Results 51 to 60 of about 402,101 (149)

Analytical Approaches to Address Challenges in the Analysis of Cannabinoids in Vascular Matrices Using Mass Spectrometry

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Phytocannabinoids are bioactive metabolites derived from the Cannabis sativa plant. They have garnered attention due to their recreational uses and therapeutic potential. Although various analytical strategies have been employed for their analysis, mass spectrometry (MS) coupled to chromatographic separation is superior due to its sensitivity ...
Radwa Mahmoud   +2 more
wiley   +1 more source

First 20 Years of Orbitrap Mass Spectrometry as the Mainstream Analytical Technique

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT This review traces the first 20 years of Orbitrap mass spectrometry as a mainstream high‑resolution and accurate‑mass (HR/AM) technology. It outlines the historical development of the Orbitrap analyzer, the evolution of major instrument families, and the key technological innovations that enabled its widespread adoption. Particular emphasis is
Alexander Makarov
wiley   +1 more source

Nontargeted Volatile Metabolite Screening and Microbial Contamination Detection in Fermentation Processes by Headspace GC-IMS

open access: yes
Gas chromatography combined with ion mobility spectrometry (GC-IMS) is a powerful separation and detection technique for volatile organic compounds (VOC). This combination is characterized by exceptionally low detection limits in the low ppbv range, high
Philipp Weller (3188676)   +3 more
core   +1 more source

Quality identification of Amomi fructus using E-nose, HS-GC-IMS, and intelligent data fusion methods

open access: yesFrontiers in Chemistry
Amomi fructus (AF) has been used for both medicinal and food purposes for centuries. However, issues such as source mixing, substandard quality, and product adulteration often affect its efficacy.
Pan-Pan Zhang   +18 more
doaj   +1 more source

Analysis of Carbohydrates and Glycoconjugates by Matrix‐Assisted Laser Desorption/Ionization Mass Spectrometry: An Update for 2023–2024

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT The use of MALDI mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this comprehensive review is the twelfth update of the original article published in 1999 and brings coverage of the literature to the end of 2024.
David J. Harvey
wiley   +1 more source

Mass Spectrometry in Authentication and Forensic Approaches for Determining the Origin of Hazardous Chemicals

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Identification of a chemical agent yields insights into its physicochemical properties. By examining the intrinsic characteristics and environment of a compound, information about its history can be gathered. The main objective of authentication/forensic approaches to chemicals is to trace the history of the compound's origin, regardless of ...
Carla Orlandi   +6 more
wiley   +1 more source

Untargeted and Targeted Discrimination of Honey Collected by Apis cerana and Apis mellifera Based on Volatiles Using HS-GC-IMS and HS-SPME-GC–MS

open access: yes, 2019
Fraudulent acts regarding honey authenticity that use Apis mellifera honey as a substitute for Apis cerana honey have garnered considerable concern in China and triggered a trust crisis from consumers.
Jinhui Zhou (740421)   +5 more
core   +1 more source

Fingerprint analysis of volatile organic compounds in different varieties ofcoffee beans by gas chromatography-ion mobility spectrometry [PDF]

open access: yesZhongguo niangzao
In this study, the volatile flavor substances of 4 different varieties of raw coffee beans (A1, B1, C1, D1) and the 4 roasted coffee beans (A2, B2, C2, D2) were tested and analyzed by headspace gas chromatography (HS-GC)-ion migration spectrometry (IMS),
YANG Li, YANG Weixing, LI Xi, FAN Zhuqing, LI Huajian, LI Xueling
doaj   +1 more source

Evaluation of floral volatile patterns in the genus Narcissus using gas chromatography–coupled ion mobility spectrometry

open access: yesApplications in Plant Sciences, 2023
Premise Daffodils (Narcissus, Amaryllidaceae) are iconic ornamentals with a complex floral biology and many fragrant species; however, little is known about floral plant volatile organic compounds (pVOCs) across the genus and additional sampling is ...
Florian Losch   +3 more
doaj   +1 more source

Weibull Variational Autoencoder for Remaining Useful Life Prediction

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT Remaining useful life (RUL) prediction is a critical technology for preventing unexpected failures and reducing maintenance costs in modern industrial systems. However, traditional model‐based approaches are limited by the need for explicit mathematical modeling of degradation mechanisms, while data‐driven methods often require large‐scale ...
JunWoo Yu   +4 more
wiley   +1 more source

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