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Journal articles on the topic 'Hydraulic policies'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Ciullo, Alessio, Karin M. De Bruijn, Jan H. Kwakkel, and Frans Klijn. "Systemic Flood Risk Management: The Challenge of Accounting for Hydraulic Interactions." Water 11, no. 12 (2019): 2530. http://dx.doi.org/10.3390/w11122530.

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Rivers typically flow through multiple flood-protected areas which are clearly interconnected, as risk reduction measures taken at one area, e.g., heightening dikes or building flood storage areas, affect risk elsewhere. We call these interconnections ‘hydraulic interactions’. The current approach to flood risk management, however, neglects hydraulic interactions for two reasons: They are uncertain and, furthermore, considering them would require the design of policies not only striving for risk reduction, but also accounting for risk transfers across flood-protected areas. In the present pape

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Duarte Abadía, Bibiana, Rutgerd Boelens, and Lucas du Pré. "Mobilizing Water Actors and Bodies of Knowledge. The Multi-Scalar Movement against the Río Grande Dam in Málaga, Spain." Water 11, no. 3 (2019): 410. http://dx.doi.org/10.3390/w11030410.

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Just as in other parts of Spain, the Guadalhorce Valley, Málaga, has a long history of policies based on ‘hydraulic utopianism’ (regenerationist and Franco-ist), bent on ‘reorganizing’ political, geographic, and human nature. Residents of the neighboring sub-basin, the Río Grande valley, have seen how these policies, designed to transfer rural water to modern urban centers, have turned the Guadalhorce hydrosocial territory into a ‘hydraulic dystopia’. In this article, we examine how Río Grande valley residents mobilized to maintain control over the development and use of their resources, livel

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Rizk, M. "Performance Requirements of Hydraulic Pumps/Motors Related to Non-Conventional Energy Sources." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power Engineering 203, no. 3 (1989): 201–5. http://dx.doi.org/10.1243/pime_proc_1989_203_028_02.

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Hydraulic pumps/motors can be connected to different systems which utilize non-conventional energy. These systems produce unsteady output energy even when a control policy is adopted to stabilize it. Therefore, in such systems, hydraulic pumps/motors work under dynamic conditions. This paper presents examples of wind energy conversion systems with different control policies. The available daily wind-power distributions at El-Minia, Wadi El-Natrun and Hurghada in Egypt are calculated. A suitable cut-in wind power is chosen for each site. The maximum rate of change of the available power is dete

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Davis, Charles E. "Shaping State Fracking Policies in the United States." State and Local Government Review 49, no. 2 (2017): 140–50. http://dx.doi.org/10.1177/0160323x17712555.

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This article presents an overview of research focusing on how state and local governments have regulated oil and gas over the past decade following the expanded industry use of new technologies like hydraulic fracturing (fracking) and horizontal drilling. A consequence of fracking was a substantial increase in energy production accompanied by the emergence of policy concerns about how resource development and jobs could be balanced with efforts to maintain environmental quality. Researchers have dealt with three key concerns in the following sections: (1) determining whether state and local of

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Drusiani, R., P. Bersani, and P. Penta. "The ancient Lake Albano tunnel: origins and considerations regarding the hydraulic regulation achieved." Water Supply 7, no. 1 (2007): 269–76. http://dx.doi.org/10.2166/ws.2007.031.

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A brief description of the geomorphological, historical, and archaeological aspects of the Colli Albani area, where the volcanic lakes of Albano and Nemi are situated, is followed by an examination on the problem of the policies of lake Albano regulation, by means of an ancient tunnel dating at least to the 5th century BC. In particular, it is investigated how, in the presence of even severe atmospheric phenomena, it was possible to control fluctuations in the level of the lake on the banks of which there were large settlements. Mathematical model simulations indicate the effectiveness of the

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Finkel, Madelon L., Jake Hays, and Adam Law. "Modern Natural Gas Development and Harm to Health: The Need for Proactive Public Health Policies." ISRN Public Health 2013 (May 16, 2013): 1–5. http://dx.doi.org/10.1155/2013/408658.

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High-volume horizontal hydraulic fracturing of shale formations has the potential to make natural gas a significant, economical energy source, but the potential for harm to human health is often dismissed by proponents of this method. While adverse health outcomes of medical conditions with long latency periods will not be evident for years and will depend on the exposure, duration of exposure, dose, and other factors, we argue that it would be prudent to begin to track and monitor trends in the incidence and prevalence of diseases that already have been shown to be influenced by environmental

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Almeida, Maria Antónia. "The use of rural areas in Portugal: Historical perspective and the new trends." Revista Galega de Economía 29, no. 2 (2020): 1–17. http://dx.doi.org/10.15304/rge.29.2.6750.

