Academic literature on the topic 'Stability of soil aggregates'

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Journal articles on the topic "Stability of soil aggregates"

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Thai, Saven, Tomáš Davídek, and Lenka Pavlů. "Causes clarification of the soil aggregates stability on mulched soil." Soil and Water Research 17, No. 2 (2022): 91–99. http://dx.doi.org/10.17221/151/2021-swr.

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Soil aggregates have great effects on soil properties and soil functions. Mulching (organic inputs) has been known as a factor influencing soil aggregate stability. Our study aimed to reveal the causes of the higher stability of soil aggregates under organic mulches. The primary soil characteristics such as organic carbon (Cox), humus quality (E4/E6), potential wettability index (PWI), and aromaticity index (iAR) were determined. The Cox was measured using rapid dichromate oxidation, and E4/E6 was measured using the UV-Vis spectrophotometry. The PWI and iAR were determined according to the int
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Gijsman, AJ, and RJ Thomas. "Aggregate size distribution and stability of an oxisol under legume-based and pure grass pastures in the eastern Colombian savannas." Soil Research 33, no. 1 (1995): 153. http://dx.doi.org/10.1071/sr9950153.

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This study evaluated soil aggregate size distribution and stability of an Oxisol under improved grass-only or grass-legume pastures, established in previously native savanna. Three grass-legume combinations were included at various stocking rates. In all treatments and soil layers, soils were well aggregated, having more than 90% of their weight in macroaggregates (>250 �m). The addition of legumes to pastures did not affect the soil aggregate size distribution, although aggregates showed somewhat more stability against slaking. An increase in stocking rate negatively affected both average
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Ushkova, D. A., U. A. Konkina, I. V. Gorepekin, D. I. Potapov, E. V. Shein, and G. N. Fedotov. "Stability of Arable Soil Aggregates: Experimental Determination and Normative Characteristics." Почвоведение, no. 2 (February 1, 2023): 203–10. http://dx.doi.org/10.31857/s0032180x22600834.

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Soil stability in modern soil physics is divided into two directions: water stability and resistance to mechanical influences (compression, wedging). Both soil properties in water-saturated soil are based on the rupture of intra-aggregate interparticle bonds, however, no standard physically justified values have been proposed to characterize the stability of aggregates. The purpose of the article is to substantiate the physical concept of stability of soil aggregates and to propose a single methodological method for quantifying stability as a normative soil characteristic. A high-performance m
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Hanna Radziuk and Marcin Świtoniak. "Time of aggregate destruction as a parameter of soil water stability within an agricultural hummocky moraine landscape in northern Poland." Bulletin of Geography. Physical Geography Series, no. 23 (December 6, 2022): 49–62. http://dx.doi.org/10.12775/bgeo-2022-0009.

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Slaking is a rapid wetting of soil aggregates that affects their stability in the face of the effects of water. The aggregate’s stability has an indirect influence on soil functioning through its minimising of soil erosion. Testing slaking is very simple, does not need additional complicated equipment and could be done for any point. Testing was performed for natural air-dry aggregates (7–10 mm) sampled from the arable layers of four different types of soils within a young hummocky moraine landscape: Eutric Regosol (Protocalcic), Haplic Luvisol (Protocalcic), Albic Luvisol, Mollic Gleysol. The
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Zádorová, T., O. Jakšík, R. Kodešová, and V. Penížek. " Influence of terrain attributes and soil properties on soil aggregate stability." Soil and Water Research 6, No. 3 (2011): 111–19. http://dx.doi.org/10.17221/15/2011-swr.

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  The study on the relationship between the soil aggregates stability assessed using water stable aggregate (WSA) index and the selected terrain and soil properties was performed on a morphologically diverse study site in Chernozem soil region of Southern Moravia. Soil analyses and detailed digital elevation model processing were the main methods adopted in the study. The soil structure stability is negatively influenced by the soil material removal from the steep parts of the back-slope and re-deposition of the mineral loess material at the base of the slope. The highest aggregates s
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Li, Ying, Zhanming Ma, Yutao Liu, et al. "Variation in Soil Aggregate Stability Due to Land Use Changes from Alpine Grassland in a High-Altitude Watershed." Land 12, no. 2 (2023): 393. http://dx.doi.org/10.3390/land12020393.

