Bibliografías temáticas / Soil resistance

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Literatura académica sobre el tema "Soil resistance"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 1 de febrero de 2022

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Artículos de revistas sobre el tema "Soil resistance"

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Mamatov, Farmon. "Traction Resistance of Soil Submersibility Type "Paraplau"". Journal of Advanced Research in Dynamical and Control Systems 12, SP7 (25 de julio de 2020): 2154–61. http://dx.doi.org/10.5373/jardcs/v12sp7/20202336.

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Rab, MA, KA Olsson y ST Willatt. "Resistance to water uptake by irrigated potatoes on a duplex soil". Soil Research 28, n.º 4 (1990): 487. http://dx.doi.org/10.1071/sr9900487.

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Resistances to water flow were analysed for the soil-root system of a potato crop growing on a duplex soil-where soil hydraulic properties varied with depth-under two irrigation regimes: 'wet' (irrigated weekly) and 'dry' (irrigated twice only during the growing season). The relative magnitudes of the soil and plant resistances controlling root water uptake were evaluated over depth and time using field-measured soil hydraulic properties and root length densities in successive soil layers. Resistance to water flow in the root system is likely to be the dominant resistance in the liquid phase, although soil resistance increased more rapidly than plant resistance with decreasing soil-water matric potential and root length density. Soil resistance reached similar values to plant resistance only when the soil-water matric potential was in the range -900 kPa to -1500 kPa (corresponding soil hydraulic conductivities of 10-7 and 10-8 m day-1 respectively), depending on the root length beneath unit ground area in the soil layer, La. Poor utilization of water from depth of this soil was attributed to resistance in the root system (possibly radial) associated with low La. Practical considerations for improved water management of the potato crop on clay soils are discussed.
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Pink, D. A. C. y P. Hand. "Plant resistance and strategies for breeding resistant varieties". Plant Protection Science 38, SI 1 - 6th Conf EFPP 2002 (1 de enero de 2002): S9—S14. http://dx.doi.org/10.17221/10310-pps.

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An explanation of the ‘boom-bust’ cycle of resistance breeding was provided by the gene-for-gene relationship between a pathogen and its host. Despite this understanding, most R genes continued to be deployed singly and resistance has been ephemeral. The reasons for breeding ‘single R gene’ varieties are discussed. Alternative strategies for the deployment of R genes and the use of quantitative race non-specific resistance have been advocated in order to obtain durable resistance. The feasibility of both of these approaches is discussed taking into account the impact of technologies such as plant transformation and marker-assisted selection. A change in focus from durability of the plant phenotype to that of the crop phenotype is advocated.
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Dixon, G. R. "Interactions of soil nutrient environment, pathogenesis and host resistance". Plant Protection Science 38, SI 1 - 6th Conf EFPP 2002 (1 de enero de 2002): S87—S94. http://dx.doi.org/10.17221/10326-pps.

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Host plants and soil borne pathogens that attack them exist within an ecological matrix populated by numerous microbial species that may influence the access of pathogenesis. These events are moderated by physical and chemical components of the soil. The impact of inorganic and organic nutrients on pathogenesis and the development of host resistance are discussed in this review using two host – pathogen combinations as examples. Calcium, boron, nitrogen and pH have been demonstrated to affect the processes of resting spore germination, host invasion and colonisation in the Plasmodiophora brassicae-Brassica combination that results in clubroot disease. Organic nutrients that have associated biostimulant properties have been demonstrated to influence the development of Pythium ultimum-Brassica combination that results in damping-off disease. This latter combination is affected by the presence of antagonistic microbial flora as demonstrated by increased ATP, extra-cellular enzyme and siderophore production. In both examples there are indications of the manner by which host resistance to pathogenesis may be enhanced by changes to the nutrient status surrounding host plants. These effects are discussed in relation to the development of integrated control strategies that permit disease control with minimal environmental impact.
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Ismail, Fauzilah, Mazidah Mukri y Zainab Mohamed. "Assessment of Soil Dispersibility Behaviour In-Relation to Soil Internal Erosion Resistance". Scientific Research Journal 5, n.º 1 (30 de junio de 2008): 39. http://dx.doi.org/10.24191/srj.v5i1.5652.

