Enginyeria Química i Química Analítica: Envíos recientes
Mostrando ítems 241-260 de 791
Adsorption and photocatalytic decomposition of the beta-blocker metoprolol in aqueous titanium dioxide suspensions: Kinetic, intermediates and degradation pathways
This study reports the photocatalytic degradation of the β-blocker metoprolol (MET) using TiO2 suspended as catalyst. A series of photoexperiments were carried out by a UV lamp, emitting in the 250–400 nm range, providing ...
Education and training in radioecology during the EU-COMET project-successes and suggestions for the future
The 2014 Strategic Research Agenda (SRA) for Radioecology identified the key challenge in education and training (E&T) as being 'to maintain and develop a skilled workforce in Europe and world-wide, through university ...
Authentication of the origin, variety and roasting degree of coffee samples by non-targeted HPLC-UV fingerprinting and chemometrics. Application to the detection and quantitation of adulterated coffee samples
In this work, non-targeted approaches relying on HPLC-UV chromatographic fingerprints were evaluated to address coffee characterization, classification, and authentication by chemometrics. In general, HPLC-UV fingerprints ...
Comblike poly(a-alkyl g glutamate)s: computer simulation studies of an intermediate thermal phase.
Monte Carlo (MC) simulations have been used to study the structure of an intermediate thermal phase of poly(R-octadecyl ç,D-glutamate). This is a comblike poly(ç-peptide) able to adopt a biphasic structure that has been ...
Desarrollo y evaluación de competencias transversales (comunicación oral) y validación de las rúbricas de la asignatura de grado Experimentación en Ingenieria Química II
Oral communication generic skill was development and assessed in 'Chemical Engineering Experimentation' subject of the Chemical Engineering Undergraduate Degree of University of Barcelona by means of rubrics. Meanwhile, ...
Study of the oligomerization of 1-octene catalyzed by macroreticular ion-exchange resins
Oligomerization of 1-octene is a feasible alternative to improve the properties and the quality of fuels and lubricants oils. The performance of macroreticular ion-exchange resins as catalysts for such reaction has been ...
Determination and characterization of quinolones in foodstuffs of animal origin by CE-UV, LC-UV, LC-Fl, LC-MS and LC-MS/MS
In this work methods for the multiresidue determination of the series of quinolones include in the European regulation in food of animal origin are de veloped and validated in line with Commission Decision 2002/657/EC in ...
Stabilization of c-KIT G-Quadruplex DNA structures by the RNA polymerase I inhibitors BMH-21 and BA-41
The stabilization of G-quadruplex DNA structures by small molecules with affinity to oncogene promoters has emerged as a promising anticancer strategy, due to a potential role in gene expression regulation. We explored the ...
Reclamation of impacted urban phreatic water through nanofiltration technology: Insight on natural organic matter removal by fluorescence spectroscopy
Nanofiltration (NF) is a promising technology called to play a relevant role in water reclamation, which lies in the core of circular economy in the water sector. The aim of this study was to assess two aromatic polyamide-based ...
Dealing with missing data blocks in Multivariate Curve Resolution. Towards a general framework based on a single factorization model.
Multivariate Curve Resolution (MCR) deals with the mixture analysis problem by decomposing a data set with mixed information into a bilinear model of pure component contributions. Multiset analysis deals with fused data ...
Exploring the Interaction of G-quadruplex Binders with a (3 + 1) Hybrid G-quadruplex Forming Sequence within the PARP1 Gene Promoter Region
The enzyme PARP1 is an attractive target for cancer therapy, as it is involved in DNA repair processes. Several PARP1 inhibitors have been approved for clinical treatments. However, the rapid outbreak of resistance is ...
Determination of acidity constants and prediction of electrophoretic separation of amyloid beta peptides
In this paper we describe a strategy to estimate by CE the acidity constants (pKa) of complex polyprotic peptides from their building peptide fragments. CE has been used for the determination of the pKas of five short ...
Chemometrics and electrochemistry: a useful tandem to be shown to university students
A short discussion is given of the convenience of integrating electrochemistry and chemometrics in university degrees related to chemistry, and some selected examples are presented to illustrate the possibilities of combining ...
Effect of vinylpyrrolidone polymers on the solubility and supersaturation of drugs; a study using the Cheqsol method
The development of methods to increase the bioavailability of drugs is of great interest, especially for those which are poorly soluble or permeable. One of the strategies to enhance the solubility (which in turn has the ...
New discrimination tools for harvest year and varieties of white wines based on hydrophilic interaction liquid chromatography with amperometric detection
A simple HPLC-EC method based on hydrophilic interaction liquid chromatography with amperometric detection through gold screen-printed electrodes has been developed and applied for the first time to the determination of ...
Fiber-like Action of D-Fagomine on the Gut Microbiota and Body Weight of Healthy Rats
The goal of this work is to explore if the changes induced by D-fagomine in the gut microbiota are compatible with its effect on body weight and inflammation markers in rats. Methods: Sprague Dawley rats were fed a standard ...
Nature-based solution as an efficient wastewater pretreatment to enhance micropollutants abatement by solar photo-Fenton at natural pH
This study investigated an innovative and low-cost hybrid system that couples constructed wetland (CW) and solar photo-Fenton (SPF) to enhance the elimination of 17 different micropollutants (MPs) from urban wastewater. ...
Hydroxyl radical and UV-induced reactions of bisphenol analogues inwater: Kinetics, transformation products and estrogenic activity estimation
There is currently a concern about the endocrine-disrupting capacity of many bisphenol A substitutes, such as BPAF, BPAP, BPB, BPC, BPC-Cl, BPE, BPF, BPS and BPZ in natural waters. However, fundamental data (i.e., kinetics ...
Integration of nanofiltration and reverse osmosis technologies in polyphenols recovery schemes from winery and olive mill wastes by aqueous-based processing.
More sustainable waste management in the winery and olive oil industries has become a major challenge. Therefore, waste valorization to obtain value-added products (e.g., polyphenols) is an efficient alternative that ...
Study of the Photobleaching Phenomenon to optimize Acquisition of 3D and 4D fluorescence images. A special scenario for trilinear and quadrilinear models.
Emission (3D) and excitation-emission (4D) fluorescence images allow covering wide excitation and emission spectral ranges and, hence, provide very complete information for a good characterization and location of fluorophores ...
