1,865 research outputs found
Folic acid supplementation during pregnancy and its association with telomere length in children at four years: results from the inma birth cohort study
No full textPetermann-Rocha F., Valera-Gran D., Prieto-Botella D., Martens D.S., Gonzalez-Palacios S., Riaño-Galán I., Murcia M., Irizar A., Julvez J., Santa-Marina L., Tardón A., Sunyer J., Vioque J., Nawrot T., Navarrete-Muñoz E.-M
List of Evidences of the Turin Shroud
No full textThis paper derives from a very wide discussion in the Shroud Science Group and from an in progress paper published in 2005. It has the aim to present all the evidences detected on the Turin Shroud that can be useful for a discussion about the problem of the body image formation. Many hypotheses about the image formation have been proposed, but, up to now, none, scientifically testable, simultaneously satisfies all the facts detected on the Shroud. For this reason this paper will be helpful for future researchers who will study and propose new hypotheses.
A list of facts directly related to the Turin Shroud is synthetically presented. They are subdivided in Type A that are, in the author’s view, unquestionable facts and in Type B that are confirmed observations or conclusions based on a proof made in reference to Turin Shroud studies; in addition other facts or observations that were evidenced by some researchers but that are not accepted by others are also reported for completeness
Investigation on the Luminescence Properties of InMO4 (M = V5+, Nb5+, Ta5+) Crystals Doped with Tb3+ or Yb3+ Rare Earth Ions
No full textWe explore the potential of Tb- and Yb-doped InVO4, InTaO4, and InNbO4 for applications as phosphors for light-emitting sources. Doping below 0.2% barely change the crystal structure and Raman spectrum but provide optical excitation and emission properties in the visible and near-infrared (NIR) spectral regions. From optical measurements, the energy of the first/second direct band gaps was determined to be 3.7/4.1 eV in InVO4, 4.7/5.3 in InNbO4, and 5.6/6.1 eV in InTaO4. In the last two cases, these band gaps are larger than the fundamental band gap (being indirect gap materials), while for InVO4, a direct band gap semiconductor, the fundamental band gap is at 3.7 eV. As a consequence, this material shows a strong self-activated photoluminescence centered at 2.2 eV. The other two materials have a weak self-activated signal at 2.2 and 2.9 eV. We provide an explanation for the origin of these signals taking into account the analysis of the polyhedral coordination around the pentavalent cations (V, Nb, and Ta). Finally, the characteristic green (D-5(4) -> F-7(J)) and NIR (F-2(5/2) -> F-2(7/2)) emissions of Tb3+ and Yb3+ have been analyzed and explained
In the chinks of the academia machine: teaching translation and feminism in Italy
No full textThe paper outlines the difficulty of teaching translation and gender in the Italian academic context. It offers a perspective on a personal teaching experience delineating a syllabus and teaching activities in class
High-pressure characterization of multifunctional CrVO4
No full textThe structural stability and physical properties of CrVO4 under compression were studied by X-ray diffraction, Raman spectroscopy, optical absorption, resistivity measurements, and ab initio calculations up to 10 GPa. High-pressure X-ray diffraction and Raman measurements show that CrVO4 undergoes a phase transition from the ambient pressure orthorhombic CrVO4-type structure (Cmcm space group, phase III) to the high-pressure monoclinic CrVO4-V phase, which is proposed to be isomorphic to the wolframite structure. Such a phase transition (CrVO4-type → wolframite), driven by pressure, also was previously observed in indium vanadate. The crystal structure of both phases and the pressure dependence in unit-cell parameters, Raman-active modes, resistivity, and electronic band gap, are reported. Vanadium atoms are sixth-fold coordinated in the wolframite phase, which is related to the collapse in the volume at the phase transition. Besides, we also observed drastic changes in the phonon spectrum, a drop of the band-gap, and a sharp decrease of resistivity. All the observed phenomena are explained with the help of first-principles calculations
On the search for the electric dipole moment of strange and charm baryons at LHC