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Land use change affects soil aggregate composition and stability, which impacts soil structure and health. To reveal how land use change impacted soil aggregates of alpine grassland in a high-altitude watershed, soil samples from 161 sites including alpine grassland, cropland and abandoned land were selected to measure and analyze the distribution of aggregate fractions (macro-aggregates, micro-aggregates, silt+clay), soil aggregate stability (mean weight diameter, geometric mean diameter, fractal dimension, etc.) and related soil properties (soil organic carbon content, soil particle composit
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Das, Bappa, Debashis Chakraborty, Vinod K. Singh, Pramila Aggarwal, Ravender Singh, and Brahm S. Dwivedi. "Effect of Organic Inputs on Strength and Stability of Soil Aggregates Under Rice-Wheat Rotation." International Agrophysics 28, no. 2 (2014): 163–68. http://dx.doi.org/10.2478/intag-2014-0004.

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Abstract The study aims to elucidate the impact of organic inputs on strength and structural stability of aggregates in a sandy loam soil. Tensile strength, friability and water stability of aggregates, and the carbon contents in bulk soil and in large macro (>2 mm), small macro (0.25-2 mm), micro (0.053-0.25 mm) and silt+clay size (<0.053) aggregates were evaluated in soils from a long-term experiment with rice-wheat rotation at Modipuram, India, with different sources and amounts of organic C inputs as partial substitution of N fertilizer. Addition of organic substrates significantly i
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Riveras-Muñoz, Nicolás, Steffen Seitz, Kristina Witzgall, et al. "Biocrust-linked changes in soil aggregate stability along a climatic gradient in the Chilean Coastal Range." SOIL 8, no. 2 (2022): 717–31. http://dx.doi.org/10.5194/soil-8-717-2022.

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Abstract. Biological soil crusts (biocrusts) composed of cyanobacteria, bacteria, algae, fungi, lichens, and bryophytes stabilize the soil surface. This effect has mainly been studied in arid climates, where biocrusts constitute the main biological agent to stabilize and connect soil aggregates. Besides, biocrusts are an integral part of the soil surface under Mediterranean and humid climate conditions, mainly covering open spaces in forests and on denuded lands. They often develop after vegetation disturbances, when their ability to compete with vascular plants increases, acting as pioneer co
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Yang, Songyu, Boris Jansen, Samira Absalah, Rutger L. van Hall, Karsten Kalbitz, and Erik L. H. Cammeraat. "Lithology- and climate-controlled soil aggregate-size distribution and organic carbon stability in the Peruvian Andes." SOIL 6, no. 1 (2020): 1–15. http://dx.doi.org/10.5194/soil-6-1-2020.

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Abstract. Recent studies indicate that climate change influences soil mineralogy by altering weathering processes and thus impacts soil aggregation and organic carbon (SOC) stability. Alpine ecosystems of the Neotropical Andes are characterized by high SOC stocks, which are important for sustaining ecosystem services. However, climate change in the form of altered precipitation patterns can potentially affect soil aggregation and SOC stability with potentially significant effects on the soil's ecosystem services. This study aimed to investigate the effects of precipitation and lithology on soi
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Wang, Enheng, Richard M. Cruse, Xiangwei Chen, and Aaron Daigh. "Effects of moisture condition and freeze/thaw cycles on surface soil aggregate size distribution and stability." Canadian Journal of Soil Science 92, no. 3 (2012): 529–36. http://dx.doi.org/10.4141/cjss2010-044.

