La normativa del derecho musulmán acerca de los castillos y ‎fortalezas en al-Andalus

El objetivo de este estudio es rastrear lo que los textos jurídicos mālikíes occidentales han dejado escrito acerca de las fortalezas y de los castillos, en especial cuando se refieren a los castillos y las murallas urbanas de las ciudades andalusíes. En el análisis se diferencian los diversos tipos de textos jurídicos, puesto que la normativa general se ha de separar de las cuestiones emanadas del derecho positivo. De este modo, de la relación entre el derecho musulmán y los que en otro lugar llamamos “espacios de control y defensa”, se podrán extraer conclusiones sobre el ámbito público y militar, así como sobre la vida cotidiana de las gentes que vivieron cerca o dentro de ellos.

Spontaneous Abortions and Shift Work in a Cohort of Nurses in Norway

Background: An association between spontaneous abortions and shift work has been suggested, but present research results are conflicting. The aim of the study is to evaluate the relationship between spontaneous abortions among nurses, shift schedules, and nights worked. Methods: This is a longitudinal study where we identified 914 females from a cohort of nurses in Norway who had worked the same type of shift schedule 2008-2010; either permanent day shift, three-shift rotation or permanent night shift. Information on age, work and life-style factors, as well as spontaneous abortions during lifetime and the past three years (2008-2010) was obtained by annual questionnaires. Results: A higher prevalence of experienced spontaneous abortions before study start (2008) was found among nurses working permanent night shift compared to other nurses. In a linear regression analysis, a risk of 1.3 was found for experienced spontaneous abortions before study start among permanent night shift nurses, with day shift as reference, when adjusting for age, smoking, caffeine and job strain, but the finding was not statistical significant (95 per cent confidence interval 0.8-2.1). Permanent night shift workers had a risk of 1.5 experiencing spontaneous abortions in 2008-2010 compared to day shift nurses, although not statistical significant (95 per cent confidence interval 0.7-3.5). The number of night shifts the past three years was not associated with experiencing spontaneous abortions 2008-2010, but associated with a reduced risk of experiencing spontaneous abortions during lifetime. The results must be interpreted in the light of a possible selection bias; both selections into the occupation of nursing and into the different shift types of the more healthy persons may have occurred in this population. Conclusion: No significant increased risk of spontaneous abortion among permanent night shift nurses compared to day-time nurses was found in this study, and no association was found between spontaneous abortions and the number of worked night shifts.