X-band coaxial monopole antenna with an additional metal screen

The novel coaxial monopole antenna design with an additional metal screen is presented.The radiation char- acteristics of this antenna are investigated depending on a dis- tance between the ground Door Seal plane and additional metal screens, as well as on a size of the latter.Measured and calculated ra- diation patterns are compared within limits

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The Permotriassic branchiosaurid Tungussogyrinus Efremov, 1939 (Temnospondyli, Dissorophoidea) from Siberia restudied

The enigmatic temnospondyl amphibian Tungussogyrinus bergi Efremov, 1939 shares clear synapomorphies with other branchiosaurids indicated by an anteriorly elongated infratemporal fossa and small branchial denticles.Therefore Tungussogyrinus clearly belongs to the dissorophoid family Branchiosauridae.This species is characterized by a number of deri

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Voting on Independence and National Issues: A Historical and Comparative Study of Referendums on Self-Determination and Secession

To date there have been fifty independence referendums.Some have been official, others unofficial.Some have been successful, and others have ended in failure.This article analyses how independence referendums have Briefcase contributed to more Seat Post Ring civic engagement and how this use of the referendum can - under certain circumstances - enh

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