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Articoli di riviste sul tema "Soils, Salts in – Mathematical models"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 6 febbraio 2022

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1

Belik, Aleksandra A., Anna A. Kokoreva, Andrei G. Bolotov, et al. "Characterizing macropore structure of agrosoddy-podzolic soil using computed tomography." Open Agriculture 5, no. 1 (2020): 888–97. http://dx.doi.org/10.1515/opag-2020-0080.

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AbstractThe agrosoddy-podzolic soil (Eutric Albic Glossic Retisol (Abruptic, Loamic, Aric, Cutanic)) is typical for Moscow Oblast and is used for agricultural purposes, resulting in use of various agrochemicals and pesticides. The presence of macropores and cracks in such soils leads to preferential water and substance transfer and nonequilibrium conditions. Therefore, it is important to study the numerical characteristics of the pore space of soils to adjust mathematical models of substance transfer. Undisturbed soil monoliths 10 cm in diameter taken from Ap (from 0 to 30 cm) and E, BE horizo

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2

Belik, Aleksandra A., Anna A. Kokoreva, Andrei G. Bolotov, et al. "Characterizing macropore structure of agrosoddy-podzolic soil using computed tomography." Open Agriculture 5, no. 1 (2020): 888–97. http://dx.doi.org/10.1515/opag-2020-0080.

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Abstract The agrosoddy-podzolic soil (Eutric Albic Glossic Retisol (Abruptic, Loamic, Aric, Cutanic)) is typical for Moscow Oblast and is used for agricultural purposes, resulting in use of various agrochemicals and pesticides. The presence of macropores and cracks in such soils leads to preferential water and substance transfer and nonequilibrium conditions. Therefore, it is important to study the numerical characteristics of the pore space of soils to adjust mathematical models of substance transfer. Undisturbed soil monoliths 10 cm in diameter taken from Ap (from 0 to 30 cm) and E, BE horiz

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3

Kozhushko, Olena, and Petro Martyniuk. "Spreading of chemical substance after its accidental spillage onto the soil surface under unsaturated conditions and variable porosity." Modeling, Control and Information Technologies, no. 3 (November 5, 2019): 41–44. http://dx.doi.org/10.31713/mcit.2019.27.

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In this paper we study a mathematical model of soil moisture transport with variable porosity. The problem is set for the case of highly concentrated solute spilled onto soil surface. We investigate the way solute transfer, adsorption of contaminant by soil particles and variable porosity influence infiltration of solute into the soil profile. For that purpose, two models are used: a classical one and the one with consideration of mentioned factors. By comparing the results of both models, we established that high concentration of solute causes moisture transport to transpire more slowly, and

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4

Barone, F. S., E. K. Yanful, R. M. Quigley, and R. K. Rowe. "Effect of multiple contaminant migration on diffusion and adsorption of some domestic waste contaminants in a natural clayey soil." Canadian Geotechnical Journal 26, no. 2 (1989): 189–98. http://dx.doi.org/10.1139/t89-028.

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This paper describes laboratory model tests involving the placement of domestic landfill leachate on top of a layer of saturated undisturbed clayey soil and allowing chemical constituents to migrate into the soil by diffusion only. During the testing period (15 days), samples from the overlying leachate were regularly collected and analyzed for the chemical constituents of interest (i.e., Cl−, Na+, K+, Mg++, and Ca++). At the end of the test, the soil layer was sectioned to determine the pore-water and adsorbed concentration variations with depth for each species. Mathematical model POLLUTE wa

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5

Khitrov, Egor, Aleksandr Andronov, Anna Khakhina, and Gleb Grigorev. "Mathematical models of machine movers’ interaction with soils." Resources and Technology 17, no. 4 (2020): 15–64. http://dx.doi.org/10.15393/j2.art.2020.5422.

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6

Havlin, J. L., D. G. Westfall, and S. R. Olsen. "Mathematical Models for Potassium Release Kinetics in Calcareous Soils." Soil Science Society of America Journal 49, no. 2 (1985): 371–76. http://dx.doi.org/10.2136/sssaj1985.03615995004900020020x.