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The Portuguese landscape and its rural areas are the result of thousands of years of human presence, particularly since the late nineteenth century, when protectionist public policies were put in place to promote food self-sufficiency. During the Estado Novo regime, four main agricultural policies were enforced: wheat campaigns, internal colonization, agricultural hydraulic systems and reforestation. Nevertheless, there was a massive rural exodus, starting mainly in the 1960s, which resulted in the depopulation of 80 per cent of the territory. Nowadays, less than 20 per cent of the Portuguese

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COURTNEY, CHRIS. "At War with Water: The Maoist state and the 1954 Yangzi floods." Modern Asian Studies 52, no. 6 (2018): 1807–36. http://dx.doi.org/10.1017/s0026749x16001049.

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AbstractThis article offers a critical reappraisal of the Maoist state's response to the 1954 Yangzi floods. It uses a variety of sources, including previously classified government reports and oral history testimony, to challenge the official narrative. It argues that, far from being a remarkable victory for the new government, the flood was a humanitarian catastrophe that caused almost 150,000 deaths. Government hydraulic policies were partly to blame, as the vast majority of disaster victims were located in rural areas that were flooded deliberately in order to protect cities. In addition t

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Zeng, Qingliang, Wenting Liu, Lirong Wan, Chenglong Wang, and Kuidong Gao. "Maintenance Strategy Based on Reliability Analysis and FMEA: A Case Study for Hydraulic Cylinders of Traditional Excavators with ERRS." Mathematical Problems in Engineering 2020 (November 19, 2020): 1–11. http://dx.doi.org/10.1155/2020/2908568.

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A simple and effective mechanical parts maintenance approach with lower cost is urgently needed by the cost-sensitive manufactures for traditional excavators (HE). This paper proposes maintenance strategy for hydraulic cylinders (HC) of HE with energy regeneration and recovery system (ERRS). Reliability analysis and FMEA of historical failure data are applied to make maintenance strategy. In this study, the failure data required for reliability analysis are collected from the manufacturers and users over two and a half years, Excel is used as statistical tool, Minitab is used for parameter est

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Xiang, Long, Guangbai Cui, Xing Chen, Qicheng Zhang, and Yongshu Zhu. "Systematic methodology and practice of a co-governance program for five waters in a typical area of China." Water Policy 17, no. 5 (2015): 804–14. http://dx.doi.org/10.2166/wp.2015.176.

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A co-governance program for five waters (CPFW), including sewage treatment, flood prevention, drainage, water supply and saving, is an innovative concept in water resource management. It includes current and near future system projects and advanced management policies for water utilization and protection. In this paper, the scientific connotation of CPFW is explained by multidisciplinary theory. Based on current guidance and technology, evaluation targets and water management countermeasures are specified. Combining hydraulic engineering and their characteristics, operable approaches for CPFW

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Sidek, Lariyah Mohd, Aminah Shakirah Jaafar, Wan Hazdy Azad Wan Abdul Majid, et al. "High-Resolution Hydrological-Hydraulic Modeling of Urban Floods Using InfoWorks ICM." Sustainability 13, no. 18 (2021): 10259. http://dx.doi.org/10.3390/su131810259.

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Malaysia, being a tropical country located near the equatorial doldrums, experiences the annual occurrence of flood hazards due to monsoon rainfalls and urban development. In recent years, environmental policies in the country have shifted towards sustainable flood risk management. As part of the development of flood forecasting and warning systems, this study presented the urban flood simulation using InfoWorks ICM hydrological−hydraulic modeling of the Damansara catchment as a case study. The response of catchments to the rainfall was modeled using the probability distributed moisture (PDM)

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Mustaqim, Faisal, Wilson Kosasih, and Ahmad Ahnad. "Pemeliharaan Mesin Hydraulic Shear Menggunakan Pendekatan Reliability Centered Maintenance dan Manajemen Suku Cadang." Jurnal Rekayasa Sistem Industri 9, no. 3 (2020): 153–62. http://dx.doi.org/10.26593/jrsi.v9i3.4023.153-162.

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Production equipment that has a high operating time becomes a vital aspect in supporting the operational system, and its maintenance becomes a critical point that must be planned. This research discusses maintenance policies that focus on machine reliability and parts availability to produce proper maintenance actions, optimal maintenance scheduling and good spare-parts management. The research was conducted on a developing manufacturing company engaged the field of agricultural aids in the city of Bekasi. This study focused on hydraulic shear machines because they have the largest downtime va

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KIKUMORI, Yoshito, Wataru KAWATO, and Junichi YOSHITANI. "ANALYSIS OF DEVELOPMENT POLICIES AND FUNCTIONAL REQUIREMENTS AND PROGRAM DESIGN OF GENERAL-PURPOSE PLATFORM FOR HYDRAULIC AND HYDROLOGICAL ANALYSIS SOFTWARE." Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 69, no. 1 (2013): 1–13. http://dx.doi.org/10.2208/jscejhe.69.1.

