RSS 1.0Artigos - Física e Química - FEIS
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Fabrication and characterization of a novel herbicide delivery system with magnetic collectability and Its phytotoxic effect on photosystem II of aquatic macrophyte
; ; ; ; ; ; ; Fraceto, Leonardo Fernandes
; Grillo, Renato (Journal of Agricultural and Food Chemistry, 2020) [Artigo]
The use of nano- and microparticles as a release system for agrochemicals has been increasing in agricultural sector. However, the production of eco-friendly and smart carriers that can be easily handled in the environment ... -
Foliage adhesion and interactions with particulate delivery systems for plant nanobionics and intelligent agriculture
Grillo, Renato; ; ; ; ; (Nano Today, 2021) [Artigo]
The constantly increasing global food demand galvanizes innovative agricultural actions aimed to transcend current production levels. The predicted near-future food security scenario is alarming, requiring actions beyond ... -
Ecotoxicological and regulatory aspects of environmental sustainability of nanopesticides
Grillo, Renato; Fraceto, Leonardo Fernandes ; ; ; ; (Journal of Hazardous Materials, 2021) [Artigo]
Recent years have seen the development of various colloidal formulations of pesticides and other agrochemicals aimed at use in sustainable agriculture. These formulations include inorganic, organic or hybrid particulates, ... -
Ab initio molecular dynamics description of proton transfer at water-tricalcium silicate interface
Claverie, Jérôme; ; Cordeiro, João Manuel Marques ; (Cement and Concrete Research, 2020) [Artigo]
For the first time, an ab initio molecular dynamics simulation was performed to describe the C3S/water interface. The simulation shows that oxides with favorable environment are protonated at first, creating very stable ... -
Dynamical regimes of kinematic vortices in the resistive state of a mesoscopic superconducting bridge
Presotto, Alice; Sardella, Edson ; Malvezzi, André Luiz ; Zadorosny, Rafael (Journal of Physics Condensed Matter, 2020) [Artigo]
In this work, we studied the dynamics of the kinematic vortices (kV) in a mesoscopic superconductor under the influence of external applied magnetic fields (H) and transport currents (J tr). A J tr(H) phase diagram is ... -
Bidirectional connectivity via fish ladders in a large Neotropical river: Response to a comment
; ; ; ; Dias, João Henrique Pinheiro; (River Research and Applications, 2020) [Artigo]
In a recent article, we described fitting electronic tags to the fish Prochilodus lineatus to document how a fishway connected aquatic habitats downstream and upstream of a major dam. Moreover, given that tagged fish ... -
Physiological mechanisms and phytoremediation potential of the macrophyte Salvinia biloba towards a commercial formulation and an analytical standard of glyphosate
; ; Grillo, Renato; ; ; (Chemosphere, 2020) [Artigo]
Glyphosate (Gly) is the most widely used herbicide in the world and has broad-spectrum and non-selective activity. Its indiscriminate use hence risks contamination of water bodies and can affect living organisms, especially ... -
Evaluation of Nickel Neurotoxicity and High Sorption through a Hybrid Yeast / Silsesquioxane Material
Trama-Freitas, Bianca; Franco, Fernanda ; ; ; ; ; do Carmo, Devaney R. (Silicon, 2020) [Artigo]
The presence of heavy metals in water is one of the major concerns in the public health area. So, the characterization of inorganic compounds toxicity and their detection, speciation and removal are some of the biggest ... -
A Comparative Voltammetric Study of a Chemically Modified Octa(3-Aminopropyl)Octasilsesquioxane and DAB-AM-16 Dendrimer Supported on the Silica Gel Surface for Dipyrone Detection
do Carmo, Devaney Ribeiro; Barbosa, Priscila Fernanda Pereira ; Junior, Suelino Gabriel (Silicon, 2020) [Artigo]
Octa(3-aminopropyl)octasilsesquioxane and DAB-AM-16 dendrimer, due to their specific chemical and physical properties, give wide application in various fields of science. Because they have a large number of NH2 reactive ... -
On the influence of pyrochlore phase on ferroelectric and dielectric properties of PZT thin films
; Araujo, E. B.; (Ferroelectrics, 2020) [Artigo]
The intrinsic contribution of dielectric permittivity was obtained in thin films of PZT pyrolyzed at different temperatures. Pyrochlore phases were observed in films pyrolyzed at temperatures above 350 °C, while only the ... -
