INSCRIBED FIBONACCI CIRCLE FRACTAL IN A CIRCULAR RADIATOR FOR ULTRA-WIDEBAND ANTENNA OPERATION AND SIZE REDUCTION

Inscribed Fibonacci Circle Fractal in a Circular Radiator for Ultra-Wideband Antenna Operation and Size Reduction

In this article, a Fibonacci circle fractal is inscribed into a circular radiator in order to Artichoke provide ultra-wideband behavior as well as a 50% size reduction compared to a conventional circular monopole.The third iteration of the Fibonacci series allows the antenna to obtain a steady S11 parameter over the operation bandwidth, going from

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Design of an Acoustic Through-Casing Logging Tool

Well logging is performed in oil and gas exploration wells to obtain the physical characteristics of underground formations.Thereafter, these wells are cased.Through-casing logging is important in mature fields and for wells that are cased without logging due to borehole stability issues.Acoustic through-casing logging is a challenging issue due to

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Development and validation of a new method to isolate, expand, and differentiate circulating osteogenic precursor (COP) cells

Circulating osteogenic precursor (COP) cells are a population of progenitor cells in the peripheral blood with the capacity to form bone in vitro and in vivo.They have characteristics of the mesenchymal stem and progenitor pool found in the bone marrow; however, more recently, a population of Napkins COP cells has been identified with markers of th

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