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Mostrando 25-36 de 6113 artigos, teses e dissertações.
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25. Simultaneous GC-NCI-MS Determination of Persistent Organic Pollutants and Current-Use Pesticides in Breast Milk Samples
To preserve human health, persistent organic pollutants (POPs) and current-use pesticides (CUPs) should be monitored in fatty tissues, including breast milk. Therefore, this study aimed to optimize sample preparation conditions using a 32 factorial design for the determination of POPs and CUPs by gas chromatography coupled to mass spectrometry with negative
Journal of the Brazilian Chemical Society. Publicado em: 2022
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26. EFFECT OF DIFFERENT INTERVAL SPEED TRAINING ON ATHLETE REACTION
RESUMO Introdução: Treinamento intermitente de alta intensidade (HIIT) classificado em primeiro lugar na ACSM “2013 Global Training Methodology Survey”. Objetivo: Explorar a influência de diferentes intervalos de treinamento de velocidade na velocidade de reação do atleta. Métodos: Dezesseis ciclistas do sexo masculino foram divididos randomicam
Revista Brasileira de Medicina do Esporte. Publicado em: 2022
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27. AN ADAPTED UNMANNED AERIAL VEHICLE FOR ENVIRONMENTAL WATER SAMPLING
In this work an unmanned aerial vehicle (UAV) was adapted to be used as an environmental tool to collect water samples of sea, estuary, and mangrove for further analysis by gas chromatography with a mass detector (GC-MS). The sampling automated system was based on a microcontroller, a solenoid valve, and a peristaltic mini-pump that was coupled to a quadcopt
Química Nova. Publicado em: 2022
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28. Molecular Docking in silico Analysis of Brazilian Essential Oils Against Host Targets and SARS-CoV-2 Proteins
The inhibitory activity of thirty-one sesquiterpenes identified from Brazilian essential oils (Copaifera langsdorffii Desf., Croton cajucara Benth. and Siparuna guianensis Aublet.) were analyzed by in silico molecular docking. The compounds were characterized by gas chromatography-mass spectrometry (GC-MS) and gas chromatography with flame-ionization detecti
Journal of the Brazilian Chemical Society. Publicado em: 2022
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29. Effects of concert music on cognitive, physiological, and psychological parameters in the elderly with dementia: a quasi-experimental study
RESUMO. Intervenções não farmacológicas, como o uso da música, têm-se mostrado importantes meios potenciais de controlar os sintomas e sinais adversos decorrentes das enfermidades crônicas já instaladas em idosos com demência. Objetivos: Analisar o efeito da música de concerto sobre a cognição, parâmetros fisiológicos e sintomas comportamentai
Dementia & Neuropsychologia. Publicado em: 2022
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30. Use of multisensory stimulation in institutionalized older adults with moderate or severe dementia
RESUMO. Um programa de estimulação multissensorial pode auxiliar no manejo dos sintomas comportamentais e psicológicos da demência. Objetivo: Investigar os efeitos do programa de estimulação multissensorial sobre o comportamento, o humor e parâmetros biomédicos de idosos com demência moderada e grave, quando comparados a um grupo controle não sub
Dementia & Neuropsychologia. Publicado em: 2022
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31. Volatile Metabolomics from Cashew Leaves: Assessment of Resistance Biomarkers Associated with Black Mold (Pilgeriella anacardii Arx & Müller)
Black mold, a disease caused by the fungus Pilgeriella anacardii Arx & Müller, affects cashews (Anacardium occidentale). Some cashew clones are more resistant to the pathogen; however, little is known about the chemical profile responsible for this trait. The investigation of volatile organic compounds (VOCs) from leaves of dwarf cashew clones resistant (BR
Journal of the Brazilian Chemical Society. Publicado em: 2022
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32. Does length of time since diagnosis in Parkinson’s disease influence heart rate variability? A cross-sectional study
RESUMO Antecedentes: As alterações intrínsecas da doença de Parkinson (DP) afetam o sistema nervoso autônomo, e a evolução da doença pode agravar o quadro inicial. Em outras populações, o impacto do tempo desde o início da doença na modulação autonômica já foi estudado, mas na DP isso ainda não foi investigado. Objetivo: Investigar o impac
Arquivos de Neuro-Psiquiatria. Publicado em: 2022
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33. Dose-dependent effects of neem crude extract on human dental pulp cell and murine osteoblast viability and mineralization
Resumo O Neem tem sido utilizado como medicamento devido às suas propriedades benéficas, tais como os efeitos antimicrobianos. Os produtos Neem para aplicação oral estão a aumentar. Antes da recomendação para uso terapêutico no ser humano, os seus efeitos nas atividades celulares precisam ser examinados. Por conseguinte, o objectivo deste estudo era
Brazilian Dental Journal. Publicado em: 2022
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34. Unveiling the Bacterial Sesquiterpenome of Streptomyces sp. CBMAI 2042 Discloses Cyclases with Versatile Performances
Terpenes are the most abundant class of natural product that exist in nature. They possess a myriad of industrial applications including pharmaceutical, perfumery and flavors, bulk chemicals, and fuel. Intriguingly, until today, the vast majority of characterized terpenoids have been isolated from plants and fungi, and only in recent years bacteria were foun
Journal of the Brazilian Chemical Society. Publicado em: 2022
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35. Chromatographic Profiles of Ethyl Acetate Extracts Produced by Bacillus sp. Collected from the Mangroves in the Brazilian Northeast
The genus Bacillus is Gram-positive, anaerobic or aerobic facultative bacteria, often described to be associated with the mangrove rhizosphere. Secondary products of their metabolism, coming from places affected by pollution and environmental stresses, such as mangroves, have been attracting interest from the biotechnological point of view. In view of this s
Journal of the Brazilian Chemical Society. Publicado em: 2022
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36. Fast Catalytic Pyrolysis of Tetradecanoic Acid: Formation of Ketones as Intermediate Compounds in the Production of Hydrocarbons
This work aimed to compare two different catalysts in the production of a long chain ketone, intermediate in the production of hydrocarbons, during pyrolysis of tetradecanoic acid as a model fatty acid. The studied variables were the temperature, 450 and 600 ºC, and catalysts, γ-Al2O3 and Nb2O5, the latter has never been studied under such conditions. Pyro
Journal of the Brazilian Chemical Society. Publicado em: 2022