Results 261 to 270 of about 731,514 (328)
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Environmental Isotopes in Hydrogeology

, 1997
The Environmental Isotopes Environmental Isotopes in Hydrogeology Stable Isotopes: Standards and Measurement Isotope Ratio Mass Spectrometry Radioisotopes Isotope Fractionation Isotope Fractionation (a), Enrichment (e), and Separation (D) Tracing the ...
I. Clark, P. Fritz
semanticscholar   +1 more source

Tracking animal migration with stable isotopes

Isotopes in environmental and health studies, 2019
Keith Hobson and Leonard Wassenaar carefully revised and expanded their seminal book on ‘Tracking animal migration with stable isotopes’.
K. Auerswald
semanticscholar   +1 more source

OXYGEN AND HYDROGEN ISOTOPES IN THE HYDROLOGIC CYCLE

, 1996
Changes of the isotopic composition of water within the water cycle provide a recognizable signature, relating such water to the different phases of the cycle.
J. Gat
semanticscholar   +1 more source

Silicon Isotopes

2011
International ...
André, Luc, Cardinal, Damien
openaire   +5 more sources

Isotopic catalysis and isotopic analysis

Russian Journal of Physical Chemistry B, 2013
Isotopes with magnetic nuclei accelerate the biochemical reactions of adenosine triphosphate synthesis by a factor of two to three. An isotope effect in which isotopes are preserved in the reaction system is known as isotopic catalysis. It has been revealed in enzymatic reactions catalyzed by magnesium, zinc, and calcium ions.
Yu. A. Karpov   +4 more
openaire   +2 more sources

Isotopes in the Water Cycle: Regional- to Global-Scale Patterns and Applications

Annual Review of Earth and Planetary Science, 2019
Stable isotope ratios of hydrogen and oxygen have been applied to water cycle research for over 60 years. Over the past two decades, however, new data, data compilations, and quantitative methods have supported the application of isotopic data to address
G. Bowen, Z. Cai, R. Fiorella, A. Putman
semanticscholar   +1 more source

Isotopic Distributions

2013
Isotopic information determined by mass spectrometry can be used in a wide variety of applications. Broadly speaking these could be classified as "passive" applications, meaning that they use naturally occurring isotopic information, and "active" applications, meaning that the isotopic distributions are manipulated in some way.
Alan L, Rockwood, Magnus, Palmblad
openaire   +3 more sources

Carbon Isotopes in PhotosynthesisFractionation techniques may reveal new aspects of carbon dynamics in plants

, 1988
he efficiency of photosynthesis continues to interest biochemists, biologists, and plant physiologists. Scientists interested in CO2 uptake are concerned about the extent to which the uptake rate is limited by such factors as stomatal diffusion and the ...
M. O'Leary
semanticscholar   +1 more source

ISOTOPIC RESPONSE

International Journal of Dermatology, 1995
Abstract Background. The occurrence of a new skin disorder exactly at the site of another one, already healed and unrelated, was first described in 1955. In 1985, Wolf et al. recognized that we are dealing with a dermatologic phenomenon and established a precise definition for this phenomenon.
WOLF R   +3 more
openaire   +3 more sources

Stable Isotopes in Plant Ecology

, 2002
▪ Abstract The use of stable isotope techniques in plant ecological research has grown steadily during the past two decades. This trend will continue as investigators realize that stable isotopes can serve as valuable nonradioactive tracers and ...
T. Dawson   +4 more
semanticscholar   +1 more source

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