Log in

Relevant bibliographies by topics / Grain size groups of soils / Journal articles

To see the other types of publications on this topic, follow the link: Grain size groups of soils.

Journal articles on the topic 'Grain size groups of soils'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Grain size groups of soils.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Liu, Dawei, Yuanzhi Zhang, Guangliang Zhang, et al. "An Empirical Model to Estimate Abundance of Nanophase Metallic Iron (npFe0) in Lunar Soils." Remote Sensing 12, no. 6 (2020): 1047. http://dx.doi.org/10.3390/rs12061047.

Full text

Abstract:

Lunar soils gradually become mature when they are exposed to a space environment, and nanophase metallic iron (npFe0) generates within them. npFe0 significantly changes the optical properties of lunar soils and affects the interpretation of the remotely sensed data of the lunar surface. In this study, a correlation analysis was conducted between npFe0 abundance and reflectance spectra at short wavelengths for lunar soil samples in four size groups based on their spectral and compositional data, collected by the Lunar Soil Characterization Consortium (LSCC). Results show that 540 nm single scat

APA, Harvard, Vancouver, ISO, and other styles

2

Konechnaya, Olga, Sabine Lüchtrath, Larissa Dsikowitzky та Jan Schwarzbauer. "Optimized microplastic analysis based on size fractionation, density separation and μ-FTIR". Water Science and Technology 81, № 4 (2020): 834–44. http://dx.doi.org/10.2166/wst.2020.173.

Full text

Abstract:

Abstract Microplastic particles have been recognized as global hazardous pollutants in the last few decades pointing to the importance of analyzing and monitoring microplastics, especially in soils and sediments. This study focused on a multi-step approach for microplastic analysis combining grain size fractionation, density separation and identification by μ-FTIR-spectroscopy. Eight widely used polymers (polyethylene (PE), polypropylene (PP), polyvinylchloride (PVC), polystyrol (PS), polyethylenterephthalate (PET), polymethylmethacrylate (PMMA), polyurethane (PU) and polyamide (PA)) were frac

APA, Harvard, Vancouver, ISO, and other styles

3

Dumbrovský, Miroslav, Lucie Larišová, Veronika Sobotková, and Martina Kulihová. "Comparison of Different Texture Analysis for Soil Erodibility Calculations of Loamy and Sandy‑Loam Soils in Moravian Regions." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 67, no. 2 (2019): 383–93. http://dx.doi.org/10.11118/actaun201967020383.

Full text

Abstract:

The subject of this article is a comparison of results of soil texture analysis of loamy and sandy‑loam soils for soil erodibilty calculation using the Casagrande areometric method and results obtained by the laser diffraction method. A comparison was made of 27 samples taken from the Větřkovice locality, and 18 samples taken from the Hustopeče locality. On the basis of laboratory analysis of the soil samples, curves of grain composition were plotted, and the soils were divided into grain‑size groups according to the ratio of individual fractions. For comparison of the results, the soils’ regr

APA, Harvard, Vancouver, ISO, and other styles

4

Mohammed, Athraa Hashim, Asmaa Younus Yahya, and Balqees Abdulwahid Ahmed. "Database for Baghdad Soil Using GIS Techniques." Journal of Engineering 18, no. 12 (2012): 1307–24. http://dx.doi.org/10.31026/j.eng.2012.12.02.

Full text

Abstract:

teen sites Baghdad are made. The sites are divided into two groups, one in Karkh and the other in Rusafa. Assessing the underground conditions can be occurred by drilling vertical holes called exploratory boring into the ground, obtaining soil (disturbed and undisturbed) samples, and testing these samples in a laboratory (civil engineering laboratory /University of Baghdad). From disturbed, the tests involved the grain size analysis and then classified the soil, Atterberg limit, chemical test (organic content, sulphate content, gypsum content and chloride content). From undisturbed samples, th

APA, Harvard, Vancouver, ISO, and other styles

5

Peng, Yu, Xuanming Ding, Yang Xiao, Xin Deng, and Weiting Deng. "Detailed amount of particle breakage in nonuniformly graded sands under one-dimensional compression." Canadian Geotechnical Journal 57, no. 8 (2020): 1239–46. http://dx.doi.org/10.1139/cgj-2019-0283.

Full text

Abstract:

The coexistence of broken and unbroken grains in each size range can disturb the assessment of actual amount of particle breakage. In this study, a series of one-dimensional compression tests were carried out on three kinds of coral sands and a silica sand to clarify the detailed amount of particle breakage for nonuniformly graded sands. Before the compression tests, both coral and silica sand assemblies were divided into different grain-size groups and dyed in different colors, then mixed as nonuniformly graded packings. After the compression, grains of different color in each size range were

APA, Harvard, Vancouver, ISO, and other styles

6

Kilca, Ricardo de Vargas, Fabrício de Araújo Pedron, Gustavo Schwartz, Solon Jonas Longhi, and Gabriel Antônio Deobald. "Soil changes in a subtropical seasonal forest chronosequences in the south of Brazil." Ciência Rural 45, no. 12 (2015): 2174–80. http://dx.doi.org/10.1590/0103-8478cr20150035.