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OU, J. P., and H. LI. "THE REGIONAL ENGINEERING DAMAGE AND RECONSTRUCTION STRATEGY IN WENCHUAN EARTHQUAKE OF CHINA." Journal of Earthquake and Tsunami 05, no. 02 (2011): 189–216. http://dx.doi.org/10.1142/s1793431111000929.

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Wenchuan earthquake, occurred on 12 May 2008, has caused a catastrophe. This paper first presents an overview of this earthquake disaster. The characteristics of earthquake ground motion records are analyzed. The geohazards, seismic damage of hydraulic engineering structures, building structures, structures for transportation, and their chain effects are summarized. Policies and actions on emergency rescue, relief, settlement, earthquake damage assessment and evaluation, the plan on retrofitting school buildings, and recovery are also introduced. The status of the reconstruction is also survey

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Hunt, J. C. R. "Inland and coastal flooding: developments in prediction and prevention." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 363, no. 1831 (2005): 1475–91. http://dx.doi.org/10.1098/rsta.2005.1580.

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We review the scientific and engineering understanding of various types of inland and coastal flooding by considering the different causes and dynamic processes involved, especially in extreme events. Clear progress has been made in the accuracy of numerical modelling of meteorological causes of floods, hydraulics of flood water movement and coastal wind–wave-surge. Probabilistic estimates from ensemble predictions and the simultaneous use of several models are recent techniques in meteorological prediction that could be considered for hydraulic and oceanographic modelling. The contribution of

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van Staveren, Martijn F., Jeroen F. Warner, and M. Shah Alam Khan. "Bringing in the tides. From closing down to opening up delta polders via Tidal River Management in the southwest delta of Bangladesh." Water Policy 19, no. 1 (2016): 147–64. http://dx.doi.org/10.2166/wp.2016.029.

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The southwest coastal delta of Bangladesh is not only geographically home to a dynamic interplay between land and water, and between fresh surface water and saline tides, but also to contentious debates on flood management policy. It has been argued that dealing with delta floods in this region boils down to adopting either open or closed approaches. This paper longitudinally structures the open-or-closed debate based on a number of emblematic water management projects in the region. Departing from a typical open wetland history, river and polder embankments increasingly started to constrain f

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Garrote, Julio, Andrés Díez-Herrero, Mar Génova, José Bodoque, María Perucha, and Pablo Mayer. "Improving Flood Maps in Ungauged Fluvial Basins with Dendrogeomorphological Data. An Example from the Caldera de Taburiente National Park (Canary Islands, Spain)." Geosciences 8, no. 8 (2018): 300. http://dx.doi.org/10.3390/geosciences8080300.

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Flash floods represent one of the more usual natural hazards in mountain basins, and, combined with the lack of reliable flow data and the recreational use of the drainage basin by tourists and hikers, there is a significant risk of catastrophe. Here, we present a dendro-geomorphological reconstruction of a past flash flood event in the Caldera de Taburiente N.P. (Canary Islands, Spain), an ungauged drainage basin in the SW side of the volcanic island of La Palma. We couple two-dimensional hydraulic modelling in a highly-resolved topographic environment (LiDAR data) with (1) peak flow data for

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Molina, José-Luis, Santiago Zazo, Ana-María Martín-Casado, and María-Carmen Patino-Alonso. "Rivers’ Temporal Sustainability through the Evaluation of Predictive Runoff Methods." Sustainability 12, no. 5 (2020): 1720. http://dx.doi.org/10.3390/su12051720.

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The concept of sustainability is assumed for this research from a temporal perspective. Rivers represent natural systems with an inherent internal memory on their runoff and, by extension, to their hydrological behavior, that should be identified, characterized and quantified. This memory is formally called temporal dependence and allows quantifying it for each river system. The ability to capture that temporal signature has been analyzed through different methods and techniques. However, there is a high heterogeneity on those methods’ analytical capacities. It is found in this research that t

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Acreman, M. C., and M. J. Dunbar. "Defining environmental river flow requirements – a review." Hydrology and Earth System Sciences 8, no. 5 (2004): 861–76. http://dx.doi.org/10.5194/hess-8-861-2004.

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Abstract. Around the world, there is an increasing desire, supported by national and regional policies and legislation, to conserve or restore the ecological health and functioning of rivers and their associated wetlands for human use and biodiversity. To achieve this, many organisations have developed methods for defining “environmental flows‿, i.e. the flow regime required in a river to achieve desired ecological objectives. This paper reviews the various methods available and suggests a simple categorisation of the methods into four types: look-up tables, desk-top analysis; functional analy

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Husain, Faisal H. "Water for the Saints of Baghdad: The Hydrology of a Sacred Ottoman Geography." Journal of Early Modern History 25, no. 4 (2021): 319–44. http://dx.doi.org/10.1163/15700658-bja10025.

