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thinkahol *

Quantum entanglement holds together life's blueprint - life - 15 July 2010 - New Scientist - 0 views

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    To see if quantum processes play a role in determining the shape of DNA, Elisabeth Rieper of the National University of Singapore and colleagues modelled each base pair as a cloud of electrons that oscillates around a positively charged nucleus. The team found that quantum entanglement between these clouds helped DNA to maintain its helical structure.
thinkahol *

Breakthrough chip technology lights path to exascale computing: Optical signals connect chips together faster and with lower power - 0 views

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    ScienceDaily (Dec. 3, 2010) - IBM scientists have unveiled a new chip technology that integrates electrical and optical devices on the same piece of silicon, enabling computer chips to communicate using pulses of light (instead of electrical signals), resulting in smaller, faster and more power-efficient chips than is possible with conventional technologies.
Mike Chelen

RNA world easier to make : Nature News - 0 views

  • John Sutherland and his colleagues from the University of Manchester, UK
  • ribonucleotide
  • building block of RNA
  • ...29 more annotations...
  • Donna Blackmond, a chemist at Imperial College London.
  • strong evidence for the RNA world
  • 'RNA world' hypothesis, which suggests that life began when RNA, a polymer related to DNA that can duplicate itself and catalyse reactions
  • chemists had thought the subunits would probably assemble themselves first, then join to form a ribonucleotide
  • three distinct parts: a ribose sugar, a phosphate group and a base
  • RNA polymer is a string of ribonucleotides
  • efforts to connect ribose and base together have met with frustrating failure
  • researchers have now managed to synthesise
  • ribonucleotides
  • remedy is to avoid producing separate ribose-sugar and base subunits
  • makes a molecule whose scaffolding contains a bond that will
  • be the key ribose-base connection
  • atoms are then added around this skeleton
  • final connection is to add a phosphate group
  • influences the entire synthesis
  • acting as a catalyst, it guides small organic molecules into making the right connections
  • What we have ended up with is molecular choreography
  • objectors to the RNA-world theory say the RNA molecule as a whole is too complex to be created using early-Earth geochemistry
  • flaw is in the logic — that this experimental control by researchers in a modern laboratory could have been available on the early Earth
  • Robert Shapiro, a chemist at New York University
  • early-Earth scenarios
  • heating molecules in water, evaporating them and irradiating them with ultraviolet light
  • results showing that they can string nucleotides together
  • ultimate goal is to get a living system (RNA) emerging from a one-pot experiment
  • need to know what the constraints on the conditions are first
  • Shapiro sides with
  • another theory of life's origins
  • because RNA is too complex to emerge from small molecules, simpler metabolic processes
  • eventually catalysed the formation of RNA and DNA
thinkahol *

DNA can discern between two quantum states, research shows - 2 views

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    ScienceDaily (June 4, 2011) - Do the principles of quantum mechanics apply to biological systems? Until now, says Prof. Ron Naaman of the Institute's Chemical Physics Department (Faculty of Chemistry), both biologists and physicists have considered quantum systems and biological molecules to be like apples and oranges. But research he conducted together with scientists in Germany, which appeared recently in Science, shows that a biological molecule -- DNA -- can discern between quantum states known as spin.
thinkahol *

‪Quantum Computers and Parallel Universes‬‏ - YouTube - 0 views

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    Complete video at: http://fora.tv/2009/05/23/Marcus_Chown_in_Conversation_with_Fred_Watson Marcus Chown, author of Quantum Theory Cannot Hurt You: A Guide to the Universe, discusses the mechanics behind quantum computers, explaining that they function by having atoms exist in multiple places at once. He predicts that quantum computers will be produced within 20 years. ----- The two towering achievements of modern physics are quantum theory and Einsteins general theory of relativity. Together, they explain virtually everything about the world in which we live. But almost a century after their advent, most people havent the slightest clue what either is about. Radio astronomer, award-winning writer and broadcaster Marcus Chown talks to fellow stargazer Fred Watson about his book Quantum Theory Cannot Hurt You. - Australian Broadcasting Corporation Marcus Chown is an award-winning writer and broadcaster. Formerly a radio astronomer at the California Institute of Technology, he is now cosmology consultant of the weekly science magazine New Scientist. The Magic Furnace, Marcus' second book, was chosen in Japan as one of the Books of the Year by Asahi Shimbun. In the UK, the Daily Mail called it "a dizzy page-turner with all the narrative devices you'd expect to find in Harry Potter". His latest book is called Quantum Theory Cannot Hurt You.
thinkahol *

