Results 71 to 80 of about 66,459 (265)

Extending Excitation Time for Detonation Prevention: Mixture Effect in Dimethyl Ether Auto‐Ignition

open access: yesInternational Journal of Chemical Kinetics, Volume 57, Issue 10, Page 589-606, October 2025.
ABSTRACT Undesired detonation development is an obstacle in the development of modern combustion systems based on auto‐ignition. Excitation time is one of two time scales that affect detonation development. It describes the time interval, during which heat is released.
Lisa Zander, Neda Djordjevic
wiley   +1 more source

Gneises bandeados paleoproterozoicos (~1.76-1.73 Ga) de la Zona Canteras-Puerto Peñasco: Una nueva ocurrencia de rocas de basamento tipo Yavapai en el NW de Sonora, México

open access: yes, 2009
La Zona Canteras-Puerto Penasco, conocida anteriormente como Seven Hills, esta localizada aproximadamente a 20 km al ENE de Puerto Penasco en el NW de Sonora, Mexico.
H. Arvizu   +7 more
semanticscholar   +1 more source

Using Environmental DNA Sampling for Simultaneous Detection of Hosts and Their Pathogens: A Case Study With the Critically Endangered Frog Genus Atelopus

open access: yesAnimal Conservation, Volume 28, Issue 5, Page 663-674, October 2025.
Environmental DNA is a powerful tool for simultaneous detection of rare species and their pathogens. We confirmed the presence of Atelopus at multiple sampling locations and found that the concentration of the amphibian pathogen Bd in eDNA samples was correlated with stream characteristics and the pathogen load of the amphibian community.
Jamie Voyles   +6 more
wiley   +1 more source

Localizacion de canteras de materiales no tradicionales en la arquitectura de Madrid: la Cripta de la Catedral de Santa María la Real de la Almudena

open access: yes, 2004
The combination between petrological data and historical documentation sources is necessary to establish an accurate methodology for the location of the original quarries of the stony materials used in a determinate historical building.
Miguel Gómez-Heras, R. González
semanticscholar   +1 more source

Influencia de la temperatura, tiempo y contenido de materiales deletéreos en el comportamiento de los agregados frente a la reactividad alcalina potencial [PDF]

open access: yes, 1989
Se analizaron agregados finos de diferentes canteras, de reactividad conocida, utilizando el método de ensayo químico (IRAM 1650), modificando variables tales como temperatura, tiempo de reacción y contenido de materiales deletéreos para determinar la ...
Maiza, Pedro, Marfil, Silvina Andrea
core  

eDNA Metabarcoding to Monitor Fish Communities in a Large River Floodplain

open access: yesEnvironmental DNA, Volume 7, Issue 5, September–October 2025.
Comparing eDNA metabarcoding with electrofishing in the Lake St. Pierre floodplain, we found that both methods detected similar dominant species but revealed differences in overall community composition. Each method captured sector‐driven patterns in fish communities, while land use played a weaker role.
Louis Astorg   +7 more
wiley   +1 more source

Los jóvenes y su sentido de la vida [PDF]

open access: yes, 2005
Los jóvenes buscan un sentido, pero desde sí mismos. Han trasladado los muebles de la vieja casa tradicional y, por el momento, los tienen almacenados en el pasillo de su nuevo espacio mental sin saber cómo colocarlos en los distintos compartimentos ...
Arroyo Menéndez, Millán   +1 more
core  

Role of Agriculture Extension and Rural Advisory Services in Strengthening Climate‐Smart Agricultural System: A Systematic Review

open access: yesJournal of Sustainable Agriculture and Environment, Volume 4, Issue 3, September 2025.
ABSTRACT Introduction Agriculture Extension and Rural Advisory Services (AERAS) are the powerhouse of sustainable agricultural development. Conversely, Climate‐Smart Agriculture is the core of farm sustainability and food security. The study aimed at investigating the role of AERAS in strengthening climate‐smart agricultural system.
Md Maruf Billah   +4 more
wiley   +1 more source

Árbol de excavabilidad para elegir método de arranque en canteras de áridos de la construcción: yacimiento El Cacao

open access: yesMinería y Geología, 2014
Este trabajo presenta un procedimiento para seleccionar el método más racional de excavación de la roca para las canteras de materiales de construcción en Cuba.
Naisma Henández-Jatib   +3 more
doaj  

Pagus Marmorariensis, mons Mariorum, statio serrariorum Augustorum y canteras de Almadén de la Plata. Algunas precisiones [PDF]

open access: yesBoletín del Museo Arqueológico Nacional, 2018
Se exponen en este artículo algunas precisiones sobre aspectos concretos de las canteras romanas de Almadén de la Plata, centrados en las relaciones que estas pudieron tener con el pagus Marmorariensis, el intento de identificarlas con el Mons Mariorum ...
Aurelio Padilla-Monge
doaj  

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