Relevant bibliographies by topics / Soil samples

Academic literature on the topic 'Soil samples'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Soil samples"

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Smutný, V., and J. Křen. "The effect of different soil core samplers on precision of estimating weed seedbank in soil." Plant, Soil and Environment 49, No. 10 (December 10, 2011): 466–72. http://dx.doi.org/10.17221/4158-pse.

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The effect of different soil sampling procedures on the precision of estimating the weed seedbank in soil using three soil core samplers with a circular base of 1.3, 6.4 and 8.0 cmin diameter was studied in a model experiment. The results showed the importance of a methodological approach. The soil sampler with a larger diameter is more useful for the objective assessment of the species spectrum (detection of seeds of all weed species in the soil). Furthermore, the value of the coefficient of variation (vx) decreases along with the increasing diameter of the soil sampler. The value of vx assessed in partial samples taken with a sampler of 1.3 cm diameter was double to three times higher than for soil samplers of 6.4 and 8.0 cm. The value of vx increased in individual weed species at decreasing seed frequency in individual partial samples from 17.82 to 316.23%. The soil core with the diameter of8.0 cm on the area of1 m2 is optimal for the exact research. To estimate the weed seedbank in soil in small-plot experiments, one partial sample on the area of5 m2 is recommended. To obtain comparable results, it is necessary to take a higher number of samples at a decreasing diameter of the soil sampler. Likewise, a larger amount of samples is needed to detect less abundant species.
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Jannuzzi, Graziella M. F., Fernando A. B. Danziger, and Ian S. M. Martins. "Surprising Soil Behaviour in Soil Sampling." Soils and Rocks 36, no. 3 (September 1, 2013): 265–74. http://dx.doi.org/10.28927/sr.363265.

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Thick wall (6.6 mm wall thickness) plastic samplers, 97.2 mm in internal diameter (area ratio of 29%), 700 mm in length (length of soil sample 640 mm), with a cutting edge angle of 23°, without clearance and with a sampler head have been used to collect very soft clay samples at Sarapuí II test site. Very good to excellent and good to fair quality samples have been surprisingly obtained in most cases, which were attributed to a combination of five factors: the absence of an inside clearance, the low friction of the plastic sampler, the small “trick” to close the top of the sampling rods assuring that suction would be imposed on the top of the sample, the very careful handling and trimming process, combined with no extrusion of the sample, and the small ratio between specimen diameter and sample diameter. It is still too early to propose the use of thick wall plastic samplers - in combination with the procedures outlined above - to be used in regular undisturbed soft clay sampling, and more research is needed to identify the role of each procedure in the final result. However, if confirmed, the procedures adopted will allow significant cost saving with respect to the use of thin wall brass (or stainless steel) samplers.
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Folegatti, Marcos Vinícius, René Porfirio Camponez do Brasil, and Flávio Favaro Blanco. "Sampling equipament for soil bulk density determination tested in a Kandiudalfic Eutrudox and a Typic Hapludox." Scientia Agricola 58, no. 4 (December 2001): 833–38. http://dx.doi.org/10.1590/s0103-90162001000400027.

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In spatial variability studies of soil physical properties the influence of different samplers on the results is seldomly taken into account. The objective of this work was to evaluate the performance of five different types of sampling equipment for soil bulk density determination, in two different soils a Kandiudalfic Eutrudox and a Typic Hapludox, both of Piracicaba, SP, Brazil. Equipment used for soil undisturbed sampling were: (i) Uhland soil sampler; (ii) Kopecky's Ring; (iii) soil core sampler, model "Soil Moisture"; (iv) soil core sampler Bravifer AI-50 and (v) soil core sampler Bravifer AI-100. The sampling was made in 4 grids of 1m², each with 25 sampling points, with five replications, resulting 100 samples for each soil. It was concluded that the sampling techniques can influence soil bulk density distributions, mainly in the case of clayey soils (Kandiudalfic Eutrudox). The Kopecky's Ring presented larger soil density values, overestimating this property for the two soils studied. The soil core sampler Bravifer AI-50 presented results closest to the overall average of the Typic Hapludox.
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SCHUPPLI, P. A. "TOTAL FLUORINE IN CSSC REFERENCE SOIL SAMPLES." Canadian Journal of Soil Science 65, no. 3 (August 1, 1985): 605–7. http://dx.doi.org/10.4141/cjss85-065.

