Biologi

Diskusjon om teknologi, teknologiske fremskritt, ny vitenskap, etc.

Re: Biologi

Innlegg QIQrrr 15 Sep 2011, 00:12

University of Glasgow, September 12, 2011: Scientists at the University of Glasgow say they have taken their first tentative steps towards creating ‘life’ from inorganic chemicals potentially defining the new area of ‘inorganic biology’. Professor Lee Cronin, Gardiner Chair of Chemistry in the College of Science and Engineering, and his team have demonstrated a new way of making inorganic-chemical-cells or iCHELLS - Scientists take first step towards creating ‘inorganic life’

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"Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted" - Franz Kafka
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Re: Biologi

Innlegg QIQrrr 20 Sep 2011, 18:52

University of Washington, September 20, 2011: Human devices, from light bulbs to iPods, send information using electrons. Human bodies and all other living things, on the other hand, send signals and perform work using ions or protons. Materials scientists at the University of Washington have built a novel transistor that uses protons, creating a key piece for devices that can communicate directly with living things. The study is published online this week in the interdisciplinary journal Nature Communications - Proton-based transistor could let machines communicate with living things
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"Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted" - Franz Kafka
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Re: Biologi

Innlegg QIQrrr 21 Sep 2011, 02:53

University of Massachusetts Amherst, September 20, 2011: University of Massachusetts Amherst environmental toxicologist Edward Calabrese, whose career research shows that low doses of some chemicals and radiation are benign or even helpful, says he has uncovered evidence that one of the fathers of radiation genetics, Nobel Prize winner Hermann Muller, knowingly lied when he claimed in 1946 that there is no safe level of radiation exposure. Calabrese’s interpretation of this history is supported by letters and other materials he has retrieved, many from formerly classified files - UMass Amherst Researcher Points to Suppression of Evidence on Radiation Effects by 1946 Nobel Laureate
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"Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted" - Franz Kafka
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Re: Biologi

Innlegg QIQrrr 23 Sep 2011, 01:15

University of California, Berkeley, September 22, 2011: Imagine tapping into the mind of a coma patient, or watching one’s own dream on YouTube. With a cutting-edge blend of brain imaging and computer simulation, scientists at the University of California, Berkeley, are bringing these futuristic scenarios within reach. Using functional Magnetic Resonance Imaging (fMRI) and computational models, UC Berkeley researchers have succeeded in decoding and reconstructing people’s dynamic visual experiences – in this case, watching Hollywood movie trailers. As yet, the technology can only reconstruct movie clips people have already viewed. However, the breakthrough paves the way for reproducing the movies inside our heads that no one else sees, such as dreams and memories, according to researchers. “This is a major leap toward reconstructing internal imagery,” said Professor Jack Gallant, a UC Berkeley neuroscientist and coauthor of the study published online today (Sept. 22) in the journal Current Biology. “We are opening a window into the movies in our minds” - Scientists use brain imaging to reveal the movies in our mind

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"Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted" - Franz Kafka
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Re: Biologi

Innlegg QIQrrr 07 Nov 2011, 16:49

The University of Nottingham, November 7, 2011: Scientists at The University of Nottingham are leading an ambitious research project to develop an in vivo biological cell-equivalent of a computer operating system. The success of the project to create a ‘re-programmable cell’ could revolutionise synthetic biology and would pave the way for scientists to create completely new and useful forms of life using a relatively hassle-free approach. Professor Natalio Krasnogor of the University’s School of Computer Science, who leads the Interdisciplinary Computing and Complex Systems Research Group, said: “We are looking at creating a cell’s equivalent to a computer operating system in such a way that a given group of cells could be seamlessly re-programmed to perform any function without needing to modifying its hardware” - Easily 'Re-programmable cells' could be key in creation of new life forms
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"Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted" - Franz Kafka
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Re: Biologi

Innlegg QIQrrr 09 Des 2011, 01:13

Tufts University, December 8, 2011: For the first time, scientists have altered natural bioelectrical communication among cells to directly specify the type of new organ to be created at a particular location within a vertebrate organism. Using genetic manipulation of membrane voltage in Xenopus (frog) embryos, biologists at Tufts University's School of Arts and Sciences were able to cause tadpoles to grow eyes outside of the head area - Researchers Discover That Changes in Bioelectric Signals Trigger Formation of New Organs
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"Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted" - Franz Kafka
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Re: Biologi

Innlegg QIQrrr 20 Apr 2012, 12:26

Extreme Longevity, April 16, 2012: C(60) fullerene is a naturally occurring molecule containing 60 carbon atoms arranged in a sphere. It is famously known as the buckyball, short for buckminsterfullerene, and discovered in 1985. Since 1993, the molecule has been suspected to have multiple potential biological benefits. This list includes UV and radioprotection, antiviral, antioxidant, and anti-amyloid activities, allergic response and angiogenesis inhibitions, immune stimulating and antitumour effects, enhancing effect on neurite outgrowth, gene delivery, and even hair-growing activity. In the current study researchers fed the molecule dissolved in olive oil to rats and compared outcomes to a control group of rats who got plain olive oil. The main question they wanted to answer was whether chronic C60 administration had any toxicity, what they discovered actually surprised them. “Here we show that oral administration of C60 dissolved in olive oil (0.8 mg/ml) at reiterated doses (1.7 mg/kg of body weight) to rats not only does not entail chronic toxicity,” they write “but it almost doubles their lifespan” - Chronic Buckyball Administration Doubles Rat Lifespan

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"Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted" - Franz Kafka
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Astrobiologi

Innlegg QIQrrr 25 Apr 2012, 19:22

Royal Astronomical Society, April 24, 2012: Research by a Danish physicist suggests that the explosion of massive stars – supernovae – near the Solar System has strongly influenced the development of life. Prof. Henrik Svensmark of the Technical University of Denmark (DTU) sets out his novel work in a paper in the journal Monthly Notices of the Royal Astronomical Society - Did exploding stars help life on Earth to thrive?
Børge Svanstrøm Amundsen

"Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted" - Franz Kafka
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Re: Biologi

Innlegg QIQrrr 28 Mar 2013, 20:40

Nature, March 18, 2013: At first glance, it looks like an oddly shaped campfire: smoky grey shapes light up with red sparks and flashes. But the video actually represents a different sort of crackle — the activity of individual neurons across a larval fish brain. It is the first time that researchers have been able to image an entire vertebrate brain at the level of single cells. “We see the big picture without losing resolution,” says Phillipp Keller, a microscopist at the Howard Hughes Medical Institute's Janelia Farm Research Campus in Ashburn, Virginia, who developed the system with Janelia neurobiologist Misha Ahrens. The researchers are able to record activity across the whole fish brain almost every second, detecting 80% of its 100,000 neurons. (The rest lie in hard-to-access areas, such as between the eyes; their activity is visible but cannot be pinned down to single cells.) The work is published today in Nature Methods. “It’s phenomenal,” says Rafael Yuste, a neuroscientist at Columbia University in New York. “It is a bright star now in the literature, suggesting that it is not crazy to map every neuron in the brain of an animal.” Yuste has been leading the call for a big biology project that would do just that in the human brain, which contains about 85,000 times more neurons than the zebrafish brain - Flashing fish brains filmed in action

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"Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted" - Franz Kafka
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