Bibliographies thématiques / Reclamation channel

Littérature scientifique sur le sujet « Reclamation channel »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "Reclamation channel"

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Chen, Lei, Zeng Zhou, Fan Xu, Mirian Jimenez, Jianfeng Tao et Changkuan Zhang. « Simulating the impacts of land reclamation and de-reclamation on the morphodynamics of tidal networks ». Anthropocene Coasts 3, no 1 (1 janvier 2020) : 30–42. http://dx.doi.org/10.1139/anc-2019-0010.

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The morphodynamic responses of tidal networks to anthropogenic reclamation and de-reclamation projects are investigated through a three-stage numerical simulation. In the first stage, the natural development of tidal networks is modelled in an open coast without any anthropogenic interventions. At the beginning of the second stage, parts of the computational domain are enclosed by sea dikes, which represents the implementation of the reclamation project. These sea dikes are removed or opened in the third stage to simulate the recovery of the tidal networks after de-reclamation. Each stage was set to last 100 years. The model results indicate that land reclamation can lead to three effects on tidal network morphology: (i) completely terminating the development of channels inside the projected area, (ii) hindering the development of the channel network in front of the dikes, and (iii) turning the channel direction near the corners of the dikes. When removing all the sea dikes, the previously reclaimed areas are quickly occupied by tidal networks. However, the morphology cannot be fully restored to its original natural state, although the entire reclaimed areas are returned. The effects of opening breaches are relatively slow, and tree-like network structures are formed inside the reclaimed areas.
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Zhao, Xin, et Qun Sun. « Influence of Reclamation on Hydrodynamic Environment in Bohai Bay ». Advanced Materials Research 726-731 (août 2013) : 3262–65. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.3262.

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The SWAN model was used to simulate the effect of the coastline change caused by the reclamations on the wave fields in Bohai Bay. The numerical results in the year of 2000 had been compared with that of 2010 to study the influence of the sea reclamations on the wind waves in Caofeidian area. The results show that the significant wave height has a declining trend due to the reclamation and decreased in value of 0.1 to 0.4m in 2010. The magnitude of the decrease of the significant wave height in winter is larger than that in summer. The significant variations of wave fields are occurred in the harbor basin and tide channel.
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Zhao, Xiaodong, Jinrong Ma et Xiangming Wang. « PHYSICAL MODEL EXPERIMENTS ON RECLAMATION PROJECT OF FANGCHENG PORT ». Coastal Engineering Proceedings 1, no 32 (6 février 2011) : 80. http://dx.doi.org/10.9753/icce.v32.sediment.80.

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Tidal flat reclamation works is an effective way to relieve the contradiction between supply and demand of land in the coastal region. The reclamation project in the bay will decrease tidal current velocities, change tidal currents field, then slowdown the water exchange in the bay ,which will influence water quality in the bay and increase sediment deposit at navigation channels. To study impacts of hydrodynamic environmental and sediment movement due to reclamation projects in Fangcheng Port, the physical model for tide-current and sediment was constructed in NHRI. The horizontal scale and vertical scale of the Fangcheng Port model is 1/660 and 1/100 respectively. The siltation in the bay and channels mainly caused by suspended load transport under the action of tidal currents and waves.The ability of water exchange in the bay is discussed by simulating sewage diffusion characteristics before and after reclamation projects in the bay. The physical model test results are shown the total tidal volume is decreased by 20% after the reclamation plan, of which 17.5% reduction in the East Bay, 2.5% in West Bay. The tidal currents field in the channel are discussed. The sedimentation rate increases 3-10cm/a in navigation channels and basins of Fangcheng Port.
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Sánchez-Donoso, Ramón, Nicholas Bugosh et José F. Martín-Duque. « Use of Remote Sensing Tools to Measure a Fluvial Geomorphic Design-Input Parameter for Land Reclamation ». Water 12, no 9 (25 août 2020) : 2378. http://dx.doi.org/10.3390/w12092378.

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Fluvial geomorphic approaches for reclamation landform design have been applied since 2000, mostly in mined lands, as an alternative to conventional landform design methods. Those approaches aim to reconstruct mature landforms and drainage networks that would develop within a natural catchment, after thousands of years of work performed by geomorphic processes. Some fluvial geomorphic design methods take specific measurements from natural and stable reference areas for initial input values for reclamation design. Valid reference areas can be difficult to find, can be in highly anthropized environments, or may be difficult to access. This paper evaluates the use of remote sensing tools to measure morphometric parameters in upper sections of agricultural land catchments considered for use as reference areas. The ridge to head of channel distance (Xrh) was the parameter of interest. We used land surface profiles developed from LiDAR (Laser Imaging Detection and Ranging) data and planimetric measurements from orthoimages to estimate Xrh. The results obtained by the two methods were encouraging but showed a significant difference. Ground truthing showed that ploughing obliterated between 19.5 and 22.4 m (on average) of the headwater section of first-order channels, reducing the channel length by 15.1 to 32.4%. Using a greater Xrh value than appropriate for near steady-state conditions as a design input for a geomorphic reclamation project would be expected to result in active erosion processes in the constructed reclamation to regain their missing channel length. We recognize the advantages and limitations of remote sensing methods for measuring the morphometric parameters of the landform relief design inputs. We show how these tools may be used to help select and prioritize reference areas, and warn about the use of disturbed landscapes as reference areas to assure the geomorphic stability of the constructed reclamation designs.
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Riduan, Rony, Riza Miftahul Khair, Lovina Gianina et M. Istiqlal Hasibuan. « One-Way Flow System Water Quality Modelling of Terantang Reclamation Channel ». IOP Conference Series : Earth and Environmental Science 999, no 1 (1 mars 2022) : 012019. http://dx.doi.org/10.1088/1755-1315/999/1/012019.

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Abstract The implementation of reclamation process in wetland has encountered some obstacles, such as the occurrence of pyrite oxidation, sedimentation, and accumulation of toxic materials, especially the concentration of Fe (iron) in the channel. The condition of the reclamation channel which is influenced by tidal events and environmental factors causes the dynamics of Fe concentration to be strongly influenced by hydrodynamic aspects and its interaction with dissolved and suspended particulates. An accurate model will be useful as a tool to evaluate alternative management of water systems to overcome the problem of Fe concentration accumulation in the tidal wetland reclamation channel. Fe fate and transport were modeled using a numerical model of hydrodynamics and water quality EFDC (Environmental Fluid Dynamic Code). The partition process separates the metal fraction into two phases (dissolved and solid), which is related to the value of the partition coefficient (Kp). The application of the partition process is considered to have a significant influence on the accuracy of the estimated Fe concentration. The simulation results of the model with the partition coefficient approach have better accuracy than the conventional model which tends to be over-predicted compared to the observation data. Simulation of one-way flow system shows a decrease of Fe concentration in the channel by an average of 52.9% compared to two-ways flow system. The application of one-way flow system is possible through the placement of flap gates that will direct the flow to the drainage channels.
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Liu, Chin-I., et Ruey-Shyong Shang. « CLOSURE OF TIDAL CHANNEL IN LAND RECLAMATION ». Coastal Engineering Proceedings 1, no 20 (29 janvier 1986) : 99. http://dx.doi.org/10.9753/icce.v20.99.

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The land reclamation of Lunwei subdistrict A in the development of Changhua Industrial Estate Project was commenced in May 1980. Fill sand was dredged by suction dredgers from borrow area and placed in the south and central parts of this subdistrict. Bamboo fence was used as sand retaining structure. In November, a new tidal channel occurred between two fill sand islands and across the head of seawall, it caused the increase of materials and the difficulty of construction of the seawall. Closure of the tidal channel was completed by constructed a sand embankment dike with low cost materials such as; bamboo piles, bamboo mattress and sand bags.
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R. Newlin, Dev, et C. Seldev Christopher. « Novel Random Valued Impulse Denoising Technique ». International Journal of Engineering & ; Technology 7, no 4.36 (9 décembre 2018) : 744. http://dx.doi.org/10.14419/ijet.v7i4.36.24233.

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The pictures in the advanced arrangement are generally corrupted by drive commotion which is because of the unexpected blunders in correspondence channels or electronic sensors. Most existing strategies fall flat at high clamor thickness. Here another versatile insertion procedure is foreseen for reclamation of exceptionally corrupted pictures by arbitrary esteemed drive clamor. This new method gives a more corrected preferred picture quality over the standard Versatile Middle Channel, Standard Middle Channel, Choice Based Calculation, Dynamic Exchanged middle Channel, Choice Based Un-symmetric Trimmed Middle Channel and altered Choice Based Un-symmetric Trimmed Middle Channel. The strategy anticipated is confirmed for its proficiency against various pictures and is found to give enhanced Pinnacle Motion to-Commotion Proportion.
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Lama, Giuseppe Francesco Cesare, Alessandro Errico, Simona Francalanci, Luca Solari, Federico Preti et Giovanni Battista Chirico. « Evaluation of Flow Resistance Models Based on Field Experiments in a Partly Vegetated Reclamation Channel ». Geosciences 10, no 2 (25 janvier 2020) : 47. http://dx.doi.org/10.3390/geosciences10020047.

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This study presents a methodology for improving the efficiency of Baptist and Stone and Shen models in predicting the global water flow resistance of a reclamation channel partly vegetated by rigid and emergent riparian plants. The results of the two resistance models are compared with the measurements collected during an experimental campaign conducted in a reclamation channel colonized by Common reed (Phragmites australis (Cav.) Trin. ex Steud.). Experimental vegetative Chézy’s flow resistance coefficients have been retrieved from the analysis of instantaneous flow velocity measurements, acquired by means of a downlooking 3-component acoustic Doppler velocimeter (ADV) located at the channel upstream cross section, and by water level measurements obtained through four piezometers distributed along the reclamation channel. The main morphometrical vegetation features (i.e., stem diameters and heights, and bed surface density) have been measured at six cross sections of the vegetated reclamation channel. Following the theoretical assumptions of the divided channel method (DCM), three sub-sections have been delineated in the reference cross section to represent the impact of the partial vegetation cover on the cross sectional variability of the flow field, as observed with the ADV measurements. The global vegetative Chézy’s flow resistance coefficients have been then computed by combining each resistance model with four different composite cross section methods, respectively suggested by Colebatch, Horton, Pavlovskii, and Yen. The comparative analysis between the modeled and the experimental vegetative Chézy’s coefficients has been performed by computing the relative prediction error (εr, expressed in %) under two flow rate regimes. Stone and Shen model combined with the Horton composite cross section method provides vegetative Chézy’s coefficients with the lowest εr.
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Moldamuratov, Zh N., A. A. Iglikov, E. B. Madaliyeva, S. Zh Daurbekova et A. Sh Asylbekov. « CROSS-SECTION CHANNELS OF HYDRAULICALLY AND STATICALLY STABLE SHAPE ». Bulletin of Kazakh Leading Academy of Architecture and Construction 86, no 4 (15 décembre 2022) : 199–209. http://dx.doi.org/10.51488/1680-080x/2022.4-20.

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The article presents the results of research on the substantiation of giving a stable shape of cross-section to the channels of hydro-reclamation systems of southern Kazakhstan. The calculations on the stability of irrigation channel slopes were made, as well as their design features and practical substantiation of stable profiles were presented. The shapes of stable slope were determined using of actual values of geotechnical parameters of slope soils. The results showed that the slope profile takes a stable shape during the channel operation, close to the parabolic.
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Xing, C. H., X. H. Wen, Y. Qian, D. Sun, P. S. Klose et X. Q. Zhang. « Fouling and cleaning of microfiltration membrane in municipal wastewater reclamation ». Water Science and Technology 47, no 1 (1 janvier 2003) : 263–70. http://dx.doi.org/10.2166/wst.2003.0065.

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This paper presents an investigation on fouling and cleaning of a tubular microfiltration membrane for municipal wastewater reclamation. A bi-level complex model, namely channel clogging and pore plugging, was introduced to elucidate the fouling mechanism. Based on 135 days of microfiltration of activated sludge, a preventive method for channel clogging was reasonably proposed and proven to be effective. Without channel clogging, the operation period was observed a five-fold increase on average, reaching 3-4 weeks. To remove pore plugging, a multi-step chemical cleaning was employed and further optimized in terms of temperature and alkaline concentration. Generally, the chemical cleaning could restore the membrane permeability to higher than 90%.
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Thèses sur le sujet "Reclamation channel"

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Sipahi, Sabri Ozgur. « Calibration Of A Grate On Sloping Channel ». Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607889/index.pdf.

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In this study a setup is designed and constructed in the Hydromechanics Laboratory of Middle East Technical University in order to observe the flow through grate inlets under different flow and geometry conditions. The rate of interception of flow is determined over a rectangular channel through preliminary experiments run on the tilting flume. The performance of the new set setup has been examined and grate efficiency is obtained both in terms of longitudinal slope and the Froude number. The results which are obtained show that the setup can be used to conduct experiments to obtain a general expression for grate efficiency.
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Farrell, Hannah Lucia, et Hannah Lucia Farrell. « Reclamation Practices and Impacts of a Pipeline Corridor in Southern Arizona : Seeding and Vehicle Trampling Impact Vegetation Establishment : Construction Alters Short-term Ephemeral Channel Morphology Trends ». Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/620633.

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Anthropogenic disturbances are increasing in arid lands, as are expectations to successfully minimize impacts to natural resources and reclaim sites to publicly acceptable levels. This research explores the effectiveness of reclamation practices on a 60 mile natural gas pipeline constructed in September of 2014 that spans from west of Tucson to the border of Mexico. First, a controlled field experiment was conducted to assess the effects of seeding, grazing, and trampling (vehicular, cattle, and human foot traffic) on the reclaimed pipeline Right-Of-Way (ROW). Vegetation establishment (native plant cover; undesirable plant cover; species richness; herbaceous biomass), soil movement, and plant functional group community development was compared among the treatments. Reclaimed ROW areas left to recover without seeding resulted in similar vegetation cover, species, and community composition as undisturbed desert areas, although the presence of undesirable species was greater. The combined impacts of grazing and trampling resulted in reduced vegetation establishment and increased soil erosion. Second, the impacts of the pipeline construction on ephemeral wash channels were analyzed in terms of channel morphology and riparian vegetation changes. Channel cross section dimensions were measured upstream of the ROW, downstream of the ROW, and within the ROW before and after the 2015 Monsoon season to evaluate impacts on channel morphology and erosion processes. High resolution aerial imagery taken before and after pipeline construction was used to evaluate changes in riparian vegetation cover. Reduced herbaceous vegetation cover downstream of the ROW was detected, which may have been the result of increased channel scour within the ROW and increased sediment deposition downstream of the ROW. This research improves our understanding of and may aid in selection of appropriate reclamation practices.
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Beaulieu, Antoine. « Farmers’ Responses to Drivers of Forest Cover Change : The Case of Mae Chaem District, Thailand ». Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36890.

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Empirical forest transition (shift from deforestation to reforestation) literature has historically struggled to establish a single universally-accepted forest transition “theory” due to various knowledge gaps hindering any efforts to do so. One such gap is the fact that very few studies have focused on how and why smallholder farmers respond to commonly accepted forest transition drivers, as well as how these responses impact forest cover and agricultural trends. Also, there remain many parts of the world where forest cover evolution has been insufficiently researched, as is the case of Mae Chaem district (Chiang Mai province, Thailand). Even though there are studies which claim forest loss occurred in the district between the 1990s and mid-2000s, there are few available records of forest cover evolution since then. To address these research needs, this thesis used secondary literature and spatial data, as well as semi-structured interviews and personal observations gathered during fieldwork in Mae Chaem district. It was first determined that forest cover in the district decreased between the 1990s and mid-2010s due to agricultural expansion. However, it appears that forest cover is expected to increase from 2016 to 2021 due to more strictly-enforced conservation measures set in motion by the Mae Chaem Model (a state-sponsored sustainable development model). These findings first suggest that the district might be currently in the early stages of a forest transition, its drivers being shifting forest policies and economic factors. Second, interviewed farmers resisted forest policies to optimize their crop productions before 2016, before beginning to develop more acceptant responses in early 2016 due to pressure from pro-conservation discourses and cognitive shifts regarding the value of protecting forest at the expense of agriculture. Also, farmers adopted ambiguous responses (motivated by their economic rationality) to pressure stemming from various economic factors, both prior and since 2016. With both environmental and socioeconomic issues deriving from these responses, the outputs from this study will hopefully help supplement existing forest transition studies on local populations responses to drivers of forest change. It is also expected to provide up-to-date information on existing and anticipated impacts of recent state development efforts, such as those deriving from the establishment of the Mae Chaem Model.
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Mirghasemi, Seyedeh Soudeh. « Agriculture, Dams, and Weather ». Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/579110.

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The first chapter investigates whether construction of the Bureau of Reclamation dams in the early twentieth century raise farm values and increase agricultural output? I construct a new county level panel data set from 1890 to 1920 with information on geography, climate, politics, agriculture, and major dams and then evaluate the effect of the Bureau of Reclamation dams on the value of farms and on crop productivity. Using fixed effect panel estimation, I find that new federal dam construction increased the average value of farm land by approximately 6.4 percent. When I apply an instrument to control for potential endogeneity, the effect of Bureau dams on the farm land value increases in size, although the estimate is no longer statistically significant. When examining the crop output, the only crop for which the dams had effects was alfalfa. In the second chapter I investigate the effect of the geographic, economic and political factors on dam construction at the beginning of the Bureau of Reclamation's operation in the American West. Applying county level data which has been linked from various data sources for the time period of 1900 to 1910, I show that the percentage of votes for Republicans in presidential elections has a significant and positive effect on major dam construction. The last chapter investigates the effect of climate change on US agriculture using county-level data from 1997 to 2007. Compared to previous contributions, we pay particular attention to the spatial heterogeneity across the climate zones and include the presence of extreme weather events. The lack of consideration for both effects may have led previous works to generate biased estimates and incorrect impact forecasts. While current approaches use projected climate variables derived from coarse resolution Global Climate Models (GCMs), we use data at a much finer resolution by relying on dynamically downscaled simulation data. Further, we pay particular attention to the spatial heterogeneity in the impact of climate among the climate zones. Chow-Wald tests indicate the presence of significant heterogeneity across zones in the effects of climate on land values.
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Prananto, Agnes Kristina. « The use of remotely sensed data to analyse spatial and temporal trends in vegetation patchiness within rehabilitated bauxite mines in the Darling Range, W.A. / ». Connect to this title, 2005. http://theses.library.uwa.edu.au/adt-WU2006.0012.

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Bell, Maria Aletta. « Monitoring rehabilitation success using remotely sensed vegetation indices at Navachab Gold Mine, Namibia ». Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97888.

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Thesis (MA)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: Remote sensing and vegetation indices were evaluated for its usefulness to monitor the success of the rehabilitation programme of the decommissioned tailings storage facility (TSF1) of the Navachab Gold Mine, Karibib, Namibia. The study aimed to objectively illustrate the rehabilitation progression from tailings (baseline) to soil (capping) and vegetation (planted as well as natural). Baseline data sets of 2004 and 2005 were compared with imagery of 2009, 2010 and 2011. All the images were subjected to panchromatic sharpening using the subtractive resolution merge (SRM) method before georegistration. As no recent accurate topographical maps were available of the study area, the May 2010 image was used as a reference image. All other images were georegistered to this image. A number of vegetation indices (VIs) were evaluated. The results showed that the normalised difference vegetation index (NDVI) and the transformed vegetation index (TVI) provided the most promising results. Although the difference vegetation index (DVI) and enhanced vegetation index (EVI) distinguished the vegetation, rock, and soil classes, it was not as successful as the other VIs in classifying the rain water pond. TVI and NDVI were further evaluated for their efficacy in detecting changes. This was done by generating a series of change images and by qualitatively comparing them to false colour images of the same period. Both the NDVI and TVI delivered good results, but it was found that the TVI is more successful when water is present in the images. The research concludes that change analyses based on the TVI is an effective method for monitoring mine rehabilitation programmes.
AFRIKAANSE OPSOMMING: Afstandswaarneming en plantegroei-indekse is ge-evalueer vir die gebruikswaarde daarvan om sukses van die rehabilitasieprogram vir die geslote slykdam of tailings storage facility (TSF1) van die Navachab Goudmyn, Karibib, Namibië vas te stel. Die studie se doelwit was om die progressie in die rehabilitasie van slyk (basislyn) na grond (dekmateriaal) en plantegroei (aangeplant en natuurlik) te illustreer. Basislyndatastelle 2004 en 2005 is vergelyk met 2009, 2010, en 2011 beelde. Al die beelde is panchromaties verskerp deur die subtractive resolution merge (RSM) metode voor georegistrasie uit te voer. Aangesien geen onlangse, akkurate topografiese kaarte van die studiegebied beskikbaar was nie, is die beeld vir Mei 2010 as ‘n verwysingsbeeld gebruik. Al die ander beelde is op die laasgenoemde beeld gegeoregistreer. Die resultate het gewys dat die normalised difference vegetation index (NDVI) en die transformed vegetation index (TVI) die mees belowende resultate lewer. Al het die difference vegetation index (DVI) en enhanced vegetation index (EVI) goed onderskei tussen plantegroeiklasse en grond- en gesteentesklasse was dit nie so suksesvol met die klassifikasie van die reënwaterpoel nie. TVI en NDVI is verder geëvalueer vir effektiwiteit om verandering waar te neem. Dit is gedoen deur ‘n reeks van veranderingsbeelde te skep en dit dan kwalitatief met die valskleur-beelde vir dieselfde tydperk te vergelyk. Beide die NDVI en TVI het goeie resultate gelewer, maar die TVI was meer suksesvol om beelde met water te klassifiseer. Die navorsing lei tot die gevolgtrekking dat veranderingsanalises met die TVI ‘n effektiewe metode vir die monitoring van rehabilitasie programme is.
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Esan, Adedeji O. « An integrated manufacturing strategy for implementation of lean manufacturing, six sigma and cadcam methodologies in a small medium manufacturing environment (SMME) ». Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4478.

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The world is changing rapidly for the engineering community. Sustainability in every sense has become the watchword¿in terms of product manufacture and performance, and responding to global market and environmental pressures. A well thought-out manufacturing strategy can help organisations make choices that support its overall business objectives, respond to new opportunities and challenges as they arise. However, manufacturing strategy configuration and deployment in SMME¿s is a neglected field in manufacturing strategy literatures. More importantly, the application of lean manufacturing, Six Sigma and CIM strategies are said to be more applicable to batch production environments and large manufacturing organisations but not to SMMEs that operates a job shop type operating characteristics and with limited resource availability. With recognition that most of these methodologies were originally conceptualised and implemented in large manufacturing environments with batch and flow type manufacturing architecture, the need to develop solutions specific to SMME¿s with job shop type operating characteristics (tooling reclamation industry in particular) is imperative. The fundamental essence of this research is the development of an integrated manufacturing strategy which is based on Lean-Six Sigma-MRP-CADCAM methodologies at the case company. The framework for deploying this strategy is based on inputs from a business environment analysis, a lean strategic planning module (based on production planning and manufacturing/product cost structure analysis) and a lean resource planning interface that is predicated on value stream analysis and simulation models. The material and information flows of the case company manufacturing systems were studied. The approach taken emphasis the well know value engineering concepts of multiple-stage manufacturing system accumulating costs/time between individual stages as well as by transfer/material handling and work-in-process. The study shows that maximisation of capacity and resource utilisation, queue less work flow and flexible labour policies that support the case company¿s manufacturing system offer potential for reform which can substantially enhance customer service, product quality and overall improvement in investment returns.
NTR Ltd and KTP programme
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Verbyla, Matthew Eric. « Pathogen Removal in Natural Wastewater Treatment and Resource Recovery Systems : Solutions for Small Cities in an Urbanizing World ». Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/6044.

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Sanitation, renewable energy, and food security are among the most pressing global development needs of the century, especially for small cities with rapid population growth. Currently, 53% of the world’s population either lacks access to improved sanitation or discharges fecal waste to the environment without treatment. Furthermore, 80% of food consumed in developing regions is produced by 500 million small farms, and while many of them are still rain-fed, irrigated agriculture is increasing. The post-2015 Sustainable Development Goals, recently adopted by the United Nations, include targets to address the water-energy-food nexus. Wastewater reuse in agriculture can be an important solution for these goals, if it is done safely. Globally, 18 – 20 million hectares of agricultural land are irrigated with wastewater, but much is untreated, unregulated, or unsanctioned, causing concerns and uncertainty about health risks. There is a need to better understand pathogen removal in natural and non-mechanized wastewater treatment systems, such as waste stabilization ponds (WSPs) and upflow anaerobic sludge blanket (UASB) reactors, which are commonly used in small cities and towns. Riverbank filtration (RBF) is also a natural technique used by farmers in developing countries to treat surface water polluted with untreated sewage, but pathogen removal in these systems has seldom been assessed in developing countries. The focus of this dissertation is on pathogen removal in natural and non-mechanized wastewater treatment and reuse systems, to evaluate the health implications of water reuse for irrigation, with the following three objectives: 1) assess the current understanding of virus removal in WSP systems through a systematic review of the literature; 2) measure the removal of viruses and their association with particles in systems with WSPs, UASB reactors, or both; and 3) assess the fate and transport of pathogens and fecal indicators in wastewater treatment systems with direct and indirect reuse for irrigation to estimate microbial risks. To advance the understanding of virus removal in WSP systems, a comprehensive analysis of virus removal reported in the literature from 71 different WSP systems revealed only a weak to moderate correlation of virus removal with theoretical hydraulic retention time (HRT). For each log10 reduction of viruses a geometric mean of 14.5 days of retention was required, but the 95th percentile of the data analyzed was 54 days. Also, whereas virus-particle association and subsequent sedimentation has been assumed to be an important removal mechanism for viruses in WSPs, the literature review revealed a lack of evidence to confirm the validity of this assumption. The association of human adenovirus (AdV) with wastewater particles was assessed in five full-scale wastewater treatment systems in Bolivia, Brazil, and the United States (two with only WSPs, two with a UASB reactor and WSPs, and one with only UASB reactors). A mesocosm study was also conducted with WSP water from one of the full-scale systems, and some samples were also analyzed for pepper mild mottle virus (PMMoV), F+ coliphage, culturable enterovirus (EV), norovirus (NoV), and rotavirus (RV). Results indicate that WSPs and UASB reactors affect virus-particle associations in different ways, which may differ for different viruses. In UASB reactor effluent, PMMoV was more associated with particles <180 >µm, showed no indication of settling in subsequent ponds, and appeared to degrade in pond sediments after 5 days. In contrast, AdV in UASB reactor effluent was associated with small and large particles, and in subsequent ponds, particle-associated AdV showed evidence of possible settling or more rapid decay at the water surface. AdV and culturable EV were also more volumetrically-concentrated in UASB reactor sludge than they were in untreated sewage, WSP water, UASB effluent, and WSP sediments, indicating that the reactors may cause these viruses to become entrapped and concentrated in granular sludge. Some viruses may be removed in the sludge, but others exit the reactors in solution and attached to particles. The resuspension of pellets from centrifuged UASB reactor sludge samples in an eluant buffer indicated reversible AdV association with granular sludge, but some associations with particles in solution may not be reversible. The fate and transport of pathogens and fecal indicators was assessed in Bolivia for two WSP systems with direct reuse for irrigation, and one on-farm RBF system used to treat surface water polluted by untreated sewage. In the WSP systems, despite HRTs of 10 days, pathogen and fecal indicator removal was generally ≤1-log10, possibly due to overloading and short-circuiting from sludge accumulation. The RBF system provided removals on the order of 2-log10 for protozoan parasites, 3-log10 or more for viruses, and 4-log10 or more for bacteria. The use of RBF also reduced cumulative estimated health burdens associated with irrigated lettuce. Irrigation of lettuce with untreated river water caused an estimated disease burden that represents 37% of the existing burden from acute diarrhea in Bolivia; when RBF was used, this decreased to only 1.1%, which is not epidemiologically-significant, and complies with the World Health Organization guidelines. Ratios of concentrations of microorganisms in irrigation water to their respective concentrations in soil or crops were calculated, to assess transfer from irrigation water to soil or crops. These ratios (with units mL g-1) were generally < 0.1 mL g-1 for coliphage, between 1 and 100 mL g-1 for Giardia and Cryptosporidium, and generally between 100 and 1,000 mL g-1 for helminth eggs. Higher ratios could indicate more efficient transfer from water to soil or crops, longer persistence in soil or on crops, or slower leaching away from soil or crops. The results from this research demonstrate that pathogen removal in full-scale natural wastewater treatment systems happens via complex mechanisms that vary with respect to pathogen type, treatment systems configuration, and other environmental and operational parameters. Future research and innovation efforts should focus on the use of a combination of natural and non-mechanized technologies, surface-flow systems (e.g., WSPs) and subsurface systems (e.g., RBF), applied at both semi-centralized (e.g., wastewater treatment plant) and decentralized levels (e.g., on farms), to evaluate how this affects the efficiency and resiliency of pathogen removal. Also, future research is needed to further elucidate reasons for the observed differences in virus-particle associations in natural wastewater treatment systems.
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Prananto, Agnes Kristina. « The use of remotely sensed data to analyse spatial and temporal trends in vegetation patchiness within rehabilitated bauxite mines in the Darling Range, W.A ». University of Western Australia. School of Earth and Geographical Sciences, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0012.

