Abstract: This paper describes the design of a front-end circuit consisting of an integrated preamplifier with a Sallen-Key Butterworth filter for very-high-frequency ultrasonic transducers and a ...

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The primary objective of the present paper is to link some relevant concepts on the use of ecological agricultural practices to the production of food crops. In a special topic the Trofobiose Theory, ...

Green algae production is crucial in aqua-agriculture due to its roles in wastewater treatment, CO2 absorption, and oxygen release, along with its potential for valuable product synthesis. Monitoring ...