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Walid Damouny

Leaves whisper their properties through ultrasound - 0 views

www.physorg.com/news184415874.html

PhysOrg.com leaves ultrasound monitoring analysis water health agriculture

shared by Walid Damouny on 20 Feb 10 - Cached
  • Walid Damouny on 20 Feb 10
     
    "The water content of leaves, their thickness, their density and other properties can now be determined without even having to touch them. A team of researchers from the CSIC Institute of Acoustics and the Agri-Food Research and Technology Centre (CITA) of Aragón has just presented an innovative technique that enables plant leaves to be studied using ultrasound in a quick, simple and non-invasive fashion."
Walid Damouny

Scientists find first physiological evidence of brain's response to inequality - 1 views

www.physorg.com/news186238210.html

PhysOrg.com mind brain neuroscience cognition intelligence equality sympathy

shared by Walid Damouny on 05 Mar 10 - Cached
  • Walid Damouny on 05 Mar 10
     
    "The human brain is a big believer in equality -- and a team of scientists from the California Institute of Technology and Trinity College in Dublin, Ireland, has become the first to gather the images to prove it."
Skeptical Debunker

A mini-laboratory for all cases - Research News 03-2010-Topic 5 - Fraunhofer-Gesellschaft - 0 views

www.fraunhofer.de/...mini-laboratory.jsp

mini-laboratory diagnosis disease

shared by Skeptical Debunker on 02 Mar 10 - Cached
  •  »We’ll just have to wait for the results of the laboratory tests.« These words are familiar to many patients. It then usually takes several days for specimens to be sent to the laboratory and analyzed and for the doctor to receive the results. For many illnesses, however, a speedy diagnosis is crucial if the treatment is to be successful. In future, the patient might only have to sit in the waiting room for a few minutes until the results are ready. In a joint project, researchers from seven Fraunhofer institutes have developed a modular platform for in vitro diagnosis which enables various types of bioanalysis – of blood and saliva for example – to be conducted in the doctor’s surgery. »Thanks to its modular design our IVD platform is so flexible that it can be used for all possible bioanalytical tasks,« states Dr. Eva Ehrentreich-Förster from the Fraunhofer Institute for Biomedical Engineering (IBMT) in Potsdam-Golm.The core element of the mini-laboratory is a disposable cartridge made of plastic which can be fitted with various types of sensor. For an analysis the doctor fills the cartridge with reagents – binding agents which indicate the presence of certain substances such as antigens in the specimen material. Various tests or assays are available for different types of analysis. To perform an assay, the doctor only has to place the relevant substances in the cartridge and the test then takes place automatically. »We have optimized the assays so that up to 500 assay reactions can be conducted in parallel in a single analysis step,« explains Dr. Ehrentreich-Förster. Even in the case of complex analyses the doctor obtains a result within about 30 minutes. A new module on the reverse side of the cartridge also makes it possible to analyze the specimen material at DNA level.Once the cartridge has been prepared, the doctor places it in the measurement system. The results can be read out with either optical or electrochemical biosensors. The researchers have installed a readout window for both methods in the measurement system, which features a bypass through which the specimen is pumped.
  • Skeptical Debunker on 02 Mar 10
     
    Many illnesses can be reliably diagnosed through laboratory tests, but these in vitro analyses often use up valuable time. A system developed by Fraunhofer research scientists, which can carry out complex analyses on the spot, will soon be ready for the market.
Walid Damouny

1 gene lost = 1 limb regained? Scientists demonstrate mammalian regeneration through si... - 1 views

www.physorg.com/news187879295.html

PhysOrg.com medical health regeneration genetics

shared by Walid Damouny on 17 Mar 10 - Cached
  • Walid Damouny on 17 Mar 10
     
    "A quest that began over a decade ago with a chance observation has reached a milestone: the identification of a gene that may regulate regeneration in mammals. The absence of this single gene, called p21, confers a healing potential in mice long thought to have been lost through evolution and reserved for creatures like flatworms, sponges, and some species of salamander. In a report published today in the Proceedings of the National Academy of Sciences, researchers from The Wistar Institute demonstrate that mice that lack the p21 gene gain the ability to regenerate lost or damaged tissue."
thinkahol *

