martes, 2 de agosto de 2011

Weekly edition

News and Blog Headlines
Someday your brain could brake for you
New NASA data challenges global warming alarmism
Graphene nanocomposite a bridge to better batteries
New tools accelerate mapping the brain’s connectome
World’s first ‘printed’ aircraft
Building a Subversive Grassroots Network
Bionic microrobot walks on water — perfect spybot, say Chinese scientists
How the brain’s ‘workspace’ allows multitasking
Piezotronics produces electrical signals from biomechanical actions
How aging affects working-memory neuron firing rate and how to improve it
Molecular cut and paste
Nano-sized drug transporter targets cancer-causing oncogenes more effectively
The world’s deadliest distinction: why aren’t the oldest living people getting any older?
Can we live forever? Kaku, Fahey, de Grey, Tipler on Science Channel
One-way sound transmission system allows for sound control, energy-harvesting
Artificial nose created with carbon-nanotube transistor and DNA
Brain ‘hears’ voices when reading direct speech
Sharper, deeper, faster optical imaging of live biological samples
Minority rules: scientists discover tipping point for the spread of ideas
Stelarc: Pushing the body’s boundaries
Another Earth
Touchscreen keyboard morphs to fit your typing style
Wolfram launches Computable Document Format (CDF) user-created interactive documents
Using glucose meters to measure other target molecules in blood, serum, water, or food
New graphene discovery brings practical devices closer
Oversight of animals containing human material in biomedical research
Researchers identify seventh and eighth bases of DNA
Tattoo tracks sodium and glucose via an iPhone
Robert Ettinger 1918 – 2011
Robots use Kinect to understand our world

Latest News
Someday your brain could brake for you
July 29, 2011 Source Link: Technology Review

 Electrical signals from the brain are seen 130 milliseconds before drivers actually hit the brakes, Technical University of Berlin researchers have found, as reported in the Journal of Neural Engineering. Seated facing three monitors in a driving simulator called The Open Source Racing Car Simulator, each subject was told to drive about 18 meters behind a … more…

New NASA data challenges global warming alarmism
July 29, 2011

 NASA satellite data show the Earth’s atmosphere is allowing far more heat to be released into space than alarmist computer models have predicted, according to a new study in the peer-reviewed science journal Remote Sensing. Data from NASA’s Terra satellite shows that when the climate warms, Earth’s atmosphere is apparently more efficient at releasing energy to … more…

Graphene nanocomposite a bridge to better batteries
July 29, 2011

 Researchers at the Lawrence Berkeley National Laboratory (Berkeley Lab) have created a graphene and tin nanoscale composite material for high-capacity energy storage in renewable lithium ion batteries. Electrochemical measurements showed very high reversible capacity and excellent cycling performance at a current density as high as 5 amperes per gram. Graphene is a single-atom-thick, “chicken-wire” lattice … more…

New tools accelerate mapping the brain’s connectome
July 29, 2011

 New software tools to reconstruct neural wiring diagrams quickly and accurately have been developed by researchers at the Max Planck Institute for Medical Research to allow neuroscientists to understand the structure of the brain’s circuits — the connectome. The researchers created two new computer programs, KNOSSOS (named for Crete’s legendary palace, renowned for its elaborate … more…

World’s first ‘printed’ aircraft
July 28, 2011

 Engineers at the University of Southampton have designed and flown the world’s first “printed” aircraft, which could revolutionize the economics of aircraft design, the engineers say. The SULSA (Southampton University Laser Sintered Aircraft) plane is an unmanned air vehicle (UAV), with its entire structure printed. This includes wings, integral control surfaces, and access hatches. It … more…

Building a Subversive Grassroots Network
July 28, 2011 Source Link: IEEE Spectrum

Shutting off digital communication is a new addition to the dictator’s tool kit. Fortunately, in a world full of hackers, technology is hard to control, even for autocrats. Hackers are creating a way for citizens to build their own communication networks from the ground up, using computers, cellphones, and wireless routers. Such networks — called … more…

Bionic microrobot walks on water — perfect spybot, say Chinese scientists
July 28, 2011

 A new aquatic microrobot that mimics the water-walking abilities of the water strider has been developed by researchers at the Harbin Institute of Technology in China. The robot is about the size of a quarter, with ten water-repellent, wire legs and two movable, oar-like legs propelled by two miniature motors. Because the weight of the … more…

How the brain’s ‘workspace’ allows multitasking
July 28, 2011

Cognitive neuroscientist Robert H. Logie at the University of Edinburgh has found that a “workspace” in the brain allows us to do something while other functions operate in the background or to apply ourselves to a single task involving more than one function, contrary to the “controlled attention” model. “We have a range of different … more…

