JBCS

A silver(I) complex with the antimycobacterial drug isoniazid is described. It presented a minimal inhibitory concentration (MIC90) of 0.78 µg mL^-1 against the standard Mycobacterium tuberculosis strain H37Rv.

Two new and three known naphthoquinones, including three with antioxidant capacity, were isolated of Sinningia reitzii from Santa Catarina State, Brazil.

The aim of this study is to simulate atmospheric conditions during the formation of charcoal through the carbonization of Araucaria columnaris wood in varying oxygen concentrations.

Pt/TiO₂ nanoparticles were prepared by a simple two-step aqueous solution method, which consists of a low temperature hydrothermal step and a photoreduction deposition step with Ti(SO₄)₂ CO(NH₂)₂ and H₂PtCl₆ as raw materials.

This review aims to present the potential of 4CzIPN as a metal-free photocatalyst by highlighting its application in many methodologies recently reported.

Imidazole presents a remarkable catalytic acid, basic and nucleophilic activity, which are explored in several scaffolds: molecular, (bio)materials, polymers and enzymes.

A LC-MS/MS method validation using an efficient one-step liquid-liquid extraction, conferring a cost-effective sample analysis and easy execution, making this an applicable biomarker in the laboratory routine.

Automatic titrometric method in flow-batch with potentiometric detection developed in this work allow the implementation of practical disciplines, such as potentiometric titration and flow analysis system in undergraduate chemistry courses.

This article provides mathematical facts about the use of orbitals in General Chemistry; 1) There are four sets of distinct, but equivalent, orbitals; 2) There is no logical basis to explain molecular structure with orbitals.

What are the consequences of teaching the complexity of orbitals to an average student of General Chemistry?

Polarimetric analysis of chiral chemical substances with the use of polarizing and analyzing filters and the detection of the displacement of polarized light by a photodiode connected to a voltmeter.

The learning progression models of Chemistry, Chemical Engineering and Pharmacy students from two federal universities in Rio de Janeiro on Chemical Kinetics were built from Rasch analysis of their responses to a questionnaire based on teachers' conceptions about their learnings.

An expeditious, organic solvent-free synthesis of 1,3-diaryltriazenes from substituted anilines using vinegar as solvent / acid source is presented. Reagent reactivity and product stability discussions are suitable for undergraduated students.

The scaleup process can be divided into 3 steps in the lab from the basic research, product, process validation up to the more complex 4th step of building and operating the pilot plant.