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jcunha

Trends in Biomimetics - 0 views

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    "The field of biomimicry mostly involves chemists, engineers and materials scientists. Fewer than 8% of the nearly 300 studies on biomimetics published in the past 3 months and indexed in the Thomson Reuters Web of Science had an author working in a biology department - a crude proxy for 'a biologist'."
jcunha

Bioelectrochemical cells - producing power via photosynthesis - 4 views

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    Nature paper showing a new photo-bioelectrochemical cell with a new photon-driven biocatalytic fuel cell method achieving electrical power generation from solar energy.
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    do you have the pdf?
Guido de Croon

New theory allows drones to see distances with one eye - 2 views

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    Inspired by the work that was done at the ACT, I continued working on optical flow landing at TU Delft. Today Bio & Bio published my article on a new theory that allows drones to see distances with a single camera. It shows that drones approaching an object with an insect-inspired vision strategy become unstable at a specific distance from the object. Turning this weakness into a strength, drones can actually use the timely detection of that instability to estimate distance. The new theory will enable further miniaturization of autonomous drones and provides a new hypothesis on flying insect behavior.

    Video: https://www.youtube.com/watch?v=Fm7SMJp8EA4&feature=youtu.be
    Article: http://iopscience.iop.org/article/10.1088/1748-3190/11/1/016004
jcunha

The physics of life - 2 views

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    Research in active-matter systems is a growing field in biology. It consists in using theoretical statistical physics in living systems such as molecule colonies to deduce macroscopic properties. The aim and hope is to understand how cells divide, take shape and move on these systems.
    Being a crossing field between physics and biology "The pot of gold is at the interface but you have to push both fields to their limits." one can read
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    Maybe we should discuss about this active matter one of these days?

    "These are the hallmarks of systems that physicists call active matter, which have become a major subject of research in the past few years. Examples abound in the natural world - among them the leaderless but coherent flocking of birds and the flowing, structure-forming cytoskeletons of cells. They are increasingly being made in the laboratory: investigators have synthesized active matter using both biological building blocks such as microtubules, and synthetic components including micrometre-scale, light-sensitive plastic 'swimmers' that form structures when someone turns on a lamp. Production of peer-reviewed papers with 'active matter' in the title or abstract has increased from less than 10 per year a decade ago to almost 70 last year, and several international workshops have been held on the topic in the past year."
Nina Nadine Ridder

Scientists teach bacterium a new trick for artificial photosynthesis - 1 views

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    Berkeley Lab researchers are using M. thermoacetica to perform photosynthesis - despite being non-photosynthetic - and also to synthesize semiconductor nanoparticles in a hybrid artificial photosynthesis system for converting sunlight into valuable chemical products.
Nina Nadine Ridder

Can physical exercise enhance long-term memory? - 1 views

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    Exercise can enhance the development of new brain cells in the adult brain, a process called adult neurogenesis. These newborn brain cells play an important role in learning and memory. A new study has determined that mice that spent time running on wheels not only developed twice the normal number of new neurons, but also showed an increased ability to distinguish new objects from familiar objects.
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    wow ... time to start running again ...
jcunha

Chicken study reveals evolution can happen much faster than thought - 2 views

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    "A new study of chickens overturns the popular assumption that evolution is only visible over long time scales. By studying individual chickens that were part of a long-term pedigree, the scientists led by Professor Greger Larson at Oxford University's Research Laboratory for Archaeology, found two mutations that had occurred in the mitochondrial genomes of the birds in only 50 years."
Ma Ru

Dutch cyclists have longer lives say researchers - 0 views

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    It's official. But note the clause: *Dutch* cyclists...
jcunha

Chemical analysis in Earth and Space via Raman Spectroscopy - 2 views

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    "A new lightweight, energy-efficient tool for analyzing a material's chemical makeup could improve the detection abilities of various technologies, ranging from bomb-detecting drones to space rovers searching for signs of life".