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Total fluorine was measured in a variety of Canadian soils using the lithium metaborate-nitric acid solution technique in conjunction with the fluoride electrode. Total fluorine ranged from 90 to 1000 mg∙kg−1. Key words: Soil fluorine analysis, fluoride electrode, CSSC reference soil samples
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Ale, Temitayo Olamide. "EFFECT OF DRYING TEMPERATURE ON THE ENGINEERING PROPERTIES OF STABILISED AND NATURAL SOILS FOR ROAD CONSTRUCTION." Engineering Heritage Journal 6, no. 1 (2022): 01–05. http://dx.doi.org/10.26480/gwk.01.2022.01.05.

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The aim of this investigation is to determine the effect of drying temperature on the geotechnical properties of natural soils and stabilised soils. Soil samples were taken along Supare Akoko- Emure Ekiti road from three locations at the depth of 1m each. Soil sample for location 1 soil was taken from a stable section while soil samples from locations 2 & 3 were taken from the failed portions of the road. The following laboratory analysis were conducted on the soil samples; atterberg limit test, grain size analysis, Linear shrinkage, Specific gravity, Compaction test and California Bearing Ratio test (CBR). The results show that sampled soil from location 1 has better engineering properties than soil samples from Loc. 2 and 3. This is an indication that the soils of locations 2 & 3 contributed to the failing of the failed part. These three soil samples were further tested by adding 6% (of the total weight of the sampled soils) of Saw dust ash (SDA) and Fine Palm kernel shells (FPKSA) to the soil as stabilisers. Both the index and strength properties improved upon the addition of stabilizers with SDA proving to be a better stabiliser. Under varying temperature of pretest drying with stabilisers (SDA and FKPSA) and without stabiliser; the same engineering properties were considered. The results show that temperature plays a major role to better the properties of the soil.
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S. S. Patil, S. S. Patil, H. D. Gandhe H. D. Gandhe, and I. B. Ghorade I. B.Ghorade. "Physicochemical Properties of Soil Samples of Ahmednagar Industrial Area." Global Journal For Research Analysis 3, no. 4 (June 15, 2012): 81–82. http://dx.doi.org/10.15373/22778160/apr2014/26.

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Plewes, Howard D., V. Sitham Pillai, Michael R. Morgan, and Brian L. Kilpatrick. "In situ sampling, density measurements, and testing of foundation soils at Duncan Dam." Canadian Geotechnical Journal 31, no. 6 (December 1, 1994): 927–38. http://dx.doi.org/10.1139/t94-108.

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As part of the B.C. Hydro Dam Safety Review of Duncan Dam, a comprehensive two-phased program of field and laboratory investigations was carried out between 1988 and 1992 to evaluate the potential for liquefaction of the foundation soils during an earthquake. The initial screening level phase 1 field investigations comprised basic soil sampling, standard penetration tests, and cone penetration tests to determine the spatial distribution of the foundation soils beneath the dam and to characterize the basic engineering properties of the soil units. A screening study using Seed's liquefaction assessment method indicated that soil unit 3c consisting of uniform fine-grained sand would be susceptible to liquefaction. The phase 2 investigations consisted of detailed and careful soil sampling to obtain high-quality in situ samples of the unit 3c sand for laboratory triaxial and simple shear tests. Samples were obtained using a conventional fixed piston sampler and a specially modified Christensen double core barrel sampler. The samples were frozen to minimize sample disturbance during handling and transport. Ground freezing was also conducted using liquid nitrogen, and the frozen soil was sampled using a CRREL core barrel. Borehole density logging was performed to assess the quality and level of disturbance of the soil samples. This paper discusses the procedures and results of the phases 1 and 2 field investigations. Key words : standard penetration test, cone penetration test, geophysical logging, energy calibration, soil sampling, freezing.
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Dunnebacke, Thelma H., Frederick L. Schuster, Shigeo Yagi, and Gregory C. Booton. "Balamuthia mandrillaris from soil samples." Microbiology 150, no. 9 (September 1, 2004): 2837–42. http://dx.doi.org/10.1099/mic.0.27218-0.

