Interrelated main-sequence mass–luminosity, mass–radius, and mass–effective temperature relations

Iran and Canada Relations Main Obstacles and Bilateral Perspectives

Abstract:Despite Iran’s critical relations with USA since the Islamic Revolution in 1979, Canada had often played the role of an honest broker and maintained relations with Iran, con-trary to the US. Although the Canadian Government has not viewed the Iranian regime as democratic actor, it was interested in pursuing diplomacy for moderating the Iranian Policies too. Iran and Canada relati...

Activity Cycles in Lower Main Sequence and Post Main Sequence Stars: the Hk Project

Square-root relations between main saccadic parameters.

PURPOSE To derive and evaluate two equations in which saccade duration and peak velocity are proportional to the square root of saccade amplitude. METHODS A population of horizontal visually guided saccades in a range of amplitudes from 1.5 degrees to 30 degrees was recorded by means of electro-oculography in eight normal adult subjects. The peak velocity-amplitude data of this population wer...

Square-Root Relations Between Main Saccadic Parameters

Methods. A population of horizontal visually guided saccades in a range of amplitudes from 1.5° to 30° was recorded by means of electro-oculography in eight normal adult subjects. The peak velocity-amplitude data of this population were fitted to four models: inverse linear, exponential, power law, and square root. To approximate the duration-amplitude relation, the square root was tested again...

A Main Sequence for Quasars

1 INAF, Osservatorio Astronomico di Padova, Padua, Italy, 2 Instituto de Astronomía, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico, 3 Instituto de Astrofísica de Andalucía (CSIC), Granada, Spain, 4 Dipartimento di Fisica e Astronomia “Galileo Galilei”, Università di Padova, Padova, Italy, 5 Belgrade Astronomical Observatory, Belgrade, Serbia, 6 INAF, Osservatorio di Astrofisica e...