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7

Ismayilov, Amin, and Fariz Mikailsoy. "Mathematical models of fertility for the soils of Azerbaijan." EURASIAN JOURNAL OF SOIL SCIENCE (EJSS) 4, no. 2 (2015): 118. http://dx.doi.org/10.18393/ejss.89702.

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8

Lee, Kyo Suk, Dong Sung Lee, Jae Bong Lee, Rhee Na Joo, Myong Yun Lee, and Doug Young Chung. "Mathematical Models of Competitive Adsorption of Inorganic Anions in Soils." Korean Journal of Soil Science and Fertilizer 48, no. 6 (2015): 666–70. http://dx.doi.org/10.7745/kjssf.2015.48.6.666.

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9

Wilson, David J., and Kanji Tamamushi. "Low-Temperature Thermal Treatment of Contaminated Soils: Simple Mathematical Models." Separation Science and Technology 28, no. 15-16 (1993): 2351–75. http://dx.doi.org/10.1080/01496399308019742.

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10

Esmaeelnejad, Leila, Fatemeh Siavashi, Javad Seyedmohammadi, and Mahmood Shabanpour. "The best mathematical models describing particle size distribution of soils." Modeling Earth Systems and Environment 2, no. 4 (2016): 1–11. http://dx.doi.org/10.1007/s40808-016-0220-9.

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11

Smagin, A. V. "Physically based mathematical models of the water vapor sorption by soils." Eurasian Soil Science 44, no. 6 (2011): 659–69. http://dx.doi.org/10.1134/s1064229311060135.

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12

Babajimopoulos, Christos, and Athanasios Panoras. "Estimation of the water balance of cultivated soils by mathematical models." Operational Research 5, no. 1 (2005): 127–40. http://dx.doi.org/10.1007/bf02944166.

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13

Persicani, Danilo. "Pesticide leaching into field soils: sensitivity analysis of four mathematical models." Ecological Modelling 84, no. 1-3 (1996): 265–80. http://dx.doi.org/10.1016/0304-3800(94)00136-7.

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14

Yusupov, R. A., S. Axrolov, N. M. Mirzanova, and A. N. Nasiriddinov. "MATHEMATICAL MODELS OF GEOFILTRRATION AND GEOMIGRATION IN POROUS MEDIA WITH FRACTAL STRUCTURE." PHYSICAL AND MATHEMATICAL SCIENCES 4, no. 1 (2020): 40–46. http://dx.doi.org/10.26739/2181-0656-2020-4-5.

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In this study 2-D linear models are coming from generalised, Boussinesq eqution describing geofiltration in soils with fractal structures are presented. In this study are presented too mathematical models geomigration of contaminations with groundwater in classical way and in soils with fractal structures

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15

Yusupov, R. A., Sh S. Axrolov, N. M. Mirzanova, and A. N. Nasiriddinov. "MATHEMATICAL MODELS OF GEOFILTRRATION AND GEOMIGRATION IN POROUS MEDIA WITH FRACTAL STRUCTURE." TECHNICAL SCIENCES 6, no. 3 (2020): 21–27. http://dx.doi.org/10.26739/2181-9696-2020-6-4.

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In this study 2-D linear models are coming from generalised, Boussinesq eqution describing geofiltration in soils with fractal structures are presented. In this study are presented too mathematical models geomigration of contaminations with groundwater in classical way and in soils with fractal structures.

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16

Yusupov, R. A., Sh S. Axrolov, N. M. Mirzanova, and A. N. Nasiriddinov. "MATHEMATICAL MODELS OF GEOFILTRRATION AND GEOMIGRATION IN POROUS MEDIA WITH FRACTAL STRUCTURE." TECHNICAL SCIENCES 5, no. 3 (2020): 39–45. http://dx.doi.org/10.26739/2181-9696-2020-5-6.

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In this study 2-D linear models are coming from generalised, Boussinesq eqution describing geofiltration in soils with fractal structures are presented. In this study are presented too mathematical models geomigration of contaminations with groundwater in classical way and in soils with fractal structures

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17

Gómez Salazar, Julián Andrés, Gabriela Clemente Polo, and Neus Sanjuán Pelliccer. "Review of mathematical models to describe the food salting process." DYNA 82, no. 190 (2015): 23–30. http://dx.doi.org/10.15446/dyna.v82n190.42016.

