Academic literature on the topic 'Soil reconstruction'

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Journal articles on the topic "Soil reconstruction"

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Long, Chun Ying, and Hui Zhang. "Soil Moisture Dynamic Discussed of the Exchanging Vegetation Reconstruction of Ying Rui Highway in the Spring." Applied Mechanics and Materials 90-93 (September 2011): 3245–49. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.3245.

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With interchanging vegetational reconstruction of Ying Rui highway as the research object, using Drying method as principal combining with TDR method,carry out communication areas of different vegetation types and different matrix types of slope area of dynamic monitoring soil moisture in the spring, the results show:Soil moisture content in spring declined as time goes on from March 8, to April 7 day. Dynamic general trend of soil moisture declined from 6:00 am to 6 :00pm,the soil moisture content overall drop which slightly fluctuates after afternoon, but has no obvious peak, and increases again after evening .The soil moisture content of two kinds of reconstruction models varies with different soil layer thickness:0-20 cm soil shows trees reconstructing model >shrubs reconstruction model ;20 to 40 cm soil shows bush rebuild model> trees reconstruction model.
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Wang, Lingling, Yange Li, Jianjun Zhang, Mingjie Qian, and Yingui Cao. "Analysis on the Difference of Reconstructed Soil Moisture Content in a Grassland Open-Pit Mining Area of China." Agronomy 12, no. 5 (April 28, 2022): 1061. http://dx.doi.org/10.3390/agronomy12051061.

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To reveal the variability of different reconstructed soil ratios and different vegetation growth grades on the water holding capacity of recon-structed soil, the most suitable ratio of reconstructed soil materials was explored. Taking the inner dump of Shengli mining area in Inner Mongolia of China as the research area, the reconstructed soil of reclaimed land was investigated and sampled. One-way analysis of variance was used to analyze the difference of the moisture content of the reconstructed soil, and the reasons for the difference were discussed. The results showed that: (1) Among the different soil reconstructions, soil moisture content was higher when soil reconstructions were rock and soil stripping material: coal gangue: fly ash = 3:4:3. The soil moisture content of un-reclaimed land was mostly at a high level when the soil reconstruction method was rock and soil stripping material; and the soil moisture content was not at the highest level when the vegetation growth grade was higher. This indicates that it was not the case that the better the vegetation growth condition was, the higher the soil moisture content was. (2) In the case where the soil reconstruction method was rock and soil stripping material: coal gangue = 2:3, the soil moisture content of the reclaimed land decreased with the reduction of tillage frequency when the vegetation growth condition was optimal (vegetation growth grade was 4). (3) In the case where the soil reconstruction method was rock and soil stripping material: coal gangue: fly ash = 3:4:3, when the vegetation growth condition was better (vegetation growth grade was 3 and 4), the soil moisture content of the re-claimed land was highest when it was tilled once every 15 days. It was also found in combination with other soil reconstruction methods that it was not always the case that the higher the frequency of tillage, the higher the soil moisture content. The study of coal gangue, fly ash and rocky soil stripping as topsoil substitute materials with their different ratios on reconstructed soil provides support for the reclamation work in topsoil scarce mines and provides technical reference for the ecological restoration project of grassland open-pit mines in the same climate zone.
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McBratney, A. B., T. F. A. Bishop, and I. S. Teliatnikov. "Two soil profile reconstruction techniques." Geoderma 97, no. 3-4 (September 2000): 209–21. http://dx.doi.org/10.1016/s0016-7061(00)00039-2.

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Chen, Xiao Yang, Jia Ping Yan, and Xiu Fang Yang. "Physio-Chemical Properties and Hydraulic Characteristics of Reconstruction Soil Filling with Fly Ash." Advanced Materials Research 356-360 (October 2011): 2669–72. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.2669.

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Abstract. Efficient full use of fly ash is still an important issue which has been troubled by the developing countries like China, and a large area subsidence as a result of coal mining also give rise to serious damage for agricultural soils. The agricultural soil profile reconstruction is great significance with fly ash as a substrate because of combining the two problems. In this paper, the feasibility of soil reconstruction is discussed through studying the physio-chemical properties and hydraulic characteristics of fly ash. The results show that the physio-chemical properties of fly ash layer in reconstruction soil profile tend to healthy development with rehabilitation time increasing. Though fly ash layer has a higher water content and poor ability of water vertical upward movement compared to surface soil, but the parameters values are basically appropriate to crop production and not evidently decreasing yields. As for potential groundwater pollution due to solute downward transport of reconstruction soil, we will start further research and draw up solution.
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Michu, E. "A short guide to phylogeny reconstruction." Plant, Soil and Environment 53, No. 10 (January 7, 2008): 442–46. http://dx.doi.org/10.17221/2194-pse.

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This review is a short introduction to phylogenetic analysis. Phylogenetic analysis allows comprehensive understanding of the origin and evolution of species. Generally, it is possible to construct the phylogenetic trees according to different features and characters (e.g. morphological and anatomical characters, RAPD patterns, FISH patterns, sequences of DNA/RNA and amino acid sequences). The DNA sequences are preferable for phylogenetic analyses of closely related species. On the other hand, the amino acid sequences are used for phylogenetic analyses of more distant relationships. The sequences can be analysed using many computer programs. The methods most often used for phylogenetic analyses are neighbor-joining (NJ), maximum parsimony (MP), maximum likelihood (ML) and Bayesian inference.
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Raymond, Gerald P. "Failure and reconstruction of a gantry crane ballasted track." Canadian Geotechnical Journal 38, no. 3 (June 1, 2001): 507–29. http://dx.doi.org/10.1139/t00-121.

