1. Morphological characterization of fruits, endocarp, seed and seedlings of cajá-manga (Spondias dulcis)

ABSTRACT The Cerrado biome has several species that can generate income, and the cajá-manga is one of these native species with great potential but with scarce information about its morphological characterization. Thus, this work aimed to characterize the fruit, endocarp, seeds, and seedlings of cajá-manga morphologically. The fruits were evaluated by the

Rev. Ceres. Publicado em: 2021-06

2. Effect of Preparation Additives on the Antimicrobial Activity and Cytotoxicity of Polypyrrole

The search for new biomaterials has increased continuously in recent years and, in this context, the application of polypyrrole (PPy) as a promising material for this function has been reported as a result of positive responses, such as bioactivity and biocompatibility. In this study, PPy was obtained through modifications/adaptations made in methodologies o

J. Braz. Chem. Soc.. Publicado em: 2021-06

3. Heat treatment analysis of ASTM A106 steel spheroidization and erosive wear at high temperatures

Abstract The microstructures of steels are altered when exposed to high working temperatures for long periods, which results in varied physical and chemical proprieties. This study evaluates the erosive wear behavior of ASTM A106 steel after it is exposed to high temperatures for long durations. Samples of normalized ASTM A106GrB steel were placed in a muffl

REM, Int. Eng. J.. Publicado em: 2020-12

4. Isolation, identification and characterization of endophytic fungi of Bambusa oldhamii munro applied as antagonists to Pyricularia oryzae

ABSTRACT Endophytic fungi, in addition to improving plant development, may produce antimicrobial substances that can inhibit pathogens. The objective of this study was to isolate and characterize endophytic fungi of Bambusa oldhamii and evaluate in vitro antagonism to Pyricularia oryzae. Fungal isolates of B. oldhamii shoots were purified and identified by n

Rev. Ceres. Publicado em: 2020-08

5. Pyrolysis of the Caupi Bean Pod (Vigna unguiculata): Characterization of Biomass and Bio-Oil

The use of agricultural residues for the production of bio-oil is an important alternative to the use of fossil fuels. In this study, the Caupi bean pod (Vigna unguiculata) was characterized and used as biomass in the production of bio-oil. This biomass was evaluated in terms of physicochemical, morphological (scanning electron microscopy (SEM)), and thermal

J. Braz. Chem. Soc.. Publicado em: 2020-06

6. Evaluation of Carbon Nanotubes/Polyaniline Thin Films for Development of Electrochemical Sensors

Thin films of multiwalled carbon nanotubes/polyaniline nanocomposites (CNT/PAni) were synthesized through the liquid/liquid (L/L) interfacial route, deposited over glass substrates, and evaluated through cyclic voltammetry and amperometry as electrochemical sensor, using L-ascorbic acid as probe. Films with three different CNT/PAni ratios have been prepared.

J. Braz. Chem. Soc.. Publicado em: 2020-06

7. Morphological characterization of pollen grains of Brazilian species of Bombacoideae (Malvaceae s.l.)

ABSTRACT The pollen grains of 15 species belonging to five genera (Ceiba Mill., Eriotheca Schott & Endl., Pachira Aubl., Pseudobombax Dugand, and Rhodognaphalopsis A. Robyns) of the subfamily Bombacoideae (Malvaceae s.l.) were acetolysed, measured, described and photomicrographed under light microscopy and scanning and transmission electron microscopy, in or

Acta Bot. Bras.. Publicado em: 2020-03

8. Evaluation of the Influence of the Substituting Cation on the Structural and Morphological Properties of the New Garnet Sm3−xREExFe5O12 (REE = Dy, Gd and Lu)

Rare earth garnets (REE3Fe5O12) have magnetic-electric and optical properties that can be used in transmitters, microwave and data storage devices. These properties depend mainly on partial or total substitution of the cationic sites, as well as by the synthesis method used. Therefore, in this work was studied the influence of the substituting cation on the

Mat. Res.. Publicado em: 20/01/2020

9. Characterization of Nanocellulose Obtained from Cereus Forbesii (a South American cactus)

Crystalline cellulose nanofibers are obtained from the bark of Cereus Forbesii, a cactus native to the arid areas of South America. The obtaining of cellulose nanofibers was carried out in several steps: pretreatment of the raw material, elimination of hemicellulose and lignin to obtain cellulose, and an acid hydrolysis of cellulose to obtain crystalline cel

Mat. Res.. Publicado em: 20/01/2020

10. POLYETHERIMIDE/POLYVINYLPYRROLIDONE HOLLOW-FIBER MEMBRANES FOR USE IN HEMODIALYSIS

Abstract In this study, polyetherimide/polyvinylpyrrolidone (PEI/PVP) hollow fiber membranes (HFMs) were synthesized by the phase inversion method. The synthesized PEI/PVP membranes were characterized by morphological analysis and transport properties (hydraulic permeability and solute rejection coefficient). Their performance in uremic solutes separation wa

Braz. J. Chem. Eng.. Publicado em: 13/01/2020

11. Cation Vacancies in NiFe2O4 During Heat Treatments at High Temperatures: Structural, Morphological and Magnetic Characterization

Nickel ferrite (NiFe2O4) was synthesized by mixing stoichiometric amounts of α-Fe2O3 and NiO using mechanical milling and heat treatments at high temperatures. The physical characterization of the samples was carried out using X-ray diffraction, infrared and Raman spectroscopies, Mössbauer spectrometry, magnetization measurements, scanning electron microsc

Mat. Res.. Publicado em: 20/12/2019

12. Morphological, chemical and physiological characterization of Amaranthus spp. Seeds

Resumo: As espécies do gênero Amaranthus possuem grande potencial para alimentação humana, devido às suas propriedades nutricionais e funcionais, entretanto existem poucos estudos fitotécnicos com a cultura inviabilizando o seu cultivo. Visando incentivar a produção dessas espécies objetivou-se com essa pesquisa avaliar e distinguir as característi

J. Seed Sci.. Publicado em: 05/12/2019