No full textPermanent electric dipole moments (EDMs) of fundamental particles provide powerful probes for physics beyond the Standard Model. We propose to search for the EDM of strange and charm baryons at LHC, extending the ongoing experimental program on the neutron, muon, atoms, molecules and light nuclei. The EDM of strange baryons, selected from weak decays of charm baryons produced in collisions at LHC, can be determined by studying the spin precession in the magnetic field of the detector tracking system. A test of symmetry can be performed by measuring the magnetic dipole moment of and baryons. For short-lived and baryons, to be produced in a fixed-target experiment using the 7 LHC beam and channeled in a bent crystal, the spin precession is induced by the intense electromagnetic field between crystal atomic planes. The experimental layout based on the LHCb detector and the expected sensitivities in the coming years are discussed.Permanent electric dipole moments (EDMs) of fundamental particles provide powerful probes for physics beyond the Standard Model. We propose to search for the EDM of strange and charm baryons at LHC, extending the ongoing experimental program on the neutron, muon, atoms, molecules and light nuclei. The EDM of strange Lambda baryons, selected from weak decays of charm baryons produced in pp collisions at LHC, can be determined by studying the spin precession in the magnetic field of the detector tracking system. A test of CPT symmetry can be performed by measuring the magnetic dipole moment of Lambda and anti-Lambda baryons. For short-lived Lambdac+ and Xic+ baryons, to be produced in a fixed-target experiment using the 7 TeV LHC beam and channeled in a bent crystal, the spin precession is induced by the intense electromagnetic field between crystal atomic planes. The experimental layout based on the LHCb detector and the expected sensitivities in the coming years are discussed
Geographical variability in mortality in urban areas: a joint analysis of 16 causes of death
No full textThe authors acknowledge the support of the research grants PI16/00670, PI16/00755, PI16/01004, PI16/01187, PI16/01273, PI16/01281, and PI18/01313 of Instituto de Salud Carlos III, co-funded with FEDER grants.Martinez-Beneito, M.A., Vergara-Hernández, C., Botella-Rocamora, P., Corpas-Burgos, F., Pérez-Panadés, J., Zurriaga, Ó., Aldasoro, E., Borrell, C., Cabeza, E., Cirera, L., Osinaga, J.D., Fernández-Somoano, A., Gandarillas, A., Lorenzo Ruano, P.L., Marí-Dell’olmo, M., Nolasco, A., Prieto-Salceda, M.D., Ramis, R., Rodríguez-Sanz, M., Sánchez-Villegas, P
Inverse problem of photoelastic fringe mapping using neural networks
No full textThis paper presents an enhanced technique for inverse analysis of photoelastic fringes using neural networks to determine the applied load. The technique may be useful in whole-field analysis of photoelastic images obtained due to external loading, which may find application in a variety of specialized areas including robotics and biomedical engineering. The presented technique is easy to implement, does not require much computation and can cope well within slight experimental variations. The technique requires image acquisition, filtering and data extraction, which is then fed to the neural network to provide load as output. This technique can be efficiently implemented for determining the applied load in applications where repeated loading is one of the main considerations. The results presented in this paper demonstrate the novelty of this technique to solve the inverse problem from direct image data. It has been shown that the presented technique offers better result for the inverse photoelastic problems than previously published works
Clinical patterns and outcomes of ischaemic colitis: Results of the Working Group for the Study of Ischaemic Colitis in Spain (CIE study)
No full textMontoro, M.A., Brandt, L.J., Santolaria, S., Gomollon, F., Puértolas, B.S., Vera, J., Bujanda, L., Cosme, A., Cabriada, J.L., Durán, M., Mata, L., Santamaría, A., Ceña, G., Blas, J.M., Ponce, J., Ponce, M., Rodrigo, L., Ortiz, J., Muñoz, C., Arozena, G., Ginard, D., López-Serrano, A., Castro, M., Sans, M., Campo, R., Casalots, A., Orive, V., Loizate, A., Titó, L., Portabella, E., Otazua, P., Calvo, M., Botella, M.T., Thomson, C., Mundi, J.L., Quintero, E., Nicolás, D., Borda, F., Martinez, B., Gisbert, J.P., Chaparro, M., Bernadó, A.J., Gómez-Camacho, F., Cerezo, A., Nuñez, E.C
A study of the hexose-6-phosphate dehydrogenase gene R453Q and 11 (beta)-hydroxysteroid dehydrogenase type 1 gene 83557 ins a polymorphisms in the polycystic ovary syndrome.
No full textContext: The R453Q variant in the hexose-6-phosphate dehydrogenase gene (H6PD) and 83557insA mutations in 11β-hydroxysteroid dehydrogenase (11βHSD) type 1 gene (HSD11B1) interact, resulting in cortisone reductase deficiency (CRD), a rare disorder characterized by a polycystic ovary syndrome (PCOS)-like phenotype.Objective: The objective was to study these mutations in PCOS.Design: The design was a case-control study.Setting: The study was conducted in an academic hospital.Participants: A total of 116 PCOS patients and 76 nonhyperandrogenic controls participated.Main Outcome Measures: Genotype distributions and influence ofgenotypes on clinical and biochemical variables and, in 28 patients and 12 controls, estimates of 11βHSD oxoreductase activity were the main outcome measures.Conclusions: Digenic triallelic genotypes of the H6PD R453Q variant and HSD11B1 83557insA mutation do not always cause CRD. On the contrary, the H6PD R453Q variant is associated with PCOS and might influence its phenotype by influencing adrenal activity
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