Results 51 to 60 of about 7,206 (242)

Uranium carbene compounds

open access: yesComptes Rendus. Chimie, 2013
This article gives an overview of the development of uranium carbene complexes. The first example of these compounds was reported in 1981 with the phosphoylide complex Cp 3 U CHPMe 2
openaire   +1 more source

A Systemic Model for Understanding Business Interactions With Biodiversity and Ecosystems

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Biodiversity loss and ecosystem degradation represent critical threats to human well‐being and economic resilience, challenging businesses to understand and manage their interdependence with natural systems. This study develops a systemic framework—the BioModel—that elucidates the reciprocal relationship between businesses, biodiversity, and ...
Lino Cinquini   +2 more
wiley   +1 more source

Bioleaching of uranium from ores and rocks using filamentous fungi

open access: yesFrontiers in Microbiology
The purpose of this article is to review the role of filamentous fungi in the leaching of uranium from ores and rocks. Fungi produce short-chain fatty acids through the fermentation and partial oxidation of organic compounds.
Tariq M. Bhatti, Olli H. Tuovinen
doaj   +1 more source

Silane coupling and mordanting as attachment techniques for pyridylazo and thiazolylazo ligands in the synthesis of adsorbents for uranium in seawater

open access: yesAdsorption Science & Technology, 2018
Activated carbon adsorbents modified with azo compounds (4-(2-pyridylazo)resorcinol, 1-(2-pyridylazo)-2-naphthol, 4-(2-thiazolylazo)resorcinol), or with allyl and vinylbenzyl derivatives of 4-(2-thiazolylazo)resorcinol, were observed to be highly ...
Grace M Pooley   +4 more
doaj   +1 more source

Assessment of radiation exposure around abandoned uranium mining area of Stara planina Mt., Serbia [PDF]

open access: yesNuclear Technology and Radiation Protection, 2014
The aim of this work was to estimate the health and radiation hazard due to external irradiation from terrestrial radionuclides in the Stara planina Mt. region, which is important because of past uranium mining activities on the mountain.
Tanić Milan N.   +4 more
doaj   +1 more source

Accurate Molecular Size Determination by Diffusion Ordered NMR Spectroscopy Based on an Improved Diffusion Model

open access: yesChemistry – A European Journal, EarlyView.
A semi‐empirical Stokes‐Einstein‐based model for describing the diffusion of organic, organometallic and coordination compounds is developed for the interpretation of diffusion constants obtained by diffusion‐ordered NMR spectroscopy (DOSY). This model uses the molecular volume as a descriptor and shows a high accuracy, enabling application to ...
Christian Urbank, Lisa Vondung
wiley   +1 more source

Recovery and Purification of Uranium from Rejected-Prototype Fuel Plates with Use Innovative Method [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2019
In nuclear research reactor fuel producing factories, in order to recover uranium from aluminum plate scraps of oxide fuel, the dissolving process in the caustic soda and nitric acid and, ultimately, the solvent extraction process for the purification of
K Fatemi   +3 more
doaj   +1 more source

Pharmacology and Toxicology of Uranium Compounds [PDF]

open access: yesNature, 1950
Pharmacology and Toxicology of Uranium Compounds With a Section on the Pharmacology and Toxicology of Fluorine and Hydrogen Fluoride. Edited by Dr. Carl Voegtlin and Prof. Harold C. Hodge. (National Nuclear Energy Series, Manhattan Project Technical Section, Division 6, Vol. 1.) Part 1. Pp. xviii + 524. Part 2. Pp. iv + 525 – 1084. (New York and London:
openaire   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

open access: yesDeep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang   +5 more
wiley   +1 more source

An X-ray photoelectron spectroscopy study of uranyl-chitosan interaction [PDF]

open access: yesNuclear Technology and Radiation Protection, 2008
An X-ray photoelectron spectroscopy study of uranium sorption by spherically-granulated chitosan in sulphate solutions, as well as the study of the nature of the U(VI) - chitosan interaction was carried out in this work.
Veleshko Alexander N.   +6 more
doaj   +1 more source

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