Full text

Abstract:

ABSTRACT: The abandonment of field crops and the vegetation recovery in exhausted soils have been a recently studied subject as a way to assess the forest role on the soil recovering. The aim of this study was assess changes in the chemical(14 variables) and grain size (sand, silt, and clay) soil features in four forests chronosequences grew over abandoned field crops in the edge of the Brazilian Southern plateau, Rio Grande do Sul State. There were selected 25 forests aging from 5 to >100 years old in areas of slopes and highlands where samples of Leptosols and Regosols were collected at 1

APA, Harvard, Vancouver, ISO, and other styles

7

Garcia-Gonzalez, M. T., J. Wierzchos, C. Vizcayno, and R. Rodriguez. "Fine-grained laminated Quaternary sediments in the Ebro Valley (Spain): characteristics and formation." Clay Minerals 31, no. 2 (1996): 173–81. http://dx.doi.org/10.1180/claymin.1996.031.2.03.

Full text

Abstract:

AbstractFine-grained sediments are a major parent material in Ebro Valley soils. During the 1960s, the area was transformed by irrigation and soils underwent serious degradation processes. The sediments have a fine texture, high CaCO3 contents and high salinity-sodicity levels, and contain illite as the most important phyllosilicate in the fine fractions. Two groups of finely laminated organization have been recognized in terms of layer thickness and grain-size distribution. Based on texture, the microstructure of the silty and clayey layers is different, irrespective of their mode of formatio

APA, Harvard, Vancouver, ISO, and other styles

8

Du, Jun, Zhiming Xiong, Xinggang Shen, and Chenchen Li. "Experimental Study on the Effect of Coarse Grain Content on the Dilatancy and Particle Breakage Characteristics of Coarse-Grained Soils." Geofluids 2023 (April 25, 2023): 1–17. http://dx.doi.org/10.1155/2023/2307881.

Full text

Abstract:

The dilatancy deformation and particle breakage effects of coarse-grained soil have a significant influence on the safety and stability of high earth and rock-fill dams. To study the shear deformation and particle breakage characteristics of coarse-grained soil, four groups of soil sample with different coarse grain contents were to conduct consolidated drained triaxial compression tests by DJSZ-150 large-scale triaxial compression test machine. The results showed that the volume of coarse-grained soil changes significantly under deviation stress. The soil samples underwent positive dilatancy

APA, Harvard, Vancouver, ISO, and other styles

9

Papazotos, P., O. Chalkiadaki, E. A. Chatzistamatiou, et al. "HEAVY METALS IN URBAN PARK SOILS FROM ATHENS, GREECE." Bulletin of the Geological Society of Greece 50, no. 4 (2017): 2251. http://dx.doi.org/10.12681/bgsg.14281.

Full text

Abstract:

Urban geochemistry is a scientific discipline which is growing in the recent years mainly because of the environmental impact caused by urbanization. The present study aims to determine the concentrations of potentially harmful elements (PHEs) on surface soils (0-10cm) in Athens parks. Soil sampling was carried out in public park areas within the Athens urban area. Twenty surface soil (0-10cm) samples were collected and the <100μm grain size fraction was analyzed by Flame Atomic Absorption Spectroscopy for Pb, Zn, Ni, Cu, Mn andCr after a strong acid dissolution and partial extraction by 1M

APA, Harvard, Vancouver, ISO, and other styles

10

Simard, R. R., N. Ziadi, M. C. Nolin, and A. N. Cambouris. "Prediction of Nitrogen Responses of Corn by Soil Nitrogen Mineralization Indicators." Scientific World JOURNAL 1 (2001): 135–41. http://dx.doi.org/10.1100/tsw.2001.329.

Full text

Abstract:

Soil nitrogen mineralization potential (Nmin) has to be spatially quantified to enable farmers to vary N fertilizer rates, optimize crop yields, and minimize N transfer from soils to the environment. The study objectives were to assess the spatial variability in soil Nminpotential based on clay and organic matter (OM) contents and the impact of grouping soils using these criteria on corn grain (Zea mays L.) yield, N uptake response curves to N fertilizer, and soil residual N. Four indicators were used: OM content and three equations involving OM and clay content. The study was conducted on a 1

APA, Harvard, Vancouver, ISO, and other styles

11

ΤΣΙΡΑΜΠΙΔΗΣ, Α., and Θ. ΠΑΠΑΛΙΑΓΚΑΣ. "Mineralogical composition and physical characteristics of marly soils from Heraklion Crete." Bulletin of the Geological Society of Greece 34, no. 3 (2001): 851. http://dx.doi.org/10.12681/bgsg.17097.

