Results 171 to 180 of about 1,738,277 (218)

Essential Oils as a Source of Anticancer Molecules: Critical Assessment of Current Evidence and Methodological Limitations-A Systematic Review. [PDF]

Int J Mol Sci
Spigarelli R, Valerii MC, Bernacchi A, Dussias NK, Mbirki L, Spisni E.   +5 more
europepmc   +1 more source

Ancient use and long-distance transport of the Four Corners Potato (Solanum jamesii) across the Colorado Plateau: Implications for early stages of domestication. [PDF]

PLoS One
Louderback LA, Wilson C, Wilks SL, Joyce K, Rickett S, Bamberg J, Del Rio A, Pavlik BM.   +7 more
europepmc   +1 more source

A high-resolution, multi-method palaeoenvironmental record from pan sediments at Maralaleng Pan, southern Kalahari basin. [PDF]

PLoS One
Faul I, Grandfield T, Green C, Hensel-Karamalakidou EA, Segadika P, Winterhalder R, Mothulatshipi S, Dreibrodt S, Andersen N, Frouin M, Ecker M.   +10 more
europepmc   +1 more source

Braiding archaeology, geomorphology and indigenous knowledge to improve the understanding of local-scale coastal change. [PDF]

Camb Prism Coast Futur
Jones BD, Dickson ME, Ford M, Hikuroa D, Ryan E, Carrington A, Chetham J.   +6 more
europepmc   +1 more source

Bed and suspended flux distribution along migrating dunes

, 2013
Naqshband, S., Ribberink, J.S., Hurther, D., Hulscher, S.J.M.H.   +3 more
openaire   +1 more source

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Migration of Barchan Dunes and Factors That Influence Migration in the Sanlongsha Dune Field of the Northern Kumtagh Sand Sea, China

Geomorphology, 2021
Abstract The Sanlongsha dune field, on the northern edge of China's Kumtagh Sand Sea, is a large area with strong winds, causing rapid dune migration and evolution of dune morphology. By combining remote sensing images with field monitoring, we analyzed seasonal and annual migration of the barchan dunes and the factors that influence this migration ...
Guangqiang Qian, Zhibao Dong, Zhuanling Yang   +2 more
exaly   +2 more sources

On the Shape and Migration Speed of a Proto-Dune

Earth Surface Processes and Landforms, 2002
AbstractThe shape and migration speed of a proto‐dune are mathematically discussed. The migration speed of a low dune is shown to be inversely proportional to its wind‐directional length. Proto‐dunes, whose wind‐directional lengths are about 10 m, are expected to migrate at finite speeds. Copyright © 2002 John Wiley & Sons, Ltd.
Hiraku Nishimori, Hiroshi Momiji, Steven R Bishop   +2 more
exaly   +2 more sources

Gravitational Circulation as Driver of Upstream Migration of Estuarine Sand Dunes [PDF]

Geophysical Research Letters, 2021
AbstractSand dunes are large‐scale rhythmic bed patterns commonly occurring in sandy shelf seas, estuaries and rivers. Field observations of sand dunes in the Gironde estuary (France) have suggested that the gravitational circulation may cause seasonal reversal of asymmetry, which is linked to migration direction.
Theo Gerkema, Pieter C. Roos, Suzanne Hulscher   +2 more
exaly   +3 more sources

Elongation and Migration of Sand Dunes

Geomorphology, 2004
Two distinct processes are known to act on dynamic dunes, the process of migration by erosion on the windward side and deposition on the lee side, typical for transverse dunes, and the process of elongation typical for linear dunes. These two processes are determined by wind direction relative to the dune alignment.
Dan Blumberg, Haim Tsoar
exaly   +2 more sources

The dynamic characteristics and migration of a pyramid dune

Sedimentology, 2005
AbstractThe results of wind tunnel experiments and field observations show that when the intersection angle between airflow direction and dune crest (ridge) line is > 30°, a reverse vortex is formed. Because of the convergence of sand streams from the windward and lee slopes at the crest, sand accumulates in the crestal region, causing vertical ...
TAO WANG, WEIMIN ZHANG, ZHIBAO DONG, JIANJUN QU, ZHEFAN JING, WANFU WANG, JIANMIN FENG   +6 more
openaire   +1 more source