Enginyeria Química i Química Analítica: Enviaments recents
Ara mostrant els elements 161-180 de 790
Capability of Far-Infrared for the selective identification of red and black pigments in paint layers
Artworks are complex objects that merit study and preservation. Far-infrared spectroscopy in ATR mode appears to be a suitable technique for this purpose because it enables information to be obtained regarding the material's ...
Material characterization and functional implications of a Claude Laurent Glass Flute
The Claude Laurent glass flutes (1805–1844) are singular elements that contributed to the transformation of musical instruments through the introduction of new styles and technologies. These flutes combine improved technical ...
Tadpole toxicity prediction using chromatographic systems
Toxicity has been emulated in tadpole species through chromatographic systems. The parameter studied to evaluate the non-specific toxicity of a compound is the narcosis concentration (Cnar), which is defined as the ...
Studies on the interactions of Ag(I) with DNA and their implication on the DNA-templated synthesis of silver nanoclusters and on the interaction with complementary DNA and RNA sequences
Silver nanoclusters (AgNCs) prepared by the reduction of silver ions in the presence of DNA oligonucleotides have attracted great interest as potential diagnostic tools for their tunable and high fluorescent properties. ...
Influence of EfOM on the oxidation of micropollutants by Ozone and UV/H2O2 in secondary effluents
The aim of this work was to study the influence of effluent organic matter (EfOM) on micropollutants removal by ozone and UV/H2O2. To perform the experiments, deionized water and municipal secondary effluents (SE) were ...
Influence of Dietary Inulin on Fecal Microbiota, Cardiometabolic Risk Factors, Eicosanoids, and Oxidative Stress in Rats Fed a High-Fat Diet
The present study examined the influence of inulin on fecal microbiota, cardiometabolic risk factors, eicosanoids, and oxidative stress in rats on a high-fat (HF) diet. Thirty-six male Wistar-Kyoto rats were divided into ...
Implementación de la metodología de estudio de casos en asignaturas de titulaciones de grado y máster de Química
La implementación de la metodología de estudio de casos, impulsada por el programa RIMDA y la Facultad de Química de la Universitat de Barcelona en distintas asignaturas teóricas y prácticas de titulaciones de grado y de ...
Gellan hydrogels: preparation, rheological characterization and application in encapsulation of curcumin
Hydrogels can be used to protect some labile active principles, as polyphenol-rich substances, that can be added to foods to prepare functional ones. Rheological properties of gels formed through the addition of calcium ...
Aprendizaje basado en proyectos como estrategia metodológica en laboratorios de química analítica
Se ha implementado la estrategia metodológica de Aprendizaje Basado en Proyectos (ABP) en la asignatura de Laboratorio Básico de Química Analítica del Grado de Química de la Universidad de Barcelona, con el fin de ...
Catalytic gasification of glycerol in supercritical water
The conversion of glycerol in supercritical water (SCW) was studied at 510-550 °C and a pressure of 350 bars using both a bed of inert and non-porous ZrO2 particles (hydrothermal experiments), and a bed of a 1% Ru/ZrO2 ...
Potentiometric CheqSol and standardized shake-flask solubility methods are complimentary tools in physicochemical profiling
The solubility of three drugs (glimepiride, pioglitazone, sibutramine) with different acid/base properties and expected supersaturation behavior was examined in detail using the shake-flask (SF) and potentiometric (CheqSol) ...
Skill development in experimental courses
Experimental courses offer a good opportunity to work with competences, promoting the incorporation of strategies oriented towards motivating students to actively involve in the learning process, promoting reflexive learning ...
Characterization and fate of EfOM during ozonation applied for effective abatement of recalcitrant micropollutants
Alterations occurring in the effluent organic matter (EfOM) during ozonation could be detrimental depending on the final application of the treated effluent. In this work, the fate of EfOM in different ozonized wastewaters ...
Effects of the presence of Fe(0) on the sorption of lanthanum and lutetium mixtures in smectites
The sorption of La and Lu mixtures was examined in two bentonites after incubation for three months at 20 and 80 °C with Fe(0), as a laboratory approach to evaluate the effects of waste canister corrosion in a deep repository ...
Desarrollo de una mentoria de profesor novel. Profesionalización docente mediante la alternancia. Implicación de la estructuras institucionales: Universidad, Departamento, Grupo Docente
Se presenta una experiencia piloto de mentorización de profesorado novel en la que se combinan dos ámbitos de trabajo distintos: el Departamento de Ingeniería Química y el Máster de Docencia de Profesorado Novel (Instituto ...
Olive mill and winery wastes as viable sources of bioactive compounds: a study on polyphenols recovery
In this study, the recovery of polyphenols from olive oil mill and winery waste was investigated. The performance of ultrasound assisted extraction (UAE), microwave assisted extraction (MAE), and pressurized liquid extraction ...
Method development for the simultaneous determination of methylmercury and inorganic mercury in seafood
This paper reports the method development for the simultaneous determination of methylmercury MeHgþ) and inorganic mercury (iHg) species in seafood samples. The study focused on the extraction and quantification of MeHgþ ...
Selective molecular probes for G-quadruplex and G-quadruplex–duplex junctions: Cyanine dye interactions and structural insight
There is growing interest in hybrid DNA structures, particularly G-quadruplex–duplex junctions, as potential ligand binding sites. In this work, we investigate the interaction of two cyanine dyes (R9 and 3b), which differ ...
Nano-TiO2 phototoxicity in fresh and seawater: Daphnia magna and Artemia sp. as proxies
Nowadays, the industry is quite commonly using nanoparticles of titanium dioxide (nTiO2)especially in sunscreens, due to its higher reflective index in comparison to micron size TiO2. It shigh demand causes its widespread ...
Microemulsion electrokinetic chromatography as a suitable tool for lipophilicity determination of acidic, neutral, and basic compounds
In the present work, several MEEKC systems are studied to assess their suitability for lipophilicity determination of acidic, neutral, and basic compounds. Thus, several microemulsion compositions over a wide range of pH ...
