adduction

Adduction is a term that comes from the Latin word adduct. The first meaning mentioned in the dictionary of Royal Spanish Academy (RAE) refers to act of adducing. This verb, for its part, refers to show proof or justification.

The concept It is also used to name the movement which consists of bringing a limb or other body part to the middle plane which, in an imaginary way, divides the body into two symmetrical halves. If a person has their arms extended horizontally at shoulder height, shaping a letter T, and then lowers them so that their hands are at waist level, they have performed an adduction movement.

The movement contrary to adduction is the abduction. In this case, the subject separates the extremities of the plane of symmetry, exerting a action crosswise. This happens if the arms that are located next to the body are raised.

The eyes owe their movement to a set of muscles known as extraocular. When we relax our gaze so that our eyes point straight ahead, without looking at any particular point, we adopt the position called primary. Rotation about the horizontal axis upward is known as elevation, while the inverse is the depression (look up and down, respectively). In this case, we speak of adduction to define the movement of an eye towards the central axis of the body, in a similar way to the adduction of the arms described above; on the contrary, the abduction consists of moving one eye outward.

On countries What Venezuela, Ecuador Y Bolivia, the idea of ​​adduction is used as a synonym for driving (in the sense of a series of conduits that allow the transport of fluids). For example: "The municipal authorities announced that, in the coming weeks, they will begin maintenance works on the San Mateo adduction", "According to what was promised by the governor, an adduction that will go from the dam to Nuestra Señora del Rosario will bring drinking water to the town", "The young man, who was driving at high speed, lost control of his motorcycle and when he fell he hit the adduction".

Water collection and adduction

Throughout history, humans have required a supply of Water That would allow him to adequately water his plantations and the various sanitation tasks in his settlements, as well as consume it to feed himself and maintain his own personal hygiene. We must not forget that all individuals on this planet need water to survive, since it is an essential part of it; In the case of our species, it is a factor that limits our subsistence, and many suffer it because of the great imbalance that exists between rich and poor.

One of the most significant creations to guarantee the catering of water is known by the name of catchment or harvest, an essential technology for many people to access this precious resource. The catchment is collecting and storing water that it comes from various sources, with the aim of taking advantage of its use; Through this procedure, the water is taken from the basin and directed to reserve ponds to significantly increase the supply.

The term adduction, in this context, is defined as the act of driving or transporting water from the source of the catchment, in this case the basin, to the treatment plant, the network or the regulation tank. The means that exist to carry out said transfer are tunnels, channels and pipes, and one or the other is chosen according to the particular characteristics of each installation, the volume of water to be transported and the available budget, among other factors.