Results 21 to 30 of about 1,382,192 (301)

Cluster Structures in Oxygen Isotopes [PDF]

Progress of Theoretical Physics, 2008
9pages ...
Furutachi, N., kimura, M., Doté, A., Kanada-En'yo, Y., oryu, S.   +4 more
openaire   +2 more sources

Stable isotope values in modern bryozoan carbonate from New Zealand and implications for paleoenvironmental interpretation [PDF]

, 2004
Bryozoan carbonate contains useful geochemical evidence of temperate shelf paleoenvironments. Stable isotope values were determined for 103 modern marine bryozoan skeletons representing 30 species from New Zealand. δ18O values range from -1.4 to 2.8 VPDB,
Nelson, Campbell S., Campbell S. Nelson, Marcus M. Key, Smith, Abigail M., Key, Marcus M., Patterson, William P., Abigail M. Smith, William P. Patterson   +7 more
core   +1 more source

Simulating oxygen isotope ratios in tree ring cellulose using a dynamic global vegetation model [PDF]

Biogeosciences, 2016
Records of stable oxygen isotope ratios in tree rings are valuable tools to reconstruct past climatic conditions and investigate the response of trees to those conditions.
S. G. Keel, F. Joos, R. Spahni, M. Saurer, R. B. Weigt, S. Klesse   +5 more
doaj   +1 more source

Application of the Data on δ¹³C and δ¹⁸O of Carbonates for the Study of Unconventional Reservoirs on the Example of the Bazhenov Source Rocks, Western Siberia, Russia

Geosciences, 2021
This paper addresses potential application of data on stable carbon and oxygen isotope composition of carbonates for study of organic rich source rocks on the example of the Late Jurassic–Early Cretaceous Bazhenov Formation (West Siberian petroleum basin,
Anna Yurchenko, Andrey Voropaev, Elena Kozlova, Nikita Morozov, Mikhail Spasennykh   +4 more
doaj   +1 more source

Continuous measurements of atmospheric oxygen and carbon dioxide on a North Sea gas platform [PDF]

, 2010
A new atmospheric measurement station has been established on the North Sea oil and gas production platform F3, 200 km north off the Dutch coast (54°51' N, 4°44' E).
Neubert, R.E.M.,, S. van der Laan, Meijer, H. A. J., R. E. M. Neubert, Laan-Luijkx, I.T., van der, Laan, S., van der, Laan-Luijkx, I.T. van der, Laan, S. van der, van der Laan, S., I. T. van der Laan-Luijkx, H. A. J. Meijer, van der Laan-Luijkx, I.T., Laan-Luijkx, I.T. van der,, Meijer, H.A.J., Laan, S. van der,, Meijer, H.A.J.,, van der Laan-Luijkx, I. T., Meijer, H.A.J.; id_orcid, Neubert, R.E.M., Neubert, R. E. M.   +19 more
core   +3 more sources

Oxygen Isotope Profiles in Firn Cores from Mizuho Plateau, Antarctica

Antarctic Record, 1977
Oxygen isotope, gross β-radioactivity and stratigraphic determinations were done on firn cores from Mizuho Plateau, Antarctica. Factors controlling oxygen isotope variations in firn were discussed. From the results of gross β-activity measurements, it is
Kikuo KATO, Okitsugu WATANABE
doaj   +1 more source

Divergent biochemical fractionation, not convergent temperature, explains cellulose oxygen isotope enrichment across latitudes. [PDF]

PLoS ONE, 2011
Recent findings based on the oxygen isotope ratios of tree trunk cellulose indicate that the temperature of biomass production in biomes ranging from boreal to subtropical forests converge to an average leaf temperature of 21.4°C.
Leonel Sternberg, Patricia Fernandes Vendramini Ellsworth   +1 more
doaj   +1 more source

Subbarrier interactions of the oxygen isotopes [PDF]

Physical Review C, 1987
We derive a unified description of the low-energy elastic, inelastic, neutron transfer, and fusion cross sections of systems involving two stable oxygen isotopes. Coupled channels equations with an incoming wave boundary condition are employed, as is the no-recoil approximation; the adiabatic approximation, which violates unitarity, is avoided.
Pönisch, V., Koonin, S. E.
openaire   +3 more sources

Do oxygen isotope values in collagen reflect the ecology and physiology of neotropical mammals?

Frontiers in Ecology and Evolution, 2015
Stable isotope data provide insight into the foraging ecology of animals. Traditionally, carbon and nitrogen isotope values have been used to infer dietary and habitat preferences.
Brooke eCrowley, Amanda Dawn Melin, Amanda Dawn Melin, Justin Douglas Yeakel, Justin Douglas Yeakel, Nathaniel Jay Dominy   +5 more
doaj   +1 more source

Improvements in the preparation of phosphate for oxygen isotope analysis from soils and sediments. [PDF]

PLoS ONE, 2018
In contrast to the successful preparation of phosphate for oxygen isotope analysis from water samples, there are still a series of problems for similar analyses from soils and sediments.
Zifu Xu, Tao Huang, Xijie Yin
doaj   +1 more source