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Balamuthia mandrillaris amoebas are recognized as a causative agent of granulomatous amoebic encephalitis, a disease that is usually fatal. They were first recognized when isolated from the brain of a mandrill baboon that died in the San Diego Zoo Wild Life Animal Park. Subsequently, the amoebas have been found in a variety of animals, including humans (young and old, immunocompromised and immunocompetent persons), in countries around the world. Until recently, the amoebas had not been recovered from the environment and their free-living status was in question. The recovery of a Balamuthia amoeba from a soil sample taken from a plant at the home of a child from California, USA, who died of Balamuthia amoebic encephalitis, was reported previously. In a continued investigation, a second amoeba was isolated from soil that was obtained from an outdoor potted plant in a spatially unrelated location. A comparison of these two environmental amoebas that were isolated from different soils with the amoeba that was obtained from the child's clinical specimen is reported here. Included are the isolation procedure for the amoebas, their growth requirements, their immunological response to anti-Balamuthia serum, their sensitivity to a selection of antimicrobials and sequence analysis of their 16S rRNA gene. The evidence is consistent that the amoebas isolated from both soil samples and the clinical isolate obtained from the Californian child are B. mandrillaris.
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Jiří, Zbíral, Smatanová Michaela, and Němec Pavel. "Sulphur status in agricultural soils determined using the Mehlich 3 method." Plant, Soil and Environment 64, No. 6 (May 31, 2018): 255–59. http://dx.doi.org/10.17221/142/2018-pse.

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Several sets of soil samples were chosen to demonstrate the applicability of the Mehlich 3 extractant for the determination of sulphur (S) in soils. Archived samples from 139 basal soil monitoring plots (BSMS) sampled in 1995 and 2013, samples from eleven long-term field trials sampled in 1981 and 2017, 1167 soil samples from the areas vulnerable to S losses and 720 samples from the non-vulnerable areas sampled in 2010 were chosen for the experiments. Mehlich 3 clearly showed a statistically highly significant decrease in the soil S content caused by reduction of SO<sub>2</sub> emissions in the long-term field experiments from 33 mg/kg in 1981 to 8 mg/kg in 2017 for the median of the untreated controls. Similar results were obtained for BSMS samples, where an average decrease from 26 mg/kg in 1995 to 17 mg/kg in 2013 was found. Mehlich 3 also showed that more than 52% of samples from the areas vulnerable to S losses were in a very low content category in contrast to only 3% of soils from the other areas. Mehlich 3 clearly proved the capacity to distinguish changes in the content of soil S in all studied cases.
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Giesler, R., and U. Lundström. "Soil Solution Chemistry: Effects of Bulking Soil Samples." Soil Science Society of America Journal 57, no. 5 (September 1993): 1283–88. http://dx.doi.org/10.2136/sssaj1993.03615995005700050020x.

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Dissertations / Theses on the topic "Soil samples"

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Arroyo, Marcos. "Pulse tests in soil samples." Thesis, University of Bristol, 2001. http://hdl.handle.net/1983/25e7e542-94f3-49f3-ba6f-36df35f5e0e2.

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Gustavsson, Björn. "Heterogeneities in samples of contaminated soil /." Luleå : Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1544/2007/52/.

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Gustavsson, Björn. "Heterogeneities in samples of contaminated soil." Doctoral thesis, Luleå tekniska universitet, Geovetenskap och miljöteknik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25775.

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Many factors are important during sampling of contaminated soil. One of these is the sample sizes used. By estimation of the Heterogeneity Invariant (HI) it is possible to balance the sample size to one uncertainty contribution that is attached to sampling and sample handling. This is called the Fundamental error. Large overestimation of HI leads to larger samples and increased cost for sample handling. Large underestimation of HI leads to too small samples and to a larger uncertainty contribution, and possible skewed samples. Some methods to estimate HI is described and discussed from the perspective of contaminated soil sampling. Contaminated soil is a widely used concept, it is quite different challenges to sample if the contaminant is e.g. metallic particles, in-evaporated solutions or oils. None of the discussed methods is without any limitation. Field portable X-ray spectroscopy fluorescence is (XRF) is a popular instrument to analyse for metals in contaminated soils. It can provide quick and cheap analysis. The most prepared samples are dried, ground finely and put into Mylar thin film XRF sample cups. The sample volume is about 5-7 cm3, but the actually measured volume is only a fraction thereof. In the, likely, case of segregation in the sample volume this can lead to a biased measurement. Mechanisms for segregation in the XRF sample cup are discussed. Further suggestions are made to reduce the segregation. Despite precautions to reduce the effect of segregation it is difficult to eliminate it.
Godkänd; 2007; 20071113 (ysko)
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Payne, Rosara Faith. "Investigation of radiological contamination of soil samples from Idaho National Laboratory." Diss., Online access for everyone, 2006. http://www.dissertations.wsu.edu/Dissertations/Summer2006/r%5Fpayne%5F053106.pdf.