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A study was conducted to assess soil dispersibility behaviour in-relation to soil internal erosion resistance. Dispersive soils can be a problem for many geotechnical projects and structures. Water flowing in a crack of earth dam or infiltration of rainwater through the crack of slope surface with enough erosion energy can detach the soil particles into suspension and transport it along the movement that will lead to internal erosion process. Soil samples from sloping area within UiTM Shah Alam Campus were collected and a laboratory study was carried out to assess the soil dispersibility behaviour. A laboratory pinhole test and crumb test were conducted to identify soils which are easily dispersed hence susceptible to internal erosion. Indication of the removal of soil particles during testing is a factor in assessing the possibility of internal erosion. Fine-grained soils are known to have low resistance to erosion however laboratory result shows that soils fraction with high coarse-grained percentage has high dispersibility grade that lead to lower internal soil erosion resistance whereas the high moisture content percentage would enhance the dispersibility characteristic of the soils performance.
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Cotching, W. E. y K. C. Belbin. "Assessment of the influence of soil structure on soil strength/soil wetness relationships on Red Ferrosols in north-west Tasmania". Soil Research 45, n.º 2 (2007): 147. http://dx.doi.org/10.1071/sr06113.

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The relationship of soil wetness to soil strength in Red Ferrosols was compared between fields of well structured to degraded soil structure. Soil structure was assessed using a visual rating. Soil resistance measurements were taken over a range of soil wetness, using a recording penetrometer. Readings were taken as the soil dried by evapotranspiration after both irrigation and rainfall events. The influence of soil wetness on penetration resistance was greater on fields with degraded structure than on well-structured fields. In fields with degraded structure, the wetter the soil, the smaller were the penetration resistance values. Field soil structure score was negatively correlated with the slope of the line relating soil wetness and penetration resistance at 150–300 mm depth. The structurally degraded fields had a highly significant relationship between penetration resistance and soil wetness at 150–300 mm depth. In well-structured fields, variations in soil wetness had less effect on penetration resistance. These results indicate that visual assessment can be used with confidence to assess Ferrosol structure. The implications for soil management are that fields with degraded soil structure have greater resistance to root growth at drier moisture contents than well-structured fields. Consequently, farmers need to keep degraded soils wetter with more frequent irrigation than well-structured soils, to ensure optimum plant growth.
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Lee, Jung Hun, Kwang Seung Park, Jeong Ho Jeon y Sang Hee Lee. "Antibiotic resistance in soil". Lancet Infectious Diseases 18, n.º 12 (diciembre de 2018): 1306–7. http://dx.doi.org/10.1016/s1473-3099(18)30675-3.

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Izzo, Michael Z. y Marta Miletić. "Sustainable Improvement of the Crack Resistance of Cohesive Soils". Sustainability 11, n.º 20 (19 de octubre de 2019): 5806. http://dx.doi.org/10.3390/su11205806.

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Desiccation cracking of cohesive soils is the development of cracks on the soil surface as a result of a reduction in the soil moisture content. The decrease in soil surface area owing to the desiccation of cohesive soils has an undesirable impact on the mechanical, hydrological, thermal, and physico-chemical properties. Many efforts have been made to improve the desiccation crack resistance of cohesive soils, but the current solutions raise a number of environmental issues, increasing the demand for sustainable soil improvement alternatives. Therefore, the main objective of this study is to investigate novel eco-friendly soil improvement techniques, such as recycled carpet fibers and a gelatin-based bioplastic, and their effect on desiccation cracking in cohesive soils. The improvement of soil crack resistance was studied by conducting desiccation cracking tests on plain and improved soils. In addition, image processing was conducted to quantitatively describe the effect of soil improvement type on the geometrical characteristics of crack patterns. Each soil improvement technique enhanced the soil strength and reduced cracking at room temperature, at an elevated temperature, and when subjecting to cyclic wetting and drying. The addition of bioplastics proved to be the most effective solution, thus demonstrating a viable option to advance future sustainable engineering practices.
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Popowska, Magdalena, Marzenna Rzeczycka, Antoni Miernik, Agata Krawczyk-Balska, Fiona Walsh y Brion Duffy. "Influence of Soil Use on Prevalence of Tetracycline, Streptomycin, and Erythromycin Resistance and Associated Resistance Genes". Antimicrobial Agents and Chemotherapy 56, n.º 3 (27 de diciembre de 2011): 1434–43. http://dx.doi.org/10.1128/aac.05766-11.