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Wang, E., Cruse, R. M., Chen, X. and Daigh, A. 2012. Effects of moisture condition and freeze/thaw cycles on surface soil aggregate size distribution and stability. Can. J. Soil Sci. 92: 529–536. Freeze/thaw cycles can affect soil aggregate stability, which in turn impacts wind and water erosion. The objectives of this laboratory study were: (1) to determine the effect of variable freeze/thaw cycles and soil water conditions on aggregate size distribution and stability; and (2) to evaluate differences in aggregate size distribution and stability between disturbed soil and undisturbed soil core
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Dissertations / Theses on the topic "Stability of soil aggregates"

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Liang, Yun [Verfasser]. "Emerging threats to the stability of soil aggregates / Yun Liang." Berlin : Freie Universität Berlin, 2021. http://d-nb.info/1234451573/34.

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Rogers, Stephen Lloyd. "The effect of phototrophic microbial inoculants on soil aggregate stability and soil fertility." Thesis, University of Kent, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305060.

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Molope, Mishack Bochankge. "Some effects of biological and physical processess on soil aggregate stability." Thesis, University of Stirling, 1985. http://hdl.handle.net/1893/2595.

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The effects of biological and physical processes on the aggregate stability of some weakly structured arable and pasture soils were investigated. Preliminary investigations showed significant correlations between soil organic matter and both wet sieving and turbidimetric methods of aggregate stability; the latter method was chosen on grounds of convenience. Scanning electron microscope pictures showed the presence of both fungi and bacteria when soils were incubated. Growth of fungi, estimated by ergosterol measurement, correspond to temporary stability increases, which could be explained by r
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Adams, Kimberly Ellen. "Influence of Vineyard Floor Management Practices on Soil Aggregate Stability, Total Soil Carbon and Grapevine Yield." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/612.

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Soil aggregates provide pore spaces of various sizes supplying water, gases and nutrients to plant roots and microorganisms, and facilitate moisture retention and availability. Soil aggregate stability is indicative of soil biological and structural health, and is increased by soil carbon derived from plant roots and the soil microbial biomass. Aggregate stability and soil carbon can be enhanced by increasing organic matter through compost additions or by planting cover crops. Additionally, aggregate stability is enhanced by arbuscular mycorrhizal fungi (AMF) that form a symbiotic associati
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Joshi, Gyawali Ayush. "A fresh soil health perspective: Soil health dynamics and improved measurement techniques." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/89949.

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Encouraging greater implementation of conservation agriculture practices such as reduced tillage and cover crops may require better understanding of the effect of these practices on soil health. The overall objective of this study was to quantify soil health dynamics due to conservation agriculture practices and address methodological gaps in terms of measuring soil health parameters. We developed five sites across the state of Virginia; each site had replicated plots with combinations of reduced tillage versus disk tillage and wintertime cover crops versus no cover crops as experimental treat
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Cousen, S. M. L. "The assessment of soil aggregate stability to raindrop impact for some tropical soils material, with particular reference to iron." Thesis, University of Portsmouth, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375487.

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Soil aggregate stability to raindrop impact is df fundamental importance to many aspects of the soil system, in particular rainsplash erosion. This stability has been measured by use of single drop rainfall simulators, the characteristics and operation of which have, in the past, shown considerable variation. The drop sizes, impact frequency, drop fall height, chemistry of drop-forming liquid, aggregate pretreatment, and definition of breakdown affect the way in which the the apparatus can be used to define stability. In this thesis an apparatus is developed that is believed to give results wi
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Geeves, Guy William, and not available. "Aggregate Breakdown and Soil Surface Sealing under Rainfall." The Australian National University, 1997. http://thesis.anu.edu.au./public/adt-ANU20010702.142014.

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Aggregate breakdown is an important process controlling the availability of fine soil material necessary for structural sealing of soil surfaces under rainfall. It may be caused by slaking resulting from rapid soil wetting and by physical dispersion resulting from direct and indirect energetic raindrop impacts. Relationships have been proposed by others predicting steady infiltration rate and saturated hydraulic conductivity from final aggregate size following high energy rainfall on initially dry, uncovered soil surfaces. Under these extreme conditions, both rapid wetting and energetic raindr
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Larišová, Lucie. "Vliv vodní eroze na vybrané fyzikální vlastnosti půdy." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-392276.

