(n.) A native sulphide of copper, occuring in masses of a dark blue color; -- hence called indigo copper.
Example Sentences:
(1) Optimum conditions for the oxidation of chalcocite were: pH, 1.7 to 2.3; temperature, 35 C; and ferric iron concentration in the range of 0.004 to 0.01 M. For covellite, the optimum conditions were: pH 2.3; temperature, 35 C; and ferric iron concentration in the range of 0.004 to 0.02 M. The energies of activation were determined to be 16.3 kcal (ca.
(2) Biodegradation of chalcocite was found to be 90 to 100% and that of covellite 45 to 60%.
(3) "Oxygraph" apparatus was used to measure quantitatively the kinetics of oxidation of synthetic covellite (CuS) in the presence and absence of Thiobacillus species.
(4) In contrast, all Cu X-ray photoelectron signals of the more tentatively described mixed valence complexes Na2Cu3S3 and the mineral covellite, CuI4CuII2(S2)2S2, could be attributed exclusively to Cu(I).
(5) 4.8 X 10(4) J) per mol for chalcocite and covellite, respectively.
(6) The microbiological oxidation of synthetic chalcocite and covellite has been investigated using an adapted strain of Thiobacillus ferrooxidans.
Indigo
Definition:
(n.) A kind of deep blue, one of the seven prismatic colors.
(n.) A blue dyestuff obtained from several plants belonging to very different genera and orders; as, the woad, Isatis tinctoria, Indigofera tinctoria, I. Anil, Nereum tinctorium, etc. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican.
(a.) Having the color of, pertaining to, or derived from, indigo.
Example Sentences:
(1) Mood Indigo (18 July) Arguably the most French movie ever made, Romain Duris and Audrey Tautou are quite adorable as fairy tale lovers in Michel Gondry's adaptation of Boris Vian's Froth on the Daydream.
(2) Among the latter, there were sensitizations, to our knowledge hitherto unreported in the literature: to indigo carmine (2 cases), monensin sodium (1 case), thiabendazole (1 case), methylchlorpindol (1 case) and amprolium hydrochloride (1 case).
(3) Over a crest in the road was the cause of the electronic silence: the National Radio Astronomy Observatory (NRAO), an array of radio telescopes set against the indigo vastness of the Blue Ridge Mountains.
(4) The enzymatic activity was revealed by reddish-brown, purple red, and indigo-blue cytoplasmic precipitate, using the substrates alpha-naphthyl-acetate, naphthol-AS acetate and 5-bromo-4-chloro-indoxyl acetate respectively.
(5) We conclude that avoiding of xylene, and mounting of the preparates in Histoclear (a xylene substitute) and Canada balsam (instead of synthetic resin mountants) yields a sharp and stable indigo precipitate.
(6) The plantations of the Carolina Low Country produced rice, indigo and cotton.
(7) Synthetic indigo, indirubin and isatin were tested for TCDD receptor affinity in competition experiments in vitro.
(8) When injected with indigo carmine, the vessels localized by the hydrogen-induced current impulses filled the entire anterior spinal artery from the low thoracic to the sacral region, whereas injection of the other vessels did not show filling.
(9) beta-galactosidase, revealed by an indigo blue reaction product, represents a valid tracer in immunohistochemistry.
(10) Chromosomal aberrations induced by indigo carmine (secondary amine-containing dye), fast green FCF (tertiary amine-containing dye) and sodium nitrite, singly and in combination, were studied in mice after prolonged feeding in the diet.
(11) Following aspirate cytology, the lesion was localized with indigo carmine and Kopans' wire and every patient underwent a standard open excisional biopsy.
(12) Observations on the instability of the indigo precipitate led us to investigate this phenomenon.
(13) Synthetic indigo of technical grade or 98% pure showed mutagenic effects, especially on TA98 + S9.
(14) A trichrome staining technique using safranin-indigo-picrocarmine (SIPC) can be used to distinguish the various stages of the cell cycle in onion root tip.
(15) He was hooked the moment he heard Mood Indigo on his grandparents' wireless set at the age of five: "Something about it made my ears tingle."
(16) A central region of 2.9 kbp complemented an xylA (for xylene oxygenase) mutant of Pseudomonas putida mt-2 and was also capable of conferring the ability to convert indole to indigo on strains of Escherichia coli and P. putida.
(17) No hemodynamic instability occurred during the operation until the patient was administered intravenous (IV) indigo carmine 5 ml.
(18) Until further studies defining the mechanism for its hypertensive side effect are performed, indigo carmine should be used with caution in patients with severe cardiac dysfunction.
(19) Later, at Burberry , models walked the catwalk in buttoned-up indigo jackets and matching jeans.
(20) However, indigo showed a high (Kd = 1.9 nM) affinity for the Ah or TCDD receptor.