Relevant bibliographies by topics / Erosion diffuse

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Erosion diffuse'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Erosion diffuse"

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López-Pintor, Antonio, Javier Sanz-Cañada, Ernesto Salas, and Alejandro Rescia. "Assessment of Agri-Environmental Externalities in Spanish Socio-Ecological Landscapes of Olive Groves." Sustainability 10, no. 8 (2018): 2640. http://dx.doi.org/10.3390/su10082640.

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Traditional agricultural systems and their spatial context constitute socio-ecological landscapes for their long co-evolutionary history. However, these systems not only generate positive but also negative agri-environmental externalities, such as soil erosion, diffuse pollution and potential wild biodiversity degradation. In this paper, we present a methodological approach for developing and testing indicators to estimate the effects of these externalities, especially designed to be used to help guide land-use policy changes. Our results show that the indicators proposed can recognize the dif
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Afshar-Mohajer, Nima, and Ayoob Torkian. "Diffuse Emissions of Particles from Iron Ore Piles by Wind Erosion." Environmental Engineering Science 28, no. 5 (2011): 333–39. http://dx.doi.org/10.1089/ees.2010.0055.

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Pineux, N., B. Michel, X. Legrain, C. L. Bielders, A. Degré, and G. Colinet. "Diachronic soil surveys: A method for quantifying long-term diffuse erosion?" Geoderma Regional 10 (September 2017): 102–14. http://dx.doi.org/10.1016/j.geodrs.2017.06.001.

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Nanney, R. D., D. W. Fryrear, and T. M. Zobeck. "Wind Erosion Prediction and Control." Water Science and Technology 28, no. 3-5 (1993): 519–27. http://dx.doi.org/10.2166/wst.1993.0455.

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Few regions of the United States are entirely safe from wind erosion. Whenever the soil surface is loose and dry with limited crop residue cover, and the wind sufficiently strong, soil erosion will occur. Soil erosion by wind causes diffuse pollution, loss of topsoil, reduced crop production, and damage to both public and private facilities. Factors contributing to the wind erosion process can vary daily. This complex process presents a challenge to the science of wind erosion prediction and control. USDA Agricultural Research Service is developing a new Wind Erosion Prediction System (WEPS) t
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Vašát, R., R. Kodešová, A. Klement, and O. Jakšík. "Predicting oxidizable carbon content via visible- and near-infrared diffuse reflectance spectroscopy in soils heavily affected by water erosion." Soil and Water Research 10, No. 2 (2016): 74–77. http://dx.doi.org/10.17221/18/2015-swr.

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Conboy, P. J., I. J. M. Johnson, T. Jaspan, and N. S. Jones. "Idiopathic diffuse erosion of the skull base presenting as cerebrospinal fluid rhinorrhoea." Journal of Laryngology & Otology 112, no. 7 (1998): 679–81. http://dx.doi.org/10.1017/s0022215100141441.

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AbstractWe present an unusual case of generalized erosion of the skull base. We have not found a similar case reported in the world literature. The presenting symptom was spontaneous cerebrospinal fluid (CSF) rhinorrhoea which arose from a bony defect associated with herniation of the right temporal lobe into the sphenoid sinus. We discuss the management of such a case including imaging of the skull base and the endoscopic repair of the bony defect.
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Cerdan, Olivier, Magalie Delmas, Philippe Négrel, et al. "Contribution of diffuse hillslope erosion to the sediment export of French rivers." Comptes Rendus Geoscience 344, no. 11-12 (2012): 636–45. http://dx.doi.org/10.1016/j.crte.2012.10.011.

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Sheley, Roger L., James S. Jacobs, and Michael F. Carpinelli. "Distribution, Biology, and Management of Diffuse Knapweed (Centaurea diffusa) and Spotted Knapweed (Centaurea maculosa)." Weed Technology 12, no. 2 (1998): 353–62. http://dx.doi.org/10.1017/s0890037x00043931.

