Results 271 to 280 of about 86,854 (308)
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Chemiluminescence of Humic Acids
Nature, 1967THE concept that humic acids (HA) are heteropolycondensates of phenolic substances is now widely accepted1,2. All the humic acids have hydroxyl, methoxy, or carbonyl groups connected with the aromatic parts of the nucleus. Our earlier investigations suggested that oxidation of hydroxyl groups attached to the aromatic ring may be accompanied by ...
DANUTA SŁAWIŃSKA, JANUSZ SŁAWIŃSKI
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UNISWA Research Journal of Agriculture, Science and Technology, 2007
No Abstract. Uniswa Research Journal of Agriculture, Science and Technology Vol. 9 (1) 2006: pp.
Thwala, J, Inam, E, Hall, A, Warwick, P
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No Abstract. Uniswa Research Journal of Agriculture, Science and Technology Vol. 9 (1) 2006: pp.
Thwala, J, Inam, E, Hall, A, Warwick, P
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Humic acid reactions with amino acids
Soil Biology and Biochemistry, 1974Abstract Reactions between five humic acids extracted from soils with widely differing pedological histories and 17 amino acids commonly occurring in proteins were investigated in aqueous solutions at pH 3.0 and 6.5. The reactions were affected by: (a) nature of the humic acid: (b) pH of the system: and (c) length of contact.
M. Schnitzer, F.J. Sowden, K.C. Ivarson
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Solid Fuel Chemistry, 2015
A method for the chemical modification of humic acids with benzoyl chloride under the conditions of phase-transfer catalysis was developed. It was demonstrated by potentiometric titration that the reaction of humic acids with benzoyl chloride can occur at both hydroxyl (–OH) and carboxyl (–COOH) groups.
S. L. Khil’ko +5 more
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A method for the chemical modification of humic acids with benzoyl chloride under the conditions of phase-transfer catalysis was developed. It was demonstrated by potentiometric titration that the reaction of humic acids with benzoyl chloride can occur at both hydroxyl (–OH) and carboxyl (–COOH) groups.
S. L. Khil’ko +5 more
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Natural Humic‐Acid‐Based Phototheranostic Agent
Advanced Healthcare Materials, 2018AbstractHumic acids, a major constituent of natural organic carbon resources, are naturally formed through the microbial biodegradation of animal and plant residues. Due to numerous physiologically active groups (phenol, carboxyl, and quinone), the biomedical applications of humic acid have been already investigated across different cultures for ...
Zhao‐Hua Miao +9 more
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MicroRNAome genome: A treasure for cancer diagnosis and therapy
Ca-A Cancer Journal for Clinicians, 2014Ioana Berindan-Neagoe +2 more
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