science + technology news

Green tea extract blocks formation of amyloid plaques in Alzheimer’s disease

March 8, 2013

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Researchers at the University of Michigan have found a new potential benefit of a molecule in green tea: preventing the misfolding of specific proteins in the brain.

U-M Life Sciences Institute faculty member Mi Hee Lim and an interdisciplinary team of researchers used green tea extract to control the generation of metal-associated amyloid-β aggregates associated with Alzheimer’s disease in the lab.

The specific molecule… read more

Continued destruction of Earth’s plant life places humankind in jeopardy, say researchers

July 15, 2015

Earth-space battery. The planet is a positive charge of stored chemical energy (cathode) in the form of fossil and nuclear fuels and biomass. As this energy is dissipated by humans, it eventually radiates as heat toward the chemical equilibrium of deep space (anode). The battery is rapidly discharging without replenishment. (credit: John R. Schramski et al./PNAS)

Unless humans slow the destruction of Earth’s declining supply of plant life, civilization like it is now may become completely unsustainable, according to a paper published recently by University of Georgia researchers in the Proceedings of the National Academy of Sciences.

“You can think of the Earth like a battery that has been charged very slowly over billions of years,” said the study’s lead author,… read more

Google Glass patent applications: bone conduction, laser-projected keyboard, more

January 29, 2013

laser-projected keyboard.-featured

Recent patent applications related to Google Glass are providing insight into the hardware behind the Glasses.

Bone conduction for covert audio. This would allow more privacy so that no one can overhear a conversation; a vibration transducer allows the technology to work without a direct connection. U.S. patent application

 

A laser projector can be used to project an interface onread more

Robot learns to use tools by ‘watching’ YouTube videos

January 2, 2015

"Hmmm, I can do that." Robot watches videos to detect objects and how to grasp them (credit: Yezhou Yang et al.)

Imagine a self-learning robot that can enrich its knowledge about fine-grained manipulation actions (such as preparing food) simply by “watching” demo videos. That’s the idea behind a new robot-training system based on recent developments of “deep neural networks” in computer vision, developed by researchers at the University of Maryland and NICTA in Australia.

The objective of the system is to improve performance, improving on previous automated robot-training systems such… read more

Tools of modern gunmaking: plastic and a 3D printer

February 1, 2013

30 round magazine opened in FreeCAD (credit: Distributed Defense)

Representative Steve Israel, Democrat of New York wants to extend an existing law, set to expire this year, that makes weapons that are undetectable by security scanners — like a printed all-plastic gun — illegal, The New York Times reports.

But there are also major technical obstacles to creating an entire gun on a 3-D printer, not the least of which is that a plastic gun would… read more

FDA orders 23andMe to halt sales of its its Saliva Collection Kit and Personal Genome Service

November 26, 2013

(Credit: 23 And Me

The FDA has told 23andMe, Inc., the Google-backed DNA analysis company cofounded by Anne Wojcicki, to halt sales of its Saliva Collection Kit and Personal Genome Service (PGS).

In a letter, the FDA said the company was acting “without marketing clearance or approval in violation of the Federal Food, Drug and Cosmetic Act (the FD&C Act)….”

“Most of the intended uses for PGS listed on your… read more

A 3D-printed Moon base baked from lunar dust

March 20, 2013

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Space architects have unveiled a concept for a 3D-printed Moon base called SinterHab near the lunar south pole. Modules would be constructed from lunar dust by microwave sintering and contour crafting, built by a large NASA spider robot.

Unlike an earlier, more bulky concept using a mobile printing array of nozzles on a 6 meter frame to spray a binding solution (glue) onto… read more

Apple’s first AI paper focuses on creating ‘superrealistic’ image recognition

December 28, 2016

Simulated+Unsupervised learning ft

Apple’s first paper on artificial intelligence, published Dec. 22 on arXiv (open access), describes a method for improving the ability of a deep neural network to recognize images.