Full text

Abstract:

The mainly white-yellow marly soils studied present medium degree of consolidation and induration. The predominant grain size of the non - carbonate constituents is that of silt varying from 34 to 64%. According to the textural classification of soils of the SSDS the samples are mainly silty-clay loams with moisture capacity 30-40%. In the untreated samples in decreasing abundance the following minerals predominate: calcite (31-59%), clay minerals (20-34%) and quartz (12-20%). In the clay fraction (<2μπι) in decreasing abundance the following clay minerals (in discrete and interstratified p

APA, Harvard, Vancouver, ISO, and other styles

12

Li, Yanhong, Huimei Wang, Wenjie Wang, Lei Yang, and Yuangang Zu. "Ectomycorrhizal Influence on Particle Size, Surface Structure, Mineral Crystallinity, Functional Groups, and Elemental Composition of Soil Colloids from Different Soil Origins." Scientific World Journal 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/698752.

Full text

Abstract:

Limited data are available on the ectomycorrhizae-induced changes in surface structure and composition of soil colloids, the most active portion in soil matrix, although such data may benefit the understanding of mycorrhizal-aided soil improvements. By using ectomycorrhizae (Gomphidius viscidus) and soil colloids from dark brown forest soil (a good loam) and saline-alkali soil (heavily degraded soil), we tried to approach the changes here. For the good loam either from the surface or deep soils, the fungus treatment induced physical absorption of covering materials on colloid surface with nons

APA, Harvard, Vancouver, ISO, and other styles

13

PERSSON, T., and S. KVÆRNØ. "Impact of projected mid-21st century climate and soil extrapolation on simulated spring wheat grain yield in Southeastern Norway." Journal of Agricultural Science 155, no. 3 (2016): 361–77. http://dx.doi.org/10.1017/s0021859616000241.

Full text

Abstract:

SUMMARYThe effects of soil variability on regional crop yield under projected climate change are largely unknown. In Southeastern Norway, increased temperature and precipitation are projected for the mid-21st century. Crop simulation models in combination with scaling techniques can be used to determine the regional pattern of crop yield. In the present paper, the CSM-CROPSIM-CERES-Wheat model was applied to simulate regional spring wheat yield for Akershus and Østfold counties in Southeastern Norway. Prior to the simulations, parameters in the CSM-CROPSIM-CERES-Wheat model were calibrated for

APA, Harvard, Vancouver, ISO, and other styles

14

Tomczak, Arkadiusz, and Tomasz Jelonek. "Radial variation in the wood properties of Scots pine (Pinus sylvestris L.) grown on former agricultural soil." Forest Research Papers 74, no. 2 (2013): 171–77. http://dx.doi.org/10.2478/frp-2013-0017.

Full text

Abstract:

Abstract The soil of former farmland greatly differs from forest soil, and significantly influences tree growth and development compared with other site factors. The effect may also be reflected indirectly in radial variability of wood. This study compared radial variation of wood density, compressive strength along the grain and static bending strength of wood of Scots pine trees growing on former farmland and forest soils. The analyses were conducted in eight mature pine stands. On the basis of the stand description, four stands were classified as growing on forest soil (L) and four as growi

APA, Harvard, Vancouver, ISO, and other styles

15

Tomczak, Arkadiusz, and Tomasz Jelonek. "Radial variation in the wood properties of Scots pine (Pinus sylvestris L.) grown on former agricultural soil." Forest Research Papers 74 (2) (March 1, 2013): 171–77. https://doi.org/10.2478/frp-2013-0017.

Full text

Abstract:

The soil of former farmland greatly differs from forest soil, and significantly influences tree growth and development compared with other site factors. The effect may also be reflected indirectly in radial variability of wood. This study compared radial variation of wood density, compressive strength along the grain and static bending strength of wood of Scots pine trees growing on former farmland and forest soils. The analyses were conducted in eight mature pine stands. On the basis of the stand description, four stands were classified as growing on forest soil (L) and four as growing on for

APA, Harvard, Vancouver, ISO, and other styles

16

Vlasova, Irina E., Vasily O. Yapaskurt, Alexei A. Averin, et al. "Nuclear Melt Glass from Experimental Field, Semipalatinsk Test Site." Energies 15, no. 23 (2022): 9121. http://dx.doi.org/10.3390/en15239121.

Full text

Abstract:

Investigation of shocked materials provides unique information about behavior of substances in extreme thermodynamic conditions. Near surface nuclear tests have induced multiple transformations of affected soils. Examination of nuclear glasses and relics of entrapped minerals provides a unique database on their behavior under an intense temperature flash. In this work, several types of nuclear fallout particles from historic tests at the Semipalatinsk test site are investigated using complementary analytical methods. Distribution of radionuclides in all types of samples is highly heterogeneous

APA, Harvard, Vancouver, ISO, and other styles

17

de Vries, A. J. "The semi-arid environment of Curaçao: a geochemical soil survey." Netherlands Journal of Geosciences - Geologie en Mijnbouw 79, no. 4 (2000): 479–94. http://dx.doi.org/10.1017/s0016774600021971.

