Results 91 to 100 of about 1,259,928 (152)

Cycad forensics: tracing the origin of poached cycads using stable isotapes, trace element concentrations and radiocarbon dating techniques [PDF]

open access: yes, 2013
In South Africa, the greatest threat to cycad populations is the illegal removal of wild plants for landscaping purposes and collector's gardens, resulting in declining populations that are already threatened with extinction.
Retief, Kirsten
core   +1 more source

Stable carbon and oxygen isotopes on individual and pooled foraminifera of surface sediment samples

open access: yes, 2019
Stable carbon and oxygen isotopes on individual and pooled foraminifera of surface sediment ...
Laepple, Thomas   +9 more
core   +1 more source

Quality Control Method and Application of High-Precision Dual-Inlet Analysis for Trace Speleothem Carbonate Carbon and Oxygen Isotopes

open access: yesYankuang ceshi
Speleothems have become the fourth pillar of paleoclimate research due to their advantages of high resolution, precise chronology, and widespread terrestrial distribution.
Qingmin CHEN   +6 more
doaj   +1 more source

Diverse mantle components with invariant oxygen isotopes in the 2021 Fagradalsfjall eruption, Iceland. [PDF]

open access: yesNat Commun, 2022
Bindeman IN   +8 more
europepmc   +1 more source

The next generation of oxy-fuel boiler systems [PDF]

open access: yes, 2005
Research in the area of oxy-fuel combustion which is being pioneered by Jupiter Oxygen Corporation combined with boiler research conducted by the USDOE/Albany Research Center has been applied to designing the next generation of oxy-fuel combustion ...
Patrick, Brian (Jupiter Oxygen Corp.)   +5 more
core  

Oxygen isotopes of anhydrous primary minerals show kinship between asteroid Ryugu and comet 81P/Wild2. [PDF]

open access: yesSci Adv, 2022
Kawasaki N   +93 more
europepmc   +1 more source

Abrupt Heinrich Stadial 1 cooling missing in Greenland oxygen isotopes. [PDF]

open access: yesSci Adv, 2021
He C   +7 more
europepmc   +1 more source

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