Feeds:
Entradas
Comentarios

Posts Tagged ‘Ciencia’

Gray Matters

Read Full Post »

 

Small crossovers like the 2020 Hyundai Venue are cheap cars for a new generation.

The tiny Hyundai hatchback that made its debut Wednesday at the 2019 New York International Auto Show has a smaller footprint than the Accent sedan and slots below the compact Kona in the automaker’s menu of crossovers.

Offered in SE and SEL trims, the Venue goes long on features that likely will appeal to younger buyers, even though the space doesn’t go long itself. Every Venue is equipped with an 8.0-inch touchscreen with Apple CarPlay and Android Auto compatibility, 15-inch wheels, automatic emergency braking, a split-folding rear seat, active lane control, and a USB port. Two USB chargers, 17-inch wheels, heated seats, navigation, and automatic climate control are on the options list.

 

 

Hyundai didn’t say how much the Venue would cost when it goes on sale later this year, but it’s a safe bet to cost around $18,000 to start like the Nissan Kicks, Hyundai’s chief competitor.

DON’T MISS: Read our 2020 Hyundai Venue preview

Like the Kicks, the Venue doesn’t offer all-wheel drive on any model and relies on a 121-horsepower, 1.6-liter inline-4 solely for motivation. The Venue is equipped with a 6-speed manual as standard equipment, but more versions are likely to mated to a continuously variable automatic transmission (CVT) when they leave the factory in Ulsan, South Korea.

The Venue’s wheelbase measures shorter than 100 inches, about 3 inches shorter than the Kona. Behind the second row, the Venue offers 18.7 cubic feet of cargo room that expands to 31.9 cubic feet with the seats folded forward.

 







 

Black or gray cloth upholstery is standard although, when paired with denim blue paint outside, denim upholstery with synthetic leather is optional.

Hyundai hasn’t yet said how efficient the Venue will be but a similar engine found in the Accent returns up to 32 mpg combined, according to the EPA. Low power and high efficiency are par for the course: None of the crossovers in the Venue’s class—Ford EcoSport, Toyota C-HR, Chevy Trax, and Kicks—are screamers.

Geared toward city-dwellers and first-time buyers, the Venue’s affordability and unique looks will be its tune. And budget shoppers will be listening.

For more from the 2019 New York auto show, head over to our dedicated hub.

 

 

Source: thecarconnection.com

Read Full Post »

The Event Horizon Telescope has captured a photo of a supermassive black hole at the center of M87, a galaxy 54 million light years away.

Event Horizon Telescope collaboration et al.

 

In the century since Einstein predicted the existence of black holes in his theory of gravity, astrophysicists have turned up overwhelming evidence for the things. They’ve observed the push and pull of black holes on the orbits of nearby stars and planets. They’ve heard the vibrations, or gravitational waves, resonating from black holes colliding. But they’d never glimpsed a black hole face to face—until now. On Wednesday, astrophysicists announced they had captured the first-ever image of a black hole.

The picture, taken over five days of observations in April 2017 using eight telescopes around the world by a collaboration known as the Event Horizon Telescope, depicts luminous gas swirling around a supermassive black hole at the center of M87, a galaxy 54 million light-years away. Past the bright lights, though, is the black hole’s telltale feature: its event horizon. The event horizon is the edge of the spacetime abyss, where gravity is so strong that no light can escape from it. “It’s the point of no return,” says Feryal Özel of the University of Arizona, who is a member of the EHT collaboration. In the image, it manifests itself as the “sudden absence of light,” she says.

Previously, researchers had captured a blobby jet of light emerging from where the M87 black hole was predicted to be—but they couldn’t definitively see the black hole because their instruments were nowhere near as sharp as EHT’s. “It’s like going from a cheap smartphone camera to a high definition IMAX cinema,” says astrophysicist Andrew Strominger of Harvard University, who was not involved in the work.