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Abstract Following the conquest of Baghdad in 1534, the Ottoman Empire pursued a wide range of policies to maintain the shrines of Muslim saints buried in the province, many of whom were revered by both the Sunni Ottomans and the Shiʿi Safavids. Ottoman endeavors entailed active management of the Tigris and Euphrates waters to provision inland shrines with water and guard those on the riverbanks from damaging floods. With a hydraulic infrastructure, the Ottomans appropriated the memories of the saints of Baghdad and reinforced their territorial claims to the province in the face of a rising Sh

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Ben Abdessalem, Wahiba, Sami Karaa, and Amira S. Ashour. "Renewable Energy Management with a Multi-Agent System." International Journal of Energy Optimization and Engineering 4, no. 3 (2015): 49–59. http://dx.doi.org/10.4018/ijeoe.2015070104.

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Renewable energy generation (Wind, solar …) is rising rapidly around the world. Energy storage is being today realistic with some kind of variable renewable electricity sources such as the Pumped Hydraulic Storage (PHS). The incorporation of the PHS requires different policies since there are a variety of electric generation technologies that can be exploited commonly with the PHS. The energy management system, the scheduling of the generation units is a crucial problem for which adequate solutions can optimize the energy supply. This paper focuses on the applicability of the PHS technology in

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Rizzo, Pietro, Emma Petrella, Antonio Bucci, et al. "Studying Hydraulic Interconnections in Low-Permeability Media by Using Bacterial Communities as Natural Tracers." Water 12, no. 6 (2020): 1795. http://dx.doi.org/10.3390/w12061795.

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Knowledge about the processes governing subsurface microbial dynamics in and to groundwater represents an important tool for the development of robust, evidence-based policies and strategies to assess the potential impact of contamination sources and for the implementation of appropriate land use and management practices. In this research, we assessed the effectiveness of using microorganisms as natural tracers to analyze subsurface dynamics in a low-permeability system of northern Italy. Microbial communities were investigated through next-generation sequencing of 16S rRNA gene both to study

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Tilmant, A., W. Kinzelbach, D. Juizo, L. Beevers, D. Senn, and C. Casarotto. "Economic valuation of benefits and costs associated with the coordinated development and management of the Zambezi river basin." Water Policy 14, no. 3 (2011): 490–508. http://dx.doi.org/10.2166/wp.2011.189.

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The Zambezi river basin is of utmost importance to its riparian countries in terms of energy, food production and natural resources. Even though there is no legal agreement on the sharing of Zambezi waters, an assessment of basin-wide economically efficient allocation policies will provide valuable information at a time where water managers and policy makers in the region are negotiating the establishment of a unified river basin institution, called the Zambezi Watercourse Commission (ZAMCOM). That institution would be responsible for, amongst other things, the design of allocation rules. In t

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Decaix, Jean, Anthony Gaspoz, Vlad Hasmatuchi, et al. "Enhanced Operational Flexibility of a Small Run-of-River Hydropower Plant." Water 13, no. 14 (2021): 1897. http://dx.doi.org/10.3390/w13141897.

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Over the last two decades, the public policies for promoting new renewable energies allowed the growth of such energies around the world. Due to their success, the policies are changing, forcing the producers to adapt their strategy. For instance, in Switzerland, the feed-in tariff system has been modified in 2018 to promote an electricity production from renewable energies that matches the demand. For small hydraulic power plants owners, such a change requires to increase the flexibility of their fleet. The SmallFLEX project, led by HES-SO Valais, aims at demonstrating on the pilot site of Gl

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Ebhota, Williams S., and Freddie L. Inambao. "Facilitating greater energy access in rural and remote areas of sub-Saharan Africa: Small hydropower." Energy & Environment 28, no. 3 (2017): 316–29. http://dx.doi.org/10.1177/0958305x16686448.

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Flowing water has hydraulic energy that can be transformed into electrical energy, sub-Saharan Africa has an abundance of hydro resources that are untapped. In this study, various barriers limiting the use of small hydropower to tap the abundant hydro potentials for power generation are discussed. These barriers include insufficient fund; lack of adequate manufacturing infrastructure; lack of adequate power generation and distribution policies; inaccurate hydrological data; insufficient human and power infrastructure capacities; and inadequate domestic and regional participation in design and

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Bottasso, Carlo L., Stefano Cacciola, Alessandro Croce, and Lorenzo Dozio. "Load Reduction in Lead–Lag Dampers by Speed-Scheduled Aperture and Modulated Control of a Bypass Valve." Journal of the American Helicopter Society 57, no. 2 (2012): 16–28. http://dx.doi.org/10.4050/jahs.57.022005.