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Diffuse knapweed, a biennial or short-lived perennial, and spotted knapweed, a perennial, are taprooted Eurasian weeds invading rangeland in the western United States and Canada. Knapweed (Centaureaspp.) invasion is associated with reductions in biodiversity, wildlife, and livestock forage, and increased erosion. Spotted knapweed grows to about 1 m and usually has purple flowers, whereas diffuse knapweed is slightly shorter, usually with white flowers. Persistent flower bracts on diffuse knapweed bear a rigid terminal spine about 8 mm long with four or five pairs of shorter lateral spines. Bra
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Clark, Heather Lynn, Lijo C. Illipparambil, and Sandhya Khurana. "Mediastinal pancreatic pseudocyst masquerading as diffuse alveolar haemorrhage." BMJ Case Reports 14, no. 7 (2021): e240677. http://dx.doi.org/10.1136/bcr-2020-240677.

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Pancreatic pseudocyst formation with extension into the mediastinum is an uncommon complication of pancreatitis that can result in numerous pulmonary and cardiac complications. We present a case of a 56-year-old man with a history of recurrent pancreatitis who presented with haemoptysis. His initial workup was consistent with diffuse alveolar haemorrhage for which he was treated with glucocorticoids. After failure to improve, further imaging demonstrated a complex fluid collection in the mediastinum consistent with extension of his pre-existing pancreatic pseudocyst, leading to erosion into th
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Behrendt, H., and A. Bachor. "Point and diffuse load of nutrients to the Baltic Sea by river basins of North East Germany (Mecklenburg-Vorpommern)." Water Science and Technology 38, no. 10 (1998): 147–55. http://dx.doi.org/10.2166/wst.1998.0396.

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The results of a study on the riverine nutrient emissions and loads of nine river basins of the country Mecklenburg-Vorpommern to the Baltic Sea are presented for the period 1992 to 1994. The basins represent about 76% of the Baltic Sea catchment area of Mecklenburg-Vorpommern. The population living in the basins causes point emissions of 1752 tN/a and 293 tP/a. The analysis of diffuse emissions of nutrients is based on digitized maps of the land use and the soil types, the livestock numbers in the basins and measurements on the nutrient concentrations in the groundwater and drainage areas. Th
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Dissertations / Theses on the topic "Erosion diffuse"

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Jaafar, Mokhtar. "Soil erosion, diffuse source pollution and sediment problems associated with maize cultivation in England." Thesis, University of Exeter, 2010. http://hdl.handle.net/10036/98234.

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This thesis reports an investigation of soil erosion problems associated with maize cultivation in England. To place the investigation into a broader context, the study commences with a review of soil erosion problems more generally, before focusing on the specific on-site and off-site problems associated with maize cultivation. Agricultural statistics are used to quantify the recent expansion of maize cultivation in England and attention is directed to both the temporal trends and spatial patterns involved. A major expansion of maize cultivation occurred in England between 1990 and 2000. Part
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Nouhou, Bako Amina. "Modélisation numérique de l’érosion diffuse des sols : interaction gouttes-ruissellement." Thesis, Orléans, 2016. http://www.theses.fr/2016ORLE2027/document.

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L’objectif de cette thèse est de proposer un modèle d’érosion diffuse qui intègre les principaux processus de ce phénomène (détachement, transport, sédimentation) et qui prend en compte l’interaction des gouttes de pluie avec ces processus. Dans un premier temps, nous avons établi une loi de détachement par la pluie qui inclut l’effet des gouttes et celui de l’épaisseur de la lame d’eau qui couvre la surface du sol. Pour obtenir cette loi, une étude numérique avec le logiciel Gerris a permis de modéliser les cisaillements créés par l’impact des gouttes sur des épaisseurs de lame d’eau variable
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BENKHADRA, HASSANE. "Battance, ruissellement et erosion diffuse sur les sols limoneux cultives determinisme et transfert d'echelle de la parcelle au petit bassin versant." Orléans, 1997. http://www.theses.fr/1997ORLE2070.

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L'objectif de ce travail etait d'approfondir les connaissances sur la mobilisation et le transport de particules solides par erosion hydrique dans les zones d'agriculture intensive sur sols limoneux. Il s'agissait en particulier, d'etudier le determinisme et la variabilite spatiale et temporelle du ruissellement et de l'erosion diffuse a l'echelle du bassin versant elementaire. Nous avons combine plusieurs echelles d'etude pour identifier et hierarchiser les facteurs de risque de ruissellement et d'erosion. Nous avons ensuite cherche a etablir un modele empirique simple en combinant les facteu
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MARTIN, PHILIPPE. "Pratiques culturales, ruissellement et erosion diffuse sur les plateaux limoneux du nord ouest de l'europe. Application aux intercultures du pays de caux." Paris, Institut national d'agronomie de Paris Grignon, 1997. http://www.theses.fr/1997INAP0011.

