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Letteratura scientifica selezionata sul tema "Swale"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 21 febbraio 2023

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Articoli di riviste sul tema "Swale"

1

Bäckström, M. "Sediment transport in grassed swales during simulated runoff events". Water Science and Technology 45, n. 7 (1 aprile 2002): 41–49. http://dx.doi.org/10.2166/wst.2002.0115.

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Particle trapping in nine different grassed swales was measured successfully with a standardised runoff event simulation procedure. The percentage of total suspended solids removed ranged from 79 to 98%. It was found that sedimentation processes, rather than grass filtration governed the overall particle trapping efficiency. The highest particle trapping efficiency was observed in the field swales with dense, fully developed turf. A high infiltration rate was beneficial for the particle trapping and an increased swale length made it possible for smaller particles to be captured. A densely vegetated, ten metre long swale, receiving a stormwater flow of 1.0 litres per second, may capture a majority of the waterborne particles with settling velocities larger than 0.1 metres per hour. A simple model of particle trapping efficiency in grassed swales was developed and tested. It was found that mean swale residence time could be used as a design parameter for particle removal in grassed swales. The suggested exponential relationship between mean swale residence time and particle settling velocity associated with a certain trapping efficiency is so far only valid for a limited range of swale designs and residence times.

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2

Bäckström, M. "Grassed swales for stormwater pollution control during rain and snowmelt". Water Science and Technology 48, n. 9 (1 novembre 2003): 123–32. http://dx.doi.org/10.2166/wst.2003.0508.

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The retention of suspended solids, particles and heavy metals in different grassed swales during rain events and snowmelt is discussed. The experimental results derived from investigations performed in existing grassed swales in the Luleå region, Northern Sweden. During high pollutant loading rates, grassed swales retain significant amounts of pollutants, mainly due to sedimentation of particulate matter. Low to moderate removal efficiencies could be expected for heavy metals, especially metals in solution (i.e. the dissolved phase). When grassed swales receive urban runoff with low pollutant concentrations, they may release rather than retain pollutants. Swales are important snow deposit areas in the city and particle bound pollutants do to a large extent remain in the swale after snowmelt. However, dissolved pollutants (i.e. dissolved heavy metals) are likely to escape the swale with the melt water. Grassed swales may be regarded as facilities that even out the peaks in pollutant loads without being capable of producing consistent high removal rates. This suggests that swales should be considered as primary treatment devices. Possible design parameters for grassed swales are mean hydraulic detention time, surface loading rate or specific swale area.

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3

Hutchcraft, Allison. "Swale". Missouri Review 42, n. 2 (2019): 29–31. http://dx.doi.org/10.1353/mis.2019.0031.

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4

Andrés-Valeri, Valerio C., Luis A. Sañudo-Fontaneda, Carlos Rey-Mahía, Stephen J. Coupe e Felipe P. Alvarez-Rabanal. "Thermal Performance of Wet Swales Designed as Multifunctional Green Infrastructure Systems for Water Management and Energy Saving". Proceedings 2, n. 23 (5 novembre 2018): 1433. http://dx.doi.org/10.3390/proceedings2231433.

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Lack of city space and conventional drainage systems failures have derived in the need to implement Green Stormwater Infrastructure (GSI) techniques which provide multifunctional areas capable of managing stormwater, treating the pollutants present in the runoff, bringing back biodiversity to the urban environment, and providing amenity whilst improving livability. In this context, swales were studied as a potential multifunctional GSI for water management and energy saving. This research successfully proposed the combination of a wet swale with a Ground Source Heat Pump (GSHP) system. The materials used within the cross section of a standard wet swale provided good isolation properties within the temperature performance ranges (20–50 °C), showing great potential for a swale to be developed together with GSHP elements, opening a new research area for water management and energy saving.

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5

Rech, Aline, Elisa Pacheco, Jakcemara Caprario, Julio Cesar Rech e Alexandra Rodrigues Finotti. "Low-Impact Development (LID) in Coastal Watersheds: Infiltration Swale Pollutant Transfer in Transitional Tropical/Subtropical Climates". Water 14, n. 2 (14 gennaio 2022): 238. http://dx.doi.org/10.3390/w14020238.