Piezotronics produces electrical signals from biomechanical actions
July 28, 2011

 Georgia Institute of Technology researchers have demonstrated a new type of piezoelectric resistive switching device in which the write-read access of memory cells is controlled by electromechanical modulation. Operating on flexible substrates, arrays of these devices could provide a new way to interface the mechanical actions of the biological world to conventional electronic circuitry. These … more…

How aging affects working-memory neuron firing rate and how to improve it
July 28, 2011

 The neural networks in the brains of the middle-aged and elderly have weaker connections and fire less robustly than in youthful ones, Yale University researchers have found. “With normal aging, there are impairments in the working memory functions of the prefrontal cortex (PFC),” says Amy F. T. Arnsten, professor or neurobiology at Yale University Medical … more…

Nano-sized drug transporter targets cancer-causing oncogenes more effectively
July 28, 2011

Seeking to improve cancer treatments, Ohio State University scientists have created a tiny drug transporter (nanocarrier) design that maximizes its ability to silence damaging genes by more effectively penetrating a target cell. The researchers used small interfering RNA (siRNA), an important gene-regulation mechanism that has the potential to protect cells against invaders, such as viruses, … more…

The world’s deadliest distinction: why aren’t the oldest living people getting any older?
July 27, 2011 Source Link: Slate

 Raising the upper bounds of the human lifespan is turning out to be trickier than increasing the average person’s life expectancy. In the past few years, the global count of supercentenarians — people 110 and older — has leveled off at about 80. And the maximum age hasn’t budged. Just seven people whose ages could be … more…

Can we live forever? Kaku, Fahey, de Grey, Tipler on Science Channel
July 27, 2011

 “Can We Live Forever?” — Through the Worm Hole Season 2, narrated by Morgan Freeman — will air on Science Channel starting Wednesday, July 27, 10 p.m. Michio Kaku, Thermodynamics; Greg Fahey, Cryogenic Preservation;Aubrey de Grey, Forever Young; Frank Tipler, The Omega Point. “This popularization is an excellent contribution to convincing the newly arrived cognoscenti … more…

One-way sound transmission system allows for sound control, energy-harvesting
July 27, 2011

 Researchers at the California Institute of Technology (Caltech) have created the first tunable acoustic diode — a device that allows acoustic information to travel only in one direction, at controllable frequencies. The researchers used experiments, simulations, and analytical predictions to demonstrate one-way transmission of sound in an audible frequency range for the first time. This … more…

Artificial nose created with carbon-nanotube transistor and DNA
July 27, 2011

 Researchers at the University of Pennsylvania have developed a chemical sensor that combines a carbon nanotube transistor with olfactory receptor proteins, the cell components in the nose that detect odors. The sensor comprises a single-walled carbon nanotube field effect transistor (swCN-FET) with a nanoscale layer of single-stranded DNA (ssDNA) adsorbed to the tube’s outerwall. The … more…

Brain ‘hears’ voices when reading direct speech
July 27, 2011

When reading direct quotations, the brain “hears” the voice of the speaker, researchers at the University of Glasgow have found, using functional magnetic resonance imaging (fMRI). This shows that readers are likely to engage in perceptual simulations, or spontaneous imagery, of the reported speaker’s voice when reading direct speech, the researchers said. Ref.: Bo Yao, … more…

Sharper, deeper, faster optical imaging of live biological samples
July 26, 2011

 Researchers from the California Institute of Technology (Caltech) have developed a novel approach that could redefine optical imaging of live biological samples, simultaneously achieving high resolution, high penetration depth (for seeing deep inside 3D samples), and high imaging speed. The research team employed an unconventional imaging method called light-sheet microscopy: a thin, flat sheet of … more…

Minority rules: scientists discover tipping point for the spread of ideas
July 26, 2011

Scientists at Rensselaer Polytechnic Institute have found that when just 10 percent of the population holds an unshakable belief, their belief will always be adopted by the majority of the society. The scientists developed computer models of various types of social networks. One of the networks had each person connect to every other person in … more…

Stelarc: Pushing the body’s boundaries
July 26, 2011 Source Link: New Scientist CultureLab

Stelarc is a performance artist who explores the capabilities of the human body. “All of my projects explore alternate anatomical architectures — a body with a third hand, or an extra ear, or an artwork inside a bodily space instead of a public space,” he says. “We are biological bodies, but we are often accelerated, … more…