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La modification des pratiques culturales en interculture est souvent evoquee pour lutter contre les inondations boueuses que connaissent les plaines limoneuse du nord-ouest de l'europe. Pour aller dans ce sens nous approfondissons la caracterisation des etats du milieu a l'origine du ruissellement et de l'erosion diffuse des parcelles en interculture ainsi que le classement, par rapport au ruissellement et a l'erosion diffuse, des pratiques inter-culturales. Nous definissons 5 itineraires techniques inter-culturaux, representatifs de la diversite agricole regionale et contrastes quant aux comp
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Tiecher, Tales. "Fingerprinting sediment sources in agricultural catchments in southern Brazil." Thesis, Poitiers, 2015. http://www.theses.fr/2015POIT2255/document.

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La connaissance des principales sources diffuses de sédiments permettrait d'améliorer l'utilisation des ressources publiques investies dans les stratégies de gestion des sols. Les méthodes de traçage (fingerprinting) conventionnelles basées sur la composition géochimique sont laborieuses et nécessitent une préparation importante des échantillons. Cette étude visait à rechercher les sources de sédiments dans des bassins versants agricoles du Rio Grande do Sul (sud du Brésil) et d'évaluer l'utilisation des outils spectroscopiques comme technique alternative. La superficie des bassins versants ét
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Peverini, Luca. "Etude des procédés de croissance de couche et de décapage ionique par mesures de diffusion spéculaire et diffuse de rayons." Phd thesis, Université Joseph Fourier (Grenoble), 2005. http://www.theses.fr/2005GRE10022.

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Une nouvelle technique basée sur la diffusion des rayons X et un montage adapté ont été conçus et implémentés sur la ligne de lumière BM5 de l'ESRF. L'instrument permet l'étude in-situ et en temps réel de la rugosité d'une surface par diffusion en incidence rasante. L'interaction des rayons X avec la surface, analysée dans le cadre de la théorie des perturbations scalaire du premier ordre, permet d'exprimer les paramètres caractérisant une surface par sa densité spectrale de puissance. En final les valeurs de rugosité, de longueur de corrélation, de conformité de la rugosité, et les exposants
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Tiecher, Tales. "Identificação de fontes de sedimento em bacias hidrográficas rurais do sul do Brasil." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/3367.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Knowledge of the main diffuse sources of sediment can enhance efficiency in the use of public resources invested in soil conservation management strategies. Conventional fingerprinting methods based on geochemical composition are time-consuming and require critical preliminary sample preparation. In this context, spectroscopic methods can be less labor-intensive, cheap, and viable alternative for this purpose. The present study aimed to quantify the sediment sources supplied to rivers in agricultural catchments of Rio Grande do S
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Pradhan, Sudeep S. "The Effect Of Viscosity On The Erosion Of Gradient- Zone In A Laboratory Solar Pond." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/233.

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Double diffusive phenomena occur in many natural systems and in a variety of engineering applications, such as solar ponds. In a solar pond, the erosion of gradient zone due to convection and diffusion is the main cause of inefficiency and hence, requires lot of maintenance. In this thesis, control of erosion of the gradient zone in a solar pond situation has been studied through experiments and transient numerical simulations. A laboratory solar pond was setup in a tank of size 19cm X 19cm X 19cm, and was heated from below. A polymer additive, Carboxy Methyl Cellulose (CMC) was used to increa
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Furieri, Bruno. "Erosion éolienne de tas de stockage de matières granulaires sur sites industriels : amélioration des méthodes de quantification des émissions." Phd thesis, Université de Valenciennes et du Hainaut-Cambresis, 2012. http://tel.archives-ouvertes.fr/tel-00853659.

