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Erich Feldmeier

Dan Hoornweg: Umweltbelastung: Forscher erwarten dramatischen Anstieg des Mül... - 0 views

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    "Jeden Tag häuft Menschheit 3,5 Millionen Tonnen Abfall an und es wird stetig mehr. Wenn sich daran nichts ändert, wird sich die tägliche Menge bis zum Jahr 2025 verdoppelt haben. 2100 werden es pro Tag mehr als elf Millionen Tonnen feste Abfälle sein, schätzen Forscher um Daniel Hoornweg. Der Professor an der kanadischen Universität von Ontario hat bereits 2012 einen Weltbank-Bericht zum Thema Müll mitverfasst. Nun warnt er zusammen mit seinen Kollegen Perinaz Bhada-Tata und Chris Kennedy im Magazin Nature vor den Folgen des wachsenden Abfallbergs. "
Erich Feldmeier

Felix Liechti: Alpensegler Sieben Monate nonstop in der Luft - @bdwredaktion - 0 views

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    "Quelle: Felix Liechti (Schweizer Ornithologisches Institut, Sempach) et al., Nature Communicataions, doi: 10.1038/ncomms3554"
Erich Feldmeier

Tuur Van Balen shows how to hack L.delbrueckii on stage | Indie Biotech - 0 views

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    "I chose S.thermophilus randomly of the two; I could as easily have chosen L.delbrueckii. Fortunately, I didn't, because Tuur Van Balen, syn-bio-artist extraordinaire, has given a practical demonstration for Next Nature on how to do so!"
Erich Feldmeier

Robert E. Sorge: Forscherschweiß - unterschätzter Einflussfaktor bei Tiervers... - 0 views

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    "Versuchstiere im Labor können ganz unterschiedlich reagieren, je nachdem ob ein Mann oder eine Frau das Experiment durchführt. Das beeinflusst die Ergebnisse wissenschaftlicher Untersuchungen, berichten kanadische Psychologen im Fachjournal „Nature Methods". Demnach erzeugt der Körpergeruch eines Mannes Stressreaktionen und verringert die Schmerzempfindlichkeit von Mäusen und Ratten"
Janos Haits

api.ai - 0 views

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    "api.ai equips developers with a simple way to make their products listen, understand, and talk to users. The api.ai platform combines natural language understanding with speech recognition and synthesis, enabling speech interfaces to be easily added to any solution."
Janos Haits

Tree of Life Web Project - 0 views

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    The Tree of Life Web Project (ToL) is a collaborative effort of biologists and nature enthusiasts from around the world. On more than 10,000 World Wide Web pages, the project provides information about biodiversity, the characteristics of different groups of organisms, and their evolutionary history (phylogeny).
Walid Damouny

Pinpoint Precision: Nanowires Deliver Biochemical Payloads to One Cell Among Many - 0 views

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    "(PhysOrg.com) -- Imagine being able to drop a toothpick on the head of one particular person standing among 100,000 people in a stadium. It sounds impossible, yet this degree of precision at the cellular level has been demonstrated by researchers affiliated with the Johns Hopkins University Institute for NanoBioTechnology. Their study was published online in June in Nature Nanotechnology."
thinkahol *

"Sex at Dawn": Why monogamy goes against our nature - Nonfiction - Salon.com - 0 views

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    From testicle size to our slutty ancestors, a new book explains what human history teaches us about sex and couples
thinkahol *

Biodiversity's 'holy grail' is in the soil : Soil-borne pathogens drive tree diversity ... - 0 views

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    ScienceDaily (June 28, 2010) - Why are tropical forests so biologically rich? Smithsonian researchers have new evidence that the answer to one of life's great unsolved mysteries lies underground, according to a study published in the journal, Nature.
Charles Daney

Bird sex gene found :The Scientist - 0 views

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    Researchers have cracked the long-time mystery of how sex is determined in birds: A dose-dependent effect of a single gene on one of the sex chromosomes does the trick, according to a study published this week in Nature.
thinkahol *

Do our bodies' bacteria play matchmaker? - 0 views

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    Based on a theory developed by Prof. Rosenberg and Dr. Ilana Zilber-Rosenberg, the scientists propose that the basic unit of natural selection is not the individual living organism, plant or animal, but rather a larger biological milieu called a holobiont. This milieu can include plant or animal life as well as their symbiotic partners. In the case of animals, these partners tend to be microorganisms like intestinal bacteria.
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
Charles Daney

One step to human pluripotency :The Scientist [28th August 2009] - 0 views

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    Researchers have regressed human stem cells to an embryonic state using just a single transcription factor, as opposed to the four factors previously needed to induce pluripotency in human cells, according to a study published online today (August 28) in Nature.
Charles Daney

Winning the ultimate battle: How humans could end war - science-in-society - 07 July 20... - 0 views

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    Is warfare really an immutable part of our nature, or is it something we can overcome? Some researchers now suspect the latter
Charles Daney

'Nondiscovery' creates media ripple (physicsworld.com Blog) - physicsworld.com - 0 views

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    In this week's edition of Nature, a cohort of researchers report the latest findings from two of the major players in this search for gravitational waves - The LIGO Scientific Collaboration located in the US and the Virgo Collaboration in France and Italy. The paper reports the latest data from these two experiments collected 2005 - 2007, and discusses the implication of these results for the standard picture of cosmology.
Charles Daney

Cosmological Gravitational Radiation : Dynamics of Cats - 0 views

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    Interesting new paper coming out in Nature this week, presenting early scientific results from LIGO on the amplitude of stochastic gravitational radiation background of cosmological origin.
Charles Daney

What does Nanog do? - Nature Reports Stem Cells - 0 views

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    In embryos and induced pluripotent stem cells, Nanog sets the ground state of pluripotency Nanog, named after the fountain of eternal youth, is considered the key to pluripotency, but its role is puzzling: it can be deleted from embryonic stem cells without causing them to differentiate, and it is not among the collection of genes that can induce specialized cells to become pluripotent. Nonetheless, it does help human cells reprogram and can be used to separate incompletely reprogrammed cells from fully reprogrammed ones.
Charles Daney

Induced pluripotent stem cells, down to one factor : Nature Reports Stem Cells - 0 views

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    Differentiated human cells have been reprogrammed to an embryonic-like state with the addition of only one gene rather than the standard four. This should advance techniques for the efficient production of high-quality patient-specific stem cells.
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