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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1947 12
1948 14
1949 28
1950 25
1951 34
1952 12
1953 27
1954 18
1955 31
1956 23
1957 17
1958 27
1959 18
1960 31
1961 31
1962 68
1963 771
1964 1589
1965 1355
1966 1570
1967 3322
1968 4399
1969 4745
1970 5134
1971 5796
1972 6628
1973 6951
1974 6425
1975 1513
1976 363
1977 438
1978 415
1979 474
1980 573
1981 634
1982 651
1983 716
1984 922
1985 910
1986 829
1987 624
1988 628
1989 595
1990 739
1991 740
1992 702
1993 713
1994 694
1995 750
1996 734
1997 796
1998 898
1999 843
2000 957
2001 1049
2002 1154
2003 1152
2004 1275
2005 1400
2006 1329
2007 1446
2008 1400
2009 1390
2010 1268
2011 1391
2012 1496
2013 1507
2014 1378
2015 1309
2016 1058
2017 1040
2018 1017
2019 501
2020 14
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88,808 results
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Page 1
Recent developments in heterocycle labeling with carbon isotopes.
Del Vecchio A, et al. J Labelled Comp Radiopharm 2018 - Review. PMID 29926506
The development of novel and straightforward labeling strategies for the effective insertion of carbon isotopes into heterocylic scaffolds is an inspiring and vibrant field of research. The use of carbon-11, carbon-13, and carbon-14 isotopes is well established in life science and particularly in pharmaceutical and agrochemical industry. ...
The development of novel and straightforward labeling strategies for the effective insertion of carbon isotopes into heterocyl …
Hyperpolarized 13C MRI: State of the Art and Future Directions
Wang ZJ, et al. Radiology 2019 - Review. PMID 30835184 Free PMC article.
Hyperpolarized (HP) carbon 13 ((13)C) MRI is an emerging molecular imaging method that allows rapid, noninvasive, and pathway-specific investigation of dynamic metabolic and physiologic processes that were previously inaccessible to imaging. ...
Hyperpolarized (HP) carbon 13 ((13)C) MRI is an emerging molecular imaging method that allows rapid, noninvasive, and pathway-specifi …
New radical methods for the potential synthesis of carbon-13 and carbon-14 labeled complex products.
Maxwell BD. J Labelled Comp Radiopharm 2018 - Review. PMID 30156329
As such, isotope chemists need to continually add new isotopic methods to their armamentarium to successfully label complex molecules with carbon-13 and carbon-14. Recently, there has been a surge in the use of radicals to form new carbon-carbon bonds and for the incorporation of functional groups which can be used to incorporate isotopically labeled carbons. ...
As such, isotope chemists need to continually add new isotopic methods to their armamentarium to successfully label complex molecules with …
Haribabu Arthanari
Marx V. Nat Methods 2019. PMID 30886416
Land use driven change in soil pH affects microbial carbon cycling processes.
Malik AA, et al. Nat Commun 2018. PMID 30181597 Free PMC article.
Soil microorganisms act as gatekeepers for soil-atmosphere carbon exchange by balancing the accumulation and release of soil organic matter. ...We discovered distinct pH controls on microbial mechanisms of carbon accumulation. Land use intensification in low-pH soils that increased the pH above a threshold (~6.2) leads to carbon loss through increased decomposition, following alleviation of acid retardation of microbial growth. ...
Soil microorganisms act as gatekeepers for soil-atmosphere carbon exchange by balancing the accumulation and release of soil organic …
Low turnover rates of carbon isotopes in tissues of two nectar-feeding bat species.
Voigt CC, et al. J Exp Biol 2003. PMID 12624176 Free article.
Stable isotopes of carbon are commonly used to characterize dietary preferences in animals. Because turnover rates of carbon isotopes are related to metabolic rate, we wanted to determine the rates at which carbon isotopes are exchanged in tissues of two species of nectar-feeding bats (Leptonycteris curasoae and Glossophaga soricina), both of which have relatively high mass-specific metabolic rates. ...Compared to the initial diet, target tissues were enriched in heavy carbon isotopes by 2.8 per thousand in L. curasoae and by 2.6 per thousand in G. soricina. ...
Stable isotopes of carbon are commonly used to characterize dietary preferences in animals. Because turnover rates of carbo
The age of ambergris
Rowland SJ, et al. Nat Prod Res 2019. PMID 30470137
Carbon stable-isotope tracking in breath for comparative studies of fuel use.
Welch KC, et al. Ann N Y Acad Sci 2016 - Review. PMID 25817456
Almost half a century ago, researchers demonstrated that the ratio of stable carbon isotopes in exhaled breath of rats and humans could reveal the oxidation of labeled substrates in vivo, opening a new chapter in the study of fuel use, the fate of ingested substrates, and aerobic metabolism. ...
Almost half a century ago, researchers demonstrated that the ratio of stable carbon isotopes in exhaled breath of rats and hum …
88,808 results
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