Letteratura scientifica selezionata sul tema "Sulphur and Callcium isotopes"
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Articoli di riviste sul tema "Sulphur and Callcium isotopes":
McArdle, Nicola C., e Peter S. Liss. "Isotopes and atmospheric sulphur". Atmospheric Environment 29, n. 18 (settembre 1995): 2553–56. http://dx.doi.org/10.1016/1352-2310(95)00188-5.
Strauss, Harald. "Sulphur isotopes and the early Archaean sulphur cycle". Precambrian Research 126, n. 3-4 (ottobre 2003): 349–61. http://dx.doi.org/10.1016/s0301-9268(03)00104-9.
TRUST, B. A., e B. FRY. "Stable sulphur isotopes in plants: a review". Plant, Cell and Environment 15, n. 9 (dicembre 1992): 1105–10. http://dx.doi.org/10.1111/j.1365-3040.1992.tb01661.x.
Paytan, Adina, Ellen T. Gray, Zhongwu Ma, Andrea Erhardt e Kristina Faul. "Application of sulphur isotopes for stratigraphic correlation". Isotopes in Environmental and Health Studies 48, n. 1 (marzo 2012): 195–206. http://dx.doi.org/10.1080/10256016.2011.625423.
Montinaro, A., e H. Strauss. "Sulphur tales from the early Archean world". International Journal of Astrobiology 15, n. 3 (4 aprile 2016): 177–85. http://dx.doi.org/10.1017/s1473550415000531.
Farquhar, James, Joel Savarino, Terri L. Jackson e Mark H. Thiemens. "Evidence of atmospheric sulphur in the martian regolith from sulphur isotopes in meteorites". Nature 404, n. 6773 (marzo 2000): 50–52. http://dx.doi.org/10.1038/35003517.
Suomijärvi, T., J. H. Kelley, S. E. Hirzebruch, A. Azhari, D. Bazin, Y. Blumenfeld, J. A. Brown et al. "Inelastic proton scattering on Neutron-Rich sulphur isotopes". Acta Physica Hungarica A) Heavy Ion Physics 6, n. 1-4 (ottobre 1997): 177–87. http://dx.doi.org/10.1007/bf03158495.
Humire, P. K., V. Thiel, C. Henkel, A. Belloche, J. C. Loison, T. Pillai, D. Riquelme et al. "Sulphur and carbon isotopes towards Galactic centre clouds". Astronomy & Astrophysics 642 (ottobre 2020): A222. http://dx.doi.org/10.1051/0004-6361/202038216.
Soderberg, Keir, Joh Henschel, Robert J. Swap e Stephen A. Macko. "Sulphur isotopes in the central Namib Desert ecosystem". Transactions of the Royal Society of South Africa 69, n. 3 (2 settembre 2014): 217–23. http://dx.doi.org/10.1080/0035919x.2014.976778.
Wadleigh, Moire A. "Lichens and atmospheric sulphur: what stable isotopes reveal". Environmental Pollution 126, n. 3 (dicembre 2003): 345–51. http://dx.doi.org/10.1016/s0269-7491(03)00247-1.
Tesi sul tema "Sulphur and Callcium isotopes":
Jouini, Arbia. "Perturbations biogéochimiques à la limite Crétacé-Paléogène : apport des isotopes du Soufre et du Calcium". Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0065.
