Tuesday, 8 May 2012


In half of the twentieth century, Darwin (1809-1882) was criticized and ridicule from society because their revolutionary ideas published in his book "The Origin of Species." Although the 1 st edition (1859) was very popular, the society of the time did not give too much attention. Thanks to this work definitively established the theory of evolution. Darwin's work surpasses all previous publications on the evolution and 
The appearance of "The Origin of Species" was a scientific and cultural event, which caused a great scandal. There were many magazines and newspapers that published reviews and parodies of this work. Biologists were divided into two areas: Darwin's supporters and people who were against innovation. The English church was a great enemy of Darwin. The inclusion of man in his theory did Darwin come into conflict with conservative ideas and religion. Natural selection denied God, while the common image of the species was contradictory to the biblical account. At the time, Darwin's scientific arguments were of little weight was not until years later mucos when he began to recognize the importance of their discovery.
Darwin's work is twofold. On the one hand, the collection of a large number of paleontological and biological data from which it introduces the idea of evolution. On the other hand, the formulation of the theory of natural selection to explain the evolutionary process. The idea of evolution was accepted by biologists almost immediately, but the theory of natural selection was discussed from the beginning.
Thanks to Darwin, "The Origin of Species" caused a great revolution in biology.


Thursday, 3 May 2012

This river located in the northwest of the Iberian Peninsula, which practically runs through the region of Galicia, but in its final stretch forms the border between Spain and Portugal before flowing into the Atlantic Ocean. It is the longest river in Galicia, and the largest river after the river Sil receives its main tributary. It has a length of 310 km and drains a large basin of 12 486 km. 
Born in the Pedregal de Irimia, Lugo. The Minho flows through the Massif Galician andCantabrian Mountain range and the mountains of Leon, two of the rainiest areas of the Iberian Peninsula, one of the main rivers of the Atlantic. All its upper course has been declared a Biosphere Reserve. in his last 76 km of border between Spain and Portugal,and empties into the Atlantic Ocean forming an estuary between La Guardia (Pontevedra) and Caminha.
Its main tributaries are the rivers Sil, Neira, Avia, Barbantiño, Búbal, Arnoya.
Throughout the course of the river are fish such as trout and eel, and mammals such as the Iberian muskrat and otter.
In the upper vegetation is made ​​up of alluvial forests of alder and ash, oak and Atlanticwet winches.

Andrea

Tuesday, 1 May 2012

AUTISM




Autism is a disorder of neural development characterized by impaired social interaction and communication, and by restricted and repetitive behavior it affects information processing in the brain. The diagnostic criteria require that symptoms become apparent before a child is three years old.

Parents usually notice signs in the first two years of their child's life. The signs usually develop gradually, but some autistic children first develop more normally and then regress. Although there is no known cure, there have been reported cases of children who recovered.

The effects, in general,  they are the incapacity of the social interaction, the isolation and the stereotypes(movements outcontrol of any extremity, the most generally are the hands).

We estimated that the autismo affect to 4 every 10.000 people, depending of the criterion of the diagnosis using. Believes that the incidence raise, but isn’t downright if is for a real raise of the causes or Only a high Lumber of diagnostics. The autismo affect four rise more to the men than to the woman.


CARLA AND RAQUEL

Wednesday, 25 April 2012

Carpal tunnel syndrome (By Alex and Marquitos)

Carpal tunnel syndrome (CTS), is a dissease of the nervous system , the nerves are not conected in the right form or there are a problem in the axons, it can produce a lot a sympthoms. 
And it is one of the most common laboral disseases.



Carpal tunnel syndrome occurs when the median nerve, which go from the forearm into the palm of the hand, becomes pressed or squeezed at the wrist. The median nerve controls sensations to the palm side of the thumb and fingers (although not the little finger), as well as impulses to some small muscles in the hand that allow the fingers and thumb to move. The carpal tunnel - a narrow, rigid passageway of ligament and bones at the base of the hand - houses the median nerve and tendons. Sometimes, thickening from irritated tendons or other swelling narrows the tunnel and causes the median nerve to be compressed. The result may be pain, weakness, or numbness in the hand and wrist, radiating up the arm.




Carpal tunnel syndrome is common in people who perform repetitive hand and wrist. Typing on a computer keyboard is probably the most common cause of this syndrome. Other causes include:

    
    
    



     * Sew
     * Driving
     * Work on an assembly line
     * Paint
     * Write
     * Use tools (especially hand tools or tools that vibrate)
     * Sports such as racquetball and handball
     * Playing musical instruments

The condition often occurs in people 30 to 60 years and is more common in women than in men.

Many health problems are associated with carpal tunnel syndrome, including:

     * Bone fractures and arthritis of the wrist
     * Acromegaly
     * Diabetes
     * Alcoholism
     * Hypothyroidism
     * Renal and Dialysis
     * Menopause, premenstrual syndrome (PMS) and pregnancy
     * Infections
     * Obesity
     * Rheumatoid arthritis, lupus erythematosus (SLE) and scleroderma

Monday, 23 April 2012

DNA

Until recently, studies of paternity by “DNA analysis” were the subject of fiction. Its high cost and scarcity of specialized laboratories restricted the use of DNA testing to situations of extreme need, as police cases, or medical research. For legal and family issues, commissioning a biological analysis of paternity was extremely costly in time and money.

Determination of paternity

DNA tests to determine paternity is made by comparing the DNA sequence of the parent, child and mother. The combination of the DNA sequences of the father and mother should result in the sequence of the boy / girl, only this way will have a security, usually over 99%, over the paternity of the child.

Determination of motherhood

In some cases is to determine what is the maternal genetic line, in this case is used mitochondrial DNA transmitted to the child's mother / daughter and that in turn is transmitted by them to their descendants.

Curiosities:


Is it possible to do a paternity test without the presence of the biological mother?
Yes, this test requires additional testing, ensuring an accuracy similar to that performed in the presence of the mother.
Is it possible to do a paternity test before birth of the child?
Yes, it is from week 12 of pregnancy through an analysis of CVS called, and after 16 weeks of pregnancy is also possible to do in amniotic fluid through amniocentesis. The taking of these samples is performed in specialized medical office under ultrasound control constant, and can be complemented by chromosome analysis or other genetic analyzes.
Can you do a paternity test to a deceased person?
Paternity testing can be done even if there are people involved in establishing paternity allowing died many years after death.

Is it the same blood sample or saliva sample?
Yes, it is exactly the same, the source of a sample for DNA does not affect the paternity test.


By: Merce and Cris ;)

Thursday, 19 April 2012

The "eternal" light


Benito Muros is the name of a Spanish man who says that he has discovered the light bulb that is for all lifelong. He also says that light factories program bulbs to fail and have to buy more and more.
Benito has discovered this bulb after 11 years of research and differs from others in that it is programmed to break down and it is said that can last a lifetime.
Everything started 11 years ago when he went to Livermore, in California. There was a bulb turned on uninterrupted since 111 years, he spoke with the descendants of the creators but there wasn't much information about that. He looked for more information and had enought to start looking by himself.
The bulb created by EPO Electrics responds to today's need for a compromise with the environment. As it lasts a lifetime, does not generate waste. At the same time, allows energy savings of up to 92% and emits up to 70% less CO2.

Wednesday, 18 April 2012

Polly sheep


Polly was born in 1997 in Edinburg. It was the first clonic and transgenic cloned mammal.
This sheep was created few months after Dolly. It had a human gen implanted in a enmbryo cell.
It was named "Polly" because it type was Poll Dorset.
It was created with the purpose of use its milk, which had a human protein, as a cure for hemophilia and osteoporosis.