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[Truncated abstract] The assessment of rehabilitation success is time consuming and costly for bauxite miners because large areas of land (~550 ha per year) are involved. In some cases, rehabilitation results in patches of bare or sparsely vegetated soil. This study uses remote sensing imagery to evaluate the growth of vegetation in rehabilitated bauxite mines in the Darling Range, W.A. This work has five aims, which are to (1) compare vegetation biomass within rehabilitated areas and nearby native forest; (2) analyse temporal changes in vegetation growth within the selected rehabilitated areas, in particular rehabilitated areas with patches of bare soil; (3) compare vegetation growth pre- and post- mining; (4) identify the best type of remotely sensed data for this particular study area, and (5) develop an index, which can classify the degree of vegetation patchiness within rehabilitated mine sites. This information will enable rehabilitation workers to identify patches in rehabilitated areas that may require further remediation. The study used RADARSAT, nine years of Normalised Difference Vegetation Index (NDVI) maps (extracted from LANDSAT TM multivariate imagery and Quickbird imagery) and aerial photographs to evaluate forty-seven ~1 ha study sites. Image and map analyses were conducted mainly using ESRI’s software ArcGIS 8.3 and ER Mapper 6.4. Ground truthing was carried out to confirm and recognise the causes of bare patches within the rehabilitated mine sites ... The results indicate that differences in rehabilitation management do not affect this index but the extent of bare patches does. Due to the sensitivity of radar imagery to surface roughness, rehabilitated areas cannot be distinguished from the native forest using radar images. A building (crusher) appears to be the same as mature vegetation. Knowledge of the features in an area is therefore crucial when utilising RADARSAT. The beam elevation angle and profile of the RADARSAT image used, made superimposition of radar and optical imageries impossible. Speckle noise in RADARSAT images made it impossible to detect relatively small bare patches. In addition, the many cloud free days in Western Australia make optical imaging possible so that the ability of radar imagery to penetrate cloud is redundant for this type of study.
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ERRICO, ALESSANDRO. « "The effects of flexible vegetation on flow in drainage channels. Field surveys and modeling for roughness coefficients estimation" ». Doctoral thesis, 2017. http://hdl.handle.net/2158/1091161.

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Livres sur le sujet "Reclamation channel"

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McLean, Robert F. A regime stream channel reclamation approach for placer-mined watersheds. Juneau?] : Alaska Dept. of Fish and Game, Habitat and Restoration Division, 1997.

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Guo, Haipeng. Coastal groundwater system changes in response to large-scale land reclamation. New York : Nova Science Publishers, 2009.

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Cuadra, Manuel. Bitterfeld : Braunkohlebrachen : Probleme, Chancen, Visionen. München : Prestel, 1993.

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Burri, Ezio, et Piergiorgio Landini. Trasformazioni del paesaggio in aree di bonifica dell'Italia centro-meridionale in epoca post-unitaria : Atti della giornata di studi, Celano, 21 settembre 2011. Roma : Società geografica italiana onlus, 2013.

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Frequently asked questions on conducting phase 1 environmental site assessments and changes to the phase 1 ESA form. [Edmonton : Environmental Sciences Division], 2002.

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Office, General Accounting. Water subsidies : Basic changes needed to avoid abuse of the 960-acre limit : report to the chairman, Subcommittee on Water, Power and Offshore Energy Resources, Committee on Interior and Insular Affairs, House of Representatives / United States General Accounting Office. Washington, D.C : The Office, 1989.

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Jensen, Donald T. Precipitation frequencies, probable maximum precipitation and global climate change : Submitted to the United States Department of the Interior, Bureau of Reclamation, Denver Office, Denver, Colorado. Logan, Utah : Utah Climate Center, Utah State University, 1994.

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Jensen, Donald T. Precipitation frequencies, probable maximum precipitation, and global climate change : Submitted to the United States Department of the Interior, Bureau of Reclamation, Denver Office, Denver, Colorado. Logan, Utah : Utah Climate Center, Utah State University, 1994.

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Eissmann, Lothar. Das Mitteldeutsche Seenland : Vom Wandel einer Landschaft : Der Süden. Beucha : Sax, 2013.

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G, Zarger T., dir. Ecological recovery after reclamation of toxic spoils left by coal surface mining : Phase II an assessment of environmental changes following intensive remedial treatments. S.l : s.n, 1987.

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Chapitres de livres sur le sujet "Reclamation channel"

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Bahar, S. M., K. W. Shushmi, M. A. Rafy et Q. A. Mowla. « Jamuna–Brahmaputra River Natural Channel Design for Flood Control, Bank Erosion Protection, Navigation Improvement, and Land Reclamation ». Dans Lecture Notes in Civil Engineering, 499–512. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5547-0_45.

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Cheng, Haifeng, Pei Xin, Jie Liu, Fengfeng Gu, Qi Shen et Lu Han. « Morphological Evolution and Driving Factors of Tidal Flats in the Yangtze Estuary (China) During 1998–2019 ». Dans Lecture Notes in Civil Engineering, 1152–67. Singapore : Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_101.