The Cretaceous-Paleogene boundary (KPg, -66 Ma) is associated to one of the deepest biogeochemical cycle disruptions in Earth's recent history. The events associated to the KPg boundary include one of the strongest known oceanic calcareous bioproduction crisis and are coeval with a bolid impact (that formed the Chixculub crater) and the emplacement of a Large Igneous Province (Deccan traps). Many studies investigated the mechanism(s) triggering the environmental perturbations and many questions remain unanswered regarding the relative contribution of the volcanic event and the impact on the KPg crisis. Yet, modification of the ocean-atmosphere system composition through massive input of sulfuric and carbonic acid very likely played a key, underconstrained, role.During this thesis project, I conducted high-resolution stable sulphur and calcium isotope records across the Cretaceous-Paleogene transition. These records are based on monospecific samples of planktonic and benthic foraminifera from the equatorial Pacific.The benthic and planktonic δ44/40Ca records before and after the K-Pg boundary allowed us to demonstrate a succession of episodes of ocean alkalinity change related to the increase in continental weathering and the biocalcification crisis caused by CO2 emissions from Deccan volcanism. Carbonate compensation through dissolution of carbonate sediments, reduction of biocalcification and/or increase in continental weathering had to occur to compensate for the excess CO2. As a result, this led to rapid changes in oceanic carbonate chemistry, in combination with a reduction in the export of surface alkalinity in response to the early Paleogene planktonic biomineralisation crisisExamination of sulphur cycle disruption instead supports the idea that mass extinction through the K-Pg transition is not associated with a global expansion of anoxic conditions, in contrast to the various Phanerozoic mass extinction events, where there are multiples evidences for the development of anoxic conditions associated with carbon cycle disruption. These findings are consistent with micropalaeontological observations that show no benthic foraminiferal mass extinction.This multi-proxy geochemical approach has the advantage of allowing a more detailed assessment of key parameters such as carbonate chemistry and oceanic anoxia across the Cretaceous-Paleogene transition, thus providing a clearer global picture of biogeochemical perturbations around this time
McArdle, Nicola Clare. "The use of stable sulphur isotopes to distinguish between natural and anthropogenic sulphur in the atmosphere". Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335422.
Pruett, Lee. "Stable Sulfur Isotope Rations from West Antarctica and the Tien Shan Mountains: Sulfur Cycle Characteristics from Two Environmentally Distinct Areas". Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/PruettL2003.pdf.
John, Eleanor Heulwen. "Strontium and sulphur isotopes and the origin of Mid-Late Palaeozoic mass extinctions". Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493302.
Johnson, Malia. "An investigation of stable sulphur isotopes as a palaeodietary indicator in South Africa". Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/11257.
Humphries, Stefan. "Stable Isotopes of Sulphur and Oxygen in Forested Catchments: Insight from New Techniques into Sulphur Cycling and Dissolved Organic Matter Alteration". Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/1270.
Dogramaci, Shawan Shawket. "Isotopes of sulphur, oxygen, strontium and carbon in groundwater as tracers of mixing and geochemical processes, Murray Basin, Australia /". Title page, table of contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phd654.pdf.
Elshayeb, Monalisa. "Determining food web impacts on experimental aquatic systems from the disposal of oil sands process-affected waste materials". Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2973.
To determine the potential effects of site construction and OSPM within experimental test sites, carbon and sulphur stable isotopes of water, plankton, aquatic invertebrates and fish were analyzed. With the exception of Chaoborus and Haliplus, all carbon isotope signatures were not significantly different in constructed and reference sites. Also with the exception of Haliplus, sulphur isotope values for aquatic organisms from constructed and reference sites were significantly different. Aquatic organisms and water samples from constructed sites built in, or close, to the boundary of Kcw clays typically had δ34S < 0 ?. Coinciding with depleted δ34S signatures found in these aquatic systems were elevated sulphate concentrations. The waters at experimental test sites are in direct contact with the soil materials that facilitate the accumulation of sulphates as a result of the oxidation of substrate sulphide minerals. In general the results of the study suggest that aquatic food web structure and function do not change with the introduction of OSPM. Shifts in isotopic signatures suggestive of changes in food web structure, however, do occur when site construction exposes Kcw clays in the substrate.
Galeazzo, Tommaso. "Tracking volcanic sulphate : modelling tropospheric volcanic sulphate formation and its oxygen isotopic signatures". Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS300.
Volcanic emissions are a major source of sulphur. Volcanic sulphur is oxidized and forms sulphate aerosols that influence the climate by absorbing and dispersing incident solar radiation. Sulphur emissions in the troposphere influence local and regional climate, but large uncertainties remain regarding oxidation and its conversion into volcanic sulphate aerosols. The oxidation of sulphur in a wide range of volcanic plumes and the influence of volcanic halogens on plume chemistry are studied using a chemical box model. At the same time, the isotopic oxygen composition of volcanic sulphate, namely the excess of 17-O (∆17O), is being explored, which can provide constraints on sulphur oxidation pathways. The results suggest that in the presence of water droplets and ash, the oxidation of sulphur in plumes is mainly due to aqueous phase oxidation with O2 catalyzed by transition metal ions (TMI). Halogen emissions promote the domi- nance of O2 /TMI by inducing ozone depletion events (ODEs). In the absence of water droplets, plume chemistry is largely determined by heterogeneous chemistry on primary sulphate aerosols. The dominant oxidants in these plumes are OH and H2O2. The oxidation rate of sulphur is significantly reduced compared to plumes containing water droplets. The results show that oxygen isotopes in sulphates provide strong constraints on the chemical balance of sulphur in volcanic plumes and on the role of volcanic halogens
Andersson, Karin. "Diet och identitet : Analyser av kol- kväve- och svavelisotoper på indivier från det kristna senvikingatida gravfältet i Björned, Torsåkers socken, Ångermanland". Thesis, Stockholm University, Department of Archaeology and Classical Studies, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1142.
