Results 81 to 90 of about 3,949 (205)

Inter-Laboratory Characterisation of a Low-Power Channel-Less Hall-Effect Thruster: Performance Comparisons and Lessons Learnt

Aerospace
A collaborative inter-laboratory study was conducted to characterise the performance of the novel 250 W External Discharge Plasma Thruster (XPT) with a channel-less Hall effect-type thruster designed to address lifetime limitations and lower-power ...
Thomas F. Munro-O’Brien, Mohamed Ahmed, Andrea Lucca Fabris, Charles N. Ryan   +3 more
doaj   +1 more source

Systematic Optimization of an SLE‐DAPTAD LC–MS/MS Workflow for Simultaneous Quantification of Low‐Abundance Vitamin D3 Metabolites in Plasma

Rapid Communications in Mass Spectrometry, Volume 40, Issue 20, 30 October 2026.
ABSTRACT Rationale Liquid chromatography–tandem mass spectrometry (LC–MS/MS) analysis of vitamin D3 metabolites is analytically challenging because these compounds are structurally similar, strongly matrix‐associated, and have poor ionization efficiency.
Marzieh Amirmostofian, Michael D. Wiese, Paul H. Anderson, Peter Hoffmann   +3 more
wiley   +1 more source

CO2 and N2O Emissions From Vehicles in Seoul Megacity, South Korea: Insights From Mixing Ratio and Stable Isotope Ratios

Rapid Communications in Mass Spectrometry, Volume 40, Issue 18, 30 September 2026.
ABSTRACT Rationale Vehicular traffic is a major source of anthropogenic greenhouse gases in megacities; however, real‐world constraints on vehicle‐derived N2O emissions and their isotopic characteristics remain limited. Methods Air samples were collected from three tunnels and urban background sites (a university campus and mountain) in Seoul, South ...
Jeongeun Kim, Jinho Ahn, Sambit Ghosh, Sakae Toyoda, Shinji Morimoto, Hyunsuk Choi, Jaehoen Jung, Hungyu Lee   +7 more
wiley   +1 more source

Three New Calcium Formate Reference Materials for δ13C Measurements and a Redetermination of the R(13C/12C) Ratio for VPDB Based on Proton Nuclear Magnetic Resonance Measurements

Rapid Communications in Mass Spectrometry, Volume 40, Issue 18, 30 September 2026.
ABSTRACT Rationale Isotope ratio mass spectrometry (IRMS) and proton nuclear magnetic resonance (1H NMR) spectroscopy are independent techniques for determining the isotope ratio R(13C/12C) in organic compounds. However, the lack of suitable reference materials has limited intercalibration of results from these methods.
David W. Hoffman, Cornelia Rasmussen, Arndt Schimmelmann, Lauren T. Reid, Haiping Qi, Tyler B. Coplen   +5 more
wiley   +1 more source

interlaboratory comparison

Citation: 'interlaboratory comparison' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08081 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Quantification of Sulfonated Polyacrylamides by SEC‐UV in Produced Water: Validation and Oilfield Case Study

Journal of Applied Polymer Science, Volume 143, Issue 33, September 5, 2026.
Size exclusion chromatography with UV–vis detection, combined with ultrasonication pretreatment, enables sensitive detection and quantification of back‐produced polymer at very low concentrations in produced water. This approach supports reliable polymer monitoring and offers a practical route to improve surveillance of polymer flooding performance ...
Eduardo José Creatto, Luis Maqueira, Daniel da Silva Vicente, Thierry Leblanc, Nathaniel Terra, Lara Arinelli, Aurora Pérez‐Gramatges   +6 more
wiley   +1 more source

High Proportion of PNH Type II Neutrophils Is Associated With Thrombosis in Patients Displaying a PNH Clone ≥ 1%

American Journal of Hematology, Volume 101, Issue 9, Page 2311-2328, September 2026.
ABSTRACT The clinical significance of PNH Type II white blood cells (WBCs) remains unclear. We assessed the relative percentage (rel%) of Type II neutrophils in 355 patients with a PNH clone ≥ 1% on neutrophils enrolled by 33 flow cytometry laboratories in the 5‐year French nation‐wide multicenter prospective observational study.
Orianne Wagner‐Ballon, Anne‐Catherine Lhoumeau, Anna Raimbault, Camille Debord, Jean‐Philippe Vial, Valérie Soenen, Mélanie Pannetier, Edouard Bonneville, Elsa Bera, Caroline Bret, Nicolas Chapuis, Véronique Latger‐Cannard, Caroline Mayeur‐Rousse, Véronique Harrivel, François Vergez, Marie Loosveld, Juliette Vo Xuan, Stéphanie Mathis, Gérard Socié, Flore Sicre de Fontbrune, Régis Peffault de Latour, Bernard Drenou, Agathe Debliquis, Magali Le Garff‐Tavernier, on behalf of the French PNH working group CytHem‐HPN, Thomas Boyer, Mikaël Roussel, Marie Guillon, Sabrina Bouyer, Isabelle Kittler, Franck Geneviève, Julien Guy, Sophie Brun, Claude Capron, Sébastien Lachot, Francine Garnache‐Ottou, Richard Veyrat‐Masson, Corine Brunet, Caren Brumpt, Ludovic Lhermitte. Finally, Louis Terriou, Nicolas Blin   +41 more
wiley   +1 more source

Quality Challenges of the Chemical Analyses in Occupational Health

CHIMIA, 1996
Much emphasis is put on the precision and accuracy of sampling and analytical procedures in the modern practice of occupation hygiene. This is due to its importance in risk management in various industries, in the occupation health care and in ...
Michèle Berode, Rosemary Cosca, Chang Kong Huynh, Pierre Olivier Droz, Trinh Vu Duc, Michel Guillemin   +5 more
doaj   +2 more sources

Metrology in an ISO 15189 accredited medical biology laboratory

International Journal of Metrology and Quality Engineering, 2014
All French medical biology laboratories must be accredited according to ISO 15189 for all tests conducted. Metrology is therefore critical and covers a wide variety of areas.
Guichet C., Pellegrinelli S.
doaj   +1 more source

Analytical Metrics for Quality Assessment of Vanadium Electrolytes in Vanadium Flow Batteries: A Case Study

Energy Storage, Volume 8, Issue 6, September 2026.
ABSTRACT This case study investigates practical approaches for evaluating commercially available vanadium electrolytes (VEL) for vanadium flow battery applications. From the perspective of a potential electrolyte customer, a range of wet chemical and instrumental analytical methods was applied to characterize commercial electrolyte samples obtained ...
Nataliya Roznyatovskaya, Matthias Fühl, Martin Joos, Florian Geier, Jens Noack, Thomas Beyer   +5 more
wiley   +1 more source