Results 121 to 130 of about 33,609 (216)

Thermal persistence and physicochemical modification of inorganic gunshot residue (IGSR)

open access: yesJournal of Forensic Sciences, EarlyView.
Abstract In the medicolegal context, GSR analysis plays a key role in clarifying the dynamics of firearm‐related deaths, including lesion identification and firing distance determination. However, postmortem alterations of the body, such as thermal exposure, may influence the analysis of lesions and complicate interpretation.
Gianmarco Argentiero   +8 more
wiley   +1 more source

Metabarcoding replicate detection frequency tracks ddPCR copy number for cod and herring eDNA in ancient marine sediments

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Detecting environmental DNA (eDNA) from rare or low‐abundance aquatic species remains a major challenge, particularly when it is highly degraded, present at low concentrations, and dominated by DNA from non‐target taxa. These challenges are further amplified in sedimentary ancient DNA (sedaDNA) studies, where thousands of years can degrade ...
Elena Baños   +3 more
wiley   +1 more source

Systematic Optimization of an SLE-DAPTAD LC-MS/MS Workflow for Simultaneous Quantification of Low-Abundance Vitamin D<sub>3</sub> Metabolites in Plasma. [PDF]

open access: yesRapid Commun Mass Spectrom
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.
Amirmostofian M   +3 more
europepmc   +2 more sources

Weighted prevalence of biochemically verified substance use in healthy adolescents across the USA

open access: yesAddiction, EarlyView.
Abstract Background and aims Adolescent substance use is a significant public health concern, though the scope of the problem is difficult to ascertain given reliance on self‐reported substance use information. Recent, large cohort studies in adolescents and young adults suggest underreporting of substance use.
Natasha E. Wade   +14 more
wiley   +1 more source

Occurrence of ergot alkaloids and deoxynivalenol in Brazilian wheat and cattle feed determined by UHPLC-MS/MS. [PDF]

open access: yesMycotoxin Res
Rosa da Silva C   +7 more
europepmc   +1 more source

Sex Steroids Measurement by Mass Spectrometry in Hypogonadal Men in a Real‐World Setting: Serum Estradiol (E2) and E2 to Total Testosterone Ratio Do Not Differ Between Patients With Klinefelter Syndrome and Non‐Klinefelter Syndrome Hypogonadism

open access: yesAndrology, EarlyView.
ABSTRACT Background Traditionally, Klinefelter syndrome (KS) was considered a clinical condition associated with hyperestrogenism. Aim To compare circulating sex steroids, particularly estrogens, in a cohort of KS and non‐KS hypogonadal men. Materials and Methods A cohort of hypogonadal men, treated and untreated, was prospectively enrolled in a real ...
Daniele Renda Livraghi   +8 more
wiley   +1 more source

6‐Nitrodopamine as a Novel Mediator of Prostatic Smooth Muscle Function in Mouse and Human

open access: yesAndrology, EarlyView.
ABSTRACT Background Epithelium‐derived catecholamines contribute to local regulation of genitourinary smooth muscle function, but the role of the endogenous 6‐nitrodopamine (6‐ND) in the prostate remains unknown. Objectives To determine whether 6‐ND is produced by mouse and human prostate and its role in smooth muscle regulation.
Alline Araujo Curiel   +12 more
wiley   +1 more source

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