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  • Erosion
    Erosion

    Erosion changes Earth's natural features. It breaks down materials and can help make something new.Discover why erosion is an important part of nature!

    Price: 13.99 £ | Shipping*: 3.99 £
  • COASTAL EROSION
    COASTAL EROSION


    Price: 7.97 £ | Shipping*: 3.99 £
  • Erosion and Sinkholes
    Erosion and Sinkholes

    Why do cliffs collapse How do whole streets disappear into the ground How slowly do glaciers move What are the Moeraki Boulders and where did they come from Erosion and Sinkhole reveals the fascinating facts and the answers to these and many other questions.|Why do cliffs collapse How do whole streets disappear into the ground How slowly do glaciers move What are the Moeraki Boulders and where did they come from Erosion and Sinkhole reveals the fascinating facts and the answers to these and many other questions.

    Price: 13.99 £ | Shipping*: 3.99 £
  • Constitutional Erosion in Brazil
    Constitutional Erosion in Brazil

    This book provides a fascinating analysis of a single jurisdiction, Brazil, and accounts for both the successes and the failures of its most recent constitutional project, inaugurated by the Constitution of 1988. It sets out the following aspects of the constitutional development and erosion:- the different phases of the promised transition from military rule to a ‘social-democratic constitutionalism’; - the obstacles to democratisation derived from the absence of true institutional reforms in the judicial branch and in the civil-military relationship; - the legal and social practices which maintained a structure that obstructed the emergence of an effective social-democracy, such as the neoliberal pattern, the acceptance in the political field of unlawful organisations, such as the milícias, and the way the digital revolution has been harming the formation of democratic sovereignty.Situating Brazil in the global context of the revival of authoritarianism, it details the factors which are common to the third wave of democratisation reflux.Accounting for those aspects, particular to the Brazilian jurisdiction, it shows that there is a tension in the Brazilian constitution. On the one hand, such constitutionalism was renewed by democratic pressure on governments to undertake social politics since 1988.On the other hand, it retained authoritarian practices through the hands of diverse institutions and political actors. By exploring the ideas of constitutional erosion and collapse, as well as democratic, social and digital constitutionalism, the book presents a comparative analysis of Brazil and other jurisdictions, including the United States, South Africa, and Peru.

    Price: 32.99 £ | Shipping*: 0.00 £
  • What is dental enamel erosion?

    Dental enamel erosion is the gradual wearing away of the hard outer layer of the teeth, known as enamel. This erosion can be caused by a variety of factors, including acidic foods and drinks, certain medications, and conditions such as acid reflux. Over time, enamel erosion can lead to tooth sensitivity, discoloration, and an increased risk of tooth decay. It is important to take steps to prevent enamel erosion, such as avoiding acidic foods and drinks, practicing good oral hygiene, and seeking treatment for conditions that may contribute to erosion.

  • What is erosion in geography?

    Erosion in geography refers to the process of wearing away and removal of soil, rock, or other materials from the Earth's surface by natural forces such as water, wind, and ice. This process can be caused by factors such as rainfall, wind, waves, and glacial movement. Erosion plays a significant role in shaping the Earth's surface over time, creating features such as valleys, canyons, and coastlines. It can also lead to the loss of fertile soil and the degradation of landscapes, making it an important consideration in environmental and land management.

  • What is erosion and accumulation?

    Erosion is the process by which soil and rock are gradually worn away by natural forces such as water, wind, and ice. This can occur over long periods of time and can result in the formation of valleys, canyons, and other landforms. Accumulation, on the other hand, is the process by which eroded material is deposited in a new location, often leading to the formation of sedimentary layers or new landforms such as deltas and alluvial fans. Both erosion and accumulation are important natural processes that shape the Earth's surface over time.

  • What is erosion in a river?

    Erosion in a river is the process by which the river wears away the land and rock along its banks and bed. This can happen through the force of the flowing water, which carries sediment and debris that can scrape and carve away at the riverbanks and riverbed. Erosion in a river can also be caused by the abrasive action of rocks and pebbles being carried by the water, as well as by the chemical breakdown of the rock and soil along the river's path. Over time, erosion can change the shape of the river channel and landscape, creating features such as river cliffs, meanders, and river deltas.

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  • Scour Manual : Current-Related Erosion
    Scour Manual : Current-Related Erosion

