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Χείλων, Ιστολόγιο Ιστορικών Αναδρομών, Επιστημονικών Αναφορών και Προβληματισμού Chilonas.com Historical reviews & essays - Scientific Reports
In a new study, published in Nature this week, a research team led from Uppsala University in Sweden presents the discovery of a new microbe that represents a missing link in the evolution of complex life. The study provides a new understanding of how, billions of years ago, the complex cell types that comprise plants, fungi, but also animals and humans, evolved from simple microbes.
Νεα μελέτη, η οποία &epsi........ Read more »
Spang, A., Saw, J., Jørgensen, S., Zaremba-Niedzwiedzka, K., Martijn, J., Lind, A., van Eijk, R., Schleper, C., Guy, L., & Ettema, T. (2015) Complex archaea that bridge the gap between prokaryotes and eukaryotes. Nature. DOI: 10.1038/nature14447
Maunakea, Hawaii – A team of astronomers using ground-based telescopes in Hawaii, California, and Arizona recently discovered a planetary system orbiting a nearby star that is only 54 light-years away. All three planets orbit their star at a distance closer than Mercury orbits the sun, completing their orbits in just 5, 15, and 24 days. The paper is being published in the Astrophysical Journal.... Read more »
Δεδομένης της ολοκλήρωσης των 25 χρόνων λειτουργίας του, παρουσιάζονται μερικές από τις σημαντ&iota........ Read more »
Periklis D. Livas. (2015) Hubble's 25th anniversary. Chilon. info:/
A potentially game-changing breakthrough in artificial photosynthesis has been achieved with the development of a system that can capture carbon dioxide emissions before they are vented into the atmosphere and then, powered by solar energy, convert that carbon dioxide into valuable chemical products, including biodegradable plastics, pharmaceutical drugs and even liquid fuels.... Read more »
Liu, C., Gallagher, J., Sakimoto, K., Nichols, E., Chang, C., Chang, M., & Yang, P. (2015) Nanowire–Bacteria Hybrids for Unassisted Solar Carbon Dioxide Fixation to Value-Added Chemicals. Nano Letters, 2147483647. DOI: 10.1021/acs.nanolett.5b01254
Η περίοδος πολιτικής αστάθειας της Αγγλικής ιστορίας γνωστή ως Πόλεμος των Ρόδων, μετουσιώθη&k........ Read more »
Περικλής Δημ. Λιβάς. (2015) Η μάχη του Towton (29 Μαρτίου 1461). Chilon Historical Recursions. info:/
Η ιστορία του Τέξας αναδεικνύει τον σημαντικό ρόλο που διαδραμάτισαν κατά το χρονικό διάστημα μετ&alp........ Read more »
Περικλής Δημ. Λιβάς. (2015) Οι Κομάντσι - Comanche. Chilon. info:/
Το ειδύλλιο της ατρόμητης Αμαζόνας πολέμαρχου με τον κατακτητή των συνόρων του γνωστού κόσμου τ&eta........ Read more »
Περικλής Δημ. Λιβάς. (2015) Μέγας Αλεξανδρος . Chilon. info:/
Στις 6 Απριλίου 1922, οι Ανρί Μπεργκσόν (Henri Bergson) και Άλμπερτ Αϊνστάιν (Albert Einstein) συνευρέθησαν στην συνεδρίαση των με&lambda........ Read more »
Περικλής Δημ. Λιβάς. (2015) Albert Einstein-Henri Bergson, The Debate Αϊνστάιν-Μπερξόν, η διαμάχη. Chilon. info:/
Ο Ναπολέων Βοναπάρτης υπήρξε ένας από τους επιφανέστερους στρατιωτικούς και πολιτικούς ηγέτε&s........ Read more »
Χείλων. (2015) Ναπολέων ο Μέγας. chilonas.com. info:/
Astronomers have undertaken a new survey of the plane of our Milky Way and discovered a large quantity of cold, dense clumps of gas and dust, apparently the cradles of massive stars. A team headed by Timea Csengeri from the Max Planck Institute for Radio Astronomy in Bonn has now used the map, which was obtained by the APEX telescope at a wavelength of 0.87 millimetres, to estimate the time scale for the formation of stars.
The result: the process seems to proceed very rapidly, with massive s........ Read more »
T. Csengeri, J. S. Urquhart, F. Schuller, F. Motte, S. Bontemps, F. Wyrowski, K. M. Menten, L. Bronfman, H. Beuther, Th. Henning.... (2013) The ATLASGAL survey: a catalog of dust condensations in the Galactic plane. Cornell University Library. arXiv: 1312.0937v2
At the surface, Antarctica is a motionless and frozen landscape. Yet hundreds of miles down the Earth is moving at a rapid rate, new research has shown.
The study, led by Newcastle University, UK, and published this week in Earth and Planetary Science Letters, explains for the first time why the upward motion of the Earth’s crust in the Northern Antarctic Peninsula is currently taking place so quickly.
