ETIMOLOGIA DELLA PAROLA TECHNETIUM
New Latin, from Greek tekhnētos manmade, from tekhnasthai to devise artificially, from tekhnē skill.
CHE SIGNIFICA TECHNETIUM IN INGLESE
Il tecnezio
Technetium è l'elemento chimico con numero atomico 43 e il simbolo Tc. È l'elemento di numero atomico più basso senza isotopi stabili; Ogni sua forma è radioattiva. Quasi tutto il tecnezio viene prodotto sinteticamente, e solo piccole quantità si trovano nella natura. Il tecnezio naturalmente si verifica come un prodotto di fissione spontaneo in minerale di uranio o mediante cattura di neutroni in ore di molibdeno. Le proprietà chimiche di questo metallo di transizione grigio argentato e cristallino sono intermedie tra rinenium e manganese. Molte delle proprietà del tecnezio erano state predisposte da Dmitri Mendeleev prima che l'elemento venisse scoperto. Mendeleev notato un vuoto nella sua tavola periodica e ha dato l'elemento scoperto il nome provvisorio ekamanganese. Nel 1937, il tecnezio divenne il primo elemento prevalentemente artificiale da produrre, dunque il suo nome. Il suo isomero-tecnetium nucleare-99m di breve durata radiotrasmittente è utilizzato nella medicina nucleare per una vasta gamma di prove diagnostiche. Technetium-99 è usato come una sorgente senza raggi gamma di particelle beta.
definizione di technetium nel dizionario inglese
La definizione di tecnezio nel dizionario è un elemento metallico grigio-argenteo, prodotto artificialmente dal bombardamento del molibdeno dai deuteroni: usato per inibire la corrosione dell'acciaio. Il radioisotopo tecnezio-99m, con un'emivita di sei ore, viene utilizzato in radioterapia. Simbolo: Tc; numero atomico: 43; emivita dell'isotopo più stabile, 97Tc: 2,6 × 106 anni; valenza: 0, 2, 4, 5, 6 o 7; densità relativa: 11.50; punto di fusione: 2204 ° C; punto di ebollizione: 4265 ° C.
PAROLE IN INGLESE ASSOCIATE CON «TECHNETIUM»
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10 LIBRI IN INGLESE ASSOCIATI CON «TECHNETIUM»
Scopri l'uso di
technetium nella seguente selezione bibliografica. Libri associati con
technetium e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Technetium: Chemistry and Radiopharmaceutical Applications
Klaus Schwochau Technetium Chemistry and Radiopharmaceutical Applications This unique handbook provides a comprehensive survey of the present status of Technetium chemistry and its radiopharmaceutical applications.
2
Technetium-99m Pharmaceuticals: Preparation and Quality ...
Radioactive drug development is a multi-disciplinary task, therefore, in a concerted effort, dedicated scientists and experts from different fields of specialisation have contributed to this book.
3
The Cleveland Clinic Cardiology Board Review
SPECT Perfusion Agents The most commonly used SPECT tracers of myocardial
perfusion are thallium-201, technetium-99m sestamibi, and technetium-99m
tetrofosmin. Thallium-201 Thallium-201 is a cationic, metallic element that is ...
Brian P. Griffin, Curtis M. Rimmerman, Eric J. Topol,
2006
4
Chemical thermodynamics of
technetium
This volume in the series Chemical Thermodynamics provides a comprehensive review and critical evaluation of experimental data available for the chemical thermodynamics of inorganic compounds and aqueous species and complexes of technetium.
Joseph A. Rard, M. C. Amaia Sandino, Erik Östhols,
1999
By virtue of extensive development and testing by the manufacturer, they permit
radiopharmacists to conduct a series of chemical modifications of technetium
within the hospital environment, reliably and in high yield. Complex chemical ...
