JBCS

Photophysical properties of the complexes were evaluated from luminescence data. It is proposed two intramolecular energy transfer mechanisms, which involve the participation of excited electronic states of the heterocyclic ligands as intermediate ones.

Dispersive liquid-liquid microextraction (DLLME) and spectrofluorimeter coupled with chemometrics methods were applied for trace determination of ofloxacin in urine sample. Three-dimensional multivariate calibration was used for analysis of DLLME data.

The 10-Fe/MWCNT/TiO₂-Ag-9 catalyst presents higher activity under longer wavelength light than pure TiO₂. With good stability after 10 cycles, the catalyst has promising potential for practical applications.

The eco-friendly synthesis of a series of xanthenones (up to 93% of yield) using natural organic acids as catalysts is reported.

Response surface for the concentration of lactulose according to the type of isomerization and reaction time.

Optimized TNA structures in ethanol: their HOMO/LUMO molecular orbitals and different colors according to the mediums.

This study is related to the use of cork as a material of natural origin, renewable and biodegradable for the determination of two classes of UV filters in water samples. The results showed good extraction efficiency, as well as satisfactory analytical performance.

Infrared spectroscopy coupled with principal component analysis allowed discriminating the fractions and identifying the functional groups of compounds present in the sample.

A simple and fast procedure for Se determination in bovine semen by ICP-MS after sample solubilization with diluted formic acid.

Higher water retention ability and a single glass transition temperature (Tg) were found in ternary co-dried blending films when propylene glycol alginate (PGA) was added by a co-drying process. A single Tg indicates the compatibility of soy protein isolate (SPI), PGA and lauric acid (La). Differential scanning calorimetry scans showed higher relative humidity (RH) and reduced Tg due to incorporation of La.

Chemical profile by HPLC-DAD of leaves extracts from V. divergens seedlings inoculated with endophytic fungi isolated from V. divergens roots on dry and wet seasons in the Pantanal.

The spatial and temporal variations in the secondary metabolites from Lychnophora ericoides were investigated. Chlorogenic acids presented highest concentrations in the dry season, while flavonoids were higher in the rainy season. Lower concentrations were found for all metabolites in flowery branches and old leaves.

Colored hydrophobic layered double hydroxides (LDH) with the formula M⁺²_0.25Al_0.75(A)_0.25.nH₂O, where M⁺² = Ni or Co and A = dodecylsulfate, laurate, palmitate and stearate were synthesized and used as fillers in low density polyethylene. The influence of the metal in the LDH layers and the intercalated specie in the nanocomposites properties were discussed.

The sea spray presence in the atmosphere of the Semiarid was investigated. The trajectories of air masses for each sampling period showed that the air mass that arrived in the region passed over the ocean. The sea spray amount which reaches the region is insufficient to salinize waters.

Transparent thin films present optoelectronic or optical applications. Spray pyrolysis can yield spherical indium and tin oxide (ITO) micro- and nanoparticles. The sol-gel methodology affords conductive films.

Target analytes were extracted into extraction solvent from aqueous phase. Extraction, concentration, and purification were done in one step. After centrifugation, extraction solvent was sedimented at the bottom of the tube.

The article evaluates farming of Chlorella sp. in photobioreactor and sewage sludge as potential source of fatty material for biodiesel production.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

Under the optimized high performance liquid chromatography (HPLC) conditions, the NP and 11 kinds of NPnEO were separated and determined successfully within 35 min.

Pressure differential in the filter element resulting from the retention of particulate matter (PM) as a function of the volume of sampled gas to diesel CN 50 and your formulation with 10MR, 20MR, 10ER and 20ER. Lower differential pressure according to the gas volume indicates lower retention of PM.

The arsenic levels found in different tissues of fish (tilapia) is an indicator of environment pollution and the different organs of the fish can influence the arsenic distribution and its bioaccumulation.

This study presents degradation studies, development and validation of an analytical method applied for both determination of perillyl alcohol encapsulation efficiency and evaluating the presence of related degradation products in polymeric nanoparticles formulation.

Triterpenes showed promising activities and synergistic effects, which resulted in mitochondrial dysfunction and cell death by apoptosis, against amastigote forms of Trypanosoma cruzi.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

When carbon steels were exposed in CO₂ saturated solutions at different temperatures, corrosion product film with different structure and composition formed on the surface of carbon steels and dominated the corrosion rate of carbon steels significantly.

A new method using smartphone image analysis for quantification of ascorbic acid (AA) in vitamin C tablets is described. The method is based on AA interfering effect in enzymatic colorimetric detection of glucose.

A low-cost video-based reflectometer device was developed to quantify Cu²⁺ using paper-based colorimetric sensors.