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The paper deals with the reconstructions that were undertaken to correct multiple ballasted track foundation failures for a heavy gantry crane initially constructed in 1985. A satisfactory design was obtained in 1988 that incorporated geosynthetics.Key words: gantry crane, ballasted track, failure, reconstruction, geosynthetics, soil mechanics, foundation.
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Krutov, V. I., and A. S. Kovalev. "Soil compaction in industrial building reconstruction." Soil Mechanics and Foundation Engineering 23, no. 6 (November 1986): 219–23. http://dx.doi.org/10.1007/bf01716685.

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Brovko, I. S., Y. B. Kunanbayeva, E. I. Brovko, and K. S. Baibolov. "EXPERIMENTAL SUBSTANTIATION OF SOIL SELECTION IN RECONSTRUCTION OF A MAIN GAS PIPELINE." NEWS of National Academy of Sciences of the Republic of Kazakhstan 6, no. 444 (December 15, 2020): 41–49. http://dx.doi.org/10.32014/2020.2518-170x.129.

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The results of complex geotechnical studies aimed at creating a temporary soil dam for the reconstruction of the main gas pipeline are conducted. Based on the study of the properties of the three types of soils that are in the vicinity, the technical-economical efficiency and prediction of the compaction of the recommended soil are substantiated. The choice of soil laid in the dam should be carried out on the basis of the study of the properties of soils and feasibility study. Technical-economical assessment is impossible without knowledge of the characteristics of the soil, which were obtained in laboratory conditions. Three series of experiments were performed for this: determination of soil density; determination of the angle of repose; determination of soil filtration coefficient. The parameters were investigated in the course of the experiments, on which the quality of the soil dam depends to the greatest extent: density; angle of repose during dumping; filtration properties (filtration coefficient). Based on an analysis of the current situation, proceeding on environmental requirements and considerations of economic feasibility, it was proposed to fill in a temporary embankment to allow the piles to be loaded by driving, and to make it out of medium-sized sand composing the surface thickness in a given area. On the assumption of the technological requirements of the reconstruction, the dam should be 5 m high and 36 m high on the top and 51 m high on the bottom. Based on experimental-analytical researches, a motivated choice of soil is substantiated, which made it possible to obtain an economic effect confirmed by the act.
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Zhang, H. C., B. Li, M. S. Yang, G. L. Lei, H. Ding, Jie Niu, H. F. Fan, W. X. Zhang, and F. Q. Chang. "Dating Paleosol and Animal Remains in Loess Deposits." Radiocarbon 48, no. 1 (2006): 109–16. http://dx.doi.org/10.1017/s0033822200035438.

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Accurate and reliable dating of paleosols, animal remains, and artifacts is of crucial importance in reconstructing environmental change and understanding the interrelationship between human activities and natural environments. Dating different materials in the same sample can help resolve problems such as soil carbon sources and carbon storage state. Conventional radiocarbon dating of soil (inorganic and organic matter) and accelerator mass spectrometry (AMS) dating of animal remains (fossil bones and teeth) result in different ages for materials from the same sample position in a typical loess section at Xinglong Mountain, Yuzhong County, Gansu Province in NW China. Inorganic matter is ∼3400 yr older than organic matter, 4175 ± 175 cal BP to 3808 ± 90 cal BP. A 1610-yr difference between the 14C ages of fossils (animal bones and teeth) and soil organic matter suggests that a depositional hiatus exists in the studied profile. The varying 14C ages of fossils and soil organic and inorganic matter have important implications for paleoclimate reconstructions from loess sections. It is critical to consider the meaning of the variable 14C ages from different material components from the same sample position in terms of soil organic and inorganic carbon storage, vegetation history reconstruction, archaeology, and the study of ancient civilizations.
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Matviyishyna, Zhanna, Sergiy Doroshkevich, and Anatoliy Kushnir. "Reconstruction of trypilliantime landscapes using paleopedological studies." Visnyk of the Lviv University. Series Geography, no. 48 (December 23, 2014): 107–16. http://dx.doi.org/10.30970/vgg.2014.48.1298.

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Based on studies of buried soils at two archaeological sites Holocene (Likarove, Myropill) territory Podolski–at-Dnieper forest-steppe zone of Ukraine reconstructed landscapes time of life Trypilska cultural community (6 000-4 000 B.P). The research results are based on data from a comprehensive study of active paleopedolohichnoho using micromorphological analysis of ancient and modern soils. These data illustrate partially offset boundaries of modern landscape areas to the north compared to the corresponding stage of the long-standing nature. Key words: landscape, buried soil, Holocene, paleopedological research, Trypillian culture.
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Dissertations / Theses on the topic "Soil reconstruction"

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Low, Spencer Nishimoto. "An Exploration of Soil Moisture Reconstruction Techniques." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/9169.