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Salting and subsequent curing are part of the traditional processing method used in the meat and fish industry. Different preserving agents (sodium chloride, nitrite, nitrate, among others) are added in this process. Nowadays, more attention is paid to the amount of salts added and the salting time employed. For this reason, it is important to know the factors governing salt penetration and the most convenient process conditions. The transfer mechanism of the salts through the structure is an interesting aspect in meat and fish processing technology. Mathematical models are the best way to dis

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18

Balamirzoev, A. G., M. A. Zerbaliev, and K. O. Kurbanov. "MATHEMATICAL MODELING OF SALTS LEACHING WITH ONEDIMENSIONAL FILTRATION OF WATER IN SOILS OF FINITE THICKNESS." Herald of Dagestan State Technical University. Technical Sciences 41, no. 2 (2016): 118–25. http://dx.doi.org/10.21822/2073-6185-2016-41-2-118-125.

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19

Yusupov, Mazhid, Raikhan Tazhibayeva, Sholpan Ziyaeva, and Kurash Kubyashev. "Numerical modeling of the salt-transfer problem in soils." E3S Web of Conferences 264 (2021): 01005. http://dx.doi.org/10.1051/e3sconf/202126401005.

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The article discusses the urgent problem associated with solving the problems of salt transfer in soils and is devoted to numerical modelling of the transference and diffusion of salts in soils, in which the total porosity of the soil is divided by the fraction of “through” and “dead-end” pores with the corresponding concentration of the solution. A brief review of scientific publications devoted to this problem is given. To study and predict the process of the spread of harmful substances, a mathematical model and a numerical algorithm for computer experimentation have been developed. The sol

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SHARMA, H. C., N. S. PASRICHA, and M. S. BAJWA. "COMPARISON OF MATHEMATICAL MODELS TO DESCRIBE BORON DESORPTION FROM SALT-AFFECTED SOILS." Soil Science 147, no. 2 (1989): 79–84. http://dx.doi.org/10.1097/00010694-198902000-00001.

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21

Vandevivere, Philippe, Philippe Baveye, Diego Sanchez de Lozada, and Paul DeLeo. "Microbial Clogging of Saturated Soils and Aquifer Materials: Evaluation of Mathematical Models." Water Resources Research 31, no. 9 (1995): 2173–80. http://dx.doi.org/10.1029/95wr01568.

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22

Camargo, Flávio Anastácio de Oliveira, Clesio Gianello, Marino José Tedesco, João Riboldi, Egon José Meurer, and Carlos Alberto Bissani. "Empirical models to predict soil nitrogen mineralization." Ciência Rural 32, no. 3 (2002): 393–99. http://dx.doi.org/10.1590/s0103-84782002000300005.

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Empirical models are mathematical equations that can be fitted to experimental results. The use of these models aims to evaluate or predict observed phenomena or experimental data with the objective of helping the development of adequate soil management practices. Based on these considerations, eight mathematical models described in the literature are compared in the present work, using as experimental data the mineral N accumulated during 32 weeks of incubation in Southern Brazilian soils. To obtain mineralization values experimentally, an incubation-washing procedure with 0.01mol L-1 CaCl2 w

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23

Vlasyuk, Anatoliy, Ihor Ilkiv, and Tetiana Tsvietkova. "Mathematical and computer modelling of interconnected processes of moisture- and heat mass transfer in non-saturated soil layer." Physico-mathematical modelling and informational technologies, no. 32 (July 7, 2021): 75–79. http://dx.doi.org/10.15407/fmmit2021.32.075.

