domingo, 27 de marzo de 2011

UNIDAD 2: ESTRUCTURA DE LA ORACIÓN

Reverse Osmosis System

A Reverse Osmosis System is also called RO system, or hyperfiltration system. It works by using water pressure to force water molecules through a fine membrane filter that leaves the dirt particles behind. The water gets purified and it is then collected from the clean membrane side.

The membrane used for the purification is very easy for the water to pass through because of its molecular structure. The water that contains the contaminants is simply flushed down the drain and eliminated. This is a way to treat water that is full of contaminants and filter it to get pure drinkable water.
The water system converts the tap water into drinking water that is pure and safe to consume. It eliminates 98% of dissolved solids, minerals, metals and various harmful chemicals that are bad for the body. One of the main uses of the reverse osmosis system is for industrial use, particularly film processing and printing. This process removes the minerals from the water, which is afteral what the film processing needs. So in any way you would need salt removed from the sea water, this system is the way to go forward with.

When you are looking to buy such a system to utilize for your home, you need to be aware of certain facts. Once you use the system, you also need to add chlorine to the water to make it really pure. This is because some chemicals that are harmful for us still pass through even with the reverse osmosys system, such as pesticides or herbicides, and cholorine is the only one that can safely remove them. You need to take into account where you live, the type of water you already have available and what reasons you have in order to use the water. Many homes have a reverse osmosis water system installed, as this is a very common way to purify water in the homes and appartments. This allows people to use water without concern for drinking, cooking and showering.

Idea principal del texto

El texto habla de la osmosis inversa, para que sirve y de que manera puede ser utilizada. La osmosis inversa es un sistema de purificación de agua muy facil, debido a que este proceso elimina los contaminantes para convertirla en agua apta para el cosumo.

Oraciones seleccionadas

The water that contains the contaminants is simply flushed down the drain and eliminated.
FN: The water that contains the contaminants
NFV: water
Pre modificador: The
Post modificador: that contains the contaminants
FV: is simply flushed down the drain and eliminated
NFV: is
Tiempo verbal: Presente simple

One of the main uses of the reverse osmosis system is for industrial use, particularly film processing and printing.
FN: One of the main uses of the reverse osmosis system
NFV: reverse osmosis system
Pre modificador: one of the main uses of the
FV: is for industrial use, particularly film processing and printing.
NFV: is
Tiempo verbal: Presente simple

This process removes the minerals from the water, which is afteral what the film processing needs.
FN: This process
NFV: process
Pre modificador: this
FV: removes the minerals from the water, which is afteral what the film processing needs.
NFV: removes
Tiempo verbal: Presente simple

Elementos referenciales

*Pronombres demostrativos: this, that
*Conectores: and
*Which, where, when

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