Results 241 to 250 of about 129,759 (303)

Volcanism and basalt weathering drove Ordovician climatic cooling. [PDF]

Nat Commun
Zhao H, Zhang L, Algeo TJ, Lyu Z, Wang X, Hao F.   +5 more
europepmc   +1 more source

Per- and polyfluoroalkyl substances (PFAS) in fish collected from the Rio Grande and reservoirs in northern New Mexico. [PDF]

PLoS One
Clements J, Stanek J, Conrad C, Celmer J, Mora H, Jones Z, Gallegos K, Gadek C, Gaukler S.   +8 more
europepmc   +1 more source

Reconstruction of paleoenvironments using carbon stable isotopes of specific compounds

Anais da Academia Brasileira de Ciências, 2000
Santos Neto Eugenio V.
doaj  

The blood-sucking tick Ixodes hexagonus reveals dietary stable isotope signatures of mammalian hosts. [PDF]

PLoS One
Mortier GG, Black S, Kitchener AC, Sainsbury KA, McDonald RA, Hantke G, Perotti MA.   +6 more
europepmc   +1 more source

Tracking sources and transformations of dissolved sulfate in karstic sub-basins in Southwest China using dual isotopes and water chemistry. [PDF]

Sci Rep
Wang J, Zhou Z, Dong H, Ding S, Wang X, Zhang Y, Huang Y.   +6 more
europepmc   +1 more source

Water use efficiency of Cupressus gigantea is higher in mountain slope habitats compared to riverside habitats. [PDF]

PLoS One
Jiang Y, Luan L, Zuo Y, Liu S, He Q, He J, Wu R, Jiang G, Liu M.   +8 more
europepmc   +1 more source

Green Sea Turtle Recruitment in the Eastern North Pacific: Patterns Identified Using Geochemical Signatures in Bones. [PDF]

Ecol Evol
Turner Tomaszewicz CN, LaCasella E, Lemons GE, LeRoux R, Seminoff JA.   +4 more
europepmc   +1 more source

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Stable Isotope Geochemistry of Various Carbonates

John Heinrichs Scholarly & Creative Activities Day, 2021
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Jenna Howard, Kaiden O'Dell, Riley Sanford, Matthew Tuttle, Jerrad Watts, Mitchell Lukens   +5 more
openaire   +1 more source

Stable carbon isotopes in human tissues

Nature, 1978
ON studying the distribution of 14C from nuclear weapon tests in a wide range of human tissues, it was observed that significant modification of 14C/12C isotopic ratio had occurred, largely as a function of variable carbon renewal rates1,2. As a parallel exercise, 13C/12C isotope ratios have been assayed, 13C and 12C being the nonradioactive isotopes ...
T D, Lyon, M S, Baxter
openaire   +2 more sources

Stable Carbon and Nitrogen Isotopic

Aquatic Geochemistry, 2004
The perennially ice-covered lakes in the McMurdo Dry Valleys, Antarctica, are part of the coldest and driest ecosystem on earth. To understand lacustrine carbon and nitrogen cycling in this end-member ecosystem, and to define paleolimnological proxies for ice-covered lakes, we measured the stable carbon and nitrogen isotopic composition of particulate ...
Jennifer Lawson, Peter T Doran, Fabien Kenig, David J Des marais, John C Priscu   +4 more
openaire   +1 more source