Environmental Degradation and Energy Source Definitions
Desertification
An ecological degradation process whereby productive land loses part or all of its production potential, leading to the appearance of desert conditions. This process results from the combination of climatic factors and human activities.
Erosion
A natural process involving the wearing away of the land’s surface by external geological agents (such as runoff, glacial ice, wind). It can be intensified by human activities, leading to serious consequences.
Erodibility
The susceptibility of
Read MoreCytology Sample Collection, Processing, Staining
Cytology and Sample Processing
Hematoxylin Staining Process
Hematoxylin (Htx) is a colorant used to be oxidized to Hematein (chromogen = benzene + chromophore groups). This process can occur spontaneously through contact with atmospheric oxygen or through the use of oxidants (e.g., mercuric oxide, potassium dichromate). Oxidation causes the appearance of an aniline molecule which acts as a chromophore and has the property to stain. The oxidation of Hematoxylin is called maturation. To the Hematein
Read MoreKey Environmental and Landscape Terms
Soil Horizon
Each of the layers or strata that form soil. All these layers together form the soil profile. Depending on their distribution, soils are classified into different types, such as those with poorly differentiated profiles or those that are deteriorated or deteriorating.
Leaching
The dissolution and flushing of soluble elements from the upper horizon of soil by water.
Humus
Composted organic matter found in the topsoil, resulting from the decomposition of plant and animal material mixed with
Read MoreCrude Oil: From Formation to Products
What is Crude Oil?
Crude oil is a viscous black liquid, collected at great depths within sedimentary rocks. The term ‘petroleum’ means ‘rock oil’. It is a complex mixture of liquid hydrocarbons and contains dissolved solid and gaseous hydrocarbons, along with oxygen, nitrogen, and sulfur compounds. Its appearance varies from a less dense liquid to a thick, tarry substance.
Understanding Hydrocarbons
Hydrocarbons are organic compounds containing hydrogen and carbon. They are classified into series such
Read MoreBulldozer, Angledozer, Ripper, Loader Explained
What is a Bulldozer?
A bulldozer is a powerful pusher machine, typically equipped with a front push blade that can be raised or lowered by a hydraulic control system. It normally excavates and transports material to the unloading site while rotating. It shapes both cuts and embankments in the same operation.
Bulldozer Primary Uses
The most prominent use and economic application of a bulldozer is dragging and transporting material along the direction of travel (maximum 60 or 70 meters), according to
Read MoreFlood Dynamics: Hazards, Risks, and Prevention
Understanding Flood Risks and Causes
Floods are a destructive geological phenomenon within the geosphere. Their causes can be geological, climatic, and anthropogenic, originating from events like hurricanes, heavy rainfall leading to river overflow, channel obstructions, and more.
Types of Flood Events
Flooding in continental watercourses (avenidas) can be categorized into two main types:
Torrential Floods
These originate in streams or dry riverbeds carved by water on steep slopes. Water flows sporadically
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