Optical cavities are an enabling technology of modern quantum science: From their essential role in the operation lasers to applications as flywheels atomic clocks and interaction-enhancing components optics experiments, developing a quantitative understanding mode shapes energies optical has been crucial for growth field. Nonetheless, standard treatment using paraxial quadratic fails capture i...

The genus Cyperus with five subgenus and 29 species, is the second largest genus of Cyperaceae family in flora of Iran. In this research, stem and leaf anatomy of 10 species belonging to subgenus Cyperus is investigated. The stems in transverse section of all examined species were triangular except for C. bulbosus which was subterete to polygonal. The ground tissue was spongy with numerous and ...

The new 3 generation synchrotron light sources coming up are designed for a small transverse emittance. But the small beam size gives a low Touschek lifetime and calls for good beam stability. In some storage rings higher harmonic cavities are installed for bunch lengthening to overcome the lifetime limitations. The higher harmonic cavities also induce Landau damping that improves the beam stab...

It has been suggested that a latitudinal gradient exists of a low density of snags and high density of naturally-formed tree-cavities in tropical vs. temperate forests, though few cavities may have characteristics suitable for nesting by birds. We determined snag and cavity density, characteristics, and suitability for birds in a tropical dry forest biome of western Mexico, and evaluated whethe...

Solar physicists have recently been focusing on the examination of solar cavities, circular structures appearing on the sun's upper atmosphere. The high volume of continuously received solar data from observing spacecraft make it difficult to find and identify solar cavities. In this study, we developed a computer model for automated detection of solar cavities using Haar cascade classifiers. O...