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The aim of the dissertation thesis is the assessment of the degradation of selected soil properties due to water erosion, including the temporal dynamics of these properties and the assessment of how this change affects the cumulative infiltration of the soil in watershed. Between 2012 and 2015, undisturbed and disturbed soil samples were collected on three experimental areas and the cumulative infiltration of the soil was measured. Experimental areas were selected on sloping, erosion-endangered blocks of arable land, in three cadastral territories of the Czech Republic, and this in the cadast
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Mupambwa, Hupenyu Allan. "Winter rotational cover crops effects on soil strength, aggregate stability and water conservation of a hardsetting cambisol in Eastern Cape Province, South Africa." Thesis, University of Fort Hare, 2012. http://hdl.handle.net/10353/453.

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Winter rotational cover crops (WRCC) are often used to boost soil fertility and plant nutrition. However, selection and use of WRCC for soil physical improvement is usually overlooked. The objective of this study was to determine the effects of WRCC on soil strength, aggregate stability and water conservation of a hardsetting soil. The soil physical properties were determined after four rotations of growing monocultures of vetch (Vicia dasycarpa cv. Max), lupin (Lupinus angustifolius cv. Tanjil) and oats (Avena sativa cv. Sederberg) and after two rotations of growing bicultures of oats (Avena
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Tilligkeit, Jacqueline Elizabeth. "The Spatial Distribution of K-Factor Values Across a Toposequence and a Soil Survey Map Unit." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/826.

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Rivers and streams are adversely affected by an increase in sedimentation in their waters from eroding land. High sediment loads in streams can bury fish eggs and prevent hatching, increasing nutrients in the water causing algae blooms, or even contaminating the water with heavy metals carried in or on the aggregates. The erodibility of soil is valuable knowledge to all land users so that we may predict soil loss and its potential to pollute streams. This is done by using the Revised Universal Soil Loss Equation (RUSLE). By predicting soil loss from a given landscape, land managers can take mi
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Books on the topic "Stability of soil aggregates"

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Cousen, Stella Mary Lingwood. The assessment of soil aggregate stability to raindrop impact for some tropical soils material, with particular reference to iron. Portsmouth Polytechnic, Dept. of Geography, 1987.

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NATO, Advanced Research Workshop on Soil Colloids and Their Associations in Aggregates (1984 Ghent Belgium). Soil colloids and their associations in aggregates. Plenum Press, 1990.

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Sivakugan, N. Laboratory testing of soils, rocks, and aggregates. J. Ross, 2011.

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De Boodt, Marcel F., Michael H. B. Hayes, Adrien Herbillon, Eric B. A. De Strooper, and Jonathan J. Tuck, eds. Soil Colloids and Their Associations in Aggregates. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2611-1.

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Frikha, Wissem, Serge Varaksin, and Antonio Viana da Fonseca, eds. Soil Testing, Soil Stability and Ground Improvement. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-61902-6.

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Bromhead, Eddie. The stability of slopes. 2nd ed. New York, 1992.

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Frikha, Wissem, Shima Kawamura, and Wen-Cheng Liao, eds. New Developments in Soil Characterization and Soil Stability. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-95756-2.

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Bromhead, E. N. The stability of slopes. Surrey University Press, 1986.

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Ruenkrairergsa, Teeracharti. Proposed specifications of soil aggregates for low volume roads. Dept. of Highways, Ministry of Communications, 1988.

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W, Abramson Lee, ed. Slope stability and stabilization methods. 2nd ed. Wiley, 2002.

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Book chapters on the topic "Stability of soil aggregates"

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Papadopoulos, Apostolos. "Soil Aggregates, Structure, and Stability." In Encyclopedia of Agrophysics. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-3585-1_142.

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Emerson, W. W., and D. J. Greenland. "Soil Aggregates — Formation and Stability." In NATO ASI Series. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2611-1_18.

