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johannessimon81

Chemists create molecular 'leaf' that collects and stores solar power without solar panels - 1 views

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    An international team of scientists led by Liang-shi Li at Indiana University has achieved a new milestone in the quest to recycle carbon dioxide in the Earth's atmosphere into carbon-neutral fuels and others materials.
Dario Izzo

Space4Life - Lab2Moon - 3 views

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    Cyano bacteria to shield from radiation. An idea from italians flying to the Moon via Team Indus
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    Nice idea, but is it really new: resistance of cyanob. to UV radiation has been known but studies have been inconclusive as to under what resource limitations it works, but according to what we see from evolution: on Earth it works, since they survived pre-ozone atmosphere!

    some papers from a quick google search:

    1999 http://www.tandfonline.com/doi/pdf/10.1080/09670269910001736392

    2014 https://www.ncbi.nlm.nih.gov/pubmed/25463663
jaihobah

[1701.01109] Fast Radio Bursts from Extragalactic Light Sails - 2 views

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    "We examine the possibility that Fast Radio Bursts (FRBs) originate from the activity of extragalactic civilizations"
LeopoldS

Bioadhesives - 1 views

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    Interesting European network on glues in nature
andrej_k

Scientists discover how to 'upload knowledge to your brain' - 1 views

jcunha

HBP Neuromorphic Computing Platform Guidebook (WIP) - 0 views

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    "The Neuromorphic Computing Platform allows neuroscientists and engineers to perform experiments with configurable neuromorphic computing systems. The platform provides two complementary, large-scale neuromorphic systems built in custom hardware at locations in Heidelberg, Germany (the "BrainScaleS" system, also known as the "physical model" or PM system) and Manchester, United Kingdom (the "SpiNNaker" system, also known as the "many core" or MC system)."
LeopoldS

Rapid adaptation to microgravity in mammalian macrophage cells - 72510785c9ca9518b647f9... - 1 views

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    very nice paper on adaptation of cells to microgravity
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    You need to avoid posting these types of links in the title as it is not managed well by plugins connected to our diigo account. Try to go to the source next time, and get rid of useless url codes.
andrej_k

Physicists extend quantum machine learning to infinite dimensions - 1 views

jcunha

New method uses heat flow to levitate variety of objects - 1 views

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    Normally we associate levitation of objects to superconducting materials. Here a new technique is shown where levitation of a whole new range of materials is shown.
    "The large temperature gradient leads to a force that balances gravity and results in stable levitation," said Fung, the study's lead author. "We managed to quantify the thermophoretic force and found reasonable agreement with what is predicted by theory. This will allow us to explore the possibilities of levitating different types of objects."
    Paper at http://aip.scitation.org/doi/10.1063/1.4974489

    New microgravity experiments possibility?
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    not really I fear .... "Typical sizes of the trapped particles are between 10 μm and 1 mm at a pressure between 1 and 10 Torr. The trapping stability is provided radially by the increasing temperature field and vertically by the transition from the free molecule to hydrodynamic behavior of thermophoresis as the particles ascend."
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    Might still be OK micro to mm sized experiments.
    The technique seams to be reliable and cheap enough to compete with other types of microgravity approaches - more research needed to define boundaries of course.
jcunha

NASA proposes a magnetic shield to protect Mars' atmosphere - 2 views

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    In the Planetary Science Vision 2050 Workshop a cool concept for a magnetic dipole sitting at Mars L1 with an estimated field of 1-2 Tesla was proposed to shield Mars from Solar Winds and provide an elementary magnetic shielding to Mars.
Dario Izzo

A harsh critics to GCMs from Judith Curry - 1 views

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    "By extension, GCMs are not fit for the purpose of
    justifying political policies to fundamentally alter world social, economic and energy
    systems. It is this application of climate model results that fuels the vociferousness of the debate surrounding climate models."
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    but you know wo these global warming policy foundation is, do you? they are the main advocacy group for climate change deniers in the UK, nothing scientific to start with; fine to post here reasonable scientific papers criticising global climate models but please not this shit
Alexander Wittig

Calling Bullshit - 2 views

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    A college course at University of Washington on "Calling Bullshit". We should invite them to give a lunch lecture at ESA...

    Our aim in this course is to teach you how to think critically about the data and models that constitute evidence in the social and natural sciences.

    While bullshit may reach its apogee in the political domain, this is not a course on political bullshit. Instead, we will focus on bullshit that comes clad in the trappings of scholarly discourse.

