas terciarias de Ia región de Arandas-Atotonilco, Jalisco, México

Geofísica Internacional, 1992
Se reportan los resultados de un estudio combinado de paleomagnetismo, propiedades magnéticas, observaciones con microscopio óptico en laminas delgadas y superficies pulidas, microscopio electrónico de barrido (SEM) y anisotropia de susceptibilidad ...
J. Urrutia-Fucugauchi, Roberto S. Molina Garza   +1 more
doaj   +1 more source

Physiological thermal niches, elevational ranges and thermal stress in dendrobatid frogs: An integrated approach

Journal of Biogeography, Volume 51, Issue 10, Page 1880-1893, October 2024.
Abstract Aim We investigated the relationship between thermal physiology, elevational distribution and thermal stress among nine closely related dendrobatid frogs during their aquatic stage by employing an integrated approach, combining thermal physiology, environmental temperature modelling and predictive assessments of current and future exposure to ...
Pol Pintanel, Miguel Tejedo, Agustín Camacho, Urtzi Enriquez‐Urzelai, Gustavo A. Llorente, Andrés Merino‐Viteri   +5 more
wiley   +1 more source