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Satellite radiometers are used to remotely measure properties of the Earth's surface. Radiometers enable wide spatial coverage and daily temporal coverage. Radiometer measurements are used in a wide array of applications, including freeze/thaw states inference, vegetation index calculations, rainfall estimation, and soil moisture estimation. Resolution enhancement of these radiometer measurements enable finer details to be resolved and improve our understanding of Earth. The Soil Moisture Active Passive (SMAP) radiometer was launched in April 2014 with a goal to produce high resolution soil moisture estimates. However, due to hardware failure of the radar channels, prepared algorithms could no longer be used. Current algorithms utilize a narrow spatial and temporal overlap between the SMAP radiometer and the SENTINEL-1 radar to produce high resolution soil moisture estimates that are spatially and temporally limited. This thesis explores the use of resolution enhancing algorithms to produce high resolution soil moisture estimates without the spatial coverage limitations caused by using multiple sensors. Two main approaches are considered: calculating the iterative update in brightness temperature and calculating the update in soil moisture. The best performing algorithm is the Soil Moisture Image Reconstruction (SMIR) algorithm that is a variation of the Radiometer form of the Scatterometer Image Reconstruction (rSIR) algorithm that has been adapted to operate in parameter space. This algorithm utilizes a novel soil moisture measurement response function (SMRF) in the reconstruction. It matches or exceeds the performance of other algorithms and allows for wide spatial coverage.
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Meredith, Kelly Robyn. "The Influence of Soil Reconstruction Methods on Mineral Sands Mine Soil Properties." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31006.

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Significant deposits of heavy mineral sands (primarily ilmenite and zircon) are located in Virginia in Dinwiddie, Sussex and Greensville counties. Most deposits are located under prime farmland, and thus require intensive reclamation when mined. The objective of this study was to determine the effect of four different mine soil reconstruction methods on soil properties and associated rowcrop productivity. Treatments compared were 1) Biosolids-No Tillage, 2) Biosolids-Conventional Tillage, 3) Lime+NPK fertilized tailings (Control), and 4) 15-cm Topsoil over lime+P treated tailings. Treated plots were cropped to corn (Zea Mays L.) in 2005 and wheat (Triticum aestivum L.) in 2006. Yields were compared to nearby unmined prime farmland yields. Over both growing seasons, the two biosolids treatments produced the highest overall crop yields. The Topsoil treatment produced the lowest corn yields due to relatively poor physical and chemical conditions, but the effect was less obvious for the following wheat crop. Reclaimed land corn and wheat yields were higher than long-term county averages, but they were consistently lower than unmined plots under identical management. Detailed morphological study of 20 mine soil pedons revealed significant root-limiting subsoil compaction and textural stratification. The mine soils classified as Typic Udorthents (11), Typic Udifluvents (4) and Typic Dystrudepts (5). Overall, mined lands can be successfully returned to intensive agricultural production with comparable yields to long-term county averages provided extensive soil amendment and remedial tillage protocols are implemented. However, a significant decrease (~25 to 35%) in initial productivity should be expected relative to unmined prime farmland.
Master of Science
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Mohammad, Vali Samani Abbas. "Travel-time tomography for stress reconstruction in granular soil media." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq22221.pdf.

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Nussberger, Mathis. "Soil moisture determination with TDR: single-rod probes and profile reconstruction algorithms /." Zürich, 2005. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15965.

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Lu, Ye. "Reconstruction, characterization, modeling and visualization of inherent and induced digital sand microstructures." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37176.

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Strain localization, the phenomenon of large shear deformation within thin zones of intensive shearing, commonly occurs both in-situ and in the laboratory tests on soils specimens. The intriguing mechanism of strain localization and how it will affect the general behavior of soil specimens have been investigated by many researchers. Some of the efforts have focused on finding the links between material properties (void space, fabric tensor) and mechanical behavior (stress, strain, volumetric strain). In the last ten years, several extensive studies have been conducted at Georgia Tech to investigate the mechanism of strain localization and link the microstructural properties with the engineering behavior of Ottawa sands. These studies have included 2-D and 3-D characterization of soil microstructures under either triaxial or biaxial shearing conditions. To extend and complement these previous studies, the current study focuses particularly on 3-D reconstruction, analysis and modeling of specimens of Ottawa sand subject to triaxial or biaxial loading. The 3-D microstructure of biaxial specimens was reconstructed using an optical microscopy based montage and serial sectioning technique. Based on the reconstructed 3-D digital volumes, a series of 2-D and 3-D characterizations and analyses, including local void ratio distributions, extent of shear bands, influence of soil fabrics and packing signature effects, were conducted. In addition to the image analysis based reconstruction and characterization, the 3-D discrete element method (DEM) code, PFC3D, was used to explore both biaxial and triaxial shear related soil behaviors at the global and particulate scale. Void ratio distributions, coordination numbers, particle rotations and displacements, contact normal distributions and normal contact forces as well as global stress and strain responses were investigated and analyzed to help understand the mechanism of strain localization. The microstructures of the numerical specimens were also characterized in the same way as the physical specimens and similar strain localization patterns were identified. Combined with the previous related studies, the current study provides new insights into the strain localization phenomenon of Ottawa sands subject to triaxial and biaxial loading. In addition, the reconstructed digital specimens were subject to a series of dissection studies which revealed exciting new insights into "microstructure signatures" which exist at both meso and micro scales within the real and simulated specimens.
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Dunsford, Simon John. "Acidifying peat as an aid to the reconstruction of lowland heath on arable soil." Thesis, University of East Anglia, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302044.

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Pereira, Mauricio Fernando Lima. "Um modelo de reconstrução tomográfica 3D para amostras agrícolas com filtragem de Wiener em processamento paralelo." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-17092007-205738/.

