Possibilities of using spectral analysis in method of nuclear magnetic spectroscopy for condensed media investigation

Abstract

The necessity of developing a mathematical model for converting the recorded NMR signal using a modulation technique into the spectrum for conducting the composition of the medium under study is substantiated. A mathematical model has been developed to represent the NMR signal in the form of a spectrum, taking into account the features of its registration from condensed matter. Spectra of calculated and experimental NMR signals are presented. Them comparison are completed.

Study of the impact of recultivated granite stone quarry dumps on the environment and agricultural land in the Leningrad region

“…Currently, the technogenic human impact on the environment is growing [1][2][3][4][5][6][7][8][9][10]. Various reasons contribute to this [10][11][12][13][14][15][16][17][18][19].…”

“…Currently, the technogenic human impact on the environment is growing [1][2][3][4][5][6][7][8][9][10]. Various reasons contribute to this [10][11][12][13][14][15][16][17][18][19]. One of them is the sharp increase in industry and population [7,12,13,16,[20][21][22][23][24][25][26].…”

Features of population impact on soil pollution in small towns

“…Soils are among the most important natural resources that determine the sustainable development of states [1][2][3][4][5][6][7][8][9][10]. In the future, for Russia, the preservation of soil fertility should become the main and priority direction of agricultural development [6][7][8][9][10].…”

“…In the future, for Russia, the preservation of soil fertility should become the main and priority direction of agricultural development [6][7][8][9][10]. In recent years, there has been a sharp deterioration of the ecological condition in the world [1][2][3][4][9][10][11][12][13][14][15][16][17][18][19][20][21]. This is due to various reasons [5][6][7][8][9][10][20][21][22][23][24][25][26][27][28][29][30][31].…”

“…The increase in production is linked to population growth. More and more fertilizers are used in agricultural fields [1,[4][5][6][7][25][26][27]. The situation is particularly difficult in agricultural fields that are located near cities (usually medium and small towns).…”