Feeds:
Entradas
Comentarios

Posts Tagged ‘Ciencia’

 

Drones could help save the lives of heart attack victims by delivering defibrillators faster than an ambulance can arrive at the scene, according to a report Tuesday in the Journal of the American Medical Association.

By reducing the crucial intervention time after a heart attack, drone delivery of the easy-to-use kit could raise the chances of survival of cardiac arrest victims, said the report compiled by Swedish researchers.

Test runs of drones in Sweden showed they can deliver a defibrillator to an out-of-hospital patient on average 16 minutes faster than a traditional emergency medical response vehicle could reach a victim.

Currently, people stricken by heart attacks outside of hospitals have only an eight to 10 percent survival rate in the United States. Reducing access time to a defibrillation — which restarts the heart with an electric pulse — is seen as key factor to increasing survival.

Researchers from the Karolinska Institutet in Stockholm carried out tests near the Swedish capital and concluded that a remote-controlled drone equipped with an external defibrillator, and guided by GPS and cameras, could be activated by an emergency services dispatcher.

There are more than 350,000 cardiac arrests each year in the United States, according to the American Heart Association.

For the study, the Swedish Transportation Agency equipped a drone with a defibrillator weighing 1.7 lbs and deployed it at a fire station just north of Stockholm. Eighteen test runs were carried out to locations within a 6.2 mile radius, with a median distance of two miles.

The average time for the drone to arrive at the scene was 5:21 minutes against 22:00 minutes for an emergency medical services vehicle. In every case, the drone arrived quicker than an ambulance, on average slashing 16.39 minutes off the response time.

“Saving 16 minutes is likely to be clinically important. Nonetheless, further test flights, technological development, and evaluation of integration with dispatch centers and aviation administrators are needed,” the authors of the report said.

 

-AFP

Anuncios

Read Full Post »

 

The Copernicus Sentinel-2B satellite takes us over part of the western Netherlands on 16 March, with the capital city of Amsterdam at the centre of the image.

Divided among some 90 islands, Amsterdam has more than 100 km of canals. The city lies about 2 m below sea level – in fact, around a third of the country lies below sea level, making it susceptible to floods. Rising sea waters during periods of bad weather – called storm surges – are kept under control by dams, dikes, floodgates and natural sand dunes.

While we can see the North Sea on the left, the water on the right is part of the Markermeer lake. This area was once a saltwater bay called the Zuiderzee, but was closed off by a dam in the 1930s. The bay was drained in stages and land reclaimed, including Flevoland on the right side of the image – one of the world’s largest artificial islands.

Another relatively recent addition to the Dutch landscape is the neighbourhood of IJburg comprising six artificial islands east of Amsterdam. The first residents moved in only 15 years ago.

Satellites like Sentinel-2 can help to monitor urban expansion. For example, in the upper-right corner we see what looks like an artificial island being built – but this structure is not present in satellite imagery from a year ago.

The meticulously planned landscape seen in most of the image breaks for the coastal dunes along the left. These areas are home to dozens of bird species, as well as deer, squirrels, rabbits and foxes. In one protected area, grazing animals including Highland cattle were introduced to the area.

This image is featured on the Earth from Space video programme.
Id 376891

 

Web: European Space Agency

Read Full Post »

hyperbolic geometry

 

The researchers built a VR landscape that followed the rules of hyperbolic geometry. Here, a screengrab of one of these non-Euclidean worlds in the research group’s simulations.

Image: eleVR/Hypernom

 

Web: livescience.com

Read Full Post »

StarViewerTeam.com

El nuevo estudio científico,  que lleva por título “Regulation of Romantic Love Feelings: Preconceptions, Strategies, and Feasibility” ( Regulación de los Sentimientos del Amor Romántico: Preconcepciones, Estrategias y Viabilidad), recientemente publicado por el equipo científico formado por Sandra J. E. Langeslag y Jan W. Van Strien, pone de relieve que los sentimientos profundos de caracter amoroso, pueden ser regulados de forma consciente por nuestro Sistema Nervioso Central, pese a que habitualmente los resultados en una primera instancia podrían hacernos pensar que existe un patrón aparente entre la mayor intensidad afectiva amorosa tras una ruptura o el aparente declive de la intensidad amorosa en las relaciones largas.

Como ponen de manifiesto los autores del estudio, los resultados muestran que existen poderosas estrategias de regulación en nuestro comportamiento consciente que nos permiten regular la intensidad del amor que sentimos desde una profundidad mucho mayor de la que “a priori” se venía pensando…

Ver la entrada original 112 palabras más

Read Full Post »

CAVES2016 - Exploration Day 3//embedr.flickr.com/assets/client-code.js
 

An international team of six astronauts from China, Japan, USA, Spain and Russia have descended into the caves of Sardinia, Italy, to explore the depths and train for life in outer space. One of the last unexplored environments on our planet, caves offer parallels to exploring space. ESA’s underground training course “Cooperative Adventure for Valuing and Exercising human behaviour and performance Skills” – CAVES – prepares astronauts over two weeks to work safely and effectively in multicultural teams.

After a week of training, the astronauts are now descending into the caves to set up basecamp 800 m underground.

The similarities between caving and spaceflight are highlighted throughout the course. Speleologists and astronauts adopt the ‘buddy system’, and both astronaut trainers and CAVES instructors repeat the same mantras of “slow is fast,” “check your gear, and then trust it,” and “always be aware of where you are and where your buddy is.”

In every expedition, the astronauts work with seasoned instructors and explorers. “A mutual trust builds as stories and anecdotes are shared,” says mission director Loredana Bessone. “The atmosphere is always one of respect.”

CAVES focuses on multicultural approaches to leadership, following orders, teamwork and decision-making. At the end of the course the astronauts will have a better understanding of how they function in a multicultural team and what they are skilled at, as well as areas for self-improvement.

Behavioural activities are woven into the course to foster effective communication, decision-making, problem-solving, leadership and team dynamics.

“From the first activity together, the support team saw that this year’s ‘cavenauts’ would be a really tight crew,” says Loredana. “Their teamwork is an example of what an expedition in an isolated, risky and alien environment should be.”

This year’s participants are an even more international team than ever, including ESA’s Pedro Duque, NASA’s Jessica Meir and Richard Arnold, Japan’s astronaut Aki Hoshide, China’s Ye Guangfu and Russia’s Sergei Korsakov.

The cavenauts bring a broad mix of skills with their backgrounds in science, engineering, flying, military and education as well as experience and culture.

Pedro Duque comments, “It is a great privilege to take part in one of the last exploration activities remaining on Earth and to enter the underworld supervised by world-class experts.

“We will use the knowledge we gain about ourselves and the group in our next space endeavours.”

Follow the underground adventure on Twitter with via @ESA_CAVES, and on the CAVES blog where the crew have provided impressions of their first week of training.

Loredana concludes: “ESA’s CAVES course brings together spacefarers from all over the world to create the best crew. We hope to see them one day exploring other worlds with the same awe and respect we have for caves.”

 
Underground and wet//embedr.flickr.com/assets/client-code.js

Underground pool//embedr.flickr.com/assets/client-code.js

CAVES 2016 – Exploring a cave//embedr.flickr.com/assets/client-code.js
 

Text: Staff Writers

Photos: European Space Agency | Flickr

Web: Space Daily

Read Full Post »

Read Full Post »

Splitting Colors

Read Full Post »

Older Posts »

A %d blogueros les gusta esto: