Enginyeria Química i Química Analítica: Enviaments recents
Ara mostrant els elements 261-280 de 791
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 ...
Field-amplified sample injection-micellar electrokinetic capillary chromatography for the analysis of bisphenol A, bisphenol F, and their diglycidyl ethers and derivatives in canned soft drinks
Conditions were established for the separation and analysis of Bisphenol A (BPA), Bisphenol F (BPF), and their diglycidyl ethers, by micellar electrokinetic capillary chromatography (MECC). Good resolution was obtained for ...
Heat transfer in pipes with twisted tapes: CFD simulations and validation
Inserts are placed inside heat exchangers to promote turbulence and maximize the heat transferred. Twisted tapes enhance heat transfer with minimal pressure drop increase for double pipe heat exchangers. Their design ...
Natural Pyrolusite-Catalyzed Ozonation for Nanoplastics Degradation
The increasing prevalence of polystyrene nanoplastics (PSNPs) in aquatic environments poses significant risks due to their persistence and potential toxicity. Conventional water treatment methods have proven ineffective ...
Authentication of Honey Geographical Origin Using Liquid Chromatography-Low Resolution Mass Spectrometry (LC-LRMS) Fingerprints
Honey is a natural sweetener produced by honeybees and is widely appreciated by consumers because of its multiple beneficial properties. Because of its high value, honey is placed as a targeted product for fraudulent ...
Characterization, classification and authentication of turmeric and curry samples by targeted LC-HRMS polyphenolic and curcuminoid profiling and chemometrics
The importance of monitoring bioactive substances as food features to address sample classification and authentication is increasing. In this work, targeted LC-HRMS polyphenolic and curcuminoid profiles were evaluated as ...
Differential mobility spectrometry coupled to mass spectrometry (DMS−MS) for the classification of Spanish PDO paprika
Ion mobility spectrometry (IMS) has proved its huge potential in many research areas, especially when hyphenated with chromatographic techniques or mass spectrometry (MS). However, focusing on food analysis, very few ...
Micropollutant removal in real WW by photo-Fenton (circumneutral and acid pH) with BLB and LED lamps
In this study, photo-Fenton treatment was performed to remove a target compound (propranolol, PROP) from wastewaters of secondary effluents coming from WWTP. Two different radiation sources were tested: BLB and UV-A LEDs, ...
Multivariate data analysis for the detection of human alpha-acid glycoprotein aberrant glycosylation in pancreatic ductal adenocarcinoma
Relative quantification of human alpha-acid glycoprotein (hAGP) glycan isomers using [12C6]/[13C6]-aniline in combination with multivariate data analysis is proposed as an efficient method for the identification of pancreatic ...
Site-specific N-linked glycosylation analysis of human carcinoembryonic antigen by sheathless capillary electrophoresis-tandem mass spectrometry
With 28 potential N-glycosylation sites, human carcinoembryonic antigen (CEA) bears an extreme amount of N-linked glycosylation, and approximately 60% of its molecular mass can be attributed to its carbohydrates. CEA is ...
Classification of Hen Eggs by HPLC-UV Fingerprinting and Chemometric Methods
Hen eggs are classified into 4 groups according to their production method: organic, free-range, barn or caged. It is known that a fraudulent practice is the misrepresentation of a high quality egg with a lower one. In ...
Simultaneous voltammetric determination of heavy metals by use of crown ether-modified electrodes and chemometrics
A three‐sensor array consisting of a graphite‐epoxy composite electrode (GEC), 4‐carboxybenzo‐18‐crown‐6‐GEC and 4‐carboxybenzo‐15‐crown‐5‐GEC was employed for the simultaneous determination of Cd(II), Pb(II) and Hg(II) ...
Priority pesticide dichlorvos removal from water by ozonation process: reactivity, transformation products and associated toxicity
The treatability of waters contaminated with priority pesticide dichlorvos (DDVP) by means of ozonation has been assessed for the first time. In order to do so, reaction kinetics, transformation mechanisms and associated ...
Dispositivos móviles en la evaluación acreditativa del proceso de aprendizaje del estudiante con retroacción global e inmediata
La construcción del Espacio Europeo de Educación Superior (EEES, Declaración de Bolonia, 1999) se impulsó con el objetivo de potenciar la calidad y especialmente la competitividad internacional de la educación superior en ...
