Caffeine
Mostrando 25-36 de 775 artigos, teses e dissertações.
-
25. EVALUATION OF COCAINE SAMPLES SEIZED IN THE STREETS OF THE STATE OF RIO DE JANEIRO, BRAZIL
Fifty-two samples of street cocaine seized in the state of Rio de Janeiro, from May 2016 to April 2017, were evaluated according to their purity, presence of inorganic and sugar diluents and concentration of pharmacologically active adulterants. Cocaine contents, as well as the adulterants caffeine, lidocaine and phenacetin, were evaluated by gas chromatogra
Quím. Nova. Publicado em: 27/05/2019
-
26. Profile of malignant hyperthermia susceptibility reports confirmed with muscular contracture test in Brazil
Resumo Justificativa e objetivo: Hipertermia maligna é uma síndrome farmacogenética hipermetabólica, autossômica dominante, com mortalidade entre 10%-20%, desencadeada por uso de anestésico inalatório halogenado ou relaxante muscular succinilcolina. O padrão-ouro para pesquisa de suscetibilidade à hipertermia maligna é o teste de contratura muscul
Rev. Bras. Anestesiol.. Publicado em: 25/04/2019
-
27. MUSCLE STRENGTH AND CAFFEINE SUPPLEMENTATION: ARE WE DOING MORE OF THE SAME?
RESUMO O objetivo desta revisão foi examinar na literatura atual os avanços feitos com relação aos efeitos da suplementação de cafeína sobre a força máxima e seus mecanismos associados a partir de 2010, ano em foram publicados dois importantes artigos. As buscas foram realizadas nas bases de dados PubMed, Medline, Scielo e Web of Science procurando-
Rev Bras Med Esporte. Publicado em: 2019-04
-
28. Efeitos agudos da ingestão de cafeína no desempenho em teste específico de pádel
Resumo Objetivou-se mensurar os efeitos da cafeína em teste de precisão de voleio específico (TPVE). Após 30 min da ingesta de 6mg•kg–1 de cafeína (CAF) ou placebo (PLA), 12 atletas fizeram duas sessões de treino de 45 min. Mediu-se resistência de preensão manual (RPM), foram registradas frequência cardíaca (FC) e percepção subjetiva de esfor
Rev. Bras. Ciênc. Esporte. Publicado em: 2019-03
-
29. Ten Years-Snapshot of the Occurrence of Emerging Contaminants in Drinking, Surface and Ground Waters and Wastewaters from São Paulo State, Brazil
Emerging contaminants have been considered one of the main concerns for ensuring the quality of water around the world. This work presents the results of 10 years of analyses carried out in the state of São Paulo (Brazil) that has the high population density and intense agricultural and industrial activities. In this work 58 compounds (9 hormones, 14 pharma
J. Braz. Chem. Soc.. Publicado em: 2019-03
-
30. VALIDATION OF COMPUTATIONAL METHODS APPLIED IN MOLECULAR MODELING OF CAFFEINE WITH EPITHELIAL ANTICANCER ACTIVITY: THEORETICAL STUDY OF GEOMETRIC, THERMOCHEMICAL AND SPECTROMETRIC DATA
Models validation in QSAR, pharmacophore, docking, and others, can ensure the accuracy and reliability of future predictions in design and selection of molecules with biological activity. In these study, the caffeine molecule was optimized using Hartree-Fock (HF) and Density Functional Theory (DFT/B3LYP) methods, with seven basis sets. Linear correlation dat
Quím. Nova. Publicado em: 2018-07
-
31. Comorbid addictive behaviors in disordered gamblers with psychosis
Objective: While it has been shown that disordered gamblers with psychosis are at increased risk for comorbid psychopathology, it is unclear whether this dual-diagnosis population is also at greater risk of problematic engagement with comorbid addictive behaviors. Methods: We tested for association between disordered gambling with psychosis and comorbid ad
Rev. Bras. Psiquiatr.. Publicado em: 11/06/2018
-
32. Caffeine in teas: levels, transference to infusion and estimated intake
Abstract Caffeine is naturally present in several foods, being one of the most consumed dietary ingredients in the world; however, excessive intake may cause health concerns. This study evaluated caffeine levels in teas and their infusions, the transference rate during brewing, and estimated caffeine intake from tea infusion. Brands and batches of 4 types of
Food Sci. Technol. Publicado em: 11/01/2018
-
33. Irrigation and Light Access Effects on Coffea arabica L. Leaves by FTIR-Chemometric Analysis
Coffee bean chemical compositions has been extensively studied. However, there is a small amount of research on other parts of the coffee plant, including leaves. Fourier transform infrared (FTIR) spectral profiles of Coffea arabica L. cv. IAPAR 59 leaf extracts from a simplex-centroid design were studied by principal component analysis (PCA) to evaluate the
J. Braz. Chem. Soc.. Publicado em: 2018-01
-
34. Potential antioxidant of brazilian coffee from the region of Cerrado
Abstract Coffee is one of the most consumed beverages in the world. Its chemical composition may have varied according to the planting site, degree of roasting, and method of preparation. This work aimed to evaluate the antioxidant activity of coffee from the region of Cerrado in the State of Minas Gerais, Brazil. The evaluation was performed with samples ro
Food Sci. Technol. Publicado em: 18/12/2017
-
35. Synthesis and Impregnation of Copper Oxide Nanoparticles on Activated Carbon through Green Synthesis for Water Pollutant Removal
In this article was developed a green synthesis of CuO nanoparticles on vegetal activated carbon (VAC), using pomegranate leaf extract as reducing and stabilizing agent in the removal of multiple pollutants. The impregnated carbons with CuO nanoparticles were characterized morphologically and structurally. The SEM and XRD analysis, after carbons modification
Mat. Res.. Publicado em: 11/12/2017
-
36. DETERMINAÇÃO RÁPIDA E SIMULTÂNEA DE PROPIFENAZONA, PARACETAMOL E CAFEÍNA UTILIZANDO ANÁLISE POR INJEÇÃO EM BATELADA COM DETECÇÃO AMPEROMÉTRICA
A fast and simple procedure for simultaneous determination of propyphenazone (PRO), paracetamol (PAR) and caffeine (CAF) was performed using batch injection analysis with multiple pulse amperometric detection (BIA-MPA). Three potentials pulses were selected for the analysis: +0.90 V/50 ms: only PAR was oxidized; +1.20 V/50 ms: oxidation of PAR and PRO withou
Quím. Nova. Publicado em: 2017-10