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The paper presents the mathematical modelling of joint processes of moisture transfer and mass transfer in a non-saturated medium taking into account Osmos phenomena under non-isothermic conditions. Numeric calculations of corresponding boundary tasks were found by a method of finite differences using non-evident and monotonous differential schemes adapted for solving non-linear differential equations. As a result of program implementation of the constructed calculation algorithm, the distribution was found of salt solutions concentration under joint transfers and the impact of heat transfer w

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24

Taylor, Lyla L., David J. Beerling, Shaun Quegan, and Steven A. Banwart. "Simulating carbon capture by enhanced weathering with croplands: an overview of key processes highlighting areas of future model development." Biology Letters 13, no. 4 (2017): 20160868. http://dx.doi.org/10.1098/rsbl.2016.0868.

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Enhanced weathering (EW) aims to amplify a natural sink for CO 2 by incorporating powdered silicate rock with high reactive surface area into agricultural soils. The goal is to achieve rapid dissolution of minerals and release of alkalinity with accompanying dissolution of CO 2 into soils and drainage waters. EW could counteract phosphorus limitation and greenhouse gas (GHG) emissions in tropical soils, and soil acidification, a common agricultural problem studied with numerical process models over several decades. Here, we review the processes leading to soil acidification in croplands and ho

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25

Machado, Antônio L. T., and Carlos R. Trein. "Characterization of soil parameters of two soils of Rio Grande do Sul in modeling the prediction of tractive effort." Engenharia Agrícola 33, no. 4 (2013): 709–17. http://dx.doi.org/10.1590/s0100-69162013000400010.

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The interaction between the soil and tillage tool can be examined using different parameters for the soil and the tool. Among the soil parameters are the shear stress, cohesion, internal friction angle of the soil and the pre-compression stress. The tool parameters are mainly the tool geometry and depth of operation. Regarding to the soils of Rio Grande do Sul there are hardly any studies and evaluations of the parameters that have importance in the use of mathematical models to predict tensile loads. The objective was to obtain parameters related to the soils of Rio Grande do Sul, which are u

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26

Lyapichev, Yury P. "Choice of mathematic models of soils in static and seismic analyses of embankment dams." Structural Mechanics of Engineering Constructions and Buildings 16, no. 4 (2020): 261–70. http://dx.doi.org/10.22363/1815-5235-2020-16-4-261-270.

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Relevance. Numerical analyses of behavior or stress-strain state (SSS) of embankment dams are usually performed using various computational programs, which use different, often complex mathematical models of soils. However, the right choice of these models is left to the program user, who usually has not enough experience in this field of knowledge, and therefore the results of these analyses are often obscure and erroneous. The aims of the work - development of recommendations for selecting the most reliable mathematical models of soils in numerical analyses of embankment dams and comparing t

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Coskun, S. B., and T. Tokdemir. "Modelling of Permeation Grouting Through Soils." Journal of Applied Engineering Sciences 10, no. 1 (2020): 11–16. http://dx.doi.org/10.2478/jaes-2020-0003.

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AbstractIn this study, mathematical modeling of permeation grouting through fully saturated soil is proposed based on immiscible multiphase flow theory. Grout flow in the medium is modeled together with the existing water as the simultaneous flow of two immiscible fluids. In the model, the porous medium is assumed as isotropic and rigid, fluids are assumed as incompressible and capillary pressure is assumed as negligible. Governing equations are discretized using upstream weighted finite element technique and results show that, proposed models give good results and may be used in the numerical

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Kuzlo, Mykola. "Mathematical modelling of soil massifs strained-deformed state under soil water level decreasing." ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 2, no. 51 (2018): 73–78. http://dx.doi.org/10.26906/znp.2018.51.1295.

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The analytical solutions for the determination of vertical displacements at any point of single-layer and multilayer soil compositions under filtration water flow influence, saline solutions presence and filtration considering soil changing filtration and deformation characteristics have been obtained. The mathematical models of soil filtration and the stress-deformed state from water-saturated ground massifs and bases deformations forecast under internal volumetric forces influence (hydrodynamic forces of the filtration flow, changes in the soils own weight) have been developed and substantia

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Komarov, A. S. "Use of mathematical models for assessing the pool and dynamics of carbon in forest soils." Eurasian Soil Science 41, no. 13 (2008): 1387–97. http://dx.doi.org/10.1134/s1064229308130061.