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Barker, Anthony David Purslove. "The damage potential of the root-lesion nematode Pratylenchus bolivianus in the UK." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312235.

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Wang, Yuanyuan. "Analysis of soil samples from polluted mining areas." Thesis, University of Reading, 2016. http://centaur.reading.ac.uk/68856/.

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Al, Razzaz Salim. "Soil Analysis for samples from the hill-fort of Hedeby." Thesis, Stockholms universitet, Arkeologiska forskningslaboratoriet, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-118399.

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Hedeby Hochburg, borgen i Hedeby, har fått förhållandevis lite uppmärksamhet, jämfört med själva samhället i Hedeby. Utgrävningen från 2012 har dock väckt ett intresse, med ett antal frågor som behöver besvaras. I denna uppsats analyseras jordprover som samlats under utgrävningen, för att se om de kan visa något om den kronologiska relationen mellan borgvallen och gravarna i borgen. Tre metoder användes, FTIR (Fourier Transform Infrared Spectroscopy), röntgendiffraktion (XRD) och röntgenfluorescens (XRF). Resultaten från XRF och XRD visar på en rumslig relation mellan minst en av vallens konstruktionsfaser och nedsänkningen i ett lager innanför vallen. Relationen med gravarna är inte tydlig än, och analysen gav inga kronologiska ledtrådar. Resultatet kan användas som hypotes för vidare prövning i framti
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Phillips, Tom. "Detection of Phytophthora cinnamomi from bulk water and soil samples." Thesis, Phillips, Tom (2008) Detection of Phytophthora cinnamomi from bulk water and soil samples. Honours thesis, Murdoch University, 2008. https://researchrepository.murdoch.edu.au/id/eprint/32595/.

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Chatreewongsin, Urai. "Metal Extraction From Soil Samples By Chelation in a Microwave System." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/26982.

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This work involves the combination of chelation and microwave extraction as a technique for extracting adsorbed metals in soil. It has been termed in this work, Chelate Assisted Microwave Extraction (CAME). Unlike other extraction methods, CAME is able to differentiate between anthropological and geological trace metals. The method has been applied to major sample matrices included three types of soils (Bertie Sandy Loam, Davidson Silty Clay, and Davidson Clayey Loam) as well as sea sand, alumina, and iron oxide. In order to investigate the effects of sorptive coatings on metal concentrations, a sample set was first treated with humic acids, which represented organic coated materials. Afterwards, copper (II) solutions were spiked to both untreated and treated matrices and the efficiencies of recoveries were studied. Metal determinations were performed by Inductively Coupled Plasma-Atomic Emission Spectrophotometry (ICP-AES). Initial studies of control (untreated soil) and long-term Cu amended (spiked) Bertie Sandy Loam (BSL) indicated that extraction efficiencies were method dependent. Ethylenediaminetetraacetic acid (EDTA) was a primary chelating agent used for method comparisons. Extracting solutions having a pH range from 7.8 to 10.1 did not affect the EDTA-microwave method, but the increase in pH enhanced Cu removal by the EDTA-shaking extraction method which was a conventional chelation using a mechanical shaker. With the EDTA-microwave method, complete extraction was achieved in a short period of time (20 minutes). Compared to the EDTA-shaking method using two sandy soils, the EDTA-microwave method proved to be more efficient in extracting sorbed metals in soils (5.9 vs. 4.6 µg/g for the control BSL and 37.5 vs. 27.8 µg/g for the amended BSL. FT-IR and C13 NMR were used to characterize extracted and commercially available humic acids. The latter was employed to prepare the humate coated materials. Iron oxide containing materials such as Davidson Silty Clay (DSC), Davidson Clayey Loam (DCL), and iron oxide (Fe2O3), showed extremely high adsorption capabilities for humic acids, while sea sand, Bertie Sandy Loam, and alumina (Al₂O₃) provided lower adsorption capabilities for humic acids. Two sets of uncoated and humate coated materials were used for Cu spiking procedures using 0.001 M Cu (II) at pH 5.3 for 24 hour-equilibration. Three original soils and alumina showed high adsorption capabilities for Cu (II). The presence of coated humate helped increase Cu adsorption capabilities of these soils, but diminished the ability of alumina to react with Cu (II) ions. For HA-uncoated matrices, iron oxide had a higher Cu adsorption capability than sea sand but less than real soils. Humate coating improved Cu adsorption capabilities of not only real soils but iron oxide and sea sand as well. Lastly, the developed method named Chelate Assisted Microwave Extraction (CAME) was further examined and optimized. Several samples were investigated for extraction efficiencies. A two-step extraction, applying 120 W for 5 min followed by 60 W for 10 min, was efficient in removing sorbed metals from different matrices regardless of sorptive oxide and organic components. Concentrations of chelating agents slightly affected percent metal removal; however, there was no significant difference in results obtained using EDTA or diethylenetriaminepentaacetic acid (DTPA). Recoveries of spiked metals (Cu and Cd) ranged from 96 to 107%. Using the untreated (control) Davidson Silty Clay and Bertie Sandy Loam, the comparison of other chelating solutions were made. Clearly, CAME was promising and proved to be a good alternative to classical shaking method for extracting adsorbed metals from soils.
Ph. D.
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Tristan-Montero, Emma Esther. "Human health risk assessment for contaminated land in historical mining areas." Thesis, Imperial College London, 2000. http://hdl.handle.net/10044/1/7343.

