University of Almería

About: University of Almería is a education organization based out in Almería, Spain. It is known for research contribution in the topics: Population & Context (language use). The organization has 4674 authors who have published 10905 publications receiving 233036 citations. The organization is also known as: University of Almeria & Universidad de Almería.

Effects of service quality dimensions on behavioural purchase intentions: A study in public‐sector transport

Abstract: Purpose – This paper seeks to examine the relationship between service quality and behavioural purchase intentions in the public‐sector transport industry in Spain.Design/methodology/approach – The study first identifies five distinctive research streams in service quality. An empirical analysis is then carried out in which the SERVPERF scale is adapted to the study of service quality in the public‐sector transport industry. The study then examines the relationship between service quality and purchase intention using an aggregated ordered logit model.Findings – The findings confirm a relationship between the five dimensions of service quality and purchase intentions.Originality/value – The study provides a useful guide to research into service quality by identifying five distinctive streams of research on the field. The study also contributes from a methodological perspective by offering a measurement scale for service quality in the public‐sector transport industry. Finally, the study contributes to stud...

Synthesis, Characterization, and DNA Binding of New Water-Soluble Cyclopentadienyl Ruthenium(II) Complexes Incorporating Phosphines

Abstract: The new water-soluble ruthenium(II) chiral complexes [RuCpX(L)(L‘)]n+ (X = Cl, I. L = PPh3; L‘ = PTA, mPTA; L = L‘ = PTA, mPTA) (PTA = 1,3,5-triaza-7-phosphaadamantane; mPTA = N-methyl-1,3,5-triaza-7-phosphaadamantane) have been synthesized and characterized by NMR and IR spectroscopy and elemental analysis. The salt mPTA(OSO2CF3) was also prepared and fully characterized by spectroscopic techniques. X-ray crystal structures of [RuClCp(PPh3)(PTA)] (2), [RuCpI(PPh3)(PTA)] (3), and [RuCpI(mPTA)(PPh3)](OSO2CF3) (9) have been determined. The binding properties toward DNA of the new hydrosoluble complexes have been studied using the mobility shift assay. The ruthenium chloride complexes interact with DNA depending on the hydrosoluble phosphine bonded to the metal, while the corresponding compounds with iodide, [RuCpI(PTA)2] (1), [RuCpI(PPh3)(PTA)] (3), [RuCpI(mPTA)2](OSO2CF3)2 (6), and [RuCpI(mPTA)(PPh3)](OSO2CF3) (9), do not bind to DNA.

Production of microalgae using centrate from anaerobic digestion as the nutrient source

Abstract: In this paper freshwater microalgae production is studied using centrate from anaerobic digestion as the only nutrient source. The objective is not only to maximize biomass productivity but also to eliminate contaminants in order to release water which is clean enough for reuse in compliance with regulations. Experiments were performed indoors using two microalgae strains, Muriellopsis sp. and Pseudokirchneriella subcapitata, to establish the optimal centrate percentages within the culture medium. Results demonstrated that with 40–50% of centrate in the culture medium, productivity reached values of up to 1.13 and 1.02 g·l− 1·day− 1 for Muriellopsis sp. and P. subcapitata, respectively. In addition, the removal of nitrogen and phosphorous contained in the culture medium exceeded 90%, the COD at the outlet being lower than 100 mg·l− 1. Above 50% of centrate, toxicity exists and culture performance decreases. No nitrification was observed as the ammonium was completely consumed at centrate percentages lower than 20%. Muriellopsis sp. demonstrated itself to be the more robust strain tolerating higher ammonium concentrations as well as achieving a higher quantum yield, of up to 0.50 g·E− 1, and a higher nitrogen removal rate, of up to 47.5 mgN·l− 1·day− 1 and 3.8 mgP·l− 1·day− 1. Consequently, it is possible to use centrate from anaerobic digestion as the sole nutrient source for the production of freshwater microalgae, thus reducing the biomass production cost by avoiding the use of expensive and non-sustainable fertilizers; not to mention the returns obtained from treating this type of residue. This combination can help to increase the possibilities of producing biofuels from microalgae by means of coupling their production to other treatment processes.