RSS 1.0Artigos - Física e Química - FEIS
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Novel pulp capping material based on sodium trimetaphosphate: synthesis, characterization, and antimicrobial properties
Franzin, Nayara Rodrigues Sartori
; Sostena, Michela Melissa Duarte Seixas ; ; Moura, Marcia Regina ; ; Hosida, Thayse Yumi ; Delbem, Alberto Carlos Botazzo ; Moraes, João Carlos Silos (Journal of applied oral science : revista FOB, 2022) [Artigo]
OBJECTIVES: To evaluate the mechanical, physicochemical, and antimicrobial properties of four different formulations containing micro- or nanoparticles of sodium trimetaphosphate (mTMP and nTMP, respectively). METHODOLOGY: ... -
Graphite nanosheet/polyaniline nanocomposites: Effect of in situ polymerization and dopants on the microstructure, thermal, and electrical conduction properties
Martin, Eliza Sbrogio; Sanches, Alex Otávio ; ; ; de Paula, Fernando Rogério ; Malmonge, José Antonio (Journal of Applied Polymer Science, 2022) [Artigo]
This work proposed a study of in situ polymerization of polyaniline (Pani) in the presence of graphite nanosheets (GNS). The study focused on the different physical–chemical interactions promoted among them during the Pani ... -
Influence of synthesis temperature and atmosphere on Te4+ ion formation in lithium tellurite glass
; ; Costa, Francine Bettio; Silos Moraes, João Carlos ; ; ; ; (Ceramics International, 2021) [Artigo]
In this research, the influence of synthesis process under Te4+ ion formation in lithium tellurite glass was investigated based in their optical and structural characteristics. The same 80TeO2 + 20Li2O nominal composition ... -
The infrared spectrum of Ch3Oh: Evidence for state mixings
; Moraes, João Carlos Silos; ; ; ; ; (Proceedings of SPIE - The International Society for Optical Engineering, 1991) [Trabalho apresentado em evento]
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Ch3Oh laser line assignment revisited by FTS and a new line analysis routine
; Moraes, João Carlos Silos; ; ; ; (Proceedings of SPIE - The International Society for Optical Engineering, 1991) [Trabalho apresentado em evento]
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Formação de professores e pesquisa em ensino de física em perspectiva freiriana: Considerações sobre processo de problematização da prática educacional
; de Carvalho, Lizete Maria Orquiza; (Revista Lusofona de Educacao, 2013) [Artigo]
In this paper, it has been discussed the development of an educational proposal for Physics Teacher' Education and Physics teaching research based on the assumptions underlying Paulo Freire's problem-posing dialogical ... -
Development of poultry production sustainability through bio-digestors
; ; ; ; Sabbag, Omar Jorge (Revista em Agronegocio e Meio Ambiente, 2022) [Artigo]
The economic viability of a bio-digestor in a broiler production unit is analyzed. Chicken coup bedding with rice bran and shavings is employed as the substrate for the generation of energy, aiming at the production of ... -
Effects of addition of hybrid nanocomposite based on polysaccharide hydrogel and nanoclay on the fresh and hardened properties of cementitious mortars
Calesco, M. A.F.; ; de Moura, M. R. ; Aouada, F. A. (Ceramica, 2022) [Artigo]
Mortars are heterogeneous composites that gain strength through a succession of chemical reactions between water and Portland cement. In this sense, hydrophilic polymers that can absorb water and release it later have been ... -
Time-resolved piezoelectric response in relaxor ferroelectric (Pb0.88La0.12)(Zr0.52Ti0.48)O3thin films
; ; ; ; ; ; ; Araújo, Eudes B.; (Journal of Applied Physics, 2022) [Artigo]
The domain switching dynamics in a relaxor ferroelectric lanthanum-modified lead zirconate titanate thin film with 12 mol. % La was investigated by time-resolved x-ray diffraction. While most frequently epitaxial thin films ... -
Design, synthesis, and in vitro antiplatelet aggregation activities of taiwanin C
Daron, Érika C. A. S. K.; Negri, Wellington T. ; ; ; ; Laurentiz, Rosangela S. de (Natural Product Research, 2022) [Artigo]
Total synthesis of taiwanin C was realised efficiently in a global yield of 52%. Taiwanin C in aggregation assays inhibited platelet aggregation in a concentration-dependent manner with an IC50 of 0.46 μM after exposure ... -
A Polyhedral Oligomeric Silsesquioxane (POSS) Doped with Cerium(III) / Fe(II) and its Application as an Electrochemical Sensor for L-dopamine
