Excavando huesos en los museos. El caso de la necrópolis de "Los Millares"

X Congreso Nacional de Paleopatología. Univesidad Autónoma de Madrid, septiembre de 200

Examples of q-regularization

An Introduction to Hopf algebras as a tool for the regularization of relavent quantities in quantum field theory is given. We deform algebraic spaces by introducing q as a regulator of a non-commutative and non-cocommutative Hopf algebra. Relevant quantities are finite provided q\neq 1 and diverge in the limit q\rightarrow 1. We discuss q-regularization on different q-deformed spaces for \lambda\phi^4 theory as example to illustrate the idea.Comment: 17 pages, LaTex, to be published in IJTP 1995.1

La prescripción del ejercicio físico para personas mayores: valores normativos de la condición física

La evaluación de la condición física debe ser considerado como un aspecto a tener en cuenta a la hora de determinar la capacidad funcional de los ancianos. Debido a la no existía de unos valores referenciales, a partir de los cuales determinar el estado físico de los ancianos, y a las posibilidades que esta información nos daría, a la hora de prescribir ejercicio, fue lo que nos condujo a la llevar a cabo este estudio. El estudio etnográfico se llevó a cabo en la Comunidad Autónoma Gallega y en el se testaron a 159 hombres y 692 mujeres, todos mayores de 65 años e inscriptos en programas de actividad física. La muestra realizó voluntariamente las ocho pruebas de que consta la Batería E.C.F.A, mediante la cual se evaluó: 1)Composición corporal, 2)Fuerza máxima de prensión manual, 3)Equilibrio monopodal, 4)Fuerza resistencia abdominal, 5)Flexibilidad anterior del tronco, 6)Fuerza máxima de piernas, 7)Coordinación Oculo-manual (Agilidad manual) y 8)Resistencia Cardio-respiratoria (Caminar 2 Km)

Finalidades de la enseñanza de las ciencias en la Secundaria obligatoria : ¿Alfabetización científica o preparación propedéutica?

The purpose of this work is to find out the teachers' opinions regarding the aims and objectives of the teaching of science, within the frame of the educational reform. We attempt to disclose to what extent educational thinking gives priority to the training of the students in scientific concepts, laws and theories needed in further courses (propedeutic training) and how this thinking pays less attention to the so-called scientific literacy which is meant to be the main object of the teaching of science according to the designers of the curriculum. To achieve this, we carried out a multiple and convergent experimental design with a number of samples of teachers. We found a confirmation that in Secondary education, the curricular emphasis of teachers focuses on the propedeutic training of students

Feasibility of diffusion and probabilistic white matter analysis in patients implanted with a deep brain stimulator.

Deep brain stimulation (DBS) for Parkinson\u27s disease (PD) is an established advanced therapy that produces therapeutic effects through high frequency stimulation. Although this therapeutic option leads to improved clinical outcomes, the mechanisms of the underlying efficacy of this treatment are not well understood. Therefore, investigation of DBS and its postoperative effects on brain architecture is of great interest. Diffusion weighted imaging (DWI) is an advanced imaging technique, which has the ability to estimate the structure of white matter fibers; however, clinical application of DWI after DBS implantation is challenging due to the strong susceptibility artifacts caused by implanted devices. This study aims to evaluate the feasibility of generating meaningful white matter reconstructions after DBS implantation; and to subsequently quantify the degree to which these tracts are affected by post-operative device-related artifacts. DWI was safely performed before and after implanting electrodes for DBS in 9 PD patients. Differences within each subject between pre- and post-implantation FA, MD, and RD values for 123 regions of interest (ROIs) were calculated. While differences were noted globally, they were larger in regions directly affected by the artifact. White matter tracts were generated from each ROI with probabilistic tractography, revealing significant differences in the reconstruction of several white matter structures after DBS. Tracts pertinent to PD, such as regions of the substantia nigra and nigrostriatal tracts, were largely unaffected. The aim of this study was to demonstrate the feasibility and clinical applicability of acquiring and processing DWI post-operatively in PD patients after DBS implantation. The presence of global differences provides an impetus for acquiring DWI shortly after implantation to establish a new baseline against which longitudinal changes in brain connectivity in DBS patients can be compared. Understanding that post-operative fiber tracking in patients is feasible on a clinically-relevant scale has significant implications for increasing our current understanding of the pathophysiology of movement disorders, and may provide insights into better defining the pathophysiology and therapeutic effects of DBS