    Ever since the publication in 1997 the original Scour Manual has helped many practising hydraulic engineers to deal with scour processes near hydraulic structures.In recent years new insights, such as probabilistic calculations, offered new opportunities to design structures more economically.These new insights are included in this update of the original Scour Manual, which is focussing entirely on current-related scour.This manual provides the engineer with useful practical methods to calculate the dimensions of scour holes in the pre-feasibility and preliminary stages of a project, and gives an introduction to the most relevant literature.This updated Scour Manual contains guidelines that can be used to solve problems related to scour in engineering practice and also reflects the main results of all research projects in the Netherlands in recent decades.The so-called Breusers equilibrium method has a central role, which can basically be applied to all situations where local scour is expected.The method allows to predict the scour depth as a function of time, provided that the available knowledge about scour at the specific structure is sufficient.For structures with insufficient knowledge available, alternative scour prediction rules are presented.The treatment of local scour is classified according to the different types of structures.Each type of structure is necessarily schematised to a simple, basic layout.The main parameters of a structure and the main parts of the flow pattern near a structure are described briefly insofar they are relevant to the description of scour phenomena.New scour formulas for the equilibrium scour have been elucidated.Evaluating a balance of forces for a control volume, it is possible to develop scour equations for different types of flow fields and structures, i.e. jets, abutments and bridge piers. As many scour problems are still not fully understood, attention is paid to the validity ranges and limitations of the formulas, as well as to the accuracy of the scour predictions.This information can also be used to carry out a risk assessment using a safety philosophy based on a probabilistic analysis or an approach with a safety factor.Moreover, the information on the strength of soils is extended and aspects are addressed such as scour due to shear failures or flow slides, that can progressively damage the bed protection which might lead to the failure of hydraulic structures. This updated Scour Manual presents scour prediction methods and deals with practically related scour problems.Consultants and contractors were invited to provide case studies of realized projects, including the methods that were followed.These case studies will help with grasping the concept of scour by the flow of water.This manual provides the engineer with the latest knowledge and with case studies that show how to apply the formulas and their limitations.

    Price: 49.99 £ | Shipping*: 0.00 £
  • Geology Rocks!: Weathering and Erosion
    Geology Rocks!: Weathering and Erosion

    Explore the building blocks of our planet with fun jokes, cartoons and hands-on activities. Find out how weathering breaks rock and erosion carries away the pieces, carving our planet's surface into jagged peaks and deep valleys.Learn about fantastic features from caves and arches to beaches and dunes. This book is part of the Geology Rocks series. This collection of books examines the Earth's make up, from the different types of rock it is made from to discovering the structure of the planet itself and how tectonic plates relate to earthquakes and volcanoes.PErfect for readers aged 7 and up.

    Price: 12.99 £ | Shipping*: 3.99 £
  • Dirt : The Erosion of Civilizations
    Dirt : The Erosion of Civilizations

    Dirt, soil, call it what you want - it's everywhere we go.It is the root of our existence, supporting our feet, our farms, and our cities.This fascinating yet disquieting book finds, however, that we are running out of dirt, and it's no laughing matter.An engaging natural and cultural history of soil that sweeps from ancient civilizations to modern times, "Dirt: The Erosion of Civilizations" explores the compelling idea that we are - and have long been - using up Earth's soil.Once bare of protective vegetation and exposed to wind and rain, cultivated soils erode bit by bit, slowly enough to be ignored in a single lifetime but fast enough over centuries to limit the lifespan of civilizations.A rich mix of history, archaeology and geology, "Dirt" traces the role of soil use and abuse in the history of Mesopotamia, Ancient Greece, the Roman Empire, China, European colonialism, Central America, and the American push westward.We see how soil has shaped us and we have shaped soil - as society after society has risen, prospered, and plowed through a natural endowment of fertile dirt.David R. Montgomery sees in the recent rise of organic and no-till farming the hope for a new agricultural revolution that might help us avoid the fate of previous civilizations.

    Price: 21.00 £ | Shipping*: 3.99 £
  • Hoodie Lyle & Scott Erosion Print
    Hoodie Lyle & Scott Erosion Print

    sweat Inspired by the weather-beaten patterns found on the weathered rocks of Britain's endless shores, the Lyle & Scott Erosion Print hoodie takes a classic silhouette and reinvents it with this distinctive print. Made from 100% cotton and very versatile, it features a drawstring hood, kangaroo pocket, ribbed cuffs and hem, and our signature Golden Eagle.

    Price: 57.34 £ | Shipping*: 0.00 £
  • What is retrogressive erosion or retrogressive deposition?

    Retrogressive erosion is the process by which a river or stream cuts backward into the landscape, causing the erosion of the land and the formation of steep-sided valleys or gullies. This can occur due to changes in the river's flow or the underlying geology of the area. Retrogressive deposition, on the other hand, is the process by which sediment is deposited in a backward or upstream direction, often due to a decrease in the river's flow or changes in the sediment load. Both processes can significantly alter the landscape and contribute to the shaping of the Earth's surface over time.

  • What is the white layer in erosion?

    The white layer in erosion is often a result of the leaching of minerals from the soil. This process occurs when water moves through the soil, carrying away minerals and leaving behind a white, chalky layer. This layer can indicate that the soil is being depleted of essential nutrients, which can impact plant growth and the overall health of the ecosystem. Additionally, the white layer can also be a sign of soil compaction, which can further exacerbate erosion.

  • What is a corneal erosion in the eye?

    A corneal erosion is a condition where the outer layer of the cornea, called the epithelium, is damaged or lost. This can lead to symptoms such as pain, sensitivity to light, and blurred vision. Corneal erosions can be caused by a variety of factors, including dry eyes, trauma, or underlying eye conditions. Treatment typically involves lubricating eye drops, antibiotics to prevent infection, and sometimes a bandage contact lens to protect the cornea as it heals.

  • What is the difference between abrasion and erosion?

    Abrasion is the process of wearing down or rubbing away of a material by friction, typically caused by the movement of one material against another. This can result in the smoothing or polishing of the surface. Erosion, on the other hand, is the process of the gradual wearing away of a material by natural forces such as water, wind, or ice. This can result in the removal and transportation of the material to another location. In summary, abrasion is the physical wearing down of a material by friction, while erosion is the gradual removal and transportation of material by natural forces.

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