lunes, 2 de febrero de 2009

DARWIN


Charles Robert Darwin FRS (12 February 1809 – 19 April 1882) was an English naturalist[I] who realised and demonstrated that all species of life have evolved over time from common ancestors through the process he called natural selection. The fact that evolution occurs became accepted by the scientific community and much of the general public in his lifetime, while his theory of natural selection came to be widely seen as the primary explanation of the process of evolution in the 1930s, and now forms the basis of modern evolutionary theory. In modified form, Darwin’s scientific discovery remains the foundation of biology, as it provides a unifying logical explanation for the diversity of life.
At Edinburgh University Darwin neglected medical studies to investigate marine invertebrates, then the University of Cambridge encouraged a passion for natural science. His five-year voyage on HMS Beagle established him as an eminent geologist whose observations and theories supported Charles Lyell’s uniformitarian ideas, and publication of his journal of the voyage made him famous as a popular author. Puzzled by the geographical distribution of wildlife and fossils he collected on the voyage, Darwin investigated the transmutation of species and conceived his theory of natural selection in 1838. Although he discussed his ideas with several naturalists, he needed time for extensive research and his geological work had priority. He was writing up his theory in 1858 when Alfred Russel Wallace sent him an essay which described the same idea, prompting immediate joint publication of both of their theories.

lunes, 26 de enero de 2009

Wind power




Airflows can be used to run wind turbines. Modern wind turbines range from around 600 kW to 5 MW of rated power, although turbines with rated output of 1.5–3 MW have become the most common for commercial use; the power output of a turbine is a function of the cube of the wind speed, so as wind speed increases, power output increases dramatically. Areas where winds are stronger and more constant, such as offshore and high altitude sites, are preferred locations for wind farms.
Since wind speed is not constant, a wind farm's annual energy production is never as much as the sum of the generator nameplate ratings multiplied by the total hours in a year. The ratio of actual productivity in a year to this theoretical maximum is called the capacity factor. Typical capacity factors are 20-40%, with values at the upper end of the range in particularly favourable sites. For example, a 1 megawatt turbine with a capacity factor of 35% will not produce 8,760 megawatt-hours in a year, but only 0.35x24x365 = 3,066 MWh, averaging to 0.35 MW. Online data is available for some locations and the capacity factor can be calculated from the yearly output
Globally, the long-term technical potential of wind energy is believed to be five times total current global energy production, or 40 times current electricity demand. This could require large amounts of land to be used for wind turbines, particularly in areas of higher wind resources. Offshore resources experience mean wind speeds of ~90% greater than that of land, so offshore resources could contribute substantially more energy. This number could also increase with higher altitude ground-based or airborne wind turbines.
Wind power is renewable and produces no greenhouse gases during operation, such as carbon dioxide and methane.

domingo, 25 de enero de 2009

Pliers


Pliers are an instrument that convert a power grip—the curling of the fingers into the palm of the hand—into a precision grip, directing the power of the hand's grip in a precise fashion on to the objects to be gripped. The handles are long relative to the shorter nose of the pliers. The two arms thus act as first class levers with a mechanical advantage, increasing the force applied by the hand's grip and concentrating it on the work piece.

lunes, 17 de noviembre de 2008

friends of true



We have fights and problems but they


are the best friends of the world ..



Maria, Nuria, Carla, Andrea, Lidia, Lucia, Silvia, Nur, Sandra



I love you

jueves, 13 de noviembre de 2008

Love


Eliminar formato de la selecciónIf, I have jealousy of
you I have jealousy of you
Because I want to you
If, I have jealousy of
you I have jealousy of you
Because I want to you
To deny it to the serious world,
to deny that I have a heart.
If, I have jealousy of you,
I I have jealousy of you,
so that I want to you.
Love, when your you feel love,
sides, pink color the colors,
Will be honey in all the flavors,
and love, in everything what is love.
Love, is the miracle of the life
The only one magnifies emotion.
Love, is what I in the soul feel,
and anxiety flood my heart.
Love, I rub to you on…
apiádate of my.
Dame your love.
Love is the miracle of the life,
the only one magnifies emotion,
love, it is what I in the soul feel,
and anxiety flood, my heart.
Love, I rub to you on one…
apiádate of my.
Dame your love, dame your love,
damelo thus, and now I you give it,
you do not see that I want to you, heart?
Dame your love…

lunes, 27 de octubre de 2008

She's the kinda girl that you see in the movies
seen her in my dreams and now she's standing
next to me
down by the shore first weekend of the summer
got to take a chance and just ask for her number
i wish i had a song on MTV
Cause in a croweded room i'd be the only one she'd see
She's looking bored now i'm running out of time
I've only got 6 minutes if i'm gonna make her mine
one minute and the earth begins to shake
two minutes and my heart begins to break
andother minute and she makes me feel brand new
That's just three minutes with you
Four minutes and she's everything i i see
five minutes and she'swhere i want to be
another minute everyting just feels so new
i need six minutes with you
six minutes
she's looking at her watch while the DJ is spinning
this could be the end or it's just the beginning
She's the kinda girl that i want to know better
Reaching for her keys so i guess it's now or never
i whish that i wason the radio
i'd sing her favorite song, she'd be front row at
every show
the party's lame and now i'm running out of time
i've only got 6 minutes if i'm gonna maker her mine
one minute and the earth begins to shake
two minutes and my heart begins to break
andother minute and she makes me feel brand new
That's just three minutes with you
Four minutes and she's everything i i see
five minutes and she'swhere i want to be
another minute everyting just feels so new
i need six minutes with you
six minutes
Sometimes i feel like the catcher in the Rye
sometimes i wish that i could catch your eye
soemtimes i wish that i could be that guy
Yea! time is passing by
I'm losing my mind
i need one, two, three, four, five, six minutes with you
one minute and the earth begins to shake
two minutes and my heart begins to break
andother minute and she makes me feel brand new
That's just three minutes with you
Four minutes and she's everything i i see
five minutes and she'swhere i want to be
another minute everyting just feels so new
i need six minutes with you
six minutes

lunes, 20 de octubre de 2008

Todavia yo siento tus caricias y tu respiración sobre mi piel
no hay quien me haga olvidar tu sonrisa
y sigo amándote hoy más que ayer.
soñando con volverte a ver.
cada día que pasa
mas me mata tu ausencia y pierdo la fe
Quisiera poder olvidarme de ti
con otra sacarte por siempre de mí
decirte a la cara que no me haces falta para poder vivir.
quisiera borrarte de mi corazón
quitar de mi boca tu dulce sabor
no echarte de menos al llegar la noche
y sin reproches resignarme a tu adiós
mas cuando creo que ya te he olvidado descubro que aun te amo.
Se que soy culpable de mi suerte
y que mi sufrimiento no te hará volver en mi otra vez creer
te hice llorar y me arrepiento,
amor cuanto lo siento
si no te vuelvo a ver
no sobreviviré.
Cada día que pasa
más me mata tu ausencia y pierdo la fe
Quisiera poder olvidarme de ti
con otra sacarte por siempre de mí
decirte a la cara que no me haces falta para poder vivir.
quisiera borrarte de mi corazón
quitar de mi boca tu dulce sabor
no echarte de menos al llegar la noche
y sin reproche
resignarme a tu adiós.
pero es que aun te amo.
Quisiera poder olvidarme de ti
con otra sacarte por siempre de mí
decirte a la cara que no me haces falta para poder vivir.
quisiera borrarte de mi corazón
quitar de mi boca tu dulce sabor
no echarte de menos al llegar la noche
y sin reproche
resignarme a tu adiós.