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Chen, Can, Wolfgang O. Eisenhut, and Thanh Ngo. "Examination of the Ignition Oven Method Correction Factor for Hot Mix Asphalt with Granite Aggregates." In New Developments in Soil Characterization and Soil Stability. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95756-2_11.

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Lynch, J. M., and Elaine Bragg. "Microorganisms and Soil Aggregate Stability." In Advances in Soil Science. Springer New York, 1985. http://dx.doi.org/10.1007/978-1-4612-5088-3_3.

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Bissonnais, Yves Le. "Soil Characteristics and Aggregate Stability." In Soil Erosion, Conservation, and Rehabilitation. CRC Press, 2023. http://dx.doi.org/10.1201/9781003418177-3.

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Dahlgren, Randy A., Felipe Macías, Marta Camps Arbestain, et al. "Aggregate Stability to Drying and Wetting." In Encyclopedia of Soil Science. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-3995-9_16.

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Karimov, Akmal, A. Noble, R. Kurbantoev, and N. Salieva. "Determining Degraded Soils of Southern Kazakhstan Through Assessing Stability of Soil Aggregates." In Developments in Soil Classification, Land Use Planning and Policy Implications. Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-5332-7_42.

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Murray, R. S., and J. P. Quirk. "Interparticle Forces in Relation to the Stability of Soil Aggregates." In NATO ASI Series. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2611-1_16.

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Tang, Xiaohong, Youjin Luo, Jiake Lv, and Chaofu Wei. "Mechanisms of Soil Aggregates Stability in Purple Paddy Soil under Conservation Tillage of Sichuan Basin, China." In Computer and Computing Technologies in Agriculture V. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27281-3_42.

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Hoyle, Burton J., and Hidemi Yamada. "Seedbeds and Aggregate Stability Improved by Rototilling Wet Soil." In SSSA Special Publications. Soil Science Society of America, 2015. http://dx.doi.org/10.2136/sssaspecpub7.c11.

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Conference papers on the topic "Stability of soil aggregates"

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He, Xihua, Yi-Ming Pan, Leonardo Caseres, Ricardo Torres, and John Wise. "Assessment of Aging Mechanisms for Concrete Exposed to Outdoor Air and Groundwater or Soil in Spent Nuclear Fuel Dry Storage Systems." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11079.

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Abstract Dry storage systems (DSSs) store spent nuclear fuel at many operating and decommissioned power reactor sites in the United States. Overpacks and support pads include various structural subcomponents that are constructed of concrete and reinforcing steel. These concrete components are commonly exposed to outdoor air and groundwater or soil environments in which the materials may be susceptible to degradation. Potential environmental, thermal, mechanical, and irradiation-induced aging mechanisms include freeze and thaw, creep, reaction with aggregates, aggressive chemical attack, corros
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Bartlova, Jaroslava. "INFLUENCE OF SOIL ORGANIC MATTER ON ITS WATER STABILITY OF SOIL AGGREGATES." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/32/s13.043.

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Kintl, Antonin, Igor Hunady, Jaroslav lang, Martin Brtnicky, and Jakub Elbl. "EFFECT OF GROWING CLOVERS AS INTERMEDIATE CROPS ON THE STABILITY OF SOIL AGGREGATES." In 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021. STEF92 Technology, 2021. http://dx.doi.org/10.5593/sgem2021/3.1/s13.57.

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Williamson, Nolan, and Dhanuska Wijesinghe. "SUSTAINABLE AGRICULTURE PRACTICES TO ENHANCE SOIL AGGREGATE STABILITY." In 73rd Annual GSA Southeastern Section Meeting - 2024. Geological Society of America, 2024. http://dx.doi.org/10.1130/abs/2024se-398718.

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Smith, Daniel J., Sherif L. Abdelaziz, and Brian D. Badgley. "Short-Term Changes in Soil Aggregate Stability in Biopolymer-Amended, Coarse-Grained Soil." In International Foundations Congress and Equipment Expo 2024. American Society of Civil Engineers, 2024. http://dx.doi.org/10.1061/9780784485415.022.

