Results 171 to 180 of about 33,647 (305)

Neural Network‐Based Detection of Adulterants in Opioid Samples Using IR Absorption Spectroscopy

open access: yesDrug Testing and Analysis, Volume 18, Issue 5, Page 619-624, May 2026.
We construct a neural network for the classification of bromazolam and fluorofentanyl in illicit opioid samples. The model outperforms a random forest classifier and shows elevated performance for low concentration samples. ABSTRACT Community‐based drug checking services are challenged in their ability to reliably detect low concentration adulterants ...
Joshua Jai   +4 more
wiley   +1 more source

Reusable SERS Substrate Based on AuNP/PS‐b‐P2VP Nanocomposites With Photocatalytic Activity

open access: yesJournal of Raman Spectroscopy, Volume 57, Issue 5, Page 828-839, May 2026.
We developed a bifunctional SERS substrate by assembling AuNPs on PS‐b‐P2VP thin films, capable of both sensitive molecular detection and UV‐assisted self‐cleaning. The platform demonstrates excellent reusability over four adsorption–degradation cycles, driven by a hot‐hole‐mediated photocatalytic mechanism without semiconductors.
Moyra F. Vieira   +3 more
wiley   +1 more source

Influence of surfactant HLB values and commercial agricultural adjuvants on pesticide mimic penetration in plant leaves

open access: yesPest Management Science, Volume 82, Issue 5, Page 4771-4779, May 2026.
Penetration of a pesticide mimic into a spring onion leaf due to the presence of a surfactant additive. Abstract BACKGROUND Effective pesticide action is crucial for optimizing efficacy and minimizing environmental impact, particularly with the increasing reliance on systemic pesticides.
Begüm Demirkurt   +2 more
wiley   +1 more source

Monitoring Biogenic Amines: Comparative Assessment of Detection Methods for Key Market Marine and Freshwater Species

open access: yesJournal of Food Science, Volume 91, Issue 5, May 2026.
ABSTRACT Biogenic amines, primarily histamine, cadaverine, and putrescine, are important indicators of microbial spoilage and potential health risks. This review summarizes established and novel analytical methods for quantitatively determining biogenic amines in fish and fish products, along with their limits of detection in these complex matrices ...
Lasse Petersen
wiley   +1 more source

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