Results 81 to 90 of about 157,168 (328)

Origin and depositional environments of source rocks and crude oils from Niger Delta Basin: Carbon isotopic evidence

China Geology, 2020
: Thirty-nine crude oils and twenty-one rock samples from Niger Delta Basin, Nigeria have been characterized based on their isotope compositions by elemental analysis-isotope ratio mass spectrometry and gas chromatography-isotope ratio mass spectrometry.
Abiodun B Ogbesejana, Oluwasesan M Bello, Tijjani Ali   +2 more
doaj   +1 more source

Boron isotope ratio determination in carbonates /via/ LA-MC-ICP-MS using soda-lime glass standards as reference material [PDF]

, 2010
A new in situ method using LA-MC-ICP-MS (193 nm excimer laser) for the determination of stable boron isotope ratios (δ11B) in carbonates was developed.
Aggarwal, Aggarwal, Agnes Heinemann, Anton Eisenhauer, Dickson, Duchateau, Eggins, Fietzke, Fietzke, Florian Böhm, Foster, Foster, Gaillardet, Hemming, Hemming, Hemming, Heumann, Hönisch, Isabelle Taubner, Jan Fietzke, Jonathan Erez, Kakihana, Kasemann, Kasemann, Klochko, Klochko, le Roux, Lécuyer, Pagani, Palmer, Reynaud, Rollion-Bard, Rollion-Bard, Sanyal, Schmitt, Spivack, Spivack, Vengosch, Vengosch, Zeebe   +39 more
core   +1 more source

Synergistic Fluorine and Cyanide Co‐Modification to Reinforce Photoinduced Excitons Formation and Transfer for Efficient CO2 Photoreduction

Advanced Functional Materials, EarlyView.
An advanced F‐doped and ─CN group co‐modified FCCN is developed. Due to the synergistic effects of co‐modification in promoting photogenerated exciton generation, enhancing charge kinetics, expanding active interfacial areas, and optimizing CO2 interfacial reactions, the FCCN photocatalyst demonstrates excellent catalytic performance and high ...
Sheng‐Qi Guo, Qingqing Dong, Xiaodong Sun, Ziqi Zhang, Linda Wang, Lei Bao, Bozhan Li, Hui Li, Yanrui Li, Tianyi Ma   +9 more
wiley   +1 more source

The photosynthetic pathways of plant species surveyed in Australia’s national terrestrial monitoring network

Scientific Data, 2021
Measurement(s) oxidative photosynthetic carbon pathway Technology Type(s) digital curation • elemental analysis isotope ratio mass spectrometry Factor Type(s) date • geographic location Sample Characteristic - Organism Viridiplantae Sample Characteristic
Samantha E. M. Munroe, Francesca A. McInerney, Jake Andrae, Nina Welti, Greg R. Guerin, Emrys Leitch, Tony Hall, Steve Szarvas, Rachel Atkins, Stefan Caddy-Retalic, Ben Sparrow   +10 more
doaj   +1 more source

Accurate determination of natural and enriched Cl isotopic ratios in diverse sample matrices with tandem mass spectrometry using an O₂ reaction gas [PDF]

, 2023
Tyler D. Schlieder, I. J. Arnquist, Nicole Rocco, M. L. di Vacri, Danny Bottenus   +4 more
openalex   +1 more source

Fingerprint analysis of biological samples using ICP-MS and IR-MS [PDF]

, 2012
Atomic spectroscopy based analytical techniques can generate fingerprints encompassing the vast majority of elements found in the periodic table as well as ratios of their stable isotopes. These highly multivariate fingerprints have laid the foundation
Husted, Søren, Laursen, Kristian Holst
core  

Development of an advanced on-line position-specific stable carbon isotope system and application to methyl tert-butyl ether [PDF]

, 2009
We present an advanced system for on-line position-specific carbon isotope analysis. The main limitation of on-line intramolecular isotope ratio measurements has been that optimal pyrolytic fragments are obtained mostly at temperatures where the analyte ...
Abelson, Barrie, Barth, Benson, Coplen, Corso, Corso, Corso, Daly, Dempster, Dias, Elsner, Elsner, Fischer, Gray, Hall, Hall, Harrington, Hayes, Hirschorn, Huang, Hunkeler, Jasper, Jeffrey, Kolhatkar, Kuder, Mancini, Mariotti, Matthews, Meckenstock, Meier-Augenstein, Meier-Augenstein, Merritt, Miller, Monson, Morrison, O'Sullivan, Poulson, Richnow, Rosell, Sacks, Sano, Schmidt, Schmidt, Schüth, Slater, Slater, Slater, Smallwood, Somsamak, Somsamak, Vogler, Wang, Wolyniak, Wolyniak, Yamada, Zwank   +56 more
core   +1 more source

Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis

Advanced Functional Materials, EarlyView.
An all‐optical method is presented for quantifying the density of boron vacancy spin defects in hexagonal boron nitride (hBN). By correlating Raman and photoluminescence signals with irradiation fluence, defect‐induced Raman modes are identified and established an relationship linking optical signatures to absolute defect densities. This enables direct
Atanu Patra, Paul Konrad, Andreas Sperlich, Timur Biktagirov, Wolf Gero Schmidt, Lesley Spencer, Igor Aharonovich, Sven Höfling, Vladimir Dyakonov   +8 more
wiley   +1 more source

Provenancing Flower Bulbs by Analytical Fingerprinting: Convallaria Majalis

Agriculture, 2015
The origin of agricultural products is gaining in appreciation while often hard to determine for various reasons. Geographical origin may be resolved using a combination of chemical and physical analytical technologies. In the present case of Lily of the
Saskia M. van Ruth, Ries de Visser
doaj   +1 more source

SI‐bioATRP in Mesoporous Silica for Size‐Exclusion Driven Local Polymer Placement

Advanced Functional Materials, EarlyView.
An enzyme‐catalyzed surface‐initiated atom transfer radical polymerization (SI‐bioATRP) of an anionic monomer within mesoporous silica particles, using hemoglobin as a catalyst, allows for controlling the location of the formed polymer via size‐exclusion effects between the nanopores and the biomacromolecules, thereby opening routes to functional ...
Oleksandr Wondra, Eleonora Ornati, Robert Lehn, Joanna J. Mikolei, Hergen Breitzke, Raheleh Pardehkhorram, Gerd Buntkowsky, Nico Bruns, Annette Andrieu‐Brunsen   +8 more
wiley   +1 more source