Results 191 to 200 of about 4,774 (252)

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

First steps towards distinguishing Mediterranean vegetation root marks on bones: An experimental approach. [PDF]

PLoS One
Macho-Callejo A, Marin-Monfort D, Gutiérrez A, García-Morato S, Fernández-Jalvo Y.   +4 more
europepmc   +1 more source

Toward Metabolomics Analyses With Combined Capillary Vibrating Sharp‐Edge Spray Ionization and Atmospheric Pressure Chemical Ionization

Rapid Communications in Mass Spectrometry, Volume 40, Issue 17, 15 September 2026.
ABSTRACT Rationale The varied properties of metabolomics components dictate the tools used in mass spectrometry (MS) characterization including the selection of the ionization source. However, the ionization of select compounds limits characterization efficiency.
Madison Pursell, Adefolake Ojanuga, Chandrima Banerjee, Ephraim Ezeigbo, Mohammad Rahman, Vikum K. Dewasurendra, Thomas B. Hughart, Matthew B. Johnson, Mst Nigar Sultana, Xiaoting Guo, Gabriel Alexander, Priya Patel, Peng Li, Justin Legleiter, Stephen J. Valentine   +14 more
wiley   +1 more source

A method for forensic-ready intrusion detection using explainable learning, prediction-aware graph modeling, and counterfactual analysis. [PDF]

MethodsX
Guizani S, Xavier S, Ajayan A, Alalwan AI, Hamam H.   +4 more
europepmc   +1 more source

A New Approach to the Analysis of Dissolved Gases Using Passive Samplers, With Portable Mass Spectrometry and Gas Chromatography Techniques

Rapid Communications in Mass Spectrometry, Volume 40, Issue 17, 15 September 2026.
ABSTRACT Rationale Portable mass spectrometry systems such as miniRUEDI enable rapid and low‐cost field analysis of dissolved gases with high temporal resolution. However, they remain poorly suited for discrete small‐volume water samples. This study presents an approach based on passive sampling for groundwater and surface waters dissolved gases and ...
Antoine Picard, Florent Barbecot, Matéo Lacheux, Matthias S. Brennwald, José A. Corcho‐Alvarado   +4 more
wiley   +1 more source

Postmortem Interval Estimation Based on the Developmental Patterns of Hemilucilia segmentaria (Fabricius) (Diptera, Calliphoridae) and Peckia (Euboettcheria) anguilla (Curran & Walley) (Diptera, Sarcophagidae): a Case in Southeastern Brazil. [PDF]

Neotrop Entomol
Souza CM, da Costa-Silva V, Prado AM, Savino AG, Thyssen PJ.   +4 more
europepmc   +1 more source

Wavelet‐Based Hurst Exponent Estimation

WIREs Computational Statistics, Volume 18, Issue 3, September 2026.
The review explores how wavelet‐based methods for estimating the Hurst parameters have developed from their theoretical roots to real‐world applications in fields like biology, engineering, and telecommunications. The review aims to highlight key techniques, compare their strengths and limitations, and point out challenges that still need to be ...
Dixon Vimalajeewa, Fabrizio Ruggeri, Brani Vidakovic   +2 more
wiley   +1 more source

Forensic analysis and evaluation of file-wiping applications in Android OS. [PDF]

J Forensic Sci
Oh DB, Lim S, Lee S, Jo Y, Choi G, Kim B, Kim HK.   +6 more
europepmc   +1 more source

Characterization of Grape Cane Stilbenoids and Their Photo‐Degradation Products by HPLC‐DAD Coupled With Trapped Ion Mobility Spectrometry and High‐Resolution Tandem Mass Spectrometry

Rapid Communications in Mass Spectrometry, Volume 40, Issue 15, 15 August 2026.
ABSTRACT Rationale Bioactive (E)‐stilbenoids in vine extracts are prone to light‐induced transformation into the respective (Z)‐isomers and further degradation products, often resulting in a loss of bioactivity. We sought to study stilbenoid degradation beyond that of the well‐researched resveratrol due to the high diversity of stilbenoids in nature ...
Paul Besrukow, Friederike A. Schnitker, Ralf Schweiggert, Christof B. Steingass   +3 more
wiley   +1 more source

Data trace as the scientific foundation for trusted metrological data: a review for future metrology direction. [PDF]

PeerJ Comput Sci
Cao Z, Gao B, Liu Z, Xiong X, Wang B, Pei C.   +5 more
europepmc   +1 more source