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Tom Gheysens

Computing with silicon neurons: Scientists use artificial nerve cells to classify diffe... - 1 views

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    Scientists in Germany are using artificial nerve cells to classify different types of data. These silicon 'neurons' could recognize handwritten numbers, or distinguish plant species based on their flowers.
santecarloni

Three-Dimensional Plasmon Rulers - 0 views

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    "Plasmon rulers can be used to determine nanoscale distances within chemical or biological species. They are based on the spectral shift of the scattering spectrum when two plasmonic nanoparticles approach one another.... We demonstrated a three-dimensional plasmon ruler that is based on coupled plasmonic oligomers in combination with high-resolution plasmon spectroscopy. This enables retrieval of the complete spatial configuration of complex macromolecular and biological processes as well as their dynamic evolution."
fichbio

A 3D bioprinting - 5 views

http://www.nature.com/nbt/journal/vaop/ncurrent/full/nbt.3413.html#access Amazing things happen, development of 3D bioprinting technology opens a new era in restoring people after serious injuries...

Biotechnology bioengineering transhumanism

started by fichbio on 17 Feb 16 no follow-up yet
Alexander Wittig

Nature Today | First tomatoes and peas harvested on Mars and moon soil simulant - 2 views

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    Researchers from Alterra Wageningen UR were able to grow and harvest ten different crop species on Mars and moon simulant. 'The total above ground biomass produced on the Mars soil simulant was not significantly different from the potting compost we used as a control' researcher Wieger Wamelink said. I wonder if the taste was as disappointing as that of normal dutch veggies :P
johannessimon81

Innovative Birds Are Also Less Flexible Learners - 1 views

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    Innovative individuals are less flexible learners while innovative species are also at the same time more flexible.
johannessimon81

Smelly cuckoos protect hosts' chicks from predators - 0 views

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    "Cuckoos have a bad reputation as home-wreckers, taking over the nests of other birds and killing their chicks. But one species benefits its hosts by producing a smelly fluid that repels predators. "Cuckoos are not always the villains we think they are," says Ros Gloag of the University of Sydney, who was not involved in the study."
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    So they not only take over part of the nest, but also crap all over the place? Then again, if that is the prize to pay for safety, it might well be worth the inconvenience.. :)
johannessimon81

Weather patterns on Exoplanet detected - 1 views

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    so it took us 70% of the time Earth is in the habitable zone to develop, would this be normal or could it be much faster? In other words, would all forms of life that started on a planet that originated at a 'similar' point in time like us, be equally far developed?
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    That is actually quite tricky to estimate rly. If for no other reason than the fact that all of the mass extinctions we had over the Earth's history basically reset the evolutionary clock. Assuming 2 Earths identical in every way but one did not have the dinosaur wipe-out impact, that would've given non-impact Earth 60million years to evolve a potential dinosaur intelligent super race.
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    The opposite might be true - or might not be ;-). Since usually the rate of evolution increases after major extinction events the chance is higher to produce 'intelligent' organisms if these events happen quite frequently. Usually the time of rapid evolution is only a few million years - so Earth is going quite slow. Certainly extinction events don't reset the evolutionary clock - if they would never have happened Earth gene pool would probably be quite primitive. By the way: dinosaurs were a quite diverse group and large dinosaurs might well have had cognitive abilities that come close to whales or primates - the difference to us might be that we have hands to manipulate our environment and vocal cords to communicate in very diverse ways. Modern dinosaur (descendents), i.e. birds, contain some very intelligent species - especially with respect to their body size and weight.
Thijs Versloot

Stimulated mutual annihilation: How to make a gamma-ray laser with positronium - 1 views

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    Theorists expect that positronium, a sort of 'atom' consisting of an electron and an anti-electron, can be used to make a powerful gamma-ray laser. Scientists now report detailed calculations of the dynamics of a positronium BEC. This work is the first to account for effects of collisions between different positronium species.
Marcus Maertens

Why Is This Giraffe Gnawing On An Impala Skull? - 3 views

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    Omg - they will not only murder you, but also suck on your bones.
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    Marcus, might be up your street? http://www.giraffobia.com/news.htm
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    Fantastic! Although my recent encounters with the species helped me control my giraffobia...
jcunha

Portable ultra-broadband lasers could be key to next-generation sensors - 0 views

