Results 91 to 100 of about 21,910 (245)

Understanding the effects of patch‐burn grazing management on aboveground grassland invertebrate biodiversity

open access: yesOikos, EarlyView.
Landscape heterogeneity is widely recognized as a driver of biodiversity, yet its consequences for above‐ground, foliage‐dwelling insect communities under active grassland management remain underexplored. Patch‐burn grazing (PBG), which rotates fire across patches within a grazed landscape, is designed to promote spatial and temporal heterogeneity by ...
Zachary L. T. Bunch   +5 more
wiley   +1 more source

Handbook of Online Learning Innovations in Higher Education and Corporate Training

open access: yesInternational Review of Research in Open and Distributed Learning, 2003
Douglas Shale
doaj   +1 more source

Microscopic seepage simulation of gas and water in shale pores and slits based on VOF

open access: yesOpen Physics
The microscopic pore-fracture structure and wettability have a significant influence on the two-phase seepage of shale gas and water. Due to the limitation of experimental conditions, the seepage patterns of gas and water in shale pores and slits under ...
Wang Benqiang   +5 more
doaj   +1 more source

Permafrost Distribution in the Canadian Rockies: Key Variables Influencing Patch‐Scale Variability

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT The spatial distribution of permafrost in mountainous regions is influenced by various factors such as topography, climate, vegetation, and substrate. Despite the existence of comprehensive permafrost maps at national and global levels, they fail to accurately represent the patch‐scale (e.g., < 25 m) permafrost distribution in characteristic ...
Gerardo Zegers   +2 more
wiley   +1 more source

THE PELLETS APPLICATION IN LABORATORY RESEARCHING OF INHIBITIVE MUD/SHALE INTERACTION

open access: yesRudarsko-geološko-naftni Zbornik, 2012
Wellbore instability appears to be a serious problem during drilling process through shale. Shales instability cause basically comes out of its mineralogical composition (especially clay minerals content) and physico-chemical properties.
Borivoje Pašić
doaj  

Deciphering Freeze–Thaw Dynamics In Rockwalls: A Novel Approach for High Accuracy Regional‐Scale Modeling

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Using a large and novel array of instruments on five rockwalls in northern Gaspesia, their respective surface energy balances were calculated and their thermal regimes were measured and modeled to depths exceeding the seasonal frost penetration.
Tom Birien, Francis Gauthier
wiley   +1 more source

Prediction of Fractal Dimension in Shale CT and its Robustness to Interference Based on Convolutional Neural Networks

open access: yesTaiyuan Ligong Daxue xuebao
[Purposes] The development of shale oil and gas often requires a thorough understanding of the internal pore-fracture distribution patterns within shale reservoirs to optimize development strategies and enhance production capacity.
SUN Dingwei   +4 more
doaj   +1 more source

The mechanical behavior of shales [PDF]

open access: yes, 2019
The thesis comprises three experimental studies, which were carried out to unravel the short- as well as the long-term mechanical properties of shale rocks. Short-term mechanical properties such as compressive strength and Young’s modulus were taken from recorded stress-strain curves of constant strain rate tests.
openaire   +3 more sources

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson   +5 more
wiley   +1 more source

Experimental study on fractures quantitative characterization of shale during uniaxial compression

open access: yesFrontiers in Earth Science
IntroductionFractures are crucial to the development of shale oil and gas because they operate as a seepage pathway. The key to ensuring effective development is the fractures strong connection.
Liping Zhao, Hongjian Zhu
doaj   +1 more source

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