Results 61 to 70 of about 305,177 (315)
Mining-Geological and Economic Characteristics of Lead-Zinc Ore Deposits in the Russian Arctic
Арктика и Север, 2022 The article analyzes the possibilities for prospecting, evaluation, exploration and extraction of zinc and lead deposits in the Arctic. The reserves and resources of zinc and lead deposits and ore occurrences on the Novaya Zemlya archipelago, on Vaygach ...
Sergey V. Belov +2 more
doaj +1 more source
A four stage evolution of the White Channel gravel: Implications for stratigraphy and palaeoclimates [PDF]
, 2014 Although the White Channel gravel (WCG) of the Klondike district, Yukon, contains gold placers which have been exploited for over a century, few sedimentological studies have been undertaken.
Chapman, Robert +3 more
core
De Rerum Natura: How Do Halide Perovskites Self‐Heal From Damage?
Advanced Materials, EarlyView.How can lead‐halide‐perovskites self‐heal after damage from light, heat, mechanical strain, or radiation? We show that reversible chemical defects underly performance losses and recovery, highlighting the roles of halide and proton migration, redox‐driven reactions, and acid‐base equilibria.
Davide Raffaele Ceratti +2 more
wiley +1 more source
Oxygen Evolution Reaction Catalysts for Acidic‐Media CO2 Electrolyzers
Advanced Materials, EarlyView.Acidic‐media CO2 electroreduction (CO2R) could decarbonize chemical production, despite relying on rare‐earth elements for anodic oxygen evolution reaction (OER). Transferring the learnings from mature sister technologies (water electrolysis) could accelerate technological development.
Mingcheng Huang, Adnan Ozden
wiley +1 more source
Effects of elevated temperature on physical and mechanical properties of carbonate rocks in South-Southern Nigeria [PDF]
, 2018 Purpose. Limestone and marble are carbonate rocks with several structural and engineering applications. The physical and mechanical properties of the rocks are fundamental as they determine their suitability for various use.
Idris, M.A.
core +1 more source
Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering
Advanced Photonics Research, Volume 6, Issue 5, May 2025.Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik +7 more
wiley +1 more source
A forefront correction of the driving work ceiling area in the Novaky mine conditions [PDF]
Acta Montanistica Slovaca, 2006 Underground working are unthinkable interface with rocks environs in which are they situated. The age, origin and the rocks type, which are generating a rock massif markedly influence the course and safeness of mining works.
Tibor Sasvári +2 more
doaj
Ciência & Educação, 2005 A literatura de ensino de Ciências e de Geologia assinala a importância de integrar aspectos históricos e filosóficos ao processo educacional (HPS). Denominamos isso de abordagem metodológica para ensino de ciências (MAS). De outro lado, vários trabalhos
Pedro Wagner Gonçalves
doaj +1 more source
Advanced Science, EarlyView.Bacterial α‐diversity decreases, but stochasticity and community stability increase across the 15 m‐depth vertical profiles and along the degraded gradient within the active layer. The abundance and interaction of core taxa mainly control community stability in the active and permafrost layers, respectively.
Shengyun Chen +13 more
wiley +1 more source
Scale-dependence of lithological control on topography: Bedrock channel geometry and catchment morphometry in western Scotland [PDF]
, 2010 We propose that a scale-dependent topographic signature of erodibility arises due to fluvial and glacial erosion acting on different parts of the landscape at different times.
Bishop, P. +3 more
core +3 more sources