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Books on the topic "Soil samples"

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Micic, Miodrag, ed. Sample Preparation Techniques for Soil, Plant, and Animal Samples. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-3185-9.

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Learned, Robert Eugene. Analytical results and sample locality map of soil samples from the Río Viví porphyry copper district, Municipios of Utuado and Adjuntas, Puerto Rico. [Menlo Park, Calif.?]: U.S. Dept. of the Interior, Geological Survey, 1992.

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Hewitt, Alan D. Preparing soil samples for volatile organic compound analysis. Hanover, N.H: US Army Corps of Engineers, Cold Regions Research and Engineering Laboratory, 1997.

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Whitton, J. S. Standard methods for mineral analysis of soil survey samples for characterisation and classificaion in NZ Soil Bureau. Lower Hutt, N.Z: NZ Soil Bureau, Dept. of Scientific and Industrial Research, 1987.

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Hewitt, Alan D. Storage and preservation of soil samples for volatile compound analysis. Hanover, N.H: U.S. Army Cold Regions Research and Engineering Laboratory, 1999.

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Goltz, Douglas M. Microwave dissolution of soil samples for the determination of arsenic. Sudbury, Ont: Laurentian University, 1986.

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Gosen, B. S. Van. Geochemistry of soil samples from 50 solution-collapse features on the Coconino Plateau, northern Arizona. [Denver, CO]: U.S. Geological Survey, 1991.

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Gosen, B. S. Van. Geochemistry of soil samples from 50 solution-collapse features on the Coconino Plateau, northern Arizona. [Denver, CO]: U.S. Geological Survey, 1991.

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Grant, Clarence L. Comparison criteria for environmental chemical analyses of split samples sent to different laboratories: Corps of Engineers archived data. [Hanover, N.H.]: US Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, 1996.

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Walsh, Marianne E. Method for producing performance evaluation soil/sediment samples for white phosphorus analysis. Hanover, N.H: US Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, 1996.

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Book chapters on the topic "Soil samples"

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Hesser, F. B., and L. Straaten. "Computer Aided Evaluation of Groundwater Samples." In Soil & Environment, 211–12. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0415-9_41.

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Min, Jisook, Kiwook Kim, Sangcheol Heo, and Yurim Jang. "Forensic Comparison of Soil Samples." In Soil in Criminal and Environmental Forensics, 71–105. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-33115-7_6.

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Wadoux, Alexandre M. J. C., Brendan Malone, Budiman Minasny, Mario Fajardo, and Alex B. McBratney. "Selection of the Samples for Laboratory Analysis." In Progress in Soil Science, 143–64. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64896-1_8.

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Darskus, R., H. Schlesing, C. Von Holst, and R. Wallon. "Rapid Screening of Soil Samples for Chlorinated Organic Compounds." In Contaminated Soil ’90, 795–96. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-3270-1_173.

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Vogel-Mikuš, Katarina, Peter Kump, Marijan Nečemer, Primož Pelicon, Iztok Arčon, Paula Pongrac, Bogdan Povh, and Marjana Regvar. "Quantitative Analyses of Trace Elements in Environmental Samples: Options and (Im)possibilities." In Soil Biology, 113–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02436-8_6.

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Konrad, J. M., and S. Dubeau. "Cyclic Strength of Stratified Soil Samples." In Submarine Mass Movements and Their Consequences, 47–57. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0093-2_6.