    Raman Spectroscopy is about measuring vibrational modes in molecules. This vibrational modes are in the meV typically, turning Raman Spectroscopy into a high precision technique. This impressive work shows a new technique based on the use of optical fibers coupled to photomultipliers allowing its use, author's word, in extreme conditions such as unmanned aircraft vehicles (UAVs) and Mars/Moon rovers.
Nina Nadine Ridder

Sentinel-2 catches eye of algal storm - 0 views

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    The Sentinel-2A satellite has been in orbit for only a matter of weeks, but new images of an algal bloom in the Baltic Sea show that it is already exceeding expectations. Built essentially as a land monitoring mission, Sentinel-2 will also certainly find its way into marine applications.
jcunha

New frequency record breaking laser in the X-ray - 0 views

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    Good news for the imaging community: simpler and smaller x-ray sources are on the way.
Nina Nadine Ridder

Methanotrophs: Could bacteria help protect our environment? - 0 views

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    New method for geoengineering?

    New insight into methanotrophs, bacteria that can oxidise methane, may help us develop an array of biotechnological applications that exploit methane and protect our environment from this potent greenhouse gas. Publishing in Nature, scientists led by Newcastle University have provided new understanding of how methanotrophs are able to use large quantities of copper for methane oxidation.
Nina Nadine Ridder

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

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    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

Introducing A Brain-inspired Computer [IBM TrueNorth] - 0 views

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    Built in Silicon technology (Samsung's 28 nm process), its power is measured as one million neurons and 256 million synapses. It contains 5.4 million transistor being the largest IBM chip in these terms. All this said, it consumes less than 100 mW!!

    "These systems can efficiently process high-dimensional, noisy sensory data in real time, while consuming orders of magnitude less power than conventional computer architectures." IBM is working with initLabs to integrate the DVS retinal camera with these chips = real time image neuro-like image processing.

    In what seems to be a very successful project hugely funded by DARPA, "Our sights are now set high on the ambitious goal of integrating 4,096 chips in a single rack with 4 billion neurons and 1 trillion synapses while consuming ~4kW of power."
Nina Nadine Ridder

Surprising similarity in fly and mouse motion vision - 2 views

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    Loosely related to an old ACT project on optical flow (if I remember correctly but even if not still an interesting read I think):

    "At first glance, the eyes of mammals and those of insects do not seem to have much in common. However, a comparison of the neural circuits for detecting motion shows surprising parallels between flies and mice. Scientists have learned a lot about the visual perception of both animals in recent years."
Nina Nadine Ridder

Why is life left-handed? The answer is in the stars - 2 views

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    While most humans are right-handed, our proteins are made up of lefty molecules. In the same way your left and right hands mirror one another, molecules can assemble in two reflected structures. Life prefers the left-handed version, which is puzzling since both mirrored types form equally in the laboratory.
Paul N

Animal brains connected up to make mind-melded computer - 2 views

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    Parallel processing in computing --- Brainet

    The team sent electrical pulses to all four rats and rewarded them when they synchronised their brain activity. After 10 training sessions, the rats were able to do this 61 per cent of the time. This synchronous brain activity can be put to work as a computer to perform tasks like information storage and pattern recognition, says Nicolelis. "We send a message to the brains, the brains incorporate that message, and we can retrieve the message later," he says.

    Dividing the computing of a task between multiple brains is similar to sharing computations between multiple processors in modern computers,
    "If you could collaboratively solve common problems [using a brainet], it would be a way to leverage the skills of different individuals for a common goal."
jcunha

Where Life Meets Light: Bio-Inspired Photonics - 0 views

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    Octopus and optoelectronics camouflage, light bugs and LEDs, or spider webs and touch screens, ... a whole cool bunch of biomimetic stuff
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    See also the referred work "Light-extraction enhancement for light-emitting diodes: a firefly-inspired structure refined by the genetic algorithm" - quite cool!
    https://pure.fundp.ac.be/portal/files/11946897/paper89.pdf
Thijs Versloot

Using nature to grow batteries - 1 views

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    Somewhat older talk from 2011 on using viruses to grow batteries.
Dario Izzo

Study maps extroversion types in the brain's anatomy - 7 views

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    Anna will rule the world!!!!
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    So... start preparing to be required to attach your brain scan along with your job application...
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