To train neural networks to recognize images, AI researchers have typically labeled (identified or described) each image in a dataset. For example, last year, Georgia Institute of Technology researchers developed a deep-learning method to recognize images taken at regular… read more

Blue Brain project accurately predicts connections between neurons

September 18, 2012

Patterning of putative synapses between synaptically coupled neurons (credit: EPFL)

In a landmark paper, published this week in PNAS (forthcoming), the EPFL’s Blue Brain Project (BBP) has identified key principles that determine synapse-scale connectivity by virtually reconstructing (in supercomputer) a cortical microcircuit and comparing it to a mammalian sample.

These principles now make it possible to predict the locations of synapses in the neocortex, the researchers say.

“This is a major breakthrough,… read more

Non-invasive brain-to-brain interface: links between two brains

Direct communication between the brains of human and rat .... or between humans
April 8, 2013

brainstorm

We reported last month how Duke University researchers remotely linked the brains of two rats. Now researchers from the U.S and South Korea have have taken it a step further: a non-invasive functional link between the brains of different species (human and rat) — a brain-to-brain interface (BBI).

Researchers at Brigham and Women’s Hospital and Harvard Medical School set up a system intended to allow a human to… read more

3D printed meat development funded

August 17, 2012

modern_meadow_meat

Billionaire investor Peter Thiel’s philanthropic foundation has announced a six-figure grant for bioprinted meat, part of an ambitious plan to bring to the world’s dinner tables a set of technologies originally developed for creating medical-grade tissues, CNET reports.

The recipient of the Thiel Foundation’s grant, a Columbia, Mo.-based startup named Modern Meadow, is pitching bioprinted meat as a more environmentally-friendly way to satisfy… read more

The cosmological supercomputer

How the Bolshoi simulation evolves the universe all over again
October 3, 2012

cosmic_web

Most of the ordinary matter in the universe — the stuff that makes up all the atoms, stars, and galaxies astronomers can see — is invisible, either sprinkled throughout intergalactic space in tenuous forms that emit and absorb little light or else swaddled inside galaxies in murky clouds of dust and gas, Joel R. Primack writes in IEEE Spectrum.

When astronomers look out into the night… read more

A bucket-full of this material can absorb all the oxygen in a room

The stored oxygen can be easily released again whenever and wherever needed
October 1, 2014

This exotic crystalline material changes color when absorbing or releasing oxygen. Crystals are black when saturated with oxygen and pink when the oxygen has been released. (Credit: University of Southern Denmark)

A new crystalline material absorbs 160 times more oxygen than in the air around you — only a spoonful bucket-full (10 liters) of it is enough to suck up all the oxygen in a room, according to its developer, Professor Christine McKenzie in the Department of Physics, Chemistry and Pharmacy at the University of Southern Denmark.

A few grains of this material might absorb enough oxygen from the… read more

Replacing a defective gene with a correct sequence to treat genetic disorders

April 10, 2014

NewsImage-GeneRepair

Using a new gene-editing system based on bacterial proteins, MIT researchers have cured mice of a rare liver disorder caused by a single genetic mutation.

The findings, described in the March 30 issue of Nature Biotechnology, offer the first evidence that this gene-editing technique, known as CRISPR, can reverse disease symptoms in living animals. CRISPR, which offers an easy way to snip out mutated DNA and replace it with… read more

Tesla Autopilot predicts collision ahead seconds before it happens

Before visible signs of trouble
December 30, 2016

Tesla autopilot predicts

Hans Noordsij, a Dutch Tesla driver, uploaded a Dec. 27 dashcam video that dramatically shows the new radar processing capacity of Tesla’s Autopilot and resulting auto-breaking, DarkVision Hardware reports. The system’s radar saw ahead of the car in front and tracked two cars ahead on the road. Note the audible warning a second or so before the accident.

pic.twitter.com/70MySRiHGR

December 27, 2016

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