Πλοήγηση Τμήμα Χημείας / Department of Chemistry ανά Τίτλο
Αποτελέσματα 1235-1254 από 1302
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Article
Unravelling excited state dynamics of a single stranded DNA-Assembled Conjugated Polyelectrolyte
(American Chemical Society, 2023-10-26)Conformational templating of conjugated polyelectrolytes with single-stranded DNAs (ssDNAs) has the prospect of tailoring excited state dynamics for specific optoelectronic applications. We use ultrafast time-resolved ...
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Article
An unusual photo-induced conformational polymorphism: A crystallographic study of bis(p-methoxy)-trans-stilbene
(1984)A novel example of a photo-induced single-crystal to single-crystal phase transformation is described for the title compound
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Article
Uranium adsorption by non-treated and chemically modified cactus fibres in aqueous solutions
(2013)The adsorption efficiency of Opuntia ficus indica fibres regarding the removal of hexavalent uranium [U(VI)] from aqueous solutions has been investigated prior and after the chemical treatment (e.g. phosphorylation and ...
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Article
Uranium adsorption by polyvinylpyrrolidone/chitosan blended nanofibers
(2019)PVP/chitosan blended nanofibers have been prepared and investigated as adsorbent material for the removal of hexavalent uranium (U(VI)) from aqueous solutions. The nanofibers have been characterized prior and after U(VI) ...
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Article
Uranium analysis in Cypriot groundwaters by total alpha-radiometry and alpha-spectroscopy
(2011)Two different alpha-radiometric methods (e.g. alpha-spectroscopy and alpha-particle counting) have been applied to the determination of uranium in Cypriot groundwater samples after separation of the radionuclides by cation ...
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Article
Uranium analysis in drinking waters in Cyprus
(2017)Uranium determination and speciation in drinking waters consumed in Cyprus has been carried out by means of alpha-spectroscopy and thermodynamic calculations. Sampling included tap waters from different areas as well as ...
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Article
Uranium binding by biochar fibres derived from Luffa cylindrica after controlled surface oxidation
(2017)Controlled surface modification of biochar fibres derived from Luffa cylindrica sponges has been carried out by nitric acid and the degree of oxidation could be controlled by changing the acid concentration or the reaction ...
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Article
Uranium chemistry in stack solutions and leachates of phosphogypsum disposed at a coastal area in Cyprus
(2008)The effect of the matrix composition (main constituents) on the concentration and chemical behavior of uranium in phosphogypsum stack solutions and leachates has been investigated. Solid and aqueous samples were taken from ...
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Article
Uranium desorption from microplastic surfaces
(Springer, 2023)The desorption of uranium from microplastic surfaces has been investigated as a function of pH in aqueous solutions under ambient conditions. In addition, the effect of complexing ligands (e.g. EDTA) on the desorption from ...
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Article
Uranium determination in water samples by liquid scintillation counting after cloud point extraction
(2010)The aim of this study is the radiometric determination of uranium in waters by liquid scintillation counting (LSC) after pre-concentration of the element by cloud point extraction (CPE). For CPE, tributyl phosphate (TBP) ...
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Article
Uranium in ground water samples of Northern Greece
(2011)The activity concentrations of 238U and 234U have been determined in groundwater samples of hot springs and deep wells in Northern Greece. The analysis was performed by alpha spectroscopy after pre-concentration and ...
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Article
Uranium levels in Cypriot groundwater samples determined by ICP-MS and α-spectroscopy
(2013)The uranium concentration and the isotopic ratio 238U/234U have been determined in Cypriot groundwater samples by ICP-MS after ultrafiltration and acidification of the samples and α-spectroscopy after pre-concentration and ...
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Article
Uranium monitoring in ground- and wastewaters
(2018)Uranium in ground- and wastewater samples has been analyzed by alpha-spectroscopy after pre-concentration and separation by means of a chelating resin Lewatit TP 207, and following electrodeposition of the radioelement on ...
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Article
Uranium recovery from phosphate rocks/minerals – A comprehensive review
(Elsevier, 2024)Although the use of nuclear energy is still viewed with caution due to various problems associated, such as the safe operation of 'aging' nuclear plants and the final disposal of nuclear waste, many countries in Europe are ...
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Review
Uranium Removal from Aqueous Solutions by Aerogel-Based Adsorbents—A Critical Review
(MDPI, 2023)Aerogels are a class of lightweight, nanoporous, and nanostructured materials with diverse chemical compositions and a huge potential for applications in a broad spectrum of fields. This has led the IUPAC to include them ...
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Article
Uranium sorption from aqueous solutions by activated biochar fibres investigated by FTIR spectroscopy and batch experiments
(2015)The efficiency of activated biochar fibres obtained from Opuntia ficus indica regarding the sorption of hexavalent uranium (U(VI)) from aqueous solutions has been investigated by batch experiments, as a function of various ...
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Article
Uranium(VI) binding by pine needles prior and after chemical modification
(2018)Adsorption of U(VI) by pine needles prior and after carbonization and following oxidation has been investigated by batch-type experiments and characterized by FTIR and SEM measurements. The experimental data have been ...
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Article
Urine and fecal samples targeted metabolomics of carobs treated rats
(2019)Ceratonia siliqua, known as the carob, is considered to be of high nutritional value and of great economic significance due to its unique composition. The beneficial effects of carob against cancer, metabolic syndrome, ...
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Conference Object
Urine and feces metabolomics-based analysis of carob treated rats
(MDPI AG, 2017)Ceratonia siliqua L. Fabaceae, commonly known as the carob tree, is native to the eastern Mediterranean countries and its products are widely used in the diet of people living in Mediterranean Europe, Middle East and North ...
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Book Chapter
Use of chemometric analysis in the characterization of the adsorption properties of nanoporous solids
(Pan Stanford Publishing Pte. Ltd., 2011)