scholarly journals 7. Carbon Isotope Ratio in Comets and Interstellar Matter

1977 ◽  
Vol 39 ◽  
pp. 499-503 ◽  
Author(s):  
V. Vanysek
Keyword(s):  
Solar System ◽  
Interstellar Medium ◽  
Carbon Isotope ◽  
Isotope Ratio ◽  
Molecular Clouds ◽  
Carbon Isotope Ratio ◽  
Stellar Atmospheres ◽  
Interstellar Matter ◽  
Interstellar Molecular Clouds

The 12C/13C isotope ratio in the interstellar medium and in stellar atmospheres is discussed and compared to the value found in the solar system and especially in comets. The cometary value (≥ 100) tends to be slightly above the terrestrial value (89) and is definitively higher than that for interstellar molecular clouds (about 30 to 50). This result implies that comets are not of interstellar origin.

The Carbon Isotope Ratio in Local Molecular Clouds

2006 ◽  
pp. 155-161
Author(s):  
Miwa Goto ◽  
Tomonori Usuda ◽  
Naruhisa Takato ◽  
Hayashi Masahiko ◽  
Seiichi Sakamoto ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Isotope Ratio ◽  
Molecular Clouds ◽  
Carbon Isotope Ratio

Stable carbon isotope ratio variations of organic matter in Orca Basin sediments

1981 ◽  
Vol 45 (2) ◽  
pp. 257-260 ◽  
Author(s):  
Mark A Northam ◽  
David J Curry ◽  
Richard S Scalan ◽  
Patrick L Parker
Keyword(s):  
Organic Matter ◽  
Carbon Isotope ◽  
Isotope Ratio ◽  
Stable Carbon Isotope ◽  
Carbon Isotope Ratio ◽  
Stable Carbon ◽  
Stable Carbon Isotope Ratio ◽  
Orca Basin

Increase in soil stable carbon isotope ratio relates to loss of organic carbon: results from five long-term bare fallow experiments

Oecologia ◽  
2014 ◽  
Vol 177 (3) ◽  
pp. 811-821 ◽  
Author(s):  
Lorenzo Menichetti ◽  
Sabine Houot ◽  
Folkert van Oort ◽  
Thomas Kätterer ◽  
Bent T. Christensen ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Isotope ◽  
Isotope Ratio ◽  
Stable Carbon Isotope ◽  
Carbon Isotope Ratio ◽  
Stable Carbon ◽  
Stable Carbon Isotope Ratio ◽  
Bare Fallow

Correlations between net primary productivity and foliar carbon isotope ratio across a Tibetan ecosystem transect

Ecography ◽  
2009 ◽  
Vol 32 (3) ◽  
pp. 526-538 ◽  
Author(s):  
Tianxiang Luo ◽  
Lin Zhang ◽  
Huazhong Zhu ◽  
Christopher Daly ◽  
Mingcai Li ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Primary Productivity ◽  
Isotope Ratio ◽  
Net Primary Productivity ◽  
Carbon Isotope Ratio

Annual rainfall does not directly determine the carbon isotope ratio of leaves of Eucalyptus species

2008 ◽  
Vol 132 (4) ◽  
pp. 440-445 ◽  
Author(s):  
Neil C. Turner ◽  
Ernst-Detlef Schulze ◽  
Dean Nicolle ◽  
Jens Schumacher ◽  
Iris Kuhlmann
Keyword(s):  
Carbon Isotope ◽  
Isotope Ratio ◽  
Carbon Isotope Ratio ◽  
Annual Rainfall ◽  
Eucalyptus Species

scholarly journals Epiandrosterone sulfate prolongs the detectability of testosterone, 4‐androstenedione, and dihydrotestosterone misuse by means of carbon isotope ratio mass spectrometry

2017 ◽  
Vol 9 (11-12) ◽  
pp. 1695-1703 ◽  
Author(s):  
Thomas Piper ◽  
Marlen Putz ◽  
Wilhelm Schänzer ◽  
Valentin Pop ◽  
Malcolm D. McLeod ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Carbon Isotope ◽  
Isotope Ratio ◽  
Carbon Isotope Ratio ◽  
Isotope Ratio Mass Spectrometry
Sign in / Sign up

Export Citation Format

Share Document