JBCS

An analytical method capable of identifying caseinomacropeptide by Fourier Transform Infrared Spectra was developed using chemometrics methods.

Potentiometric sensor based on silver sulphide nanoparticles supported on hierarchical porous carbon (Ag₂S/HPC₄₀₀) as ink on a glassy carbon electrode for the detection of free cyanide (CN^-).

We evaluated the effect of the addition of different hydrochar ratios on latosol and argisols on nutrient release and compared them with anthropogenic soils known for their high fertility.

It is possible the use of copolymers (P3OT/P3MT) in hybrid solar cells, searching for new alternatives of materials photosensitizing. Photovoltaic comparative parameters of cells produced by TiO₂ and ZnO with P3OT/P3MT were investigated in this paper.

Assessing biodegradation extent of Brazilian petroleum samples by the new parameter H30/DC coupled to H30/AC based on the homologue series of n-alkylcyclohexanes (C₁₃ to C₂₆), using the mass chromatogram m/z 83 obtained by gas chromatography coupled to mass spectrometry.

As an innovation, a maleated natural gum (pine rosin) is used here as coupling agent for fiber composites or compatibilizer for biodegradable polymer blends, improving its mechanical properties while preserving biodegradability.

Development of solar filters using fast and low cost synthesis method.

Essential oil analyses of Indigofera suffruticosa showed 89.9% of phenylpropanoids, with eugenol as major constituent. Oil and selected constituents showed toxicity and oviposition deterrence action against Tetranychus urticae.

As is presented in the Figure, when the temperature was 30-150 ℃, the hydrogen and oxygen or chlorine were absorbed in the surface of catalyst and then generated water or hydrochloric acid.

Events in a single nanoparticle of TiO₂ during the UV-Irradiation: excitation of the electron (e^-) from VB to CB generating holes (h⁺), the e^-/h⁺ recombination, their trapping and charge transfer. Chemical O₂ demand and sample pretreatment exemplify analytical applications.

Evaluating teaching and learning processes and low pass rates in General Chemistry and interventional strategies that increase success rate.

This work presents the determination of Al³⁺, Fe³⁺ and Cu²⁺ in eye shadows makeup a potential higher level didactic strategy for discussing some analytical chemistry concepts through contextualization assumptions in the teaching of chemistry.

This paper is about the visit of Walther Hermann Nernst to Brazil, in 1914. The present study is based on the view the newspapers, at the time gave, to this visit and also based on the letters exchanged between Nernst's daughter and some of his former students.