Results 41 to 50 of about 16,443 (322)

Sorption of Uranium(VI) and Thorium(IV) by Jordanian Bentonite

Journal of Chemistry, 2013
Purification of raw bentonite was done to remove quartz. This includes mixing the raw bentonite with water and then centrifuge it at 750 rpm; this process is repeated until white purified bentonite is obtained.
Fawwaz I. Khalili, Najla'a H. Salameh, Mona M. Shaybe   +2 more
doaj   +1 more source

Helium Shortage 4.0: How to Face the Problem Through Its Energy-efficient Recovery from Natural Gas

Chemical Engineering Transactions, 2023
Helium is an extraordinary commodity. Its many remarkable properties, i.e., lightness, inertness, small atomic size, low liquefaction temperature, make this element play a crucial role in advanced technological sectors.
Elvira Spatolisano, Laura Annamaria Pellegrini   +1 more
doaj   +1 more source

Improvements to 232-thorium, 230-thorium, and 231-protactinium analysis in seawater arising from GEOTRACES intercalibration [PDF]

, 2012
The GEOTRACES program requires the analysis of large numbers of seawater samples for ^(232)Th, ^(230)Th, and ^(231)Pa. During the GEOTRACES international intercalibration exercise, we encountered unexpected difficulties with recovery and contamination of
Anderson, Robert F., Auro, Maureen E., Bradtmiller, Louisa I., Burke, Andrea, Fleisher, Martin Q., Robinson, Laura F.   +5 more
core   +4 more sources

Determination of Thorium and Potassium Oxide in Geological Samples by Inductively Coupled Plasma-Optical Emission Spectrometry

Yankuang ceshi, 2019
BACKGROUND Simultaneous determination of thorium and potassium in geological samples can provide an important basis for exploration of radioactive mineral resources and evaluation of the natural radioactive ecological environment.
QIN Xiao-li, TIAN Gui, LI Chao-chang, JIANG Zhi-lin   +3 more
doaj   +1 more source

RECOVERY OF THORIUM AND URANIUM FROM MONAZITE SANDS. Progress Report for September 1949 [PDF]

, 1949
G.D. Calkins, R.B. Jr. Filbert, R. H. Poirier   +2 more
openalex   +4 more sources

A Novel Phosphonated Polyethyleneimine Composite for the Removal of Thorium(iv) and Uranium(vi) Ions from Aqueous Solutions: Kinetic, Isotherm, and Thermodynamic Studies [PDF]

Iranian Journal of Chemistry & Chemical Engineering
Hyperbranched polymers are one of the most promising, cost-effective, and important materials sorbents for wastewater treatment. In this study, a newly synthesized hyperbranched Polyethylene-Methylene Phosphine Oxide (PEMPO) was characterized and applied
Wissam Amina Miloudi, Khalil Oukebdane, Omar Abderrahim, Mohammed Amine Didi   +3 more
doaj   +1 more source

New limits on $2\varepsilon$, $\varepsilon\beta^+$ and $2\beta^+$ decay of $^{136}$Ce and $^{138}$Ce with deeply purified cerium sample

, 2017
A search for double electron capture ($2\varepsilon$), electron capture with positron emission ($\varepsilon\beta^+$), and double positron emission $2\beta^+$) in $^{136}$Ce and $^{138}$Ce was realized with a 465 cm$^3$ ultra-low background HP Ge $\gamma$
Belli, P., Bernabei, R., Boiko, R. S., Cappella, F., Cerulli, R., Danevich, F. A., Incicchitti, A., Kropivyansky, B. N., Laubenstein, M., Mokina, V. M., Polischuk, O. G., Tretyak, V. I.   +11 more
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Reduced vascular leakage correlates with breast carcinoma T regulatory cell infiltration but not with metastatic propensity

Molecular Oncology, EarlyView.
A mouse model for vascular normalization and a human breast cancer cohort were studied to understand the relationship between vascular leakage and tumor immune suppression. For this, endothelial and immune cell RNAseq, staining for vascular function, and immune cell profiling were employed.
Liqun He, Chiara Testini, Neda Hekmati, Altea Bonello, Aglaia Schiza, Emmanuel Nwadozi, Mia Phillipson, Carina Strell, Michael Welsh   +8 more
wiley   +1 more source

Thorium Energy Futures [PDF]

, 2012
The potential for thorium as an alternative or supplement to uranium in fission power generation has long been recognised, and several reactors, of various types, have already operated using thorium-based fuels.
,, Ashley, V, Ashworth, R, Barlow, R, Biarrotte, JL, Cywinski, R, Henderson, S, Horak, W, Hutton, A, Kelly, J, Lindroos, M, McIntyre, P, Norlin, A, Owen, H, Parks, G, Peggs, S, Roser, T, Seviour, R   +17 more
core   +1 more source