Full text

Abstract:

AbstractA geochemical soil survey was carried out on the island of Curaçao in October 1992 as part of an overall geochemical characterisation of the three Leeward islands of the Netherlands Antilles. The aim of this soil survey was to provide systematic geochemical data of the rural soils of Curaçao for characterisation, geochemical mapping and environmental application. A total of 122 samples was collected from the topsoils (upper 0.1 m) within a rectangular grid (2 km2). All samples were sieved to a grain size of < 2 mm and analysed for 24 elements by ICP-AES, after decomposition with hot

APA, Harvard, Vancouver, ISO, and other styles

18

Krettek, Agnes, Ludger Herrmann, and Thilo Rennert. "Podzolisation affects the spatial allocation and chemical composition of soil organic matter fractions." Soil Research 58, no. 8 (2020): 713. http://dx.doi.org/10.1071/sr20164.

Full text

Abstract:

Podzols are soils that display a unique vertical distribution of soil organic matter (SOM). We hypothesise that podzolisation, as a pedogenetic process, influences or even controls content, allocation and quality of SOM. We determined soil organic carbon (SOC) and nitrogen (N) contents in six SOM fractions obtained from mineral horizons of five soils with increasing degree of podzolisation: sand and stable aggregates (S + A), particulate organic matter (POM) &gt; 63 µm and &lt;63 µm, silt and clay (s + c), resistant SOC and dissolved organic matter. We applied infrared spectroscopy to

APA, Harvard, Vancouver, ISO, and other styles

19

Parzentny, Henryk R., and Leokadia Róg. "The Role of Mineral Matter in Concentrating Uranium and Thorium in Coal and Combustion Residues from Power Plants in Poland." Minerals 9, no. 5 (2019): 312. http://dx.doi.org/10.3390/min9050312.

Full text

Abstract:

Based on the results of tests on feed coal from the Lublin Coal and Upper Silesian Coal Basin and its fly ash and slag carried out using X-ray diffraction and X-ray fluorescence analysis, atomic emission spectroscopy, and scanning electron microscopy, it was found that in feeds, coal Th is associated with phosphates and U with mineral matter. The highest Th content was found in anhedral grains of monazite and in Al-Si porous particles of fly ash of <0.05 mm size; whereas in the slag, Th is concentrated in the massive Al-Si grains and in ferrospheres. U is mainly concentrated in the Al-Si su

APA, Harvard, Vancouver, ISO, and other styles

20

Dumych, V., D. Bova, and O. Krupych. "RESPONSE OF MAIZE HYBRIDS TO TILLAGE SYSTEMS IN WESTERN UKRAINE." Technical and technological aspects of development and testing of new machinery and technologies for agriculture of Ukraine 1, no. 32(46) (2023): 162–72. http://dx.doi.org/10.31473/2305-5987-2023-1-32(46)-14.

Full text

Abstract:

Summary The purpose of research: Evaluation of the impact of soil tillage systems on grain productivity and efficiency of growing new corn hybrids in the soil and climatic conditions of western Ukraine. Research methods: Field trials were conducted in Western Ukraine on fields with sod-podzolic carbonate-gley soils. The total experimental field area of 6 ha was divided into 15 experimental plots with three tillage systems (conventional, conservation, mulching) and five maize hybrids of different indices and maturity groups («Ajax» (FAO 210), «Amaros» (FAO 230), «Danubio» (FAO 260),» DSK 3730»

APA, Harvard, Vancouver, ISO, and other styles

21

Wojtasik, Mieczysław, and Dawid Szatten. "Granulometryczny wskaźnik gęstości naturalnej gleb = Granulometric coefficient of natural bulk density of soil." Journal of Education, Health and Sport 5, no. 5 (2015): 76–85. https://doi.org/10.5281/zenodo.17444.

Full text

Abstract:

<strong>Wojtasik Mieczysław, Szatten Dawid. </strong><strong>Granulometryczny wskaźnik gęstości naturalnej gleb = </strong><strong>Granulometric coefficient of natural bulk density of soil. </strong><strong>Journal of Education, Health and Sport. </strong><strong>2015;5(5):76-85. ISSN 2391-8306. DOI</strong> <strong>10.5281/zenodo.17444</strong> <strong>http://ojs.ukw.edu.pl/index.php/johs/article/view/2015%3B5%285%29%3A76-85</strong> <strong>https://pbn.nauka.gov.pl/works/559147</strong> <strong>http://dx.doi.org/10.5281/zenodo.17444</strong> <strong>Formerly Journal of Health Sciences. ISSN

APA, Harvard, Vancouver, ISO, and other styles

22

Leceta, Fernando, Christoph Binder, Christian Mader, et al. "The impact of agriculture on tropical mountain soils in the western Peruvian Andes: a pedo-geoarchaeological study of terrace agricultural systems in the Laramate region (14.5° S)." SOIL 10, no. 2 (2024): 727–61. http://dx.doi.org/10.5194/soil-10-727-2024.