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The control of runoff pollution is one of the advantages of low-impact development (LID) or sustainable drainage systems (SUDs), such as infiltration swales. Coastal areas may have characteristics that make the implementation of drainage systems difficult, such as sandy soils, shallow aquifers and flat terrains. The presence of contaminants was investigated through sampling and analysis of runoff, soil, and groundwater from a coastal region served by an infiltration swale located in southern Brazil. The swale proved to be very efficient in controlling the site’s urban drainage volumes even under intense tropical rainfall. Contaminants of Cd, Cu, Pb, Zn, Cr, Fe, Mn and Ni were identified at concentrations above the Brazilian regulatory limit (BRL) in both runoff and groundwater. Soil concentrations were low and within the regulatory limits, except for Cd. The soil was predominantly sandy, with neutral pH and low ionic exchange capacity, characteristic of coastal regions and not very suitable for contaminant retention. Thus, this kind of structure requires improvements for its use in similar environments, such as the use of adsorbents in soil swale to increase its retention capacity.

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6

Fach, Stefan, Carolina Engelhard, Nina Wittke e Wolfgang Rauch. "Performance of infiltration swales with regard to operation in winter times in an Alpine region". Water Science and Technology 63, n. 11 (1 giugno 2011): 2658–65. http://dx.doi.org/10.2166/wst.2011.153.

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In cold climate regions winter conditions significantly influence the performance of stormwater infiltration devices. Frozen soil and water storage by snow changes their operation. In this paper winter operation of a grassed infiltration swale was investigated using on-site and laboratory measurements. The field investigation of a grassed swale at a parking place in an Alpine region showed that the swale fulfilled its function properly. Although the top layer was frozen for some time, the storage capacity of the swale was sufficient to store the precipitation until the conditions improved. The soil attenuated the air temperature, at 20 cm below ground surface the soil was only frozen for one week. Winter maintenance proved to be a problem, together with the snow from the parking place a lot of gravel and fine particles were deposited at one end of the swale. This decreased the hydraulic conductivity at that point significantly. The laboratory tests with soil columns showed an increase of flow time through the soil column with decreasing soil moisture content. For soil temperatures below 0 °C the hydraulic conductivity was reduced for increasing initial soil moisture contents. All in all the hydraulic conductivity was best around 0 °C for all soil water contents. However, also at minus 5 °C the coefficient of hydraulic conductivity was always at least above 10−6 m/s, thus within the range of tolerated hydraulic conductivity specified in the national guidelines. Nevertheless, the handling of the soil was found to have high influence on the results. The results indicate that in the Alpine region infiltration swales operate sufficiently under winter conditions although with decreased performance.

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Liu, An, Prasanna Egodawatta e Ashantha Goonetilleke. "Ranking Three Water Sensitive Urban Design (WSUD) Practices Based on Hydraulic and Water Quality Treatment Performance: Implications for Effective Stormwater Treatment Design". Water 14, n. 8 (15 aprile 2022): 1296. http://dx.doi.org/10.3390/w14081296.

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Bioretention basins, constructed wetlands and roadside swales are among the most common Water-Sensitive Urban Design (WSUD) or stormwater quality treatment systems. Although these systems can reduce stormwater quantity and improve quality, their hydraulic and water quality treatment performances are different. The aim of this study was to investigate the hydraulic and water quality performance of a bioretention basin, a constructed wetland and a roadside swale by analyzing monitored water quantity and quality data from a range of rainfall events using a ranking approach. The study outcomes showed that a bioretention basin performed better in relation to peak flow and runoff volume reduction while the constructed wetland tended to produce better outflow water quality. The roadside swale had a relatively lower capacity for treating stormwater. These results suggest that a bioretention basin could be the preferred option when the primary requirement is water quantity improvement. However, if water quality improvement is the primary consideration, a constructed wetland could be more efficient. Additionally, when designing a treatment train, it appears to be preferable to place a bioretention basin prior to a constructed wetland. Further, a swale appears to be more appropriate for use as a pretreatment device. The research study outcomes will contribute to effective stormwater treatment design.

