96 research outputs found
The economic value of landscape aesthetics in Albufera natural park through the analytic multicriteria valuation method
[EN] The effective definition of public intervention goals and resource allocation for natural resource management requires decision makers to understand the monetary values of the full range of goods and services provided by landscapes, in other words, their Total Economic Value (TEV). Aesthetic enjoyment (AE) can be considered as part of such TEV of landscapes. For the estimation of the economic value of AE in Albufera Natural Park (Valencia, Spain), this paper applies the Analytic Multicriteria Valuation Method (AMUVAM). It is a combination of two established techniques: analytic hierarchy process (AHP) and discount cash flow (DCF). The economic value of non-market benefits under AMUVAM is obtained indirectly, by comparing the relative degrees of importance attached to the different components of TEV. In this way, not only does it estimate a monetary value of AE but also its importance relative to TEV. Results express that AE represents 7% of the TEV in Albufera Natural Park and 24% of the EV in Albufera Natural Park ( 176 million). Results reveal distinct patterns in the valuation of TEV and existence value (EV). In this way, together with the average, a range of values which show the different sensitivities of society is provided. The comparison of the TEV obtained for Albufera Natural Park with previous studies conducted on wetlands suggests its similarity in scale.Estruch-Guitart, V.; Vallés-Planells, M. (2017). The economic value of landscape aesthetics in Albufera natural park through the analytic multicriteria valuation method. International Journal of Design & Nature and Ecodynamics. 12(3):281-302. doi:10.2495/DNE-V12-N3-281-302S28130212
Colicestectomia laparoscópica. Revisión de los primeros 500 pacientes
Inclou referències bibliogràfique
Estudio de un caso de externalización de la actividad logística como opción estratégica en el sector de la industria farmacéutica
Este trabajo presenta un caso de estudio de subcontratación estratégica en el sector farmacéutico, de
especial interés, al considerar esta opción empresarial desde el punto de vista de la empresa principal,
y también desde la visión de la empresa subcontratada. Forma parte de un trabajo de investigación más
amplio y ambicioso, aunque se ha optado por seleccionar este caso entre los diferentes estudiados al
ser uno de los más interesantes: por la doble visión antes comentada y por las características del sector
al que pertenece.This paper exhibits a strategic outsourcing case study in the pharmaceutical industry. It is specially
valuable because it shows a double viewpoint: the main company view and the outsourced company
view. This work is part of a broad and more ambitious investigation, which includes more cases, but
we have selected this one because of its special interest, not only because of its double point of view
but also because of its industry peculiarities
Tuning supramolecular aurophilic structures: the effect of counterion, positive charge and solvent
The synthesis of the cationic gold(I) complexes [Au(CuCC5H4N)(CH3-PTA)] X (X = I, 1; X = OTf, 4), [Au(C equivalent to CC5H4N-CH3)(PTA)] X (X = I, 2; X = OTf = 5; PTA = 1,3,5-triaza-7-phosphatricyclo[3.3.1.13.7]decane) and [Au(CuCC5H4N-CH3)(DAPTA)] X (X = I, 3; X = OTf = 6, DAPTA = 3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[ 3.3.1]nonane) results in cationic complexes with unexpected supramolecular assemblies in water ranging from rod-like structures (1) to vesicles (2 and 3) and square-like structures (5 and 6). These morphologies are completely different from the fibers previously obtained with their parent neutral complexes [Au(C equivalent to C5H4N)(PTA)] and [Au(C equivalent to C5H4N)(DAPTA)]. Nevertheless, the introduction of triflate as a counterion in 1 (complex 4) gives rise to the formation of a highly soluble complex in water which does not display any significant aggregation in solution. These results reveal the importance of the introduction of a positive charge on global supramolecular assemblies and how the counterion can also modify the resulting package. Interestingly, we have also proved that the aggregation of complexes 2, 3, 5 and 6 is also affected by the solvent with direct influence on their absorption and emission properties and the global morphology of the aggregates.Postprint (author's final draft
Contemporary 14C radiocarbon levels of oxygenated polybrominated diphenyl ethers (O-PBDEs) isolated in sponge–cyanobacteria associations
Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Marine Pollution Bulletin 62 (2011): 631-636, doi:10.1016/j.marpolbul.2010.12.022.Considerable debate surrounds the sources of oxygenated polybrominated diphenyl
ethers (O-PBDEs) in wildlife as to whether they are naturally produced or result from
anthropogenic industrial activities. Natural radiocarbon (14C) abundance has proven to
be a powerful tool to address this problem as recently biosynthesized compounds contain contemporary (i.e. modern) amounts of atmospheric radiocarbon; whereas
industrial chemicals, mostly produced from fossil fuels, contain no detectable 14C.