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Lien, Dinh Thi, Z. Szeglowski, H. Gondunova, Dang Duc Nhan, Le Khanh Phon, Luu Tam Bat, and Lam Vinh Anh. "Radioecological Analysis of Vietnam Soil Samples." In Radionuclides and Heavy Metals in Environment, 93–100. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0993-5_15.

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Toland, Alexandra, and Gerd Wessolek. "Core Samples of the Sublime—On the Aesthetics of Dirt." In Soil and Culture, 239–57. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2960-7_15.

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Albero, Beatriz, Rosa Ana Pérez, and José L. Tadeo. "Determination of Pesticides in Soil." In Analysis of Pesticides in Food and Environmental Samples, 245–70. Second edition. | Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9781351047081-8.

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Blankenhorn, Iris. "A Comparison of Methods for the PAH-Analysis in Solid Samples." In Contaminated Soil ’90, 811–15. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-3270-1_181.

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Conference papers on the topic "Soil samples"

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"Stabilization of Black Cotton Soil with Groundnut Shell Ash." In Recent Advancements in Geotechnical Engineering. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901618-6.

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Abstract. The analysis of GSA for the stabilization of soil samples is the subject of this research paper. In recent years, soil stabilization techniques have been effective in improving the shear strength parameters of poor soils. GSA is a naturally occurring substance that causes human health and environmental issues. Physical properties of soil were calculated, including Atterberg's limits, compaction characteristics, and strength characteristics of virgin soil samples. GSA was applied to the soil in various percentages (2 to 10 percent). The soil sample's intensity increased up to 6% before decreasing. It is clear that 6% of GSA to the soil is an optimum percentage and it leads to an increase in shear strength and bearing capacity in expansive soil.
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Cicatelli, A., F. Guarino, S. Castiglione, A. Di Luca, D. Esposito, M. Grimaldi, and B. Bisceglia. "Microwave treatment of agricultural soil samples." In 2015 IEEE 15th Mediterranean Microwave Symposium (MMS). IEEE, 2015. http://dx.doi.org/10.1109/mms.2015.7375453.

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Mahabadi, Nariman, Dirk BeGell, Xianglei Zheng, Leon van Paassen, and Jaewon Jang. "The Soil Water Characteristic Curve for 3D Printed Soil Samples." In Second Pan-American Conference on Unsaturated Soils. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481684.008.

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Elzowawi, A., A. Haddad, H. Griffiths, and D. Clark. "Investigation of soil ionization propagation in two-layer soil samples." In 2015 50th International Universities Power Engineering Conference (UPEC). IEEE, 2015. http://dx.doi.org/10.1109/upec.2015.7339782.

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David, Charles Nicole A., Jeremy V. Yumol, Ramon G. Garcia, and Alejandro H. Ballado. "Swarm Robotics Application for Gathering Soil Samples." In 2021 IEEE 13th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management (HNICEM). IEEE, 2021. http://dx.doi.org/10.1109/hnicem54116.2021.9731882.

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"Experimental Study on Soil Stabilization Using Fibres." In Recent Advancements in Geotechnical Engineering. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901618-25.

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Abstract. For pavement constructions such as runway and highway construction, fine-grained soils are not suitable because of their undesirable properties such as grading of particle size, low bearing capacity, and more plasticity, and its ability to swell. To improve these soil properties various soil stabilization methods are needed. The stabilization is done by adding various stabilizing materials with the fine-grained soil. Fibres are one of the materials used in soil stabilization. This experimental study has been carried over to improve the bearing capacity of soft soil (from Sholinganallur, Chennai) by using Natural and Artificial fibres. During this study, the soil samples which has been stabilized with various fibres was prepared i.e., soil with Natural fibres (jute fibre) and soil with artificial fibres. In this experimental study, index properties and engineering properties of soft soil or unreinforced samples and stabilized soil samples with fibres are determined. Samples are subjected to various soil tests which have been used to determine the engineering properties of soil. The soil tests such as the standard proctor compaction test, unsoaked California Bearing Ratio (CBR) test, and Unconfined Compression (UCC) test had been done to determine the characteristics of the samples. To determine the properties of the reinforced materials, the fibres also have undergone various geosynthetic laboratory tests. The results of the study show that the bearing capacity of Shollinganallur fine-grained soil can be improved subsequently and water absorption by soil has been reduced significantly by using fibres.
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Okolelova, Alla, and Galina Egorova. "THE FACTORS INCREASING THE OBJECTIVE ASSESSMENT OF OIL PRODUCTS IN SOIL." In Land Degradation and Desertification: Problems of Sustainable Land Management and Adaptation. LLC MAKS Press, 2020. http://dx.doi.org/10.29003/m1716.978-5-317-06490-7/235-240.