An intervalence complex on chitosan surface and its application for isoniazid detection in synthetic samples
Pereira Barbosa, Priscila Fernanda; ; ; Ribeiro do Carmo, Devaney (Solid State Sciences, 2020) [Artigo]
In the current article it is described the preparation of a natural polymeric material formed by chitosan and a complex (copper hexacyanoferrate II) for application as voltammetric sensor for isoniazid (ISO) using a carbon ... -
A Cerium Hexacyanoferrate (III) Nanoparticle-modified Carbon Paste Electrode: Voltammetric Characterization and Behavior in the Presence of Dopamine
de Oliveira, Denys Ribeiro; ; do Carmo, Devaney Ribeiro (Electroanalysis, 2020) [Artigo]
This study describes a fast and simple methodology for the preparation of Cerium (III) Hexacyanoferrate (II) (CeHCF) nanoparticles (NPs). The NPs were characterized by fourier transform infrared (FTIR), x-ray diffraction ... -
Voltammetric Detection of Nitrite Throught a Chemically Modified (5-Amino-1,3,4-Thiadiazolyl-2-Thiol) Propyl Silica Gel
Nakamura, Ana Paula Rizzato; Fernandes, Daniela Silvestrini ; ; Filho, Newton Luis Dias ; do Carmo, Devaney Ribeiro (Silicon, 2020) [Artigo]
This study describes an organofunctionalization of 3-chloropropyl silica gel (SG) with 5-amino-1,3,4-thiadiazolyl-2-thiol, and was characterized by spectroscopic techniques as infrared spectroscopy and nuclear magnetic ... -
One-pot-like facile synthesis of YBa2Cu3O7-δ superconducting ceramic: Using PVP to obtain a precursor solution in two steps
Rotta, Maycon; ; Pessoa, Alexsander Lourenço ; Carvalho, Claudio Luiz ; ; Lisboa-Filho, Paulo Noronha ; ; Zadorosny, Rafael (Materials Chemistry and Physics, 2020) [Artigo]
There are a variety of chemical routes used to produce advanced ceramic materials. The sol-gel-like methods are widely applied since the final samples present high stoichiometric and grain size homogeneity. However, with ... -
Crossover from type i to type II regime of mesoscopic superconductors of the first group
Cadorim, Leonardo Rodrigues; Calsolari, Thiago De Oliveira ; Zadorosny, Rafael ; Sardella, Edson (Journal of Physics Condensed Matter, 2020) [Artigo]
In the present work, we have studied the crossover between type I and type II superconductivity on mesoscopic superconducting thin films by numerically solving the 3D Ginzburg-Landau equations. We determined the dependence ... -
Wear and corrosion resistance of Nb-V carbide layers produced in vermicular cast iron using TRD treatments
; ; ; Picone, Carlos Alberto; (Surface & Coatings Technology, 2020) [Artigo]
Nb, V and Nb-V carbide layers were produced by means of the diffusion thermo-reactive treatment (TRD) in a vermicular cast iron, in baths composed of sodium borate, aluminum, ferro-niobium and/or ferro-vanadium, at 1000 ... -
Alternating current oxidation of Ti-6Al-4V alloy in oxalic acid for corrosion resistant surface finishing
; ; Picone, Carlos Alberto; ; ; ; ; (Sn Applied Sciences, 2020) [Artigo]
In this work, alternating current (AC) voltage (V-AC) is applied to Ti-6Al-4V alloy in aqueous oxalic acid dihydrate solution to grow passive oxide films. The oxide layers are formed with V-AC values in the range of 10-80 ... -
Surface and electronic properties of rutile TiO2 thin films coated with PbO2
; Fabris, G. S. L.; Sambrano, J. R. ; (Computational Materials Science, 2020) [Artigo]
Binary films of semiconductors have lots of potential applications in material science. Initially, these films were based on In2O3 but, because of its high coast, alternative materials to replace it have been intensely ... -
Atomic frustrated impurity states in Weyl metals
Mizobata, W. N.; ; Penha, M. ; Sanches, J. E. ; Ricco, L. S. ; Souza, M. de ; ; Seridonio, A. C. (Physical Review B, 2020) [Artigo]
We theoretically analyze the effect of the inversion symmetry breaking on the structure of the impurity molecular states in Weyl metals. We show that for the case of a highly noncentrosymmetric Weyl metallic host, the ... -
Escalating the technical bounds for the production of cellulose-aided peach leathers: From the benchtop to the pilot plant
; ; ; ; Moura, Marcia R. de; (Carbohydrate Polymers, 2020) [Artigo]
This contribution falls within the context of sustainable functional materials. We report on the production of fruit leathers based chiefly on peach pulp, but combined with hydroxypropyl methylcellulose (HPMC) as binding ...