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8

Fardel, Alexandre, Pierre-Emmanuel Peyneau, Béatrice Béchet, Abdelkader Lakel e Fabrice Rodriguez. "Analysis of swale factors implicated in pollutant removal efficiency using a swale database". Environmental Science and Pollution Research 26, n. 2 (7 novembre 2018): 1287–302. http://dx.doi.org/10.1007/s11356-018-3522-9.

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9

Li, James, Robert Orland e Tom Hogenbirk. "Environmental road and lot drainage designs: alternatives to the curb-gutter-sewer system". Canadian Journal of Civil Engineering 25, n. 1 (1 gennaio 1998): 26–39. http://dx.doi.org/10.1139/l97-044.

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Traditionally, road and lot drainage systems have been designed to convey storm runoff away as quickly as possible to reduce localized ponding. This drainage concept, using curb-gutter-sewer systems, has led to downstream flooding, erosion, water-quality degradation, reduced groundwater recharge and stream baseflow, and aquatic habitat destruction. This paper examines the pros and cons of curb-gutter-sewer systems and qualitatively compares various forms of open ditch - swale drainage alternatives with the conventional curb-gutter-sewer drainage system. These open ditch - swale drainage alternatives not only provide drainage functions but also promote infiltration, trap sediments, and reduce flow velocity along the drainage path. Thus, they can reduce erosion, enhance runoff quality, and increase groundwater recharge. However, they usually require a wider right-of-way than the conventional curb-gutter-sewer systems and may not be suitable for sites with steep topography or erosive soils. For sites that are suitable for the application of these alternative drainage systems, their environment functions make them more attractive than the conventional curb-gutter-sewer system.Key words: drainage systems, storm water, curbs, gutters, sewers, ditches, swales.

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Swale, Simon. "Fashion Design Process - Simon Swale". Scope: Contemporary Research Topics (Art and Design), n. 21 (2021): 46–47. http://dx.doi.org/10.34074/scop.1021007.

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Tesi sul tema "Swale"

1

Poarch, Patricia J. "Big Impact. Small Scale. Rethinking Water Aid for Hurricane Relief". University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1368013310.

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2

Christmas, Martin. "Phosphorus dynamics in the Swale-Ouse river system". Thesis, Durham University, 1998. http://etheses.dur.ac.uk/4670/.

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A study was made of the phosphorus ecology of the Swale - Ouse river in northern England. It ranges from a stream draining a peat moorland to a mature river influenced by urbanisation (estimated population 250 000) and intensive agriculture. The aims were to assess the concentration and variability of aqueous N and P on spatial and temporal scales, and the response of two common mosses, Fontinalis antipyretica and Rhynchostegium riparioides, to those changes. Key aspects included analysis of water chemistry, internal nutrient contents of mosses, and 'surface' phosphatase activity. The rate of activity of m situ plants was measured over an annual period, in conjunction with short-term studies of transplanted populations. Studies of phosphatase activity in the water also were carried out to assess the biological cycling of phosphorus. Aqueous total phosphorus and total dissolved nitrogen concentration increased on passing down the river. In the upper reaches, total phosphorus comprised equal contributions of dissolved organic and inorganic phosphorus, which were almost certainly derived from diffuse sources. Further downstream, total phosphorus was almost entirely comprised of inorganic phosphorus from point source inputs. The nitrogen and phosphorus content of Fontinalis antipyretica and Rhynchostegium riparioides increased on passing downstream, consistent with the water chemistry. The rate of phosphomonoesterase activity of both mosses was high in the upper reaches of the river, and was inversely related to nutrient content. Fontinalis antipyretica sampled from streams draining peat moorland was shown to have a high phosphodiesterase : phosphomonoesterase ratio. A possible explanation for this is that peat is a potentially rich source of phosphodiester substrate, although increased phosphodiesterase activity may be a response to extreme phosphorus limitation. Transplantation of F. antipyretica showed that internal nutrient content and phosphatase activity respond to changes in ambient nutrients. Aqueous phosphomonoesterase activity was studied over a 12-month period. Laboratory and field studies suggest it plays an important role in the. phosphorus dynamics of the Swale - Ouse river system.