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Natural objective reasons significantly complicate the objective assessment of oil products in soils: a variety of chemical forms of the pollutants connection, the soil ability to self-healing and self-cleaning, provincial features of the soil cover, lack of objective criteria.To increase the objectivity of determining the presence of oil products in soils, it is proposed to take into account the following factors: analysis methods of soils contaminated with oil products, the chemical properties of extractants extracting oil products from soil samples, the content of soil organic carbon and nonspecific organic compounds in conditionally unpolluted and oil-polluted soils, an increase in organic carbon in soils contaminated with petroleum products, units of measurement (% or mg / kg), the soil horizonin which soil samples were taken, the presence of discrepancies in GOST standards on the standardization of pollutants of organic origin in soils, the state of modern rationing of oil and oil products in soils and the terminological aspect.
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Bhatia, Sudha, Reshmi S. Nair, and Ved Prakash Mishra. "Nutrient Analysis of Soil Samples Treated with Agrochemicals." In 2021 International Conference on Computational Intelligence and Knowledge Economy (ICCIKE). IEEE, 2021. http://dx.doi.org/10.1109/iccike51210.2021.9410729.

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Viecelli, N. C., R. P. Baldasso, K. L. Manfredini, and I. N. Filho. "Bisphenol A in two kinds of soil samples." In International Conference on Environmental Science and Biological Engineering. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/esbe140481.

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Owsik, Jan, Jacek Janucki, Karol Jach, Robert Swierczynski, Viacheslaw S. Ivanov, Andrei F. Kotyuk, and Michael V. Ulanovski. "LIBS system for elemental analysis of soil samples." In Lasers and Applications in Science and Engineering, edited by Peter E. Powers. SPIE, 2005. http://dx.doi.org/10.1117/12.590101.

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Reports on the topic "Soil samples"

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Sinkov, Sergei I., and Gregg J. Lumetta. Sonochemical Digestion of Soil and Sediment Samples. Office of Scientific and Technical Information (OSTI), October 2006. http://dx.doi.org/10.2172/893671.

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Allan, M. L., and L. E. Kukacka. Analysis of core samples from jet grouted soil. Office of Scientific and Technical Information (OSTI), October 1995. http://dx.doi.org/10.2172/188527.

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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), November 1992. http://dx.doi.org/10.2172/7064388.

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Dodd, M. Metal bioaccessibility in Tri-National survey soil samples. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2011. http://dx.doi.org/10.4095/287971.

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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), November 1992. http://dx.doi.org/10.2172/10107503.

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Hewitt, Alan D. Storage and Preservation of Soil Samples for Volatile Compound Analysis. Fort Belvoir, VA: Defense Technical Information Center, May 1999. http://dx.doi.org/10.21236/ada363601.

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Clausen, Jay, Richard Hark, Russ Harmon, John Plumer, Samuel Beal, and Meghan Bishop. A comparison of handheld field chemical sensors for soil characterization with a focus on LIBS. Engineer Research and Development Center (U.S.), February 2022. http://dx.doi.org/10.21079/11681/43282.

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Commercially available handheld chemical analyzers for forensic applications have been available for over a decade. Portable systems from multiple vendors can perform X-ray fluorescence (XRF) spectroscopy, Raman spectroscopy, Fourier transform infrared(FTIR) spectroscopy, and recently laser-induced breakdown spectroscopy (LIBS). Together, we have been exploring the development and potential applications of a multisensor system consisting of XRF, Raman, and LIBS for environmental characterization with a focus on soils from military ranges. Handheld sensors offer the potential to substantially increase sample throughput through the elimination of transport of samples back to the laboratory and labor-intensive sample preparation procedures. Further, these technologies have the capability for extremely rapid analysis, on the order of tens of seconds or less. We have compared and evaluated results from the analysis of several hundred soil samples using conventional laboratory bench top inductively coupled plasma atomic emission spectroscopy (ICP-AES) for metals evaluation and high-performance liquid chromatography (HPLC) and Raman spectroscopy for detection and characterization of energetic materials against handheld XRF, LIBS, and Raman analyzers. The soil samples contained antimony, copper, lead, tungsten, and zinc as well as energetic compounds such as 2,4,6-trinitrotoluene(TNT), hexahydro-1,3,5-triazine (RDX), nitroglycerine (NG), and dinitrotoluene isomers (DNT). Precision, accuracy, and sensitivity of the handheld field sensor technologies were compared against conventional laboratory instrumentation to determine their suitability for field characterization leading to decisional outcomes.
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Clausen, Jay, Samuel Beal, Thomas Georgian, Kevin Gardner, Thomas Douglas, and Ashley Mossell. Effects of milling on the metals analysis of soil samples containing metallic residues. Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41241.