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ABSTRACTThis study examined differences in antibiotic-resistant soil bacteria and the presence and quantity of resistance genes in soils with a range of management histories. We analyzed four soils from agricultural systems that were amended with manure from animals treated with erythromycin and exposed to streptomycin and/or oxytetracycline, as well as non-manure-amended compost and forest soil. Low concentrations of certain antibiotic resistance genes were detected using multiplex quantitative real-time PCR (qPCR), withtet(B),aad(A), andstr(A) each present in only one soil andtet(M) andtet(W) detected in all soils. The most frequently detected resistance genes weretet(B),tet(D),tet(O),tet(T), andtet(W) for tetracycline resistance,str(A),str(B), andaacfor streptomycin resistance, anderm(C),erm(V),erm(X),msr(A),ole(B), andvgafor erythromycin resistance. Transposon genes specific for Tn916, Tn1549, TnB1230, Tn4451, and Tn5397were detected in soil bacterial isolates. The MIC ranges of isolated bacteria for tetracycline, streptomycin, and erythromycin were 8 to >256 μg/ml, 6 to >1,024 μg/ml, and 0.094 to >256 μg/ml, respectively. Based on 16S rRNA gene similarity, isolated bacteria showed high sequence identity to genera typical of soil communities. Bacteria with the highest MICs were detected in manure-amended soils or soils from agricultural systems with a history of antibiotic use. Non-manure-amended soils yielded larger proportions of antibiotic-resistant bacteria, but these had lower MICs, carried fewer antibiotic resistance genes, and did not display multidrug resistance (MDR).
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Stella, P., B. Loubet, C. de Berranger, X. Charrier, E. Ceschia, G. Gerosa, A. Finco et al. "Soil ozone deposition: Dependence of soil resistance to soil texture". Atmospheric Environment 199 (febrero de 2019): 202–9. http://dx.doi.org/10.1016/j.atmosenv.2018.11.036.

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Tesis sobre el tema "Soil resistance"

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Ogunye, Festus Olubunmi. "Rain resistance of stabilised soil blocks". Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243039.

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Milstone, Barry Scott. "Effects of nonhomogeneous cementation in soils on resistance to earthquake effects". Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/77896.

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Small amounts of cementation in a sand increase its ability to sustain static and dynamic loads, even in a liquefaction type environment. This has been shown in previous research examining the behavior of both naturally cemented and artificially prepared samples. Cemented sands are present in many parts of the world and can be caused by either a variety of cementing agents or by cold welding at points of grain contact. They are generally quite difficult to sample, but artificially cemented sands have been shown to aptly model the behavior of natural materials, and allow for better test controls. Consequently, artificial samples were used exclusively for the present investigation which has three major objectives: to investigate the effects of a weakly cemented lens within a stronger mass; to determine how cementation affects the volume change characteristics of statically loaded samples; and, to describe the pore pressure generation of sands subjected to cyclic loading. Prior to commencing the test program, a number of index tests were performed on the uncemented and cemented sand used during the laboratory investigation. It was revealed that cementation leads to increased void ratios which distort relative density calculations used to compare cemented and uncemented samples of similar dry unit weight. The practice of identifying samples by dry unit weight was adopted for this report. Static triaxial compression tests were performed on 17 samples. Test results indicate that although the magnitude of volumetric strain at failure does not seem to be dictated by the level of cementation, there is a relationship with cementation and the rate of volume change at failure. A weak lens was seen to lower the static strength of the stronger mass. 26 stress controlled cyclic triaxial tests revealed that a weak lens lowers the liquefaction resistance of the stronger mass. The cyclic strength of the nonhomogeneous material, however, is higher than the independent strength of the weak lens. A weak lens has greater influence at relatively higher levels of cyclic stress. Pore pressure generation in cemented sands are seen to be controlled by strain. At shear strain levels below about 1%, cemented sands behave similarly to uncemented sands with pore pressures increasing more rapidly beyond that amount of strain. Consequently, pore pressure development during cyclic loading is described by a broken-back curve which is defined in the early stages by existing empirical relationships for uncemented sand. Pore pressure prediction may then be achieved using an equation for cemented sand, such as that developed in the present work.
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Standing, James R. "Studies of the interface resistance of soil nails". Thesis, Imperial College London, 1997. http://hdl.handle.net/10044/1/8935.

