Cicatrices sen puntos

Investigadores da Universidade Pierre e Marie Curie de París estudaron unha solución de nanopartículas (óxido de silicio en po mesturado con auga) que podería ser empregada para pegar tecidos humanos nuns trinta segundos. Até o de agora só se probou en animais, concretamente en fígado de tenreira.

 

 

As súas vantaxes sobre os puntos de sutura convencionais son, por una banda, que as súas nanopartículas se integrarían perfectamente no organismo e por outra, que se evitarían as inflamacións e os desgarros producidos polas agullas.

Fonte: http://www.elmundo.es/salud/

Artigo resumido por Ana Rosa, Isabel e María de 3ºESO C.

How big is a nanometer?

Nanoscience and nanotechnology study the application of extremely small things that can be used in other science fields, such as chemistry, biology and engineering.
In order to understand the world of nanotechnology, we need to get an idea of the units of measure involved.

A nanometer is one-billionth of a meter although it is still large compared to the atomic scale.

Watch this video, from World Science Festival, to learn more about how big a nanometer is.
 

Deeply in love

An Oxygen atom tries to make friends on the playground. Do you know who are going to love it the most ?

VEGGIES: A RADIATION SHIELD

The vegetables like broccoli and cauliflower produce a compound called DIM in the body. A recent study shows that compound protects healthy cells from radiation. Therefore, DIM offers promise for people with cancer.

From Science  News, 30th October, 2013
Written by Emma Cepeda, Olimpia Rivero and Nerea Segade

OLDEST, MOST DISTANT GALAXY FOUND

Astronomers find the oldest galaxy . It appears near the Great Bear constellation. The name of this new galaxy is so difficult for us: z8_GND_5296. It was discovered by Steven Finkelstein and his colleagues. This new galaxy makes new stars more than 100 times faster than our galaxy does, the Milky Way.

From Science News, November 3^rd, 2013.
Written by Emma Álvarez

Comet ISON

A chunk of frozen rock and ice about the size of a mountain is moving toward the sun. Some Russian astronomers discovered the comet called ISON on Sept. 21, 2012. By Nov. 5, they estimated it was racing toward the sun at nearly 45 kilometers per second.The comet accelerates as it approaches the sun. Astronomers predict the comet will reach its closet point to the sun by the end of November.

Written by Adela Otero and María Pol