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Existing hydraulic dampers are passive devices, and their damping characteristics cannot be adapted to the varying damping needs of each different flight condition of a rotorcraft. Therefore, dampers and their interfaces to the rotor system are constantly subjected to large damping forces, which contribute to their damage and wear. In this work, we consider the possible use of a bypass valve as a means to reduce loads while still providing the required amount of damping for safe flight. Two different policies for the use of the bypass are considered: In the first and simplest of the two, the v

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Duarte-Abadía, Bibiana, Rutgerd Boelens, and Tatiana Roa-Avendaño. "Hydropower, Encroachment and the Re-patterning of Hydrosocial Territory: The Case of Hidrosogamoso in Colombia." Human Organization 74, no. 3 (2015): 243–54. http://dx.doi.org/10.17730/0018-7259-74.3.243.

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Mega-hydraulic projects tend to produce severe social and environmental impacts, with burdens and benefits unevenly distributed among different social groups, regions, and scales. This triggers socioenvironmental conflicts, since “territory” has incommensurable functions and values for the diverse parties. This article examines the dominant human-nature interactions that underlie recent hydropower developments and the reconfiguration of the hydrosocial network in Colombia's Sogamoso basin. We use the Echelon of Rights Analysis (ERA) to examine conflicts over hydrosocial patterning, involving s

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Nascimento, Lucigleide Nery, and Mimi Larsen Becker. "Hydro-businesses: National and Global Demands on the São Francisco River Basin Environment of Brazil." International Review of Social History 55, S18 (2010): 203–33. http://dx.doi.org/10.1017/s0020859010000556.

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SummaryThe São Francisco River provided very obvious, close-by forms of sustenance for local communities. Beginning in the mid-1950s, the river became the place for large hydro-electric facilities, large-scale flooding, and population resettlement. A decade later, the federal government began working on pilot irrigation projects that would lead to areas described today as the Brazilian California. Hydro-power for Brazilian cities such as Recife and Salvador and irrigation for grapes and mangoes destined for the United States and Europe are among the eco-system services this river supplies. The

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BA, Amadou. "Energy situation of Senegal: sub-sector of electricity." Journal de Physique de la SOAPHYS 2, no. 1a (2021): C20A06–1—C20A06–6. http://dx.doi.org/10.46411/jpsoaphys.2020.01.06.

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Senegal's energy consumption is dominated by oil products and biomass. The electricity sub-sector, which accounts for only 10.4% of total energy consumption, far behind biomass 41.6% and oil products 39.2%, is remains dominated by thermal units. The objective of this study is to do an analysis of the electricity sub-sector. It shows a dependence on imports of oil and gas to meet our demand. Important policies have been developed to think about energy independence by exploiting our renewable energies potential, 5kWh / m² / day for solar, average wind speed estimated at 4m / s for wind. The libe

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RASUL, GOLAM. "Political ecology of the degradation of forest commons in the Chittagong Hill Tracts of Bangladesh." Environmental Conservation 34, no. 2 (2007): 153–63. http://dx.doi.org/10.1017/s0376892907003888.

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Indigenous people have widely been blamed for degrading South Asia's montane forest resources through the practice of shifting cultivation, yet some studies have revealed that indigenous people used forests in a sustainable way for centuries until external intervention. The history of external intervention in the forests of South Asia is more than two centuries old. The process of degradation of forest resources requires understanding of the political and social processes that condition access, control and management of the land and resources involved. The Chittagong Hill Tracts (CHT) of Bangl

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Agbonaye, A. I., and O. C. Izinyon. "Best-Fit Probability Distribution Model for Rainfall Frequency Analysis of Three Cities in South Eastern Nigeria." Nigerian Journal of Environmental Sciences and Technology 1, no. 1 (2017): 34–42. http://dx.doi.org/10.36263/nijest.2017.01.0024.

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Rainfall frequency analysis is the estimation of how often rainfall of specified magnitude will occur. Such analyses are helpful in defining policies relating to water resources management. It serves as the source of data for flood hazard mitigation and the design of hydraulic structures aimed at reducing losses due to floods action. In this study rainfall frequency analysis for three (3) cities in South Eastern Nigeria were carried out using annual maximum series of daily rainfall data for the stations. The objective of the study was to select the probability distribution model from among six

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Foolad, Foad, Trenton E. Franz, Tiejun Wang, et al. "Feasibility analysis of using inverse modeling for estimating field-scale evapotranspiration in maize and soybean fields from soil water content monitoring networks." Hydrology and Earth System Sciences 21, no. 2 (2017): 1263–77. http://dx.doi.org/10.5194/hess-21-1263-2017.

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Abstract. In this study, the feasibility of using inverse vadose zone modeling for estimating field-scale actual evapotranspiration (ETa) was explored at a long-term agricultural monitoring site in eastern Nebraska. Data from both point-scale soil water content (SWC) sensors and the area-average technique of cosmic-ray neutron probes were evaluated against independent ETa estimates from a co-located eddy covariance tower. While this methodology has been successfully used for estimates of groundwater recharge, it was essential to assess the performance of other components of the water balance s

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de Souza Costa, Carlos Eduardo Aguiar, Claudio José Cavalcante Blanco, and José Francisco de Oliveira-Júnior. "IDF curves for future climate scenarios in a locality of the Tapajós Basin, Amazon, Brazil." Journal of Water and Climate Change 11, no. 3 (2019): 760–70. http://dx.doi.org/10.2166/wcc.2019.202.