The brain's connectome -- from branch to branch - 1 views

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    ScienceDaily (July 28, 2011) - The human brain is the most complex of all organs, containing billions of neurons with their corresponding projections, all woven together in a highly complex, three-dimensional web. To date, mapping this vast network posed a practically insurmountable challenge to scientists. Now, however, a research team from the Heidelberg-based Max Planck Institute for Medical Research has developed a method for tackling the mammoth task. Using two new computer programs, KNOSSOS and RESCOP, a group of over 70 students mapped a network of more than 100 neurons -- and they did so faster and more accurately than with previous methods.
Charles Daney

How does your galaxy grow? - New Scientist - 0 views

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    Together with ever-improving observations of the early universe, grand simulations are beginning to paint a single, unifying picture of why the universe looks as it does. At its heart is an almost invisible scaffold of dark matter and cold gas on which the visible constituents of the universe hang - a structure known as the cosmic web.
Walid Damouny

Studies suggest males have more personality - 0 views

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    "Males have more pronounced personalities than females across a range of species - from humans to house sparrows - according to new research. Consistent personality traits, such as aggression and daring, are also more important to females when looking for a mate than they are to males. Research from the University of Exeter draws together a range of studies to reveal the role that sexual selection plays in this disparity between males and females."
thinkahol *

TEDxRheinMain - Prof. Dr. Thomas Metzinger - The Ego Tunnel - YouTube - 1 views

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    Brain, bodily awareness, and the emergence of a conscious self: these entities and their relations are explored by Germanphilosopher and cognitive scientist Metzinger. Extensively working with neuroscientists he has come to the conclusion that, in fact, there is no such thing as a "self" -- that a "self" is simply the content of a model created by our brain - part of a virtual reality we create for ourselves. But if the self is not "real," he asks, why and how did it evolve? How does the brain construct the self? In a series of fascinating virtual reality experiments, Metzinger and his colleagues have attempted to create so-called "out-of-body experiences" in the lab, in order to explore these questions. As a philosopher, he offers a discussion of many of the latest results in robotics, neuroscience, dream and meditation research, and argues that the brain is much more powerful than we have ever imagined. He shows us, for example, that we now have the first machines that have developed an inner image of their own body -- and actually use this model to create intelligent behavior. In addition, studies exploring the connections between phantom limbs and the brain have shown us that even people born without arms or legs sometimes experience a sensation that they do in fact have limbs that are not there. Experiments like the "rubber-hand illusion" demonstrate how we can experience a fake hand as part of our self and even feel a sensation of touch on the phantom hand form the basis and testing ground for the idea that what we have called the "self" in the past is just the content of a transparent self-model in our brains. Now, as new ways of manipulating the conscious mind-brain appear on the scene, it will soon become possible to alter our subjective reality in an unprecedented manner. The cultural consequences of this, Metzinger claims, may be immense: we will need a new approach to ethics, and we will be forced to think about ourselves in a fundamentally new way. At
Janos Haits

WorldWide Telescope - 0 views

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    The WorldWide Telescope (WWT) is a visualization environment that enables your computer to function as a virtual telescope-bringing together imagery from the world's best ground- and space-based telescopes for the exploration of the universe. WWT blends terabytes of images, information, and stories from multiple sources into a seamless, immersive, rich media experience. Explorers of all ages will feel empowered to explore and understand the cosmos using WWT's simple and powerful user interface.
Janos Haits

geppetto - 0 views

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    Geppetto.org is a web-based multi-algorithm, multi-scale simulation platform engineered to support the simulation of complex biological systems and their surrounding environment. A completely modular platform. Engineered together with scientists, Geppetto lets you integrate different simulators and models. Independent modules allow the user to read different standard modeling formats and to simulate different aspects of reality. An open-source revolution. Geppetto is entirely open source and engineers, scientists and developers are welcome to contribute to its development by adding functionality to existing modules or by creating new ones!
Janos Haits

The Stanford NLP (Natural Language Processing) Group - 0 views

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    "The Natural Language Processing Group at Stanford University is a team of faculty, research scientists, postdocs, programmers and students who work together on algorithms that allow computers to process and understand human languages. Our work ranges from basic research in computational linguistics to key applications in human language technology, and covers areas such as sentence understanding, machine translation, probabilistic parsing and tagging, biomedical information extraction, grammar induction, word sense disambiguation, automatic question answering, and text to 3D scene generation."
anonymous

