Results 51 to 60 of about 3,735,810 (289)

Dynamics of fluvial fine sediment transfer in the River Esk, North Yorkshire, UK [PDF]

open access: yes, 2006
A full understanding of the complexities of fluvial suspended sediment dynamics requires a holistic approach. The study presented here addresses fine sediment transfer in the River Esk catchment, which is suffering from the adverse effects of increased ...
Mills, Carolyn
core  

Elucidating intra-storm variations in suspended sediment sources using a Bayesian fingerprinting approach

open access: yes, 2021
There is an increasing need for reliable information on the origin of fine-grained sediment transported by river systems, but critically, at temporal scales that reflect the timing and pattern of sediment mobilization and delivery in response to ...
Collins, A. L.   +3 more
core   +1 more source

The erodibility of fine sediment deposits in lowland chalk streams [PDF]

open access: yes, 2011
PhDLowland chalk streams in the UK are experiencing increased deposition of fine sediment due to changes in land-use practices, channel modifications, and groundwater abstraction.
Grabowski, Robert Carl
core   +4 more sources

Sediment Characteristics and Sources Tracing of Warping Dam in Sanggan River Basin

open access: yesShuitu Baochi Xuebao
[Objective] This study intends to explore the main source of sediment and the evolution of erosion and sediment yield in Sanggan River Basin. [Methods] A typical warping dam in Gaoqiang Township, Yangyuan County was selected as the research object.
XIE Xiaojian   +4 more
doaj   +1 more source

Landslides and Gullies Interact as Sources of Lake Sediments in a Rifting Context: Insights from a Highly Degraded Mountain Environment

open access: yesGeosciences, 2022
Like many other lakes in the world, the interconnected Abaya and Chamo lakes in the Southern Main Ethiopian Rift are affected by rapid sediment accumulation.
Liuelsegad Belayneh   +7 more
doaj   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Use of a submersible spectrophotometer probe to fingerprint spatial suspended sediment sources at catchment scale [PDF]

open access: yes, 2023
Sediment fingerprinting is used to identify catchment sediment sources. Traditionally, it has been based on the collection and analysis of potential soil sources and target sediment.
Núria Martínez-Carreras   +14 more
core   +1 more source

Identification of Sediment Sources Based on Grain Size of Soil

open access: yesShuitu baochi yanjiu, 2023
[Objective] The research aims to reveal the influence of wind action on water erosion in the wind-water composite erosion area of the Loess Plateau, provide an effective method support for the identification of erosion material sources with different ...
LI Xiaozheng   +5 more
doaj  

Spatial Variation in Sediment Organic Carbon Distribution across the Alaskan Beaufort Sea Shelf

open access: yesEnergies, 2017
In September 2009, a series of sediment cores were collected across the Alaskan Beaufort Sea shelf-slope. Sediment and porewater organic carbon (OC) concentrations and stable carbon isotope ratios (δ13C) were measured to investigate spatial variations in
Richard B. Coffin   +4 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

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