Full text

Abstract:

Abstract. This integrated pedo-geoarchaeological study focuses on three abandoned pre-Hispanic terrace agricultural systems near Laramate in the southern Andes of Peru (14.5° S), aiming to unravel the pedological and land-use history of the region, which served as a significant agricultural hub during pre-Hispanic times. The key objectives of the investigation involved contextualizing the former agricultural management system within its geomorphological and palaeoecological framework and assessing the impact of agricultural practices on soil development and quality by comparing non-irrigated a

APA, Harvard, Vancouver, ISO, and other styles

23

Frick, Dennis, and Martin Achmus. "A model test study on the parameters affecting the cyclic lateral response of monopile foundations for offshore wind turbines embedded in non-cohesive soils." Wind Energy Science 7, no. 4 (2022): 1399–419. http://dx.doi.org/10.5194/wes-7-1399-2022.

Full text

Abstract:

Abstract. During their service life, monopiles supporting offshore wind turbines are subjected to a large number of lateral cyclic loads resulting from complex environmental conditions such as wind and waves varying in amplitude, direction, load eccentricity and frequency. The consequential accumulation of displacements and rotations of the foundation structure with cyclic loading is one key concern in the design of monopiles. Nevertheless, the relevant offshore guidelines do not provide suitable procedures for predicting such deformations. Although there are several methods for this purpose i

APA, Harvard, Vancouver, ISO, and other styles

24

Manukyan, Irina, Inna Satcaeva, and Alana Mal'dzigova. "BAKING QUALITY ASSESSMENT OF PROMISING WINTER SOFT WHEAT BREEDING MATERIAL." Bulletin of KSAU, no. 6 (January 22, 2025): 226–33. https://doi.org/10.36718/1819-4036-2023-6-226-233.

Full text

Abstract:

The purpose of the study is to evaluate the baking qualities of winter soft wheat breeding material. Objectives: to identify new promising breeding lines of winter soft wheat for state variety testing and potential use in the production of bakery products. The object of research is grain, flour and bakery products from promising varieties of winter soft wheat Verita (Slovakia), Areal (Ukraine), Manau (Russia), Dorota (France). The studies were carried out on the experimental field in 2019–2022 in the conditions of the forest-steppe zone of the Central Caucasus. The soils of the experimental si

APA, Harvard, Vancouver, ISO, and other styles

25

Wang, Tao, Baoqin Wen, Za Kan, and Jingbin Li. "Wear Behavior of Different Materials Applied on Horizontal Mixer Blades Used in the Processing of Total Mixed Rations." Transactions of the ASABE 62, no. 6 (2019): 1743–53. http://dx.doi.org/10.13031/trans.13645.

Full text

Abstract:

Abstract. A horizontal mixer can realize the cutting and mixing of coarse and fine feeds and achieve the purpose of scientific feeding. Studying the wear resistance of the mixer blades can improve the service life of a horizontal mixer. The wear performance of blades made of three different materials (manganese steel, tool steel, and spring steel) was studied under laboratory conditions and working conditions. In laboratory conditions, the wear scar morphology and surface elements were analyzed by means of three-dimensional topography, scanning electron microscopy, and energy spectrum analysis

APA, Harvard, Vancouver, ISO, and other styles

26

Naydyonova, O., and L. Vorotyntseva. "Agrogenic transformation of the common black soil under long-term irrigation with mineralized waters." Agroecological journal, no. 2 (May 21, 2015): 47–53. http://dx.doi.org/10.33730/2077-4893.2.2015.271485.

Full text

Abstract:

We studied the influence of irrigation with saline water on the properties of ordinary chernozem depending on the duration of irrigation. An increase of the degree of adverse changes in the physical, physical-chemical, chemical and biological properties of the soil accordingly increasing duration of irrigation is shown. The processes of salinization, alkalinization and soil compaction enhance mineralogy and grain size distribution of soil changes. Irrigation with saline water for 20 years has led to an increase in the total content of water-soluble salts in soil’s layer 0–25 cm from 0.07% to 0

APA, Harvard, Vancouver, ISO, and other styles

27

Kryvenko, A., and S. Burykina. "Efficiency of forms and terms of zinc application in the winter wheat fields." Agrobìologìâ, no. 2(142) (December 22, 2018): 25–33. http://dx.doi.org/10.33245/2310-9270-2018-142-2-25-33.

Full text

Abstract:

To improve the technology of winter wheat cultivation it becomes more relevant to discuss the issue of enhancing crop microelement nutrition, which is very important when mineral fertilizers are applied at a higher rate than the one accepted in the zone. Chornozem (black) soils in general, and southern ones in particular, have a neutral or slight alkaline response, i.e. most of the microelements are slow movable and in fact are not available for the plants. The efficiency of the microelement application uppermost affected by the form they are in. Recent experiments prove that the most efficien

APA, Harvard, Vancouver, ISO, and other styles

28

Palamarchuk, Vitalii, Vadym Krychkovskyi, and Mykola Neilyk. "QUALITY INDICATORS OF CORN GRAIN DEPENDING ON THE FRACTIONAL COMPOSITION AND DEPTH OF WRAPPING." Agriculture and Forestry, no. 2 (33) (May 31, 2024): 100–112. https://doi.org/10.37128/2707-5826-2024-2-9.