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L'érosion éolienne des matières granulaires (minerais, charbons,. . . ) est un des facteurs influençant grandement la qualité de l'air dans l'environnement proche de nombreux sites industriels. L'objectif principal de ce travail est l'amélioration des méthodologies de quantification des émissions des sources diffuses, notamment à partir d'une meilleure prise en compte de l'exposition éolienne des sources que sont les tas de stockage et des répartitions granulométriques des matières présentes sur les sites de stockage. Les observations sur sites industriels montrent que les régions proches des
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Henrique, Cesar Sperchi. "Regionalização hidrológica de vazões e de cargas difusas de sólidos suspensos totais para o programa ProdutorES de Água e o pagamento de serviços ambientais. Estudo de caso: bacia hidrográfica do rio Benevente, ES." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-14042010-151953/.

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O sistema de pagamento por serviços ambientais de uma bacia hidrográfica pode ser economicamente atrativo e ecologicamente importante. Programas como o Produtor de Água compensam economicamente proprietários a montante da bacia que utilizam de manejo adequado do uso do solo, e do reflorestamento, para evitar a erosão hídrica, o aumento de cargas poluidoras difusas, e aumentar a disponibilidade e qualidade de água. Por conseqüência usuários de água, a jusante da bacia, são beneficiados, por exemplo, as estações de tratamento de água. Este trabalho tem como objetivo, a partir de metodologia
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Books on the topic "Erosion diffuse"

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Dixon, Rosalind, and David Landau. Abusive Constitutional Borrowing. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192893765.001.0001.

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We live in a golden age of comparative constitutional law. Liberal democratic ideas have diffused readily around the world, and certain features such as judicial review and constitutional rights are now nearly universal. At the same time, recent years have seen a pronounced trend toward the erosion of democracy. This book argues that the rhetorical triumph of liberal democratic constitutionalism, and the tendency toward democratic retrenchment, are fully consistent phenomena. Legal globalization has a dark side: norms intended to protect and promote liberal democratic constitutionalism can oft
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Book chapters on the topic "Erosion diffuse"

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Speed*, Robert C., and Hai Cheng†. "Marine terrace evolution of windward Barbados." In Emergence and Evolution of Barbados. Geological Society of America, 2021. http://dx.doi.org/10.1130/2021.2549(01).

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ABSTRACT The geomorphic evolution of southeastern windward Barbados is embodied in the development of a terraced seaward island slope on a tectonically rising scarp. The island slope is wholly erosional and a product of marine and subaerial processes. Modulation of the slope by terraces has occurred fundamentally by marine erosion at eustatic stillstands but includes morphologic additions by limestone deposition. The ongoing phase of morphologic development and island emergence began at or before ca. 700 ka. Emergence has proceeded at an increasing rate northwestward along the island’s southeastern coastline. The terraced island slope is markedly affected by post-terrace denudation. As many as eight marine terraces are preserved on the windward island slope below the planed surface of the Central Highlands, which is counted as terrace 1. Relics of an upper set of terraces are perched on the face of Second High Cliff, the ancient erosional margin of the oldest limestone capping Barbados. Second High Cliff developed by successive marine incisions over a probably long duration preceding oxygen isotope stage 9. A lower terrace set was excised in stages 9 through 5a in the siliciclastic island foundation or (and) in limestone cover of preceding terraces. Marine terrace floors extend seaward from an erosional backcliff and shoreline angle to a younger erosional cutoff. The most broadly preserved terrace floors indicate the following systematic succession of seaward profile elements: narrow upper ramp; broad upper flat; lower ramp; and on one, a lower flat. Carbonate cover is chiefly clastic on the upper ramp and flat, and chiefly reefal on the lower ramp. Most shoal-water reefal facies appear to be in fringe reef blankets. Terrace profile geometries are explained by a simple theory of wave abrasion in proportion to duration of sea level at a shoreline. At stillstands, the wave impact caused large shoreline recession and development of flats, whereas in transgression and regression, rapid sea-level change permitted only minor recession. Corresponding differences in cover facies are explained as functions of duration of breaking waves and seabed stability. Widespread post-terrace denudation is attributed to floods of upland provenance, local overland flow, and marine flooding. Riverine processes have produced channelization and a high degree of terrace preservation on the interfluves in the steeper, foundation-based northern windward region. This differs markedly from the more diffuse, shallow gullying and stripping of the limestone-covered shallow slopes of the southern region. An intensely stormy spell is suggested between stages 5e and 5c.
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Orr, David W. "Loving Children: The Political Economy of Design." In The Nature of Design. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195148558.003.0029.