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Neste trabalho, é apresentado um novo modelo de reconstrução tridimensional (3D) para amostras agrícolas com filtragem de Wiener em processamento paralelo, o qual é obtido a partir de reconstruções tomográficas bidimensionais (2D). No desenvolvimento, foram modelados algoritmos paralelos de retroprojeção filtrada e reconstrução tridimensional, baseando-se na inserção de um conjunto de planos virtuais entre pares de planos reais obtidos em ensaios tomográficos de raios X na faixa de energia de 56 keV a 662 keV. No modelo, os planos virtuais gerados em algoritmo paralelo são implementados com base na técnica de interpolação por B-Spline-Wavelet. Para validação do modelo desenvolvido, foi utilizada uma plataforma paralela composta de 4 processadores DSP, a qual possibilitou a troca de dados entre os processadores DSP e o envio de informações para o host, um computador desktop com processador Pentium III operando em 800 MHz. A extração de medidas de eficiência, de ganho e de precisão dos algoritmos paralelos foi realizada com base em um conjunto de amostras agrícolas (solo, vidro e madeiras) e de phantoms de calibração. Nessa avaliação, observou-se que o algoritmo de reconstrução 2D, utilizado como base para o algoritmo de reconstrução 3D, possibilitou uma alta eficiência para imagens de maior resolução, atingindo um pico de 92% de eficiência na resolução de 181X181 pixels. O algoritmo paralelo de reconstrução 3D foi analisado para um conjunto de amostras, sob diferentes configurações de planos reais e virtuais, organizados de forma a possibilitarem a avaliação do impacto causado pelo aumento da granularidade da comunicação e da carga de trabalho. Um melhor desempenho, com ganho médio igual a 3,4, foi obtido na reconstrução de objetos que demandaram o cálculo de um maior número de planos. Também, buscou-se conhecer a adaptabilidade do modelo para uso em arquitetura convencional, sendo que neste caso o uso de MPI permitiu a comunicação entre as tarefas projetadas em cada algoritmo paralelo. Adicionamente, foram incluídas ferramentas de visualização 2D e 3D para que usuários possam analisar as imagens e as características das amostras agrícolas em ambiente tridimensional. Os resultados obtidos indicam que o modelo de reconstrução 3D paralela trouxe contribuições originais para a área de tomografia agrícola aplicada à física de solos, bem como para a criação de ferramentas que viabilizem explorar recursos computacionais disponíveis em arquiteturas paralelas que demandem elevada capacidade de processamento.
This work presents a new method for three dimensional (3D) image reconstruction dedicated to the investigation in soil physics by means of X-ray tomography which is obtained using two-dimensional (2D) tomographic image reconstructed slices. The conception of the 3D model for reconstruction and visualization was based on the filtered back projection algorithm, operating under parallel environment together the insertion of virtual planes between pairs of real planes obtained by X-Ray tomography under energies varying from 56 keV to 662 keV. In this model, the virtual planes were generated by interpolation with the use of B-Spline-Wavelets. The evaluation of the 3D reconstruction model was established by using a set of agricultural samples (i.e., soil, glass, wood and calibration phantoms) having different configuration for the planes. Such configuration was based on setting not only the sizes and the number of the real but also the virtual planes in the volume. This procedure allows the impact measurements as a function of the increasing in workload and the communication granularity. To validate the reconstruction model, a dedicated parallel architecture composed of 4 DSP processors was used. This board enables data exchange between DSP processors and communication with host computer. A measurement of efficiency with a speed up equal to 3.4 was obtained using the same set of samples and a better performance was observed with a higher number of planes. Also, to understand about its adaptability, the model was implemented in conventional architecture, using MPI library to enable communication between designed tasks. Additionally, 2D and 3D visualization tools based on Vizualization ToolKit were included in order to help users to analyze images and their characteristics. Results have shown that the 3D parallel model reconstruction brought original contributions for the soil science diagnosis by X-Ray tomography, as well as to explore the available computational resources in parallel architectures, which demands great processing capacity.
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Cecchet, Fernanda Aparecida. "Análise de fitólitos aplicada a reconstrução paleoambiental (vegetação e clima) na superfície incompletamente aplainada VI Campo Erê (SC) no pleistoceno tardio." Universidade Estadual do Oeste do Parana, 2015. http://tede.unioeste.br:8080/tede/handle/tede/63.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Phytoliths are microscopic particles of silica, or biomineralizations, formed during the growth of the plant, through the absorption of dissolved monosilicic acid (H4SiO4) solute from the soil. Phytoliths remain preserved in soil under certain environmental conditions making them a great ally in paleoenvironmental reconstruction studies. In South-West Paraná and North-West Santa Catarina, where there were large areas of Araucaria moist forests (AMF), the Genesis and Evolution of Geomorphological Surfaces and Surface Formations research group (GPGESGFS) has carried out dedicated research using diverse biological proxies, including phytoliths, in order to understand the principal factors and processes which were active in the formation of the current relief and in the evolution of the landscape of this region. Considering the hypothesis of environmental changes (climate and vegetation) in the South of Brazil during the Pleistocene/Holocene, the present study has as its main objective understanding the environmental dynamic during the Late Pleistocene and Holocene, which may have acted on the evolution of the landscape of Campo Erê (SC), incomplete planation surface VI. The results obtained through routine physical and chemical analyses of the phytolith assemblage, the ratios of the stable carbon isotopes and 14C dating of the humin fraction, have enabled us to conclude that the soil studied in Campo Erê (SC), a typical distroferric red nitosol with humic A horizon, developed in situ through pedogenic evolution from the material of origin, basalt. Since the middle of the last glacial maximum (18.060-17.845 Years Cal. BP.) this profile developed beneath vegetation, possibly less leafy than the current vegetation, with a mixture of C3 (grasses, trees and bushes) and C4 (grasses) plants. This pattern of vegetation remained until the beginning of the Holocene (8.055-7.960 Years Cal. BP.) From the Middle Holocene on, there occurred an opening up of the vegetation, marked by greater participation of C4 grasses, possibly a campo sujo (a herbaceous layer with occasional small trees), shown as much by the isotopic signal as by the phytolith assemblage. This vegetation lasted until approximately 1.875-1.715 years Cal BP, once again becoming vegetation formed predominantly by C3 plant species of photosynthetic cycle, until the formation of the current AMF found in the study area. At no time were signs of dense tree formation detected, but instead leafy vegetation, which was at times more open and at others more closed. This characteristic is prominent in the vegetation of the south of Brazil, where extensive areas of AMF are surrounded by grasslands forming great mosaics on the landscape. All the climatic oscillations, however small, reflect the retreat or advance of this forest over grassland or vice-versa
Fitólitos são microscópicas partículas de sílica ou biomineralizações formadas devido à absorção do ácido monossílico (H4SiO4) dissolvido do soluto do solo durante o crescimento da planta. Os fitólitos ficam preservados no solo em determinadas condições ambientais tornando-se um grande aliado em estudos de reconstrução paleoambiental. No Sudoeste do Paraná e Noroeste de Santa Catarina, onde ocorriam grandes área de Floresta Ombrófila Mista (FOM), o Grupo de Pesquisa Gênese e Evolução de Superfícies Geomorfológicas e Formação Superficiais (GPGESGFS) tem se dedicado às pesquisas usando diversos proxies biológicos inclusive os fitólitos para compreender quais foram os principais fatores e processos que atuaram na formação do atual relevo e na evolução da paisagem nessa região. Considerando a hipótese de mudanças ambientais (clima e vegetação) no Sul do Brasil durante o Pleistoceno/Holoceno o presente estudo tem como objetivo principal compreender a dinâmica ambiental ao longo do Pleistoceno Tardio e Holoceno , que pode ter atuado na evolução da paisagem na região de Campo Erê (SC), superfície incompletamente aplainada VI. Os resultados obtidos através das análises físicas e químicas de rotina, de assembleia de fitólitos, as razões de isótopos estáveis de carbono e datações por 14C da fração humina, permitiram concluir que o solo estudado em Campo Erê (SC), um NITOSSOLO VERMELHO Distroférrico típico com horizonte A húmico, se desenvolveu in situ através de evolução pedogenética a partir do material de origem, o basalto. Desde meados do Ultimo Maximo Glacial (18.060-17.845 Anos Cal. AP.) este perfil se desenvolveu sob uma vegetação, possivelmente menos arborizada que a atual, com mistura de plantas C3 (gramíneas, árvores e arbustos) e C4 (gramíneas). Este padrão de vegetação se manteve até o inicio do Holoceno (8.055-7.960 Anos Cal. AP.). A partir do Holoceno médio ocorreu uma abertura da vegetação, marcada pela maior participação de gramíneas C4, possivelmente um campo sujo, evidenciada tanto pelo sinal isotópico, quanto pela assembleia fitolítica. Essa vegetação perdurou até aproximadamente 1.875-1.715 anos Cal AP, tornando-se novamente uma vegetação formada predominantemente por espécie de plantas de ciclo fotossintético C3 até a formação da atual FOM encontrada na área de estudo. Em nenhum momento detectou-se sinais de uma formação arbórea densa, mas sim uma vegetação arborizada que por vezes esteve mais aberta e por vezes mais fechada. Essa característica é eminente da vegetação do sul do Brasil onde extensas áreas de FOM são cercadas por campos formando grandes mosaicos na paisagem. Todas as oscilações climáticas, por menores que sejam, refletem o retrocesso ou o avanço dessa floresta sob o campo ou vice-versa.
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Kakembo, Vincent. "A reconstruction of the history of land degradation in relation to land use change and land tenure in Peddie district, former Ciskei." Thesis, Rhodes University, 1997. http://hdl.handle.net/10962/d1005523.

