XXIX. On acoustic repulsion

IAU XXIX General Assembly

Body Solar system bodies are observed at many scattering angles. The reflection and polarization change withphase angle of light scattered from particulates has been studied for a century in the lab in efforts tounderstand clouds, aerosols, planetary ring systems and planetary regoliths. These effects must beunderstood in order to infer surface properties from astronomical data. The...

On Gravitational Repulsion

The concepts of negative gravitational mass and gravitational repulsion are alien to general relativity. Still, we show here that small negative fluctuations small dimples in the primordial density field that act as if they have an effective negative gravitational mass, play a dominant role in shaping our Universe. These initially tiny perturbations repel matter surrounding them, expand and gro...

Xxix. Salivary Secretion in Infants

Xxix . Detection and Estimation Theory

a. In Quarterly Progress Report No. 84 (pages 225-226) we described a state-variable formulation for the estimation and detection problem when the signal is a sample function from a nonstationary process that has passed through a dispersive medium. Work has continued in this area and we are attempting to find effective solution procedures for the equations that result. The state of current prog...

International Union of Pharmacology. XXIX. Update on endothelin receptor nomenclature.

In mammals, the endothelin (ET) family comprises three endogenous isoforms, ET-1, ET-2, and ET-3. ET-1 is the principal isoform in the human cardiovascular system and remains the most potent and long-lasting constrictor of human vessels discovered. In humans, endothelins mediate their actions via only two receptor types that have been cloned and classified as the ET(A) and ET(B) receptors in th...