Results 51 to 60 of about 94,025 (246)

Investigation of the Dynamic Evolution Mechanism of Bed Separation in Karst Aquifers and Risk Assessment of Water Inrush

open access: yesEnergy Science &Engineering, EarlyView.
This study reveals the temporal and spatial evolution law of roof separation under the karst aquifer and the dynamic water inrush mechanism of roof separation. The FAHP–EWM–CRITIC combination weighting method was established to obtain the risk zoning of bed separation water inrush in a karst landform mining area. ABSTRACT Coalfields in northern Guizhou
Xilong Zhu   +5 more
wiley   +1 more source

Mapping Mountain Landforms and Its Dynamics: Study Cases in Tropical Environments

open access: yesApplied Sciences, 2022
High mountain areas are critical for water security and natural hazard dynamics, as well as glacier and ecosystem conservation in a warming world. We present a brief account of the methodological steps for geomorphological mapping in mountain areas ...
Néstor Campos   +2 more
doaj   +1 more source

Physicochemical Properties and Antioxidant Activity of Apocynum Honey in Different Regions of Xinjiang

open access: yesFood Chemistry International, EarlyView.
ABSTRACT In this study, honey produced from Apocynum venetum L. was collected from BC (Bachu County), SY (Shaya County), and YL (Yuli County) in Xinjiang. The basic physical and chemical properties of the honey, and the contents of total phenols, total flavonoids, and amino acids were analyzed, and 16 types of polyphenols were quantified using triple ...
Na Zhang   +5 more
wiley   +1 more source

An Action Research Study on Teaching the Landform Concepts in a Fifth Grade Social Studies Course

open access: yesInternational Journal of Contemporary Educational Research, 2022
This study aims to find out the effect of activities and practices on concept education to help carry out activities to teach these concepts more effectively and permanently, and determine student preconceptions about the concepts related to the ...
Yusuf İNEL, Emrah URHAN
doaj   +1 more source

Does Palsa Thaw in Northern Finland Contribute to Remobilisation of Metals Accumulated in Peat Into Surface Waters?

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Permafrost is rapidly degrading in the sporadic zone, including palsa mires in Scandinavia. Peatlands in the area have likely accumulated heavy metals from atmospheric deposition of industrial contaminants in the wider region. As the palsa mire chemical composition is not well known, and in other permafrost regions the permafrost thaw may ...
Joanna Katarzyna Jóźwik   +7 more
wiley   +1 more source

Geoheritage Value of Three Localities from Kislovodsk in the Southern Central Ciscaucasus: A Resource of Large Resort Area

open access: yesGeosciences
Many geographical domains possess notable geological and geomorphological features, which are yet to be characterized comprehensively in terms of geoheritage. The present study focuses on the Kislovodsk area, which is situated in the southern part of the
Natalia N. Yashalova, Dmitry A. Ruban
doaj   +1 more source

GEOMORPHOLOGICAL STRUCTURE OF LANDFORM CHARACTERISTICS AS A REFERENCE FOR DEVELOPMENT RECOMMENDATIONS IN WADI RUM PROTECTED AREA [PDF]

open access: yesGeo Journal of Tourism and Geosites
This research will look at numerous fundamental geomorphology ideas, with a focus on geomorphological systems. Geomorphology researchers use a variety of landscape evolution models, with the assumption that unstable landscape equilibria evolve quickly.
Omar JAWABREH   +4 more
doaj   +1 more source

Taxonomy and diversity of Marcgraviaceae, north of the São Francisco river, northeast Brazil

open access: yesNordic Journal of Botany, EarlyView.
This study provides a comprehensive assessment of Marcgraviaceae species diversity north of the São Francisco river in northeastern Brazil, analyzing species richness and distribution patterns across 384 000 km² of phytogeographic domains. Through field collections, herbarium studies (both physical and digital), and detailed morphological analyses, we ...
Thales Carvalho   +4 more
wiley   +1 more source

A New High-Resolution Map of World Mountains and an Online Tool for Visualizing and Comparing Characterizations of Global Mountain Distributions

open access: yesMountain Research and Development, 2018
Answers to the seemingly straightforward questions “what is a mountain?” and “where are the mountains of the world?” are in fact quite complex, and there have been few attempts to map the mountains of the earth in a consistent and rigorous fashion ...
Roger Sayre   +11 more
doaj   +1 more source

Symbolic landforms created by ancient earthworks near Lake Titicaca [PDF]

open access: yes, 2010
Interesting landforms created by an ancient network of earthworks are shown, using Google satellite imagery enhanced by an image processing. This network covers a large part of the land near the Titicaca Lake.
Sparavigna, Amelia Carolina
core   +1 more source

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