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Ainsworth, Andrew Mark. "Microbial organic nitrogen transformations in the River Swale-Ouse system". Thesis, University of Hull, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301371.

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4

Wilson, Laura R. "Evaluation of a Constructed Dry Swale for Treatment of Stormwater Runoff". Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/WilsonLR2004.pdf.

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5

Stockley, Rosalind Antonia. "Detritus processing in the River Swale-Ouse : the role of macroinvertebrates". Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298585.

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6

Grove, James Robin. "Downstream change in the processes of riverbank erosion along the River Swale, UK". Thesis, University of Birmingham, 2001. http://etheses.bham.ac.uk//id/eprint/4429/.

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This study was designed to test the hypothesis that riverbank erosion processes altered with increasing distance from a river source. The River Swale, northern England, was monitored at nine sites throughout its 109-km length, from December 1995 – March 1998. Erosion pins, bank-edge surveying, and Photo-Electronic Erosion Pins (PEEPs) were used to determine rates and timings of erosion. The rates were compared against a range of environmental variables based on temperature, river stage, and precipitation at 14-day intervals for erosion pins and 15-minute intervals for PEEPs. This allowed processes of erosion to be inferred. Catchment erosion rates were modelled using quadratic equations, simulating a mid-basin peak of 3.58 m a\(^{-1}\). Rates of erosion were low upstream, 0.07 m a\(^{-1}\), and also downstream, 0.12 m a\(^{-1}\). Subaerial processes, especially frost action, dominated upstream. Fluvial entrainment was most influential mid-catchment. Mass failures were most efficient downstream, but were more frequent mid-catchment. Piping, sapping and cantilever failures did not follow the same trends and were modelled separately. The length of the erosion season increased downstream as the number of active processes increased.

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7

Jones, Heather A. "A Vegetational Analysis of Interdunal Swale Communities of False Cape State Park, Currituck Spit, Virginia". W&M ScholarWorks, 1992. https://scholarworks.wm.edu/etd/1539625723.

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Druery, Karen Diane. "Geochemical and geomorphological controls on metal accumulation in soils and plants of the River Swale, U.K". Thesis, Birkbeck (University of London), 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440448.

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9

Rowley, Maxine Joy, of Western Sydney Hawkesbury University e Faculty of Science and Technology. "Spatial distribution of phosphorus in the sediments of a constructed wetland receiving treated sewage effluent". THESIS_FST_XXX_Rowley_M.xml, 1998. http://handle.uws.edu.au:8081/1959.7/403.

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The Byron Bay Sewage Treatment work consists of a conventional treatment system discharging into an 8 ha wetland. The wetland was constructed around the dune and swale remnants of a coastal beach ridge formation. The wetland design incorporated stands of broad leaf paperback, Melaleuca quinquenervia , in two distinct Sections, separated by, and each preceded by, open water Sections fringed by predominantly emergent macrophytes. Spatial and temporal patterns in sediment phosphorus concentrations were examined using sediment cores. Core consisted of three main sediment types - surface organic accumulation, pre-existing organic layers and sand. Results suggest that the design and management of wetland systems should be aimed at maximising the deposition of sediment (and associated phosphorus) and minimising subsequent phosphorus release from the sediment. This might be achieved through the removal of accumulated organic sediments to retain the phosphorus adsorption capacity of the system, consideration of wind direction during periods of high (floating) plant growth (as detritus may accumulate along the up-wind edges of the wetland), incorporation of deep zones to minimise sediment phosphorus release and the inclusion of stands of M. quinquenervia. Results highlight pitfalls in the prevailing approach to wetland design, which ignore the complex functions which occur in natural wetland systems. A more holistic approach incorporating a high diversity of ecozones in wetland design is proposed, in effect mimicking natural systems.
Master of Science (Hons)

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Oyelola, O. O. "The use of compost and recycled aggregates in the treatment of runoff pollutants in vegetated sustainable drainage devices such as swale". Thesis, Coventry University, 2013. http://curve.coventry.ac.uk/open/items/082ceb3a-f311-4f8e-829f-5120b168724a/1.

