Results 11 to 20 of about 3,466,743 (324)
Energy Exploration & Exploitation, 2023 C 5 –C 7 light hydrocarbons are important components in petroleum and are extensively employed as an auxiliary approach in petroleum research. Consensus on the mechanism of light hydrocarbon generation has not yet been achieved.
Chen Zhang +5 more
doaj +1 more source
Centrifugal Separation of Carbon and Chlorine Isotopes Using Freon-11 as Processing Gas
Journal of Isotopes, 2017 In order to explore the effective ways for high-abundance carbon and chlorine isotopes production, a method to acquire high-abundance carbon-12 and chlorine-35 isotopes simultaneously was presented by gas centrifugation process using Freon-11 as ...
PEI Gen;ZHOU Ming-sheng;JIANG Dong-jun
doaj +1 more source
Carbon Isotopes Near Drip Lines in the Relativistic Mean-Field Theory [PDF]
, 1998 We have investigated the ground-state properties of carbon isotopes in the framework of the relativistic mean-field (RMF) theory. RMF calculations have been performed with the non-linear scalar self-coupling of the $\sigma$ meson using an axially ...
A. Mueller +35 more
core +5 more sources
Isotopic Production Cross Sections in Proton-Nucleus Collisions at 200 MeV [PDF]
, 2006 Intermediate mass fragments (IMF) from the interaction of $^{27}$Al, $^{59}$Co and $^{197}$Au with 200 MeV protons were measured in an angular range from 20 degree to 120 degree in the laboratory system.
Aschman, D. G. +12 more
core +2 more sources
Yankuang ceshi, 2020 BACKGROUND Organic carbon and nitrogen stable isotopes (δ13C, δ15N) in marine sediments are used as effective indicators to trace the changes of air, temperature, precipitation and other parameters in different geological time. Elemental analysis-isotope
CHANG Wen-bo +3 more
doaj +1 more source
Dry season limnological conditions and basin geology exhibit complex relationships with δ13C and δ15N of carbon sources in four Neotropical floodplains. [PDF]
PLoS ONE, 2017 Studies in freshwater ecosystems are seeking to improve understanding of carbon flow in food webs and stable isotopes have been influential in this work.
Gustavo H Zaia Alves +3 more
doaj +1 more source
Tracing the source of soil organic matter eroded from temperate forest catchments using carbon and nitrogen isotopes [PDF]
, 2016 Soil erosion continuously redistributes soil and associated soil organic matter (SOM) on the Earth's surface, with important implications for biogeochemical cycling of essential elements and terrestrial carbon sequestration.
Berhe, AA +6 more
core +1 more source
Frontiers in Marine Science, 2019 Blue carbon is the organic carbon in oceanic and coastal ecosystems that is captured on centennial to millennial timescales. Maintaining and increasing blue carbon is an integral component of strategies to mitigate global warming.
Nathan R. Geraldi +12 more
doaj +1 more source
Halite and stable chlorine isotopes in the Zag H3-6 breccia [PDF]
, 2004 Zag is an H3-6 chondrite regolith breccia within which we have studied 14 halite grains ?3mm. The purity of the associated NaCl-H2O brine is implied by freezing characteristics of fluid inclusions in the halite and EPMA analyses together with a lack of ...
Banks, D.A. +3 more
core +1 more source