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We are shocked when violence erupts in schoolyards or when a sixyear- old child kills another in cold blood. But the headlines, which sensationalize such tragedies, reveal only the tip of what appears to be a larger problem that, given our present priorities, will only intensify. Youthful violence is symptomatic of something much bigger evident in diffuse anger, despair, apathy, the erosion of ideals, and rising level of teen suicide (up three-fold since 1960). Nationwide, 17 percent of children are on Ritalin, a central nervous system stimulant. Adults often respond with rejection and hostility, making a bad problem worse. We hire more psychologists and sociologists to study our children and more counselors to advise them about issues such as “anger management.” As a result there are libraries of information about childhood, child psychology, child health, child nutrition, child behavior, and dysfunctional families, much of it quite beside the point. Then in desperation we hire more police to lock children up. We are crossing into a new pattern of relations between the generations, and much depends on how well we understand what is happening, why it is happening, and what is to be done about it. The deeper causes of this situation are not apparent in the daily headlines and news reports. Dysfunctional families, depression, youthful violence, and the rising use of chemicals to sedate children are symptoms of something larger. Without anyone saying as much and without anyone intending to do so, we have unwittingly begun to undermine the prospects of our children and, at some level, I believe that they know it. This essay is a meditation on the larger patterns of our time and their effects on children. My argument is that the normal difficulties of growing up are compounded, directly and indirectly, by the reigning set of assumptions, philosophies, ideologies, and even mythologies by which we organize our affairs and conduct the business of society—what was once called “political economy.” The study of political economy began with Adam Smith and continued on through Marx to the present in the work of scholars such as Yale University political scientist Charles Lindblom. Due to academic specialization and diminished public involvement in politics and community life, the field has declined.
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Marett, B. P. "DOUBLE-DIFFUSIVE INTERFACE BEHAVIOUR: GROWTH AND EROSION IN SOLAR PONDS." In Advances In Solar Energy Technology. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-08-034315-0.50290-1.

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Dixon, Rosalind, and David Landau. "Introduction." In Abusive Constitutional Borrowing. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192893765.003.0001.

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This introduction frames the two trends that are at the core of this book: the triumph of liberal democratic constitutional discourse and the erosion of democracy. Liberal democratic designs, doctrines, and concepts have diffused easily around the world. These norms are promoted by a thick network of actors, and link to other thriving communities such as international human rights. But the rhetorical triumph of liberal democracy has not resulted in a steady increase in democracy—instead, recent years have seen stagnation and backsliding. This seeming paradox is explained by the ease with which liberal democratic ideas can be repurposed to serve anti-democratic ends. Reliance on liberal democratic institutions for anti-democratic moves may conceal their true purpose and make both domestic and international audiences less willing or able to formulate a critique. Furthermore, many liberal democratic norms are double-edged swords that can readily be used to attack rather than protect democracy.
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Gertler, Meric S. "Geography, Learning, and Convergence." In Manufacturing Culture. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780198233824.003.0014.

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According to an increasingly accepted view, the sovereignty of national economies has been eroded to the point where nation-states ‘have become little more than bit actors’ (Ohmae 1995: 12). With the development of globalized financial markets, the rising power of multinational corporations (MNCs), and the emergence of a new set of supranational institutions to govern economic processes on a continental or world scale, nation-states are said to have lost the ability to manage their own domestic economic affairs, having ceded control over exchange rates, investment, and even fiscal policy to extra-national forces (Strange 1997). Moreover, with the increasing leverage and reach of MNCs further contributing to the erosion of national economic sovereignty, the once distinctive character of particular national industrial ‘models’ is said to be under imminent threat. While it may still be possible to identify at least three clearly distinctive national models—an Anglo-American model, a Rhineland (German) model, and a Japanese model—the decline of national institutions, the intensification of competitive forces on a global scale, and the cross-penetration of national markets by MNCs are said to have propelled a process of convergence between these different national models (see Martin and Sunley 1997 for a review of these arguments). In most representations of this globalization dynamic, convergence is regarded as inexorable. One of the most important processes underpinning this dynamic is learning. At the global level, large corporate actors are allegedly learning from each other, so that the most successful corporate practices are emulated and diffused cross-nationally at an increasingly rapid pace. In the late 1980s and early 1990s, considerable attention was devoted to the diffusion of methods of production and workplace organization perfected by Japanese producers of cars and consumer electronics, in which American, Canadian, and European manufacturers were shown to be learning methods such as just-in-time, kaizen/continuous improvement, and other aspects of ‘lean production’ techniques from their Japanese competitors (Womack, Jones, and Roos 1990). With the resurgence of the United States’ economy in the second half of the 1990s, American practices have apparently become the object of global firms’ affections, with large corporations in Europe and Asia adopting the core characteristics of US-style ‘shareholder capitalism’: especially flexible labour market practices, ‘re-engineering’, and the empowerment of shareholders (The Economist 1996a; 1996b).
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Conference papers on the topic "Erosion diffuse"