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AbstractThis paper studies the morphological evolution and driving factors of the tidal flats in the Yangtze Estuary (YE), based on the bathymetric data over the last 20 years (1998–2019) and a three-dimensional numerical model (SWEM3D). The results show that: In the past two decades, the combined action of fluvial sediment decline and estuarine engineering has changed the morphological evolution trend of tidal flats in the YE. The fluvial sediment decline caused the decrease of suspended sediment concentration successively from the inner estuary to the mouth bar area (the outer estuary), which led to the erosion and steepening of the tidal flats in the YE, and the erosion of tidal flats in the inner estuary was earlier and more obvious than that in the mouth bar area. The estuarine engineering is the main controlling factor of the distribution and trend change of erosion-deposition in the adjacent tidal flat. The waterway regulation projects promoted the deposition of tidal flats within its sheltered area, while the reclamation and reservoir projects intensified the erosion of the lower tidal flats nearby. As for the remaining non-human-intervention tidal flats, those adjacent to the mainstream of ebb current in the inner estuary were significantly eroded, while those on the north side of the channel were slowly deposited due to the weaker hydrodynamics. In the future, the fluvial sediment supply may keep decreasing and maintain a lower level under the continued influence of anthropogenic activities in the Yangtze River basin, the unprotected tidal flats in the YE will face a risk of further erosion. It is necessary to take appropriate protection measures to improve the ecological service function of the tidal flats in the YE.
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Almassi, Ben. « Feminist Reclamations of Masculinity ». Dans Nontoxic : Masculinity, Allyship, and Feminist Philosophy, 43–59. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13071-7_4.

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AbstractResistance to discarding manhood and masculinity comes from not only conservatives but also avowed feminists like bell hooks, who sought to reclaim masculinity as not just compatible with but grounded in feminist values and projects. We turn in this chapter to feminist reclamations of masculinity, most notably (though not limited to) hooks’ We Real Cool and The Will to Change. There is a lot to admire in these efforts to reclaim feminist masculinity; much of what they identify as constituting better, more just, more mindful masculinity are indeed good human qualities. Yet as a viable guide for feminist men, these accounts fall short in one way or another.
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Peter, Jyotsna Kiran, Uday Shankar Pandey, Arjun Karmakar et Anjulata Suman Patre. « Microbial Assisted Soil Reclamation for Sustainable Agriculture in Climate Change ». Dans Agricultural Impacts of Climate Change, 191–215. Boca Raton : CRC Press, 2019- : CRC Press, 2019. http://dx.doi.org/10.1201/9780429326349-11.

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Gladysheva, Olga V., Elena V. Gureeva et Vera A. Svirina. « Changes in the Fertility of Agrogenic Soil During Chemical Reclamation ». Dans Sustainable Agriculture, 319–27. Singapore : Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8731-0_31.

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Corrêa, Thiago Bezerra, Tiago Zenker Gireli et Vinícius de Carvalho Neiva Pinheiro. « Land Reclamation Effects on Santos Estuary Inlet Stability ». Dans Climate Change in Santos Brazil : Projections, Impacts and Adaptation Options, 221–42. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96535-2_11.

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Gondhalekar, Daphne, Mohammed Al-Azzawi et Jörg E. Drewes. « Urban Water Reclamation with Resource Recovery as a Cornerstone of Urban Climate Change Resilience ». Dans Handbook of Climate Change Resilience, 1–22. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71025-9_178-1.

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Gondhalekar, Daphne, Mohammed Al-Azzawi et Jörg E. Drewes. « Urban Water Reclamation with Resource Recovery as a Cornerstone of Urban Climate Change Resilience ». Dans Handbook of Climate Change Resilience, 2075–96. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-93336-8_178.

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Arora, Sanjay, Y. P. Singh et Atul K. Singh. « Advances in Reclamation and Management of Salt Affected Soils for Sustainable Crop Production ». Dans Advances in Crop Production and Climate Change, 407–25. London : CRC Press, 2023. http://dx.doi.org/10.1201/9781003281948-14.

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Galeandro, Annalisa, Angelo Doglioni et Vincenzo Simeone. « Success of Reclamation Works and Effects of Climatic Changes in Taranto Area : South Italy ». Dans Engineering Geology for Society and Territory - Volume 1, 165–68. Cham : Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09300-0_31.

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Actes de conférences sur le sujet "Reclamation channel"

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Liu, Chin-I., et Ruey-Shyong Chang. « Closure of Tidal Channel in Land Reclamation ». Dans 20th International Conference on Coastal Engineering. New York, NY : American Society of Civil Engineers, 1987. http://dx.doi.org/10.1061/9780872626003.099.

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Hussein, Omar, Nermin Hamza et Hesham Hefny. « A proposed covert channel based on memory reclamation ». Dans 2015 IEEE Seventh International Conference on Intelligent Computing and Information Systems (ICICIS). IEEE, 2015. http://dx.doi.org/10.1109/intelcis.2015.7397244.

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Wang, Guixuan, Linyan Deng et Jie Zhao. « Sea Channel Consolidation Settlement Analysis of a Land Reclamation Project ». Dans Geo-Shanghai 2014. Reston, VA : American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413388.071.

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Cheung, Raymond W. M., Sam H. S. Liu, Gavin S. H. Toh, Steven Jenkins, M. K. Chong et Michael Chak. « Advanced Design and Construction of Marine Cut & ; Cover ELS Tunnel Cofferdam ». Dans The HKIE Geotechnical Division 42nd Annual Seminar. AIJR Publisher, 2022. http://dx.doi.org/10.21467/proceedings.133.2.

