JBCS

One of the main causes of global warming is the use of fossil and biomass fuels. Products and by-products generated by burning result in increased greenhouse gases. These fuels are also used for cooking, so it also has its share of contribution to global warming.

This work showed the influence of the dopants concentration on the spectroscopic properties of the europium III ion and the crystallite size, when incorporated in the yttrium vanadate matrix obtained by non-hydrolytic sol-gel route.

The stabilizers currently used in compositions of the nitrocellulose based propellants are toxic, carcinogenic and mutagenic. Besides they also represent a serious risk to the environment and to workers who deals with this kind of chemicals.

The topological index of a molecular structure correlate certain physicochemical properties such as boiling point, enthalpy and entropy and stability of that molecular structures. In this article we have computed topological indices for Copper (I) oxide and Copper (II) oxide.

New lignan, luclaricin, isolated from the aereal parts of Phyllanthus acuminatus.

Aporphine, oxoaporphine and tetrahydroprotoberberine alkaloids were isolated from the leaves of Guatteria pogonopus. The NMR data for most of the described alkaloids were reviewed herein. In addition, the cytotoxicity of these alkaloids was evaluated.

The silica prepared in the absence and presence of the protic ionic liquid was used in a packed bed reactor for the characterization of the reactor by the residence time distribution and the mass transfer effect.

The use of chelating agents in the impregnation step induces the formation of nanoparticles of CeO₂ between 5 and 6.8 nm as it is shown by XRD.

A homemade and commercial immobilized lipases were used to geranyl butanoate production by esterification of geraniol and butanoic acid with production optimization and kinetic evaluation.

Bambus[n]uril cavitands have a low electron density (blue) at the center of the cycle and binds anions with high affinity and selectivity.

Light dosimetry effectively absorbed (Da_bs) by methylene blue in photosensitization processes employing polychromatic light sources.

The immobilization of cyclodextrin onto the surface of gold nanoparticles at the time of their formation. Cyclodextrin acts as a reductant and a stabilizer.

Presentation of the origin of the names and the historical background of development of glassware used in Chemistry experimental classes can make learning more meaningful.

This article discusses the epistemological obstacles related to the Pedagogical Knowledge of Chemistry Content that influence the formative process of future professors of chemistry.

The Euler's relation, as a mathematical consequence of the exact differential equations, allows an easy and didactic differentiation of the thermodynamic variables in state functions and process variables.