Another Earth
July 26, 2011

 If you could meet your other you, what would you say? That’s the core question in Another Earth, now playing. Rhoda Williams (Brit Marling), a bright young woman accepted into MIT’s astrophysics program, aspires to explore the cosmos. A brilliant composer, John Burroughs (William Mapother), has just reached the pinnacle of his profession and is … more…

Touchscreen keyboard morphs to fit your typing style
July 26, 2011 Source Link: New Scientist One Per Cent

 IBM recently filed a U.S. patent application for a morphing touchscreen keyboard interface that would automatically resize, reshape, and reposition keys based on a user’s typing style. IBM proposes a system that would alter the size, shape, and location of keys to suit an individual’s physical anatomy, such as finger size, length, and range of … more…

Wolfram launches Computable Document Format (CDF) user-created interactive documents
July 25, 2011

 Interactive demonstration of insulin molecule (credit: Wolfram Research) Wolfram Research has announced the Computable Document Format (CDF), a new standard to put interactivity at the core of everyday documents and empower readers with live content they can drive. CDF is a computation-powered knowledge container. Its interactivity isn’t just pre-generated, but live. And for the first time, … more…

Using glucose meters to measure other target molecules in blood, serum, water, or food
July 25, 2011

 Glucose meters can be used as simple, portable, inexpensive meters for a number of target molecules in blood, serum, water or food, researchers at the University of Illinois have found. To use glucose meters to detect a target other than glucose, the researchers coupled them with a class of molecular sensors called functional DNA sensors. Functional DNA … more…

New graphene discovery brings practical devices closer
July 25, 2011

 Interactions between electrons significantly enhance the already high velocity of electrons in graphene, researchers at The University of Manchester have found. They anticipate their findings will accelerate building graphene-based devices such as touchscreens, ultrafast transistors, and photodetectors. The researchers used extremely high-quality graphene devices, prepared by suspending sheets of graphene in a vacuum. This eliminated … more…

Oversight of animals containing human material in biomedical research
July 25, 2011

Researchers at the British Academy of Medical Sciences have examined the use of animals containing human material (ACHM) in biomedical research and identified areas of sensitivity including cognition, reproduction, or creating visual characteristics perceived as uniquely human. They have called for additional oversight to ensure innovative science can flourish within clearly defined ethical boundaries with public support. The working group … more…

Researchers identify seventh and eighth bases of DNA
July 25, 2011

 Researchers from the University of North Carolina (UNC) School of Medicine have identified the seventh and eighth bases of DNA. For decades, scientists have known that DNA consists of four basic units — adenine, guanine, thymine, and cytosine. In recent history, scientists have expanded that list from four to six. Much is known about the “fifth base,” … more…

Tattoo tracks sodium and glucose via an iPhone
July 25, 2011 Source Link: Technology Review

 Northeastern University researchers have developed a nanosensor “tattoo” with a modified iPhone that allows users to closely monitor sodium levels (to prevent dehydration), and glucose levels. The team injected a solution containing nanoparticles into the skin. This left no visible mark, but the nanoparticles fluoresced when exposed to a target molecule, such as sodium or glucose. A … more…

Robert Ettinger 1918 – 2011
July 24, 2011

 Robert Chester Wilson Ettinger, a pioneer transhumanist known as the “the father of cryonics,” was cryopreserved Saturday by the organization he founded, the Cryonics Institute. His 1962 book The Prospect of Immortality.and his 1972 book Man into Superman inspired many of us. “Robert Ettinger deanimated [Saturday]  at around 4 p.m. Eastern Time,” said Ben Best, … more…

Robots use Kinect to understand our world
July 22, 2011 Source Link: New Scientist Tech

Researchers at Cornell University are teaching robots to understand the context of their surroundings so that they can pick out individual objects in a room. Microsoft’s Kinect sensor perceives real-world 3-D scenes by combining two visible-light cameras with depth information from an infrared sensor. The researchers’ algorithm learns to recognize particular objects by studying images … more…
New BLOG POSTS
Molecular cut and paste
July 28, 2011 by William Mcewan

 A combination of cheap DNA synthesis, freely accessible databases, and our ever-expanding knowledge of protein science is conspiring to permit a revolution in creating powerful molecular tools, suggests William McEwan, Ph.D., a virologist at the MRC Laboratory of Molecular Biology, Cambridge, U.K., in this excerpt from the new book Future Science: Essays From The Cutting Edge, edited … more…
New books
Future Science: Essays from the Cutting Edge
author Max Brockman

 Amazon | Editor Max Brockman introduces the work of some of today’s brightest and most innovative young scientists in this fascinating and exciting collection of writings that describe the very boundaries of our knowledge. Future Science features nineteen young scientists, most of whom are presenting their innovative work and ideas to a general audience for … more…



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