 

The South Pole Telescope, one of eight telescopes used to capture the first black hole image. Dan Marrone/

This black hole is about 6.5 billion times the mass of the sun. Still, it’s tiny from a vantage point on Earth, just 50 microarcseconds wide in the sky, which makes it about as hard to see as a donut placed on the moon. It took eight different telescopes to image it. The telescopes collected observational data that was synced with the precision of a billionth of a second.

To see the black hole’s boundary between light and dark, the astrophysicists captured radio waves—light 1.3 millimeters in wavelength, invisible to the human eye—emitted by the gas swirling around the black hole. The gas emits light of all different wavelengths, including visible light, but the researchers chose this particular wavelength because it can sail through entire galaxies and even Earth’s own atmosphere without being absorbed. But they still needed good weather at all eight of their telescope sites to see the black hole. Before switching on their telescopes, they had to monitor the moisture in the air, says Özel—too much humidity would ruin their images. To minimize the chance of rain, they built the telescopes in dry regions, including the South Pole and the Atacama Desert in Chile.

M87’s black hole is relatively close to Earth, as the light coming from it was only emitted 54 million years ago—so we’re seeing it at a more mature moment in its existence. “At this point in the age of the universe, black holes have calmed down,” says Özel. “They’re basically eating gas trickling in from nearby stars.” M87’s black hole does emit bright jets of gas, but it’s still pretty dim compared to younger black holes that are further away. These younger black holes accumulate larger amounts of matter, so their swirls of luminous gas shine brighter.

 

Source: wired.com

Read Full Post »

Hurricane Formation

 

Source: wunderground.com

Read Full Post »

Astrophilio

How can the past and the future be, when the past no longer is, and the future is not yet?

Time is one of the greatest mysteries of the universe. We are all swept up in the river of time against our will. From the movies Back to the Future and Déjà vu to the most recent Tomorrowland and Project Almanac, pop culture has embraced us to open the drapes of time travel. We use the world of Science Fiction to explore the fundamentals – and the limits – of the laws of physics as we know them today. But here’s the question: Is time travel beyond the realm of physical possibility? Let’s find out.

Time travel itself does have some science facts. Around the turn of the century, Einstein has shocked us with his theory of General Relativity. According to his theory, gravity affects time and space, so it…

Ver la entrada original 668 palabras más

Read Full Post »

One Of The Towering Intellects Of Our Time Has Died

Photo: Laurette McGovern

Stephen Hawking Biography

Official Website: hawking.org.uk/

Read Full Post »

Read Full Post »

Classifying clouds

Cloud_infographic

 

Web: World Meteorological Organization

Read Full Post »

 

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

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 10 Aniversario. STVT10

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 »

The Lancet Oncology

the lancet
En lo que a transgénicos se trata, cada caso debe ser evaluado mediante el método científico, en animales y humanos, efectuando estudios aleatorizados y a doble ciego, como los utilizados por la industria farmacéutica. Los niños y mujeres embarazadas, NO deberían ingerir alimentos genéticamente modificados.

Sobre el herbicida glifosato, según The Lancet Oncology, hay “evidencia limitada” de que puede producir linfoma no-Hodgkin en seres humanos, y hay pruebas “convincentes” de que puede causar cáncer en animales de laboratorio.

The Lancet Oncology, es una de las publicaciones científicas más prestigiosas del mundo.

Read Full Post »


 

  • DescriptionThe Planet2 service, made available in 2012 for light aircraft via the original project, has recently been extended to business, regional and research aircraft. This Planet2 extension required the development of an enhanced avionics unit certified by the European Aviation Safety Agency for integration into the cockpit. 

 
Source: esa.int/spaceinimages/Images

 

Read Full Post »

Use the wind

Read Full Post »


 
Source: fullthrottleauto.tumblr.com

Read Full Post »

Hallan pruebas de vida después de la muerte

Read Full Post »

Older Posts »

A %d blogueros les gusta esto: