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Beniamino Abis

Two Suns Could Boost Odds of Habitable 'Exomoons' - 1 views

www.space.com/-stars-habitable-exomoons.html

science space exomoons habitability

shared by Beniamino Abis on 30 Apr 14 - No Cached
  • Beniamino Abis on 30 Apr 14
     
    The habitable zones of single stars are larger and wider as the temperatures increase. Although hotter stars have the widest regions where water can lie on the surface, they also have short lifetimes that limit the ability of life to evolve. Moons in close binary solar systems have a better chance of hosting life than those in single-star systems, new research has shown.
  • LeopoldS on 01 May 14
     
    looks like the study Aurélie wanted to do ...
Nicholas Lan

Stability and Transport of Graphene Oxide Nanoparticles in Groundwater and Surface Water - 0 views

online.liebertpub.com/...ees.2013.0392

graphene science environment

shared by Nicholas Lan on 29 Apr 14 - No Cached
  • Nicholas Lan on 29 Apr 14
     
    study on the environmental effects of graphene. related article http://gizmodo.com/graphene-might-be-way-worse-for-the-environment-than-we-1568823876
Luís F. Simões

Singularity University, class of 2010: projects that aim to impact a billion people wit... - 8 views

www.kurzweilai.net/ty-webinar-today-sneak-preview

AI robotics biomedicine biotechnology electronics energy nanotechnology singularity futures social ethics space synthetic biology computer science defence

shared by Luís F. Simões on 22 Sep 10 - No Cached
  • Luís F. Simões on 22 Sep 10
     
    At the link below you find additional information about the projects: Education: Ten weeks to save the world http://www.nature.com/news/2010/100915/full/467266a.html
  • ...8 more comments...
  • LeopoldS on 23 Sep 10
     
    this is the podcast I was listening to ...
  • Dario Izzo on 23 Sep 10
     
    We can do it in nine :)
  • LeopoldS on 24 Sep 10
     
    why wait then?
  • Juxi Leitner on 24 Sep 10
     
    hmm, wonder how easy it is to get funding for that, 25k is a bit steep for 10weeks :)
  • Dario Izzo on 26 Sep 10
     
    well, we wait for the same fundings they get and then we will do it in nine.... as we say in Rome "a mettece un cartello so bboni tutti". (italian check for Juxi)
  • LeopoldS on 26 Sep 10
     
    and what you think about the project subjects?
  • LeopoldS on 26 Sep 10
     
    I like the fact that there are quite a lot of space projects .... and these are not even bad in my view: The space project teams have developed imaginative new solutions for space and spinoffs for Earth. The AISynBio project team is working with leading NASA scientists to design bioengineered organisms that can use available resources to mitigate harsh living environments (such as lack of air, water, food, energy, atmosphere, and gravity) - on an asteroid, for example, and also on Earth . The SpaceBio Labs team plans to develop methods for doing low-cost biological research in space, such as 3D tissue engineering and protein crystallization. The Made in Space team plans to bring 3D printing to space to make space exploration cheaper, more reliable, and fail-safe ("send the bits, not the atoms"). For example, they hope to replace some of the $1 billion worth of spare parts and tools that are on the International Space Station.
  • Dario Izzo on 26 Sep 10
     
    and all in only a three months summer graduate program!! that is impressive. God I feel so stupid!!!
  • LeopoldS on 26 Sep 10
     
    well, most good ideas probably take only a second to be formulated, it's the details that take years :-)
  • Dario Izzo on 26 Sep 10
     
    I do not think the point of the SU is to formulate new ideas (infact there is nothing new in the projects chosen). Their mission is to build and maintain a network of contacts among who they believe will be the 'future leaders' of space ... very similar to our beloved ISU.
Thijs Versloot

China team takes on tech challenge of supercavitation - 1 views

phys.org/...team-tech-supercavitation.html

technology submarine cavitation

shared by Thijs Versloot on 27 Aug 14 - No Cached
annaheffernan liked it
  • Thijs Versloot on 27 Aug 14
     
    "A Soviet supercavitation torpedo called Shkval was able to reach a speed of 370km/h or more - much faster than any other conventional torpedoes," he said. However, The SCMP highlighted two problems in supercavitation technology. First, the submerged vessel needed to be launched at high speeds, approaching 100km/h, to generate and maintain the air bubble. Secondly, it is difficult if not impossible to steer the vessel using conventional mechanisms, which are inside the bubble, without direct contact with water. As a result, its application has been limited to unmanned vessels, fired in a straight line.
  • Paul N on 27 Aug 14
     
    can't you just selectively inject the gas so that you control in which direction the bubble forms?
Thijs Versloot

Sunlight to jet fuel - European collaboration SOLAR-JET produces first solar kerosene - 4 views

www.solar-jet.aero/...ldquosolarrdquo-kerosene-6.php

solar fuel kerosene propulsion CO2

shared by Thijs Versloot on 05 May 14 - No Cached
  • Thijs Versloot on 05 May 14
     
