Twisting the light away using ultrasmall holes


A new study shows that light transmitted through apertures smaller than the wavelength of light go through a radical change, splitting into two symmetrical counter-rotating polarisations.


News Release June 20 2014 Macquarie University

 

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Astronomers pierce galactic clouds to shed light on black hole development


 

BLACKSBURG, Va., June 20, 2014 – An international team of scientists including a Virginia Tech physicist have discovered that winds blowing from a supermassive black hole in a nearby galaxy work to obscure observations and X-rays.

The discovery in Thursday’s issue of Science Express sheds light on the unexpected behavior of black holes, which emit large amounts of matter through powerful, galactic winds.

Using a large array of satellites and space observatories, the team spent more than a year training their instruments on the brightest and most studied of the “local” black holes — the one situated at the core of Type I Seyfert Galaxy NGC 5548.

What they found was a bit of a surprise.

 


 

Article June 20, 2014 Virginia Tech

 

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Spitzer Spies an Odd, Tiny Asteroid


Astronomers using NASA’s Spitzer Space Telescope have measured the size of an asteroid candidate for NASA’s Asteroid Redirect Mission (ARM), a proposed spacecraft concept to capture either a small asteroid, or a boulder from an asteroid. The near-Earth asteroid, called 2011 MD, was found to be roughly 20 feet (6 meters) in size, and its structure appears to contain a lot of empty space, perhaps resembling a pile of rubble. Spitzer’s infrared vision was key to sizing up the asteroid.

 


 

 

News Release June 19, 2014 NASA Jet Propulsion Laboratory

 

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Scientists Take First Dip into Water’s Mysterious ‘No Man’s Land’


Menlo Park, Calif. — Scientists at the Department of Energy’s SLAC National Accelerator Laboratory have made the first structural observations of liquid water at temperatures down to minus 51 degrees Fahrenheit, within an elusive “no man’s land” where water’s strange properties are super-amplified.


 

News Release June 18, 2014 SLAC National Accelerator Laboratory

 

 

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A sharper image of the earth’s structure


Today, thanks to earthquakes, we know fairly accurately how the solid earth is constructed. Geophysicist Andreas Fichtner is now taking things a step further: he gains new insights into our planet’s interior from seemingly useless data.


 

Research News June 18, 2014 By Felix Würsten ETH Zurich

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Modelling how neurons work together


A highly accurate model of how neurons behave when performing complex movements could aid in the design of robotic limbs which behave more realistically.

 



Accurate models like these can really aid in the understanding of the incredibly complex dynamics at work in the human brain

Guillaume Hennequin


 

Research News June 18, 2014 University of Cambridge

 

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Taking pictures with protons


 

A new facility for using protons to take microscopic images has been commissioned at the ring accelerator of the GSI Helmholtzzentrum für Schwerionenforschung GmbH in Germany.


U.S., German, Russian collaboration conducts first experiments in Germany


“Combining the experience of this international collaboration has proven to be very productive,”
said Frank Merrill.


 

 

News Release June 17, 2014 Los Alamos National Laboratory

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Not so fast – our fishy friends can also feel pain


Review of mental ability shows fish are on par with most animals

Αξιολόγηση των νοητικών ικανοτήτων των ψαριών τα εντάσσει στο ίδιο επίπεδο με τα περισσότερα ζώα.

Αν πιστεύουμε ότι τα ψάρια δεν νοιώθουν πόνο ή δεν ενδιαφέρονται για το πως τους φερόμαστε όταν τα πιάνουμε, θα πρέπει να αναθεωρήσουμε σύμφωνα με τον επικ. Καθηγητή Culum Brown, στο πεδίο των Νοητικών Επιστημών που ερευνά την αντίληψη των ζώων. 


 

News release June 19, 2014 Macquarie University

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Gums Under Attack


Tufts researchers investigate stress as a potential cause of periodontal disease

Το άγχος ως πιθανό αίτιο της περιοδοντικής νόσου, εξετάζεται από ερευνητές στο πανεπιστήμιο Tufts

 

 


 

Article By Michael Blanding June 13, 2014 Tufts University

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A Tale of Two Sexes


This year, for the first time ever, two of the largest neuroscience societies are led by a female scientist: the Society for Neuroscience (SfN), with nearly 42,000 members, and the Federation of European Neuroscience Societies (FENS), which represents more than 22,000 neuroscientists in 42 member societies across Europe. While the SfN has a history of female presidents, 9 out of 45, FENS welcomed its first female president only recently. Why do women move so slowly through the ranks of the system and why is it important that they do so? More urgently, what can be done to change this and by whom? Here we address current challenges and recommend concrete actions.


Read through Neuron (click on thumbnail)

Marian Joëls, Carol Mason

DOI: http://dx.doi.org/10.1016/j.neuron.2014.05.021

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Today is the future of yesterday


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Over the past 10 years, Scopus has established itself as a leading abstract and indexing database for researchers pursuing the latest scientific breakthroughs. For many, Scopus is their first choice for a global view on the world of research.

Take a look at the last 10 years of scientific breakthroughs, see what Scopus has been up to, and watch how our team imagines tomorrow.

 


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Network Plasticity in Adaptive Filtering and Behavioral Habituation


Network Plasticity in Adaptive Filtering and Behavioral Habituation

Abstract

The ability of organisms to seamlessly ignore familiar, inconsequential stimuli improves their selective attention and response to salient features of the environment. Here, I propose that this fundamental but unexplained phenomenon substantially derives from the ability of any pattern of neural excitation to create an enhanced inhibitory (or “negative”) image of itself through target-specific scaling of inhibitory inputs onto active excitatory neurons. Familiar stimuli encounter strong negative images and are therefore less likely to be transmitted to higher brain centers. Integrating historical and recent observations, the negative-image model described here provides a mechanistic framework for understanding habituation, which is connected to ideas on dynamic predictive coding. In addition, it suggests insights for understanding autism spectrum disorders.

 

 Video abstract

 


 

 

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DOI: 10.1016/j.neuron.2014.04.035

Volume 82, Issue 6, 18 June 2014

 


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