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Novotna, Jaroslava. "THE INFLUENCE OF FALLOW MANAGEMENT ON SOIL AGGREGATE STABILITY." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/3.2/s13.032.

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Schott, Linda R., Jenifer L. Yost, Kevin Kruger, April B. Leytem, and Robert S. Dungan. "Assessment of Aggregate Stability Methodologies for Calcareous Silty Soils in Idaho’s Magic Valley." In Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA. American Society of Agricultural and Biological Engineers, 2023. http://dx.doi.org/10.13031/soil.23040.

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Schott, Linda R., Jenifer L. Yost, Kevin Kruger, April B. Leytem, and Robert S. Dungan. "Assessment of Aggregate Stability Methodologies for Calcareous Silty Soils in Idaho’s Magic Valley." In Soil Erosion Research Under a Changing Climate, January 8-13, 2023, Aguadilla, Puerto Rico, USA. American Society of Agricultural and Biological Engineers, 2023. http://dx.doi.org/10.13031/soil.2022040.

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"Aggregate stability and soil carbon storage as affected by different land use practices." In Evalution and sustainable management of soil carbon sequestration in Asian countries. Food and Fertilizer Technology Center for the Asian and Pacific Region, 2010. https://doi.org/10.56669/vocl4648.

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Ruwanpathirana, P. P. "Evaluate the Effect of Biodegradable Super Absorbent Polymers (SAPs) on Soil Hydro-physical Properties: Special Reference to Water Conservation in Agriculture." In 3rd World Conference on Engineering, Technology and Applied Science. Eurasia Conferences, 2024. https://doi.org/10.62422/978-81-974314-7-0-011.

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Efficient water management is vital for sustaining agricultural productivity and ensuring food security. Recently, super absorbent polymers (SAPs) have emerged as valuable soil amendments due to their ability to conserve water by stabilizing soil structure and enhancing soil quality. However, many commonly used SAPs are not readily biodegradable, which can result in long-term environmental pollution. This study aimed to assess the effectiveness of biodegradable SAPs as soil conditioners for addressing water scarcity in subtropical regions. Five concentrations of biodegradable Fasal Amrit polym
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Reports on the topic "Stability of soil aggregates"

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Wang, Han, Issam Qamhia, Erol Tutumluer, and Youngdae Kim. Effectiveness of Geosynthetics in Soil/Aggregate Stabilization—Evaluation Using Bender Element Sensor Technology. Illinois Center for Transportation, 2025. https://doi.org/10.36501/0197-9191/25-007.

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This report presents laboratory evaluations of the effectiveness of geosynthetics in stabilizing unbound aggregate layers and develops design guidelines for using geosynthetic-stabilized pavements in Illinois. The research focused on quantifying benefits from geosynthetic mechanical stabilization and incorporating those benefits into pavement analysis and design procedures. An experimental program was conducted, including laboratory triaxial testing and large-scale test bed evaluations. Twelve geosynthetic products, including ten geogrids (integral or punched and drawn, welded, and woven) and
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Bradford, Joe, Itzhak Shainberg, and Lloyd Norton. Effect of Soil Properties and Water Quality on Concentrated Flow Erosion (Rills, Ephermal Gullies and Pipes). United States Department of Agriculture, 1996. http://dx.doi.org/10.32747/1996.7613040.bard.

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Concentrated flow erosion in rills, pipes, ephermal gullies, and gullies is a major contributor of downstream sedimentation. When rill or gullies form in a landscape, a 3- to 5-fold increase in soil loss commonly occurs. The balance between the erosive power of the flow and the erosion resistance of the bed material determines the rate of concentrated flow erosion. The resistance of the bed material to detachment depends primarily on the magnitude of the interparticle forces or cohesion holding the particles and aggregates together. The effect of soil properties on bed material resistance and
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Sutipatanasomboon, Arpaporn. Ultimate guide on Clegg Impact Testers. ConductScience, 2022. http://dx.doi.org/10.55157/cs20220727.