    With the first ever production of synthesized "solar" jet fuel, the EU-funded SOLAR-JET project has successfully demonstrated the entire production chain for renewable kerosene obtained directly from sunlight, water and carbon dioxide (CO2), therein potentially revolutionizing the future of aviation. This process has also the potential to produce any other type of fuel for transport applications, such as diesel, gasoline or pure hydrogen in a more sustainable way.
Thijs Versloot

Need to analyse vast amounts of data? Listen to it! (NASA) - 2 views

www.nasa.gov/...nasa-scientists-listen-to-data

data analysis

shared by Thijs Versloot on 05 Sep 14 - No Cached
  • Thijs Versloot on 05 Sep 14
     
    Robert Alexander spends parts of his day listening to a soft white noise, similar to water falling on the outside of a house during a rainstorm. Every once in a while, he hears an anomalous sound and marks the corresponding time in the audio file.
  • Athanasia Nikolaou on 05 Sep 14
     
    I want this guy's job!
Thijs Versloot

The physics of flying snakes - 1 views

arxiv.org/1309.2969

bio science

shared by Thijs Versloot on 01 Nov 13 - No Cached
  • Thijs Versloot on 01 Nov 13
     
    The researchers have created two-dimensional computer models of the flying snakes, but they've also done real-world simulations - using 3D printed components in water tunnels. Both show that snake-shaped objects would get a special aerodynamic pop should they tilt their bodies at 35 degrees as they drop from tree branches.
johannessimon81

3D-printing synthetic tissues - 0 views

www.kurzweilai.net/3d-printing-synthetic-tissues

BIO science technology

shared by johannessimon81 on 19 Jun 13 - No Cached
  • johannessimon81 on 19 Jun 13
     
    "The new type of material consists of tens of thousands of picoliter connected water droplets encapsulated within lipid films, which can perform some of the functions of the cells inside our bodies."
Athanasia Nikolaou

Study finds link between the atmospheric rivers and climate - 1 views

www.nasa.gov/...earth20131108.html

PHY climate atmospheric rivers oscillations

shared by Athanasia Nikolaou on 08 Nov 13 - No Cached
  • Athanasia Nikolaou on 08 Nov 13
     
    Atmospheric rivers, short-lived wind tunnels are created in the upper troposphere and carry vast amounts of water. They 'fuel' from the tropical Pacific reservoir and cause heavy precipitation events and even floods to mid-latitude land, as soon as they encounter the Sierra mountains. The new finding is that two inter-hemispheric climatic oscillation modes allow for their creation, as soon as they are found in a certain phase combination.
  • Paul N on 13 Nov 13
     
    Could we conceivably control these like we're thinking to do with taifuns? :)) Would be geoengineering at its finest
Nina Nadine Ridder

Carbon dioxide pools discovered in Aegean Sea - 1 views

phys.org/...-dioxide-pools-aegean-sea.html

marine_carbon geoengineering science ESS

shared by Nina Nadine Ridder on 17 Jul 15 - No Cached
  • Nina Nadine Ridder on 17 Jul 15
     
    The location of the second largest volcanic eruption in human history, the waters off Greece's Santorini are the site of newly discovered opalescent pools forming at 250 meters depth. The interconnected series of meandering, iridescent white pools contain high concentrations of carbon dioxide (CO 2) and may hold answers to questions related to deepsea carbon storage as well as provide a means of monitoring the volcano for future eruptions.
  • Thijs Versloot on 21 Jul 15
     
    We were there last year, swimming in one of those 'healthy' mud pits..
  • LeopoldS on 21 Jul 15
     
    250m and we did not know about them ??
annaheffernan

Charging up with jumping droplets - 3 views

physicsworld.com/...rging-up-with-jumping-droplets

shared by annaheffernan on 21 Jul 14 - No Cached
  • annaheffernan on 21 Jul 14
     
    Energy harvesting device taps into atmospheric humidity - basically by exploiting the behaviour of water droplets when they come in contact with a superhydrophobic surfaces. Could it be exploited for other atmospheres?
Nina Nadine Ridder

Study suggests the Red Planet was icy rather than watery billions of years ago - 1 views

phys.org/...lanet-icy-watery-billions.html

Mars climate_science paleoclimate science ESS numerical_climate_modelling 3D_model

shared by Nina Nadine Ridder on 20 Jul 15 - No Cached
  • Nina Nadine Ridder on 20 Jul 15
     
    The high seas of Mars may never have existed. According to a new study that looks at two opposite climate scenarios of early Mars, a cold and icy planet billions of years ago better explains the water drainage and erosion features seen today.
  • Thijs Versloot on 21 Jul 15
     
    That's a lot of assumptions along the way, what do you think of it Nina?
Nina Nadine Ridder

Microscopic fish are 3-D-printed to do more than swim: Researchers demonstrate a novel ... - 1 views

www.sciencedaily.com/...150826081726.htm

technology science robotics 3D-printing

shared by Nina Nadine Ridder on 27 Aug 15 - No Cached
  • Nina Nadine Ridder on 27 Aug 15
     
