Browsing by Subject "Multivariate analysis"

Now showing 1 - 3 of 3
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    Contribution of critical doses of iprovalicarb, mepanipyrim and tetraconazole to the generation of volatile compounds from Monastrell-based wines
    (Elsevier, 2023-03-01) Sieiro-Sampedro, Thais; Figueiredo-González, María; Garzón-Vidueira, Raúl; Cancho-Grande, Beatriz; González-Barreiro, Carmen; Cámara, Miguel A.; Oliva, José; Rial-Otero, Raquel; Química Agrícola, Geología y Edafología
    The individual effects of iprovalicarb, mepanipyrim, and tetraconazole on the volatile composition and aromatic profile of Monastrell-based wines were evaluated. To date, no studies about the effect of these fungicides on Monastrell-based wines are available, and the effect on other grape varieties is also unknown. Fungicides were added separately in the cellar to the grape must at two concentration levels (4 and 10 mg/kg for iprovalicarb and mepanipyrim and 1 and 2.5 mg/kg for tetraconazole). The aromatic composition of the final wines was analysed by gas chromatography using flame ionisation and ion trap mass selective detectors. In the presence of fungicides, the most significant variations were observed for isoamyl acetate and 2-phenylethyl acetate (increasing between 20 and 43% compared with the control wine) and ethyl caprate and caprylate (increasing between 12 and 68%). Consequently, treated wines showed a higher global odourant intensity, with increased fresh fruit notes.
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    Posibilidades del escalamiento multidimensional en la modelización de desajustes asociados a la reforma de planes de estudio universitarios
    (Universidad de Murcia. Servicio de Publicaciones, 2004-07-01) Rodríguez Sabiote, Clemente; Gutiérrez Pérez, José; Fernández Cano, Antonio
    This article shows the usefulness of the MultiDimensional Scaling (MDS) a multivariate analysis technique to obtain founded inferences with good reason about different aspects, in this case, about problems related to the new reformed syllabus implemented in the Spanish university. Taking as reference the opinion of a representative sample of students from the Faculty of Education of the University of Granada, we have completed a survey study whose results have been analysed by means of MDS. These results indicate the presence of two different dimensions of problems: according to the character (structural and educational problems) and according to level of incidence (high gravity and low gravity).
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    Whiplash-associated disorders. Biopsychosocial profiles of pain perception in forensic cases of victims of motor vehicle accidents
    (Frontiers Media, 2021-08-01) Pina, David; Puente López, Esteban; Ruiz Hernández, José Antonio; Luna Ruiz-Cabello, Aurelio; Aguerrevere, Luis; Magalhães, Teresa; Psiquiatría y Psicología Social
    In order to make a complete diagnosis of all the factors influencing whiplash associated disorders (WAD), the evidence suggests that the condition evaluation should follow an integrated biopsychosocial model. This perspective would offer a fuller view of it, recognizing the interplay between the medical, biomechanical, social, and psychological factors. Despite the progress made in the subject, evidence of which psychosocial factors influence the experience of pain in litigant WAD patients is limited. A cross-sectional design and a cluster analysis was used to study the experience of pain and the psychosocial factors included therein in 249 patients with WAD assessed after suffering a motor vehicle accident. Three clusters were obtained: C1, with low scores of pain and a slight-moderate alteration of the Health-Related Quality of Life (HRQoL); C2, with medium scores of pain, alteration of HRQoL and a perception of moderate disability; and C3, with medium-high scores of pain, alteration of the HQoL, perception of moderate disability, presence of anxious-depressive symptomatology, poorer comprehension of the condition suffered, and the belief that it will extend over a long period of time. The results show a heterogeneous experience of pain in WAD, compatible with the biopsychosocial model of disease and the multidimensional approach to pain. The role of the psychologist in the evaluation of the condition could be useful to obtain a complete view of the condition, thus ensuring that the treatment is adapted to the needs of the patient.