Results 21 to 30 of about 133,410 (217)

N,N,N’,N’-Tetrabutyl-1,10-phenanthroline-2,9-dicarboxamide as Very Effective Extraction Agent for Trivalent Europium and Americium

Acta Chimica Slovenica, 2017
Solvent extraction of microamounts of Eu3+ and Am3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H+B-) and N,N,N’,N’-tetrabutyl-1,10-phenanthroline-2,9-dicarboxamide (L) was studied.
Emanuel Makrlík, Petr Vaňura, Pavel Selucký, Vasily Babain, Dmitriy Dar'in, Mikhail Alyapyshev   +5 more
doaj   +1 more source

Non-perturbatively Improved Heavy-Light Mesons: Masses and Decay Constants [PDF]

, 1998
We present a study of the heavy-light spectrum and of the D- and B-meson decay constants. The results wer e obtained in the quenched approximation, by using the non-perturbatively improved Clover lattice action at beta=6.2, with a sample of 100 ...
A. Abada, A. Ali Khan, A. X. El-Khadra, A. X. El-Khadra, B. Sheikloleslami, C. Bernard, C. Bernard, C. Caso, C. G. Boyd, C. R. Allton, C. R. Allton, C. W. Bernard, D. Becirevic, D. Becirevic, D. J. Broadhurst, E. Bagan, F. Mescia, F. Rapuano, G. Heatlie, G. Martinelli, G. Martinelli, G. P. Lepage, H. Wittig, J. P. Leroy, M. Bochicchio, M. Bochicchio, M. Crisafulli, M. Guagnelli, M. Lüscher, M. Lüscher, M. Lüscher, M. Neubert, M. Neubert, M. Neubert, Ph. Boucaud, R. M. Baxter, R. Sommer, S. Aoki, S. Sharpe, S. Sharpe, S. Sharpe, S. Sint, V. Lubicz   +42 more
core   +3 more sources

Studies on the Sulfur-containing Chelating Agents. XXXIV. Determination of Stability Constant of Mercury Complex of Monothiodibenzoylmethane and Monothiothenoyltrifluoroacetone by Solvent Extraction Method

Chemical and Pharmaceutical Bulletin, 1972
Stability constants and extraction constants of mercury complexes of monothiodibenzoylmethane (SBB) and monothiothenoyltrifluoroacetone (STTA) were determined by the solvent extraction method in the presence of cyanide ion as the auxiliary complexing agent. Chloroform was used as the solvent. These values were compared with those of mercury dithizonate.
AKIRA YOKOYAMA, NOBUKO NAKANISHI, HISASHI TANAKA   +2 more
openaire   +2 more sources

The Synergistic Effect in Solvent Extraction—The Correlation of the Ionic Radius of Rare Earth Elements with the Stability Constants of Rare Earth Benzoyltrifluoroacetonate Adducts with n-Hexyl Alcohol, TBP and TOPO [PDF]

Bulletin of the Chemical Society of Japan, 1967
Abstract The synergistic effects of n-hexyl alcohol, TBP and TOPO on the extraction of rare earth ions with benzoyltrifluoroacetone in benzene have been studied. The stability constants of the adducts were determined by means of the curve-fitting method.
Tsunenobu Shigematsu, Masayuki Tabushi, Masakazu Matsui, Takaharu Honjyo   +3 more
openaire   +1 more source

Decay Constants of Heavy-Light Mesons from QCD

, 2015
We summarize recently improved results for the pseudoscalar [1,2] and vector [3] meson decay constants and their ratios from QCD spectral sum rules where N2LO + estimate of the N3LO PT and power corrections up to d< 6 dimensions have been included in the
Narison, Stephan
core   +3 more sources

Determining kinetic constants and transport efficiencies at membrane interfaces to optimize the removal/recovery of Cu(II) through lulk liquid membranes containing benzoylacetone as carrier [PDF]

, 2017
The removal, separation, and enrichment of heavy metals in aqueous solutions has become a prime concern over the last few decades because of both their adverse effects on the ecosystem and living organisms and their valuable resource character.
Gómez Gómez, Elisa, Hidalgo Montesinos, Asunción María, León Albert, Gerardo, Miguel Hernández, Beatriz, Murcia Almagro, María Dolores   +4 more
core   +2 more sources

2,6-Bis((benzoyl-R)amino)pyridine (R = H, 4-Me, and 4-NMe₂) Derivatives for the Removal of Cu(II), Ni(II), Co(II), and Zn(II) Ions from Aqueous Solutions in Classic Solvent Extraction and a Membrane Extraction

Membranes, 2021
In this paper, the application of new substituted 2,6-bis((benzoyl-R)amino)pyridine (R = H, 4-Me, and 4-NMe2) derivatives for the recovery of copper(II), nickel(II), cobalt(II), and zinc(II) ions from aqueous solutions was described.
Daria Bożejewicz, Borys Ośmiałowski, Małgorzata Anna Kaczorowska, Katarzyna Witt   +3 more
doaj   +1 more source

Mini-review on QCD spectral sum rules

, 2014
Taking the example of the most popular and well-established Borel / Laplace / Exponential sum rule (LSR), I shortly review some of its recent applications in hadron physics namely the estimates of non-perturbative condensates, the determination of the ...
Narison, Stephan
core   +3 more sources

Influence of Electronic Modulation of Phenanthroline-Derived Ligands on Separation of Lanthanides and Actinides

Molecules, 2022
The solvent extraction, complexing ability, and basicity of tetradentate N-donor 2,9-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-1,10-phenanthroline (CyMe4-BT- Phen) and its derivatives functionalized by Br, hydroxyphenyl, nitryl ...
Ming-Ming Li, Xiao-Juan Liu, Qi Yang, Yue-Kun Liu, Jiang Nie, Shu-Ming Yang, Ya-Ya Yang, Fu-Yan Lou, Song-Tao Xiao, Ying-Gen Ouyang, Guo-An Ye   +10 more
doaj   +1 more source

Optimization of β-cyclodextrin-based extraction of antioxidant and anti-browning activities from thyme leaves by response surface methodology [PDF]

, 2018
Thyme (Thymus vulgaris) has been demonstrated to extend the shelf-life of food products, being also a potential source of bioactive compounds. The aim of this research was to optimize the ultrasound assisted extraction employing β-cyclodextrin aqueous ...
Buera, Maria del Pilar, dos Santos, Cristina, Favre, Leonardo Cristian, Lopez Fernandez, Maria Paula, Mazzobre, Maria Florencia   +4 more
core   +1 more source