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Urbanisation, a process associated with industrialisation and development has been characterised by unsustainable impacts such as increased impervious surfaces, increased air pollution, increased use of natural resources, increased volume of surface run-off, decreased quality of surface run-off, and depletion of biodiversity and habitats. The effects of these impacts on the environment include climate change, flooding, erosion, pollution of water bodies, and destruction of aquatic life and biodiversity. Studies have shown that sustainable designs such as Sustainable Drainage Systems (SuDS) would help mitigate some of these effects sustainably. SuDS are natural drainage systems that simulate the natural drainage of a site/catchment and work in harmony to achieve increase in ground infiltration and treatment of runoff; and reduction in flow rates and volume of surface runoff, thereby improving storm water quality, reducing erosion, recharging groundwater, improving biodiversity and ultimately improving sustainability. However, sustainability of SuDS devices are questionable because their component parts involve the use of natural resources i.e. topsoil and gravel. The overall aim of this research was to evaluate the efficacy of the application of recycled/waste materials in performing at least as well as topsoil and gravel in vegetative SuDS, thereby improving water quality and overall sustainability. The materials applied were compost and recycled aggregates. In assessing their efficacy in vegetative SuDS, the risk these materials could pose to water quality was not overlooked but was considered in establishing an ideal model for the treatment of pollutants in vegetative SuDS. Results of this research showed that overall compost and recycled aggregates were able to perform at least as well as gravel and topsoil in vegetative SuDS in terms of characterisation, biofilm and vegetative development, and remediation of runoff pollutants thereby improving the sustainability of vegetative SuDS. Compared to gravel and topsoil, characterisation of compost and recycled aggregates was shown to be less expensive, less time consuming (except for recycled aggregates) and more sustainable, in terms of conserving natural resources. It was deduced that compost would be able to biodegrade organic pollutants in vegetative SuDS in varying conditions, compared to topsoil, thereby improving water quality. Vegetative growth in profiles containing compost were more prolific than those with topsoil alone, indicating that vegetative SuDS containing compost would attenuate stormwater and remediate pollutants by phytoremediation, better than topsoil. Results showed that compost and recycled aggregates performed as well as gravel and topsoil in remediating pollutants, with >98% of pollutants being retained mostly within the growth media, confirming that most pollutants are treated within the growth media of vegetative SuDS devices. This research was able to establish that SuDS components can be as unsustainable as components of conventional drainage systems in terms of their social, economic and environmental impacts; and that recycled materials could perform just as well as conventional materials, whilst improving their sustainability. This research further established that compost and recycled aggregates can be used in vegetative SuDS, such as swales, as literature has shown that the use of compost and recycled aggregates in vegetative SuDS has been limited to compost blankets and socks and substrates for green roofs. Suggestions for other waste materials that can be used instead topsoil and gravel in vegetative SuDS were also made. Results from this research were applied in the development of a swale model for the treatment of pollutants in vegetative SuDS.

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Più fonti

Libri sul tema "Swale"

1

Ash, Pauline. Student nurse at Swale. Leicester: Linford, 1990.

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2

Curtis, Alan B. Camas Swale Research Natural Area. [Portland, Or: Pacific Northwest Research Station], 1987.

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3

Welland, L. G. Sheppey - the Swale - Faversham - some connections. Faversham: Faversham Society, 1990.

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4

Medway and Swale Estuary Partnership. Strategy for the Medway & Swale Estuary. Chatham: The Partnership, 1997.

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5

Schuller, Reid. Camas Swale Research Natural Area: Guidebook supplement 42. Portland, Or: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2011.

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6

The Swale: A history of the Holy River of St Paulinus. 2^a ed. York, England: William Sessions, 1995.

