Results 231 to 240 of about 62,820 (266)
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Technetium, the missing element
European Journal of Nuclear Medicine, 1996The history of the discovery of technetium is reviewed within the framework of the discovery and production of artificial radioactivity in the twentieth century. Important elements of this history are the accidental production of this element in a cyclotron in Berkeley, California, USA, a machine devised by Ernest Orlando Lawrence, and its subsequent ...
Ernest K. J. Pauwels +1 more
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Publications of the Astronomical Society of the Pacific, 1977
Lines of Tc I have heen identified in the Me variahle T Cep. The presence of technetium in other Me variahles is discussed in view of a correlation hetween the degree of heavy-metal line enhancement in long-period variahles and the velocity displacement hetween emission and ahsorption lines.
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Lines of Tc I have heen identified in the Me variahle T Cep. The presence of technetium in other Me variahles is discussed in view of a correlation hetween the degree of heavy-metal line enhancement in long-period variahles and the velocity displacement hetween emission and ahsorption lines.
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ChemInform, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
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1975
These two metals are less well known than many other of the second- and third-row transition metals, although interest in rhenium chemistry has recently increased. Technetium, as its name suggests, is an artifically produced element, the only such among all the d transition metals.
S. A. Cotton, F. A. Hart
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These two metals are less well known than many other of the second- and third-row transition metals, although interest in rhenium chemistry has recently increased. Technetium, as its name suggests, is an artifically produced element, the only such among all the d transition metals.
S. A. Cotton, F. A. Hart
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Technetium Complexes with Triazacyclononane
Inorganic Chemistry, 2006[NBu4][TcOCl4] reacts with ethylene glycol and 1,4,7-triazacyclononane (tacn) in MeOH under the formation of the deep-blue oxotechnetium(V) cation [TcO(OC2H4O)(tacn)]+, which can readily be oxidized by air to give the stable technetium(VII) compound [TcO3(tacn)]+.
Ulrich Abram, Henrik Braband
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International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1986
The chemistry of the technetium-sulfur colloid produced by the reaction of sodium thiosulfate with acid was investigated. A commercial kit was duplicated, and analyses of elemental sulfur, bisulfite and residual thiosulfate were carried out. The colloidal dispersions were filtered through Nuclepore graded membranes, and the percentages of sulfur and of
Joseph Steigman +2 more
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The chemistry of the technetium-sulfur colloid produced by the reaction of sodium thiosulfate with acid was investigated. A commercial kit was duplicated, and analyses of elemental sulfur, bisulfite and residual thiosulfate were carried out. The colloidal dispersions were filtered through Nuclepore graded membranes, and the percentages of sulfur and of
Joseph Steigman +2 more
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Seminars in Nuclear Medicine, 1974
The detection of a number of impurities in 99m Tc effluents from 99 Mo generators is important for proper use of the generator systems. Their identification is described in this review. Technetium in sulfur colloid is probably present as Tc 2 S 7 .
P. Richards, J. Steigman
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The detection of a number of impurities in 99m Tc effluents from 99 Mo generators is important for proper use of the generator systems. Their identification is described in this review. Technetium in sulfur colloid is probably present as Tc 2 S 7 .
P. Richards, J. Steigman
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Manganese, Technetium and Rhenium
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
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Journal of Nuclear Cardiology, 2010 ChemInform Abstract: Heat Capacities of Technetium Metal and Technetium—Ruthenium Alloy.
ChemInform, 2002AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Kazuo Minato, Yoshiro Shirasu
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