This paper deals with the late Viking age/early medieval grave field in Björned, Torsåker parish, Ångermanland County in northern Sweden. The grave field in Björned is rare because it has all the signs of being Christianized before the surroundings. This awakes questions such as if the people of Björned came from another place and brought the religion with them or if someone else did that for them. To find these answers I have analysed the stable isotope ratios [delta]13C, [delta]15N and [delta]34S in human bone collagen. Through these stable isotopes we can not only see what the people consumed but also where their food had its origin. It seems like several people from the grave field had a different origin then the rest.
Libri sul tema "Sulphur and Callcium isotopes":
1935-, Krouse H. R., Grinenko V. A, International Council of Scientific Unions. Scientific Committee on Problems of the Environment. e United Nations Environment Programme, a cura di. Stable isotopes: Natural and anthropogenic sulphur in the environment. Chichester: Published on behalf of the Scientific Committee on Problems of the Environment (SCOPE) of the International Council of Scientific Unions (ICSU) in collaboration with the United Nations Environment Programme by Wiley, 1991.
Mikołajczuk, Agnieszka. Efekty izotopowe siarki w reakcjach chemicznych. Warszawa: Instytut Chemii i Techniki Jądrowej, 1999.
McArdle, Nicola Clare. The use of stable sulphur isotopes to distinguish between natural and anthropogenic sulphur in the atmosphere. Norwich: University of East Anglia, 1993.
Agency, International Atomic Energy, a cura di. Studies on sulphur isotope variations in nature: Proceedings of an advisory group meeting on the hydrology and geochemistry of sulphur isotopes. Vienna: International Atomic Energy Agency, 1987.
Derda, Małgorzata. Izotopy siarki w przyrodzie: Metodyka oznaczania stosunków izotopowych siarki w węglu i ropie naftowej metodą spektrometrii masowej. Warszawa: Instytut Chemii i Techniki Jądrowej, 1999.
Tyler, Noel. Oxygen- and sulphur-isotope properties of quartz and pyrite from the Pilgrim's Rest Goldfield, eastern Transvaal. Johannesburg: Economic Geology Research Unit, University of the Witwatersrand, 1986.
Krouse, H. R. Environmental sulphur isotope studies in Alberta: A review. Calgary, AB: Acid Deposition Research Program, 1987.
Krouse, H. R. Environmental sulphur isotope studies in Alberta: A review. Calgary: Acid Deposition Research Program, 1987.
Hughes, Anwen Jane. Identification of natural and anthropogenic sources of sulphate in two UK aquifers using sulphur and oxygen isotopes. Birmingham: University of Birmingham, 1998.
Krouse, H. R. Stable Isotopes: Natural and Anthropogenic Sulphur in the Environment (Scope). John Wiley & Sons Ltd (Import), 1991.
Capitoli di libri sul tema "Sulphur and Callcium isotopes":
Prasolov, Edward, Vladimir Khalenev, Boris Belyatsky, Edward Prilepsky e Tatiana Nazarova. "Sulphur Isotopes". In Springer Geology, 49–72. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05216-4_2.
Bottrell, S. H., e R. Raiswell. "Sulphur Isotopes and Microbial Sulphur Cycling in Sediments". In Microbial Sediments, 96–104. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04036-2_12.
Krouse, H. Roy, e Bernhard Mayer. "Sulphur and Oxygen Isotopes in Sulphate". In Environmental Tracers in Subsurface Hydrology, 195–231. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4557-6_7.
Spiro, B., J. Morrisson e O. W. Purvis. "Sulphur Isotopes in Lichens as Indicators of Sources". In Monitoring with Lichens — Monitoring Lichens, 311–15. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0423-7_26.
