Results 11 to 20 of about 84,041 (333)

Discovery of the actinium, thorium, protactinium, and uranium isotopes [PDF]

open access: green, 2012
Currently, 31 actinium, 31 thorium, 28 protactinium, and 23 uranium isotopes have so far been observed; the discovery of these isotopes is discussed.
Amaldi   +130 more
core   +2 more sources

Spectrometric study of condensed phase species of thorium and palladium-based modifiers in a complex matrix for electrothermal atomic absorption spectrometry [PDF]

open access: yes, 2007
The chemical and morphological transformations of condensed phase species of a thorium-based modifier were studied over the temperature range 200–2500 °C, without and with the presence of aluminium and silicon as matrix components, and in some instances,
Aller, A. J.   +4 more
core   +1 more source

Experimental studies of thorium ions implantation from pulse laser plasma into thin silicon oxide layers [PDF]

open access: yes, 2017
We report the results of experimental studies related to implantation of thorium ions into thin silicon dioxide by pulsed plasma fluxes expansion. Thorium ions were generated by laser ablation from a metal target, and the ionic component of the laser ...
Borisyuk, P. V.   +9 more
core   +2 more sources

A geoneutrino experiment at Homestake [PDF]

open access: yes, 2006
A significant fraction of the 44TW of heat dissipation from the Earth's interior is believed to originate from the decays of terrestrial uranium and thorium.
A. A. Kremenetsky   +30 more
core   +4 more sources

Ultra-effective modified clinoptilolite adsorbent for selective thorium removal from radioactive residue

open access: yesScientific Reports, 2023
This study investigated the efficacy of using phosphate-modified zeolite (PZ) as an adsorbent for removing thorium from aqueous solutions. The effects of various factors such as contact time, adsorbent mass, initial thorium concentration, and pH value of
Abdulrahman Masoud Alotaibi   +2 more
doaj   +1 more source

Landscape control of uranium and thorium in boreal streams – spatiotemporal variability and the role of wetlands [PDF]

open access: yesBiogeosciences, 2012
The concentrations of uranium and thorium in ten partly nested streams in the boreal forest region were monitored over a two-year period. The investigated catchments ranged from small headwaters (0.1 km<sup>2</sup>) up to a fourth-order ...
F. Lidman, C. M. Mörth, H. Laudon
doaj   +1 more source

The impact of the enrichment of the radionuclide thorium in the water body caused by industrial mining on the local ecological environment [PDF]

open access: yesE3S Web of Conferences, 2021
In order to further understand the impact of industrial mining on the environment, this study conducted environmental monitoring on the radionuclide thorium content in a water body in an industrial mining area in Gansu Province, aiming to fully ...
Hu Fengjiao, Deng Li, Chen Zhichao
doaj   +1 more source

Antineutrino Geophysics with Liquid Scintillator Detectors [PDF]

open access: yes, 1997
Detecting the antineutrinos emitted by the decay of radioactive elements in the mantle and crust could provide a direct measurement of the total abundance of uranium and thorium in the Earth.
Avilez   +28 more
core   +2 more sources

Science Potential of a Deep Ocean Antineutrino Observatory [PDF]

open access: yes, 2006
This paper presents science potential of a deep ocean antineutrino observatory under development at Hawaii. The observatory design allows for relocation from one site to another.
Aharmin   +23 more
core   +2 more sources

Investigation of kinetic, isotherm and adsorption efficacy of thorium by orange peel immobilized on calcium alginate

open access: yesScientific Reports, 2023
In this research work the thorium uptake on immobilized protonated orange peel was studied in a batch system. The effects of effective parameters such as biosorbent dosage, initial metal ion concentration, and contact time on the biosorption of thorium ...
Ali A. Gh. Khamseh   +3 more
doaj   +1 more source

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