It may not be the radio station with all the hits and the best afternoon drive show, but 1420.4058 MHz is the most popular frequency in the universe. That’s the electromagnetic spectral line of ...

Researchers in Germany have just unveiled a textile-based cascade filter designed to capture microplastics directly from wastewater before they can spread into rivers and oceans. Developed by a team ...

For the higher-order 11R filter design, use of a cascade transfer function is preferred. The factored forms for the lowpass prototype transfer functions for Butterworth and Chebyshev filters are given ...

Microplastics are now found almost everywhere, even in remote regions of Antarctica. They enter the human body through the food chain. Studies indicate that microplastics may have negative effects on ...

Until recently, audio systems have largely been analog. Now the trend is moving rapidly to digital implementations. While the literature contains most of the information needed to design and implement ...

A textile cascade filter can filter out up to 98.5 percent of microplastics in wastewater from washing processes. It could also be used additionally. The German Institute for Textile and Fiber ...