Results 101 to 110 of about 43,435 (267)
Land Degradation &Development, EarlyView.ABSTRACT Mining in the karst regions of southwest China threatens ecosystem stability and accelerates land degradation. Regional evaluation rarely distinguishes between degradation pathways in open‐pit and underground operations, due to spatial heterogeneity and geomorphological confounding effects.
Xiaofu Chen +5 more
wiley +1 more source
Contribution of ultrafine particles to alkalinity in a limestone‐treated waterbody
Limnology and Oceanography: Methods, EarlyView.Abstract While it is well recognized that suspended particles can bias titration‐based total alkalinity (TA), whether addition of minerals for alkalinity enhancement introduces systematic TA artifacts remains poorly quantified. To address this gap, we quantified the contribution of ultrafine particles (< 0.2 μm) to TA titration introduced by limestone (
Teresa G. Schwemmer +2 more
wiley +1 more source
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT Swelling of clay‐sulfate rocks is a concern in geotechnical engineering that can damage infrastructure. In the historic town of Staufen in southwest Germany, geothermal drilling into a swellable anhydrite‐bearing clay formation resulted in water inflow and subsequent swelling, triggering ground heave and damage to more than 250 houses.
Reza Mahmoudi Kouhi +4 more
wiley +1 more source
Petrocosmea wentsaii sp. nov. (Gesneriaceae) from Guizhou, China
Nordic Journal of Botany, EarlyView.Petrocosmea wentsaii M.Q. Han, Miao.M. Wang & Yan Liu, a new species from Guizhou, China, is described and illustrated. Petrocosmea wentsaii was found on damp walls in a huge limestone cave. It is most similar to Petrocosmea hexiensis S.Z. Zhang & Z.Y. Liu in the conformation of the corolla.
Miao‐Miao Wang +3 more
wiley +1 more source
Polymer International, EarlyView.This study investigates the influence of waste eggshell powder on the water absorption and mechanical properties of jute fiber‐reinforced epoxy composites. Optimal eggshell filler content (2 wt%) significantly enhances composite performance by reducing water absorption and improving mechanical properties.
Safak Yildizhan +4 more
wiley +1 more source
Disposition Model for Permafrost Degradation in Mountainous Regions
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Permafrost is a widespread thermal phenomenon in Arctic and high mountain regions that, in combination with steep terrain, exerts a key control on slope stability. Its degradation in response to climatic warming can modify the likelihood and timing of rockfall, debris flow and related mass movements. Robust information on the current state and
Peter Mani +4 more
wiley +1 more source
Permafrost 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
Repeated Pleistocene Permafrost Episodes in the Western Pannonian Basin
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Concerning the study of past periglacial processes, the Pannonian Basin is a key area as it contains the southernmost frost polygons found in Central Europe. The presence or absence of permafrost is still, however, a matter of debate, and data on the timing of frost action are also scarce.
Krisztina Sebe +5 more
wiley +1 more source
Permafrost and Periglacial Processes, EarlyView.ABSTRACT Freeze–thaw processes cause periglacial creep (otherwise known as solifluction) which forms solifluction lobes. These are lobate features characterized by a steep riser (front) and a smooth tread (body). Despite the widespread occurrence of these lobes, the controls on their morphometry remain poorly understood. Research into solifluction lobe
Jil S. van Etten +2 more
wiley +1 more source