Results 141 to 150 of about 116,815 (334)

Archaeometric Analyses of Medieval Pottery from the Lower Danube Region, Romania

open access: yesChemPlusChem, EarlyView.
This study is about the pottery manufacturing in the Lower Danube region during the Early Medieval period (8th–10th c. AD). Optical microscopy, Particle induced X‐ray emission, and X‐ray diffraction analyses performed on 32 representative ceramic shards excavated at Pantelimonu de Sus, Constanţa County, Romania, provide clues on the raw materials and ...
Constantin Haită   +3 more
wiley   +1 more source

Boron deficiency responses in maize (Zea mays L.) roots

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView., 2023
Abstract Background Boron (B) is an essential micronutrient for plants. Dicot plants respond to insufficient B supply by altering root architecture and root hair growth. How root systems of rather low‐B demanding monocot species such as maize (Zea mays L.) respond to B deficiency in terra has not been experimentally resolved, yet.
Manuela Désirée Bienert   +5 more
wiley   +1 more source

Retrospective Evaluation of Novel Synthetic Opioids and Xylazine Chronic Intake by Post‐Mortem Hair Testing

open access: yesDrug Testing and Analysis, EarlyView.
The study presents a validated UPLC‐MS/MS method applied for the detection of fentanyl, NPFs, xylazine, nitazenes in hair samples from 250 post‐mortem cases collected at the Jefferson County Coroner/Medical Examiner's Office (Birmingham, AL, USA). In 52% of the analyzed hair samples, fentanyl, its main metabolites, and related analogs were detected ...
Marco Ballotari   +6 more
wiley   +1 more source

Rapid and Simple Dispersive Liquid–Liquid Microextraction (DLLME) Sample Preparation for Propofol Analysis in Hair, Blood, and Urine by Gas Chromatography–Mass Spectrometry

open access: yesDrug Testing and Analysis, EarlyView.
Development and validation of an extraction method based on dispersive liquid–liquid microextraction for the analysis by GC–MS of propofol in three different biological samples (blood, urine, and hair). The proposed method is very simple and rapid.
Sara Odoardi   +4 more
wiley   +1 more source

Health impact in China of folate-biofortified rice [PDF]

open access: yes, 2010
A Stein   +18 more
core   +2 more sources

Quantitative Investigation of Nitrosamine Drug Substance‐Related Impurities (NDSRIs) Under Artificial Gastric Conditions by Liquid Chromatography–Tandem Mass Spectrometry and Structure–Activity Relationship Analysis

open access: yesDrug Testing and Analysis, EarlyView.
The study provides information about the impact of physiological gastric conditions on the unbeneficial occurrence of nitrosamine drug substance–related impurities (NDSRIs). Both main factors for nitrosation in the form of acidic conditions and the presence of nitrite were adequately chosen for triggering the conversion of drug compounds into NDSRIs ...
Matthias Vogel   +5 more
wiley   +1 more source

Characterising a New Cannabis Trend: Extensive Analysis of Semi‐Synthetic Cannabinoid‐Containing Seizures From Germany

open access: yesDrug Testing and Analysis, EarlyView.
A LC–MS/MS method has been validated for analysis of semi‐synthetic cannabinoids (SSC) and selected phytocannabinoids in seizures. Further SSC‐derivatives were implemented into the method for qualitative detection. The methodology was applied to a sample collective (n = 80) including cannabis flowers, resins, edibles and vape liquids.
Marica Hundertmark   +4 more
wiley   +1 more source

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