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Shu, Xin. "The mechanisms underlying the resistance and resilience of soil carbon and nitrogen cycling to environmental stresses". Thesis, University of Aberdeen, 2018. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=237673.

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Cycling of nutrients, such as Carbon (C) and Nitrogen (N), is one of the most important soil functions and is strongly related to the composition of the soil microbial community. However, soil is increasingly under environmental pressures that threaten its ecological functions and sustainability. To maintain soil functional sustainability, it is important to understand how soil withstands environmental stresses (subsequently referred to as resistance) and recovers from stresses (subsequently referred to as resilience). This study focused on the resistance and resilience of C and N processes and the underpinning microbial communities to a persistent Cu stress or a transient heat stress. The main advances and novel findings of this thesis are: (1) C mineralization is more resistant and resilient than ammonia oxidation and denitrification, and thus the combination of C and N processes are more informative than measuring a single process to interpret the overall resistance and resilience; (2) microbial composition and microbial physiological evolution play important roles in affecting resistance and resilience; (3) soil physico-chemical properties (e.g. organic matter, soil water and soil pH) are critically important in conferring resistance and resilience. The outcome of this study advances the understanding of the mechanisms of soil resistance and resilience of C and N cycling to environmental changes. The results generated here are an essential step for improving soil sustainability and promoting agricultural productivity under future environmental challenges.
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Woodward, Rebecca Stanton Wain. "Analysis of tetracycline resistance in compost bacilli". Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259753.

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Cook, H. F. "Assessment of drought resistance in soils". Thesis, University of East Anglia, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374255.

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Bellinger, Christina G. "Commercial Soils as a Potential Vehicle for Antibiotic Resistance Transmission". The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1503298572132004.

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Heap, John. "Increasing Medicago resistance to soil residues of ALS-inhibiting herbicides". Adelaide, Sth. Aust, 2000. http://hdl.handle.net/2440/19842.

