JBCS

An efficient and non-expensive method for conversion of diverse potassium organotrifluoroborates to their corresponding boronic acids and boronic esters promoted by montmorillonite K10 using water as the reaction solvent is described.

The interaction between human serum albumin (HSA) and semi-synthetic clerodanes showing potential anti-cancer activity was evaluated by experimental and theoretical methods. The clerodanes derived from trans-dehydrocrotonin (t-DCTN), methyl-hydrazone (MHDCTN) and phenyl-hydrazone (PHDCTN), showed better binding ability than the natural product t-DCTN.

Selective, simple and fast determination of colchicine by multiple pulse amperometry coupled to flow injection analysis (FIA-MPA) system in pharmaceutical formulations and urine samples using a boron-doped diamond electrode.

Superduplex stainless steels composed in both equal fraction ferritic-austenite phases are applied as components for use in petrochemical industries in off-shore platforms and its corrosion resistance (due to the passive film on the surface) is dependent on the temperature and environment in which they are exposed.

Well-defined cross-linked polymeric structures behaving as highly hydrated unimolecular objects (polymer nanogels) are suitable capping agents for palladium nanoparticle catalyst systems. This structurally complex catalyst composite can be prepared in two-steps.

The nature of the catalytic site is not clear, but one can consider that in the Na₂Mg₂Si₂O₇ structure is forming a species Si−O^-Na⁺. One possible mechanism is the interaction of CH₃OH with the basic site Si−O^-Na⁺.

In this study, the evaluation of multivariate curve resolution with alternating least squares (MCR-ALS) parameters was important for the analysis results of pharmaceutical pellets composition.

The characterization of humic acid (HA) obtained by activity of bacterial strains, that transform a low rank coal (LRC) lignite type and release humified organic matter (HOM), was compared with HA obtained by the traditional alkaline extraction method using 0.5 M NaOH (HA-NaOH).

This work shows the distribution of selected micropollutants in Paranoá Lake that receives effluents from the capital of Brazil and will be used to produce drinking water in order to avoid water scarcity. Source and drinking waters were also investigated.

The use of immobilized yeasts and aging on mannoproteins or lees seemed to be a promising treatment to achieve positive aroma notes in the volatile profile of sparkling wines.

The systems Burkholderia cepacia lipase (BCL) on pristine or functionalized multi-walled carbon nanotubes (MWCNTs) resulted in a 3-fold improvement in the conversion and in a 5-fold improvement in ee_s (enantiomeric excess of the substrate), when compared with free BCL. The support was reused for eight cycles. An increase in the thermal stability of BCL was confirmed by thermogravimetric analysis (TGA).

Graphical abstract shows the three studied tissues, the sequence of scientific work with relation to the investigation on single condition to prepare samples, analytical features, validation of analytical procedure and application.

The smaller nanoparticles aggregate to form the nanorods by growth via the targeted binding mechanism.

Porous carbon materials were prepared from Fe, Co and Ni diethyldithiocarbamate complexes. The effect of metallic center in the morphology of porous carbon structure and the electrochemical behavior of porous carbon materials were studied.

The graphical abstract schematically shows the surface air plasma setup for aqueous paraquat degradation. The production of reactive nitrogen species (RNS) and the ionic strength effect on paraquat degradations are shown in detail on the graphs.

Ophioglossum thermale Kom. was fermented with Talaromyces purpurogenus M18-11. T. purpurogenus is an effective strain to process O. thermale for improving the antioxidant activity.

A QuEChERS/GC-MS method was essential to quantitate the biological degradation of fipronil in soil fertilized with humic substances. We isolated more than two-dozens of microorganisms from such soil, and the most abundant, Burkholderia thailandensis, showed the capability to degrade fipronil into active metabolites.

An internal standard ¹H-qNMR (quantitative nuclear magnetic resonance) method was developed and validated for simple, accurate and fast quantification of 3,4-methylenedioxymethamphetamine (MDMA) in seized ecstasy tablets.

Fog sampler, an equipment used to collect fog samples at 2 roads in Sao Paulo City. Collected droplets coalesce and run down the strands, aided by gravity and aerodynamic drag, into a Teflon^r sample trough.

This work presents a simple and low-cost capillary electrophoresis (CE) method for ultra-fast (< 1 min) simultaneous determination of naphazoline in the presence of diphenhydramine or pheniramine or chlorpheniramine.

Regioselective modification of poly(2,3-epoxypropyl methacrylate-co-ethylene glycol dimethacrylate-co-methyl methacrylate) (poly(GMA-co-EDMA-co-MMA)) with resorcarenes.

Determination of the total amount of heavy metals present in soils is not a good index to estimate the bioavailability and toxicity of these elements. This work describes the use of the Mehlich-1 extractor for evaluating the availability of Cu, Zn, Mn, Ni, Cr and Cd in soil.