359 research outputs found
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Isospin symmetry breaking in the mirror pair Sr-73-Br-73
No full textThe recent experimental observation of isospin symmetry breaking (ISB) in the ground states of the T = 3/2 mirror pair Sr-73-Br-73 is theoretically studied using large-scale shell-model calculations. The large valence space and the successful PFSDG-U effective interaction used for the nuclear part of the problem capture possible structural changes and provide a robust basis to treat the ISB effects of both electromagnetic and nonelectromagnetic origin. The calculated shifts and mirror-energy differences are consistent with the inversion of the I-pi = 1/2(-), 5/2(-) states between Sr-73 and Br-73 and suggest that the role played by the Coulomb interaction is dominant. An isospin breaking contribution of nuclear origin is estimated to be approximate to 25 keV
Contribution of laparoscopy to the treatment of gastric cancer: oncological gastrectomy (D2) by laparoscopy.
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Shell model analysis of the values in the B(E2, 2+ → 0+) values in the A = 70, T = 1 triplet 70Kr, 70Br, and 70Se
No full textThe transition strengths of the isobaric triplet recently measured at the RIKEN Radioactive Isotope Beam Factory (RIBF), are discussed in terms of state-of-the-art large scale shell model calculations using the JUN45 and plus Coulomb interactions. In this Letter we argue that, depending on the effective charges used, the calculations are either in line with the experimental data within statistical uncertainties, or the anomaly happens in rather than . In the latter case, we suggest that it can be due to the presence of a hitherto undetected state below the yrast state. Our results do not support a shape change of with respect to the other members of the isobaric multiplet
Laparoscopic procedures in patients who have previously undergone laparotomic operations
No full textService Design for Supportive Health Systems: Service proposition for Clear
No full textThis Master’s thesis looks at the development of a Service Design solution for a Supportive Health System in the field of nutrition. The project is scoped within Clear, a young organisation using Continuous Glucose Monitoring technology (CGM) to support better nutritional habits. This thesis applies a mixed-methods approach, integrating quantitative and qualitative data collection and analysis to answer the following questions: (1) How shall responsible parties generate a Preventive Health behaviour in the in- dividual? (2) How shall design parties integrate data in the design of Supportive Health Systems? And (3) How shall organisations deliver services that integrate Supportive Health Systems to facilitate Preventive Health Behaviour? The end goal of the final service solution presented in this thesis is to offer a proof of concept for a viable proposition in the emerging field of Personalised Nutrition. It is meant to be a guide for implementation to the collaborating organisation, and an actionable way to provide inspiration for key stakeholders of the field.Strategic Product Desig
Quadrupole Collectivity in Neutron-Rich Fe and Cr Isotopes
No full textIntermediate-energy Coulomb excitation measurements are performed on the N≥40 neutron-rich nuclei 66,68Fe and 64Cr. The reduced transition matrix elements providing a direct measure of the quadrupole collectivity B(E2;21+→01+) are determined for the first time in 68Fe42 and 64Cr40 and confirm a previous recoil distance method lifetime measurement in 66Fe40. The results are compared to state-of-the-art large-scale shell-model calculations within the full fpgd neutron orbital model space using the Lenzi-Nowacki-Poves-Sieja effective interaction and confirm the results of the calculations that show these nuclei are well deformed
Evaluación de la fibrosis hepática basada en la elastografía de transición en la práctica clínica habitual en pacientes con hepatitis crónica por virus C
No full textSegún la OMS, la infección por el VHC afecta a unos 185 millones de personas, con una prevalencia estimada 2-3%. En España la prevalencia varía de 1,6-2,6%. La hepatitis crónica por virus C es una causa muy importante de morbilidad y mortalidad, debido al desarrollo de cirrosis por un considerable porcentaje de pacientes. La fibrosis hepática constituye tanto un indicador de progresión hacia cirrosis como de predicción de respuesta al tratamiento; por lo que su determinación nos permite tomar decisiones sobre el inicio del tratamiento, valorar la respuesta al mismo y el pronóstico de la hepatitis. El patrón oro para conocer el grado de fibrosis es la biopsia hepática. Pero presenta una serie de limitaciones, ya que se trata de una técnica invasiva, en la que en ocasiones el tamaño de la muestra es insuficiente y con cierta subjetividad a la hora de ser valorada por el anatomopatólogo. En las últimas décadas se están desarrollando nuevos métodos que permiten estimar el grado de fibrosis, entre ellos destaca la elastografía de transición que permite conocer el grado de fibrosis midiendo la rigidez del tejido. Pero esta técnica ha presentado ciertas limitaciones en la determinación de la fibrosis significativa. En la presente tesis hemos desarrollado un modelo matemático que combina la elastografía hepática con parámetros clínicos y analíticos presentes en la práctica clínica habitual, que mejora la rentabilidad diagnóstica de la elastografía hepática, siendo además un método sencillo, accesible y reproducible
First spectroscopic study of V-63 at the N=40 island of inversion
No full textThe low-lying level structure of V-63 was studied for the first time by the inelastic proton scattering and the proton knock-out reaction in inverse kinematics. The comparison of the newly observed gamma-ray transitions at 696(8) keV and 889(16) keV with our shell-model calculations using the Lenzi-Nowacki-Poves-Sieja interaction established two excited states proposed to be the first 11/2(-) and 9/2(-) levels. The (p, p') excitation cross sections were analyzed by the coupled channel formalism assuming pure quadrupole as well as quadrupole+hexadecapole deformations. This resulted in large deformation parameters placing V-63 in the island of inversion located below Ni-68.</p
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