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gallium
gallium
gallium (symbol Ga) Grey metallic element of group III of the periodic table. It was discovered in 1875. Chief sources are bauxite and some zinc ores. The metal is used in lasers, semiconductors, and high-temperature thermometers. Properties: at.no. 31; r.a.m. 69.72; r.d. 5.9; m.p. 29.78°C (85.60°F); b.p. 2403°C (4357°F); most common isotope Ga
69 (60.4%).
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 "Albany Times Union (Albany, NY)")
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GALLIUM ARSENIDE SPEEDS WORK OF SEMICONDUCTORS.(Living)
Newspaper article from: Albany Times Union (Albany, NY); 9/18/1990; 700+ words
; ...electronic and light signals - by using gallium arsenide instead of silicon. However...daunting challenge. "The joke goes that gallium arsenide always has been the material...frustration of scientists working to solve the gallium arsenide puzzle may finally come to an...
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The role of the gallium scan in primary extranodal lymphoma
Magazine article from: The Journal of Nuclear Medicine; 1/1/1998; ; 700+ words
; ...was to examine the factors influencing gallium scan positivity for patients with primary...lymphoma and to examine the role of the gallium scan in staging the disease and assessing...patients with extranodal lymphoma who had a gallium scan were reviewed. The influences of...
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Uptake of gallium-67 in transfected cells and tumors absent or enriched in the transferrin receptor
Magazine article from: The Journal of Nuclear Medicine; 8/1/1998; ; 700+ words
; Gallium-67 has been a controversial tumor-imaging...controversy centers on why tumors are variable in gallium-avidity, whether 67Ga uptake is a transferrinindependent...67Ga, both as a citrate salt and as a gallium-transferrin complex, was examined in...
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North Carolina Inventors Develop Gallium Nitride Semiconductor Layer Fabrication Method
News Wire article from: US Fed News Service, Including US State News; 5/21/2007; 700+ words
; ...developed a method of fabricating a gallium nitride semiconductor layer. According...Trademark Office: "More specifically, gallium nitride semiconductor layers may be fabricated by etching an underlying gallium nitride layer on a sapphire substrate...
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Recovery of gallium from Bayer liquor using ion exchange technique - a case study
Magazine article from: Minerals & Metallurgical Processing; 2/1/2006; ; 700+ words
; Abstract Gallium adsorption studies were carried out using synthesized hydroxamic...establish the suitable conditions for the preferential extraction of gallium. The kinetics of gallium adsorption was found to be higher than vanadium. Using the data...
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Gallium Nitride 'Biggest Success Story' in Compound Semiconductors
Newspaper article from: Wireless News; 3/28/2005; 466 words
; Wireless News 03-28-2005 Gallium Nitride 'Biggest Success Story...WIRELESS NEWS-March 30, 2005-Gallium Nitride 'Biggest Success Story...http:// www.10meters.com Gallium nitride technology -- having achieved...
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Silicon Germanium Challenges Gallium Arsenide in Electronics.(International Business Machines Corp.)(Brief Article)(Product Announcement)
Magazine article from: Chemical Market Reporter; 7/9/2001; ; 700+ words
; ...competing manufacturing technologies such as gallium arsenide. "Silicon germanium's advantage...Silicon germanium has the potential to supplant gallium arsenide, but...the market for gallium arsenide is more mature than the silicon germanium...
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Gallium Announces New Software Package for Systems Integrators Bidding on Defense and ATM Programs.
Business Wire; 5/1/2000; 700+ words
; ...Build HCI Prototypes for Program Bids Gallium today announced the second package in...helping to ensure project success. Gallium's InterMAPhics product family is an...awarded," said Jack Prior, President of Gallium. "The Star Partners Industry Pack gives...
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Processing to obtain high-purity gallium
Magazine article from: JOM; 3/1/2003; ; 700+ words
; Overview Gallium has become increasingly popular as a substrate...electronic devices. Aside from ore, gallium can be obtained from such industrial sources...electrolytic process, zinc refinery residues, gallium scrap materials, and coal fly ash. The...
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Move over silicon, here comes gallium arsenide Military technology has rocketed into consumer mainstream, big profits
Newspaper article from: The Boston Globe; 12/23/1998; ; 700+ words
; ...charges, the answer lies in the chips. The gallium arsenide chip, that is. The wild popularity of the cellular phone has propelled gallium arsenide technology from the niche military...Massachusetts has emerged as one of the leaders in gallium arsenide semiconductor production, with...
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Gallium Scan of the Body
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed.
Gallium Scan of the Body Definition A gallium scan of the body is a nuclear medicine test that is conducted using a camera that detects gallium, a form of radionuclide, or radioactive chemical substance...
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Gallium Scan
Encyclopedia entry from: Gale Encyclopedia of Cancer
Gallium scan Definition A gallium scan of the body is a nuclear medicine test that is conducted using a camera that detects gallium, a form of radionuclide, or radioactive chemical substance. Purpose...
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Gallium Nitrate
Encyclopedia entry from: Gale Encyclopedia of Cancer
Gallium nitrate Definition Gallium nitrate is a drug that is used to treat hyper-calcemia , or too...condition may occur when individuals develop various types of cancer. Gallium nitrate is also known by the common brand name Ganite. Purpose...
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Gallium (revised)
Book article from: Chemical Elements: From Carbon to Krypton
GALLIUM (REVISED) Note: This article, originally...Boisbaudran in 1875. Until recently, gallium had few applications. Then, some of its...exposed to light. These properties make gallium an important and essential element in many...
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gallium
Book article from: The Columbia Encyclopedia, Sixth Edition
gallium , metallic chemical element; symbol Ga...liquid); valence +2 or +3. Solid gallium is a blue-gray metal with orthorhombic...has a beautiful silver color. Although gallium is solid at normal room temperatures...
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