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7

Bridgland, D. R. Late Quaternary landscape evolution of the Swale-Ure washlands, North Yorkshire. Oxford, UK: Oxbow Books, 2010.

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Agency, Environment. The Swale, Ure, Nidd and upper Ouse catchment abstraction management strategy. Leeds: Environment Agency, 2004.

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Late Quaternary landscape evolution of the Swale-Ure washlands, North Yorkshire. Oxford, UK: Oxbow Books, 2010.

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10

Bradley, Tom. The Swale: With bird's-eye view of the river and roads adjoining. Leeds: Old Hall Press, 1988.

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Capitoli di libri sul tema "Swale"

1

Crinall, Sarah. "Lawson Street Swale Painting, Home". In Children: Global Posthumanist Perspectives and Materialist Theories, 199–229. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3007-0_6.

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Williams, John R. "Martin Swales/Erika Swales: Reading Goethe". In Goethe-Jahrbuch, 394–95. Stuttgart: J.B. Metzler, 2004. http://dx.doi.org/10.1007/978-3-476-02860-0_51.

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3

Smith, B. P. G., P. S. Naden, G. J. L. Leeks e P. D. Wass. "Characterising the fine sediment budget of a reach of the River Swale, Yorkshire, U.K. during the 1994 to 1995 winter season". In The Interactions between Sediments and Water, 135–43. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-3366-3_19.

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4

Lowes, J. M. "A Swage Pile Connection Technique". In Advances in Underwater Technology, Ocean Science and Offshore Engineering, 175–79. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4203-5_20.

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Lus, Huseyin Murat. "Swage Casting of A356 (AlSi7Mg0.3) Alloy". In Shape Casting: 5th International Symposium 2014, 43–49. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118888100.ch6.

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Lus, Huseyin Murat. "Swage Casting of A356 (AlSi7Mg0.3) Alloy". In Shape Casting: 5th International Symposium 2014, 43–49. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-48130-2_6.

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7

Su, Ming-Yang, e John Cartmill. "Breaking Wave Statistics Obtained During ‘Swade’". In Breaking Waves, 161–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84847-6_14.

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Nilsson, Kerstin. "A Sustainable Working Life for All Ages – The swAge-Model". In Advances in Intelligent Systems and Computing, 223–30. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96065-4_25.

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9

Lowes, J. M. "The Funding of the Hydra-Lok Swage Pile Connection Development". In Advances in Underwater Technology, Ocean Science and Offshore Engineering, 13–16. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1299-1_2.

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Fischer, Joachim. "Commentary on Doron Swade, “Collecting Software: Preserving Information in an Object-Centred Culture”". In History of Computing: Software Issues, 237–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04954-9_20.

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Atti di convegni sul tema "Swale"

1

Borst, M., S. D. Struck, S. Muthukrishnan, A. Selvakumar e T. O'Connor. "Swale Performance for Stormwater Runoff". In Second National Low Impact Development Conference. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/41007(331)16.

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2

Ahmed, Farzana, John S. Gulliver e John L. Nieber. "Estimating Swale Performance in Volume Reduction". In World Environmental and Water Resources Congress 2015. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479162.024.

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3

Ahmed, Farzana, John S. Gulliver e John L. Nieber. "Determining Infiltration Loss of a Grassed Swale". In World Environmental and Water Resources Congress 2014. Reston, VA: American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413548.002.

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4

Struck, S. D., M. Borst, S. Muthukrishnan, A. Selvakumar e T. O'Connor. "Approaches for Determining Swale Performance for Stormwater Runoff". In World Environmental and Water Resources Congress 2007. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40927(243)41.

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5

GOH, Sin Zhi, Say Leong ONG, Jiangyong HU, Cui Xian LIOU e Geok Suat ONG. "Environmental Influences on Pollutants Removal in Modular Bioretention Swale". In Annual International Conference on Sustainable Energy and Environmental Sciences. Global Science & technology Forum ( GSTF ), 2016. http://dx.doi.org/10.5176/2251-189x_sees16.42.