-News release May 12, 2014 Newcastle University... Read more »
Nield, G., Barletta, V., Bordoni, A., King, M., Whitehouse, P., Clarke, P., Domack, E., Scambos, T., & Berthier, E. (2014) Rapid bedrock uplift in the Antarctic Peninsula explained by viscoelastic response to recent ice unloading. Earth and Planetary Science Letters, 32-41. DOI: 10.1016/j.epsl.2014.04.019
New technique uses infrared synchrotron light and atomic force microscopy to study batteries, cell membranes, stardust, and other complex systems on the nanoscale.
News release May 07, 2014 By Kate Greene Lawrence Berkeley National Laboratory... Read more »
The smallest possible magnets are the size of a single atom. Now scientists have reached the limits of optimisation of the tiny particles: they have created single atom magnets that are as strong and stable as is physically possible for the class of atoms used.
_Research May 09, 2014 By Fabio Bergamin ETH Zurich
Observed live with x-ray laser: electricity controls magnetism
_Paul Scherrer Institute... Read more »
Rau, I., Baumann, S., Rusponi, S., Donati, F., Stepanow, S., Gragnaniello, L., Dreiser, J., Piamonteze, C., Nolting, F., Gangopadhyay, S.... (2014) Reaching the Magnetic Anisotropy Limit of a 3d Metal Atom. Science. DOI: 10.1126/science.1252841
A fully degradable bioplastic isolated from shrimp shells could provide a solution to planet-clogging plastics
Environment & Sustainability Harvard’s Wyss Institute... Read more »
Fernandez, J., & Ingber, D. (2014) Manufacturing of Large-Scale Functional Objects Using Biodegradable Chitosan Bioplastic. Macromolecular Materials and Engineering. DOI: 10.1002/mame.201300426
The galaxy known as M87 has a fastball that would be the envy of any baseball pitcher. It has thrown an entire star cluster toward us at more than two million miles per hour. The newly discovered cluster, which astronomers named HVGC-1, is now on a fast journey to nowhere. Its fate: to drift through the void between the galaxies for all time.
News release April 30, 2014 HARVARD-SMITHSONIAN CENTER FOR ASTROPHYSICS... Read more »
Nelson Caldwell, Jay Strader, Aaron J. Romanowsky, Jean P. Brodie, Ben Moore, Jurg Diemand, & Davide Martizzi. (2014) A Globular Cluster Toward M87 with a Radial Velocity . Cornell University Library. arXiv: 1402.6319v2
For the first time an international team of astronomers has measured circular polarisation in the bright flash of light from a dying star collapsing to a black hole, giving insight into an event that happened almost 11 billion years ago.
New insights into gamma-ray Burst afterglows-Niels Bohr Institute University of Copenhagen
Astronomers observe corkscrew nature of light from a distant black hole - Curtin University
Study of Gamma-Ray Bursts afterglow surprises scientists -University o........ Read more »
Wiersema, K., Covino, S., Toma, K., van der Horst, A., Varela, K., Min, M., Greiner, J., Starling, R., Tanvir, N., Wijers, R.... (2014) Circular polarization in the optical afterglow of GRB 121024A. Nature. DOI: 10.1038/nature13237
A new study from the University of Toronto Scarborough suggests the search for life on planets outside our solar system may be more difficult than previously thought.
The study, authored by a team of international researchers led by UTSC Assistant Professor Hanno Rein from the Department of Physical and Environmental Science, finds the method used to detect biosignatures on such planets, known as exoplanets, can produce a false positive result.
News release Apr 29, 2014 By Don Campbell Uni........ Read more »
Rein, H., Fujii, Y., & Spiegel, D. (2014) Some inconvenient truths about biosignatures involving two chemical species on Earth-like exoplanets. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.1401816111
If you think Neanderthals were stupid and primitive, it’s time to think again.
The widely held notion that Neanderthals were dimwitted and that their inferior intelligence allowed them to be driven to extinction by the much brighter ancestors of modern humans is not supported by scientific evidence, according to a researcher at the University of Colorado Boulder.
News release April 30, 2014 University of Colorado Boulder... Read more »
Villa, P., & Roebroeks, W. (2014) Neandertal Demise: An Archaeological Analysis of the Modern Human Superiority Complex. PLoS ONE, 9(4). DOI: 10.1371/journal.pone.0096424
Mice and rats stressed by male experimenters; reaction may skew research findings.
Scientists’ inability to replicate research findings using mice and rats has contributed to mounting concern over the reliability of such studies.
News release April 28, 2014 McGill University... Read more »
Sorge, R., Martin, L., Isbester, K., Sotocinal, S., Rosen, S., Tuttle, A., Wieskopf, J., Acland, E., Dokova, A., Kadoura, B.... (2014) Olfactory exposure to males, including men, causes stress and related analgesia in rodents. Nature Methods. DOI: 10.1038/nmeth.2935
The chemical reactions behind metabolism – the processes that occur within all living organisms in order to sustain life – may have formed spontaneously in the Earth’s early oceans, according to research published today.
The basic architecture of the modern metabolic network could have originated from the chemical and physical constraints that existed on Earth billions of years ago
Research News April 25, 2014 University of Cambridge... Read more »
Markus A Keller, Alexandra V Turchyn, & Markus Ralser. (2014) Non‐enzymatic glycolysis and pentose phosphate pathway‐like reactions in a plausible Archean ocean. Molecular Systems Biology, 10(4). DOI: Mol Syst Biol 2014;10:725
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