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Zhukovskii, Rodion, Christophe Chazelas, Vincent Rat, Armelle Vardelle, and Ron Molz. "Predicted Anode Arc Attachment by Local Thermodynamic Equilibrium (LTE) and Two-Temperature Arc Models in a Cascaded-Anode dc Plasma Spray Torch." In ITSC2021, edited by F. Azarmi, X. Chen, J. Cizek, et al. ASM International, 2021. http://dx.doi.org/10.31399/asm.cp.itsc2021p0360.

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Abstract Anode erosion is a common concern in dc plasma spray torches. It depends largely on the heat flux brought by the arc and the dimensions, residence time, and mode of the arc attachment to a given location on the anode wall. This paper compares anode arc attachment modes predicted by LTE (local thermodynamic equilibrium) and 2-T (two-temperature) arc models that include the electrodes in the computational domain. The analysis is based on a commercial cascaded-anode plasma torch operated at high current (500 A) and low gas flow rate (60 NLPM of argon). It shows that the LTE model predict
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Ghenaiet, Adel. "Study of Sand Particle Trajectories and Erosion Into the First Fan Stage of a Turbofan." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22415.

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Ingestion of dust particles by aero-engines or stationary gas turbines is inevitable when operating in extremely polluted environments. The impingements of particles on the surfaces of blades cause erosion damage and permanent losses in engine performance. This paper presents a study of the particle dynamics and erosion in the first stage of a turbofan. The steady flow field through the turbomachinery components was solved separately from the solid phase. The particle trajectories computations used a stochastic Lagrangian tracking code that implements probabilistic modeling for particle size r
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Hattori, Shingo, Naoya Matsubara, Ikuo Shohji, and Hideyuki Kuwahara. "Interfacial Reaction Between Molten Sn and Plasma Nitrided Stainless Steel." In ASME 2013 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ipack2013-73170.

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Erosion behavior of plasma nitrided stainless steel by molten Sn was examined. To investigate the erosion behavior, the interfacial reaction was investigated at the temperature ranging from 350 to 450°C using plasma nitrided SUS304 and SUS316 stainless steel which sandwich pure Sn foil. As the results, it was found that the surface area of the nitrided layer is peeled and subsequently FeSn2 phases form in the reaction interface. FeSn2 phases grow toward molten Sn and Sn diffuses into the nitrided layer. Moreover, Ni3Sn4 phases form and grow in molten Sn. Apparent activation energies of the Sn
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Yagi, Yoshinori, Michio Murase, Keiichi Sato, and Shuji Hattori. "Mechanism of Cavitation Erosion at the Exit of a Long Orifice." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45004.

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We carried out experiments to clarify the mechanism of cavitation erosion at the exit of a long orifice equipped at a pressure-reducing line in a pressurized water reactor (PWR). In order to ascertain the mechanism of cavitation erosion at the first stage and progression stage, we used a high-speed video camera. As a result, we observed cavity collapse near the exit of the orifice under oscillating flow conditions, which might be a major factor in the first stage of erosion at the exit of the orifice. To simulate the progression stage, we used an orifice with a cone-shaped flow passage at its
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Minton, David A., Caleb I. Fassett, Masatoshi Hirabayashi, Bryan A. Howl, and James E. Richardson. "TOPOGRAPHIC DEGRADATION BY IMPACT CRATERING ON AIRLESS BODIES IS DOMINATED BY DIFFUSIVE EROSION FROM DISTAL EJECTA." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-306243.

