Investigation of the Dependence of Biological Activity on the Structural Parameters of Native and Modified Humic Acids from Brown Coal

2020 ◽  
Keyword(s):  
Biological Activity ◽  
Humic Acids ◽  
Brown Coal ◽  
Structural Parameters ◽  
Modified Humic Acids

scholarly journals Dependence of the Biological Activity of Brown Coal Humic Acids on the Concentrations of Macro and Trace Elements

2021 ◽  
Vol 55 (4) ◽  
pp. 223-228
Author(s):  
S. I. Zherebtsov ◽  
N. V. Malyshenko ◽  
K. S. Votolin ◽  
K. M. Shpakodraev ◽  
Z. R. Ismagilov ◽  
...  
Keyword(s):  
Trace Elements ◽  
Biological Activity ◽  
Humic Acids ◽  
Brown Coal ◽  
Growth Parameters ◽  
Coal Basin ◽  
Edaphic Properties ◽  
Effective Use ◽  
Soil Substrates ◽  
Properties Of Soil

Abstract The samples of humic preparations (HPs) containing macro and trace elements for plant nutrition were obtained based on humic acids isolated from brown coal of the Tisul deposit in the Kansk-Achinsk Coal Basin. The biological activity of the humic preparations was tested under laboratory and field conditions with the use of Iren and Novosibirskaya 89 varietal wheat seeds. A comparative assessment of the effects of the concentrations of various elements in the HPs on the growth parameters and productivity of cereals was carried out. The edaphic properties of soil substrates should be taken into account for a more effective use of humic preparations.

Biological Activity of Native and Modified Humic Acids

2020 ◽  
Vol 54 (4) ◽  
pp. 191-195
Author(s):  
S. I. Zherebtsov ◽  
N. V. Malyshenko ◽  
K. S. Votolin ◽  
K. M. Shpakodraev ◽  
Z. R. Ismagilov
Keyword(s):  
Biological Activity ◽  
Humic Acids ◽  
Modified Humic Acids

Characterisation of brown coal humic acids and modified humic acids using pyrolysis gcms and other techniques

1996 ◽  
Vol 32 (1-4) ◽  
pp. 229-240 ◽  
Author(s):  
W.R. Jackson ◽  
G.D. Bongers ◽  
P.J. Redlich ◽  
G. Favas ◽  
Y. Fei ◽  
...  
Keyword(s):  
Humic Acids ◽  
Brown Coal ◽  
Modified Humic Acids

Evaluation of Chemotherapeutic Activity of the Selected Bases’ Analogues of Nucleic Acids Supported by ab initio Various Quantum Chemical Calculations

2020 ◽  
Vol 16 (2) ◽  
pp. 93-103 ◽  
Author(s):  
Piotr Kawczak ◽  
Leszek Bober ◽  
Tomasz Bączek
Keyword(s):  
Biological Activity ◽  
Nucleic Acids ◽  
Ab Initio ◽  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Structural Parameters ◽  
Principal Component ◽  
Polarizable Continuum Model ◽  
Activity Data ◽  
Qsar Models

Background: Pharmacological and physicochemical classification of bases’ selected analogues of nucleic acids is proposed in the study. Objective: Structural parameters received by the PCM (Polarizable Continuum Model) with several types of calculation methods for the structures in vacuo and in the aquatic environment together with the huge set of extra molecular descriptors obtained by the professional software and literature values of biological activity were used to search the relationships. Methods: Principal Component Analysis (PCA) together with Factor Analysis (FA) and Multiple Linear Regressions (MLR) as the types of the chemometric approach based on semi-empirical ab initio molecular modeling studies were performed. Results: The equations with statistically significant descriptors were proposed to demonstrate both the common and differentiating characteristics of the bases' analogues of nucleic acids based on the quantum chemical calculations and biological activity data. Conclusion: The obtained QSAR models can be used for predicting and explaining the activity of studied molecules.

Phenanthrene Sorption to Structurally Modified Humic Acids

2003 ◽  
Vol 32 (5) ◽  
pp. 1750-1758 ◽  
Author(s):  
Myrna J. Simpson ◽  
Benny Chefetz ◽  
Patrick G. Hatcher
Keyword(s):  
Humic Acids ◽  
Modified Humic Acids
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