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Isotopes in the Water Cycle: Regional- to Global-Scale Patterns and Applications
Annual Review of Earth and Planetary Science, 2019Stable 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
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Isotopic catalysis and isotopic analysis
Russian Journal of Physical Chemistry B, 2013Isotopes 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
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, 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
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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
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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
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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
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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
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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
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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
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Diffusion Isotope Effects in Isotope Mixtures
Berichte der Bunsengesellschaft für physikalische Chemie, 1972AbstractThe tracer diffusion of deuterium and tritium in the β‐phase of PdHn has been measured by means of special techniques, the time lag method with mass spectrometer or counter tube as detector, and the decay function of isotope exchange. It has been found that D atoms as tracer in β‐PdHn, i.e.
G. Sicking, E. Wicke, E. Gans, B. Bonn
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Terra Nova, 1998
The closure of isotopic chronometers to loss or exchange of radiogenic daughters is best analysed in terms of phenomena that induce recrystallization, i.e. fluid circulation and strain. In the presence of these fast phenomena, temperature is not a rate‐controlling parameter for isotope transport. Only in those rare instances where no fast mechanism can
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The closure of isotopic chronometers to loss or exchange of radiogenic daughters is best analysed in terms of phenomena that induce recrystallization, i.e. fluid circulation and strain. In the presence of these fast phenomena, temperature is not a rate‐controlling parameter for isotope transport. Only in those rare instances where no fast mechanism can
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Stable isotopes of carbon and nitrogen in the study of avian and mammalian trophic ecology
, 2000Differential fractionation of stable isotopes of carbon during photosynthesis causes C 4 plants and C3 plants to have distinct carbon-isotope signatures. In addition, marine C 3 plants have stable-isotope ratios of carbon that are intermediate between C4
J. Kelly
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