Friday, June 15, 2012

Wood


Wood

Mstrdobh porous organic material (ie, absorbs moisture and keeps it)
Viable form (taken in different situations to grow in response to external stimuli)
And would come from woody plants, especially trees and shrubs and wood

Source of timber trees wood is any wood Nbatiaola that the origin of all plants are wooden, but must have certain qualities in the wood and plant these qualities are:
● You must be the vascular plants contain any tissue connecting a wood and bark Jnnh to happen to him and then be mature wood.
● You must be the oldest person living any number of years up to hundreds or thousands of years.
● You must have a leg continues year after year and called on the wooden leg Steam, Trunk, Bole.
● should happen by the aggravation of Secondary Secondary thickness through layer Alkanyum and thus increasing the diameter timber trees in the fish and become a wizard for the extraction of wood Lumber factory


* Source of wood is a natural forest
But the fear of extinction of natural forests due to logging for timber
Of the utmost importance for the continuation of life on Earth and because it is the plant's natural oxygen
Being in the country exporting of timber in the world forestry
For commercial purposes in order to get wood
Seedlings are grown on trees instead of large trees that are cut off as farming fast-growing timber trees of good quality



Three types of woody plants is
Trees Trees / Shrubs Shrubs / Almtzlqat wooden Woody Lianas

Tree:
Wooden plant height of up at puberty Maturity 20 feet at least has a leg-based drink is free and is characterized by Bnmoh
Of the branches for several feet above the ground and holds the crown distinctive.

Shrub:
A wooden plant does not exceed a height of 20 feet and Shrub usually have more than one drink a leg may be
Shrub or list Mfterhh eg ascites Muftrhh shrubs Gaultheria.

Wooden climbing: a climber plants or roots Bamahaliq air or turn around and this is one of the advantages of Almtzlqat
Tropical forests.

There is an ancient relationship between humans and material

Historians disagree on the very beginnings for the timber industry but fossils dating
Of the stick as a tool in his movements accompanied the man to fish and to carry his food and Zoadh as well as to defend himself and Alaatkaz in his old age and illness
But the importance of wood did not explicitly take shape only after the emergence of the need for a place to spend the rights.
 
Some information about him /

● for wood durability of this large and it is used in the construction because of the different forces to bear the pressure and tensile
● It is a material that does not corrode with the passage of time even while he was with water, but is subject to rot
● has a special structure different from the rest of the shapes the material to prevent
● Do not change its dimensions, but the impact of moisture it (swelling and shrinkage) and different temperatures have no effect, that because of the wood structure particularly vulnerable to heat
     the importance of his character in the aesthetic gain is very beautifu

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