    Useful for space exploration, e.g. subsurface water reservoirs such as Europa or Enceladus? Nanoengineers at the University of California, San Diego used an innovative 3-D printing technology they developed to manufacture multipurpose fish-shaped microrobots -- called microfish -- that swim around efficiently in liquids, are chemically powered by hydrogen peroxide and magnetically controlled.
Nina Nadine Ridder

Earth's extremes point the way to extraterrestrial life - 1 views

phys.org/...mes-extraterrestrial-life.html

BIO space alien_life terraforming planetary_science science

shared by Nina Nadine Ridder on 27 Aug 15 - No Cached
  • Nina Nadine Ridder on 27 Aug 15
     
    Seems a little speculative but pretty interesting thoughts. In regards to terraforming Mars this might be of interest: "During the daytime, plant-like microorganisms on a Martian-like surface could photosynthesize hydrogen peroxide. At night, when the atmosphere is relatively humid, they could use their stored hydrogen peroxide to scavenge water from the atmosphere, similar to how microbial communities in the Atacama use the moisture that salt brine extracts from the air to stay alive."
jcunha

Explosion-Generated Collapsing Vacuum Bubbles Reach 20,000 Kelvin - 1 views

www.physicsforums.com/...uum-bubbles-reach-20000-kelvin

PHY sonoluminescence fun

shared by jcunha on 16 Sep 15 - No Cached
  • jcunha on 16 Sep 15
     
    "In a recent paper published in Physical Review Letters (PRL) Jérôme Duplat and Emmanuel Villermaux developed a method to generate centimeter-sized vacuum bubbles in water with miniature laser-driven explosions, and observed the flash of light produced as the bubble collapsed a not-fully-understood phenomenon known as sonoluminescence." Amazingly they concluded that the temperatrue inside the bubble as it collapses is about 26000 K. At this temperatures some (not me) argue for nuclear fusion... Intriguing stuff!!! Check the videos! Yet another test for the 'Experimental Physics Stagiare' :-)?
  • dejanpetkow on 16 Sep 15
     
    For sure no fusion, that starts appr. from about 20keV, not 20kK. Between both there is still a factor of 11500. What I would rather expect is that the conditions are not appropriate to work with Maxwellian distribution functions. If certain fusion products should be measurable, than this would rather confirm (but not proof) the hypothesis that they do not have Maxwellians but something close to monoenergetic. But most probably they will not measure fusion products, hence no fusion, hence no confusion.
Joris _

American Institute of Aeronautics and Astronautics - Space and the Biological Economy - 0 views

www.aiaa.org/content.cfm

BIO MAD space science

shared by Joris _ on 11 Oct 10 - No Cached
  • the U.S. space program has a robust life science program that is diligently working to innovate new approaches, research and technologies in the fields of biotechnology and bio-nanotechnology science, which are providing new solutions for old problems – including food security, medical needs and energy needs
  • more money be allocated to develop environmentally sound and energy efficient engine programs for commercial and private aviation
  • waste water program
  • ...3 more annotations...
  • we lack fundamental knowledge about the entire effect of the photosynthesis system on food growth, and that space-based research could provide vital clues to scientists on how to streamline the process to spur more efficient food growth
  • From the start of the space age until 2010 only around 500 people have journeyed into space, but with the advent of private space travel in the next 24 months another 500 people are expected to go into space
  • Wagner indentified prize systems that award monetary prizes to companies or individuals as an effective way to spur innovation and creativity, and urged the Congressional staffers present to consider creating more prize systems to stimulate needed innovation
  • Joris _ on 11 Oct 10
     
    a bunch of ideas, iinitiatives, and good points about upcoming changes in space ...
pacome delva

Beetle beauty captured in silicon - physicsworld.com - 1 views

physicsworld.com/...44389

biomimicry beetles electromagnetism

shared by pacome delva on 22 Nov 10 - No Cached
  • Researchers in Canada have created a new material that mimics the brilliant iridescent colours seen in beetle shells. As the eye-catching effect can be switched off with the simple addition of water, the researchers believe their new material could lead to applications including "smart windows".
pacome delva

Information converted to energy - physicsworld.com - 4 views

physicsworld.com/...44385

phy information maxwell_demon

shared by pacome delva on 22 Nov 10 - No Cached
  • By tracking the particle's motion using a video camera and then using image-analysis software to identify when the particle had rotated against the field, the researchers were able to raise the metaphorical barrier behind it by inverting the field's phase. In this way they could gradually raise the potential of the particle even though they had not imparted any energy to it directly.
  • "Nobody thinks of using bits to boil water," he says, "but that would in principle be possible at nanometre scales." And he speculates that molecular processes occurring in nature might already be converting information to energy in some way. "The message is that processes taking place on the nanoscale are completely different from those we are familiar with, and that information is part of that picture."
  • pacome delva on 22 Nov 10
     
    crazy, the Maxwell's demon at work !
  • Nicholas Lan on 23 Nov 10
     
    crazy indeed
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