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A history of land degradation is reconstructed in a part of the dividing ridge between the Great Fish and Keiskamma rivers, in Peddie District, former Ciskei. The study entails a comparative investigation of the progressive changes in land use, vegetation and soil erosion in three tenure units, namely: former commercial farms, traditional and betterment villages. Analysis of the sequential aerial photography of the area for 1938,1954, 1965, 1975 and 1988 is employed. This is backed by groundtruthing exercises. Data thus obtained are quantified, and linkages between degradation, anthropogenic and physical factors are derived using PC ARC/INFO GIS. Differences in land tenure systems emerge as the main controlling factor to variations in land degradation. Confinement of vegetation diminution and erosion to traditional and betterment villages is observed at all dates. Scantily vegetated surfaces and riparian vegetation removal are a characteristic feature of both areas throughout the study period. 'Betterment,' introduced in the early 1960s to curb land degradation is, instead observed to exacerbate it, particularly soil erosion. Trends in land use change are characterised by the abandonment of cultivated land, which is noted to coincide with a sharp rise in population. Erosion intensification into severe forms particularly between 1965 and 1975, coincident with a period of extreme rainfall events, emerges as the most significant degradation trend. A close spatial correlation between abandoned cultivated land and intricate gullies is identified. So is the case between grazing land and severe sheet erosion. Within the grazing lands, an examination of erosion and categories of vegetated surfaces reveals that erosion occurs predominantly on the scanty vegetation category. Such erosion-vegetation interaction largely explains the non-recovery of the scanty vegetation category, even during periods of intense rainfall. Extensive channel degradation is evident along stream courses with scanty riparian vegetation. Physical factors are noted to have a significant bearing on erosion. The high prevalence of erosion on the Ecca group of rocks confirms its erosion-prone nature. Pockets of colluvium and alluvium accumulation in the steep bottomlands are identified as the sites of the most severe gully erosion. Field surveys at some of the sites indicate that a dolerite sill through the area forms a boundary of colluvium accumulation and the upslope limit to gully incision. That these sites are recognised as formerly cultivated land, portrays the interaction between physical and anthropogenic variables with regard to inducing degradation in the area.
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SOARES, Paula Fernanda Chaves. "Organossolos: morfologia, atributos f?sicos, qu?micos e abund?ncia natural de is?topos de carbono e nitrog?nio." Universidade Federal Rural do Rio de Janeiro, 2015. https://tede.ufrrj.br/jspui/handle/jspui/1447.

