Thesis Collection
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Browsing by Unesco subject "23 Química"
Now showing items 1-20 of 90
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A Mathcad‐based educational experience to address the design of nonisothermal plug flow reactors
Cuadri Vega, Antonio Abad
; Gallego Calvo, Rocío; Martín Alfonso, María José; Delgado Sánchez, Clara; Cortés Triviño, Esperanza; Tenorio Alfonso, Adrián; Borrero López, Antonio María; Ortega Bravo, Francisco José (Wiley, 2022)
Mathcad is a simple-to-use and intuitive mathematical software that helps students to minimize the mathematical difficulties involved in solving engineering problems. The design of nonisothermal plug flow reactors (PFR) ... -
A Quantitative Model for Alkane Nucleophilicity Based on C−H Bond Structural/Topological Descriptors
Besora, María; Olmos Verge, Andrea; Noverges, Bárbara; Asensio, Gregorio; Caballero Bevia, Ana; Maseras, Feliu; Pérez Romero, Pedro José (Wiley, 2020)
A first quantitative model for calculating the nucleophilicity of alkanes is described. A statistical treatment was applied to the analysis of the reactivity of 29 different alkane C−H bonds towards in situ generated metal ... -
A sustainable methanol-based solvent exchange method to produce nanocellulose-based ecofriendly lubricants
Roman, Claudia; García Morales, Moisés; Eugenio, María Eugenia; Ibarra, David; Martín Sampedro, Raquel; Delgado Canto, Miguel Ángel (Elsevier, 2021)
A prospective methodology aimed to develop totally sustainable oleogels with potential application in lubrication is reported. Oleogels were prepared with cellulose nanofibrils from elm pulps in castor oil. Even at a ... -
Aerobic Intramolecular Carbon-Hydrogen Bond Oxidation Promoted by Cu(I) Complexes
Álvarez, María; Molina, Francisco; Romero Fructos-Vázquez, Manuel; Urbano Baena, Juan; Álvarez, Eleuterio; Sodupe, Mariona; Lledós, Agustí; Pérez Romero, Pedro José (Royal Society of Chemistry, 2020-09)
The oxidation of C–H bonds by copper centres in enzymes with molecular oxygen takes place in nature under ambient conditions. Herein we report a similar transformation in which under ambient pressure and temperature (1 ... -
Ageing Effects on a Softened Bitumen by the Addition of DSA (Dodecenyl Succinic Anhydride)
Ortega Bravo, Francisco José; Cuadri Vega, Antonio Abad; Partal López, Pedro; Navarro Domínguez, Francisco Javier (MDPI, 2022-06)
The softening of aged bitumen is necessary for a successful asphalt rejuvenation in road recycling operations. Thus, this study proposes a novel and successful approach by using Dodecenyl Succinic Anhydride (DSA), a ... -
Alkoxydiaminophosphine Ligands as Surrogates of NHCs in Copper Catalysis
Pizarro, Juan Diego; Molina, Francisco; Romero Fructos-Vázquez, Manuel; Pérez Romero, Pedro José (Wiley, 2020-08)
A family of phosphine ligands containing a five‐membered ring similar to the popular N‐heterocyclic carbene ligands and an alkoxy third substituent has been developed. These alkoxydiaminophosphine ligands (ADAP) can be ... -
Antagonistic Interaction of Selenium and Cadmium in Human Hepatic Cells Through Selenoproteins
Ramírez Acosta, Sara; Uhlírová, R.; Navarro Roldán, Francisco Juan; Gómez Ariza, José Luis; García Barrera, Tamara (Frontiers Media, 2022)
Cadmium (Cd) is a highly toxic heavy metal for humans and animals, which is associated with acute hepatotoxicity. Selenium (Se) confers protection against Cd-induced toxicity in cells, diminishing the levels of ROS and ... -
Antioxidant, Antimicrobial, and Bioactive Potential of Two New Haloarchaeal Strains Isolated from Odiel Salterns (Southwest Spain)
Gómez Villegas, Patricia; Vigara Fernández, Javier; Vila Spinola, Marta; Varela, João; Barreira, Luísa; León Bañares, Rosa María (2020-09-18)
The need to survive in extreme environments has furnished haloarchaea with a series of components specially adapted to work in such conditions. The possible application of these molecules in the pharmaceutical and industrial ... -
Arylisoquinoline-derived organoboron dyes with a triaryl skeleton show dual fluorescence
Fernandes Pais, Vania Cristina; Neumann, Tristan; Vayá, Ignacio; Jiménez Molero, María Consuelo; Ros, Abel; Pischel, Uwe (Beilstein-Institut, 2019)
Four new dyes that derive from borylated arylisoquinolines were prepared, containing a third aryl residue (naphthyl, 4-methoxynaphthyl, pyrenyl or anthryl) that is linked via an additional stereogenic axis. The triaryl ... -
Biocompatible and Thermoresistant Hydrogels Based on Collagen and Chitosan
