Results 21 to 30 of about 2,731,544 (274)

Physicochemical Characterization and Cytotoxic Activity Evaluation of Hydroxymethylferrocene:β-Cyclodextrin Inclusion Complex

open access: yesMolecules, 2012
An inclusion complex of hydroxymethylferrocene (FeMeOH) with β-cyclodextrin (β-CD) was prepared in the solid state by different techniques such as physical mixture, coprecipitation, kneading and freeze-drying.
Carla Isernia   +7 more
doaj   +1 more source

Metal Binding Ability of Small Peptides Containing Cysteine Residues

open access: yesChemistryOpen, 2021
The Cd(II)‐, Pb(II)‐, Ni(II)‐ and Zn(II)‐complexes of small terminally protected peptides containing CXXX, XXXC, XCCX, CXnC (n=1–3) sequences have been studied with potentiometric, UV/Vis and CD spectroscopic techniques.
Márton Lukács   +3 more
doaj   +1 more source

Generalized Stochastic Gradient Learning [PDF]

open access: yes, 2005
We study the properties of generalized stochastic gradient (GSG) learning in forwardlooking models. We examine how the conditions for stability of standard stochastic gradient (SG) learning both di1er from and are related to E-stability, which governs ...
Evans, George W.   +2 more
core   +2 more sources

Extraction of calcium from water into nitrobenzene using strontium dicarbollylcobaltate in the presence of 18-crown-6 [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
From extraction experiments and g-activity measurements, the extraction constant corresponding to the equilibrium Ca 2+ (aq)+ SrL 2+ (nb) === CaL 2+ (nb) + Sr 2+ (aq) taking place in the two-phase water-nitrobenzene system(L= 18-crown-6, aq ...
Danková Marcela   +2 more
doaj   +3 more sources

Conductometric Studies of the Thermodynamics of Complexation of Zn2+, Ni2+, Co2+, Pb2+, Mn2+, Cu2+ Ions with 1,13-Bis(8-Quinolyl)-1,4,7,10,13-Pentaoxatridecane in Binary Solvent Mixtures [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2012
The complexation reaction between 1,13-bis(8-quinolyl)-1,4,7,10,13-pentaoxatridecane (Kryptofix5) ligand with Zn2+, Ni2+, Co2+, Pb2+, Mn2+ and Cu2+ ions were studied conductometrically in different AcetoNitrile-NitroMethane (AN-NM) and AcetoNitrile ...
Mahmood Payehghadr   +3 more
doaj  

Stability of plane Poiseuille-Couette flows of a piezo-viscous fluid [PDF]

open access: yes, 2009
We examine stability of fully developed isothermal unidirectional plane Poiseuille--Couette flows of an incompressible fluid whose viscosity depends linearly on the pressure as previously considered in Hron01 and Suslov08.
Suslov, Sergey A., Tran, Thien Duc
core   +2 more sources

A Comparative Study of Linked 2, 2’-Dipyridylamine Ligand System as an Ion Selective Electrode for Ag (I) Ions

open access: yesInternational Journal of Electrochemical Science, 2010
The linked 2, 2’-dipyridylamine derivatives have been explored as neutral carrier ionophores for preparing poly (vinyl chloride) based electrodes selective to Ag(I) ions.
Susheel K Mittal   +3 more
doaj   +1 more source

Recovery of Scandium from Sulfuric Acid Aqueous Solutions using Ion-Exchange Resin

open access: yesJournal of MMIJ, 2022
Ion-exchange process with chelating resins was investigated for recovery scandium from sulfuric acid aqueous solutions. An iminodiacetic acid type chelating resin, Diaion CR11, had a higher Sc adsorption selectivity than other elements.
Hiroto WATANABE   +3 more
doaj   +1 more source

stability constant [PDF]

open access: yes, 2014
Citation: 'stability constant' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.ST06785 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Inverse boundary value problem for the Helmholtz equation: quantitative conditional Lipschitz stability estimates [PDF]

open access: yes, 2016
We study the inverse boundary value problem for the Helmholtz equation using the Dirichlet-to-Neumann map at selected frequencies as the data. A conditional Lipschitz stability estimate for the inverse problem holds in the case of wavespeeds that are a ...
Beretta, Elena   +3 more
core   +4 more sources

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