A inteligibilidade da palavra em igrejas católicas, através de análises de carácter objectivo e subjectivo
Lencastre, Margarida Maria Mendes de Freitas de Queiroz e
1988-01-01
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The development and proliferation of new information and communication technologies has generated some profound claims about the erasure of place. Whilst these claims have continued political and policy resonance, they are increasingly challenged in sociological debate, which emphasizes the persistence of the local. Following this lead, our article explores relations between technology and place. We develop our understanding through engagement with Science and Technology Studies, Actor Network Theory and geographical conceptualizations of place. Our argument is worked through a new empirical study of telemedicine, where new technologies are applied precisely to overcome place. Our analysis is that, on the contrary, empirical outcomes are legible only through the lens of place. This has important policy implications and broader implicat...
The relative accuracy of temperature and strain determination using Brillouin frequency shift and power change in standard single-mode fibre and the frequency shifts of the two Brillouin peaks in large effective area fibre is reported.
Chemical vapour deposition (CVD) is a widely used method in the optoelectronics and semiconductor industries to produce high purity thin film, in crystalline, amorphous and epitaxial phases. A wide variety of materials can be produced in this way although for the most part use of the technique has focussed on polysilicon, silicon dioxide, silicon nitride and metallic materials. The advantages however of CVD processing, which offers offer superior quality compared to conventional methods such as sputtering or co-evaporation, include conformality, coverage, and stoichiometry control. The process should also be more economical and scalable to large substrates as can take place at atmospheric pressure rather than under vacuum conditions
Background: the level of environmental hypobaric hypoxia that affects climbers at the summit of Mount Everest (8848 m [29,029 ft]) is close to the limit of tolerance by humans. We performed direct field measurements of arterial blood gases in climbers breathing ambient air on Mount Everest.
Methods: we obtained samples of arterial blood from 10 climbers during their ascent to and descent from the summit of Mount Everest. The partial pressures of arterial oxygen (PaO2) and carbon dioxide (PaCO2), pH, and hemoglobin and lactate concentrations were measured. The arterial oxygen saturation (SaO2), bicarbonate concentration, base excess, and alveolar–arterial oxygen difference were calculated.
Results: PaO2 fell with increasing altitude, whereas SaO2 was relatively stable. The hemoglobin concentration increased such that the oxygen cont...