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Abstract Changes in the global climate are attributed to the levels of greenhouse gases. Thus, future scenarios (Representative Concentration Pathways – RCPs) have been developed to explore the impact of different climate policies on the world. The RCPs are essential tools for General Circulation Models (GCMs) to simulate future climate changes. Curves that associate Intensity, Duration and Frequency (IDF) are used in forecasts and are fundamental for the design of hydraulic projects and risk management. The objective of this study was to design IDF curves for the RCP 4.5 and 8.5, using data f

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Ramos, H. M., M. Mello, and P. K. De. "Clean power in water supply systems as a sustainable solution: from planning to practical implementation." Water Supply 10, no. 1 (2010): 39–49. http://dx.doi.org/10.2166/ws.2010.720.

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Energy efficiency and renewable energy sources have drawn a greater attention by EU, in particular for climate change policies as it can substantially cut down CO2 emissions to meet EU environmental obligations. It is well established that in drinking pipe systems Pressure Reducing Valves (PRV) are used as a mean for excess energy dissipation for the purpose of pressure control. This type of solution can be adopted, as a mitigation method to control the system losses, in particular, the available overload, which must have to be dissipated to avoid leakage or rupture occurrence in the pipe syst

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Rojas Venegas, Pablo M., and Christian D. Espinoza. "Habitat suitability for Chilean silverside (Basilichthys microlepidotus) in the Mataquito River, Maule Region: a geospatial approach." Marine and Freshwater Research 69, no. 8 (2018): 1301. http://dx.doi.org/10.1071/mf17263.

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Habitat suitability for the Chilean silverside (Basilichthys microlepidotus) in the Mataquito River, located in the Maule Region, was evaluate using geospatial analysis tools. Data were recorded in 2011 (a total of 40 fixed sampling stations) along the Mataquito River, as a result of five limnological surveys (i.e. January, March, June, August and November) in order to characterise the habitat and estimate the abundance of the Chilean silverside in the river. Preference curves were used to describe the dependence of Chilean silverside on relevant physicochemical, hydromorphological and biologi

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Teräväinen, Tuula. "Negotiating Water and Technology—Competing Expectations and Confronting Knowledges in the Case of the Coca Codo Sinclair in Ecuador." Water 11, no. 3 (2019): 411. http://dx.doi.org/10.3390/w11030411.

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Recent and on-going mega-hydraulic development in the global South implies profound socio-technical, ecological, territorial and cultural transformations at different levels and spaces of society. The transformations often involve conflicts and also new governance arrangements between different knowledge regimes, local practices and national and global frameworks of climate mitigation, water resources management and the green economy. Significantly, they also entail varying expectations concerning the meaning of water and the political promises of technology in advancing more sustainable futur

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Bell, Adam N., Maria A. Hernandez, Kevin Kremer, and Daniel J. Mallinson. "Geologic History, Hydrology, and Current Public Policy: The Case of Radionuclides and Water Quality in Pennsylvania’s Marcellus Shale Region." Case Studies in the Environment 2, no. 1 (2018): 1–11. http://dx.doi.org/10.1525/cse.2018.001388.

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The natural gas industry is a boon to the economy of the United States and will continue to expand in the following decades. Hydraulic fracturing (fracking), however, produces much waste and it must be determined how to dispose of unwanted byproducts of natural gas drilling, such as produced wastewater, solid scale, and oil. Radionuclides such as uranium were deposited in the Marcellus Shale millions of years ago and are now being returned to the surface in produced water from fracking. The presence of radionuclides creates a policy conflict between laws that protect public health and the econ

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Ferrero Bermejo, Jesús, Juan F. Gómez Fernández, Fernando Olivencia Polo, and Adolfo Crespo Márquez. "A Review of the Use of Artificial Neural Network Models for Energy and Reliability Prediction. A Study of the Solar PV, Hydraulic and Wind Energy Sources." Applied Sciences 9, no. 9 (2019): 1844. http://dx.doi.org/10.3390/app9091844.

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The generation of energy from renewable sources is subjected to very dynamic changes in environmental parameters and asset operating conditions. This is a very relevant issue to be considered when developing reliability studies, modeling asset degradation and projecting renewable energy production. To that end, Artificial Neural Network (ANN) models have proven to be a very interesting tool, and there are many relevant and interesting contributions using ANN models, with different purposes, but somehow related to real-time estimation of asset reliability and energy generation. This document pr

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González Cubero, Josefina, and Alba Zarza Arribas. "The built memory: presenting the colonization villages in Spain by the newsreel of State NO-DO." SHS Web of Conferences 63 (2019): 10001. http://dx.doi.org/10.1051/shsconf/20196310001.

