Results 161 to 170 of about 79,104 (288)

An unsupervised machine learning approach to iron meteorite classification

Meteoritics &Planetary Science, EarlyView.
Abstract Iron meteorites are usually classified manually using bivariate elemental plots. This study extends iron meteorite classification into multi‐element space. We present a computational method for the classification of iron meteorites by applying unsupervised machine learning using density‐based cluster analysis.
Louis‐Alexandre Lobanov, Hilary Downes
wiley   +1 more source

Seasonal hydrochemical characteristics of spring water in Southern Poland: integrating geochemical modeling, health risk analysis and mitigation strategies. [PDF]

Sci Rep
Eid MH, Saeed O, Szűcs P, Ruman M, Dąbrowska D, Nourani V.   +5 more
europepmc   +1 more source

Eddies and upper-ocean nutrient supply [PDF]

, 2008
Oschlies, Andreas
core   +1 more source

Tree stem methane emissions are regulated by site‐level biogeochemistry over species identity in Amazon floodplain forests

New Phytologist, EarlyView.
Summary Tree stems in Amazonian floodplains emit substantial methane (CH4), yet controls on emission variability remain unclear. Emissions span orders of magnitude between várzea (nutrient‐rich) and igapó (nutrient‐poor) forests and among trees, suggesting controls beyond flooding.
Holly R. Blincow, Niall P. McNamara, Dafydd M. O. Elias, Carla Gomez, Jack Lamb, Rodrigo Nunes de Sousa, Darlene Gris, Leonardo Pequeno Reis, Alison M. Hoyt, Sunitha Rao Pangala   +9 more
wiley   +1 more source

Assessing surface water quality in Hungary's Danube basin using geochemical modeling, multivariate analysis, irrigation indices, and Monte Carlo simulation. [PDF]

Sci Rep
Saeed O, Székács A, Jordán G, Mörtl M, Abukhadra MR, El-Sherbeeny AM, Szűcs P, Eid MH.   +7 more
europepmc   +1 more source

Photosynthetic primary production in the Mesoproterozoic

New Phytologist, EarlyView.
Summary The Mesoproterozoic atmosphere had more CO2 and less O2 than at present. While the upper ocean was oxygenated, the deeper ocean was euxinic or ferruginous. Primary production was performed by Chlorobia, Cyanobacteria, Proteobacteria, and Archaeplastida.
Patricia Sánchez‐Baracaldo, John A. Raven   +1 more
wiley   +1 more source

Hydrogeochemical characteristics and air quality risks associated with gold mining operations in Egypt using geochemical modeling and risk indices. [PDF]

Heliyon
Ata AAEM, Aly MH, Hussein H, Eid MH, Abukhadra MR, El-Sherbeeny AM, Bellucci S, Gad M.   +7 more
europepmc   +1 more source

Field‐based evaluation of glass cullet as a supplementary sediment source for coastal restoration

Restoration Ecology, EarlyView.
There is an ever‐increasing demand for sand to support projects like beach nourishment and dune restoration, but dredging and mining sand causes environmental damage. Demonstrating the environmental and ecological compatibility of crushed and ground glass known as cullet to support coastal restoration projects could simultaneously divert waste from ...
Lily S. Pfeifer, Charles A. Schutte
wiley   +1 more source

Geochemical Barrier for Accumulation of Ions of Hard, Toxic and Radioactive Metals [PDF]

, 2014
Morozova, T.I., Rodinovich, Yevgeny, Savelieva, T.S.   +2 more
core  

Impacts of reclamation approaches on plant establishment in an arid environment during copper mine revegetation

Restoration Ecology, EarlyView.
Abstract Introduction Revegetation using native vegetation is a commonly used technique to reclaim landscapes degraded by mining activities. Revegetation efforts in the arid Southwestern United States face physical, geochemical, hydrological, and biological challenges unique to drylands.
Sierra T. Lauman, Catherine G. Fontana, Elise S. Gornish, Julia W. Neilson   +3 more
wiley   +1 more source