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    Quantum Cascade Lasers are rising in the mid-infrared region, the so-called fingerprint zone of the electromagnetic spectrum for a whole bunch of chemical species that we are most of times interested in sensing. One more sign of the underlying importance of this technology comes just by seeing NSF, USHS, Naval Air Command and NASA as the main monetary contributors to this research.
Joris _

Tracking Whale Sharks With Astronomical Algorithms | Wired Science | Wired.com - 3 views

  • equations were developed for astronomers using the Hubble telescope, Holmberg’s crew adapted them for biologists studying Earth’s biggest fishes
  • Holmberg also hopes that other programmers will follow his lead and lend their coding skills to worthy projects. “Pick the species or concern you’re most passionate about, pick the researchers who are working on it, and identify their technical needs,” he said. “I’m not even a great programmer. I’m underqualified but highly productive
nikolas smyrlakis

Google Algorithm Predicts When Species Will Go 404, Not Found | Wired Science | Wired.com - 0 views

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    Biologists have figured out the most efficient way to destroy an ecosystem - and it's based on the Google search algorithm. Scientists have long
Juxi Leitner

Darwin's - 0 views

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    An international team of biochemists have discovered evidence at the molecular level in support of one of the key tenets of Darwin's theory of evolution that provides a blueprint for a general understanding of the evolution of the "machinery" of...
Joris _

The Origin of Artificial Species: Creating Artificial Personalities - 0 views

  • The first artificial creature to receive the genomic personality is Rity, a dog-like software character that lives in a virtual 3D world in a PC
  • In Rity, internal states such as motivation, homeostasis and emotion change according to the incoming perception
  • The internal control architecture processes incoming sensor information, calculates each value of internal states as its response, and sends the calculated values to the behavior selection module to generate a proper behavior.
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    they have found Christina's dog !!
Thijs Versloot

A Groundbreaking Idea About Why Life Exists - 1 views

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    Jeremy England, a 31-year-old assistant professor at the Massachusetts Institute of Technology, has derived a mathematical formula that he believes explains this capacity. The formula, based on established physics, indicates that when a group of atoms is driven by an external source of energy (like the sun or chemical fuel) and surrounded by a heat bath (like the ocean or atmosphere), it will often gradually restructure itself in order to dissipate increasingly more energy. This could mean that under certain conditions, matter inexorably acquires the key physical attribute associated with life. The simulation results made me think of Jojo's attempts to make a self-assembling space structure. Seems he may have been on the right track, just not thinking big enough
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    :-P Thanks Thijs... I do not agree with the premise of the article that a possible correlation of energy dissipation in living systems and their fitness means that one is the cause for the other - it may just be that both go hand-in-hand because of the nature of the world that we live in. Maybe there is such a drive for pre-biotic systems (like crystals and amino acids), but once life as we know it exists (i.e., heredity + mutation) it is hard to see the need for an amendment of Darwin's principles. The following just misses the essence of Darwin: "If England's approach stands up to more testing, it could further liberate biologists from seeking a Darwinian explanation for every adaptation and allow them to think more generally in terms of dissipation-driven organization. They might find, for example, that "the reason that an organism shows characteristic X rather than Y may not be because X is more fit than Y, but because physical constraints make it easier for X to evolve than for Y to evolve." Darwin's principle in its simplest expression just says that if a genome is more effective at reproducing it is more likely to dominate the next generation. The beauty of it is that there is NO need for a steering mechanism (like maximize energy dissipation) any random set of mutations will still lead to an increase of reproductive effectiveness. BTW: what does "better at dissipating energy" even mean? If I run around all the time I will have more babies? Most species that prove to be very successful end up being very good at conserving energy: trees, turtles, worms. Even complexity of an organism is not a recipe for evolutionary success: jellyfish have been successful for hundreds of millions of years while polar bears are seem to be on the way out.
Thijs Versloot

Bio-Derived Porous Carbon Anodes for Li-ion Batteries #Nature - 3 views

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    Here we explore the electrochemical performance of pyrolyzed skins from the species A. bisporus, also known as the Portobello mushroom, as free-standing, binder-free, and current collector-free Li-ion battery anodes. At temperatures above 900 °C, the biomass-derived carbon nanoribbon-like architectures undergo unique processes to become hierarchically porous. Basically they burned a Portobello mushroom and used it as a battery... now thats an multidisciplinary advanced concept
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