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The newsreel of State used to show to Spanish society a determined image of architecture, conditioned by the political needs of Franco’s Regime. In this case, the subject of the cinematographic image of villages of colonization of the Tagus valley as presented by the NO-DO newsreel (Noticiarios y Documentales Cinematográficos) is studied. NO-DO was originally created as a propaganda tool and an instrument for the diffusion of “specially relevant” news from that time period. The analysis of the architecture built by the National Institute of Colonization (INC) and showed in different editions o

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Ahmad, Firoz, Ahmad Yusuf Adhami, and Florentin Smarandache. "Neutrosophic Optimization Model and Computational Algorithm for Optimal Shale Gas Water Management under Uncertainty." Symmetry 11, no. 4 (2019): 544. http://dx.doi.org/10.3390/sym11040544.

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Shale gas energy is the most prominent and dominating source of power across the globe. The processes for the extraction of shale gas from shale rocks are very complex. In this study, a multiobjective optimization framework is presented for an overall water management system that includes the allocation of freshwater for hydraulic fracturing and optimal management of the resulting wastewater with different techniques. The generated wastewater from the shale fracking process contains highly toxic chemicals. The optimal control of a massive amount of contaminated water is quite a challenging tas

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Kasiulis, Egidijus, Petras Punys, Algis Kvaraciejus, Antanas Dumbrauskas, and Linas Jurevičius. "Small Hydropower in the Baltic States—Current Status and Potential for Future Development." Energies 13, no. 24 (2020): 6731. http://dx.doi.org/10.3390/en13246731.

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Small hydropower (SHP) plays an important role in the Baltic States as a reliable and efficient source of electricity from renewable sources. This study presents the historical development, current status, and possible trends for the future development of SHP in the Baltic States with insights into the legal background and development policies for SHP in Estonia, Latvia and Lithuania. For the assessment of hydraulic structures in the Baltic States, the historical data was used supplemented with data from hydropower associations, the national departments of statistics, electricity transmission

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Zischg, Jonatan, Peter Zeisl, Daniel Winkler, Wolfgang Rauch, and Robert Sitzenfrei. "On the sensitivity of geospatial low impact development locations to the centralized sewer network." Water Science and Technology 77, no. 7 (2018): 1851–60. http://dx.doi.org/10.2166/wst.2018.060.

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Abstract In the future, infrastructure systems will have to become smarter, more sustainable, and more resilient requiring new methods of urban infrastructure design. In the field of urban drainage, green infrastructure is a promising design concept with proven benefits to runoff reduction, stormwater retention, pollution removal, and/or the creation of attractive living spaces. Such ‘near-nature’ concepts are usually distributed over the catchment area in small scale units. In many cases, these above-ground structures interact with the existing underground pipe infrastructure, resulting in hy

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Stucki, Peter, Moritz Bandhauer, Ulla Heikkilä, et al. "Reconstruction and simulation of an extreme flood event in the Lago Maggiore catchment in 1868." Natural Hazards and Earth System Sciences 18, no. 10 (2018): 2717–39. http://dx.doi.org/10.5194/nhess-18-2717-2018.

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Abstract. Heavy precipitation on the south side of the central Alps produced a catastrophic flood in October 1868. We assess the damage and societal impacts, as well as the atmospheric and hydrological drivers using documentary evidence, observations and novel numerical weather and runoff simulations. The greatest damage was concentrated close to the Alpine divide and Lago Maggiore. An atmospheric reanalysis emphasizes the repeated occurrence of streamers of high potential vorticity as precursors of heavy precipitation. Dynamical downscaling indicates high freezing levels (4000 m a.s.l.), extr

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Cesano, Daniele, Emilio Lèbre La Rovere, Martin Obermaier, et al. "As Experiências da Coalizão Adapta Sertão na Disseminação de Tecnologias e Estratégias de Adaptação à Mudança Climática para o Agricultor Familiar do Semiárido Brasileiro (The experience of the Adapta Sertão Coalition in Disseminating Climate Change...)." Revista Brasileira de Geografia Física 4, no. 6 (2012): 1336. http://dx.doi.org/10.26848/rbgf.v4i6.232776.

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Este artigo descreve a experiência da coalizão Adapta Sertão na experimentação e disseminação de sistemas produtivos que possam tornar o agricultor familiar do Semiárido mais resiliente aos impactos da variação climática atual e da mudança do clima no futuro. Durante as experimentações, a coalizão teve que enfrentar várias barreiras ligadas à falta de integração entre políticas públicas existentes e projetos pilotos em comunidades locais. Hoje, a adaptação à mudança do clima não está sendo considerada na implementação de obras hídricas de pequeno e médio porte, que são de grande importância po

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Fusco, Francesco, Vincenzo Allocca, Silvio Coda, Delia Cusano, Rita Tufano, and Pantaleone De Vita. "Quantitative Assessment of Specific Vulnerability to Nitrate Pollution of Shallow Alluvial Aquifers by Process-Based and Empirical Approaches." Water 12, no. 1 (2020): 269. http://dx.doi.org/10.3390/w12010269.