Musical chills: Why they give us thrills - 1 views

www.sciencedaily.com/...110112111117.htm

Musical chills: Why they give us thrills

shared by thinkahol * on 13 Jan 11 - No Cached
  • thinkahol * on 13 Jan 11
     
    ScienceDaily (Jan. 12, 2011) - Scientists have found that the pleasurable experience of listening to music releases dopamine, a neurotransmitter in the brain important for more tangible pleasures associated with rewards such as food, drugs and sex. The new study from The Montreal Neurological Institute and Hospital -- The Neuro at McGill University also reveals that even the anticipation of pleasurable music induces dopamine release [as is the case with food, drug, and sex cues]. Published in the journal Nature Neuroscience, the results suggest why music, which has no obvious survival value, is so significant across human society.
Walid Damouny

Key information about breast cancer risk and development is found in 'junk' DNA - 0 views

www.physorg.com/...ey-breast-cancer-junk-dna.html

PhysOrg.com cancer DNA genome health medical

shared by Walid Damouny on 28 Dec 10 - No Cached
  • Walid Damouny on 28 Dec 10
     
    "A new genetic biomarker that indicates an increased risk for developing breast cancer can be found in an individual's "junk" (non-coding) DNA, according to a new study featuring work from researchers at the Virginia Bioinformatics Institute (VBI) at Virginia Tech and their colleagues."
thinkahol *

Peak Oil and a Changing Climate | The Nation - 2 views

www.thenation.com/...peak-oil-and-changing-climate

Peak Oil and a Changing Climate | The Nation

shared by thinkahol * on 11 Feb 11 - No Cached
  • thinkahol * on 11 Feb 11
     
    Peak Oil is the point at which petroleum production reaches its greatest rate just before going into perpetual decline. In "Peak Oil and a Changing Climate," a new video series from The Nation and On The Earth productions, radio host Thom Hartmann explains that the world will reach peak oil within the next year if it hasn't already. As a nation, the United States reached peak oil in 1974, after which it became a net oil importer. Bill McKibben, Noam Chomsky, Nicole Foss, Richard Heinberg and the other scientists, researchers and writers interviewed throughout "Peak Oil and a Changing Climate" describe the diminishing returns our world can expect as it deals with the consequences of peak oil even as it continues to pretend it doesn't exist. These experts predict substantially increased transportation costs, decreased industrial production, unemployment, hunger and social chaos as the supplies of the  fuels on which we rely dwindle and eventually disappear. Chomsky urges us to anticipate the official response to peak oil based on how corporations, news organizations and other institutions have responded to global warming: obfuscation, spin and denial. James Howard Kunstler says that we cannot survive peak oil unless we "come up with a consensus about reality that is consistent with the way things really are." This documentary series hopes to help build that consensus. Click here to watch the introductory video, and check back here for new videos each Wednesday.
thinkahol *

Minority rules: Scientists discover tipping point for the spread of ideas - 1 views

www.sciencedaily.com/...110725190044.htm

Minority rules: Scientists discover tipping point for the spread of ideas

shared by thinkahol * on 27 Jul 11 - No Cached
  • thinkahol * on 27 Jul 11
     
    ScienceDaily (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, who are members of the Social Cognitive Networks Academic Research Center (SCNARC) at Rensselaer, used computational and analytical methods to discover the tipping point where a minority belief becomes the majority opinion. The finding has implications for the study and influence of societal interactions ranging from the spread of innovations to the movement of political ideals.
thinkahol *

‪Quantum Computers and Parallel Universes‬‏ - YouTube - 0 views

www.youtube.com/watch

‪Quantum Computers and Parallel Universes‬‏ - YouTube

shared by thinkahol * on 31 Jul 11 - No Cached
  • thinkahol * on 31 Jul 11
     
    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

www.sciencedaily.com/...110728133411.htm

The brain's connectome -- from branch to

shared by thinkahol * on 31 Jul 11 - No Cached
  • thinkahol * on 31 Jul 11
     
    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.
thinkahol *

Dr. Daniel G. Nocera - YouTube - 0 views

www.youtube.com/watch

Personalized Energy for 1 (x 6 Billion): A Solution to the Global Challenge Dr. Daniel G. Nocera - YouTube

shared by thinkahol * on 12 Aug 11 - No Cached
  • thinkahol * on 12 Aug 11
     
    The supply of secure, clean, sustainable energy is arguably the most important scientific and technical challenge facing humanity in the 21st century. Rising living standards of a growing world population will cause global energy consumption to double by mid-century and triple by the end of the century. Even in light of unprecedented conservation, the additional energy needed is simply not attainable from long discussed sources these include nuclear, biomass, wind, geothermal and hydroelectric. The global appetite for energy is simply too much. Petroleum-based fuel sources (i.e., coal, oil and gas) could be increased. However, deleterious consequences resulting from external drivers of economy, the environment, and global security dictate that this energy need be met by renewable and sustainable sources. The dramatic increase in global energy need is driven by 3 billion low-energy users in the non-legacy world and by 3 billion people yet to inhabit the planet over the next half century. The capture and storage of solar energy at the individual level personalized solar energy drives inextricably towards the heart of this energy challenge by addressing the triumvirate of secure, carbon neutral and plentiful energy. This talk will place the scale of the global energy issue in perspective and then discuss how personalized energy (especially for the non-legacy world) can provide a path to a solution to the global energy challenge. Daniel G. Nocera is the Henry Dreyfus Professor of Energy at the Massachusetts Institute of Technology, Director of the Solar Revolutions Project and Director of the Eni Solar Frontiers Center at MIT. His group pioneered studies of the basic mechanisms of energy conversion in biology and chemistry. He has recently accomplished a solar fuels process that captures many of the elements of photosynthesis outside of the leaf. This discovery sets the stage for a storage mechanism for the large scale, distributed, deployment of solar energy. He has b
thinkahol *

Boys reach sexual maturity younger and younger: Phase between being physically but not ... - 0 views

www.sciencedaily.com/...110818101714.htm

Boys reach sexual maturity younger and younger: Phase between being physically but not socially adult is getting longer

shared by thinkahol * on 20 Aug 11 - No Cached
  • thinkahol * on 20 Aug 11
     
    ScienceDaily (Aug. 19, 2011) - Boys are maturing physically earlier than ever before. The age of sexual maturity has been decreasing by about 2.5 months each decade at least since the middle of the 18th century. Joshua Goldstein, director of the Max Planck Institute for Demographic Research in Rostock (MPIDR), has used mortality data to demonstrate this trend, which until now was difficult to decipher. What had already been established for girls now seems to also be true for boys: the time period during which young people are sexually mature but socially not yet considered adults is expanding.
Janos Haits

the campus experience. online. | iversity - 0 views

www.iversity.org

campus experience online education collaboration Science Scientist

shared by Janos Haits on 28 Sep 11 - No Cached
  • Janos Haits on 28 Sep 11
     
    Our aspiration is to become the course management platform of choice for instructors and students around the globe. But of course, iversity's cutting-edge infrastructure can also be deployed for international research projects. Work is something you do rather than somewhere you go. With this maxim in mind, iversity has designed a cloud-based service that fosters limitless collaboration among academics worldwide. Faculty are no longer forced to work with the outdated software in use at their institution. Instead, they can sign up on an individual basis. Oh, and the best part: it's free.
thinkahol *

Scientists create stable, self-renewing neural stem cells - 1 views

www.sciencedaily.com/...110425153554.htm

Scientists create stable self-renewing neural stem cells

shared by thinkahol * on 01 May 11 - No Cached
  • thinkahol * on 01 May 11
     
    ScienceDaily (Apr. 26, 2011) - In a paper published in the April 25 early online edition of the Proceedings of the National Academy of Sciences, researchers at the University of California, San Diego School of Medicine, the Gladstone Institutes in San Francisco and colleagues report a game-changing advance in stem cell science: the creation of long-term, self-renewing, primitive neural precursor cells from human embryonic stem cells (hESCs) that can be directed to become many types of neuron without increased risk of tumor formation.
thinkahol *

Quantum magic trick shows reality is what you make it - physics-math - 22 June 2011 - N... - 2 views

www.newscientist.com/...ality-is-what-you-make-it.html

Quantum magic trick shows reality is what you make it - physics-math 22 June 2011 New Scientist

shared by thinkahol * on 28 Jun 11 - No Cached
  • thinkahol * on 28 Jun 11
     
    In 1967, Simon Kochen and Ernst Specker proved mathematically that even for a single quantum object, where entanglement is not possible, the values that you obtain when you measure its properties depend on the context. So the value of property A, say, depends on whether you chose to measure it with property B, or with property C. In other words, there is no reality independent of the choice of measurement. It wasn't until 2008, however, that Alexander Klyachko of Bilkent University in Ankara, Turkey, and colleagues devised a feasible test for this prediction. They calculated that if you repeatedly measured five different pairs of properties of a quantum particle that was in a superposition of three states, the results would differ for the quantum system compared with a classical system with hidden variables. That's because quantum properties are not fixed, but vary depending on the choice of measurements, which skews the statistics. "This was a very clever idea," says Anton Zeilinger of the Institute for Quantum Optics, Quantum Nanophysics and Quantum Information in Vienna, Austria. "The question was how to realise this in an experiment." Now he, Radek Lapkiewicz and colleagues have realised the idea experimentally. They used photons, each in a superposition in which they simultaneously took three paths. Then they repeated a sequence of five pairs of measurements on various properties of the photons, such as their polarisations, tens of thousands of times. A beautiful experiment They found that the resulting statistics could only be explained if the combination of properties that was tested was affecting the value of the property being measured. "There is no sense in assuming that what we do not measure about a system has [an independent] reality," Zeilinger concludes.
thinkahol *