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Galiullina, N. E., and M. G. Khramchenkov. "Mathematical Models of Mass Transfer Processes in Soils with Account for Their Interaction with Rainfall." Journal of Engineering Physics and Thermophysics 90, no. 4 (2017): 817–25. http://dx.doi.org/10.1007/s10891-017-1630-x.

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31

Pruteanu, Augustina, Valentin Vladut, Petru Cardei, and Despina Bordean. "General Tendencies of the Behaviour of Vegetables Developed in a Soil Contaminated with Heavy Metals." Revista de Chimie 71, no. 2 (2020): 85–90. http://dx.doi.org/10.37358/rc.20.2.7897.

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The paper presents experimental results obtained in the study of heavy metals transfer from soil to vegetables. The experiments for which the raw and statistically processed data are presented in this paper are preliminary experiments within an extensive research program of plant behaviour in soils contaminated with heavy metals. These experiments underlie the development of primary statistical mathematical models that are also presented in the paper. These experiments will also form the basis for far more consistent experiments that follow plants throughout the life cycle. The statistical mat

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Grau, J. B., J. M. Antón, A. M. Tarquis, F. Colombo, L. de los Ríos, and J. M. Cisneros. "An application of mathematical models to select the optimal alternative for an integral plan to desertification and erosion control (Chaco Area – Salta Province – Argentina)." Biogeosciences 7, no. 11 (2010): 3421–33. http://dx.doi.org/10.5194/bg-7-3421-2010.

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Abstract. Multi-criteria Decision Analysis (MCDA) is concerned with identifying the values, uncertainties and other issues relevant in a given decision, its rationality, and the resulting optimal decision. These decisions are difficult because the complexity of the system or because of determining the optimal situation or behaviour. This work will illustrate how MCDA is applied in practice to a complex problem to resolve such us soil erosion and degradation. Desertification is a global problem and recently it has been studied in several forums as ONU that literally says: "Desertification has a

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Erickson, Russell J., David R. Mount, Terry L. Highland, et al. "The acute toxicity of major ion salts to Ceriodaphnia dubia . III. Mathematical models for mixture toxicity." Environmental Toxicology and Chemistry 37, no. 1 (2017): 247–59. http://dx.doi.org/10.1002/etc.3953.

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Mechkarini, Leila, Tahar Messafer, Abderrahim Bali, and Kamel Silhadi. "Development of an aid tool for evaluation of unsaturated soils permeability." World Journal of Engineering 16, no. 2 (2019): 322–30. http://dx.doi.org/10.1108/wje-08-2018-0260.

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Purpose Prediction models for the unsaturated permeability proposed in the literature are numerous. However, a model may give a good result for a sample of a given soil when it may give a bad result for another sample belonging to the same type of soil. This showed that the choice of a model to complete the permeability curve in the unsaturated state is complex. To facilitate such studies, this paper aims to present a help system capable of defining the mathematical model to the user that best represents the permeability of the soil. Design/methodology/approach The authors have detailed the di

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Ageikina, O. V., V. V. Vorontsov, and R. R. Sufyanov. "Kinetics of filtration consolidation of water-saturated clay soils." Oil and Gas Studies, no. 6 (March 13, 2020): 86–95. http://dx.doi.org/10.31660/0445-0108-2019-6-86-95.

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The relevance of the research processes filtration consolidation due to the place of water-saturated soils in various design solutions related to the exploration, production and transportation of hydrocarbons. It should be noted that the diversity of soils led to the emergence of a wide range of mathematical models, obtained on the basis of generalization of experimental data and various assumptions to simplify engineering calculations. The article presents the results of theoretical and experimental studies of the mathematical model of the consolidation process of a water-saturated porous med

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Tikhonravova, P. I., and A. S. Frid. "Mathematical models of thermal diffusivity in solonetz soils in the Trans-Volga region of Volgograd oblast." Eurasian Soil Science 41, no. 2 (2008): 190–201. http://dx.doi.org/10.1134/s1064229308020105.

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Omar, Maher, Abdallah Shanableh, Mohamed Arab, Khaled Hamad, and Ali Tahmaz. "Advanced Mathematical Models to Predict the Compaction Properties of Coarse-Grained Soils from Various Physical Properties." Geotechnical and Geological Engineering 36, no. 6 (2018): 3467–83. http://dx.doi.org/10.1007/s10706-018-0547-2.

