Many asymmetric absorbers are currently based on a single-port system, where sound enters one side and is absorbed before a rigid wall. In this design, however, light and air are unable to pass ...

This latest accomplishment joins the company’s previously secured ASTM certifications, enhancing the features and expanding the end-uses for its microalgae-based bio-cement and bio-concrete. BOULDER, ...

A LARGE number of aqueous solutions of electrolytes have been investigated for frequency-, concentration- and temperature-dependence of their absorption of sound in the frequency-range 8 kc./s. to 15 ...

Science Progress commissions world authorities to contribute articles on the most interesting, important and meaningful topics - ranging from cosmology to the environment, and publishes occasional ...

With the aim of promoting more efficient ways to isolate and protect building envelopes, the Chilean team Rootman has developed Thermoroot; a biodegradable and 100% natural insulation made from roots ...

WASHINGTON, D.C., October 6, 2017 -- If you've ever lived in an apartment building or stayed in a hotel room, you are probably familiar with the inconvenience of inadequate sound absorption. Acoustic ...