Results 1 to 10 of about 1,733,689 (305)

Mesophilic leaching of copper sulphide sludge [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
Copper was precipitated using a sodium sulphide solution as the precipitation agent from an acid solution containing 17 g/l copper and 350 g/l sulphuric acid.
Cvetkovski Vladimir B.   +3 more
doaj   +3 more sources

Synthesis of Backbone-Modified Morpholino Oligonucleotides Using Phosphoramidite Chemistry

open access: yesMolecules, 2023
Phosphorodiamidate morpholinos (PMOs) are known as premier gene knockdown tools in developmental biology. PMOs are usually 25 nucleo-base-long morpholino subunits with a neutral phosphorodiamidate linkage.
Sibasish Paul, Marvin H. Caruthers
doaj   +1 more source

Desorption of 137Cs from Cetraria islandica (L.) Ach. using solutions of acids and their salts mixtures [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
The desorption of 137Cs from Cetraria islandica (L.) Ach. lichen was investigated using the solutions: A) H2SO4–HNO3–K2SO4, B) H2SO4–HNO3–Na2SO4 and C) H2SO4–HNO3– (NH4)2SO4–(NH)4NO3 at pH 2.00, 2.58, 2.87, 3.28 and 3.75, similar to acid rain. After five
ANA A. ČUČULOVIĆ   +2 more
doaj   +3 more sources

Dissolution of chromium in sulfuric acid [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
By combining electrochemical corrosion rate measurements and spectrophotometric analysis of the electrolyte it was shown that at room temperature chromium dissolves in deaerated 0.1M Na2SO4 + H2SO4 (pH1) solution as Cr(II) and Cr(III) ions in he ratio Cr(
Dražić Dragutin M., Popić Jovan P.
doaj   +3 more sources

Novel Corrosion Inhibitor for Carbon Steel in Acidic Solutions Based on α-Aminophosphonate (Chemical, Electrochemical, and Quantum Studies)

open access: yesMolecules, 2023
α-aminophosphonate (α-AP) is used as a novel corrosion inhibitor for carbon steel. The aggressive media applied in this study are HCl and H2SO4 acid solutions.
M. A. Deyab   +6 more
doaj   +1 more source

Extraction of 137Cs from Cetraria islandica lichen using acid solutions [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
The extraction of 137Cs sorbed in samples of C. islandica using acid solutions was investigated. An equation describing the reduction of the 137Cs content in a dry lichen sample with the number of volumes of acid solutions used for successive extractions
ANA CUCULOVIC   +2 more
doaj   +3 more sources

Electrochemistry of active chromium. Part IV. Dissolution of chromium in deaerated sulfuric acid [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
Chromium dissolution in aqueous sulfuric acid solutions in the pH range 0.5 –3 was studied electrochemically by the potentiostatic or very slow potentiodynamic method, and by the analyses of the Cr ion concentrations in the electrolyte formed during the ...
D. VASILJEVIC-RADOVIC   +3 more
doaj   +3 more sources

Electrospinning and Post-Spun Chain Conformations of Synthetic, Hydrophobic Poly(α-amino acid)s. [PDF]

open access: yes, 2020
Electrospinning and post-spun conformations of hydrophobic poly(α-amino acid)s are described in this study. The poly(α-amino acid)s, poly(Gly), poly(L-Ala), poly(L-Val), and poly(L-Leu) were synthesized via corresponding N-carboxy-a-amino acid anhydrides.
Devarayan, Kesavan   +4 more
core   +1 more source

Protonation of maleic and fumaric acid in aqueous sulfuric acid solutions [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
The protonations of maleic and fumaric acid in an acidic medium (aqueous solutions of sulfuric acid) were followed spectrophotometrically at room temperature. The acid-base equilibria were characterised qualitatively and quantitatively. The pKBH+
Jankovska Katica   +2 more
doaj   +3 more sources

Development and study of the stability of comenic acid solutions

open access: yesРазработка и регистрация лекарственных средств, 2021
Introduction. The article presents the development of solutions based on the comenic acid substance. The criteria of the studied compositions that affect their stability during storage are evaluated within the framework of the Quality-by-Design concept ...
T. A. Bitkina, A. V. Basevich
doaj   +1 more source

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