(MDPI, 2022)Hydrogels are considered good biomaterials for soft tissue regeneration. In this sense, collagen is the most used raw material to develop hydrogels, due to its high biocompatibility. However, its low mechanical resistance, ... -
Biodegradation of a Complex Phenolic Industrial Stream by Bacterial Strains Isolated from Industrial Wastewaters
Bartolomé, Alejandra; Rodríguez Moro, Gema; Fuentes Cordero, Juan Luis; Lopes, Mariana; Frontela, Juana; Lázaro, Jesús; Cuaresma Franco, María; Gómez Ariza, José Luis; García Barrera, Tamara; Vílchez Lobato, Carlos (MDPI, 2021)
Molecular and metabolomic tools were used to design and understand the biodegradation of phenolic compounds in real industrial streams. Bacterial species were isolated from an industrial wastewater treatment plant of a ... -
Bioethanol Production and Alkali Pulp Processes as Sources of Anionic Lignin Surfactants
Álvarez Barajas, Rodrigo; Cuadri Vega, Antonio Abad; Navarro Domínguez, Francisco Javier; Martínez Boza, Francisco José (MDPI, 2021)
Lignin is an abundant biopolymer with potential value-added applications that depend on biomass source and fractioning method. This work explores the use as emulsifiers of three native lignin-rich product coming from ... -
Bis-borylated arylisoquinoline-derived dyes with a central aromatic core: towards efficient fluorescent singlet-oxygen photosensitizers
Campos González, René; Vázquez Domínguez, Pablo; Remón Ruiz, Patricia; Nájera, Francisco; Collado, Daniel; Pérez Inestrosa, Ezequiel; Boscá Mayans, Francisco; Ros, Abel; Pischel, Uwe (Royal Society of Chemistry, 2022)
Conveniently modified polycyclic aromatic hydrocarbon (PAH) fluorophores are obtained by a bromination–borylation sequence. The bis-borylated dyes show red-shifted absorption (λabs,max > 450 nm) and emission (λf,max > 500 ... -
Characterization and Analysis of the Carbonation Process of a Lime Mortar Obtained from Phosphogypsum Waste
Romero Hermida, M. I.; Borrero López, Antonio María; Flores Alés, V.; Alejandre, Francisco Javier; Franco Gómez, José María; Santos, Alberto; Esquivias, Luis (MDPI, 2021)
This work addresses the reuse of waste products as a raw material for lime putties, which are one of the components of mortar. 1:3 Lime/sand mortars very similar to conventional construction mortars were prepared using ... -
Characterization and production of agglomerated cork stoppers for spirits based on a factor analysis method
(Elsevier, 2022)The decision-making in the investment of a new line of stoppers based on agglomerated cork requires knowledge of the composition and its contribution to its performance. For this, it is necessary to observe the leading ... -
Cognitive Keys in Psychophysical Estimation of Chemosensory Perception in University Students
Martínez Sánchez, Laura María; Parra Martínez, Cecilio; Martínez García, Tomás Eugenio; Martínez García, Concepción (MDPI, 2021)
Psychophysical methods allow us to measure the relationship between stimuli and sensory perception. Of these, Detection Threshold (DT) allows us to know the minimum concentration to produce taste identification. Given this, ... -
Coinage metal complexes bearing fluorinated N-Heterocyclic carbene ligands
Delgado Rebollo, Manuela; García Morales, Cristina; Maya, Celia; Prieto Cárdenas, María Auxiliadora; Echavarren, Antonio M.; Pérez Romero, Pedro José (Elsevier, 2019-10)
The synthesis of novel fluorinated symmetrical and unsymmetrical imidazolium salts as well as their corresponding coinage metal complexes is described. The silver derivatives were prepared using Ag2O as the metal source ... -
Contribution of anthropogenic and natural sources in PM10 during North African dust events in Southern Europe
Millán Martínez, María; Sánchez-Rodas Navarro, Daniel Alejandro; Sánchez de la Campa Verdona, Ana María; Rosa Díaz, Jesús de la (Elsevier, 2021)
The influence of North African (NAF) dust events on the air quality at the regional level (12 representative monitoring stations) in Southern Europe during a long time series (2007–2014) was studied. PM10 levels and ... -
Copper-catalysed radical reactions of alkenes, alkynes and cyclopropanes with N–F reagents
Muñoz Molina, José María; Rodríguez Belderraín, Tomás; Pérez Romero, Pedro José (Royal Society of Chemistry, 2020-10)
The mild generation of nitrogen-centred radicals from N–F reagents has become a convenient synthetic tool. This methodology provides access to the aminative difunctionalisation of alkenes and alkynes and the radical ...
