Results 61 to 70 of about 15,532 (257)

Deglaciation of the Burren glacio‐karst, western Ireland, during Termination 1: Implications for North Atlantic climate and karstification

Journal of Quaternary Science, EarlyView.
Abstract The Burren uplands in western Ireland form one of the most extensive and best‐preserved examples of glacio‐karst in Europe. Subsumed by the Irish ice sheet during the Late Pleistocene, granite erratic boulders and in situ silica veins in the limestone bedrock provide a rare opportunity to reconstruct the timing and rate of deglaciation ...
Gordon Bromley, Colin Bunce, Brenda Hall, Aaron Putnam, Frank McDermott   +4 more
wiley   +1 more source

Geochronological reconstruction of the Lateglacial deglaciation in the Arve Valley (Northern French Alps)

Journal of Quaternary Science, EarlyView.
ABSTRACT The timing and spatial patterns of glaciers retreat in the Northern French Alps during the Lateglacial (19.0–11.7 ka) remain debated, reflecting discrepancies among available chronological data sets. The complex interactions between major glaciers, such as the Rhône and Arve glaciers to the north and the Isère glacier to the south, represent a
Quentin Portal, Christian Crouzet, Jean‐François Buoncristiani, Julien Carcaillet   +3 more
wiley   +1 more source

Decay and durability of building stones in urban environments

Materiales de Construccion, 1998
This paper studies the effect of some pollutant agents in urban environments -gaseous SO2, acid rain and solid particles- on carbonate and siliceous building stones with different petrophysic characteristics.
C. M. Grossi, R M. Esbert, F. Díaz-Pache   +2 more
doaj   +1 more source

Behavioral responses of black bears to human presence and infrastructure in Yosemite National Park

The Journal of Wildlife Management, EarlyView.
Using GPS collar data from black bears in Yosemite National Park, we examined how bear spatiotemporal activity in relation to human development shifted during the COVID‐19 park closure in 2020. In the absence of visitors, bears maintained consistent landscape‐scale space use but altered fine‐scale spatial and temporal behaviors.
Jennifer R. Green, Caitlin Lee‐Roney, Kathleen Patrick, Rachel Mazur, Robert Lester, Erin Degutis, Ryan Leahy, Tal Avgar, Naomi B. Schwartz, Kaitlyn M. Gaynor   +9 more
wiley   +1 more source

Spalling characteristics of high-temperature treated granitic rock at different strain rates

Journal of Rock Mechanics and Geotechnical Engineering
The dynamic spalling characteristics of rock are important for stability analysis in rock engineering. This paper presented an experimental investigation on the dynamic spalling characteristics of granite with different temperatures and strain rates.
L.F. Fan, Q.H. Yang, X.L. Du
doaj   +1 more source

Theory of Time-Temperature-Stress Equivalent Principle Based on Schapery Equation and Its Application on Granite

Medžiagotyra, 2014
The time-temperature-stress equivalent (TTSE) principle refers to the phenomenon that the time-dependent mechanical properties of materials rely on the variations of temperature and stress level.
Yuanguang ZHU, Quansheng LIU, Bin LIU, Jingdong JIANG   +3 more
doaj   +1 more source

Anaerobic Corrosion Phenomena of Cast Iron and Copper in Artificial Groundwater at Elevated Temperature

Materials and Corrosion, EarlyView.
This study examines corrosion of copper and cast iron as candidate canister materials for high‐level radioactive waste disposal in contact with bentonite suspension. The influence of three electrolyte compositions on corrosion behavior under repository‐relevant conditions is assessed.
Louisa Panjiyar, Martin Ende, Christiane Stephan‐Scherb   +2 more
wiley   +1 more source

Geochronology and geochemistry of the Fogang granitic batholith and its implications for uranium mineralization

Frontiers in Earth Science
The E–W-striking Fogang granitic batholith represents the largest composite batholith in Guangdong Province. To date, the only known uranium deposit, the Pajiang deposit, has been identified in the southwestern portion of the Fogang granitic batholith ...
Peng Hu, Peng Hu, Peng Hu, Wei-Cheng Ding, Wei-Cheng Ding, Bin Liu, Bin Liu, Bin Liu, Bin Liu, Wen-Fang Wei, Jia-Ming Qi, Liang Qiu   +11 more
doaj   +1 more source

Enhancing Rock Strength Prediction and Features Selection by Coupling Well Log Data and Deep Learning Approaches in Reservoir Geomechanics

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Accurate rock strength parameters play a vital role in petroleum and mining operations for sustainable drilling activities, and wellbore stability analysis. This study investigates the applicability of deep learning techniques for assessing data‐driven models, and to conduct parametric sensitivity examination for feature attributes ranking to ...
Mohammad Islam Miah, Md. Shakil Rahaman, Travis Wiens   +2 more
wiley   +1 more source

Taxonomic novelties in subgenus Euphorbia (Euphorbiaceae) from South India

Nordic Journal of Botany, EarlyView.
Extensive floristic explorations throughout southern India have uncovered some noteworthy taxonomic additions within the subgenus Euphorbia (Euphorbiaceae). Three distinct taxa of Euphorbia are described and illustrated herein as E. sankarensis, E. bahalita and E. tortilis var. mysorensis.
Sarojini Devi Naidu, Raja Kullayiswamy Kusom   +1 more
wiley   +1 more source