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6

Jingyi Zhang, Runbin Duan, Sha Chen, Danna Shen e Xubin Pan. "Metals Removal Comparison of Grass Strip and Grass Swale". In 2012 Dallas, Texas, July 29 - August 1, 2012. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2012. http://dx.doi.org/10.13031/2013.41908.

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7

Luell, S. K., W. F. Hunt e R. J. Winston. "Treating Highway Bridge Deck Runoff Using Bioretention and a Swale". In World Environmental and Water Resources Congress 2011. Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41173(414)40.

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8

Kuo, Jan-Tai, Shaw L. Yu, Elizabeth A. Fassman e Henry Pan. "Field Test of Grassed Swale Performance in Removing Runoff Pollution". In 29th Annual Water Resources Planning and Management Conference. Reston, VA: American Society of Civil Engineers, 1999. http://dx.doi.org/10.1061/40430(1999)167.

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9

Stacy K Luell, William F Hunt e Ryan J Winston. "Improving Water Quality and Hydrology Associated with Highway Bridge Deck Runoff Using Bioretention and a Swale". In 2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2010. http://dx.doi.org/10.13031/2013.29784.

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10

Gosselin, Greg, Jacob Alexander Gochenour, Benjamin S. Suranovic e R. Shane Mcgary. "CHARACTERIZING VOID SPACES AND HYDROLOGICAL FEATURES ASSOCIATED WITH A KARSTIC SWALE AT GRAND CAVERNS, VA USING RESISTIVITY". In 66th Annual GSA Southeastern Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017se-291542.

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Rapporti di organizzazioni sul tema "Swale"

1

Downard, Alicia, Stephen Semmens e Bryant Robbins. Automated characterization of ridge-swale patterns along the Mississippi River. Engineer Research and Development Center (U.S.), aprile 2021. http://dx.doi.org/10.21079/11681/40439.

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Abstract (sommario):

The orientation of constructed levee embankments relative to alluvial swales is a useful measure for identifying regions susceptible to backward erosion piping (BEP). This research was conducted to create an automated, efficient process to classify patterns and orientations of swales within the Lower Mississippi Valley (LMV) to support levee risk assessments. Two machine learning algorithms are used to train the classification models: a convolutional neural network and a U-net. The resulting workflow can identify linear topographic features but is unable to reliably differentiate swales from other features, such as the levee structure and riverbanks. Further tuning of training data or manual identification of regions of interest could yield significantly better results. The workflow also provides an orientation to each linear feature to support subsequent analyses of position relative to levee alignments. While the individual models fall short of immediate applicability, the procedure provides a feasible, automated scheme to assist in swale classification and characterization within mature alluvial valley systems similar to LMV.

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2

Schuller, Reid. Camas Swale Research Natural Area: guidebook supplement 42. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2011. http://dx.doi.org/10.2737/pnw-gtr-843.

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3

Looper, Erin. Scenes from the Swale: Investigating Spatial and Temporal Dimensions of Nitrogen Cycling in Urban Stormwater Bioretention Facilities. Portland State University Library, gennaio 2000. http://dx.doi.org/10.15760/etd.7372.

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4

Chen, Peter C. A Simple Analysis of the Swage Autofrettage Process. Fort Belvoir, VA: Defense Technical Information Center, luglio 1988. http://dx.doi.org/10.21236/ada197666.

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5

Jensen, R. E. The Surface Wave Dynamics Experiment (SWADE) - A Retrospective Look at the Wave Modeling Activities. Fort Belvoir, VA: Defense Technical Information Center, settembre 1994. http://dx.doi.org/10.21236/ada285612.

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6

Lee, S. L., J. Neese e E. Hyland. Residual Stress in Swage Autofrettaged Cylinders with Axial Semi-Circular Mid-Wall Cooling Channels. Fort Belvoir, VA: Defense Technical Information Center, settembre 1997. http://dx.doi.org/10.21236/ada329516.

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7

Lee, S. L., E. Hyland, J. Neese e D. Windover. Residual Stress in a Swage Autofrettaged Steel Cylinder with Semi-Circular Mid-Wall Channels. Fort Belvoir, VA: Defense Technical Information Center, maggio 1998. http://dx.doi.org/10.21236/ada346749.

