All posts; Tags Include "Evolutionary Anthropology"
- May 9, 2014
- 05:40 AM
- 1,146 views
At the frontiers of magnetism
by Perikis Livas in Chilon
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
- May 6, 2014
- 12:14 PM
- 995 views
Chitosan Bioplastic
by Perikis Livas in Chilon
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
- May 2, 2014
- 04:03 AM
- 1,450 views
Entire Star Cluster Thrown Out of its Galaxy
by Perikis Livas in Chilon
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
- May 1, 2014
- 03:45 PM
- 1,245 views
Shockwave findings set to rewrite scientific theories
by Perikis Livas in Chilon
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
- May 1, 2014
- 02:01 PM
- 1,407 views
Search for life on exoplanets more difficult than thought
by Perikis Livas in Chilon
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
- May 1, 2014
- 01:08 PM
- 1,298 views
Neanderthals were not inferior to modern humans
by Perikis Livas in Chilon
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
- April 30, 2014
- 08:17 AM
- 1,076 views
The scent of a man
by Perikis Livas in Chilon
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
- April 27, 2014
- 04:18 PM
- 1,236 views
Metabolism may have started in our early oceans before the origin of life
by Perikis Livas in Chilon
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
__Markus Ralser
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
- April 27, 2014
- 07:23 AM
- 1,000 views
What Lies Beneath Modern New England ?
by Perikis Livas in Chilon
Mountain-Building and the End of An Ancient Ocean
When and where did the ancient Iapetus Ocean suture (the most fundamental Appalachian structure) form?
Is part of New England made up of ancient African-derived rocks?
What is the Moretown terrane?
This new GEOLOGY study by researchers from Harvard, Middlebury College, Boise State University, and Williams College finds new evidence for an earlier closing of the Iapetus that is farther west than previous studies have reported.
A........ Read more »
Macdonald, F., Ryan-Davis, J., Coish, R., Crowley, J., & Karabinos, P. (2014) A newly identified Gondwanan terrane in the northern Appalachian Mountains: Implications for the Taconic orogeny and closure of the Iapetus Ocean. Geology. DOI: 10.1130/G35659.1
- April 25, 2014
- 05:20 AM
- 1,759 views
Cosmic illusion revealed
by Perikis Livas in Chilon
Kashiwa Japan – A team of researchers led by Robert Quimby at the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) has announced the discovery of a galaxy that magnified a background, Type Ia supernova thirtyfold through gravitational lensing. This is the first example of strong gravitational lensing of a supernova confirms the team’s previous explanation for the unusual properties of this supernova.
News release April 25, 2014 Kavli Institute for ........ Read more »
Quimby, R., Oguri, M., More, A., More, S., Moriya, T., Werner, M., Tanaka, M., Folatelli, G., Bersten, M., Maeda, K.... (2014) Detection of the Gravitational Lens Magnifying a Type Ia Supernova. Science, 344(6182), 396-399. DOI: 10.1126/science.1250903
- April 10, 2014
- 10:44 AM
- 1,265 views
Saturn’s hexagon: an amazing phenomenon
by Perikis Livas in Chilon
Researchers at the Planetary Sciences Group of the UPV/EHU-University of the Basque Country reveal some of the secrets of Saturn’s mysterious hexagonal wave, including its rotation period, which could be that of the planet itself
News Release April 8, 2014 University of the Basque Country... Read more »
Sánchez-Lavega, A., del Río-Gaztelurrutia, T., Hueso, R., Pérez-Hoyos, S., García-Melendo, E., Antuñano, A., Mendikoa, I., Rojas, J., Lillo, J., Barrado-Navascués, D.... (2014) The long-term steady motion of Saturn's hexagon and the stability of its enclosed jet stream under seasonal changes. Geophysical Research Letters, 41(5), 1425-1431. DOI: 10.1002/2013GL059078
- April 10, 2014
- 08:54 AM
- 1,149 views
How plants become zombies
by Perikis Livas in Chilon
Forget popular video game Plants Vs. Zombies, some plants are zombies and scientists have uncovered how bacterial parasites turn them into the living dead.
News Release APRIL 8, 2014 John Innes Centre... Read more »
MacLean, A., Orlovskis, Z., Kowitwanich, K., Zdziarska, A., Angenent, G., Immink, R., & Hogenhout, S. (2014) Phytoplasma Effector SAP54 Hijacks Plant Reproduction by Degrading MADS-box Proteins and Promotes Insect Colonization in a RAD23-Dependent Manner. PLoS Biology, 12(4). DOI: 10.1371/journal.pbio.1001835
- April 10, 2014
- 06:38 AM
- 1,156 views
Study Tests Theory that Life Originated at Deep Sea Vents
by Perikis Livas in Chilon
One of the greatest mysteries facing humans is how life originated on Earth. Scientists have determined approximately when life began (roughly 3.8 billion years ago), but there is still intense debate about exactly how life began. One possibility has grown in popularity in the last two decades – that simple metabolic reactions emerged near ancient seafloor hot springs, enabling the leap from a non-living to a living world.
News Release April 9, 2014 Media Relations Office Woods Hole Oce........ Read more »
Reeves EP, McDermott JM, & Seewald JS. (2014) The origin of methanethiol in midocean ridge hydrothermal fluids. Proceedings of the National Academy of Sciences of the United States of America. PMID: 24706901
- April 9, 2014
- 08:01 AM
- 1,490 views
From Quark Soup to Matter
by Perikis Livas in Chilon
Tracking the Transition of Early-Universe Quark Soup to Matter-as-we-know-it
New evidence from the Relativistic Heavy Ion Collider reveals different kinds of phase changes at different collision energies... Read more »
STAR Collaboration, L. Adamczyk, J. K. Adkins, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, I. Alekseev, J. Alford, C. D. Anson, A. Aparin.... (2014) Beam-Energy Dependence of Directed Flow of Protons, Antiprotons and Pions in Au Au Collisions. Cornell University Library. arXiv: 1401.3043v2
- April 6, 2014
- 10:38 AM
- 921 views
Like a giant elevator to the stratosphere
by Perikis Livas in Chilon
Recent research results show that an atmospheric hole over the tropical West Pacific is reinforcing ozone depletion in the polar regions and could have a significant influence on the climate of the Earth.... Read more »
Rex, M., Wohltmann, I., Ridder, T., Lehmann, R., Rosenlof, K., Wennberg, P., Weisenstein, D., Notholt, J., Krüger, K., Mohr, V.... (2013) A Tropical West Pacific OH minimum and implications for stratospheric composition. Atmospheric Chemistry and Physics Discussions, 13(11), 28869-28893. DOI: 10.5194/acpd-13-28869-2013
- April 3, 2014
- 10:30 AM
- 1,084 views
Νew insights into quantum dynamics and quantum chaos
by Perikis Livas in Chilon
A team of researchers led by University of Notre Dame physicist Boldizsar Janko has announced analytical prediction and numerical verification of novel quantum rotor states in nanostructured superconductors.... Read more »
Lin SH, Milošević MV, Covaci L, Jankó B, & Peeters FM. (2014) Quantum rotor in nanostructured superconductors. Scientific reports, 4542. PMID: 24686241
- March 27, 2014
- 05:18 PM
- 1,202 views
First sightings of solar flare phenomena
by Perikis Livas in Chilon
Video of magnetic field lines “slipping reconnection” bring scientists a step closer to predicting when and where large flares will occur.
Human civilisation is nowadays maintained by technology and that technology is vulnerable to space weather
Dr Jaroslav Dudik
News Release March 27, 2014 University of Cambridge... Read more »
Dudík, J., Janvier, M., Aulanier, G., Del Zanna, G., Karlický, M., Mason, H., & Schmieder, B. (2014) SLIPPING MAGNETIC RECONNECTION DURING AN X-CLASS SOLAR FLARE OBSERVED BY /AIA . The Astrophysical Journal, 784(2), 144. DOI: 10.1088/0004-637X/784/2/144
- March 27, 2014
- 07:19 AM
- 1,090 views
Kelvin Waves on Quantum
by Perikis Livas in Chilon
Kelvin Wave Seen on Quantum “Tornado” for First Time
” We weren’t surprised to see the Kelvin waves on the quantum vortex, but we were excited to see them because they had never been seen before. Seeing the Kelvin waves provided the first experimental evidence that previous theories predicting they would be launched from vortex reconnection were correct. “
Daniel Lathrop
UMD physics professor
News Release March 25, 2014 University of Maryland... Read more »
Fonda, E., Meichle, D., Ouellette, N., Hormoz, S., & Lathrop, D. (2014) Direct observation of Kelvin waves excited by quantized vortex reconnection. Proceedings of the National Academy of Sciences, 111(Supplement_1), 4707-4710. DOI: 10.1073/pnas.1312536110
- March 18, 2014
- 01:38 PM
- 925 views
Is Liangdao man the oldest Austronesian?
by nath in Imprints of Philippine Science
Genetic analyses say that the Liangdao Man “has the most ancestral haplogroup E sequence among extant Austronesian speakers [1].” Lingdao …Continue reading →... Read more »
Ko, A., Chen, C., Fu, Q., Delfin, F., Li, M., Chiu, H., Stoneking, M., & Ko, Y. (2014) Early Austronesians: Into and Out Of Taiwan. The American Journal of Human Genetics, 94(3), 426-436. DOI: 10.1016/j.ajhg.2014.02.003
Soares, P., Trejaut, J., Loo, J., Hill, C., Mormina, M., Lee, C., Chen, Y., Hudjashov, G., Forster, P., Macaulay, V.... (2008) Climate Change and Postglacial Human Dispersals in Southeast Asia. Molecular Biology and Evolution, 25(6), 1209-1218. DOI: 10.1093/molbev/msn068
Tabbada, K., Trejaut, J., Loo, J., Chen, Y., Lin, M., Mirazon-Lahr, M., Kivisild, T., & De Ungria, M. (2009) Philippine Mitochondrial DNA Diversity: A Populated Viaduct between Taiwan and Indonesia?. Molecular Biology and Evolution, 27(1), 21-31. DOI: 10.1093/molbev/msp215
- March 18, 2014
- 07:48 AM
- 901 views
Fine-Tuning Stephen Hawking’s Theory of Mass
by Perikis Livas in Chilon
If you want to know your body’s mass, you hop on a scale and watch the needle swing. But if you want to know the mass of a region out in space, there’s no cosmic equivalent — the best you can do is consult a geometric formula.... Read more »
Hubert L. Bray, Jeffrey L. Jauregui, & Marc Mars. (2014) Time flat surfaces and the monotonicity of the spacetime Hawking mass II. Cornell University Library. arXiv: 1402.3287v1
Hubert L. Bray, & Jeffrey L. Jauregui. (2013) Time flat surfaces and the monotonicity of the spacetime Hawking mass. Cornell University Library. arXiv: 1310.8638v2
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