However, few compounds isolated from organisms have been analyzed for their
radiocarbon content. To provide a baseline, we analyzed the 14C content of four OPBDEs.
These compounds, 6-OH-BDE47, 2’-OH-BDE68, 2’,6-diOH-BDE159, and a
recently identified compound, 2’-MeO-6-OH-BDE120, were isolated from the
tropical marine sponges Dysidea granulosa and Lendenfeldia dendyi. The modern
radiocarbon content of their chemical structures (i.e. diphenyl ethers, C12H22O)
indicates that they are naturally produced. This adds to a growing baseline on, at least,
the sources of these unusual compounds.The project described was supported in part by Grant Numbers NA16RU1496 and
NA06OAR4300227 from the National Oceanic and Atmospheric Administration, and
Grant Number 5P20RR021929 from the National Center for Research Resources
Characteristics and management of patients with SARS-CoV2 infection admitted to pediatric intensive care units: Data analysis of the Spanish national multicenter registry
SARS-COV-2; Mechanical ventilation; Pediatric intensive careSARS-COV-2; Ventilació mecànica; Cures intensives pediàtriquesSARS-COV-2; Ventilacion mecanica; Cuidados intensivos pediátricosIntroduction
The purpose of this study is to describe the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV2) disease characteristics and management in children admitted to the pediatric intensive care units (PICU).
Methods
The present study was based on a national multicentric prospective registry including PICU patients with SARS-CoV2 infection or symptoms of multisystem inflammatory syndrome in children (MIS-C).
Results
A total of 298 patients were admitted to 41 different Spanish PICUs. A total of 76% of them were previously healthy. The most frequent manifestation was MIS-C (69.8%). On admission, 59.4% of patients did not have respiratory distress, and only 17.4% needed conventional mechanical ventilation (MV). The need for MV was associated with age (incidence rate ratios [IRR] 1.21, p < .012), pediatric sequential organ failure assessment score (p-SOFA) Score (IRR 1.12, p = .001), and need for transfusion (IRR 4.5, p < .004) in MIS-C patients, and with vasoactive drug use (IRR 2.73, p = .022) and the diagnosis of acute respiratory distress syndrome (IRR 2.83, p = .018) in patients admitted for other reasons. During the first day of admission, 56% of patients met shock criteria and 50.7% needed vasoactive drugs. In MIS-C patients, their use was associated with higher p-SOFA score (IRR 1.06, p < .001) and with the diagnosis of shock (IRR 5.78, p < .001). In patients without MIS-C, it was associated with higher p-SOFA score (IRR 1.05, p = .022). The mortality rate was 3%, being lower in MIS-C patients compared to patients admitted for other reasons (0.5% vs. 9.4%, p < .001). It was also lower in previously healthy patients compared to patients with previous comorbidities (0.9% vs. 9.7%, p < .001).
