Cataloque of selenocentric referense obgects (CSRO): database

This database provides a global selenocentric catalogue containing 272 931 coordinates of selenocentric positions reference objects. The selenocentric coordinate network was made in a dynamic system of coordinates. In catalogue are given rectangular coordinates and radius - vector craters. The catalog is intended for undergraduate and graduate students of all disciplines studying the celestial mechanics and astrometry. It will be useful to teachers and researchers interested in issues the navigational orientation on the lunar surface to

Cataloque of selenocentric referense obgects (CSRO): database

This database provides a global selenocentric catalogue containing 272 931 coordinates of selenocentric positions reference objects. The selenocentric coordinate network was made in a dynamic system of coordinates. In catalogue are given rectangular coordinates and radius - vector craters. The catalog is intended for undergraduate and graduate students of all disciplines studying the celestial mechanics and astrometry. It will be useful to teachers and researchers interested in issues the navigational orientation on the lunar surface to

Photoluminescent porous aerogel monoliths containing ZnEu-complex: the first example of aerogel modified with a heteronuclear metal complex

A procedure for the chemical immobilization of a new ZnII–EuIII heterobimetallic complex in the SiO2 aerogel matrix has been developed. In this Zn–Eu complex, a peripheral non-luminescent Zn ion acts as a binder to a silica matrix and prevents direct interaction of rare-earth ions with OH− and NH− groups in the silica matrix, which would have a detrimental effect on the luminescence of lanthanides. The procedure includes the synthesis of complexes, co-gelation of the obtained complex with SiO2 sol, the washing of lyogels, and their subsequent supercritical drying in CO2. The composition and properties of the obtained aerogels were investigated using a low-temperature nitrogen adsorption technique, helium pycnometry, FTIR, Raman, UV–visible, and luminescence spectroscopy, XPS, PXRD, SEM, TEM, TGA combined with mass spectrometry, and small-angle neutron scattering. The aerogels modified with the ZnII–EuIII complex demonstrated strong red luminescence upon excitation with UV light