Results 51 to 60 of about 249,220 (266)

Al-kut Dam Sediments Content of Some Heavy Metals and Its Relationship with Pollution [PDF]

open access: yesAl-Qadisiyah Journal For Agriculture Sciences, 2017
This study has been carried out in Alkut city the center of Wasit province which is located about 180 km south of the capital Baghdad on one from the most important dams constructed on the river Tigris called Alkut Dam . Four pedons have been selected in
Hashim H. Kareem Aldhahi   +2 more
doaj   +1 more source

River sediments [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012
Abstract River history is reflected in the nature of the sediments carried and deposited over time. Using examples drawn from around the world, this account illustrates how river sediments have been used to reconstruct past environmental changes at a variety of scales in time and space.
openaire   +3 more sources

Heavy metal distribution in recent sediments along the Tietê River basin (São Pauro, Brazil) [PDF]

open access: yes, 2011
The distribution of heavy metals in recent sediments deposited along the Tietê River, a highly polluted river in southeast region of Brazil was studied.
Probst, Jean-Luc   +2 more
core  

Short-term fate of phytodetritus in sediments across the Arabian Sea Oxygen Minimum Zone [PDF]

open access: yes, 2007
The short-term fate of phytodetritus was investigated across the Pakistan margin of the Arabian Sea at water depths ranging from 140 to 1850 m, encompassing the oxygen minimum zone (~100–1100 m).
Middelburg, J.J.   +19 more
core   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Analysis of the synchronous rise of water level in the Tangshan fault zone

open access: yesScientific Reports
Since 2019, a synchronous and abnormal upward trend in water levels has been observed in the Tangshan and Majiagou observation wells, located within the Tangshan fault zone, coinciding with three earthquakes of magnitude 4.0 or higher in the Tangshan ...
Jie Tang   +5 more
doaj   +1 more source

METALS FORMS DISTRIBUTION IN LAKES SEDIMENTS OF NATURAL AND URBAN AREAS OF THE REPUBLIC OF TATARSTAN

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016
The paper contains the comparative assessment of content levels and the revealed patterns of total and mobile forms of metals (Cd, Pb, Co, Cu, Ni, Zn, Cr, Mn, Fe) distribution in the bottom sediments of natural (Volga-Kama Nature Reserve) and urbanized ...
Vsevolod Valiev   +5 more
doaj   +1 more source

Speciation analysis of sediments from Kampinos National Park [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2014
[b]Abstract[/b]. The experimental part covers the description of the sampling places of sediments which were taken from Kampinos National Park and the description of their preparation for analysis.
Jakub Pawłowski   +3 more
doaj   +1 more source

Enrichment of Metals in the Sediments of an Industrially Impacted Estuary: Geochemistry, Dispersion and Environmental Considerations

open access: yesApplied Sciences, 2022
The city of Avilés is one of the most industrialized cities in the north of Spain and, accordingly, its estuary and coastal area have been subjected to great anthropic impacts in the last 100 years.
Mario Mangas-Suarez   +6 more
doaj   +1 more source

α‐Synuclein aggregation landscape from phase separation to neurotoxic intermediates

open access: yesFEBS Letters, EarlyView.
Alpha‐synuclein aggregation in Parkinson's disease involves a complex landscape of transient intermediates, including oligomers, fibrils and liquid–liquid phase separation (LLPS). A view is emerging in which LLPS maturation into solid‐like condensates may contribute to the formation of neurotoxic species.
Silvia Arino   +2 more
wiley   +1 more source

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