Promising review: "I wasn't sure what to expect when purchasing these, but now they are a staple in every room of our house. Within three days the air smelled more crisp and was easier to breathe in ...

Abstract: The paper presents methods for improving the energy efficiency of fan systems using elements installed at the inlet of the suction pipe, in order to smoothly reduce the air flow to the ...

Abstract: Air lifting artificial upwelling is an important field of the artificial upwelling which brings the nutrient-rich deep sea water up to the surface and improves marine productivity via the ...