It's not an apple a day after all -- it's strawberries: Flavonoids could represent two-... - 1 views

www.sciencedaily.com/...110627183932.htm

not an apple a day after all -- it's strawberries: Flavonoids could represent two-fisted assault on diabetes and nervous system disorders

shared by thinkahol * on 01 Jul 11 - No Cached
  • thinkahol * on 01 Jul 11
     
    ScienceDaily (June 28, 2011) - A recent study from scientists at the Salk Institute for Biological Studies suggests that a strawberry a day (or more accurately, 37 of them) could keep not just one doctor away, but an entire fleet of them, including the neurologist, the endocrinologist, and maybe even the oncologist.
thinkahol *

How your memories can be twisted under social pressure | KurzweilAI - 1 views

www.kurzweilai.net/-twisted-under-social-pressure

How your memories can be twisted under social pressure | KurzweilAI

shared by thinkahol * on 11 Jul 11 - No Cached
  • thinkahol * on 11 Jul 11
     
    Listen up, Facebook and Twitter groupies: how easily can social pressure affect your memory? Very easily, researchers at the Weizmann Institute and University College London have proved, and they think they even know what part of the brain is responsible. The participants conformed to the group on these "planted" responses, giving incorrect answers nearly 70% of the time. Volunteers watched a documentary film in small groups. Three days later, they returned to the lab individually to take a memory test, answering questions about the film. They were also asked how confident they were in their answers. They were later invited back to the lab to retake the test. This time, the subjects were also given supposed answers of the others in their film-viewing group (along with social-media-style photos) while being scanned in a functional MRI (fMRI) that revealed their brain activity. Is most of what you know false? Planted among these were false answers to questions the volunteers had previously answered correctly and confidently. The participants conformed to the group on these "planted" responses, giving incorrect answers nearly 70% of the time. To determine if their memory of the film had actually undergone a change, the researchers invited the subjects back to the lab later to take the memory test once again, telling them that the answers they had previously been fed were not those of their fellow film watchers, but random computer generations. Some of the responses reverted back to the original, correct ones, but get this: despite finding out the scientists messed with their minds, close to half of their responses remained erroneous, implying that the subjects were relying on false memories implanted in the earlier session. An analysis of the fMRI data showed a strong co-activation and connectivity between two brain areas: the hippocampus and the amygdala. Social reinforcement could act on the amygdala to persuade our brains to replace a strong memory wi
Janos Haits

ICSI: International Computer Science Institute | Berkeley, California - 0 views

www.icsi.berkeley.edu

ICSI institute berkeley california Computer international science

shared by Janos Haits on 18 Oct 11 - No Cached
  • Janos Haits on 18 Oct 11
     
    ICSI invites applications for a postdoctoral fellow position in the area of multimedia content analysis for a project on concept detection in a large-scale database of consumer-produced videos using acoustic and multimedia methods.
thinkahol *

Sea levels to continue to rise for 500 years? Long-term climate calculations suggest so - 1 views

www.sciencedaily.com/...111017102601.htm

Sea levels to continue rise for 500 years? Long-term climate calculations suggest so

shared by thinkahol * on 19 Oct 11 - No Cached
  • thinkahol * on 19 Oct 11
     
    ScienceDaily (Oct. 17, 2011) - Rising sea levels in the coming centuries is perhaps one of the most catastrophic consequences of rising temperatures. Massive economic costs, social consequences and forced migrations could result from global warming. But how frightening of times are we facing? Researchers from the Niels Bohr Institute are part of a team that has calculated the long-term outlook for rising sea levels in relation to the emission of greenhouse gases and pollution of the atmosphere using climate models.
Janos Haits

Cetis - expert advice on educational technology and standards - 0 views

www.cetis.ac.uk

elearning e-learning learning education standards portal scorm interoperability research science technology

shared by Janos Haits on 06 Jun 14 - Cached
  • Janos Haits on 06 Jun 14
     
    "Cetis is the Centre for Educational Technology, Interoperability and Standards. Our staff are globally recognised as leading experts on education technology innovation, interoperability and technology standards. For over a decade Cetis has provided strategic, technical and pedagogical advice on educational technology and standards to funding bodies, standards agencies, government, institutions and commercial partners."
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