JBCS

Titanium cooperated with NH₂-UiO-66 has been prepared via post synthesis modifications approach and perform enhanced CO₂ uptake application due to their unprecedented capacity to store small molecules.

The point to carry out the distillation cut is between fraction 05 and 06, because in fraction 06 the content of C12 decreases and that of C18 increases. Thus, the distillate would be between 50 and 60% of the total biodiesel used in distillation.

The presence of the phenolic mediator, 3,4-dihydroxyphenylacetic acid, increased the reaction rate to the phenol red decolorization by a Fenton system.

Leaves of Pentacalia desiderabilis (Asteraceae) were extracted using BMImBr and H₂O in a MAE system. Partition with CH₂Cl₂ and fractionation of organic phase afforded four related quinoids (1 - 4). Compounds 1 - 3 displayed activity against Cladosporium sp.

Analysis of the correlation between electronic and spectral data of the conformers of new 1,3,4-thiadiazole compounds.

Influence of the axial velocity on the initial temperature developed during the propellant burning process.

A series of nitroguanidine and 1,1-diamino-2,2-dinitroethene based cyclic energetic materials were designed and their electronic structures, detonation properties and thermal stabilities were fully investigate by density functional theory (DFT).

Phytochemical study of the CHCl₃ fraction from EtOH extract of T. hispidula stem led to the isolation of six pure compounds and four mixtures, predominantly triterpenoids and steroids. The CHCl₃ and EtOAc fractions were the most active against Leishmania major promastigotes.

Comparison between two PAH extraction techniques, soxhlet and microwave irradiation, in biological tissues of marine tetrapods. Validation of analytical methods and procedures.

This review presents a critical view of the toxic effects of silver nanoparticles (Ag NPs) on in vitro and in vivo biological models.

This study compared eight simple methods for identification of macrolides residues in canned baby food and an effective extraction method was achieved, using QuEChERS procedure for sample preparation.

Using the topic of biodiesel as a platform, we have created a series of activities designed to provide undergraduate chemistry students the opportunity to develop oral communication skills.

The United Nations has proclaimed 2019 as the International Year of the Periodic Table of Chemical Elements. For that reason, it is considered pertinent to highlight the importance of the periodic system in the scientific and technological development of the chemistry.

In the first decades of the 20^th century, general chemistry textbooks presented the concept of valence in different ways, from classical approaches to the electronic model. Didactic models might include even an analogy with hooks holding atoms together.