Results 11 to 20 of about 778,771 (262)
Ions in hyaluronic acid solutions [PDF]
The Journal of Chemical Physics, 2009 Hyaluronic acid (HA) is an anionic biopolymer that is almost ubiquitous in biological tissues. An attempt is made to determine the dominant features that account for both its abundance and its multifunctional role, and which set it apart from other types of biopolymers.
Horkay, Ferenc +4 more
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Solution properties of polygalacturonic acid [PDF]
Biochemical Journal, 1969 1. The specimen of polygalacturonic acid used in these studies was shown to contain very little neutral sugar, methyl ester groups or ash, and only residues of galacturonic acid. Its electrophoretic homogeneity was examined in pyridine–acetic acid buffer at pH6·5 and in borate buffer at pH9·2. The distribution of effective particle weights was shown to
R W, Stoddart, I P, Spires, K F, Tipton
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The Conversion Kinetics of Tincal to Boric Acid in Nitric Acid Solutions [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2020 Pure borax and various boron compounds are produced from the solutions in which tincal is dissolved with various reagents. Economically important boron compounds such as boric acid, borax, boric oxide, and refined hydrated sodium borates and perborates ...
Mehmet Tunc +4 more
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Ribonucleic acid–deoxyribonucleic acid hybridization in aqueous solutions and in solutions containing formamide [PDF]
Biochemical Journal, 1971 Hybridization in 6×SSC (SSC, 0.15m-sodium chloride–0.015m-sodium citrate) at 66°C was compared with hybridization in formamide−6×SSC (1:1, v/v) at 35°C. As expected, the RNA hybridization potential was labile in the former system and stable in the latter. DNA retention by filters was poor in the formamide system, but could be improved.
S, Gillespie, D, Gillespie
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Corrosion and deterioration mechanism of water-rich filling materials in acid solution
工程科学学报, 2016 To study the impact of acid environment on the water-rich filling materials, experimental methods including intensity detection, scanning electron microscopy and X-ray diffraction were used to analyze the macro and micro changes of water-rich filling ...
LIU Juan-hong, GAO Meng, WU Ai-xiang
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International Journal of Electrochemical Science, 2010 Corrosion inhibition effect of black pepper (BP) extract and its piperine isolated from BP on corrosion of C38 steel in 1 M HCl solution was investigated by weight loss method. Piperine was isolated by ethanol in yield 6 from ground BP.
M. Dahmani +4 more
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Deprotonation of salicylic acid and 5-nitrosalicylic acid in aqueous solutions of ethanol [PDF]
Journal of the Serbian Chemical Society, 2011 The protonation constant values of two hydroxybenzoic acids (salicylic and 5-nitrosalicylic acid) were studied in some water-ethanol solutions using spectrophotometric and potentiometric methods at 25°C and in an ionic strength of 0.1 M sodium ...
Faraji Mohammad +3 more
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Joint effect of organic acids and inorganic salts on cloud droplet activation [PDF]
Atmospheric Chemistry and Physics, 2011 We have investigated CCN properties of internally mixed particles composed of one organic acid (oxalic acid dihydrate, succinic acid, adipic acid, citric acid, cis-pinonic acid, or Nordic reference fulvic acid) and one inorganic salt (sodium chloride or ...
M. Frosch +4 more
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Molecules, 2023 To investigate the synergistic catalytic effects of boric acid and α-hydroxycarboxylic acids (HCAs), we analyzed and measured the effects of the complexation reactions between boric acid and HCAs on the ionization equilibrium of the HCAs.
Rongxiu Qin +4 more
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Mechanical Properties of Reactive Powder Concrete (RPC) Exposed to Acidic Solutions
Tikrit Journal of Engineering Sciences, 2022 This research work includes an experimental investigation to study the mechanical properties of reactive powder concrete (RPC) exposed to acidic solutions.
Ali H. Ali, Ahmed K. Ibrahim
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