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The most challenging aspect of the CKR-KTW Contract is the construction of maximum 35m deep Underwater Tunnel (UWT) submerged in Kowloon Bay which is a typhoon shelter with marine constraints from several stakeholders such as Hong Kong China Gas requiring 60m wide navigation channel for refueling tankers, Kowloon City Ferry Pier (AMO Grade 2 Historic Structure) operations for public ferry service and the marine traffic impact to Kowloon Bay. To overcome the substantial adverse impact to the environment and marine traffic of Kowloon Bay area from the conforming scheme of full temporary reclamation, an optimized scheme was employed for the marine cut & cover ELS cofferdam using only partial temporary reclamation. The use of this advanced design and construction method not only provided robust structural design with water-tight cofferdam, it also resulted in substantially less cost, construction risks / time and reduced disturbance to marine environment and traffic at Kowloon Bay due to substantially less temporary reclamation required.
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Gong, Y., Y. Wu et Y. Du. « Research on the Correlation Between Land Use/Land Cover Changes and Lyme Disease in Maryland ». Dans The 2nd International Symposium on Land Reclamation and Ecological Restoration (LRER 2017). Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742 : CRC Press, 2017. http://dx.doi.org/10.1201/9781315166582-109.

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Tong, J., Y. Hu et Y. Li. « Effects of Land Use Change on Soil Organic Carbon in a Karst Region ». Dans The 2nd International Symposium on Land Reclamation and Ecological Restoration (LRER 2017). Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742 : CRC Press, 2017. http://dx.doi.org/10.1201/9781315166582-110.

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Ryherd, Julia, Colleen Small, Richard Guthrie, Song Ling et Hawley Beaugrand. « Pipeline Geohazards Screening : Using Results of Flood Scour Assessments to Provide a Simple Screening Tool for Pipeline Watercourse Crossings for Western Canada ». Dans 2020 13th International Pipeline Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ipc2020-9452.

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Abstract Pipeline watercourse crossing assessments typically require field investigations, river surveys, and detailed scour analyses to predict whether or not a pipeline may be subject to flood scour deeper than their depth of cover (DOC). Flood scour algorithms rely on discharge, median grain size, and some measure of channel cross-sectional area to determine the tractive force of water on the stream bed. These algorithms are applied to non-cohesive sediments typical of fluvial systems. To better define pipeline threats at a screening level, reducing unnecessary field and analytical expenses, and focusing effort on credible hazards, we developed a flood scour screening tool that uses return period discharge (Q) as the only input requirement. In order to develop the tool, we plotted the results of over 400 detailed scour assessments for several grain sizes (1100 data points) completed in Alberta and British Columbia, in 2017, 2018 and 2019. The results clearly show the importance of channel variability and grain size, but also show definable discharge related trends. We compared the results of the National Engineering Handbook (NEH) and the United States Bureau of Reclamation (USBR) methods, both of which use industry accepted algorithms. We developed, and provided herein, relationships that can be used to screen out scour assessments at watercourse crossings where DOC is already known, or to support and expedite field programs where DOC is being obtained. If only Q is known, then a single graph, or single equation is used for a given region using fine sand as the assumed median grain size. If both Q and median grain size are known, then the user can determine a slightly less conservative result from a series of complementary equations. In all cases, we propose using the mean result of the USBR method, originally intended for design, to fully capture the potential variability in the calculated NEH flood scour. While conservative, the tool is easy to use, and we expect it will substantially reduce the assessment effort on smaller, or less erosive streams.
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Ugryumova, Alexandra, Mikhail Zamakhovski, Lyudmila Pautova et Denis Olgarenko. « FORMATION OF HUMAN RESOURCES POLICY AND LABOR POTENTIAL OF THE MELIORATIVE INDUSTRY OF THE AGRICULTURAL INDUSTRY OF THE RUSSIAN FEDERATION ». Dans GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b1/v2/25.

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Scientifically substantiated personnel industry policy contributes to the implementation of an innovative development scenario, provides better results with reduced production costs, which determines the relevance of the studying. The main goal of the work was identified factors and indicators which have regulatory influence on the state and development of the personnel potential of the industry. Diagnostics of the labor potential of land reclamation by federal districts revealed leaders and outsiders of sectoral development. The studying made it possible to justify the steady trend of the shortage of reclamation personnel in comparison with the calculated indicators. Objective and subjective reasons and factors that hinder the effective using of the industry’s personnel potential are distinguished. The concept of industry’s labor potential is clarified. The studying of changes in labor productivity in agriculture has confirmed a twofold increasing in this indicator for the period from 2014 to 2018. Methodological approaches to the indicators of assessing the labor potential of the reclamation industry are substantiated. The groups of socio-economic indicators of the reclamation industry’s effectiveness are identified. The methodology for determining the quantitative characteristics of labor potential on irrigated lands is specified, which is depended on the area of irrigated lands. The labor potential of the reclamation industry in terms of staffing the industry is studied. The main positive and negative trends of the personnel policy and the labor potential’s formation of the agro-industrial complex’s reclamation sector of the Russian Federation are specified, the industry personnel policy is assessed as passive, which does not allow predicting the needs for industry personnel, evaluate staff activities and analyze personnel problems. Highlighted characteristic trends in personnel potential in the federal district and regions of the Russian Federation allow: to develop unified approaches to manage this industry development factor; to develop recommendations to improve the efficiency of advanced training and retraining of personnel in irrigated agriculture. The implementation of the recommendations will contribute to increase the efficiency of the managing the human potential’s process of irrigated agriculture at the level of federal, regional and municipal authorities of the reclamation sector of the agro-industrial complex of Russia.
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Sterlini, Paul, Tim Chesher et Daesu Eo. « Prediction of Morphological Changes in Response to a Tideland Reclamation ». Dans Fifth International Conference on Coastal Dynamics. Reston, VA : American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40855(214)38.

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Zhang, Huaguo, et Dongling Li. « Changes Monitoring of Reclamation Land Use Patterns with Remote Sensing Images ». Dans 2010 International Conference on Multimedia Technology (ICMT). IEEE, 2010. http://dx.doi.org/10.1109/icmult.2010.5631104.

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