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REZENDE, EMILIANA DE SOUZA. "STUDY OF SOIL-GEOSYNTHETIC INTERFACE RESISTANCE USING AN RAMP APPARATUS". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7113@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Em obras ambientais, onde geossintéticos são utilizados como sistema de proteção e de cobertura de taludes, é de extrema importância o conhecimento do mecanismo de interação solo-geossintético, através da obtenção dos parâmetros de resistência da interface (adesão e ângulo de atrito da interface). O ensaio de laboratório mais adequado para a obtenção desses parâmetros, nestas condições, é o de cisalhamento em plano inclinado ou ensaio de rampa, pois permite simular a condição de campo onde o cisalhamento ocorre em um plano inclinado sob baixas tensões. Assim, este trabalho apresenta um estudo sobre a interação sologeossintético através de ensaios de rampa, executados em um equipamento de grandes dimensões, visando analisar a influência de alguns fatores, tais como, tipo de geossintético, tipo de solo, densidade relativa do solo e tensão confinante. Foram utilizados dois tipos de geossintéticos, uma geomembrana de PVC e uma geogrelha uniaxial e dois tipos de solo, areia e pedregulho (brita). A análise da influência da densidade relativa do solo foi realizada através de ensaios na interface areia-geossintético em duas densidades relativas diferentes (35 e 100%). A influência da tensão confinante foi estudada através de ensaios com três tensões confinantes distintas (2,1; 3,2 e 5,1 kPa). Os resultados mostram que a influência de fatores como densidade relativa do solo, tensão confinante e tipo de solo, dependem do tipo do geossintético. O aumento da densidade relativa do solo promove um acréscimo de resistência na interface para a geogrelha e uma redução para a geomembrana. O aumento da tensão confinante reduz o ângulo de rampa na ruptura, sendo este efeito mais pronunciado na interface areia-geogrelha. Em relação ao tipo de material, a interface brita-geogrelha é a que apresenta maior resistência.
In environmental works, where geosynthetics are used as protection system and of slope covering, it is of extreme importance the knowledge of the interaction mechanism soil-geosynthetic, through the obtaining of the parameters of resistance of the interface (adhesion and interface friction angle). The laboratory test more appropriate for the obtaining of those parameters, in these conditions, is it the inclined plane test or ramp test, because it allows to simulate the field condition where the shearing happens in inclined plane under low tensions. Like this, this work presents a study about the interaction soilgeosynthetic through ramp tests, executed in an equipment of great dimensions seeking to analyze the influence of some factors, such as, geosynthetic type, soil type, relative density of the soil and confinement pressure. Two geosynthetics types, a PVC geomembrane and a uniaxial geogrid, two soil types, it sand and gravel (break). The analysis of the influence of the relative density of the soil was accomplished through tests in the interface sand- geosynthetic in two different relative densities (35 and 100%). The influence of the confinement pressure was studied through tests with three different confinement pressures (2,1; 3,2 and 5,1 kPa). The results show that the influence of factors as relative density of the soil, pressure confinement and soil type, they depend on the type of the geosynthetic. The increase of the relative density of the soil promotes an increment in the interface resistance for the geogrid and a reduction for the geomembrana. The increase of the confinement pressure reduces the ramp angle in the rupture, being this more pronounced effect in the interface sand-geogrid. In relation to the material type, the interface gravel-geogrid presents larger resistance.
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Sze, Hon-yue y 施漢裕. "Initial shear and confining stress effects on cyclic behaviour and liquefaction resistance of sands". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45700837.

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Libros sobre el tema "Soil resistance"

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Farrar, Jeffrey A. Study of in situ testing for evaluation of liquefaction resistance. Denver, Colo: Geotechnical Services Branch, Research and Laboratory Services Division, Denver Office, U.S. Dept. of the Interior, Bureau of Reclamation, 1990.

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Nixon, J. F. (Derick). Pipe uplift resistance testing in frozen soil. [Calgary, AB: National Energy Board, 1993.

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Brady, K. C. The effect of vibration on the pull-out resistance of reinforcements in soil. Crowthorne: Ground Engineering Division, Structures Group, Transport and Road Research Laboratory, 1990.

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Breen, Ciaran. The genetic basis of drug resistance in a pentachlorophenol degrading soil micro-organism. Dublin: University College Dublin, 1998.

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Showers, Kate. Early experiences of soil conservation in southern Africa: Segregated programs and rural resistance. Boston: African Studies Center, 1994.

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Wellings, S. R. The use of gypsum resistance blocks for measuring soil water potential in the field. [s.l.]: Institute of Hydrology, 1985.

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Brown, D. A. (Dan A.), National Research Council (U.S.). Transportation Research Board, National Cooperative Highway Research Program, American Association of State Highway and Transportation Officials y United States. Federal Highway Administration, eds. Design guidelines for increasing the lateral resistance of highway-bridge pile foundations by improving weak soils. Washington, D.C: Transportation Research Board, 2011.

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Bastiaanssen, W. G. M. A methodology for the assessment of surface resistance and soil water storage variability at mesoscale based on remote sensing measurements: A case study with HAPEX-EFEDA data. Wallingford: International Association of Hydrological Sciences, 1994.

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Bot, Alexandra. The importance of soil organic matter: Key to drought-resistant soil and sustained food production. Rome: Food and Agriculture Organization of the United Nations, 2005.

