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lunedì 18 gennaio 2016

domenica 17 gennaio 2016

# s-behav: no multitasking, please

<< Ants are hard workers, but they’re not multitaskers: They have to stop to think >>

<< While exploring, a Temnothorax albipennis worker ant (..) alternates between moving and pausing. An ant processes incoming chemical information only while stalled >>

https://www.sciencenews.org/article/ants-dont-make-decisions-move

Edmund R. Hunt, Roland J. Baddeley, et al. Ants determine their next move at rest: motor planning and causality in complex systems. Royal Society Open Science. Published online January 13, 2016.  doi: 10.1098/rsos.15034.

http://rsos.royalsocietypublishing.org/content/3/1/150534

# s-brain: stress, differences between the sexes

<< Men and women react differently to stress. Animal studies suggest the root of the difference is messaging within the brain >>

<< But until recently, studies of people’s responses to such stress have focused primarily on men >>

Susan Gaidos. Scientists puzzle over why men and women react differently to pressure. 2:30PM, JANUARY 11, 2016

https://www.sciencenews.org/article/his-stress-not-her-stress

sabato 16 gennaio 2016

# s-behav: sophisticated communication

<< Flirting is a full-scale production for torrent frogs >>

https://www.sciencenews.org/blog/science-ticker/torrent-frog-flirting-complicated

Fábio P. de Sá, Juliana Zina, Célio F. B. Haddad. Sophisticated Communication in the Brazilian Torrent Frog Hylodes japi. PLoS ONE 11(1): e0145444. doi:10.1371/journal.pone.0145444

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0145444

# s-chem: fuel from air

<< A highly efficient homogeneous catalyst system for the production of CH3OH from CO2 using pentaethylenehexamine and Ru-Macho-BH (1) at 125–165 °C in an ethereal solvent has been developed (initial turnover frequency = 70 h–1 at 145 °C) >>

<< Various sources of CO2 can be used for this reaction including air, despite its low CO2 concentration (400 ppm) >>

Jotheeswari Kothandaraman, Alain Goeppert, et al. Conversion of CO2 from Air into Methanol Using a Polyamine and a Homogeneous Ruthenium Catalyst. Journal of the American Chemical Society. December 29, 2015. DOI: 10.1021/jacs.5b12354

http://pubs.acs.org/doi/10.1021/jacs.5b12354

Andy Extance. Carbon dioxide-to-methanol catalyst ignites ‘fuel from air’ debate. 14 January 2016

http://www.rsc.org/chemistryworld/2016/01/fuel-air-carbon-dioxide-capture-methanol-renewable-energy

https://twitter.com/ChemistryWorld/status/687852980238860288

venerdì 15 gennaio 2016

# s-brain: distinct cortical pathways for music and speech

<< for the first time, MIT neuroscientists have identified a neural population in the human auditory cortex that responds selectively to sounds that people typically categorize as music, but not to speech or other environmental sounds >>

http://bioengineer.org/music-in-the-brain/

Sam Norman-Haignere, Nancy G. Kanwisher, Josh H. McDermott. Distinct Cortical Pathways for Music and Speech Revealed by Hypothesis-Free Voxel Decomposition. DOI: http://dx.doi.org/10.1016/j.neuron.2015.11.035 |

http://www.cell.com/neuron/abstract/S0896-6273(15)01071-5