6
Radioguided Surgery: A Comprehensive Team Approach
Technetium-99m-antimony colloid, nanocolloid, and colloidal sulphur are the
most widely used agents (the radiopharmaceutical varies in different countries,
depending on drug approval). Technetium-99m-nano- colloid is the predominant
...
Giuliano Mariani, Armando E. Giuliano, H. William Strauss,
2010
7
General Chemistry, Enhanced Edition
FIGURE 20.14 A technetium-99m generator Left: A conceptual view of the
generator. Molybdenum-99, in the form of MoO42 ion adsorbed on alumina,
decays to technetium-99m. The technetium is leached from the generator with a
salt ...
Darrell Ebbing, Steven D. Gammon,
2010
8
Clinical Nuclear Medicine
In recent years Re-188 has gained a lot of attention because of its chemical
similarity to technetium and the on-demand availability through the W-188/Re-
188 generator system.Therapytrialsemploying -emitting nuclides are rare
compared to ...
Hans-Jürgen Biersack, Leonard M. Freeman,
2008
9
Bioinorganic Chemistry: A Short Course
(Adapted from references 88 and 89.) moments. Technetium has no stable
isotopes; but one of its metastable isotopes, 99mTc or technetium-99m, has been
a mainstay of diagnostic nuclear medicine since the 1970s.86 In some chemical
form, ...
Rosette M. Roat-Malone,
2003
10
Textbook of Small Animal Surgery
In normal animals, technetium pertechnetate is transported through the portal
system to the liver. In animals with shunting of portal blood, a greater percentage
of technetium is rapidly carried to the heart (Fig. 45-9). Time- activity curves for
the ...
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «TECHNETIUM»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
technetium nel contesto delle seguenti notizie.
Lab confirms new commercial method for producing medical isotope
... fission products that include Mo-99, which is the parent isotope of technetium-99m (Tc-99m), the most widely used radioisotope in medical diagnostic imaging. «Phys.Org, giu 15»
North America Nuclear Imaging Market 2015 - Growth, Trends And …
Market is segmented into two major segments SPECT (Technetium-99m (TC-99m), Thallium-201 (TL-201), Iodine (I-123) and others) and PET (Fluorine-18, ... «PR Newswire, giu 15»
Technetium-99m: Necessity is the mother of invention
An estimated 80 percent of the world's nuclear medicine – or approximately 70,000 SPECT scans per day – are contingent upon access to an isotope ... «DOTmed.com, giu 15»
Perma-Fix (PESI) Unit Scales-up Production of Technetium-99m …
Perma-Fix (NASDAQ: PESI) announced that Perma-Fix Medical SA, a Polish subsidiary of the company, completed a successful scale-up of its process to ... «StreetInsider.com, giu 15»
The element that can make bones glow
Scientists spent years searching for Technetium, a chemical element that came, in time, to play a crucial role in medical diagnosis. So crucial in fact that a new ... «BBC News, mag 15»
Henderson company hopes to revolutionize process usually left to …
The company is partnering with National Security Technologies to come up with a better way to produce Technetium-99, the most-used radioactive isotope in ... «Las Vegas Review-Journal, mag 15»
Orlando-based Agencies BMDM and Technetium Join Forces
Orlando-based agencies BMDM and Technetium have joined forces to provide clients with more services that improve targeting and personalization. «Exhibitor Online, mar 15»
Success for cyclotron-produced Tc-99m
The exploration to find alternative production sources for technetium-99m, the most commonly used cardiac imaging isotope, stems from a severe shortage in ... «Medical Physics Web, mar 15»
Elements: Technetium
Technetium is essential for medical imaging, yet supplies of this short-lived radioactive manmade element are far from guaranteed. Justin Rowlatt heads to ... «BBC News, mar 15»
Immobilizing nuclear waste the focus of WSU research
Nathalie Wall, assistant professor of chemistry, and Larissa Gribat, chemistry doctoral candidate, are investigating ways to contain technetium (Tc), a radioactive ... «WSU News, feb 15»