Join Special Prayer on Mr. Mahendra Trivedi's Birthday "Empower Your Magnetism" - 0 views

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    Everyone could join Mahendra Trivedi at the specialized two-hour live webcast "Empower your Magnetism" on February 11, 2015, at 9PM ET. Where they could hear his thought-provoking discourse and will communicate with him together with thousands of individuals from across the globe.
Janos Haits

SGI Wikipedia Project - 0 views

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    He turned to Wikipedia and together with SGI has created the first-ever historical mapping and exploration of the full text contents of the English-language edition of Wikipedia, in time and space, with visualizations of modern history captured in under a day. Loading the entire English language edition of Wikipedia into SGI UV 2000, Mr. Leetaru was able to show how Wikipedia's view of the world unfolded over the past two centuries. Location, year and the positive or negative sentiment have been tied to those references.
Janos Haits

https://ami.withgoogle.com - 5 views

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    Artists and Machine Intelligence - "AMI is a program at Google that brings artists and engineers together to realize projects using Machine Intelligence. By supporting this emerging form of artistic collaboration we open our research to new ways of thinking about and working with intelligent systems. Follow along on our Medium blog."
thinkahol *

Technology Review: Blogs: arXiv blog: Highlights from the Gallery of Fluid Motion - 9 views

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    The best of the bunch (so far) for the 2010 American Physical Society's Gallery of Fluid Motion Each year, the Fluid Dynamics division of the American Physical Society holds a conference. This year, the meeting is in Long Beach, California, in November. One of the highlights is the impressive set of videos of fluid motion that the delegates put together. These videos have already begun to appear on the arViv in impressive numbers. Videos are an effective and increasingly popular way of publishing research. Expect to see more like this. But there are clearly better ways to make them available other than as downloads from the arXiv or as videos in a room in Long Beach. One obvious option is to make them available on streaming websites such as YouTube andVimeo. As far as I can tell, they are not available like this. Another is to create a website that showcases them in advance, to make it a global, web-based event. Many of the videos are superb. Not only could they command a bigger audience, they deserve it. If plans are afoot to make the Gallery of Fluid Motion a bigger event, then great. If not, shame! Here is my selection of the highlights this year.
john doe

Emergence - 1 views

  • Mark H. Bickhard with Donald T. Campbell
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    I thought of the Aurora Borealis as a slow motion version of what we cannot see with the naked eye. Particles coming together in an astounding manner and in a sequential order as we understand it. Is this Emergence?
Skeptical Debunker

Giant Snake Ate Baby Dinosaurs | LiveScience - 0 views

  • The site that yielded the snake — dubbed Sanajeh indicus, or "ancient-gaped one from India" — was located near a village in Gujarat in western India. It was a rich nesting ground for sauropods known as titanosaurs, with evidence for hundreds of egg clutches, each containing about six to 12 round, spherical eggs. Two other instances of fossil snakes found with these clutches suggest the newly described serpent species made its living plundering nests for young dinosaurs. "It would have been a smorgasbord," said researcher Jason Head, a paleontologist at the University of Toronto at Mississauga. "Hundreds or thousands of defenseless baby sauropods could have supported an ecosystem of predators during the hatching season." The dinosaur eggs likely were laid along the sandy banks of a small, quiet tributary and covered afterward by the mother with a thin layer of sediment. These dinosaurs did not seem to look after their young — no evidence for adults has been found at the site. The fact the bones and delicate structures, such as eggshells and the snake's skull, are arranged in anatomical order (as they would appear in real life) points to quick entombment of a serpent caught in the act, as opposed to them all getting washed together after they died. "Burial was rapid and deep," said researcher Shanan Peters, a geologist at the University of Wisconsin. "Probably a pulse of slushy sand and mud released during a storm."
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    The last thing hatchling dinosaurs might have seen were giant snakes, researchers say. Scientists found the nearly complete remains of an 11-foot-long, 67-million-year-old serpent coiled around a crushed dinosaur egg right next to a hatchling in the nest of a sauropod dinosaur, the largest animals to have ever walked the Earth. "We think that the hatchling had just exited its egg, and that activity attracted the snake," explained researcher Dhananjay Mohabey, a paleontologist at the Geological Survey of India. "It was such a thrill to discover such a portentous moment frozen in time."
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