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According to the Brazilian Soil Classification System the Organossolos (Histosols) are characterized by horizons with high organic matter content and a given thickness. The carbon content is related to pedogenesis processes; however for the carbon addition and maintenance in the soil in such amount and thickness to meet the criteria of the classification system there are several factors working in conjunction, culminating in the soil genesis process. These soils can be formed by paludization or litter accumulation. The overall objective of the study was to characterize and classify Organossolos and to verify the influence of their genesis in the soil attributes, evaluating physical and chemical properties; in addition, the application of isotopic methods for analyzing natural abundance of carbon and nitrogen isotopes, relating the data with changes in vegetation and in soil evolution. The soils are under Atlantic Forest in the state of Rio de Janeiro. There were selected four profiles in different environments, one in the municipality of Mag? in the plains neighboring the Guanabara Bay, the second in Campos dos Goytacazes municipality, near Lagoa Feia, both in hot and humid climate and lowland plain relief. Two other soil profiles were located in Itatiaia municipality, in the highland section of the Itatiaia National Park, under cold weather and humid and mountainous vegetation environment. A series of analytical procedures were made: description and morphological characterization, analysis of chemical and physical properties, determination of carbon and nitrogen, chemical fractionation of humic substances, mineral material (MM), density of organic matter (DOM), minimum residue (MR), solubility in sodium pyrophosphate (SSP), determination of fibers and Von Post decomposition scale; plus the quantification of natural abundance of carbon isotopes (12C and13C) and nitrogen (14N and 15N), and carbon dating by the method of C. The RJ-01 profile was classified as ORGANOSSOLO Tiom?rfico S?prico t?pico, the RJ-02 as ORGANOSSOLO H?plico S?prico t?pico, the RJ-03 as ORGANOSSOLO H?plico H?mico t?pico and RJ-04 as ORGANOSSOLO F?lico S?prico cambiss?lico, equivalent to Sulfosaprists (RJ-01) Haplosaprists (RJ-02), Haplohemists (RJ-03) and Udifolists (RJ-04), in the Soil Taxonomy (USDA-NRCS). The RJ- 01 was significantly thicker and higher in carbon content in the subsurface. The RJ-02 profile was shallower, but had a higher organic matter deposition. The RJ-03 profile had the organic matter (OM) with the oldest C dating, in the range of 3351-3699 years at 40-50 cm. However, the RJ-04 profile stood out from the others because it had better soil drainage, higher degree of OM humification. Also, this profile had a variation of ?6 of 13C, indicating a change in local floristic composition with an increase of vegetation with C3 photosynthetic cycle, which is a hint of climate change.
De acordo com o Sistema Brasileiro de Classifica??o de Solo os Organossolos s?o caracterizados por horizontes com elevado teor de material org?nico e uma espessura m?nima. O teor de carbono esta ligado ao processo pedogen?tico, por?m para que ocorra a adi??o e manuten??o de carbono em quantidade e espessura de forma a atender os crit?rios do sistema de classifica??o uma s?rie de fatores atua em conjunto, culminando com o processo de g?nese do solo. Esses solos podem ser formados atrav?s de um desses processos: paludiza??o ou acumula??o de liteira. O objetivo geral do trabalho foi caracterizar e classificar Organossolos e verificar a influ?ncia da sua g?nese sobre os atributos ed?ficos, analisando as propriedades f?sicas e qu?micas; ainda a aplica??o de m?todos de an?lise da abund?ncia natural de is?topos de carbono e nitrog?nio, relacionando-as as altera??es na vegeta??o e na evolu??o do solo, em dois ambientes de Floresta Atl?ntica, no Estado do Rio de Janeiro. Para tanto foram selecionados quatro perfis em locais distintos, um em Mag? ao fundo da Ba?a de Guanabara, o segundo em Campos dos Goytacazes pr?ximo a Lagoa Feia, ambos em ambientes de clima quente e ?mido e relevo plano de v?rzea. Outros dois perfis localizam-se em Itatiaia, na parte alta do Parque Nacional de Itatiaia (PNI), em ambiente de clima frio e ?mido e vegeta??o altomontana. Realizou-se uma s?rie de procedimentos anal?ticos: descri??o e caracteriza??o morfol?gica, an?lises de atributos qu?micos e f?sicos, determina??o de carbono e nitrog?nio, fracionamento qu?mico das subst?ncias h?micas, material mineral (MM), densidade da mat?ria org?nica (DMO), res?duo m?nimo (RM), solubilidade em pirofosfato de s?dio (IP), determina??o de fibras (FE e FN) e escala de decomposi??o de Von Post, abundancia natural de is?topos do carbono (12C e 13C) e nitrog?nio (14N e 15N) e data??o da mat?ria org?nica do solo atrav?s do m?todo de C. O perfil RJ-01 foi classificado como ORGANOSSOLO Tiom?rfico S?prico t?pico, o RJ-02 como ORGANOSSOLO H?plico S?prico t?pico, o RJ-03 como ORGANOSSOLO H?plico H?mico t?pico e o RJ-04 como ORGANOSSOLO F?lico S?prico cambiss?lico. O perfil RJ-01 apresentou maior espessura e teores de carbono mais elevados em subsuperf?cie. O perfil RJ-02 foi o de menor profundidade, por?m possui maior deposi??o atual de mat?ria org?nica (MO). O perfil RJ- 03 possui a MO mais antiga, datando na faixa de 3351-3699 anos a 40-50 cm. No entanto, o perfil RJ-04 destacou-se dos demais por apresentar melhor drenagem e maior grau de humifica??o da MO. Al?m disso, esse perfil mostrou varia??o do valor de C de ?6, indicando altera??o na composi??o flor?stica local, com o aumento de vegeta??o do ciclo fotossint?tico C3, o que ? apontado como ind?cio de altera??es clim?ticas.
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Books on the topic "Soil reconstruction"

