Félix Antonio López

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The production of phosphoric acid from natural phosphate rock by the wet process gives rise to an industrial by-product called phosphogypsum (PG). About 5 tons of PG are generated per ton of phosphoric acid production, and worldwide PG generation is estimated to be around 100-280 Mt per year. This by-product is mostly disposed of without any treatment,(More)
The contribution of central serotonergic pathways to the analgesic activity induced by salmon calcitonin in the writhing test was investigated. Salmon calcitonin was administered to mice after lesioning of the ascending and descending serotonergic pathways by means of i.p. administration of p-chloroamphetamine (40 mg/kg, for 2 days) or p-chlorophenylalanine(More)
European Directive 2013/39/EU records mercury as a priority hazardous substance. Regulation n° 2008/1102/EC banned the exportation of mercury and required the safe storage of any remaining mercury compounds. The present work describes the encapsulation of three wastes containing combinations of HgS, HgSe, HgCl2, HgO2, Hg3Se2Cl2, HgO and Hg(0), according to(More)
A study is made of the use of a steel-making by-product (rolling mill scale) as a material for removing Cu(2+) ions from aqueous solutions. The influence of contact time, initial copper ion concentration and temperature on removal capability is considered. The removal of Cu(2+) ions from an aqueous solution involves two processes: on the one hand, the(More)
1. When the analgesic effect of salmon-calcitonin (S-CT) and of eel-calcitonin (E-CT), as well as their influence on the morphine-analgesia were compared, no significant differences were found. 2. While on isolated tissues, E-CT induced a significant increase on the effect of bremazocine, [D-Pen2,D-Pen5]enkephalin and [Met5]enkephalin and no changes were(More)
Most grassland soils in western European countries are acidic in their natural state and require a liming material to bring them to their optimum pH. A study was conducted to determine whether Linz-Donawitz (LD) slag, a by-product of the iron and steelmaking industry, could be used as a dolomitic agent for pastures. Six rates of slag (0, 1, 1.5, 3, 5, and(More)
In this paper we present the results of the formation of black HgS (metacinnabar) from liquid mercury and elemental sulfur using the mechanical energy provided by a ball mill in different conditions. Metacinnabar formation was observed even after short milling times (15 min) and unreacted liquid mercury was no longer detected after 60 min of milling. The(More)
The aim of this research was to determine the prevalence of sexual abuse in Spain and its long and short effects. A representative sample of Spanish society was studied (N = 1.821) through proportional stratified random sampling. Data were obtained by interview (Personal History of Sexual Abuse), carried out in the subjects home and by means of a Self(More)
1. The effects of clonidine, nimodipine and diltiazem, on the in vitro withdrawal contracture induced by naloxone in the guinea-pig ileum obtained from morphine-dependent animals, were evaluated. 2. The in vitro incubation with clonidine (0.01, 0.1 and 1 microM), diltiazem (0.25, 0.1 and 1 microns) or nimodipine (0.05, 0.1 and 1 microns) reduced(More)
1. Nimodipine, diltiazem and BAY K 8644 decreased the incidence of wet dog shakes, teeth chattering, grooming and diarrhoea to a similar degree of clonidine. 2. Nimodipine, diltiazem and BAY K 8644 had no effect on changes in the serotonin metabolism induced by naloxone precipitated abstinence syndrome. 3. Clonidine decreased the ratio of serotonin turnover(More)