Química Nova, 2011 Analysis of seven pesticides in sediments was successfully achieved using comprehensive two-dimensional gas chromatography with micro-electron capture detection, as it provided higher sensitivity and less matrix interference.
Juliana Macedo da Silva +2 more
doaj +1 more source
Myopes have significantly higher serum melatonin concentrations than non-myopes [PDF]
, 2017 Purpose Experimental animal models of myopia demonstrate that higher melatonin (Mel) and lower dopamine (DA) concentrations actively promote axial elongation.
Ackermann +70 more
core +2 more sources
Derivative spectrophotometric method for determination of acyclovir in polymeric nanoparticles
Química Nova, 2012 A derivative spectrophotometric method was validated for quantification of acyclovir in poly (n-butylcyanoacrylate) (PBCA) nanoparticles. Specificity, linearity, precision, accuracy, recovery, detection (LOD) and quantification (LOQ) limits were ...
Guilherme Diniz Tavares +6 more
doaj +1 more source
Reporting the limits of detection and quantification for environmental DNA assays
Environmental DNA, 2020 Background Environmental DNA (eDNA) analysis is increasingly being used to detect the presence and relative abundance of rare species, especially invasive or imperiled aquatic species. The rapid progress in the eDNA field has resulted in numerous studies
Katy E. Klymus +13 more
doaj +1 more source
Micellar electrokinetic capillary chromatography—Synchronous monitoring of substrate and products in the myrosinase catalysed hydrolysis of glucosinolates [PDF]
, 2006 A micellar electrokinetic capillary chromatography (MECC) method has been developed for monitoring the myrosinase catalysed hydrolysis of 2-hydroxy substituted glucosinolates and the simultaneous formation of the corresponding degradation products ...
Bellostas, Natalia +2 more
core +1 more source
Corrigendum: Detection of Aflatoxins in Different Matrices and Food-Chain Positions
Frontiers in Microbiology, 2021 Gabriella Miklós +9 more
doaj +1 more source
Química Nova, 2012 This paper describes selective molecularly imprinted solid-phase extraction of ttMA from urine samples followed by derivatization and analysis by gas chromatography/mass spectrometry (GC/MS). The analytical calibration curve ranged from 0.3 to 7.0 mg L-1
Lidiane Silva Franqui +3 more
doaj +1 more source
An integrated targeted and untargeted approach for the analysis of ergot alkaloids in cereals using UHPLC - hybrid quadrupole time-of-flight mass spectrometry [PDF]
, 2015 An ultra-high performance liquid chromatography hybrid quadrupole time of flight (Q-TOF) mass spectrometry (MS) method is described for the simultaneous quantitative determination of common ergot alkaloids and the screening, detection and identification ...
Arroyo Manzanares, Natalia +5 more
core +2 more sources
Intentional Learning Theory: Validating Its Measurement
SAGE OpenThe purpose of this article is to describe and analyze the psychometric properties of the Learning Orientation Questionnaire (LOQ), which have not been previously published.
Sarah Mollman +2 more
doaj +1 more source
Stir Bar Sorptive Extraction of Volatile Compounds in Vinegar: Validation Study and Comparison With Solid Phase Microextraction [PDF]
, 2007 Stir bar sorptive extraction was evaluated for analysing volatiles in vinegar. The procedure developed shows detection and quantitation limits, and linear ranges adequate for analysing this type of compounds. The accuracy obtained was close to 100%, with
Alves +25 more
core +2 more sources