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Cook, Hadrian Francis. Assessment of drought resistance in soils. Norwich: University of East Anglia, 1986.

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Capítulos de libros sobre el tema "Soil resistance"

1

Cheung, Raymond y Ken Ho. "Pullout resistance". En Soil Nailing, 189–223. First edition. | Boca Raton : CRC Press, 2021.: CRC Press, 2021. http://dx.doi.org/10.1201/9780367816261-6.

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Hasnain, Ahmad, Wajid Nasim, Hussani Mubarak, Nosheen Mirza, Sohaib Khan, Xiaomei Su, Sarfraz Ahmed y Muhammad Zaffar Hashmi. "Antibiotics Resistance Genes". En Soil Biology, 19–37. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66260-2_2.

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Wang, Fang y James M. Tiedje. "Antibiotic Resistance in Soil". En The Handbook of Environmental Chemistry, 267–93. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/698_2020_562.

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Kathi, Srujana. "Antibiotic Resistance Gene Due to Manure Application". En Soil Biology, 141–50. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66260-2_8.

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Gravelat, Fabrice N., Steven R. Strain y Mark W. Silby. "Fitness Traits in Soil Bacteria". En Frontiers in Antimicrobial Resistance, 425–35. Washington, DC, USA: ASM Press, 2014. http://dx.doi.org/10.1128/9781555817572.ch32.

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Kothe, Erika, Christian Dimkpa, Götz Haferburg, André Schmidt, Astrid Schmidt y Eileen Schütze. "Streptomycete Heavy Metal Resistance: Extracellular and Intracellular Mechanisms". En Soil Biology, 225–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02436-8_10.

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Mandal, Sudhamoy y Ramesh C. Ray. "Induced Systemic Resistance in Biocontrol of Plant Diseases". En Soil Biology, 241–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19769-7_11.

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Kumar, Manoj, Ram Prasad, Shivesh Sharma, Ajit Varma y Vivek Kumar. "Dissemination Mechanism of Antibiotic Resistance Genes in Environment". En Soil Biology, 191–205. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66260-2_10.

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Cytryn, Eddie, Zdzisław Markiewicz y Magdalena Popowska. "Antibiotics and Antibiotics Resistance Genes Dissemination in Soils". En Soil Biology, 151–90. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66260-2_9.

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Hashmi, Muhammad Zaffar, Vladimir Strezov y Ajit Varma. "Erratum to: Antibiotics and Antibiotics Resistance Genes in Soils". En Soil Biology, E1—E12. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-66260-2_22.

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Actas de conferencias sobre el tema "Soil resistance"

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Thevanayagam, S. y N. Ecemis. "Effects of Permeability on Liquefaction Resistance and Cone Resistance". En Geotechnical Earthquake Engineering and Soil Dynamics Congress IV. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40975(318)92.

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Rausche, Frank, Fred Moses y George G. Goble. "Soil Resistance Predictions From Pile Dynamics". En Contributions in Honor of George G. Gobel. Reston, VA: American Society of Civil Engineers, 2004. http://dx.doi.org/10.1061/40743(142)24.

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Liu, Bill, Jack Crooks, J. F. (Derick) Nixon y Joe Zhou. "Experimental Studies of Pipeline Uplift Resistance in Frozen Ground". En 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0133.

