Results 121 to 130 of about 264,999 (349)

Study on the Particle Size Distribution of Geoelectrochemical Anomaly Materials in Soils from the Tongjiangling Copper Deposit, Jiangxi Province

open access: yesApplied Sciences
The geoelectrochemical extraction method is effective for locating deep concealed deposits, but research on the particle size distribution of its anomaly-causing substances remains limited.
Wei Ye   +9 more
doaj   +1 more source

Interplanetary frontiers: terraforming from an invasion science perspective

open access: yesOikos, EarlyView.
The pursuit of a multi‐planetary existence represents one of humanity's greatest frontiers. If applied justly, it offers an opportunity to extend its civilization's lifespan amid escalating sustainability crises on Earth. One approach increasingly gaining traction is terraforming, a hitherto theoretical ecological and evolutionary experiment revolving ...
Teun Everts   +2 more
wiley   +1 more source

Application of Comprehensive Electromagnetic Methods in the Search for Copper-Nickel Polymetallic Ores in Shallow-Covered Areas: A Case Study of The Jing'erquan Area in the East Tianshan Mountains of Xinjiang

open access: yesCT Lilun yu yingyong yanjiu
The Jing'erquan area in the East Tianshan Mountains of Xinjiang is characterized by shallow coverage, posing challenges to surface geological exploration for ore bodies.
Shihao JIA   +4 more
doaj   +1 more source

Paradox Basin source rock, southeastern Utah : organic geochemical characterization of Gothic and Chimney Rock units, Ismay and Desert Creek zones, within a sequence stratigraphic framework

open access: yes, 1995
textThe Chimney Rock and Gothic units of the Pennsylvanian Paradox Formation have long been considered source rocks for the rich hydrocarbon fields of southeastern Utah.
Tischler, Keith Louris
core  

Geochemical controls on fluoride concentrations in natural waters fromthe middle Loess Plateau, China

open access: yes, 2015
Water resources play a key role in the development of regional economy and stability of ecosystem in the middle Loess Plateau, China. Spatial variability of fluoride (F−) and its geochemical control with other dissolved ions in the middle Loess ...
Xiao,J(Xiao,Jun)[1,2]   +2 more
core   +1 more source

Phosphorus limits the growth of bacterial and eukaryotic primary producers in recently deglaciated High Arctic soils

open access: yesOikos, EarlyView.
Glaciers are receding at unprecedented rates worldwide, exposing large areas of barren sediment that are quickly colonized by microbes. Nutrient availability is a critical driver of early ecosystem succession, but in the High Arctic its role has remained uncertain.
Steven K. Schmidt   +12 more
wiley   +1 more source

Past, present and future of local crop evolution

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Promoting agrobiodiversity is a promising strategy for mitigating the negative effects of climate change on global food security. We highlight the central role evolutionary processes play in harnessing the potential of local crops by integrating genomics, archaeology, ethnobotany and traditional ecological knowledge (TEK).
Nataly Allasi Canales   +6 more
wiley   +1 more source

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy   +4 more
wiley   +1 more source

Quantifying Daily Vertical Heat Flux in the Loop Current System: A Quasi‐Lagrangian Assessment of Frontal Hotspots

open access: yesGeophysical Research Letters
Vertical heat exchange within the upper ocean critically influences regional climate but remains difficult to observe directly. In the Gulf of Mexico, the Loop Current and its associated eddies significantly enhance this exchange.
Sakib Mahmud   +4 more
doaj   +1 more source

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