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Panikov, N. S. "Mechanistic mathematical models of microbial growth in bioreactors and in natural soils: Explanation of complex phenomena." Mathematics and Computers in Simulation 42, no. 2-3 (1996): 179–86. http://dx.doi.org/10.1016/0378-4754(95)00127-1.

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Hunt, H. W., A. M. Treonis, D. H. Wall, and R. A. Virginia. "A mathematical model for variation in water-retention curves among sandy soils." Antarctic Science 19, no. 4 (2007): 427–36. http://dx.doi.org/10.1017/s0954102007000703.

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AbstractEquations were developed to predict soil matric potential as a function of soil water content, texture and bulk density in sandy soils. The equations were based on the additivity hypothesis - that water-retention of a whole soil depends on the proportions of several particle size fractions, each with fixed water-retention characteristics. The new model is an advancement over previously published models in that it embodies three basic properties of water-retention curves: a) matric potential is zero at saturation water content, b) matric potential approaches -∞ as water content approach

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Palko, Jukka, and Kjell Weppling. "Modelling the Effects of Acid Sulphate Soils on River Acidity in Finland." Hydrology Research 26, no. 1 (1995): 37–54. http://dx.doi.org/10.2166/nh.1995.0003.

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Acid sulphate (AS) soils cover extensive areas of the coastal plains in western Finland. These soils constitute an environmental hazard due to their ability to release acidity when exposed to atmospheric oxygen. Acidification of soil and water can be reduced or prevented if the factors influencing the release and transport of acidity in AS soils are known. The objective of this study was to develop mathematical models describing the acidity load from AS soils, thus providing tools for accurate soil and water management in the affected areas. The work resulted in a static and a dynamic model fo

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Warne, Michael St J., Diane Heemsbergen, Mike McLaughlin, et al. "Models for the field-based toxicity of copper and zinc salts to wheat in 11 Australian soils and comparison to laboratory-based models." Environmental Pollution 156, no. 3 (2008): 707–14. http://dx.doi.org/10.1016/j.envpol.2008.06.012.

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Gajic, Grozdana, Nikola Zivanovic, and Luka Vukic. "Indicators and degradation mechanisam of loess soil." Bulletin of the Faculty of Forestry, no. 114 (2016): 45–54. http://dx.doi.org/10.2298/gsf1614045g.

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Studies that are presented in this paper were carried out to define the formation criteria of loess soil degradation. Erosion stability analysis of this soil type will be carried out on the basis of its physical and mechanical characteristics. To describe the established relationships between the individual parameters of loess soil, the study uses mathematical model, that is based on experimentally obtained results of soils? physical and mechanical characteristics, From the presented results of geotechnical tests, mathematical models and functional relations between water regime and loess soil

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Machado, Antônio L. T., and Carlos R. Trein. "Draft prediction models for soil engaging tines in two soils of Rio Grande do Sul, Brazil." Engenharia Agrícola 33, no. 1 (2013): 167–75. http://dx.doi.org/10.1590/s0100-69162013000100017.

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The draft forces of soil engaging tines and theoretical analysis compared to existing mathematical models, have yet not been studied in Rio Grande do Sul soils. From the existing models, those which can get the closest fitting draft forces to real measure on field have been established for two of Rio Grande do Sul soils. An Albaqualf and a Paleudult were evaluated. From the studied models, those suggested by Reece, so called "Universal Earthmoving Equation", Hettiaratchi and Reece, and Godwin and Spoor were the best fitting ones, comparing the calculated results with those measured "in situ".

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DuChateau, Paul. "Functional Approach to Nonlinear Models of Water Flow in Soils. Mathematical Modelling: Theory and Applications, Vol. 21." Vadose Zone Journal 9, no. 4 (2010): 1105–6. http://dx.doi.org/10.2136/vzj2010.0067br.