1

Leskiw, L. A. Battle River soil reconstruction project: Five year summary. Edmonton, Alta: Alberta Land Conservation and Reclamation Council, Reclamation Research Technical Advisory Committee, 1989.

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N, Graveland D., and Alberta. Reclamation Research Technical Advisory Committee., eds. Highvale soil reconstruction project: Five year summary. Edmonton, Alta: Alberta Land Conservation and Reclamation Council, Reclamation Research Technical Advisory Committee, 1988.

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Hooks, C. L. Rowcrop response to truck and scraper hauled root media systems in soil reconstruction. S.l: s.n, 1992.

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Laguros, Joakim G. Stabilization of existing subgrades to improve constructibility during interstate pavement reconstruction. Washington, D.C: National Academy Press, 1997.

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International, Symposium on Headwater Control (3rd 1995 New Delhi India). Sustainable reconstruction of highland and headwater regions: Proceedings of Third International Symposium on Headwater Control, New Delhi, October 6-8, 1995. Rotterdam: A.A. Balkema, 1995.

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Jamil: Révélations d'un homme en reconstruction. Montréal]: Les Très mal entendus, 2014.

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Hans, Schmidt. Hitler boys in America: Re-education exposed : a comparative study of the soul destroying effects of the Allied imposed re-education on the psyche of the German people. Pensacola, FL: H. Schmidt Publications, 2003.

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8

Wall, David. Reconstructing the soul of Elvis: The development and maintenance of Elvis Presley as intellectualproperty. Manchester: Manchester Metropolitan University, 1990.

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Wall, David S. Reconstructing the soul of Elvis: The development and maintenance of Elvis Presley as intellectual property. Manchester: Manchester Metropolitan University, 1995.

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Dear America: I Thought My Soul Would Rise and Fly: The Diary of Patsy, a Freed Girl, Mars Bluff, South Carolina, 1865. New York: Scholastic, 1997.

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Book chapters on the topic "Soil reconstruction"

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Zhang, J. C., D. L. DeAngelis, and J. Y. Zhuang. "Social and Economic Benefits of Forest Reconstruction." In Theory and Practice of Soil Loss Control in Eastern China, 257–76. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9679-4_13.

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Zhang, J. C., D. L. DeAngelis, and J. Y. Zhuang. "Theory of Vegetation Reconstruction for Various Management Types with Different Site Conditions." In Theory and Practice of Soil Loss Control in Eastern China, 141–60. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9679-4_9.

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Rymarczyk, Tomasz, Grzegorz Kłosowski, and Arkadiusz Gola. "The Use of Artificial Neural Networks in Tomographic Reconstruction of Soil Embankments." In Advances in Intelligent Systems and Computing, 104–12. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-99608-0_12.

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Schöler, Anne, Maria de Vries, Gisle Vestergaard, and Michael Schloter. "Reconstruction of Transformation Processes Catalyzed by the Soil Microbiome Using Metagenomic Approaches." In Microbial Environmental Genomics (MEG), 197–206. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-3369-3_12.

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Goto, Itsuo, and Kaisei Inagaki. "Initiatives by the Soil Fertilization Team to Develop Agricultural Technologies for Paddy Fields with Radioactive Contamination." In Agricultural and Forestry Reconstruction After the Great East Japan Earthquake, 123–38. Tokyo: Springer Japan, 2015. http://dx.doi.org/10.1007/978-4-431-55558-2_8.

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Subbotin, Sergei A. "Phylogenetic analysis of DNA sequence data." In Techniques for work with plant and soil nematodes, 265–82. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781786391759.0265.

