Abstract: Photovoltaic generation is rapidly expanding, especially in small-scale residential and commercial installations, also known as distributed photovoltaic generation. An important aspect of ...

When we think of rivers, we imagine them flowing from mountains to seas, driven by gravity. But in rare and fascinating cases, rivers can reverse their flow, either temporarily or permanently. This ...

Abstract: This paper represents the results obtained with a preliminary numerical methodology adopted to reduce noise in axial piston pumps. Starting from a preliminary design (further called “Valve ...

This story was supported by the Pulitzer Center. It is part of a project on reverse migration by Arizona Republic reporter Daniel Gonzalez and El Paso Times visual journalist Omar Ornelas. CIUDAD ...