[1] The dependence of the northern winter aurora on interplanetary parameters is examined for images obtained from the Polar spacecraft Ultraviolet Imager (UVI) during the month of January 1997. Linear correlation analysis is used to relate auroral brightness to interplanetary parameters as a function of magnetic latitude (MLAT) and magnetic local time (MLT). Spatial maps of maximum magnitude c...

The reduction of UVI uranyl halides or amides with simple LnII or UIII salts forms highly symmetric, linear, oxo-bridged trinuclear UV /LnIII /UV , LnIII /UIV /LnIII , and UIV /UIV /UIV complexes or linear LnIII /UV polymers depending on the stoichiometry and solvent. The reactions can be tuned to give the products of one- or two-electron uranyl reduction. The reactivity and magnetism of these ...

Relativistic zero order regular approximation (ZORA) density functional theory computations, coupled with the conductor-like screening model for solvation effects, are used to investigate redox properties of a series biscyclopentadienyl pentavalent uranium(V) complexes Cp2U(═N–Ar)X (Ar = 2,6-Me2-C6H3; X OTf, C6F5, SPh, C═CPh, NPh2, Ph, Me, OPh, N(TMS)2, N═CPh2). Regarding UV/UIV and UVI/UV coup...

We present new results of our studies zonal and meridional winds in both hemispheres Venus, using ground- space-based coordinated observations. The obtained from telescope observations were retrieved with a Doppler velocimetry method. wind velocities space used an improved cloud-tracked technique based on the phase correlation between images. evidence that altitude level sensed by method is app...

The ultraviolet (UV) region of electromagnetic radiation from sun occupies a section of wavelengths ranging from 400 to 10 nm. It is highly ionizing and activates many chemical processes on different types of materials and living beings. As a function of its effects on the biosphere, the UV radiation regions are arbitrarily called UV-A, UV-B and UV-C. A global scale called Solar Ultra Violet In...

Iturbide is in the northeast of Mexico and has a rich native exotic flora; however, there are no ethnobotanical records, therefore, it requires attention documentation traditional knowledge practices its botanical resources. In 2021, twelve field trips were carried out, applying 110 semi-structured interviews. Plant samples collected, identified deposited an herbarium. We used Chi-square test t...