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A Clegg Impact Tester, also known as a Clegg Hammer, is a portable device invented by Dr. Baden Clegg to assess surface shock absorption and bearing capacity. It measures the strength of soils, aggregates, and synthetic materials for roads and sports surfaces. The tester consists of a compaction hammer, guiding tube, and piezoelectric accelerometer. It quantifies a surface's ability to withstand structural load and offers insights into strength, stiffness, and stability. The hammer is dropped from a specific height, and its impact is measured. Clegg Impact Testers are used for various applicat
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Swan, Megan, and Christopher Calvo. Site characterization and change over time in semi-arid grassland and shrublands at three parks?Chaco Culture National Historic Park, Petrified Forest National Park, and Wupatki National Monument: Upland vegetation and soils monitoring 2007?2021. National Park Service, 2024. http://dx.doi.org/10.36967/2301582.

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This report presents results of upland vegetation and soil monitoring of semi-arid grasslands at three Parks by the Southern Colorado Plateau Inventory and Monitoring Network (SCPN) from 2007?2021. The purpose is to compare and contrast five grassland ecological sites and examine how they have changed during the first 15 years of monitoring. Crews collected data on composition and abundance of vegetation, both at the species level and by lifeform (e.g., perennial grass, shrub, forb) and soil aggregate stability and soil texture at 150 plots within five target grassland/shrubland communities de
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Azzi, Elias S., Cecilia Sundberg, Helena Söderqvist, Tom Källgren, Harald Cederlund, and Haichao Li. Guidelines for estimation of biochar durability : Background report. Department of Energy and Technology, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.lkbuavb9qc.

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Biochar is produced by heating biomass in the total or partial absence of oxygen. This report addresses the long-term persistence of biochar in soil and how this can be managed in climate calculations and reporting. The report consists of this summary and four chapters, which can be read independently. Different terms have been used to describe the durability of biochar carbon storage, but also the physical presence of biochar in soils, e.g. persistence, permanence, recalcitrance, residence times, stability. Today, the term “durability of carbon storage” is preferred in policy contexts, but va
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Snyder, Victor A., Dani Or, Amos Hadas, and S. Assouline. Characterization of Post-Tillage Soil Fragmentation and Rejoining Affecting Soil Pore Space Evolution and Transport Properties. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580670.bard.

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Tillage modifies soil structure, altering conditions for plant growth and transport processes through the soil. However, the resulting loose structure is unstable and susceptible to collapse due to aggregate fragmentation during wetting and drying cycles, and coalescense of moist aggregates by internal capillary forces and external compactive stresses. Presently, limited understanding of these complex processes often leads to consideration of the soil plow layer as a static porous medium. With the purpose of filling some of this knowledge gap, the objectives of this Project were to: 1) Identif
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Fuchs, Marcel, Jerry Hatfield, Amos Hadas, and Rami Keren. Reducing Evaporation from Cultivated Soils by Mulching with Crop Residues and Stabilized Soil Aggregates. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568086.bard.

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Field and laboratory studies of insulating properties of mulches show that the changes they produce on the heat balance and the evaporation depend not only on the intrinsic characteristics of the material but also on the structure of air flow in boundary layer. Field measurements of the radiation balance of corn residue showed a decrease of reflectivity from 0.2 to 0.17 from fall to spring. The aerodynamic properties of the atmospheric surface layer were turbulent, with typical roughness length of 12 to 24 mm. Evaporation from corn residue covered soils in climate chambers simulating the diurn
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Maskarinec, M. P., C. K. Bayne, R. A. Jenkins, L. H. Johnson, and S. K. Holladay. Stability of volatile organics in environmental soil samples. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/7064388.

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Maskarinec, M., C. Bayne, L. Johnson, S. Holladay, R. Jenkins, and B. Tomkins. Stability of explosives in environmental water and soil samples. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5631314.

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Maskarinec, M. P., C. K. Bayne, R. A. Jenkins, L. H. Johnson, and S. K. Holladay. Stability of volatile organics in environmental soil samples. Final report. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/10107503.

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