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Mostrando 1-12 de 182 artigos, teses e dissertações.
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1. Biological Properties of Experimental Methacrylate-Based Sealers Containing Calcium Phosphates
Resumo O objetivo deste estudo foi avaliar a biocompatibilidade de cimentos endodônticos experimentais à base de metacrilato contendo fosfato α-tricálcico ou hidroxiapatita nanoestruturada in vitro e in vivo. Cimentos experimentais de cura dual à base de metacrilato com a adição de fosfato de α-tricálcico (α-TCP) ou hidroxiapatita (HAp), a 10% em p
Braz. Dent. J.. Publicado em: 2021-02
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2. Copaifera multijuga, Copaifera pubiflora and Copaifera trapezifolia Oleoresins: Chemical Characterization and in vitro Cytotoxic Potential against Tumoral Cell Lines
Copaifera species (Fabaceae) comprises approximately 70 species of large trees, from which 16 can be found in Brazil. The oleoresins obtained from their trunk are widely used in Brazilian folk medicine, which display important antitumoral potential. Chemically, these oleoresins are mainly composed of a mixture of sesquiterpenes and diterpenes. In this paper
J. Braz. Chem. Soc.. Publicado em: 2020-08
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3. Antitumor effect of depsidones from lichens on tumor cell lines and experimental murine melanoma
Abstract Lichens have exhibited numerous biological activities, including growth inhibition of tumor cells. This study evaluated the antiproliferative activity of hypostictic and salazinic acids against tumor cell lines (B16-F10, PC-03, MCF7, HT-29, HEP-G2, K562 and 786-0) by the SRB assay in vitro and antitumor activity in experimental murine melanoma in vi
Rev. bras. farmacogn.. Publicado em: 17/10/2019
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4. Comportamientos de riesgo de suicidio y calidad de vida relacionada con la salud en estudiantes que ingresaron a una universidad mexicana
Abstract The objective was to determine if suicide-related behavior (SRB) and health-related quality of life (HRQL) are associated and whether this association is independent of substance use, violence, and sociodemographic variables. It involved a cross-sectional study with 1,229 Mexican university students: 62.4% women; 37.6% men; age 18.2± .6 years. The
Ciênc. saúde coletiva. Publicado em: 26/09/2019
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5. Population Changes of Eubacteria, Sulfate-Reducing Bacteria and Methanogenic Archaea in an Anaerobic Reactor Processing Ethanol Distillery Vinasse
Abstract The microbiological characterization by molecular techniques (DGGE and quantitative PCR) of Archaea, Bacteria domain and sulfate-reducing bacteria (SRB) from a laboratory scale Up-flow Anaerobic Sludge Blanket (UASB) processing sugar cane vinasse was performed during the operational phase with increasing organic loads. The organic load removal effic
Braz. arch. biol. technol.. Publicado em: 13/06/2019
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6. Microbiologically-Influenced Corrosion of 1020 Carbon Steel in Artificial Seawater Using Garlic Oil as Natural Biocide
This work aims evaluate the use of biocides in the microbiologically-influenced corrosion (MIC) of AISI 1020 carbon steel by sulfate-reducing bacteria (SRB) in artificial seawater. A natural biocide (garlic oil) and a commercial biocide (glutaraldehyde) were used to control the corrosion caused by these bacteria in artificial seawater. Microbial growth on th
Mat. Res.. Publicado em: 30/05/2019
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7. Effects of mineral trioxide aggregate, BiodentineTM and calcium hydroxide on viability, proliferation, migration and differentiation of stem cells from human exfoliated deciduous teeth
Abstract Objective: The aim of the study was to evaluate the effects of the capping materials mineral trioxide aggregate (MTA), calcium hydroxide (CH) and BiodentineTM (BD) on stem cells from human exfoliated deciduous teeth (SHED) in vitro. Material and Methods: SHED were cultured for 1 – 7 days in medium conditioned by incubation with MTA, BD or CH (1
J. Appl. Oral Sci.. Publicado em: 01/02/2018
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8. Carbon steel corrosion induced by sulphate-reducing bacteria in artificial seawater: electrochemical and morphological characterizations
ABSTRACT In this work, the corrosion behavior of carbon steel AISI 1020 was evaluated in artificial seawater in the presence of mixed sulfate-reducing bacteria (SRB) culture isolated from the rust of a pipeline. The corrosion evaluation was performed by electrochemical techniques (open circuit potential (Eocp), polarization curves and electrochemical impedan
Matéria (Rio J.). Publicado em: 2016-12
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9. Effects of low-level laser therapy on stem cells from human exfoliated deciduous teeth
ABSTRACT Low-Level Laser Therapy stimulates the proliferation of a variety of types of cells. However, very little is known about its effect on stem cells from human exfoliated deciduous teeth (SHED). Objective This study aimed to evaluate the influence of different laser therapy energy densities on SHED viability and proliferation. Material and Methods
J. Appl. Oral Sci.. Publicado em: 2016-08
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10. Vargas e a reorganização da vida rural no Brasil (1930-1945)
RESUMO Ainda é comum a crença de que a classe dominante rural negociou com o regime Vargas um pacto de exclusão. Tal acordo teria excluído das reformas corporativistas do período o mundo rural. Todavia, pesquisa nos discursos, leis e organizações patronais da época mostra haver nessas análises certo exagero na apreciação, uma vez que o regime empr
Rev. Bras. Hist.. Publicado em: 17/05/2016
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11. Ursane Saponins from the Stems of
Firmiana simplex and their Cytotoxic ActivityThree new ursane triterpene saponins, together with twelve known ursane triterpenes were isolated from the stems of
Firmiana simplex . The structures of the saponines were elucidated on the basis of spectroscopic and chemical methods. The cytotoxic activity of all compounds was evaluatedin vitro against lung adenocarcinomJ. Braz. Chem. Soc.. Publicado em: 2015-07
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12. Stevia rebaudiana loaded titanium oxide nanomaterials as an antidiabetic agent in rats
Abstract Stevia rebaudiana (Bertoni) Bertoni, Asteraceae, is a plant with hypoglycemic and antihyperlipidemic properties. S. rebaudiana (SrB) has become a lead candidate for the treatment of the diabetes mellitus. However, chronic administrations of S. rebaudiana are required to cause the normoglycemic effect. Importantly, nanomaterials in general and titani
Rev. bras. farmacogn.. Publicado em: 2015-04