The work is devoted to the study of physicochemical and surface-active properties N-(benzoyl)-N'-(phenylsulfonyl)hydrazine (BPSH) assess possibility using reagent in processes concentration non-ferrous metal ions. solubility ethanol, 0.1 mol/l KOH solution, toluene, chloroform, hexane was studied by spectrophotometry, refractometry, gravimetry. Acid-base equilibria solutions hydrolytic stabilit...

It is challenging or infeasible to precisely measure the mass of small asteroids using state-of-the-art without a dedicated spacecraft rendezvous mission, which are typically limited one few asteroid targets. Alternatively, flyby missions offer possibility visiting multiple but lack sensitivity for all largest asteroids. In these encounters, Earth-based two-way Doppler used change in spacecraft...