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 (Nb) [ni-o´be-um]
a chemical element, atomic number 1, atomic weight 92.906. (See Appendix 6.)
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ni·o·bi·um (Nb),

A rare metallic element, atomic no. 41, atomic wt. 92.90638, usually found with tantalum.
[Niobe, daughter of Tantalus]
Farlex Partner Medical Dictionary © Farlex 2012


A rare metallic element; atomic no. 41, atomic wt. 92.90638; usually found with tantalum.
[Niobe, daughter of Tantalus in Greek mythology]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
He warned that the sedimentary rock from the hill should not be used for either building homes or road constructions.KAYA FORESTThat was the place that Cortec said it had "discovered" niobium or rather it wanted to prospect for minerals.
The chromatograms and their quantitative data for the 1.0 [micro]L injections of the transesterification reactions of soybean oil using Nb[Cl.sub.5] and the different synthesized niobium pentoxide catalysts (amorphous [Nb.sub.2][O.sub.5], SG400, SG500, SG600, SG700, SG800) are shown in the SI Figure S3 to S10.
As reported, the presence of niobium stabilizes the catalyst structure against oxidation and reduction and permits a very strongly oxidized or reduced catalyst to return more readily to its original state [1].
As can be seen in Figure 2, the samples obtained at the lower conditions, at 40[degrees]C and with NaOH concentration of 0.25 M, presented only the characteristic peaks of niobium, independently of the reaction duration.
Technavio's report, Global Niobium Market 2016-2020, has been prepared based on an in-depth market analysis with inputs from industry experts.
The formation and solvent extraction of new ion-association complexes between anionic- chelates of niobium (V) with nitroderi-vatives of catechol {3,5-dinitrocatechol and 4-nitrocatechol} and tetrazoliumcations {2,3,5-triphenyl-2H-tetra- zolium and 3,3'-[3,3'-dimetoxy (1,1'-biphenyl)-4,4'-diyl]-bis[2,5-diphenyl-2H-tetrazolium]} were studied [3].
To increase the purity of niobium, ULVAC optimized multiple conditions, including the selection of raw materials, the degree of vacuum, and melting speed by using a 600 kW EB melting furnace that was newly constructed at our group company ULVAC Tohoku, Inc.
Niobium is a fairly abundant and widely used material, Mirvakili says, so the whole system should be inexpensive and easy to produce.
One such substance is the material used the new magnet HQ02a 6 a compound called niobium tin.
Solikamsk Magnesium Plant (SMP) produces a unique set of products including magnesium, titanium sponge, niobium, tantalum and REE carbonates.