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LeopoldS

Plant sciences: Plants drink mineral water : Nature : Nature Publishing Group - 1 views

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    Here we go: we might not need liquid water after all on mars to get some nice flowering plants there! ... and terraform ? :-) Thirsty plants can extract water from the crystalline structure of gypsum, a rock-forming mineral found in soil on Earth and Mars.

    Some plants grow on gypsum outcrops and remain active even during dry summer months, despite having shallow roots that cannot reach the water table. Sara Palacio of the Pyrenean Institute of Ecology in Jaca, Spain, and her colleagues compared the isotopic composition of sap from one such plant, called Helianthemum squamatum (pictured), with gypsum crystallization water and water found free in the soil. The team found that up to 90% of the plant's summer water supply came from gypsum.

    The study has implications for the search for life in extreme environments on this planet and others.

    Nature Commun 5, 4660 (2014)
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    Very interesting indeed. Attention is to be put on the form of calcium sulfate that is found on Mars. If it is hydrated (gypsum Ca(SO4)*2(H2O)) it works, but if it is dehydrated there is no water for the roots to take in. The Curiosity Rover tries to find out, but has uncertainty in recognising the hydrogen presence in the mineral: Copying : "(...) 3.2 Hydration state of calcium sulfates Calcium sulfates occur as a non-hydrated phase (anhydrite, CaSO4) or as one of two hydrated phases (bassanite, CaSO4.1/2H2O, which can contain a somewhat variable water content, and gypsum, CaSO4.2H2O). ChemCam identifies the presence of hydrogen at 656 nm, as already found in soils and dust [Meslin et al., 2013] and within fluvial conglomerates [Williams et al., 2013]. However, the quantification of H is strongly affected by matrix effects [Schröder et al., 2013], i.e. effects including major or even minor element chemistry, optical and mechanical properties, that can result in variations of emission lines unrelated to actual quantitative variations of the element in question in the sample. Due to these effects, discriminating between bassanite and gypsum is difficult. (...)"
Thijs Versloot

Record #Laser data transmission to the #moon achieved 622Mbps - 1 views

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    Oct. 22, 2013 NASA Laser Communication System Sets Record with Data Transmissions to and from Moon NASA's Lunar Laser Communication Demonstration (LLCD) has made history using a pulsed laser beam to transmit data over the 239,000 miles between the moon and Earth at a record-breaking download rate of 622 megabits per second (Mbps).
Alexander Wittig

SpaceX founder files with government to provide Internet service from space - 0 views

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    Elon Musk is moving forward with space based internet service...
  • ...3 more comments...
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    reading the qz article, it is not clear to me that google dropped out as one of the main investors in SpaceX? did I miss something?
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    I attended a presentation by H. Hemmati, formerly at NASA's JPL, now at Facebook working to "connect the unconnected" during a panel session of the Workshop "Shining light on future space optical communications". I gather that they are targeting a combined strategy of HAP (with solar powered planes at 20-25 km), balloons and satellites. The rationale behind is that each solution is best suited for different population density zones, i.e. satellites while expensive (total cost of 100MUSD after Hemmati) are the only way to provide internet in remote zones, while balloons seem to be one inexpensive solution for densely populated areas. Funfact: he mentioned that the main drawback will be some crashes of HAP elements...
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    Facebook announced they are ready to test of of their High Altitude Platform element, a drone of the size of a Boeing 737. See the new here http://phys.org/news/2015-07-facebook-ready-giant-drone-internet.html?utm_source=nwletter&utm_medium=email&utm_content=ctgr-item&utm_campaign=daily-nwletter. It seemed interesting for me that they are developing also a reliable optical communication between this element and scattered ground stations.
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    Nice link, that thing is huge and I would love to see a drone that size fly. Also, Facebook's Aerospace Team? :)
Juxi Leitner

'Time telescope' could boost fibre-optic communication - tech - 28 September 2009 - New... - 0 views

  • "A time lens is essentially like an optical lens," says Foster. An optical lens can deflect a light beam into a much smaller area of space; a time lens deflects a section of a light beam into a smaller chunk of time.
nikolas smyrlakis

BBC News - European space missions given cost warning - 1 views

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    Cosmic Vision missions, some of which to be selected before the end of 2011.. Favorite phrase: "Mindful of the recent criticism the agency has received from member states on the issue of cost overruns, Professor David Southwood, Esa's director of science and robotics, told the teams: "Industry and the science community need to get to work on this; it's a collective responsibility."" :-> reference class forecasting!
Nina Nadine Ridder

-- Press Releases December 2009 ... - 2 views

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    The view from space showing the impact of global warming in a European Atlas of Environmental Change and Climate Communities
LeopoldS

element14: Home | Electronic Engineering Solutions for the Design Engineer Community - 0 views

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    interesting portal ... though of limited use for ACT at first view ....
Tobias Seidl

Evidence for grid cells in a human memory network : Article : Nature - 2 views

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    This is the community that states mammals have cognitive maps. Good work, especially by the Moser-couple.
nikolas smyrlakis

DIME | Dynamics of Institutions and Markets in Europe - 4 views

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    an active and open community for whoever interested and the new YGTs RFs in Innovation/ Economics/ CMS etc.
LeopoldS

Why Humans Have Sex | The New York Academy of Sciences - 4 views

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    nice podcast ... ESTEC YGT community might be an interesting study pool ....
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    haha ;) I dunno what the general idea of the YGTs here at ESTEC is ;)
Juxi Leitner

A Cyborg Space Race - 1 views

  • There is more discussion in the space community on how to alter entire planets to suit humans - a process called "terraforming" - than there is on changing man to suit space.
  • making the machines our "avatars" for space exploration
  • Perhaps a brain implant linking us to our robots would be the next step in space exploration, greatly reducing communication time across the vast expanse of space
LeopoldS

The Army's Bold Plan to Turn Soldiers Into Telepaths | Machine-Brain Connections | DISC... - 0 views

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    "The mind reader is Gerwin Schalk, a 39-year-old biomedical scientist and a leading expert on brain-computer interfaces at the New York State Department of Health's Wads­worth Center at Albany Medical College. The 28Austrian-born Schalk, along with a handful of other researchers, is part of a $6.3 million U.S. Army project to establish the basic science required to build a thought helmet-a device that can detect and transmit the unspoken speech of soldiers, allowing them to communicate with one another silently." ...
Kevin de Groote

Cell Beta Prototypes - 0 views

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    Cell Press and Elsevier have launched a project called Article of the Future that is an ongoing collaboration with the scientific community to redefine how the scientific article is presented online....
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    well - none of the two examples that they have given show much imagination - don't think that any of these will be better than just using the full screen pdf, my preferred way after printing and reading on paper ... btw: Kevin: are you still around? could we meet?
ESA ACT

Half Bakery - 0 views

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    The Halfbakery is a communal database of original, fictitious inventions, edited by its users. It was created by people who like to speculate, both as a form of satire and as a form of creative expression.
ESA ACT

STIX Fonts - General Information - 0 views

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    First time I heard about this relevant project. In brief: The mission of the Scientific and Technical Information Exchange (STIX) font creation project is the preparation of a comprehensive set of fonts that serve the scientific and engineering community
ESA ACT

Smartlighting ERC | Free space communications | Photonics | LED | Wireless | CISE | BU - 0 views

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    application for space? maybe ISS? -LS
ESA ACT

The world's 23 toughest math questions | NetworkWorld.com Community - 0 views

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    Let's see if we can rise to the challenge... MR - Riemann Hypothesis still there... classic :)
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