JBCS

Nanostructures such as liposomes, solid lipid nanoparticles, nanoemulsions, polymeric nanoparticles, metallic nanoparticles, carbon dots and carbon nanotubes appeared as important nanocarriers acting on Aedes aegypti control. Some of them have effective antiviral properties that open a new strategy for mosquito control.

Synthesis of [¹⁸F]fluoromisonidazole ([¹⁸F]FMISO) using novel precursors prepared from 2,2-dimethyl-1,3-dioxolane-4-methanol was achieved.

Synthesis, analytical and spectroscopic characterization and in-vitro antioxidant activity of chiral N-boc organotellurium compounds containing carbamate and peptide groups derived from L-N-boc amino acids and organotellurated amine is reported here.

Accreditation is a way to demonstrate the technical competence through reliable results achieved from validated scope. A multi-residue method was developed to determine pesticides residues in tomato in order to demonstrate the laboratory ability and conformity with the NBR ISO/IEC 17025:2005 norm.

Active search method aimed at finding objects with optimal or near-optimal y-property values on the basis of x-variables obtained by indirect, less costly methods.

Optimization of a new method for specific determination of total phenolic compounds through direct QUENCHER procedure paired with Fast Blue BB reagent.

Hydroquinone and catechol are very effective for Fe^III reduction, however higher mineralization is obtained under irradiation of either complexed or free iron.

Computational study of the reaction mechanism of two successive [3 + 2] 1,3-dipolar cycloaddition reactions involving benzonitrile oxide give rise to a bicycle.

In this work, sixteen 1,4-diaryl-1,2,3-triazole analogues of neolignans veraguensin, grandisin and machilin G were synthesized, and biological activity was evaluated for antitripanosomastid against Leishmania amazonensis, Leishmania infantum and Trypanosoma cruzi.

Evaluation of formic acid as an extraction medium for characterizing trace elements in whole nut, oil and defatted fractions of Brazil nut and babassu coconut by inductively coupled plasma mass spectrometry (ICP-MS).

Diphenyl amines were synthesized using an efficient procedure and evaluated for their in vitro anti-bacterial activity against eight standard Gram-positive and Gram-negative strains. Most of the synthesized compounds displayed good anti-Staphylococcal activity. Potential compounds were further evaluated against resistant strains of Staphylococcus aureus. Compounds 2-(2,4-dinitrophenylamino)-phenol and 2-(2-nitrophenylamino)-phenol demonstrated promising results in initial studies.

Derivatives of betulinic acid, steviol and isosteviol were prepared and tested in vitro against Plasmodium falciparum and Trypanosoma cruzi. Dinitrophenylhydrazone derivatives of betulinic acid were the most active antiplasmodium compounds whereas the oxime of isosteviol was the most active against T. cruzi.

Ultraviolet (UV) characteristic profiles and Fourier transform infrared (FTIR) spectroscopic fingerprints of green bean extracts of Coffea arabica L., cultivated in two planting patterns and at two different densities, were analyzed with principal component and hierarchical cluster analyses. The results show that chlorogenic acids and caffeine differentiated the UV and FTIR fingerprints of these treatments.

A simple and sensitive electroanalytical method for the simultaneous determination of amlodipine besylate and atenolol is reported for the first time. Square-wave voltammetry along with a cathodically pretreated boron-doped diamond electrode were used in this new procedure.

Sample preparation based on diluted acid and digester block with perfluoroalkoxy (PFA) tubes for arsenic determination in mineral fertilizers by continuous flow hydride generation atomic absorption spectrometry (CF-HG-AAS).

Schematic representation of the preparation process of Mo-ion imprinted polymer and conditioning that consists of passing 20 mL deionized water at a flow rate of 1.5 mL min^-1. Sample adsorption in column: 35 mL of the sample was passed through the column at flow rate of 1.5 mL min^-1. Elution: washing with 7 mL distilled water at a flow rate of 1.5 mL min^-1.

Through the combination of temperature and time, low heating, and response surface methodology, a new cyanide elimination method for cassava leaves was developed with focus on reducing elimination time while avoiding substantial losses of omega-3 fatty acids and β-carotene.

Self-immobilization of a pre-synthesized organic polymer on metalized silica particles and their potential use as efficient and chemically stable stationary phases for reversed-phase liquid chromatography (RP-LC).

Energy dispersive X-ray fluorescence analysis of postage stamps printed in Brazil between 1850-1922 for the study of elementary profile and detection of counterfeit samples.

Ka-MeOH-SS was synthesized via intercalation and displacement of kaolinite with DMSO, methanol and sodium stearate.