dos Santos Franco, Fernanda; Peixoto, Murilo Santos ; dos Santos Felipe, Alexsandro ; do Carmo, Devaney Ribeiro (Silicon, 2022) [Artigo]
A Polyhedral oligomeric silsesquioxane (POSS) doped with cerium (III) was synthesized and reacted with potassium hexacyanoferrate (SCeH). The vibrational, structural, morphological and electrochemical properties of this ... -
Evaluation of lignan-loaded poly(ε-caprolactone) nanoparticles: synthesis, characterization, in vivo and in silico schistosomicidal activity
; ; ; ; ; ; ; ; ; Laurentiz, Rosangela S. et al. (Natural Product Research, 2021) [Artigo]
Lignan dinitrohinokinin displays important biological activities, which led to the preparation of its poly-ε-caprolactone nanoparticles. Kinetics analysis revealed initially slow drug release followed by a prolonged, ... -
Formation of copper oxide II in polymer solution-blow-spun fibers and the successful non-woven ceramic production
Bitencourt da Silva, Alex Nascimento; de Moura, Marcia Regina ; Zadorosny, Rafael (Materials Chemistry and Physics, 2022) [Artigo]
Copper oxide II is a p-type semiconductor that can be used in several applications. Focusing on producing such material using an easy and low-cost technique, we followed an acetate one-pot-like route for producing a polymer ... -
In vitro and in silico cytotoxicity of hinokinin-loaded PLGA microparticle systems against tumoral SiHa cells
de Lima, Regiane G.; Lisoni, Flavia C. R. ; Picão, Thais B. ; ; ; ; ; ; ; et al. (Natural Product Research, 2021) [Artigo]
This work aimed to synthesize poly (D, L-lactic-co-glycolic acid) (PLGA) microparticles containing hinokinin (HNK) and to evaluate their cytotoxic activity against tumoral SiHa cells and non-tumoral HaCaT cells. Hinokinin ... -
Effect of Piper cubeba total extract and isolated lignans on head and neck cancer cell lines and normal fibroblasts
Gusson-Zanetoni, Juliana Prado; da Silva, Julliene Stephanie Guaraldi Monteiro ; Picão, Thais Bravo ; Cardin, Laila Toniol ; Prates, Janesly ; Sousa, Stefanie Oliveira ; ; Oliani, Sonia Maria ; ; et al. (Journal of Pharmacological Sciences, 2022) [Artigo]
The objective of the present study was to evaluate the action of the crude hydroalcoholic extract of Piper cubeba fruits and isolated lignans (cubebin, dihydrocubebin, ethylcubebin, hinokinin and methylcubebin) on head and ... -
CeO2 nanostructured electrochemical sensor for the simultaneous recognition of diethylstilbestrol and 17β-estradiol hormones
; ; ; ; ; ; ; Grillo, Renato; ; (Science of the Total Environment, 2022) [Artigo]
A new highly sensitive, selective, and inexpensive electrochemical method has been developed for simultaneously detecting diethylstilbestrol (DES) and 17β-estradiol (E2) in environmental samples (groundwater and lake water) ... -
Structural, microstructural and dielectric characterizations of (Bi 0. 5 Na 0. 5)TiO3based lead-free ferroelectric ceramics
Moya, B. R.; ; ; (Journal of Advanced Dielectrics, 2021) [Artigo]
(1-x)Bi0.5Na0.5TiO3-xBaTiO3lead-free ceramics have been obtained from the conventional solid-state reaction sintering method. The structural properties were investigated from X-ray diffraction and Raman spectroscopy ... -
Structural and mechanical characterization of polyurethane-CaCO3 composites synthesized at high calcium carbonate loading: An experimental and theoretical study
; ; dos Santos, Vanessa S; ; ; Elizario, Sayonara ; de Moura, Márcia R ; ; (Journal of Composite Materials, 2021) [Artigo]
Due to its exceptional biocompatibility, Polyurethane (PU) reinforced with calcium carbonate (CaCO3) is a composite material with significant biomedical applications. However, much of the currently known mechanical and ... -
TeraHertz laser generation by optically pumped polar molecules
; ; Morais, J. C.S.; ; (Optics InfoBase Conference Papers, 2007) [Trabalho apresentado em evento]
In this work we report 12 new optically pumped far-infrared (FIR) laser lines from CH3OH and 19 from 13CH3OH. A 13CO2 laser of wide tunability (110 MHz) was used as pump source, and a Fabry-Perot open cavity was used as a ... -
caracterização mecânica e estrutural de um dispositivo pdlc baseado em hidrogéis de paam e cristal líquido liotrópico LP/DeOH/H2O
Aouada, Fauze A.; De Moura, Marcia R. ; ; ; (Quimica Nova, 2014) [Artigo]
MECHANICAL AND STRUCTURAL CHARACTERIZATION OF A PDLC DEVICE BASED ON PAAm HYDROGELS AND KL-DeOH-H2O LYOTROPIC LIQUID CRYSTAL. In this work, a novel device based on polyacrylamide (PAAm) hydrogels and KL-DeOH-H2O lyotropic ...