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Shallow aquifers of coastal and internal alluvial plains of developed countries are commonly characterized by the challenging management of groundwater resources due to the intense agricultural and industrial activities that determine a high risk of groundwater contamination. Among the principal origins of pollution in these areas are agricultural practices based on the amendment of soils by nitrate fertilizers, which have been recognized as one of the most severe environmental emergencies for which specific policies and regulations have been issued (e.g., EU Directive 2006/118/EC). In such a

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Yiğen, Melek, and Murat Tekiner. "An Overview of Evapotranspiration Guide for Irrigated Crops in Turkey." Turkish Journal of Agriculture - Food Science and Technology 7, no. 2 (2019): 266. http://dx.doi.org/10.24925/turjaf.v7i2.266-274.2245.

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The “Action Plan for the Water Use in Agriculture Activation Program” in the Tenth Five-Year Development Plan, prepared by The Ministry of Development for the period 2014-2018, is one of the most important indicators of the increasing importance of water resources and irrigation. It’s published according to Blaney-Criddle method with the data of the Crop Evapotranspiration Guideline in 1982, for a guide to be updated by General Directorate of Agricultural Research And Policies (TAGEM) and General Directorate of State Hydraulic Works (DSI) in 2013, using the Food and Agriculture Organization (F

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Bilașco, Ștefan, Sanda Roșca, Iuliu Vescan, Ioan Fodorean, Vasile Dohotar, and Paul Sestras. "A GIS-Based Spatial Analysis Model Approach for Identification of Optimal Hydrotechnical Solutions for Gully Erosion Stabilization. Case Study." Applied Sciences 11, no. 11 (2021): 4847. http://dx.doi.org/10.3390/app11114847.

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The accentuated degradation of agricultural lands as a result of deep erosion processes is the main problem identified in abandoned agricultural lands under the rainfall intensities, increasing number of hot days, indirectly under the impact processes derived from them (soil erosion, vegetation drying, etc.), as well as inadequate or poor management policies implemented by local authorities. The present study aims to develop and present a methodology based on GIS spatial analysis to choose the best hydro-amelioration solution for the arrangement of a complex ravine that negatively affects the

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Francipane, Antonio, Dario Pumo, Marco Sinagra, Goffredo La Loggia, and Leonardo Valerio Noto. "A paradigm of extreme rainfall pluvial floods in complex urban areas: the flood event of 15 July 2020 in Palermo (Italy)." Natural Hazards and Earth System Sciences 21, no. 8 (2021): 2563–80. http://dx.doi.org/10.5194/nhess-21-2563-2021.

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Abstract. In the last few years, some regions of the Mediterranean area have witnessed a progressive increase in extreme events, such as urban and flash floods, as a response to the increasingly frequent and severe extreme rainfall events, which are often exacerbated by the ever-growing urbanization. In such a context, the urban drainage systems may not be sufficient to convey the rainwater, thus increasing the risk deriving from the occurrence of such events. This study focuses on a particularly intense urban flood that occurred in Palermo (Italy) on 15 July 2020; it represents a typical pluv

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Wicke, Andrew, Thair Patros, and Gary Parkin. "Lateral groundwater flow and pond interactions during dry and wet years." SURG Journal 9, no. 1 (2017): 27–39. http://dx.doi.org/10.21083/surg.v9i1.3821.

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Groundwater and surface water are tightly coupled elements of the hydrologic cycle that have often been treated as separate entities. Future climate change modelling has predicted that hydrologic cycle changes, namely increasing drought frequency and flood-type events, are likely to occur. These events may directly impact the quality and quantity of both groundwater and surface water. Future water management policies must therefore be based on an understanding of how interactions between groundwater and surface water will change with a warming climate. The aim of this study was to model and an

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Alvares Tenenwurcel, Marcelo, Maíse Soares de Moura, Adriana Monteiro da Costa, et al. "An Improved Model for the Evaluation of Groundwater Recharge Based on the Concept of Conservative Use Potential: A Study in the River Pandeiros Watershed, Minas Gerais, Brazil." Water 12, no. 4 (2020): 1001. http://dx.doi.org/10.3390/w12041001.

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Water resources have been increasingly impacted due to the growth of water demand associated with environmental degradation. In this context, the mapping of groundwater recharge potential has become attractive to water managers as it can be used to direct public policies and conserve this natural asset. The present study modifies (improves) a spatially explicit model to determine groundwater recharge potential at the catchment scale, testing it in the Pandeiros River basin located in the state of Minas Gerais, Brazil. The model is generally based on the water balance approach and the input var

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