Researcher with the Coordinating Group on Sociodiversity in Health at Leônidas e Maria Deane Fundação Oswaldo Cruz, Manaus Rua Teresina 476 69057-070 Adrianópolis — AM [email protected] SANTOS, F. V. dos: “Gold earrings, calico skirts”: images of women and their role in the project to civilize the Amazon, as observed by Elizabeth Agassiz in Viagem ao Brasil: 1865-1866. História, Ciências,...

Traditionally, the effect of vibration on human comfort has been evaluated using the rms value of acceleration. More recently, a widely used criteria in North America has utilized the peak value of acceleration. The differences between these two methods are examined, and the importance of making a rational selection of the appropriate motion index for future standards is emphasized. It is propo...

A PILOT'S TOLERANCE to eyeballs-down acceleration can be readily assessed from the g stress levels at which he loses vision and then consciousness. With g stress applied at right angles to the spinal axis (eyeballs in or eyeballs out), however, the cardiovascular impairment is so much less severe that there is no comparably dramatic end point to mark tolerance. A crude evaluation of tolerance t...

Recent data from our laboratory demonstrated that, when rats are raised in a hypergravity environment, the sensitivity of the vestibulo-cardiovascular reflex decreases. In a hypergravity environment, static input to the vestibular system is increased; however, because of decreased daily activity, phasic input to the vestibular system may decrease. This decrease may induce use-dependent plastici...