JBCS

Determination of Ba, Cu, Ni, V, and Zn in medicinal herbs through direct solid sample analysis by energy dispersive X-ray fluorescence spectrometry (EDXRF).

This work proposes a procedure to determine the content of Sb^III in pentavalent antimony drugs using 4 to 20-fold lower citric acid solutions than recommended in the available literature.

The optimized experimental conditions increased the conversion of methyl esters and the selectivity toward the corresponding dihydrobenzofuran neolignans 1 and 2.

Trunks and roots of Brazilian orange trees present quantitative values of lignin close to 20% (m/m). Chemical analyses confirmed typical lignin from hardwood highlighting the syringyl and guaiacyl units.

Extraction of oil from safflower seeds and its use as a source of unsaturation to obtain synthetic antioxidant additive for biodiesel.

In this work we develop a procedure to determine inorganic compounds in street cocaine samples, seized in three different regions of Espírito Santo. Inductively coupled plasma optical emission spectrometry (ICP OES), inductively coupled plasma mass spectrometry (ICP-MS) and chemometric techniques were applied to analyze and verify similar and discrepant characteristics between samples.

A perspective on the application of stable isotope method (δ¹³C) for the analysis of sugarcane/petroleum polyethylene blends.

Determination of emerging contaminants in aqueous matrices employing o-DGT (diffusive gradient in thin films for organics) devices.

Molecular dynamics (MD) simulation of the proposed compound LMM4 in the cruzain enzyme.

Thermo and photo responsive blue glow sticks of cinnamic acids and arylacrylonitriles. Fan-focal conic and oily streak textures for smectic A (SmA) mesophase and blue luminescence are shown for stick-shape molecules.

An automated framework integrating several program and techniques was developed to virtual screen new molecules using machine learning models.

Analysis of commercial and non-commercial samples of arabica coffee via nuclear magnetic resonance (NMR) and principal component analysis (PCA) in relation to roasting time and temperature.

The suspended particulate material of the Mundaú-Manguaba estuarine-lagoon system has an affinity for potentially toxic metals and influences their availability in the environment.

Esterification of carboxylic acids catalyzed by acid-activated clays. R = alkyl group.

Eco-friendly Sn_1/2H₂PW₁₂O₄₀ showed superior oxidation yield of benzaldehyde for synergy effect of Brønsted-Lewis acid, strong Brønsted acidity, and pseudo-liquid characteristic of catalyst.

Cu₂Al layered double hydroxide (LDH) intercalated with SO₄²⁻, SO₄²⁻/(Li⁺, Na⁺, K⁺ or NH4⁺), NO₃⁻ and CO₃²⁻ were synthesized and the exchange reactions investigated.

The performance for biodiesel production of a SnO₂/ZnO nanowire catalyst was evaluated.

A magnetic sorbent based on polyaniline coated zerovalent iron-silica (Fe@SiO₂@PANI) was simply synthesized using a facile manner under low energy consumption following its application for magnetic solid phase extraction of phenolic pollutants prior to determination by high performance liquid chromatography-photodiode array detection (HPLC-PDA).

Adsorption capacity is increased by the mesoporosity in semi-crystalline Y zeolite synthesized from rice hull ash.

When reacting the vegetable oil with ozone gas form ozonized vegetable oil with antibacterial effect.

Diatraea saccharalis male active behavior mediated by the release of the female sex pheromone.

Determination of trace elements including arsenic in seawater using inductively coupled plasma spectrometry in standard mode.