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Bleeks, Thomas W., and Frank Brindisi. "The Properties and Characteristics of Electroless Nickel Coatings Applied to Gas Turbine Engine Components." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-4.

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The improvement of reliability and reduction of overhaul time is of paramount importance to engineers involved with coatings used on gas turbine engine components. Aluminum/phosphate/chromate coatings are currently used in industrial and aircraft gas turbine engines for coating compressor components. Traditional electrolytic nickel with diffused cadmium coatings are also used but to a lesser extent. Field experience, however, has shown limitations with both coating systems, particularly in the areas of erosion, wear, and simplicity in component processability. Currently, several new electroles
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Palmer, D. L., and W. F. Waterman. "Design and Development of an Advanced Two-Stage Centrifugal Compressor." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-202.

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This paper describes the aero-mechanical design and development of a 3.3 kg/sec (7.3 lb/sec), 14:1 pressure ratio two-stage centrifugal compressor which is used in the T800-LHT-800 helicopter engine. The design employs highly nonradial, splitter bladed impellers with swept leading edges and compact vaned diffusers to achieve high performance in a small and robust configuration. The development effort quantified the effects of impeller diffusion and passive inducer shroud bleed on surge margin as well as the effects of impeller loading on tip clearance sensitivity and the impact of sand erosion
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Panaiotti, Sergey S., Upendra Singh Rohatgi, Sergey F. Timuchev, Vladimir A. Soldatov, and Boris N. Chumachenko. "CFD Study of Prospective 1st Stage Centrifugal Impeller Design." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37406.

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CFD analysis of two first-stage centrifugal impellers is undertaken with the main goal to obtain additional evaluation data regarding flow characteristics of the old first stage impeller design and in the proposed new cantilever impeller design. The new design is developed to reduce the 1st stage impeller cavitation erosion damage of a multistage centrifugal feed pump. This stage of work comprises computational tests of both impeller models under the same mode of operation, 3000 RPM and volumetric flow rate 0.0503 m3/s. Both impellers are planning to be tested experimentally. The inlet geometr
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Hoznedl, Michal, Ladislav Tajč, Lukáš Bednář, Aleš Macálka, and Antonín Živný. "Separation of Water Film From Last Stage Guide Blades of 1000 MW Steam Turbine." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90221.

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Abstract The paper deals with experimental research of water and steam flow through the grooves in hollow stator blades of the steam turbine last stages with the support of CFD calculations. Also the amount of water sucked by the circumferential groove in the upper limiting wall between the last stage rotor and stator blade was experimentally measured. Measuring took place on a steam turbine with nominal output 1000 MW. With gradual increase of the turbine output it was possible to measure parameters of hollow blades suction for outputs 205, 460, 730, 870 and also 1006 MW. Before starting turb
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Ferrara, Veronica, and Lars E. Bakken. "Wet Gas Compressor Surge Stability." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42650.

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The new wet gas compression technology provides a big potential for improved recovery from new and depleting gas/condensate fields. The current technology is based on centrifugal and axial compressor principles, which offers both the benefits of well-known concept design and the drawbacks of erosion, fouling, surge and instabilities. These concepts are based mainly on the design of a traditional compressor. This partly reflects performance requirements for handling pure gas and partly the lack of a fundamental understanding of wet gas behaviour through an impeller stage. Process and operating
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Reports on the topic "Erosion diffuse"

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Scholz, Florian. Sedimentary fluxes of trace metals, radioisotopes and greenhouse gases in the southwestern Baltic Sea Cruise No. AL543, 23.08.2020 – 28.08.2020, Kiel – Kiel - SEDITRACE. GEOMAR Helmholtz Centre for Ocean Research Kiel, 2020. http://dx.doi.org/10.3289/cr_al543.

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R/V Alkor Cruise AL543 was planned as a six-day cruise with a program of water column and sediment sampling in Kiel Bight and the western Baltic Sea. Due to restrictions related to the Covid-19 pandemic, the original plan had to be changed and the cruise was realized as six oneday cruises with sampling in Kiel Bight exclusively. The first day was dedicated to water column and sediment sampling for radionuclide analyses at Boknis Eck and Mittelgrund in Eckernförde Bay. On the remaining five days, water column, bottom water, sediment and pore water samples were collected at eleven stations cover
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