What's the difference between alumina and aluminum?

Alumina


Definition:

  • (n.) One of the earths, consisting of two parts of aluminium and three of oxygen, Al2O3.

Example Sentences:

  • (1) ASF-II was purified to apparent homogeneity by using concanavalin A-agarose affinity chromatography, DEAE-cellulose chromatography, alumina gel adsorption, and isoelectric focussing techniques.
  • (2) The free nucleoside IV was obtained by removal of blocking groups by sodium methoxide catalyzed deacylation, deionization under reducing atmosphere, and chromatography on neutral alumina.
  • (3) Breath was passed through a cooled loop of alumina to adsorb, concentrate, and release, on heating, pentane.
  • (4) After catecholamines are adsorbed on alumina, the amino groups not responsible for adsorption are dansylated by a solid-phase reaction.
  • (5) Subarachnoid alumina may be a good model for human arachnoiditis.
  • (6) However, ascorbic acid, a potent antioxidant, is extracted with the catecholamines onto the alumina and prevents such destruction.
  • (7) Sporulating cells of Bacillus sphaericus 9602 containing fully engulfed forespores at different stages of maturity were broken by ultrasonic disruption, followed by grinding with alumina.
  • (8) Alumina, Kieselguhr and various grades of silica gel have been tested as supports.
  • (9) From the unsaponifiable fraction (63 g) of linseed oil (25 kg), two terpenic alcohols were isolated by alumina column, thin-layer, and gas-liquid chromatography.
  • (10) The salient elements of the methods are extraction of the residues as the free amine with benzene, rapid cleanup on an alumina column, and quantification of the free amine in methanol via SPF.
  • (11) Aluminas, silicas and aluminosilicates were evaluated for their ability to sorb radiolabeled aflatoxin B1 (AFB1) from aqueous solution (in vitro).
  • (12) In the current research, the average coefficient of kinetic friction for the stainless steel couple (0.139) was less than that for the stainless steel arch wire against a polycrystalline alumina bracket (0.174).
  • (13) The method entails blender extraction of 10 g liver with ethyl acetate, column chromatography through Sephadex LH-20 and neutral alumina, and LC analysis on a C18 column with UV detection at 260 nm.
  • (14) Dry ground feed is Soxhlet extracted with hexane and passed through a 2% deactivated alumina column for initial cleanup.
  • (15) Increasing the amount of alumina proportionally increased composite strength.
  • (16) Condensation of 1,2,3,4,6-penta-O-acetyl-beta-D-galactopyranose with benzyl 2-azido-4,6-di-O-benzyl-2-deoxy-beta-D-galactopyranoside in the presence of trimethylsilyl triflate gave crystalline benzyl 2-azido-4,6-di-O-benzyl-2-deoxy-3-O-(2,3,4,6-tetra-O-acetyl-beta-D-ga lactopyranosyl)-beta-D-galactopyranoside (76%), which was converted into benzyl 2-azido-4,6-di-O-benzyl-2-deoxy-3-O-(2,6-di-O-benzyl-beta-D-galactopy ranosyl)-beta-D-galactopyranoside and condensed with 3,4,6-tri-O-acetyl-2-azido-2-deoxy-alpha-D-galactopyranosyl bromide in the presence of silver silicate on alumina and molecular sieve 4 A to give 61% of benzyl O-(3,4,6-tri-O-acetyl-2-azido-2-deoxy-beta-D-galactopyranosyl)-(1----4)- O-(2,6-di- O-benzyl-beta-D-galactopyranosyl)-(1----3)-2-azido-4,6-di-O-benzyl-2-deo xy- beta-D-galactopyranoside.
  • (17) However, these compounds were not recoverable using the alumina column method, so no comparisons between the two methods were possible.
  • (18) The cementless alumina total knee prosthesis, which uses alumina in the portions coming in contact with the bone and a combination of alumina and ultra-high molecular-weight polyethylene (UHMWPE) in the sliding portions, is referred to as a total condylar.
  • (19) In the monkey with an alumina focus in the primary motor area, proprioceptive afferents are crucial in triggering or modulating seizures.
  • (20) This study, a 4-month follow-up period of a 12-month treatment study by the present authors, was concerned with the permanent effects of treatment with diphenylhydantoin and phenobarbital in the alumina-gel monkey model.

Aluminum


Definition:

  • (n.) See Aluminium.

Example Sentences:

  • (1) A retrospective study was done in 86 patients on dialysis in order to evaluate the doses of aluminum hydroxide (OH3 Al) received to achieve a better serum phosphate control.
  • (2) These results suggest that aluminum is able to gain access to the central nervous system under normal physiological conditions.
  • (3) Marked declines in stainable bone-surface aluminum were associated with increases in bone formation rate and osteoblastic osteoid following deferoxamine.
  • (4) This is suggested by the fact that patients with overt hyperparathyroidism are protected from developing aluminum-related bone disease even when they are given large parenteral loads of aluminum.
  • (5) The 8 men and 3 women were clinically stable, were known to be compliant, and had no clinical evidence of aluminum overload; they were not receiving vitamin D supplements; and they had been on dialysis for an average of 65.6 months (range: 13-188 months).
  • (6) The neurotransmitter alterations which accompany aluminum neurofibrillary degeneration were examined in order to assess how closely they mimic those of Alzheimer's disease.
  • (7) Children with renal failure, on aluminum supplementation, should be carefully monitored for toxicity.
  • (8) From the existing data, 2 g deferoxamine administration intraperitoneally three times per week in the overnight exchange appears to provide the maximum aluminum removal for minimum deferoxamine dosage.
  • (9) After exposure to 400 microM aluminum lactate and removal of unbound aluminum, human cytoskeletal proteins were degraded two- to threefold more slowly by calpain.
  • (10) BDF1 mice were immunized with a protein antigen, such as ovalbumin (OA) or keyhole limpet hemocyanin (KLH), absorbed to aluminum hydroxide gel, and their spleen cells were stimulated by homologous antigen for the formation of glycosylation-enhancing factor (GEF).
  • (11) Chronic dietary deficiency of calcium (Ca) and magnesium (Mg) with excessive intake of aluminum (Al) and manganese (Mn) has been implicated in the pathogenesis of high incidence amyotrophic lateral sclerosis (ALS) in the Western Pacific.
  • (12) The growth plates did not increase in width despite the presence of osteomalacia and histologic evidence of extensive deposition of aluminum in bone.
  • (13) The monovalent serovar C aluminum-hydroxide-gel vaccine also gave significant protection (94%) against a serovar C challenge.
  • (14) Two different prototypes of columella materials made from aluminum oxide ceramics were newly designed by the author for ossicular reconstruction.
  • (15) The trienone XIII was subsequently epoxidised with alkaline hydrogen peroxide and m-chloroperbenzoic acid to give diepoxide XV which was reduced with aluminum amalgam to the final product V.
  • (16) To test the technique, a feasibility study was performed with known thicknesses of aluminum (simulating bone), lucite (simulating tissue), and polyethylene (simulating fat).
  • (17) The dissolution t50 and various pharmacokinetic parameters showed directly compressible starch and carboxymethylstarch to be the most effective disintegrants in the concentrations employed while magnesium aluminum silicate and microcrystalline cellulose were about equal but less effective than the previous disintegrants.
  • (18) when an aluminum plate is imaged, forms the basic Q.C.
  • (19) The effect of aluminum phosphate on the bioavailability of ranitidine has been investigated in 10 young, healthy volunteers.
  • (20) Furthermore, a Gh.PLC complex can be induced by incubation with aluminum fluoride in a detergent solution and partially purified without the dissociation of related proteins.