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Abstract The goal of phylogenetics is to construct relationships that are true representations of the evolutionary history of a group of organisms or genes. The history inferred from phylogenetic analysis is usually depicted as branching in tree-like diagrams or networks. In nematology, phylogenetic studies have been applied to resolve a wide range of questions dealing with improving classifications and testing evolution processes, such as co-evolution, biogeography and many others. There are several main steps involved in a phylogenetic study: (i) selection of ingroup and outgroup taxa for a study; (ii) selection of one or several gene fragments for a study; (iii) sample collection, obtaining PCR products and sequencing of gene fragments; (iv) visualization, editing raw sequence data and sequence assembling; (v) search for sequence similarity in a public database; (vi) making and editing multiple alignment of sequences; (vii) selecting appropriate DNA model for a dataset; (viii) phylogenetic reconstruction using minimum evolution, maximum parsimony, maximum likelihood and Bayesian inference; (ix) visualization of tree files and preparation of tree for a publication; and (x) sequence submission to a public database. Molecular phylogenetic study requires particularly careful planning because it is usually relatively expensive in terms of the cost in reagents and time.
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Subbotin, Sergei A. "Phylogenetic analysis of DNA sequence data." In Techniques for work with plant and soil nematodes, 265–82. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781786391759.0015.

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Abstract The goal of phylogenetics is to construct relationships that are true representations of the evolutionary history of a group of organisms or genes. The history inferred from phylogenetic analysis is usually depicted as branching in tree-like diagrams or networks. In nematology, phylogenetic studies have been applied to resolve a wide range of questions dealing with improving classifications and testing evolution processes, such as co-evolution, biogeography and many others. There are several main steps involved in a phylogenetic study: (i) selection of ingroup and outgroup taxa for a study; (ii) selection of one or several gene fragments for a study; (iii) sample collection, obtaining PCR products and sequencing of gene fragments; (iv) visualization, editing raw sequence data and sequence assembling; (v) search for sequence similarity in a public database; (vi) making and editing multiple alignment of sequences; (vii) selecting appropriate DNA model for a dataset; (viii) phylogenetic reconstruction using minimum evolution, maximum parsimony, maximum likelihood and Bayesian inference; (ix) visualization of tree files and preparation of tree for a publication; and (x) sequence submission to a public database. Molecular phylogenetic study requires particularly careful planning because it is usually relatively expensive in terms of the cost in reagents and time.
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Dion, Patrice. "Reconstructing Soil Biology." In Soil Biology, 75–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75575-3_3.

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Moroz, Olha, and Volodymyr Stepashko. "A Method for Reconstruction of Unmeasured Data on Seasonal Changes of Microorganisms Quantity in Heavy Metal Polluted Soil." In Advances in Intelligent Systems and Computing, 421–32. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01069-0_30.

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Saey, T., M. Van Meirvenne, D. Simpson, U. W. A. Vitharana, L. Cockx, and H. Vermeersch. "Reconstructing Palaeotopography at the Beginning of the Weichselian Glacial Stage Using an Electromagnetic Induction Sensor." In Proximal Soil Sensing, 423–34. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8859-8_36.

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Conference papers on the topic "Soil reconstruction"

1

V.S.Bodapati and L.G.Wells. "Dynamic Mechanical Control System for Soil Reconstruction." In 2006 Portland, Oregon, July 9-12, 2006. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2006. http://dx.doi.org/10.13031/2013.21444.

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Schmidt, Felix, Norman Wagner, Juliane Mai, Peter Lunenschlob, Hannes Topfer, and Jan Bumberger. "Dielectric Spectra Reconstruction of Layered Multi-Phase Soil." In 2018 12th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances (ISEMA). IEEE, 2018. http://dx.doi.org/10.1109/isema.2018.8442324.

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Qiuji, Chen. "Fractal Dimension of Reconstruction Soil in Reclamation Area." In 2008 International Workshop on Geoscience and Remote Sensing (ETT and GRS). IEEE, 2008. http://dx.doi.org/10.1109/ettandgrs.2008.90.

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Long, David G., Mary J. Brodzik, and Molly Hardman. "Enhanced-resolution SMAP soil moisture using image reconstruction." In 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS). IEEE, 2017. http://dx.doi.org/10.1109/igarss.2017.8127502.

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Evans, Allen D., Lisheng Shao, and Thang V. Nguyen. "Wet Soil Mixing to Stabilize Highly Variable Subsurface Soil for the Reconstruction of Hemet Elementary School." In International Conference on Geotechnical and Earthquake Engineering 2018. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482049.005.

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Konagai, Kazuo, Jorgen Johansson, Atsunori Numata, Shigeki Takatsu, and Takaaki Ikeda. "Geological and Microtremor Survey, Damage Distribution, and Reconstruction of Muzaffarabad and Surroundings after the 2005 Kashmir Earthquake." In Geotechnical Earthquake Engineering and Soil Dynamics Congress IV. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40975(318)35.

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Zaytsev, Andrey, Andrei Petriaev, and Laura Černiauskaite. "Track structure reconstruction practice for the subgrade on weak foundation soil." In Fifth International Conference on Road and Rail Infrastructure. University of Zagreb Faculty of Civil Engineering, 2018. http://dx.doi.org/10.5592/co/cetra.2018.972.

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Farnsworth, Clifton B., Blaine Leonard, and Darin Sjoblom. "Quality Assurance of Soil Nail Grout for Provo Canyon Reconstruction Project." In Earth Retention Conference (ER) 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41128(384)26.

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Fitzpatrick, Aidan, Ajay Singhvi, and Amin Arbabian. "Spatial Reconstruction of Soil Moisture Content using Non-Contact Thermoacoustic Imaging." In 2020 IEEE SENSORS. IEEE, 2020. http://dx.doi.org/10.1109/sensors47125.2020.9278654.

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Aboudourib, A., M. Serhir, and D. Lesselier. "3D Reconstruction of Tree Roots under Heterogeneous Soil Conditions using Ground Penetrating Radar." In 10th International Workshop on Advanced Ground Penetrating Radar. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902596.

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