    Our learning objectives are straightforward. After taking the course, you should be able to:

    * Remain vigilant for bullshit contaminating your information diet.
    * Recognize said bullshit whenever and wherever you encounter it.
    * Figure out for yourself precisely why a particular bit of bullshit is bullshit.
    * Provide a statistician or fellow scientist with a technical explanation of why a claim is bullshit.
    * Provide your crystals-and-homeopathy aunt or casually racist uncle with an accessible and persuasive explanation of why a claim is bullshit.

    We will be astonished if these skills do not turn out to be among the most useful and most broadly applicable of those that you acquire during the course of your college education.
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    love it:
    "Politicians are unconstrained by facts. Science is conducted by press release. Higher education rewards bullshit over analytic thought. Startup culture elevates bullshit to high art. Advertisers wink conspiratorially and invite us to join them in seeing through all the bullshit - and take advantage of our lowered guard to bombard us with bullshit of the second order. The majority of administrative activity, whether in private business or the public sphere, seems to be little more than a sophisticated exercise in the combinatorial reassembly of bullshit.

    We're sick of it. It's time to do something, and as educators, one constructive thing we know how to do is to teach people. So, the aim of this course is to help students navigate the bullshit-rich modern environment by identifying bullshit, seeing through it, and combating it with effective analysis and argument."
LeopoldS

Introducing Handle - YouTube - 1 views

shared by LeopoldS on 01 Mar 17 - No Cached
jcunha liked it
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    frightening ...
Alexander Wittig

Trump Asks NASA to Explore Putting Crew on Rocket's Debut Flight - 0 views

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    Trying the new rocket with humans right away (and 1.5 years to go). What can possibly go wrong?

    The Trump administration has directed NASA to study whether it is feasible to fly astronauts on the debut flight of the agency's heavy-lift rocket, a mission currently planned to be unmanned and targeted to launch in late 2018, officials said on Friday.
LeopoldS

Strong evidence for d-electron spin transport at room temperature - 2 views

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    Strong evidence for d-electron spin transport at room temperature
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    WOW! Great non-local signals, at room temperature!!!
    Spin transistor on the way finally!? (of course electric field gate controlled is fundamental)
    See more about the "quest" for the spin transistor here: http://spectrum.ieee.org/semiconductors/processors/the-quest-for-the-spin-transistor
Alexander Wittig

Self-Destructing Gadgets Made Not So Mission Impossible - 1 views

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    Self-destruct options from the Mission: Impossible movies could become a reality for even the most common smartphones and laptops used by government officials or corporate employees. A new self-destruct mechanism can destroy electronics within 10 seconds through wireless commands or the triggering of certain sensors.

    Just don't leave your computer sitting in the sun for long...
jcunha

The thermodynamics of learning - 3 views

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    It is typically considered that brain's process of learning is highly energy efficient. While investigating how efficiently the brain can learn new information, physicists have found that, at the neuronal level, learning efficiency is ultimately limited by the laws of thermodynamics.
Alexander Wittig

Proof of the Riemann Hypothesis utilizing the theory of Alternative Facts - 0 views

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    An excellent science coffee topic! This is a true breakthrough in pure mathematics with plentiful applications in the lesser sciences (such as theoretical physics). People tell me quantum gravity is already practically solved by this.

    Conway's powerful theory of Alternative Facts can render many difficult problems tractable. Here we demonstrate the power of AF to prove the Riemann Hypothesis, one of the most important unsolved problems in mathematics. We further suggest applications of AF to other challenging unsolved problems such as the zero-equals-one conjecture (which is also true) and the side-counting problem of the circle.
Athanasia Nikolaou

A Proposal For Juno To Observe The Volcanoes Of Io - Universe Today - 0 views

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    Combination of the radio occultation method plus change in the orbital plan in order to observe new target (the volcanic outgassing from Io satellite) by passing though the magnetosphere of Jupiter. It poses a challenge in the sensitivity of the electronics. Maybe it is accepted if the risk is low. Idea for the next GTOC challenge maybe? Optimising the cost on the electronics vs the frequency of passages?
jcunha

For this metal, electricity flows, but not the heat - 0 views

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    A good electrical conductor is normally a good heat conductor. Vanadium dioxide however seems to not be so, by being a good electrical conductor and a poor thermal conductor. Paper at http://science.sciencemag.org/content/355/6323/371
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