Full text

Abstract:

The article presents the results of research on the influence of the fractional composition of the grain of corn hybrids and the depth of its wrapping on quality indicators. The soils of the experimental site are of the chernozem type, with a medium-loamy mechanical composition. Corn hybrids DKS 2971, DKS 2960, DKS 3795, DKS 3472, DK 315 and DKS 4082 of different maturity groups were used for research. There are three seed fractions (large, medium and small) and three seed wrapping depths (4-5 cm, 7-8 cm and 10-11 cm) in the research. The formation of endosperm in corn largely depends on a num

APA, Harvard, Vancouver, ISO, and other styles

29

Wojtasik, Mieczysław, and Dawid Szatten. "Kategorie optymalnych dla roślin gęstości gleb = Categories of optimal bulk density of soils for plants." Journal of Education, Health and Sport 5, no. 7 (2015): 301–13. https://doi.org/10.5281/zenodo.20065.

Full text

Abstract:

<strong>Wojtasik Mieczysław, Szatten Dawid. </strong><strong>Kategorie optymalnych dla roślin gęstości gleb = </strong><strong>Categories of optimal bulk density of soils for plants. </strong><strong>Journal of Education, Health and Sport. </strong><strong>2015;5(7):301-313</strong><strong>.</strong><strong> ISSN 2391-8306. DOI </strong><strong>10.5281/zenodo.20065</strong> <strong>http</strong><strong>://</strong><strong>ojs</strong><strong>.</strong><strong>ukw</strong><strong>.</strong><strong>edu</strong><strong>.</strong><strong>pl</strong><strong>/</strong><strong>index</strong><strong>.

APA, Harvard, Vancouver, ISO, and other styles

30

Wen, Renjie, Cai Tan, Yong Wu, and Chen Wang. "Grain Size Effect on the Mechanical Behavior of Cohesionless Coarse-Grained Soils with the Discrete Element Method." Advances in Civil Engineering 2018 (June 26, 2018): 1–6. http://dx.doi.org/10.1155/2018/4608930.

Full text

Abstract:

Biaxial compression tests with the same specimen size and different maximum grain sizes were simulated for coarse-grained soils using the discrete element method to study the influence of grain size on the mechanical properties and force chain. The maximum grain sizes were 40, 20, 10, and 5 mm, respectively. The grading with self-similar fractal structure in mass is designed to ensure the same pore structure for soils. The shear strength increased with the increase in maximum grain size. Evident increase in shear strength and significant size effect were observed when the ratio of the specimen

APA, Harvard, Vancouver, ISO, and other styles

31

Zhang, Feng, Shihang Wang, Mingsong Zhao, Falv Qin, and Xiaoyu Liu. "Regional simulation of soil organic carbon dynamics for dry farmland in Northeast China using the CENTURY model." PLOS ONE 16, no. 1 (2021): e0245040. http://dx.doi.org/10.1371/journal.pone.0245040.

Full text

Abstract:

Soil organic carbon content has a significant impact on soil fertility and grain yield, making it an important factor affecting agricultural production and food security. Dry farmland, the main type of cropland in China, has a lower soil organic carbon content than that of paddy soil, and it may have a significant carbon sequestration potential. Therefore, in this study we applied the CENTURY model to explore the temporal and spatial changes of soil organic carbon (SOC) in Jilin Province from 1985 to 2015. Dry farmland soil polygons were extracted from soil and land use layers (at the 1:1,000,

APA, Harvard, Vancouver, ISO, and other styles

32

Fredlund, Murray D., D. G. Fredlund, and G. Ward Wilson. "An equation to represent grain-size distribution." Canadian Geotechnical Journal 37, no. 4 (2000): 817–27. http://dx.doi.org/10.1139/t00-015.

Full text

Abstract:

The grain-size distribution is commonly used for soil classification; however, there is also potential to use the grain-size distribution as a basis for estimating soil behaviour. For example, much emphasis has recently been placed on the estimation of the soil-water characteristic curve. Many methods proposed in the literature use the grain-size distribution as a starting point to estimate the soil-water characteristic curve. Two mathematical forms are presented to represent grain-size distribution curves, namely, a unimodal form and a bimodal form. The proposed equations provide methods for

APA, Harvard, Vancouver, ISO, and other styles

33

Alghamdi, Salem. "Estimation of genetic diversity among faba bean accessions based on agro-morphological characters using multivariate analysis technique." Pakistan Journal of Agricultural Sciences 60, no. 02 (2023): 211–18. http://dx.doi.org/10.21162/pakjas/23.60.

Full text

Abstract:

Faba bean is an important grain legume crop in the world. Use of plant genetic breeding resources can help develop high yield and stress tolerant plant genotypes. In this study, genetic diversity of 144 faba bean accessions, collected from different parts of the world growing under Saudi Arabian conditions, was evaluated based on agro morphological basis. A wide range of variability was recorded for all the qualitative characters except growth habit (determinate 1.3% indeterminate 98.7%) and pod shattering (non-shattering 99.4%; shattering 0.6%). A high level of diversity was recorded in the q

APA, Harvard, Vancouver, ISO, and other styles

34

Mu, Liyuan, Hongyin Zhou, Ke Yang, et al. "Effect of Biochar-Based Organic Fertilizer on the Growth of Maize in Cadmium-Contaminated Soil." Agriculture 15, no. 5 (2025): 447. https://doi.org/10.3390/agriculture15050447.

Full text

Abstract:

China is vigorously promoting green, environmentally friendly, and sustainable agricultural practices, with a strong emphasis on the efficient recycling of biomass resources. In particular, in the field of fertilizer use, the country has clearly stated the need to reduce the application of chemical fertilizers, improve fertilizer use efficiency, and promote the substitution of chemical fertilizers with organic fertilizers. This study aims to explore the effects of different application rates of biochar-based organic fertilizers on soil-available nutrients, corn growth, and the inhibition of ca

APA, Harvard, Vancouver, ISO, and other styles

35

Yang, Hong, Harianto Rahardjo, Eng-Choon Leong, and D. G. Fredlund. "Factors affecting drying and wetting soil-water characteristic curves of sandy soils." Canadian Geotechnical Journal 41, no. 5 (2004): 908–20. http://dx.doi.org/10.1139/t04-042.

Full text

Abstract:

Drying and wetting soil-water characteristic curves (SWCCs) for five sandy soils are investigated using a Tempe pressure cell and capillary rise open tube. The test data are fitted to two SWCC equations using a least-squares algorithm. The obtained fitting parameters and some hysteretic behaviour are discussed and correlated with grain-size distribution parameters. A concept of total hysteresis is proposed to quantify the hysteresis of SWCC. The measured SWCC for one soil is also compared with the SWCC estimated from its grain-size distribution. The SWCC was also obtained at a high dry density

APA, Harvard, Vancouver, ISO, and other styles

36

XU, YONGFU, and SONGYU LIU. "FRACTAL CHARACTER OF GRAIN-SIZE DISTRIBUTION OF EXPANSIVE SOILS." Fractals 07, no. 04 (1999): 359–66. http://dx.doi.org/10.1142/s0218348x99000360.

Full text

Abstract:

Fractal mass distribution of expansive soil grains is studied in this paper. It is found that there is different fractal mass distribution exponent of the grain-size distribution for different genesis of expansive soils. The expansiveness, physical properties and mechanical properties of expansive soils can be quantitatively described by the fractal mass distribution exponent of grain-size distribution of expansive soils. In consolidated tests, the fractal mass distribution exponent increases with increases in consolidated pressure, as well as increases in confining pressure in triaxial tests.

APA, Harvard, Vancouver, ISO, and other styles

37

Radzii, Volodymyr. "Modern methods of grain size distribution of soils." Visnyk of the Lviv University. Series Geography, no. 44 (November 28, 2013): 302–8. http://dx.doi.org/10.30970/vgg.2013.44.1236.

Full text

Abstract:

Grain size distribution of soil determines much of water and physical properties of the soil mass. However, it defines ecological functions and morphological memory of soils in the study of their genesis, evolution and use. This article describes the main methods of particle size analysis and suggests the modern methods used increasingly in the research in soil science, geology, chemical, pharmaceutical and other industries. Key words: particle size distribution of soil, sedimentograph, laser diffraction.

APA, Harvard, Vancouver, ISO, and other styles

38

Tarnawski, Vlodek R., and Bernhard Wagner. "On the prediction of hydraulic conductivity of frozen soils." Canadian Geotechnical Journal 33, no. 1 (1996): 176–80. http://dx.doi.org/10.1139/t96-033.

Full text

Abstract:

This paper describes a mathematical model for predicting the hydraulic conductivity of partially frozen soils on the basis of limited input data such as grain size distribution and bulk density or porosity. A new model is based on an analogy for the hydraulic conductivity of frozen and unfrozen soils and models for the estimation of hydraulic properties of soils and unfrozen water content. Campbell's model was used for prediction of soil-water characteristics from limited data, while unfrozen water content was obtained from two models (by P.J. Williams and D.M. Anderson) applied to two differe

APA, Harvard, Vancouver, ISO, and other styles

39

Bernard, B., U. Kueppers, and H. Ortiz. "Revisiting the statistical analysis of pyroclast density and porosity data." Solid Earth 6, no. 3 (2015): 869–79. http://dx.doi.org/10.5194/se-6-869-2015.

Full text

Abstract:

Abstract. Explosive volcanic eruptions are commonly characterized based on a thorough analysis of the generated deposits. Amongst other characteristics in physical volcanology, density and porosity of juvenile clasts are some of the most frequently used to constrain eruptive dynamics. In this study, we evaluate the sensitivity of density and porosity data to statistical methods and introduce a weighting parameter to correct issues raised by the use of frequency analysis. Results of textural investigation can be biased by clast selection. Using statistical tools as presented here, the meaningfu

APA, Harvard, Vancouver, ISO, and other styles

40

Nadj, Laslo. "Characterization of sand boils with grading entropy." Zbornik Matice srpske za prirodne nauke, no. 122 (2012): 73–88. http://dx.doi.org/10.2298/zmspn1222073n.

Full text

Abstract:

Grain size and grain distribution by size are dominant factors determining soil behaviour. The shape and position of a grain distribution curve contain implicit information about the propensity of sand boiling or piping at flood conditions. The author used 1040-grain distribution curves taken from 12 sand boil locations to study the relationship between sand boils, hydraulic soil failures and entropy. The results have justified the hypotheses and indicated some fairly important details for practical consideration. Calculating grain distribution entropy is not ?magic? with mathematics: it simpl

APA, Harvard, Vancouver, ISO, and other styles

41

Chaney, RC, KR Demars, SA Raschke, and RD Hryciw. "Grain-Size Distribution of Granular Soils by Computer Vision." Geotechnical Testing Journal 20, no. 4 (1997): 433. http://dx.doi.org/10.1520/gtj10410j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Yong, Li, Huang Chengmin, Wang Baoliang, Tian Xiafei, and Liu Jingjing. "A unified expression for grain size distribution of soils." Geoderma 288 (February 2017): 105–19. http://dx.doi.org/10.1016/j.geoderma.2016.11.011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

D'Andrea, Robert, and Fred Kofi Boadu. "Hydraulic Conductivity of Soils from Grain-Size Distribution:New Models." Journal of Geotechnical and Geoenvironmental Engineering 127, no. 10 (2001): 899–900. http://dx.doi.org/10.1061/(asce)1090-0241(2001)127:10(899).

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Zakharov, A. V., and S. E. Makhover. "THE EFFECT GRAIN-SIZE COMPOSITION ON THERMAL CONDUCTIVITY OF SANDY SOILS." Construction and Geotechnics 11, no. 2 (2020): 19–27. http://dx.doi.org/10.15593/2224-9826/2020.2.02.

Full text

Abstract:

Today the issue of energy saving is acute. The main sources of energy are radiant energy of the Sun, wind energy, energy of moving water. Therefore, the issue of solving alternative energy sources is relevant. The article aims to solve the problem by using low-potential heat of the soil mass by means of energy-efficient building constructions - foundations. It is necessary to know the thermal characteristics of soils for this. At the moment, methods for determining the thermophysical properties of inert materials with subsequent practical application in the field of construction have been wide

APA, Harvard, Vancouver, ISO, and other styles

45

Tortyk, Mykola. "Assessment of physical alluvial soils of floodplains of lower part of Dniester River." Visnyk of the Lviv University. Series Geography, no. 44 (November 28, 2013): 364–71. http://dx.doi.org/10.30970/vgg.2013.44.1244.

Full text

Abstract:

The results of studies of physical condition of alluvial floodplain soils of Lower Dniester River and its component Turunchuk Island are given. Key words: alluvial soils, grain size, microagregative composition, density, structure, water-physical properties.

APA, Harvard, Vancouver, ISO, and other styles

46

FUKUMOTO, Takeaki. "A study on the grain size distribution of various soils." Doboku Gakkai Ronbunshu, no. 475 (1993): 11–18. http://dx.doi.org/10.2208/jscej.1993.475_11.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Cil, Mehmet B., Changbum Sohn, and Giuseppe Buscarnera. "DEM Modeling of Grain Size Effect in Brittle Granular Soils." Journal of Engineering Mechanics 146, no. 3 (2020): 04019138. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001713.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Ter-Martirosyan, Zaven, Anatoly Mirnyy, and Armen Ter-Martirosyan. "The Mechanical Properties of Soils with Uneven Grain-Size Distribution." Advanced Materials Research 1073-1076 (December 2014): 1689–96. http://dx.doi.org/10.4028/www.scientific.net/amr.1073-1076.1689.

Full text

Abstract:

This issue deals with peculiarities of stress-strain state forming in a representative volume of inhomogeneous soil. Analytic solutions for describing such stress states and obtaining equivalent mechanical values for such massive are given. Basing on the performed triaxial laboratory tests the impact of diameter ratio, percentage, and contact between particles on mechanical properties of a mixture is estimated. As a conclusion some recommendations on using the research results in practical geotechnical engineering are given. The classification of inhomogeneous soils, based on granulometric dat

APA, Harvard, Vancouver, ISO, and other styles

49

Mirnyy, AYu, YeA Gaykov, and AO Zubov. "NON-COHESIVE SOILS’ COMPRESSIBILITY AND UNEVEN GRAIN-SIZE DISTRIBUTION RELATION." Mordovia University Bulletin 26, no. 1 (2016): 012–19. http://dx.doi.org/10.15507/0236-2910.026.201601.012-019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Boadu, Fred Kofi. "Hydraulic Conductivity of Soils from Grain-Size Distribution: New Models." Journal of Geotechnical and Geoenvironmental Engineering 126, no. 8 (2000): 739–46. http://dx.doi.org/10.1061/(asce)1090-0241(2000)126:8(739).

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!