Estudio bioestratigráfico (Ammonoidea) del Aaleniense y Bajociense en Asturias

Se ha reconocido un conjunto de parámetros tafonómicos que están íntimamente relacionados con las condiciones de depósito y con los procesos de diagénesis temprana. Las secuencias de parámetros tafonómicos establecidas permiten confirmar el carácter regresivo local de la sedimentación. Los factores tectónicos han debido jugar el papel fundamental en la evolución de la cuenca sedimentaría durante el Aaleniense y el Bajociense. Las asociaciones faunísticas, reconocidas a escala zonal y subzonal, son consideradas como sub-boreales y equivalentes a las del NW de Europa. [ABSTRACT] A set of taphonomic parameters related to depositional conditions and early diagenetic processes has been recogniced. The sequences of taphonomic parameters confirm fue regresive character of fue local sedimentation. The evolution of the sedimentary basin has been controlled mainly by tectonic factors during fue Aalenian and fue Bajocian. The ammonite assemblages are considered as subboreals and equivalents to those of NW Europa

New system for measuring impact vibration on floor decking sheets

The present paper exposes an alternative system more simple and economic, consisting of a predefined beating device and a sensor able to determine, once produced the hit, the energy absorbed by the plate. After the impact being produced, the plate undergoes a deformation which absorbs part of the energy, being the reminding one transmitted to the slab and, at the same time, causing induced airborne noise in the adjoining room

Computer simulation of vapor-liquid equilibria of linear dipolar fluids: Departures from the principle of corresponding states

Liquid-vapor equilibrium of linear dipolar fluids has been determined by using the Gibbs ensemble simulation technique. Several elongations and values of the dipole moment were considered. Dipole moment increases the critical temperature and affects slightly the critical density and pressure. Compressibility factor at the critical point decreases as the dipole moment of the molecule increases. Dipole moment provokes deviations from the principle of corresponding states. It is shown that the temperature-density coexistence curve is broadened and that the slope of the vapor pressure curve increases with increasing dipole moment. We propose a new way of reducing the dipole moment so that the increase of the critical temperature becomes almost independent on the molecular elongation. We have also obtained the vapor-liquid equilibrium of models having both a dipole and a quadrupole moment. The obtained data were used to describe the behavior of some relatively complex fluids, namely, 1,1,1-trifluoroethane and 2,2,2-trifluoroethanol. Good agreement for coexistence densities and pressures was obtained. The results presented in this work for linear dipolar fluids along with previous work on linear quadrupolar fluids provide a very comprehensive view of the effect of polar forces on the vapor-liquid equilibrium of linear fluids

Effect of a physical education-based dynamic stretching program on hamstring extensibility in female high-school students

The purpose of the present study was to examine the effects of a dynamic stretching development program followed by a four-week detraining period and maintenance program on hamstring extensibility in a physical education setting. A sample of 108 female high-school students aged 16-17 years from four classes were clustered randomly and assigned to either an experimental or a control group. During physical education sessions, the experimental group students performed a dynamic stretching program twice a week for eight weeks. Subsequently, after a four-week period of detraining, the experimental group students completed a maintenance program twice a week during four weeks. The results of the two-way analysis of variance showed that the physical education-based development program significantly improved students’ hamstring extensibility (p.05), the gains obtained previously were recovered after a four-week maintenance program (p<.001). Hence, a physical education-based dynamic stretching intervention is effective in improving and maintaining hamstring extensibility among female high-school students. However, after four weeks of detraining, students’ flexibility reverts to its baseline levels. These findings could help and guide teachers to design programs that guarantee a feasible and an effective development of flexibility in a physical education setting

¿Cómo cambian los niveles de extensibilidad isquiosural de los estudiantes durante un año académico? Un estudio longitudinal

The main purpose of the present study was to examine the students’ hamstring extensibility levels through an academic year. A sample of 128 11th-grade students from a high school center was assessed by the classic sit-and-reach test in pre-, mid- and post-academic year. The results showed that students’ hamstring extensibility level statistically significantly decreased from pre-academic year (22.1 ± 8.5 cm) to mid- (19.9 ± 8.6 cm; d = -0.26) and post-academic year (18.6 ± 9.3 cm; d = -0.41) (p < 0.001) and from mid-academic year to post-academic year (d = -0.16) (p < 0.001). The results of the McNemar’s test indicated that there was a statistically significant decrease on the proportion of students with normal hamstring extensibility level from pre-academic year to post-academic year (p < 0.05). In conclusion, high-school students lost hamstring extensibility levels during an academic year. As a result of this decrease, the number of students with hamstring extensibility shortening increased by 10.9%. Physical education teachers should implement stretching programs to avoid students’ hamstring extensibility shortening.El objetivo principal del presente estudio fue examinar los niveles de extensibilidad isquiosural de los estudiantes durante un curso académico. Una muestra de 128 estudiantes de 1º de bachillerato de un centro de educación secundaria se evaluó mediante la prueba de classic sit-and-reach al comienzo, mediados y final del curso académico. Los resultados mostraron que el nivel de extensibilidad de isquiosural de los estudiantes disminuyó estadísticamente significativamente desde el comienzo (22,1 ± 8,5 cm) a mediados (19,9 ± 8,6 cm, d = -0,26) y final del año académico (18,6 ± 9,3 cm; d = -0,41) (p < 0,001), y desde mediados al final (d = -0.16) (p < 0,001). Los resultados de la prueba de McNemar indicaron que hubo una disminución estadísticamente significativa en la proporción de estudiantes con un nivel de extensibilidad isquiosural normal desde el comienzo al final del curso académico (p < 0,05). En conclusión, los estudiantes de educación secundaria perdieron niveles de extensibilidad isquiosural durante un curso académico. Como resultado de esta disminución, el número de estudiantes con acortamiento de los músculos isquiosurales aumentó un 10,9%. Los profesores de educación física deberían implementar programas de estiramiento para prevenir el acortamiento de extensibilidad isquiosural de los estudiantes.Facultad de Humanidades y Ciencias de la Educació

