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pacome delva

Quantum mechanics boosts photosynthesis - 0 views

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    another one...
pacome delva

Condensation transition in networks and other complex systems - 4 views

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    I like this work... it mixes physics, networks and biology ! Anyone heard about her ? Here's an interesting paper found on this website: http://nuweb.neu.edu/gbianconi/condensation.pdf
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    Eh... Barabasi is really milking the golden cow :) It seems interesting, even if I don't remember enough from my statistical mechanics classes to truly understand it without a major effort. Maybe you could make a layman's science coffee about it?
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    yeah i could if there's enough interest...? do u know Barabasi ?
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    He's quite well known for his work on scale-free networks: http://en.wikipedia.org/wiki/Albert-L%C3%A1szl%C3%B3_Barab%C3%A1si He's applying them for everything and the kitchen sink :) We have a Barabasi-Albert network topology implemented in PaGMO...
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    We worked on this with Luzi a few years back ... while the analogy is original and interesting it fails to capture the dynamics of a network, e.g. if a network has hubs that grow and shrink .... Luzi worked on an extended model to solve this issue, but, if I remember correctly, he got stuck in a computationally very hard problem .... We intended to develop and use the extended model to define relevant characteristic of the ESA network formed by mail exchanges.....
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    ...but then the CMS YGT didn't really like the project
pacome delva

Randomness is no lottery thanks to entangled ions - 0 views

  • An international team of physicists has created the first system that can produce verifiably random numbers. The technique relies on the inherent uncertainties in quantum mechanics and future versions could help cryptographers to encode information more securely than ever before.
LeopoldS

Biophysical Journal - Silk Fiber Mechanics from Multiscale Force Distribution Analysis - 2 views

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    something for Camilla and Tobias ...
Giusi Schiavone

Glutamate receptors-like (GLRs) and D-serine connecting plant with animal nervous system - 3 views

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    The release reports that researcher José Feijó says the " findings, implicating analogous genes in growth processes in both plants and animals, underscores how evolution re-uses successful mechanisms, over and over again."
Luís F. Simões

Lockheed Martin buys first D-Wave quantum computing system - 1 views

  • D-Wave develops computing systems that leverage the physics of quantum mechanics in order to address problems that are hard for traditional methods to solve in a cost-effective amount of time. Examples of such problems include software verification and validation, financial risk analysis, affinity mapping and sentiment analysis, object recognition in images, medical imaging classification, compressed sensing and bioinformatics.
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    According to the company's wikipedia page, the computer costs $ 10 million. Can we then declare Quantum Computing has officially arrived?! quotes from elsewhere in the site: "first commercial quantum computing system on the market"; "our current superconducting 128-qubit processor chip is housed inside a cryogenics system within a 10 square meter shielded room" Link to the company's scientific publications. Interestingly, this company seems to have been running a BOINC project, AQUA@home, to "predict the performance of superconducting adiabatic quantum computers on a variety of hard problems arising in fields ranging from materials science to machine learning. AQUA@home uses Internet-connected computers to help design and analyze quantum computing algorithms, using Quantum Monte Carlo techniques". List of papers coming out of it.
LeopoldS

Three-Dimensional Invisibility Cloak at Optical Wavelengths - 4 views

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    more transformation optics ... 
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    I still believe that it is worth to check the thermal, mechanical and chemical properties of the developed metamaterials. For hyperbolic re-entries the radiation is still the dominating heat load source and a dominating bandwith may be indentified. A resistive metamaterial should be placed on the nose cap of the entry body in order to reduce local radiation heat load.
Francesco Biscani

Hubble Snaps Sharpest Image Yet of Jupiter Impact | Wired Science | Wired.com - 0 views

  • If whatever hit Jupiter — and astronomers might never know what it was — had instead struck Earth, it would have caused catastrophic damage to human civilization.
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    Thanks for taking the hit for us, big J!
Francesco Biscani

Apollo special: Mirrors on the moon - space - 12 July 2009 - New Scientist - 0 views

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    Maybe Pacome can come up with some nice idea on testing GR with the reflectors on the Moon?
pacome delva

Attracting a mate, nano-style - 0 views

  • As well as helping us to understand the mechanisms underlying the evolution of beauty in nature, Dufresne adds that his research has the 'potential for finding a new class of photonic (light-emitting) materials, based on disordered, instead of periodic structures.'   
pacome delva

Liquid crystals bend over backwards for electricity - 0 views

  • Antal Jákli, at Kent State University, and colleagues have made use of a property called flexoelectricity, where materials, such as LCs, convert mechanical energy into electrical energy when they are flexed.
Francesco Biscani

BBC NEWS | Science & Environment | 'Tiny chance' of planet collision - 0 views

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    Laskar does it again.... any comment, Pacome? :-)
Tobias Seidl

From ultra-soft slime to hard {alpha}-keratins: The many lives of intermediate filament... - 0 views

  • The diverse mechanisms described here have been employed by animals to generate materials with stiffness values that span an impressive eleven orders of magnitude.
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    One basic molecule allows to achieve a broad range of material stiffness.
Tobias Seidl

Biomechanics: Serpentine steps : Article : Nature - 0 views

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    The biomechanics of serpentine locomotion have been examined. Apparently it is very similar to legged locomotion. In the unlikely case ESA wants to build a serpentine robot, this paper should be a first read.
Tobias Seidl

Hygromorphs: from pine cones to biomimetic bilayers - Interface - 0 views

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    This is about biological and technical hygromorphs, i.e. structures that change shape according to humidity. Next to pine cones, there is also a cool study on wheat awns which drill themselves into the soil just by daily variance of air humidity. Biomimetics would be passively controlled acutators or humidity driven valves in space station to open/close dehumidification devices.
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    Interesting, but only an abstract... do you have the full paper ?
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    Not yet. There is also some other nice mechanism of wheat awns and how they use changes in humidity to anchor in soil. Would maybe fit with the above mentioned work of oisin.
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