Sharing space with 34 million dead insects

One million insects--a lot of parasites?

Dead space: simplicity to complexity.

CONSIDERABLE UNCERTAINTY existed regarding the magnitude of pulmonary dead space in the immediate post-World War II era. The dead space concept was originated by Bohr (2), who viewed total ventilation as composed of two distinct, but homogeneous, components—alveolar ventilation that participated fully in gas exchange and dead space ventilation in which no respiratory exchange occurred. With kno...

Effects of alveolar dead-space, shunt and V/Q distribution on respiratory dead-space measurements.

BACKGROUND Respiratory dead-space is often increased in lung disease. This study evaluates the effects of increased alveolar dead-space (Vd(alv)), pulmonary shunt, and abnormal ventilation perfusion ratio (/) distributions on dead-space and alveolar partial pressure of carbon dioxide (Pa(co(2))) calculated by various methods, assesses a recently published non-invasive method (Koulouris method) ...

Correction for mechanical dead space in the calculation of physiological dead space.

When physiological dead space (Vd(p)) is calculated for a patient who has alveolar dead space, e.g., after pulmonary vascular occlusion, less than the full volume of attached mechanical dead space (Vd(m)) appears in the measured dead space (Vd(n)). Under these conditions the traditional subtraction of Vd(m) from Vd(n) leads to underestimation of Vd(p) and can give a falsely small ratio of Vd(p)...

Space Efficient Secret Sharing

A k-out-of-n secret sharing scheme conventionally encodes a single secret s in n shares such that any k of them can be used to reconstruct the secret (Shamir’s scheme [1]). However, Shamir’s scheme is not space efficient because it leads to a n-fold increase in total storage requirement. Some efforts have been made to create space efficient schemes [5, 6] under certain restrictions, but most ot...