Truth telling and terminal patient care

En el presente escrito, abordamos la cuestión de la verdad en la relación médico- paciente, concretamente en el caso de los enfermos terminales. Analizamos los problemas y actitudes acerca de decir la verdad cuando se trata de una enfermedad mortal, concluyendo lo importante que es que haya una comunicación fluida y veraz en la relación terapéutica. Así mismo, examinamos y destacamos el papel que pueden tener los médicos generales –el médico de cabecera– en la atención a enfermos terminales en el hogar y con sus familiares y/o amigos.The aim of this text is to examine the issue of truth telling in doctor-patient relationships, namely in the case of terminal patients. We analyze the problems and attitudes regarding truth telling that there are present when patients suffer from mortal diseases. We conclude that it is very important to keep a fluent and truthful communication in the doctor-patient relationship. We also examine and stress the role that general practitioners can play in the care of terminal patients at their home and with their friends and/or relatives

Long-Term Follow-up of Intrastromal Corneal Ring Segment Implantation in Pediatric Keratoconus

Purpose: To evaluate efficacy, safety, and stability of Ferrara-type intrastromal corneal ring segment (ICRS) implantation for visual rehabilitation in pediatric patients with keratoconus. Methods: This study included patients with keratoconus aged 18 years or younger who had received Ferrara-type ICRS implantation. The uncorrected and corrected distance visual acuities, residual refractive errors, and root mean square for coma-like aberration were recorded preoperatively and at 6 months, 1, 3, and 5 years postoperatively. Results: One hundred eighteen eyes of 88 patients (mean age 16.1 ± 1.89; range 10–18) were studied. All patients were examined at a 6-month follow-up after ICRS implantation, and at the 12-, 36-, and 60-month follow-ups, 97, 71, and 23 eyes were evaluated, respectively. Mean uncorrected distance visual acuity (logarithm of minimum angle of resolution) changed from 0.67 ± 0.37 preoperatively to 0.37 ± 0.30, 6 months after ICRS implantation (P < 0.0001). Mean corrected distance visual acuity increased in turn from 0.19 ± 0.15 to 0.10 ± 0.12 (P < 0.0001). The percentage of eyes with a refractive cylinder ≤2.00 D increased from 30.5% before surgery to 70.3% 6 months later, and the root mean square for corneal coma-like aberration showed a statistically significant decrease (P < 0.001). At the follow-up visits, refractive and visual values remained stable compared with those of the 6-month visit. Conclusions: Our long-term results suggest that Ferrara-type ICRS implantation is a safe, effective, and stable procedure for restoring vision in pediatric patients with keratoconus

Overcoming the barrier of nanoparticle production by femtosecond laser ablation in liquids using simultaneous spatial and temporal focusing

There exists an increasing demand of industrial-scale production of high-purity ligand-free nanoparticles due to the continuous development of biomedicine, catalysis, and energy applications. In this contribution, a simultaneous spatial and temporal focusing (SSTF) setup is first proposed for increasing nanoparticle productivity of the eco-friendly pulsed laser ablation in liquids (PLAL) technique. In spite of the fact that femtosecond pulses have proved to achieve higher ablation rates in air than picosecond pulses, in PLAL this is reversed due to the nonlinear energy losses in the liquid. However, thanks to the incorporation of SSTF, the energy delivered to the target is increased up to 70%, which leads to a nanoparticle production increase of a 2.4 factor. This breaks a barrier toward the employment of femtosecond lasers in high-efficiency PLAL

Personas con discapacidad : de los centros ocupacionales a actitudes laborales emprendedoras = Disabled people : from occupational centers to enterprising labour attitudes

El camino hacia la plena integración sociolaboral de las personas con discapacidad en nuestro país ha experimentado avances considerables en los últimos años. Sin embargo, siguen existiendo problemas e interrogantes cuyas respuestas son aún parciales, insatisfactorias o, simplemente, inexistentes. En todo caso, la resolución de tales conflictos no es posible sin un profundo conocimiento previo de la situación en que se encuentra actualmente el tema objeto de estudio, máxime si consideramos los continuos y trepidantes cambios a los que se ve sometida la sociedad actual, en un plano general, y el sector laboral, en un plano más específico. El objetivo principal de este artículo no es sino el de facilitar, a través de la investigación empírica y algunas de las reflexiones a que dan lugar, un acercamiento al estado de la cuestión que nos ocupa, con continuas referencias a la situación concreta que afecta a Castilla y León.___________________________________The way towards the total social and labour integration of disabled people in Spain has experienced considerable advances for the last years. Nevertheless, there are several problems and questions that have been only partially answered, are unsatisfactory or, simply, non existent. In any case, the resolution of such conflicts is not possible without previous profound knowledge of the situation of the subject of study, especially if we consider the continuous and shaking changes the present society (in a general plane), and the labour sector, (in a more specific plane), are forced to face. The main target of this article to approach the actual state of the question through empirical research with special attention to the particular context of Castilla y León