Reuschel, M., H. Strauss e A. Lepland. "7.1 The End of Mass-Independent Fractionation of Sulphur Isotopes". In Reading the Archive of Earth’s Oxygenation, 1049–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29670-3_1.
Bauer, G. A., G. Gebauer, A. F. Harrison, P. Högberg, L. Högbom, H. Schinkel, A. F. S. Taylor et al. "Biotic and Abiotic Controls Over Ecosystem Cycling of Stable Natural Nitrogen, Carbon and Sulphur Isotopes". In Ecological Studies, 189–214. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-57219-7_9.
Andersson, Per, Peter Torssander e Johan Ingri. "Sulphur isotope ratios in sulphate and oxygen isotopes in water from a small watershed in Central Sweden". In Sediment/Water Interactions, 205–17. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2783-7_18.
Wotte, Thomas. "Carbon and Sulphur Isotopes from the Cambrian Series 2–Series 3 Boundary: Potential Proxies for Global Correlation?" In Springer Geology, 457–60. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_88.
Atti di convegni sul tema "Sulphur and Callcium isotopes":
Gulbransen, Emil, Henrik Friis, Tom Andersen e William Hutchison. "Sulphur isotopes and helvine-group minerals in the Larvik Plutonic Complex, Norway (LPC)". In Goldschmidt2023. France: European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.19386.
Meshoulam, A., W. Said-Ahmad, C. Turich, N. Luu, T. Jacksier, A. Stankiewicz, A. Shurki e A. Amrani. "Mechanism and Kinetics of Volatile Organic Sulfur Compounds Formation and their Sulphur Isotopes Imprint". In 29th International Meeting on Organic Geochemistry. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902842.
Gallagher, Catherine, R., Paul, S. Savage, Geoffrey M. Nowell, Bruce Houghton, Thorvaldur Thordarson e Kevin, W. Burton. "Tracing Mechanisms of Sulphur Release with Cu and Zn Isotopes in Historical Icelandic Flood Lavas". In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.777.
Lu, Chaojin, Ardiansyah Koeshidayatullah, Zou Huayao e Peter K. Swart. "FABRIC-SPECIFIC ISOTOPIC VARIABILITY IN LATE EDIACARAN DOLOMITES, SOUTH CHINA: ELUCIDATED BY MAGNESIUM, SULPHUR AND CLUMPED ISOTOPES". In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-355185.
Adenan, Mohd Noor Hidayat, Zainon Othman, Salmah Moosa, Simon Kelly, Aiman Abrahim, Zawiyah Sharif, Nurhazwani Abd Rahman et al. "Determination of the geographical origin of Malaysian edible bird’s nest by carbon, nitrogen and sulphur (CNS) stable isotopes". In APPLICATION OF MATHEMATICS IN TECHNICAL AND NATURAL SCIENCES: 12th International On-line Conference for Promoting the Application of Mathematics in Technical and Natural Sciences - AMiTaNS’20. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0031893.
Drummond, Drew, Robert Blakeman, John H. Ashton, Ian Farrelly, Jonathan Cloutier, Lola Yesares e Adrian Boyce. "Ore depositional processes at the carbonate-hosted Tara Deep Zn-Pb deposit, Navan, Ireland". In Irish-type Zn-Pb deposits around the world. Irish Association for Economic Geology, 2023. http://dx.doi.org/10.61153/dqcn2038.
Drummond, Drew, Robert Blakeman, John H. Ashton, Ian Farrelly, Jonathan Cloutier, Lola Yesares e Adrian Boyce. "Ore depositional processes at the carbonate-hosted Tara Deep Zn-Pb deposit, Navan, Ireland". In Irish-type Zn-Pb deposits around the world. Irish Association for Economic Geology, 2023. http://dx.doi.org/10.61153/dpcd8412.
Rapporti di organizzazioni sul tema "Sulphur and Callcium isotopes":
Paulen, R. C., A. Plouffe, S. Paradis e I. R. Smith. Lead and sulphur isotopes of sphalerite and galena grains recovered from till samples, northwest Alberta. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/293464.
Eckstrand, O. R., L. N. Grinenko, H. R. Krouse, A. D. Paktunc, P L Schwann e R. F. J. Scoates. Preliminary Data On Sulphur Isotopes and Se/S Ratios, and the Source of Sulphur in Magmatic Sulphides From the Fox River Sill, Molson Dykes and Thompson Nickel Deposits, northern Manitoba. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/126860.