Conclusions
Severe SARS-CoV2 infection is uncommon in the pediatric population. In our series, respiratory distress was rare, being MIS-C the most frequent cause of PICU admission related to SARS-CoV2. In most cases, the course of the disease was mild except in children with previous diseases.This study has been founded by the Carlos III Health Institute (ISCIII) through the COVID-19 found. Ref. COV20-00944. The founder had no role in study design, data collection, analysis and interpretation
Alto contenido de metales en el molusco Pinna nobilis en el Archipiélago Balear (Mediterráneo occidental) y una revisión de las concentraciones en bivalvos marinos (Pinnidae)
Summary: Concentrations of metals (Cd, Cu, Hg, Pb and Zn) in the marine bivalve Pinna nobilis at several coastal locations of Majorca and the Cabrera Islands (Mediterranean Sea) were investigated. The elevated concentrations of metals found in the soft tissues of P. nobilis indicate high bioaccumulation factors. All concentrations and the calculated metal pollution index showed significant differences between sites, with particularly high concentrations in the Cabrera Archipelago, a marine protected area (MPA). The datasets were evaluated with the limited information published in the literature for Pinnidae species worldwide. In benthic P. nobilis, concentrations of Cd, Cu and Zn are more than 30 times higher and Hg and Pb concentrations are 4 and 7 times higher, respectively, than concentrations in other bivalve species, such as Mytilus galloprovincialis (Mytilidae). These observations from species inhabiting nearby ecological habitats of the coastal environment (Pinnidae vs. Mytilidae) are also discussed in the context of current marine monitoring strategies and assessmentsResumen: Se investigaron las concentraciones de metales (Cd, Cu, Hg, Pb y Zn) en el bivalvo marino Pinna nobilis en diferentes localidades costeras de las Islas de Mallorca y Cabrera (Mar Mediterráneo). Las elevadas concentraciones de metales que se encontraron en los tejidos blandos de P. nobilis revelaron una elevada bioacumulación. Las concentraciones de metales estudiadas, así como el índice de contaminación por metales (ICM) mostraron diferencias significativas entre los sitios, con concentraciones particularmente altas en el archipiélago de Cabrera, un área marina protegida (AMP). Se realizó una revisión bibliográfica de la escasa información publicada sobre las especies de la familia Pinnidae a nivel mundial. En comparación con otras especies de bivalvos, como Mytilus galloprovincialis (Mytilidae), la especie bentónica P. nobilis presentó concentraciones más de 30 veces superiores para Cd, Cu y Zn; y hasta 4 y 7 veces para Hg y Pb, respectivamente. La información recabada sobre estas especies que habitan en ecosistemas costeros (Pinnidae vs. Mytilidae) es discutida en el contexto de las actuales estrategias marinas de seguimiento y evaluaciónVersión del editor1,006
Assesing heavy metals in the marine bivalve Pinna nobilis in the Balearic Islands (western Mediterranean)
Heavy metals (Cd, Cu, Hg, Pb and Zn) concentration were determined in the marine bivalve Pinna nobilis along the Balearic Islands, comparing a protected area with two sites with strong anthropogenic influence. Analyses of Cabrera and Mallorca indicated that heavy metal concentration were generally higher in the most of samples, specially in Santa Maria bay (Cabrera, MPA), and Magaluf (Mallorca, with strong anthropogenic influence). Pinna nobilis appears to efficiently bioaccumulate heavy metals exhibiting large differences in a range of anthropic scenarios. The results on P. nobilis metal accumulation show that the concentrations decrease according to order: Zn > Cu >Pb> Cd > H
Favoreciendo el cambio emocional positivo hacia las ciencias en la formación inicial del profesorado
The aim of this work is to identify the emotions of the future teachers (FM) towards physics and chemistry, as well as look for evidences of their modification throughout the context of the subject ‘Didactics of Matter, Energy and Interaction (DMEI). The responses of a questionnaire passed to the FM about their emotions before and after coursing the subject show a remarkable modification of negative emotions towards positive emotions. These changes are related to the methodology implemented in the subject, specifically with the experimental character that it has. The results also suggest the challenge that the FM value the importance of the emotional aspects of the learning, as well as to give sense to the knowledge they learn.En este trabajo identificamos las emociones de los futuros maestros (FM) en relación con la física y la química, además de buscar evidencias de que estas sean modificadas a lo largo del contexto de la asignatura Didáctica de la Materia, la Energía y la Interacción (DMEI). Después de pasar un cuestionario a los FM sobre sus emociones antes y después de la asignatura, los resultados muestran una modificación notable de emociones negativas hacia emociones positivas. Dichos cambios se relacionan con la metodología de trabajo implementada en la asignatura, concretamente con el carácter experimental que tiene. Los resultados también sugieren el reto de favorecer que los FM valoren la importancia que tienen los aspectos emocionales del aprendizaje, así como el hecho de dar sentido a los conocimientos
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