Results 1 to 10 of about 1,733,689 (305)
Mesophilic leaching of copper sulphide sludge [PDF]
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
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Synthesis of Backbone-Modified Morpholino Oligonucleotides Using Phosphoramidite Chemistry
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
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Desorption of 137Cs from Cetraria islandica (L.) Ach. using solutions of acids and their salts mixtures [PDF]
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
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Dissolution of chromium in sulfuric acid [PDF]
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.
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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
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Extraction of 137Cs from Cetraria islandica lichen using acid solutions [PDF]
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
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Electrochemistry of active chromium. Part IV. Dissolution of chromium in deaerated sulfuric acid [PDF]
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
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Electrospinning and Post-Spun Chain Conformations of Synthetic, Hydrophobic Poly(α-amino acid)s. [PDF]
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
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Protonation of maleic and fumaric acid in aqueous sulfuric acid solutions [PDF]
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
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Development and study of the stability of comenic acid solutions
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
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