Search Results - "Aquino Neto, Francisco Radler"
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1
Qualitative transformations of street‐seized ecstasy over a decade: A case study in Rio de Janeiro (Brazil)
Published in Journal of forensic sciences (01-07-2024)“…The illegal drug market is constantly evolving, with new drugs being created and existing ones being modified. Adulterants are often added to the mix, and the…”
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2
Determination of adulterants in whey protein food supplements by liquid chromatography coupled to Orbitrap high resolution mass spectrometry
Published in Brazilian Journal of Food Technology (01-01-2019)“…Liquid chromatography coupled to Orbitrap high resolution mass spectrometry was shown to be an adequate technique to control the adulteration of whey protein…”
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3
Feasibility study for the development of a certified reference material of nitrofuran metabolites in chicken breast muscle from incurred samples
Published in Measurement : journal of the International Measurement Confederation (01-12-2018)“…•The present work involves a study to develop a metabolite-incurred reference material.•Water content and mass fraction of nitrofuran metabolites in chicken…”
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4
Extraction of Diterpene-Phytochemicals in Raw and Roasted Coffee Beans and Beverage Preparations and Their Relationship
Published in Plants (Basel) (01-04-2023)“…Cafestol and kahweol are expressive furane-diterpenoids from the lipid fraction of coffee beans with relevant pharmacological properties for human health. Due…”
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5
Symptoms prevalence among office workers of a sealed versus a non-sealed building: Associations to indoor air quality
Published in Environment international (01-11-2009)“…An increasing number of complaints related to time spent in artificially ventilated buildings have been progressively reported and attributed, at least in…”
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6
Non‐targeted acquisition strategy for screening doping compounds based on GC‐EI‐hybrid quadrupole‐Orbitrap mass spectrometry: A focus on exogenous anabolic steroids
Published in Drug testing and analysis (01-03-2018)“…This is a first look at a non‐targeted screening method based on Orbitrap gas chromatography–mass spectrometry (GC–MS) technology for a large number of banned…”
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7
Hansen Solubility Parameters Applied to the Extraction of Phytochemicals
Published in Plants (Basel) (01-08-2023)“…In many analytical chemical procedures, organic solvents are required to favour a better global yield upon the separation, extraction, or isolation of the…”
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Distribution of polycyclic aromatic hydrocarbons in surface sediments and waters from Guanabara Bay, Rio de Janeiro, Brazil
Published in Journal of the Brazilian Chemical Society (2007)“…Polycyclic aromatic hydrocarbons (PAHs) were identified and quantified in sediment and water samples from 12 sites in the north-northeast region of the…”
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9
Development and validation of a method for the analysis of tetracyclines in chicken-muscle by liquid chromatography-electrospray-mass spectrometry in tandem (LC-ESI-MS/MS)
Published in Química Nova (2011)“…A LC-ESI-MS/MS method was developed and validated according to the European Union decision 2002/657/EC, for the determination of tetracyclines (TCs) in…”
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10
New approaches to monitor semi-volatile organic compounds released during coffee roasting using flow-through/active sampling and comprehensive two-dimensional gas chromatography
Published in Food research international (01-05-2019)“…A novel dynamic approach is described to profile volatile organic compound (VOC) and semi-VOC (SVOC) emission during coffee roasting aimed at analysing…”
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11
Quantitative evaluation of sedimentary organic matter from Laguna Mar Chiquita, Argentina
Published in Organic geochemistry (01-04-2008)“…Laguna Mar Chiquita (Central Argentina) is a highly variable saline lake particularly suitable for palaeolimnological studies. The most recent (20th century)…”
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12
Development and validation of a multidimensional gas chromatography/combustion/isotope ratio mass spectrometry-based test method for analyzing urinary steroids in doping controls
Published in Analytica chimica acta (07-11-2018)“…The misuse of the steroid hormone testosterone for performance enhancement has been frequently reported in the past, and its administration is prohibited in…”
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13
Lipase-catalysed esters synthesis of cafestol and kahweol
Published in Food chemistry (01-09-2018)“…•A preparative method was developed to obtain 1.290 g of cafestol and kahweol (C&K).•Lipase-catalysed esterification was established by Central Composite…”
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14
Use of quantitative 1H and 13C NMR to determine the purity of organic compound reference materials: a case study of standards for nitrofuran metabolites
Published in Analytical and bioanalytical chemistry (01-03-2021)“…Comparability of measurement results and their metrological traceability to the International System of Units (SI) are fundamental tools to ensure reliable…”
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15
No association between psychiatric symptoms and doses of anabolic steroids in a cohort of male and female bodybuilders
Published in Drug testing and analysis (01-06-2022)“…The use of androgenic‐anabolic steroids (AAS) can be associated with psychiatric symptoms such as insomnia, anxiety and increased aggressiveness. Although…”
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16
Extracellular Vesicles From Stored Red Blood Cells Convey Heme and Induce Spic Expression on Human Monocytes
Published in Frontiers in immunology (18-05-2022)Get full text
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17
Optimization of an online heart-cutting multidimensional gas chromatography clean-up step for isotopic ratio mass spectrometry and simultaneous quadrupole mass spectrometry measurements of endogenous anabolic steroid in urine
Published in Drug testing and analysis (01-11-2016)“…Measuring carbon isotope ratios (CIRs) of urinary analytes represents a cornerstone of doping control analysis and has been particularly optimized for the…”
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18
Is zebrafish (Danio rerio) a tool for human‐like metabolism study?
Published in Drug testing and analysis (01-11-2017)“…One of the greatest challenges in anti‐doping science is the large number of substances available and the difficulty in finding the best analytical targets to…”
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19
Running ahead of doping: analytical advances and challenges faced by modern laboratories ahead of Rio 2016
Published in Bioanalysis (01-09-2016)Get full text
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20
Atmospheric distribution of organic compounds from urban areas near Olympic games sites in Rio de Janeiro, Brazil
Published in Microchemical journal (01-07-2017)“…The hydrocarbon composition of atmospheric particulate matter (PM) and Volatile Organic Compounds (VOC) from urban areas of Rio de Janeiro City were studied to…”
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