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8

Boyle, M., e Elizabeth Rico. Terrestrial vegetation monitoring at Cumberland Island National Seashore: 2020 data summary. National Park Service, settembre 2022. http://dx.doi.org/10.36967/2294287.

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Abstract (sommario):

The Southeast Coast Network (SECN) conducts long-term terrestrial vegetation monitoring as part of the nationwide Inventory and Monitoring Program of the National Park Service (NPS). The vegetation community vital sign is one of the primary-tier resources identified by SECN park managers, and it is currently conducted at 15 network parks (DeVivo et al. 2008). Monitoring plants and their associated communities over time allows for targeted understanding of ecosystems within the SECN geography, which provides managers information about the degree of change within their parks’ natural vegetation. 2020 marks the first year of conducting this monitoring effort at Cumberland Island National Seashore (CUIS). Fifty-six vegetation plots were established throughout the park from May through July. Data collected in each plot included species richness across multiple spatial scales, species-specific cover and constancy, species-specific woody stem seedling/sapling counts and adult tree (greater than 10 centimeters [3.9 inches {in}]) diameter at breast height (DBH), overall tree health, landform, soil, observed disturbance, and woody biomass (i.e., fuel load) estimates. This report summarizes the baseline (year 1) terrestrial vegetation data collected at Cumberland Island National Seashore in 2020. Data were stratified across three dominant broadly defined habitats within the park, including Coastal Plain Upland Open Woodlands, Maritime Open Upland Grasslands, and Maritime Upland Forests and Shrublands. Noteworthy findings include: 213 vascular plant taxa (species or lower) were observed across 56 vegetation plots, including 12 species not previously documented within the park. The most frequently encountered species in each broadly defined habitat included: Coastal Plain Upland Open Woodlands: longleaf + pond pine (Pinus palustris; P. serotina), redbay (Persea borbonia), saw palmetto (Serenoa repens), wax-myrtle (Morella cerifera), deerberry (Vaccinium stamineum), variable panicgrass (Dichanthelium commutatum), and hemlock rosette grass (Dichanthelium portoricense). Maritime Open Upland Grasslands: wax-myrtle, saw greenbrier (Smilax auriculata), sea oats (Uniola paniculata), and other forbs and graminoids. Maritime Upland Forests and Shrublands: live oak (Quercus virginiana), redbay, saw palmetto, muscadine (Muscadinia rotundifolia), and Spanish moss (Tillandsia usneoides) Two non-native species, Chinaberry (Melia azedarach) and bahiagrass (Paspalum notatum), categorized as invasive by the Georgia Exotic Pest Plant Council (GA-EPPC 2018) were encountered in four different Maritime Upland Forest and Shrubland plots during this monitoring effort. Six vascular plant species listed as rare and tracked by the Georgia Department of Natural Resources (GADNR 2022) were observed in these monitoring plots, including the state listed “Rare” Florida swampprivet (Forestiera segregata var. segregata) and sandywoods sedge (Carex dasycarpa) and the “Unusual” green fly orchid (Epidendrum conopseum). Longleaf and pond pine were the most dominant species within the tree stratum of Coastal Plain Upland Open Woodland habitat types; live oak was the most dominant species of Maritime Upland Forest and Shrubland types. Saw palmetto and rusty staggerbush (Lyonia ferruginea) dominated the sapling stratum within Maritime Upland Forest and Shrubland habitat types. Of the 20 tree-sized redbay trees measured during this monitoring effort only three were living and these were observed with severely declining vigor, indicating the prevalence and recent historical impact of laurel wilt disease (LWD) across the island’s maritime forest ecosystems. There was an unexpectedly low abundance of sweet grass (Muhlenbergia sericea) and saltmeadow cordgrass (Spartina patens) within interdune swale plots of Maritime Open Upland habitats on the island, which could be a result of grazing activity by feral horses. Live oak is the dominant tree-sized species across...

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