Results 31 to 40 of about 128,642 (178)

MAGNETIC AND HYPERFINE CHARACTERIZATION OF THE THERMAL TRANSFORMATION CuO - Fe2O3 TO Fe3O4

open access: yesMomento, 2018
A magnetic study about the thermal transformation of hematite doped with CuO (Fe2O3 + CuO) is presented. The heat treatment was carried out at a temperature of 375 ± 1 ºC, in a controlled atmosphere composed by 20% hydrogen and 80% nitrogen. Samples were
Juan D. Betancur   +3 more
doaj   +1 more source

Modelo de cuantificación del consumo energético en edificación [PDF]

open access: yes, 2012
The research conducted in this paper focuses on the generation of a model for the quantification of energy consumption in building. This is to be done through one of the most relevant environmental impact indicators associated with weight per m2 of ...
Mercader-Moyano, Pilar   +2 more
core   +2 more sources

Foraging plasticity and physiological adaptations enable hummingbirds to subsist on dilute nectars

open access: yesFunctional Ecology, Volume 40, Issue 5, Page 1475-1490, May 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Hummingbirds frequently feed on small volumes (<30 μL) of sucrose‐rich nectars. Climate change is expected to affect both the abundance and the concentrations of accumulated nectar.
Rosalee L. Elting   +5 more
wiley   +1 more source

A Derivation of the Nonlocal Volume-Averaged Equations for Two-Phase Flow Transport

open access: yesScience and Technology of Nuclear Installations, 2012
In this paper a detailed derivation of the general transport equations for two-phase systems using a method based on nonlocal volume averaging is presented.
Gilberto Espinosa-Paredes
doaj   +1 more source

On the numerical solution of the point reactor kinetics equations

open access: yesNuclear Engineering and Technology, 2020
The aim of this paper is to explore the 8th-order Adams-Bashforth-Moulton (ABM8) method in the solution of the point reactor kinetics equations. The numerical experiment considers feedback reactivity by Doppler effects, and insertions of reactivity.
D. Suescún-Díaz, G. Espinosa-Paredes
doaj   +1 more source

Implementación de una aplicación web de registro de datos de evaluación de recursos energéticos renovables [PDF]

open access: yes, 2016
El propósito fundamental de esta investigación es implementar una aplicación web de registro de datos de evaluación de recursos energéticos renovables en el servidor de aplicaciones de la FAREM-Estelí, la investigación es descriptiva ya que se detallan ...
Martínez Abarca, Leticia   +1 more
core  

Microbial Contribution to Soiling and Its Impact on Photovoltaic Module Soiling in Arid Zones of the Atacama Desert

open access: yesAdvanced Sustainable Systems, Volume 10, Issue 4, April 2026.
Microorganisms colonizing photovoltaic surfaces in the Atacama desert form biofilms that enhance particle adhesion and reduce energy yield. This study identifies UV‐resistant bacteria and carotenoid‐producing strains that interfere with PV performance.
Douglas Olivares   +8 more
wiley   +1 more source

Severe Accident Simulation of the Laguna Verde Nuclear Power Plant

open access: yesScience and Technology of Nuclear Installations, 2012
The loss-of-coolant accident (LOCA) simulation in the boiling water reactor (BWR) of Laguna Verde Nuclear Power Plant (LVNPP) at 105% of rated power is analyzed in this work. The LVNPP model was developed using RELAP/SCDAPSIM code.
Gilberto Espinosa-Paredes   +2 more
doaj   +1 more source

Implementación de una aplicación web de registro de datos de evaluación de recursos energéticos renovables para la Facultad Regional Multidisciplinaria de Estelí durante el II semestre académico 2015 [PDF]

open access: yes, 2016
El propósito fundamental de esta investigación es implementar una aplicación web de registro de datos de evaluación de recursos energéticos renovables en el servidor de aplicaciones de la FAREM-Estelí, la investigación es descriptiva ya que se detallan ...
Martínez Abarca, Leticia   +1 more
core  

Interactions of rare earth elements with living organisms and emerging biotechnical applications

open access: yesPLANTS, PEOPLE, PLANET, Volume 7, Issue 5, Page 1251-1274, September 2025.
Rare earth elements (REEs) are critical resources required to achieve net‐zero carbon emission targets and energy security. However, rising demand for REEs coupled with significant extraction and processing challenges and geopolitical risks restricts access to REE resources.
Samantha A. McGaughey   +6 more
wiley   +1 more source

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