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A buried pipeline is subject to a variety of internal and external loads, one of which is the load induced by relative movements between the pipeline and the surrounding soils. Frost heave is one of the potential mechanisms that induce the relative movement for buried pipelines of chilled gas. The magnitude of the loads due to frost heave depends upon the amount of heaving and the load-displacement characteristics of the surrounding frozen soils, i.e., the uplift resistance of the frozen soils. Under the sponsorship of Pipeline Research Council International (PRCI), laboratory uplift tests have been carried out to study the load-displacement characteristics of a frozen soil and to assess the impact of loading rate, ice content and freezing direction. In addition to the measurements of the load and displacement of the pipe, deformations of the soil surface were also monitored at various locations. Parallel to the uplift tests, a series of laboratory geo-mechanical tests were conducted to define stiffness, tensile strain limits and time-dependent behavior of the frozen soil. Examples of the uplift test results are presented in the paper, together with detailed descriptions of soil material and test conditions. It is noted that quantitative data on uplift resistance are considered proprietary and will not be presented in this paper; however, detailed data may be obtained from technical publications of PRCI. Observations during the test with respect to the development of cracks in the frozen soil will be discussed. The load-displacement relationships measured in the uplift tests, together with the geo-mechanical properties of the frozen soil, will be used to the development and calibration of a numerical model, which will be presented in a separate technical paper to IPC2004.
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Zamani, A., K. Feng y B. M. Montoya. "Improved Liquefaction Resistance from Microbial Induced Carbonate Cementation". En Geotechnical Earthquake Engineering and Soil Dynamics V. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481455.029.

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Hayati, Hossein, Ronald D. Andrus, Sarah L. Gassman, Michael Hasek, William M. Camp y Pradeep Talwani. "Characterizing the Liquefaction Resistance of Aged Soils". En Geotechnical Earthquake Engineering and Soil Dynamics Congress IV. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40975(318)61.

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Furriel, Geovanne P., Wesley P. Calixto, Aylton J. Alves, Antonio M. S. Filho, Sostenes G. M. Oliveira, Jose L. Domingos y Elder G. Domingues. "Automatic instrument for measuring soil penetration resistance". En 2015 Chilean Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON). IEEE, 2015. http://dx.doi.org/10.1109/chilecon.2015.7404647.

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Philip T. Christenson, Viacheslav I. Adamchuk y Michael F. Kocher. "Instrumented Blade for Mapping Soil Mechanical Resistance". En 2004, Ottawa, Canada August 1 - 4, 2004. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2004. http://dx.doi.org/10.13031/2013.17645.

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Athanasopoulos, G. A. y V. C. Xenaki. "Liquefaction Resistance of Sands Containing Varying Amounts of Fines". En Geotechnical Earthquake Engineering and Soil Dynamics Congress IV. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40975(318)94.

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Brennodden, Harald y Alfred Stokkeland. "Time-Dependent Pipe-Soil Resistance for Soft Clay". En Offshore Technology Conference. Offshore Technology Conference, 1992. http://dx.doi.org/10.4043/6846-ms.

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Mahmoud, Moataz Abd ElRahman. "Evaluating Soil Resistance to Driving in Carbonate Sand". En Offshore Technology Conference Asia. Offshore Technology Conference, 2016. http://dx.doi.org/10.4043/26656-ms.

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Informes sobre el tema "Soil resistance"

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Aleksova, Michaella. Azoxystrobin Impact on a Selection of Soil Bacterial Resistance to Amynoglicoside Antibiotics. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, octubre de 2019. http://dx.doi.org/10.7546/crabs.2019.10.08.

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Han, Fei, Jeehee Lim, Rodrigo Salgado, Monica Prezzi y Mir Zaheer. Load and Resistance Factor Design of Bridge Foundations Accounting for Pile Group–Soil Interaction. Purdue University, noviembre de 2016. http://dx.doi.org/10.5703/1288284316009.

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Landsberg, Johanna D., Richard E. Miller, Harry W. Anderson y Jeffrey S. Tepp. Bulk density and soil resistance to penetration as affected by commercial thinning in northeastern Washington. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2003. http://dx.doi.org/10.2737/pnw-rp-551.

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Ebeling, Robert y Barry White. Load and resistance factors for earth retaining, reinforced concrete hydraulic structures based on a reliability index (β) derived from the Probability of Unsatisfactory Performance (PUP) : phase 2 study. Engineer Research and Development Center (U.S.), marzo de 2021. http://dx.doi.org/10.21079/11681/39881.

