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Nervenzellen im Krähengehirn ordnen Bilder richtig zu

By Guest PostDecember 20, 2015Nature, Scienceandreas nieder, das gehirn, galyna pidpruzhnykova, kraehengehirn, lena veit, nervenzellen

Während des Lernens entstehen Reaktionsmuster, die relevante Zusammenhänge anzeigen ‒ ähnlich wie beim Säugetier

Krähen sind dafür bekannt, dass sie schnell Zusammenhänge herstellen können: nur so können sie sich erfolgreich in unseren Städten zurecht finden und lernen, wie man mit Ampeln umgeht, wer ihnen Nüsse mitbringt, und welche Menschen man besser meiden sollte. Wie das Gehirn der Krähen solche Lernaufgaben meistert, das konnten jetzt Forscher der Universität Tübingen in einer Studie zeigen, die im Fachjournal PNAS (Proceedings of the National Academy of Sciences of the United States of America) erschienen ist. (more…)

Verborgenes sichtbar machen

By Guest PostDecember 20, 2015Sciencealex fauler, detektorsystem, fmf, michael fiederle, xie, xray

Am Freiburger Materialforschungszentrum entwickeln Wissenschaftler hochsensitive Röntgendetektoren

Wiegen, schütteln, lauschen: Nach wie vor ist das die beliebteste Methode, um den Inhalt eines Kinder-Überraschungseis zu erraten. Prof. Dr. Michael Fiederle vom Freiburger Materialforschungszentrum (FMF) der Albert-Ludwigs-Universität hat dafür einen anderen Ansatz entwickelt: Er stellt das Überraschungsei in einen tragbaren Computertomografen (CT), und das Innenleben wird auf dem Bildschirm sichtbar.

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Ants build ‘living’ bridges with their bodies, speak volumes about group intelligence

By Guest PostDecember 18, 2015Nature, Scienceants, army ants, build, chris reid, colony, eciton hamatum, group intelligence, iain couzin, living bridges, matthew lutz, princeton university, radhika nagpal, scott powell

Columns of workers penetrate the forest, furiously gathering as much food and supplies as they can. They are a massive army that living things know to avoid, and that few natural obstacles can waylay. So determined are these legions that should a chasm or gap disrupt the most direct path to their spoils they simply build a new path — out of themselves. (more…)

Wirbeltiere bekommen teilweise neue Evolutionsgeschichte

By Guest PostDecember 18, 2015Sciencebarbara wueringer, cathrin pfaff, evolutionsgeschichte, fossil, juergen kriwet, mikro ct, saegezaehne, schizorhiza stromeri, wirbeltiere

Kieferzähne und Schuppen von Wirbeltieren haben unterschiedlichen Ursprung

Aktuelle Forschungsergebnisse der PaläontologInnen Jürgen Kriwet und Cathrin Pfaff von der Universität Wien bringen eine klassische Evolutionstheorie der Wirbeltiere ins Wanken: Die Kieferzähne von Haien und Rochen sollen demnach nicht direkt von den äußeren Körperschuppen abstammen. Die Studie wird aktuell im Fachjournal “Proceedings of the Royal Society B” veröffentlicht.
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Detecting and identifying explosives with single test

By Guest PostDecember 17, 2015Science, Technology, Weaponsdetecting, dnt, explosives, identifying, ivan parkin, kimberly bratic, petn, rdx, single test, tetryl, tnt, ucl, william peveler

A new test for detecting multiple explosives simultaneously has been developed by UCL scientists. The proof-of-concept sensor is designed to quickly identify and quantify five commonly used explosives in solution to help track toxic contamination in waste water and improve the safety of public spaces. (more…)

Can robots make good teammates? In Yale lab, they are learning the skills

By Guest PostDecember 16, 2015Science, Technologybrad hayes, brian scassellati, current technology, good teammates, robots, yale lab

Are they our evil overlords, or our personal servants? Another possibility altogether is that they’re our dependable co-workers, helping us put together that new Ikea bookcase. (more…)

Scientists grow organic semiconductor crystals vertically for first time

By Guest PostDecember 15, 2015Sciencecomplex mechanism, crystals, grow, james torres, light antennas, michael yeung; adam stieg, organic semiconductor, richard kaner, shan jiang, vertical, yue jessica wang

UCLA-led breakthrough could literally reshape solar cells and electronic devices

Our smartphones, tablets, computers and biosensors all have improved because of the rapidly increasing efficiency of semiconductors. (more…)

A doctor’s love affair with medicine and literature

By Guest PostDecember 10, 2015Health, Scienceanna reisman, doctor, literature, love affair, magic mountain, medicine, nu haven kapelye, thomas mann, yale university

For Anna Reisman, M.D., it was a summer novel that pointed her to a career in medicine.

As a rising Yale senior and English major with no thought of becoming a doctor, she read Thomas Mann’s classic 1924 novelThe Magic Mountain, a tale of tuberculosis patients at a Swiss sanatorium. Surprised by her own fascination with the disease, she went on to read physician-writers Oliver Sacks, M.D., Richard Selzer, M.D., HS ’61, and Lewis Thomas, M.D. Soon she was a medical student at New York University. (more…)

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