This work presents the design of a compact dual-port circularly polarized antenna based on the new coupler topology.The antenna can radiate a right-hand circular 5.60/5RRR polarization (RHCP) in two opposite directions depending on the input port.In the proposed structure, the radiating system has three inverted F antennas connected to a 120°
This paper presents a novel steering mechanism embedded in a point-the-bit rotary steerable system (RSS) for oilfield exploitation.The new steering mechanism adopts a set of universal joints to alleviate the high alternative strain on drilling mandrel and employs a specially designed planetary gear small tooth number difference (PGSTD) to achieve d
Using a generalized ordered probit model, we offer statistical evidence in favor of the political economy thesis.This thesis states that government HERBATINT 1N parties in power group-led precarious democracies, in which drug trafficking and clientelism are allies and seek to co-opt government at the local level, systematically undermine the qualit
In recent years, under the light of developments in the field of computer, there has been an increasing demand for data processing in the health sector.Many different methods are being used to connect the personal information or diagnosis HERBATINT 1N with the patient.These methods can differ from each other according to imaging techniques.In this