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Metallic residues are distributed heterogeneously onto small-arms range soils from projectile fragmentation upon impact with a target or berm backstop. Incremental Sampling Methodology (ISM) can address the spatially heterogeneous contamination of surface soils on small-arms ranges, but representative kilogram-sized ISM subsamples are affected by the range of metallic residue particle sizes in the sample. This study compares the precision and concentrations of metals in a small-arms range soil sample processed by a puck mill, ring and puck mill, ball mill, and mortar and pestle prior to analysis. The ball mill, puck mill, and puck and ring mill produced acceptable relative standard deviations of less than 15% for the anthropogenic metals of interest (Lead (Pb), Antimony (Sb), Copper (Cu), and Zinc (Zn)), with the ball mill exhibiting the greatest precision for Pb, Cu, and Zn. Precision by mortar and pestle, without milling, was considerably higher (40% to >100%) for anthropogenic metals. Media anthropogenic metal concentrations varied by more than 40% between milling methods, with the greatest concentrations produced by the puck mill, followed by the puck and ring mill and then the ball mill. Metal concentrations were also dependent on milling time, with concentrations stabilizing for the puck mill by 300 s but still increasing for the ball mill over 20 h. Differences in metal concentrations were not directly related to the surface area of the milled sample. Overall, the tested milling methods were successful in producing reproducible data for soils containing metallic residues. However, the effects of milling type and time on concentrations require consideration in environmental investigations.
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Lazo, E. N. Determination of radionuclide concentrations of U and Th in unprocessed soil samples. Office of Scientific and Technical Information (OSTI), January 1988. http://dx.doi.org/10.2172/6131685.

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Gantzer, Clark J., Shmuel Assouline, and Stephen H. Anderson. Synchrotron CMT-measured soil physical properties influenced by soil compaction. United States Department of Agriculture, February 2006. http://dx.doi.org/10.32747/2006.7587242.bard.

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Methods to quantify soil conditions of pore connectivity, tortuosity, and pore size as altered by compaction were done. Air-dry soil cores were scanned at the GeoSoilEnviroCARS sector at the Advanced Photon Source for x-ray computed microtomography of the Argonne facility. Data was collected on the APS bending magnet Sector 13. Soil sample cores 5- by 5-mm were studied. Skeletonization algorithms in the 3DMA-Rock software of Lindquist et al. were used to extract pore structure. We have numerically investigated the spatial distribution for 6 geometrical characteristics of the pore structure of repacked Hamra soil from three-dimensional synchrotron computed microtomography (CMT) computed tomographic images. We analyzed images representing cores volumes 58.3 mm³ having average porosities of 0.44, 0.35, and 0.33. Cores were packed with < 2mm and < 0.5mm sieved soil. The core samples were imaged at 9.61-mm resolution. Spatial distributions for pore path length and coordination number, pore throat size and nodal pore volume obtained. The spatial distributions were computed using a three-dimensional medial axis analysis of the void space in the image. We used a newly developed aggressive throat computation to find throat and pore partitioning for needed for higher porosity media such as soil. Results show that the coordination number distribution measured from the medial axis were reasonably fit by an exponential relation P(C)=10⁻C/C0. Data for the characteristic area, were also reasonably well fit by the relation P(A)=10⁻ᴬ/ᴬ0. Results indicates that compression preferentially affects the largest pores, reducing them in size. When compaction reduced porosity from 44% to 33%, the average pore volume reduced by 30%, and the average pore-throat area reduced by 26%. Compaction increased the shortest paths interface tortuosity by about 2%. Soil structure alterations induced by compaction using quantitative morphology show that the resolution is sufficient to discriminate soil cores. This study shows that analysis of CMT can provide information to assist in assessment of soil management to ameliorate soil compaction.
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