JBCS

In this first molecular geochemical study of Tianguá formation, it´s outcropping rocks were analyzed by GC-MS and GC-MS/MS regarding their organic matter content, with thermal evolution and depositional environment origin determined by biomarker parameters.

A recyclable and sensitive fluorescent nanoprobe, RhoB@ZIF-8 composite, has been designed and synthesized. This probe can be successfully applied in sensing trace amount of MG in aquaculture water and fish tissue samples.

A magnetic polymer composite microsphere which can effectively reduce the non-specific adsorption of proteins has been synthesized and has a good application prospect in vitro diagnosis.

The exploratory analysis of the data generated allowed identifying the most significant variables in each city and correlate these variables with the primary sources of emission of the compounds.

Novel drugs and natural products derivatives can be accessed using the logic of C-H bond functionalization.

Mangosteen (Garcinia mangostana, Linn.) is a tropical fruit native from Asia. The major constituent of its fruits' pericarpis α-mangostin, a natural prenylated xanthone, having potential as a chemotherapeutic agent for the prevention and treatment of several infectious diseases.

Working under an inert atmosphere can be a challenge in many laboratories. This is due to the absence of an equipment to handle compounds that are sensitive to atmospheric gases. Here an accessible glove box project is presented to help researchers who need to work under such conditions.

Caffeine extraction was conducted by a 2^5-1 fractional factorial design which enabled the screening of five experimental variables. The coffee samples were added in capsules to be extracted by an espresso machine and taken to the UV-Vis spectrophotometer for determination of caffeine.

Left: Photographs of different homemade microscopes. Right: Enhancement of the image using focus stacking technique.

The incompatibility between the legislation of the Federal Council of Chemistry and the Ministry of Education makes it difficult to train the chemistry professional.