Specie
Mostrando 1-12 de 472 artigos, teses e dissertações.
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1. Evaluation of moisture content variation on strength and stiffness properties of Cedrella sp. wood specie
Abstract In order to evaluate the influence of moisture content on wood physical and mechanical properties, the present research analyzed the influence of moisture content variation on Cedrella sp. on 12 strength and stiffness properties, considering 12% moisture content up to Fiber Saturation Point (FSP) were considered. Brazilian Standard consider a correc
REM - International Engineering Journal. Publicado em: 2022
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2. Optimization of Methodology for Determination of Inorganic Chromium Species in Sewage Sludge Samples by HPLC-ICP-MS/MS
This study developed a methodology for extracting and speciating CrIII and CrVI in sewage sludge by high performance liquid chromatography, inductively coupled plasma tandem mass spectrometry (HPLC-ICP-MS/MS). The optimal procedure was solid-liquid extraction in a water bath with stirring at 50 °C for 16 h and 50 mmol L−1 ethylenediaminetetraacetic acid (
J. Braz. Chem. Soc.. Publicado em: 2020-12
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3. Influence of the pH regulator on the dolomite hydrophobization process
Abstract A study was carried out to investigate the combined effect of released ions in the pulp by pH regulator and mineral surface on dolomite flotation. The tests were carried out using a dolomite sample in a bench flotation cell with automatic froth remover. Zeta potential measurements, solution conductivity and FTIR analysis were done to support the int
REM, Int. Eng. J.. Publicado em: 2020-09
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4. Atomic force microscopy evidences of bacterial cell damage caused by propolis extracts on E. coli and S. aureus
Abstract The interaction of the aqueous extract of green propolis with the bacterial envelope was investigated using atomic force microscopy on E. coli and S. aureus, as Gram-negative and Gram-positive model microorganisms. The bacteria were incubated in the extracts with variable proportions of water/ethanol, i.e., in different concentrations of total pheno
Food Sci. Technol. Publicado em: 2020-03
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5. Atomic force microscopy evidences of bacterial cell damage caused by propolis extracts on E. coli and S. aureus
Abstract The interaction of the aqueous extract of green propolis with the bacterial envelope was investigated using atomic force microscopy on E. coli and S. aureus, as Gram-negative and Gram-positive model microorganisms. The bacteria were incubated in the extracts with variable proportions of water/ethanol, i.e., in different concentrations of total pheno
Food Sci. Technol. Publicado em: 20/12/2019
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6. Sinopse das espécies do gênero Polyphlebium (Hymenophyllaceae) no Brasil
Resumo É apresentada a sinopse das espécies do gênero Polyphlebium ocorrentes no Brasil, com breves descrições, distribuição geográfica, imagens das estruturas morfológicas diagnósticas, comentários acerca das espécies, bem como uma chave de identificação. São reconhecidas quatro espécies que ocorrem principalmente nos biomas Mata Atlântica
Rodriguésia. Publicado em: 05/12/2019
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7. Contributions of RNA-seq to improve in vitro embryo production (IVP)
Abstract In Vitro Embryo Production (IVP) is widely used to improve the reproductive efficiency of livestock animals, however increasing the embryo development rates and pregnancy outcomes is still a challenge for some species. Thus, the lack of biological knowledge hinders developing specie-specific IVP protocols. Therefore, the contributions of RNA-seq to
Anim. Reprod.. Publicado em: 25/11/2019
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8. In vitro embryo production in buffaloes: from the laboratory to the farm
Abstract Transvaginal follicular aspiration technique together with in vitro embryo production are the biotechnological alternatives currently available to support genetic improvement breeding programs in buffalo species. However, aspects related to animal management, lack of knowledge of the metabolic needs and biochemical peculiarities of gametes and embry
Anim. Reprod.. Publicado em: 25/11/2019
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9. Validação de método analítico por ELL-CG-EM para detecção de trialometanos decorrentes da cloração de águas contendo Microcystis
RESUMO Estudos demonstram que a utilização do cloro em estações de tratamento de água (ETA) pode contribuir para a formação de subprodutos orgânicos halogenados indesejados, tais como os trialometanos (TAM), quando há presença de matéria orgânica algogênica, composta de algas e cianobactérias. A Microcystis aeruginosa é uma espécie de cianoba
Eng. Sanit. Ambient.. Publicado em: 25/11/2019
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10. Tamaulipan thornscrub after fire: an analysis of the composition of species
Resumo Os incêndios florestais são um elemento natural em muitos ecossistemas terrestres, no México uma das principais causas de perda de cobertura vegetal está relacionada a eles, no entanto, nenhuma pesquisa foi realizada nas comunidades de espinheiros de Tamaulipan sobre as estratégias regenerativas pós-fogo de espécies de plantas, portanto, é imp
Braz. J. Biol.. Publicado em: 25/11/2019
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11. Genetic diversity of bushy cashew (Anacardium humile A. St.-Hil.) based on characteristics of fruits
Resumo O conhecimento da variabilidade genética entre genótipos de Cajuzinho-do-cerrado é importante para estabelecer estratégias de pré-melhoramento e uso em programa de melhoramento. Objetivou-se com este trabalho avaliar a diversidade genética de Cajuzinho-do-cerrado por meio da avaliação de características físicas, químicas e físico-química
Rev. Bras. Frutic.. Publicado em: 14/11/2019
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12. Phytotoxic potential of aqueous leaf extract of Tocoyena formosa and Rudgea viburnoides
ABSTRACT Plants have organic components produced as secondary metabolites able to positively or negatively interfere on normal development of other species. The objective of this research was to determine the phytotoxic effect of aqueous leaf extract from two species Rubiaceae family: Tocoyena formosa and Rudgea viburnoides on the germination and initial dev
Rev. Ceres. Publicado em: 11/11/2019