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Baveye, Philippe, and Albert Valocchi. "An evaluation of mathematical models of the transport of biologically reacting solutes in saturated soils and aquifers." Water Resources Research 25, no. 6 (1989): 1413–21. http://dx.doi.org/10.1029/wr025i006p01413.

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Simard, Régis R., and Adrien N'dayegamiye. "Nitrogen-mineralization potential of meadow soils." Canadian Journal of Soil Science 73, no. 1 (1993): 27–38. http://dx.doi.org/10.4141/cjss93-003.

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Abstract (sommario):

An understanding of the mineralization factors in contrasting cultivated soils is necessary for accurate predictions of plant-available N. The objective of this work was to determine the N-mineralization potential and mathematical models that can properly describe the dynamics of the mineralization process in 20 meadow soils from Quebec. The mineralization was monitored over 55.4 wk in a laboratory incubation at 20 °C with intermittent leaching. The cumulative mineralization curves in most soils were characterized by definite lags or a sigmoidal pattern and near-linear release with time after

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Solodovnikov, Denis, Stanislav Shinkarenko, Nikolai Vishnyakov, and Natalya Khavanskaya. "Groundwater of River Floodplains – Intra-Annual Dynamics and Mathematical Models." Natural Systems and Resources, no. 2 (February 2020): 54–63. http://dx.doi.org/10.15688/nsr.jvolsu.2019.2.7.

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Abstract (sommario):

The doctrine of natural geographical zoning is a traditional and well-developed field of physical geography. Zonal landscapes of the planet are perfectly classified and have clear diagnostic signs. The situation is different with intrazonal landscapes. The criteria for their differentiation are not so obvious. Despite the objective differences in the landscapes of floodplains of forest and steppe natural zones, the principles of their differentiation and classification have not yet been eveloped. The most important factor in the functioning of floodplain landscapes is the seasonal dynamics of

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Attom, Mousa F., and Samer Barakat. "Investigation of three methods for evaluating swelling pressure of soils." Environmental and Engineering Geoscience 6, no. 3 (2000): 293–99. http://dx.doi.org/10.2113/gseegeosci.6.3.293.

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Abstract (sommario):

Abstract Determination of the swelling pressure of six types of clayey soils obtained from northern Jordan were measured using three methods, the Free Swell method, Different Pressure method, and the Zero Swell method. These methods show different values in swelling pressure of the soil. For all six soils, the Free Swell method provided the highest value, whereas the Different Pressure method provided the lowest. Discrepancy in the value of swelling pressure among the methods increases with lower initial water content, higher plasticity index, and clay content. This paper compares the three di

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Palamarchuk, Vitalii, and Oleksii Alieksieiev. "MATHEMATICAL MODELS OF HIGH-STARCH MAIZE HYBRIDS OF DIFFERENT GROUND GROUPS." Agriculture and Forestry, no. 1 (April 28, 2020): 28–47. http://dx.doi.org/10.37128/2707-5826-2020-1-3.

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Abstract (sommario):

The article presents the results of mathematical modeling based on the construction and usage of different images of an object, process or system. The research expected to study the dependence of the productivity level and the economically valuable features of corn hybrids in the form of mathematical models. Field studies were carried out during 2011-2017 at the field of research of the Department of Plant, Selection and Bioenergy Crops of SE EF “Kordelivske” of IP NAASU of Vinnytsia National Agrarian University under the conditions of the Forest-Steppe of the Right-Bank, in accordance with th

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Chandrasekhar, Parvathy, Janis Kreiselmeier, Andreas Schwen, et al. "Why We Should Include Soil Structural Dynamics of Agricultural Soils in Hydrological Models." Water 10, no. 12 (2018): 1862. http://dx.doi.org/10.3390/w10121862.

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Abstract (sommario):

Surface soil structure is sensitive to natural and anthropogenic impacts that alter soil hydraulic properties (SHP). These alterations have distinct consequences on the water cycle. In this review, we summarized published findings on the quantitative effects of different agricultural management practices on SHP and the subsequent response of the water balance components. Generally, immediately after tillage, soils show a high abundance of large pores, which are temporally unstable and collapse due to environmental factors like rainfall. Nevertheless, most hydrological modeling studies consider

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