JBCS

The objective of the work is to modify nanostructured semiconductors of Ti/TiO₂ with copper oxide for application in the photoelectrocatalytic conversion of CO₂ and biogas in fuel products of energetic interest.

Cinnamic derivative compounds are catalyzed by Grubbs Ru-catalysts which present distinct results based on the different electronic and steric contributions of the catalysts.

The spectra of calibration samples were decomposed into three vectors: NAS, Interference and Residual. From these vectors the statistical limits were calculated and the multivariate control charts were constructed. The scalar values NAS, D and Q of each sample were plotted on the respective charts.

In this study, one titrimetric and two spectrophotometric methods are developed for the determination of amoxicillin (AMX) in bulk drug and dosage forms using iodate-iodide mixture reagent.

Schematic diagram for the reduction of hydrogen peroxide to water.

Carrot root can act as catalyst to reduce furfural to furfuryl alcohol. This low-cost reaction is conducted under eco-friendly conditions.

In method 1: the extraction solvent mixed with a dispersing solvent it injected into the aqueous sample. In method 2: The extractive solvent it injected and then the sample is heated. At the end, the extractive solvent is solubilized in methanol and the chlorpyrifos determined by HPLC-UV.

Vegetable cultivars of human consumption in Brazil have been analyzed for calystegines presence. They were found in the whole sample set.

Development of chitosan nanogel bound to caffeic acid, to be used in the encapsulation of the essential oil of Lippia origanoides, in order to enable its use as an antioxidant.

Illustration of two routes of synthesis to obtain five new hydrazones. All the synthesized molecules were tested for antileishmanial and cytotoxic activity.

Analyzing and removing the base drift phenomenon of Hadamard transform technique.

Polar extracts of Copaifera multijuga plant parts (leaves, branches and barks) were analysed by direct insertion in ESI-QqQ-MS and MS² fragmentation. Several polyphenols were suggested and the metabolic profiles analysed by PCA.

Whole powder milks were analyzed by scanning electron microscopy and particle size analysis. By statistical analysis a more modern rehydration index was developed as a complement to the technique that is usually used to determine powders rehydration.

Electronic sheets for fast data handling on both qualitative and quantitative analyzes of essential oils.

Cannabinoids were extracted by solvents and ultrasound. The samples were refrigerated and centrifuged to separate the lipids. Cannabinoids were separated and quantified by HPLC method.

Organizational representation of study periods and discussion groups. Students: white circles; teacher: black circle and monitor: gray circle.

An experimental propose using flowers extracts: The picture shows the flowers used to extract the dyes in presence of H⁺ and OH^- ions (indicating the tests done in aqueous solutions).

Predicting spin crossover through Density Functional Theory and using in Inorganic Chemistry classes.

This article analyses the students' answers and representations about intermolecular interactions involved between oxygen gas and water.

A one-pot diastereoselective synthesis of thiazolidine-ring fused systems derived from enantiomerically pure amino acids is described as an experiment to be carried out by upper-division undergraduate students in a laboratory classroom.

Conductometric monitoring of the basic hydrolysis of an ester using a digital data acquisition kit. The progress curve with the trend line calculated based on the iteratively determined asymptote.

The equation of propagation of uncertainty is a simple and powerful equation that chemists should apply wisely and more often.