Results 21 to 30 of about 97,761 (300)

An Investigation of Iodovanadinite Wasteforms for the Immobilisation of Radio-Iodine and Technetium

Ceramics, 2023
99Tc and 129I are two long-lived, highly soluble and mobile fission products that pose a long-term hazard. A proposed wasteform for the disposal of radio-iodine is iodovanadinite (Pb5(VO4)3I), an apatite-structured vanadate.
Daniel J. Bailey, Erik V. Johnstone, Martin C. Stennett, Claire L. Corkhill, Neil C. Hyatt   +4 more
doaj   +1 more source

Study on Separation of Rhenium, a Surrogate Element of Fissiogenic Technetium, from Aqueous Matrices Using Ion-Selective Extraction Chromatographic Resins

Separations, 2023
Long-lived fissiogenic technetium, 99Tc (half-life, 2.11 × 105 yrs), is a byproduct of the 235U and 239Pu fission in nuclear reactors and is a major component in nuclear waste.
M. Ferdous Alam, Zinnat A. Begum, Yoshiaki Furusho, Hyoe Takata, Ismail M. M. Rahman   +4 more
doaj   +1 more source

TECHNETIUM-99

, 1964
Edward V. Sayre
openalex   +3 more sources

Spontaneous redox continuum reveals sequestered technetium clusters and retarded mineral transformation of iron

Communications Chemistry, 2020
The sequestration of metal ions into the crystal structure of minerals is common in nature. To date, the incorporation of technetium(IV) into iron minerals has been studied predominantly for systems under carefully controlled anaerobic conditions ...
D. Boglaienko, J. Soltis, R. Kukkadapu, Yingge Du, L. Sweet, Vanessa E. Holfeltz, G. Hall, E. Buck, C. Segre, H. Emerson, Y. Katsenovich, T. Levitskaia   +11 more
semanticscholar   +1 more source

The Shortage of Technetium-99m and Possible Solutions

, 2020
Following a major shortage of 99Mo in the 2009–2010 period, concern grew that the aging reactor production facilities needed to be replaced.
T. Ruth
semanticscholar   +1 more source

Determination of technetium-99 in environmental samples: A review

Analytica Chimica Acta, 2012
Keliang Shi, Xiaolin Hou
exaly   +2 more sources

New leads for fragment-based design of rhenium/technetium radiopharmaceutical agents

IUCrJ, 2017
Multiple possibilities for the coordination of fac-[Re(CO)3(H2O)3]+ to a protein have been determined and include binding to Asp, Glu, Arg and His amino-acid residues as well as to the C-terminal carboxylate in the vicinity of Leu and Pro.
Alice Brink, John R. Helliwell
doaj   +1 more source

Radioisotopic purity and imaging properties of cyclotron-produced 99mTc using direct 100Mo(p,2n) reaction [PDF]

, 2018
Evaluation of the radioisotopic purity of technetium-99m (99mTc) produced in GBq amounts by proton bombardment of enriched molibdenum-100 (100Mo) metallic targets at low proton energies (i.e. within 15\u201320 MeV) is conducted.
Bello, M., Boschi, A., Cicoria, G., De Nardo, L., Di Domenico, G., Duatti, A., Esposito, J., Groppi, F., Loriggiola, M., Manenti, S., Marengo, M., Martini, P., Melendez-Alafort, L., Mou, L., Pasquali, M., Pupillo, G., Rosato, A., Rossi-Alvarez, C., Salvini, A., Selva, A., Strada, L., Taibi, A., Uccelli, L., Uzunov, N. M., Zagni, F.   +24 more
core   +2 more sources

Technetium in S SCULPTORIS [PDF]

Publications of the Astronomical Society of the Pacific, 1973
Evidence is given for the presence of technetium in S Sci, a long-period Me variable.
openaire   +4 more sources

Biodistribution Study of the Anaesthetic Sodium Phenobarbital Labelled with Technetium-99m in Swiss Mice Infected with Schistosoma mansoni Sambon, 1907

Memorias do Instituto Oswaldo Cruz, 1997
Technetium-99m (99mTc) is a radionuclide that has negligible enviromnental impact, is easily available, inexpensive and can be used as a radioactive tracer in biological experiences.
Susana Balmant Emerique Simões, José Roberto Machado-Silva, Bianca Gutfilen, Octávio Augusto França Presgrave, Márcia Betânia Oliveira, Mario Bernardo-Filho   +5 more
doaj   +1 more source