Results 61 to 70 of about 68,500 (261)
S stars and s-process in the Gaia era I. Stellar parameters and chemical abundances in a sub-sample of S stars with new MARCS model atmospheres [PDF]
A&A 620, A148 (2018), 2018 S stars are transition objects between M-type giants and carbon stars on the asymptotic giant branch (AGB). They are characterized by overabundances of s-process elements. Roughly half of them are enhanced in technetium (Tc), an s-process element with no stable isotope, while the other half lack technetium.
arxiv +1 more source
InorganicsIn contrast to corresponding nitrosyl compounds, thionitrosyl complexes of rhenium and technetium are rare. Synthetic access to the thionitrosyl core is possible by two main approaches: (i) the treatment of corresponding nitrido complexes with S2Cl2 and (
Domenik Nowak +3 more
doaj +1 more source
Technetium-99m scintimammography in the diagnosis of malignant breast tumors [PDF]
Vojnosanitetski Pregled, 2004 Background. Technetium-99m (99mTc) tetrofosmin scintigraphy is a new imaging method for the diagnosis of various malignancies, such as lung, thyroid, and most frequently breast neoplasms.
Jauković Ljiljana
doaj +1 more source
Time-integrated supernova neutrino flux from a nearby cluster [PDF]
Astropart.Phys.27:233-237,2007, 2005 The rate of gravitational collapse (type II) supernovae in our galaxy is uncertain by a factor of three or more. One way to determine the galactic supernova rate is through a radiogeochemical experiment (for example, the molybdenum-technetium experiment) that would integrate the neutrino flux over several million years.
arxiv +1 more source
Behavior of technetium in nuclear waste vitrification processes
Journal of Radioanalytical and Nuclear Chemistry, 2015 Nearly 100 tests were performed with prototypical melters and off-gas system components to investigate the extents to which technetium is incorporated into the glass melt, partitioned to the off-gas stream, and captured by the off-gas treatment system ...
I. Pegg
semanticscholar +1 more source
Frontiers in Oncology, 2021 BackgroundThis study aimed to evaluate the clinical value of indocyanine green sentinel lymph node (SLN) mapping in patients with vulvar cancer. The conventional procedure of SLN mapping in vulvar cancer includes peritumoral injection of technetium-99m ...
Franziska Siegenthaler +5 more
doaj +1 more source
The Nuclear Imaging Uncertainty Principle. Do Nuclear Cameras Really Work? [PDF]
, 2010 The introduction of the Heisenberg Uncertainty principle and Nuclear Cardiology occurred simultaneously in 1925-1927. Thirty years later the Anger gamma camera would allow for a more sophisticated radioactive isotope counting to determine the presence or
Gordon Harrington, Richard Fleming
core +1 more source
Influence of Storage Temperature on Radiochemical Purity of 99mTc-Radiopharmaceuticals [PDF]
, 2018 The influence of effective room temperature on the radiochemical purity of 99mTc-radiopharmaceuticals was reported. This study was born from the observation that in the isolators used for the preparation of the 99mTc-radiopharmaceuticals the ...
Bartolomei, Mirco +14 more
core +2 more sources
Technetium: The First Radioelement on the Periodic Table
, 2017 The radioactive nature of technetium is discussed using a combination of introductory nuclear physics concepts and empirical trends observed in the chart of the nuclides and the periodic table of the elements.
E. Johnstone +4 more
semanticscholar +1 more source
Comparison of technetium-99m IgG with technetium-99m red blood cells labeling in cardiac blood-pool scintigraphy: A preliminary study [PDF]
, 2011 This first clinical prospective study was conducted to use of technetium-99m immunoglobulin G (99mTc-IgG) as compared with autologous 99mTc-red blood cells (RBC) in gated blood pool ventriculography.
Amini, A. +7 more
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