objective: the effects of natural adjuvants were examined on total and differential wbc counts in lung lavage of sensitized guinea pigs. materials and methods: in three sensitized groups of guinea pigs including: untreated sensitized animals (s), sensitized animals treated with adjuvant g2 (s+g2) and g2f (s+g2f) as well as non-sensitized group (c) (n=6 for each group), total and differential wb...

Rare Earth (RE) phosphors waste contains valuable rare elements (REEs), such as cerium, terbium, yttrium, and europium. In industry, the process of NaOH roasting followed by acid leaching is usually used to extract REEs from in China. Using this process, efficiencies cerium terbium are clearly lower than those other REEs, which results uneven extraction low total REE efficiency. The key reason ...

A novel surfactant-encapsulated terbium-substituted heteropolyoxotungstate complex [L1]13[Tb(SiW11O39)2].30H2O (SEC-1) bearing mesomorphous groups was successfully prepared by the ionic self-assembling route, exhibiting characteristic thermotropic liquid-crystalline behavior.

This paper reports the mechanoluminescence (ML) induced by impulsive excitation of γ irradiated terbium doped KCl single crystals and powder. The KCl crystals having different concentrations of terbium were prepared by melt technique (slow cooling).The crystals of small sizes were cleaved from grown crystal block and crushed to obtain powder or microcrystalline powder. The annealed samples were...

Small lanthanide clusters have interesting magnetic properties, but their structures are unknown. We have identified the structures of small terbium cluster cations Tb(n)(+) (n = 5-9) in the gas phase by analysis of their vibrational spectra. The spectra have been measured via IR multiple photon dissociation of their complexes with Ar atoms in the 50-250 cm(-1) range with an infrared free elect...

A compact all-fiber Faraday isolator and a Faraday mirror are demonstrated. At the core of each of these components is an all-fiber Faraday rotator made of a 4-cm-long, 65-wt%-terbium-doped silicate fiber. The effective Verdet constant of the terbium-doped fiber is measured to be -32 rad/(Tm), which is 27 x larger than that of silica fiber. This effective Verdet constant is the largest value me...

Electron paramagnet ic resonance spectra of tetravalent terbium ions have been observed in host crystals of Z r S i 0 4 , H f S i 0 4 , T h S i 0 4 , T h G e 0 4 (zircon structure) and Z r G e 0 4 , H f G e 0 4 (scheelite structure) at X band and Q band and various temperatures. The spin Hamiltonian parameters have been determined from the rotat ional diagrams; the zero field splittings turned ...

A simple, rapid and sensitive spectrofluorimetric method for the determination of fluoroquinolone antibiotics, norfloxacin (NOR), ciprofloxacin (CIP) and pefloxacin (PEF) is described. The method is based on the radiative energy transfer from fluoroquinolones to terbium ions (Tb3+) in the presence of tri-n-octylphosphine oxide (TOPO) in weakly acidic (pH 5.5) micellar solution of cetylpyridiniu...