Results 41 to 50 of about 2,289,697 (227)

A Rapid Synchronous Determination Method for Soil Inorganic Carbon Content and its Carbon Isotope Ratio

Journal of Isotopes
The accumulation and leaching of soil inorganic carbon (SIC) play crucial roles in the global carbon balance and represent a key research focus in carbon cycling studies. Accurate quantification of SIC content and its stable isotope ratio is critical for
Zhen HE, Hongzhao YUAN, Liping ZHANG, Meimei GENG, Liwei XU, Chunyong LI, Can PENG, Wen CHEN, Siyu TANG, Huan ZHONG, Jiurong WANG   +10 more
doaj   +1 more source

INTERREGIONAL CORRELATION OF THE MIDDLE FRASNIAN (UPPER DEVONOIAN) OF THE NORTH-WEST OF THE RUSSIAN PLATE AND THE EAST OF THE PECHORA PLATE: AN ECOGEOCHEMICAL ASPECT

Геодинамика и тектонофизика, 2022
The paper provides an example of the first stratigraphic application of ecogeochemical method based on the analysis of the carbon isotope values in conodont elements.
A. V. Zhuravlev
doaj   +1 more source

Isotopic Composition of Carbon in Vinegars

Journal of AOAC INTERNATIONAL, 1985
Abstract Measurements of δ13C and 14C-activity were performed on vinegars from various known sources. Natural vinegar can be distinguished from petrochemical acetic acid by 14C-analysis: Natural vinegar currently gives values of > 112% of modern activity; petrochemical acetic acid yields values of 0% of modern activity.
D A, Krueger, H W, Krueger
openaire   +2 more sources

The Precambrian marine carbonate isotope database: version 1.1. [PDF]

, 2002
We present a compilation of strontium, carbon, and oxygen isotope compositions of roughly 10,000 marine carbonate rocks of Archean - Ordovician age (3800 Ma – 450 Ma).
Shields, GA, Veizer, J, Ján Veizer, Graham Shields, Shields, Graham, Veizer, Ján   +5 more
core   +1 more source

Carbon allocation and carbon isotope fluxes in the plant-soil-atmosphere continuum: a review [PDF]

, 2011
The terrestrial carbon (C) cycle has received increasing interest over the past few decades, however, there is still a lack of understanding of the fate of newly assimilated C allocated within plants and to the soil, stored within ecosystems and lost to ...
Gomez-Casanovas, N, Esperschütz, J., A. Knohl, S. Palacio, Brugnoli, E., Uchida, Y., M. Barthel, Bahn, Michael, Boeckx, P., Brüggemann, N., Badeck, Franz Werner, Gessler, Arthur; id_orcid, Kayler, Z, Barthel, Matti, Palacio, S., J. Esperschütz, Gavrichkova, O, Ghashghaie, Jaleh, F. Badeck, Salmon, Yann, Palacio, Sara, J. Ghashghaie, Barthel, M, N. Gomez-Casanovas, Salmon, Y., Gomez-Casanovas, Nuria, Buchmann, N, Badeck, F, Y. Salmon, Boeckx, Pascal, Barthel, M., Ghashghaie, J., Badeck, F., Esperschütz, J, Palacio, S, Brueggemann, N., A. Gessler, Y. Uchida, Gavrichkova, O., Keel, SG, M. Bahn, Keitel, C, Knohl, A, E. Brugnoli, Uchida, Y, Kuptz, Daniel, O. Gavrichkova, Kayler, Z., Knohl, A., Kuptz, D, Brugnoli, Enrico, Brüggemann, N, Brugnoli, E, Z. Kayler, Uchida, Yoshitaka, Keel, Sonjagisela, D. Kuptz, Keitel, C., Bahn, M, Knohl, Alexander, Keel, S. G., Buchmann, Nina; id_orcid, Gessler, A., Keitel, Claudia, Kayler, Zachary E., C. Keitel, Salmon, Y, Kuptz, D., Esperschütz, Jürgen, N. Brüggemann, Keel, S.G., Gomez-Casanovas, N., P. Boeckx, Gessler, A, S. G. Keel, Esperschuetz, J., Brüggemann, Nicolas, Gavrichkova, Olga, Buchmann, N., N. Buchmann, Ghashghaie, J, Keel, S., Bahn, M.   +82 more
core   +2 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

A STUDY ON CARBON ISOTOPE OF CO₂ AND CH₄ IN WESTERN DIENG PLATEU BY GAS CHROMATOGRAPHY- ISOTOPE RATIO MASS SPECTROMETER (GC-IRMS)

Indonesian Journal of Chemistry, 2010
The carbon isotope can be used to evaluate volcanism phenomenon of volcano. The study of carbon isotope of CO2 and CH4 was carried out in western Dieng Plateau by mass-spectrometer.
Hanik Humaida
doaj   +1 more source

To concentrate or ventilate? Carbon acquisition, isotope discrimination and physiological ecology of early land plant life forms. [PDF]

, 2010
A comparative study has been made of the photosynthetic physiological ecology and carbon isotope discrimination characteristics for modern-day bryophytes and closely related algal groups.

core   +3 more sources

De novo synthesis of short‐chain aldehydes and hydrocarbons secreted by the brown marmorated stink bug Halyomorpha halys

FEBS Open Bio, EarlyView.
The brown marmorated stink bug, Halyomorpha halys, mainly secretes 4‐oxo‐(E)‐2‐hexenal, (E)‐2‐decenal, dodecane and tridecane, a mixture representative of that released by many heteropterans. We demonstrated that H. halys can synthesise these secretory components de novo using dietary glucose.
Haruna Fujimori, Koji Noge
wiley   +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, David J Hoeinghaus, Gislaine I Manetta, Evanilde Benedito   +3 more
doaj   +1 more source