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This technical report documents the second of a two-phase research and development (R&D) study in support of the development of a combined Load and Resistance Factor Design (LRFD) methodology that accommodates geotechnical as well as structural design limit states for design of the U.S. Army Corps of Engineers (USACE) reinforced concrete, hydraulic navigation structures. To this end, this R&D effort extends reliability procedures that have been developed for other non-USACE structural systems to encompass USACE hydraulic structures. Many of these reinforced concrete, hydraulic structures are founded on and/or retain earth or are buttressed by an earthen feature. Consequently, the design of many of these hydraulic structures involves significant soil structure interaction. Development of the required reliability and corresponding LRFD procedures has been lagging in the geotechnical topic area as compared to those for structural limit state considerations and have therefore been the focus of this second-phase R&D effort. Design of an example T-Wall hydraulic structure involves consideration of five geotechnical and structural limit states. New numerical procedures have been developed for precise multiple limit state reliability calculations and for complete LRFD analysis of this example T-Wall reinforced concrete, hydraulic structure.
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Udell, K. S. Thermal treatment of low permeability soils using electrical resistance heating. Office of Scientific and Technical Information (OSTI), agosto de 1996. http://dx.doi.org/10.2172/447174.

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Ramirez, A. L. y W. D. Daily. Monitoring radio-frequency heating of contaminated soils using electrical resistance tomography. Office of Scientific and Technical Information (OSTI), septiembre de 1993. http://dx.doi.org/10.2172/10130434.

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Rahman, Shahedur, Rodrigo Salgado, Monica Prezzi y Peter J. Becker. Improvement of Stiffness and Strength of Backfill Soils Through Optimization of Compaction Procedures and Specifications. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317134.

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Vibration compaction is the most effective way of compacting coarse-grained materials. The effects of vibration frequency and amplitude on the compaction density of different backfill materials commonly used by INDOT (No. 4 natural sand, No. 24 stone sand, and No. 5, No. 8, No. 43 aggregates) were studied in this research. The test materials were characterized based on the particle sizes and morphology parameters using digital image analysis technique. Small-scale laboratory compaction tests were carried out with variable frequency and amplitude of vibrations using vibratory hammer and vibratory table. The results show an increase in density with the increase in amplitude and frequency of vibration. However, the increase in density with the increase in amplitude of vibration is more pronounced for the coarse aggregates than for the sands. A comparison of the maximum dry densities of different test materials shows that the dry densities obtained after compaction using the vibratory hammer are greater than those obtained after compaction using the vibratory table when both tools were used at the highest amplitude and frequency of vibration available. Large-scale vibratory roller compaction tests were performed in the field for No. 30 backfill soil to observe the effect of vibration frequency and number of passes on the compaction density. Accelerometer sensors were attached to the roller drum (Caterpillar, model CS56B) to measure the frequency of vibration for the two different vibration settings available to the roller. For this roller and soil tested, the results show that the higher vibration setting is more effective. Direct shear tests and direct interface shear tests were performed to study the impact of particle characteristics of the coarse-grained backfill materials on interface shear resistance. The more angular the particles, the greater the shear resistance measured in the direct shear tests. A unique relationship was found between the normalized surface roughness and the ratio of critical-state interface friction angle between sand-gravel mixture with steel to the internal critical-state friction angle of the sand-gravel mixture.
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Ramirez, A. L. y W. D. Daily. Monitoring six-phase ohmic heating of contaminated soils using electrical resistance tomography. Office of Scientific and Technical Information (OSTI), septiembre de 1994. http://dx.doi.org/10.2172/221041.

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Yordanov, Stancho I., Luben I. Lakov, Irina D. Stambolova, Vladimir N. Blaskov, Sasho V. Vassilev, Vanya L. Dyakova y Alexander E. Elyas. Surface Morphology and Corrosion Resistance of Neodimium Doped TiO2 Sol-gel Coatings. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, mayo de 2018. http://dx.doi.org/10.7546/crabs.2018.05.05.

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Yordanov, Stancho I., Irina D. Stambolova, Luben I. Lakov, Sasho V. Vassilev y Bojidar T. Jivov. Sol-gel CeO2 and ZrO2 Coatings on CeO2: Study of the Phase Composition, Morphology and Corrosion Resistance. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, febrero de 2019. http://dx.doi.org/10.7546/crabs.2019.01.07.

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