JBCS

Spheroidal nanoparticles of ZnO are obtained from zinc nitrate and ammonium carbonate, via controlled precipitation. Effects of the reaction parameters and the antimicrobial effect of the material are studied.

The Ru³⁺ complex proposed presented antitumor activity higher to cisplatin, and a significant reduction in acute toxicity once compared to antitumor drug (category = 1), being considered the Na[Ru(H₂O)₂(Mal-κ²O)₂] complex in the category = 4.

The THz spectroscopy was used to detect the 4- and 5-hydroxysalicylic acid isomers. The vibrational modes of two isomers were studied by PED analysis. Chemical bonds and weak interactions of two isomers were analyzed using IRI methods.

Copaiba oil was adsolubilized into ZnAl layered double hydroxides synthesized with dodecyl sulfate anions. The slow-release experiments have shown de potentiality to use the layered double hydroxides filled with copaiba oil like a carrier in ointments.

The present study describes the one-pot metathesis reaction between piperine and eugenol, in the presence of the 1st generation Grubbs catalyst. The results (isomerization, dimerization) are discussed in terms of the influence of the double bond.

Biodiesel samples in mixtures with natural extracts of senna leaves, hibiscus flowers and blackberry fruits were analyzed and studied using neural networks of the multilayer perceptron type.

Melaleuca (tea tree) essential oil, with high proportion of 1,8-cineol/terpinen-4-ol, was loaded to NaCMC gels. The samples presented hydrolitic degradation; relaxation mechanism dictated swelling capacity and oil delivery; and the samples were active against S.aureus.

Brazil is an important player in the essential oils market, with a positive impact the balance of trade for this class of goods.

Bibliographic analysis of the traditional use, chemical and pharmacological profile of Pavonia Cav. species (Malvaceae sensu lato) searching for new drug sources.

A new spectrophotometric method based on cloud-point extraction for the determination of gadolinium in water and contrast agents was successfully optimized.

The Periodic Table of the Elements of Green and Sustainable Chemistry is an interdisciplinary encyclopedia contributing to Sustainable Development. This paper presents a translation of this alternative table into the Portuguese language and an alignment discussion with a sustainable future.

Educational robotics and educational cooperation combined with Chemistry Teaching in a Civil Engineering course, culminated in learning of university students made a robot to identify electrochemical corrosion in concrete metallic structures.

The state of the art of new techniques for flavonoids separation and purification: employing ionic liquids, eutectic solvent, and chelating agents.