Search results for "Agua"
showing 10 items of 220 documents
Enteroparasites in Preschool Children on the Pacific Region of Nicaragua
2018
The aim of this study was to determine for the first time the prevalence of enteroparasites in preschool children originating from the seven departments of the Pacific region in Nicaragua. One stool sample of each of 1,217 children, from 6 months to 5 years of age, was collected and personal data were recorded on delivery of the container. Samples fixed in 10% formalin were processed by a formol-acetate concentration and a modified Ziehl–Neelsen technique. The overall prevalence of enteroparasite infections was 68.2% with a total of at least 20 species. Blastocystis hominis (45.5%), Giardia intestinalis (31.7%), Trichuris trichiura (8.2%), and Ascaris lumbricoides (5.2%) were the most preva…
Mercury exposure and risk of cardiovascular disease: a nested case-control study in the PREDIMED (PREvention with MEDiterranean Diet) study
2017
Background: Substantial evidence suggests that consuming 1-2 servings of fish per week, particularly oily fish (e.g., salmon, herring, sardines) is beneficial for cardiovascular health due to its high n-3 polyunsaturated fatty acid content. However, there is some concern that the mercury content in fish may increase cardiovascular disease risk, but this relationship remains unclear. Methods: The PREDIMED trial included 7477 participants who were at high risk for cardiovascular disease at baseline. In this study, we evaluated associations between mercury exposure, fish consumption and cardiovascular disease. We randomly selected 147 of the 288 cases diagnosed with cardiovascular disease duri…
Goigs a nostra Senyora de Aygues Vives, venerada en lo Convent de Agustinos de la Vila de Carcaixent.
El full orlat Grav. xil. enmarcat de la Mare de Déu, flanquejat per gerros amb flors Text del goig a tres col. separades per filets
Goigs a nostra Senyora de Aygues Vives, venerada en lo Convent de Agustinos de la Vila de Carcaixent.
El full orlat Grav. xil. enmarcat de la Mare de Déu, flanquejat per gerros amb flors Text del goig a tres col. separades per filets
Gochs a nostra Senyora de Aygues Vives, venerada en el Convent de Agustinos de la Vila de Carcaixent
El full orlat Grav. xil. enmarcat de la Mare de Déu, flanquejat per gerros amb flors Text del goig a tres col. separades per filets
Pues si el mas docto sincel [...] hizo copia del cielo; se nuestro amparo y consuelo, Virgen Madre de Montiel
Com a tít. la primera estrofa, donat que del tít. no es pot llegir quasi res, sols les paraules Montiel i Benaguasil El full orlat Grav. xil. enmarcat de la Mare de Déu de Montiel, flanquejat per gerros amb flors Text del goig a tres col. separades per bandes
Effect of Chitin Whiskers on the Molecular Dynamics of Carrageenan-Based Nanocomposites
2019
[EN] Films of carrageenan (KC) and glycerol (g) with different contents of chitin nanowhiskers (CHW) were prepared by a solution casting process. The molecular dynamics of pure carrageenan (KC), carrageenan/glycerol (KCg) and KCg with different quantities of CHWs as a filler was studied using dielectric relaxation spectroscopy. The analysis of the CHW effect on the molecular mobility at the glass transition, T-g, indicates that non-attractive intermolecular interactions between KCg and CHW occur. The fragility index increased upon CHW incorporation, due to a reduction in the polymer chains mobility produced by the CHW confinement of the KCg network. The apparent activation energy associated…
District metered area design through multicriteria and multiobjective optimization
2022
[EN] The design of district metered areas (DMA) in potable water supply systems is of paramount importance for water utilities to properly manage their systems. Concomitant to their main objective, namely, to deliver quality water to consumers, the benefits include leakage reduction and prompt reaction in cases of natural or malicious contamination events. Given the structure of a water distribution network (WDN), graph theory is the basis for DMA design, and clustering algorithms can be applied to perform the partitioning. However, such sectorization entails a number of network modifications (installing cut-off valves and metering and control devices) involving costs and operation changes,…
Magnetic molecularly imprinted polymer for the simultaneous selective extraction of phenoxy acid herbicides from environmental water samples
2022
[EN] A selective magnetic molecularly imprinted polymer (MMIP) was synthetized with 4-chloro-2-methylphenoxyacetic acid as template and 4-vinylpiridine as monomer in presence of vinylized magnetite nanoparticles. Scanning electron microscopy, nitrogen adsorption-desorption isotherms, Fourier transform infrared spectrometry and vibrating sample magnetometry were applied to characterize the resulting material. The synthesized MMIP was applied as sorbent in magnetic molecularly imprinted solid-phase extraction (MMISPE) for selective extraction of a mixture of the five herbicides 4-chloro-2-methylphenoxyacetic acid (MCPA), 4-(4-chloro-2-methylphenoxy)butyric acid (MCPB), mecoprop (MCPP), fenoxa…
Fluoruro en aguas minerales naturales envasadas en España y prevención de la caries dental
2015
ResumenObjetivoEl propósito del estudio es conocer la concentración en flúor de las aguas minerales naturales comercializadas en España para poder prevenir la caries dental sin el riesgo de causar fluorosis dental.DiseñoEstudio descriptivo y transversal a lo largo de 2012.EmplazamientoAguas minerales naturales comercializadas en España.ParticipantesTres muestras con fechas distintas de embotellado de 109 marcas de aguas minerales naturales (97 marcas españolas y 12 aguas importadas).Medición principalDeterminación analítica por cromatografía iónica del contenido en fluoruro en el agua.ResultadosLa concentración mediana de fluoruro de las aguas minerales naturales españolas es de 0,22 (rango…