For over a century now, radio amateurs have made tuned circuits using a coil of wire and a variable capacitor. In recent decades the supply of variable capacitors has dwindled, as SDR technology has ...

Conventional water shut-off often uses mechanical isolation or fluid gel-resin options. In restrictive simultaneous operations (SIMOPs) scenarios or adverse price environments, operators struggle to ...

Researchers have produced the first map of the world outlining the ease of fluid flow through the planet's porous surface rocks and sediments. University of British Columbia researchers have produced ...

A few months ago we brought you some experiments from [Bill Meara, N2CQR], in which he investigated the use of a glue stick as the former for a permeability tuned inductor. His set-up was very much in ...

Understanding a formulation's variable effects on its properties, especially film permeability, is key to designing a robust formulation and reducing variation of a finished product. Understanding a ...