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giovedì 6 luglio 2017

# s-brain: to distinguish between reality and imagination

<< neurons in the part of the brain found to be abnormal in psychosis are also important in helping people distinguish between reality and imagination >>

AA << investigated how the brain codes visual information in reality versus abstract information in our working memory and how those differences are distributed across neurons in the lateral prefrontal cortex region of the brain >>

Crystal Mackay. Researchers identify specific neurons that distinguish between reality and imagination. June 1, 2017

http://mediarelations.uwo.ca/2017/06/01/researchers-identify-specific-neurons-distinguish-reality-imagination/

AA << results indicate that a functionally diverse population of LPFC (lateral prefrontal cortex) neurons provides a substrate for discriminating between perceptual and mnemonic representations of visual features >>

Diego Mendoza-Halliday & Julio C. Martinez-Trujillo. Neuronal population coding of perceived and memorized visual features in the lateral prefrontal cortex. Nature Comm. 8, Article no: 15471 (2017) doi: 10.1038/ncomms15471 Publ. Jun 01,  2017

https://www.nature.com/articles/ncomms15471

mercoledì 5 luglio 2017

# s-gst: una immagine del reale: il gomitolo "vibrazionale"

una immagine del reale: il gomitolo "vibrazionale"  (pseudo quasi- stocastico) dalle spiccate proprieta' autoassemblanti ...

https://pbs.twimg.com/media/DDl3AECWAAA8qTw?format=jpg&name=small

<< Mitotic chromosome assembly remains a big mystery in biology >>

Ewa Piskadlo, Alexandra Tavares,  Raquel A Oliveira. Metaphase  chromosome structure is  dynamically maintained by condensin I-directed DNA (de)catenation. doi: 10.7554/eLife.26120 May 6, 2017

https://elifesciences.org/articles/26120

Also

immagini di "gomitolo" circa ipotetici altri scenari (espressi in rime quasistocastiche):

http://inkpi.blogspot.it/search?q=gomitolo

martedì 4 luglio 2017

# s-zoo: live with stress in a salamander

<< During embryonic development, cells of the green alga Oophila amblystomatis enter cells of the salamander Ambystoma maculatum forming an endosymbiosis >>

A << two-by-two-way analysis revealed that intracellular algae exhibit hallmarks of cellular stress and undergo a striking metabolic shift from oxidative metabolism to fermentation >>

<< In stark contrast to its algal endosymbiont, the salamander cells did not exhibit major stress responses, suggesting that the host cell experience is neutral or beneficial >>

John A  Burns et al. Transcriptome  analysis illuminates the nature of  the intracellular interaction in a  vertebrate-algal symbiosis. doi: 10.7554/eLife.22054.001 May  2,  2017.

https://elifesciences.org/articles/22054

https://mobile.twitter.com/eLife/status/880789310194233345

The struggle to live in a salamander. In  the symbiotic  relationship formed between algae and salamanders, only the  algae show stress. June 30, 2017

https://medium.com/life-on-earth/the-struggle-to-live-in-a-salamander-a4a96a326114

sabato 1 luglio 2017

# s-chem: more on the anomalous properties of water

<< Most of us know that water is essential for our existence on planet Earth. It is less well-known that water has many strange or anomalous properties and behaves very differently from all other liquids >>

<< Some examples are the melting point, the density, the heat capacity, and all-in-all there are more than 70 properties of water that differ from most liquids >>

<< These anomalous properties of water are a prerequisite for life as we know it >>

<< "The new remarkable property is that we find that water can exist as two different liquids at low temperatures where ice crystallization is slow" >> Anders Nilsson.

Water exists as two different liquids. June 26, 2017.

https://m.phys.org/news/2017-06-liquids.html

Fivos Perakisa, Katrin Amann-Winkela, et al. Diffusive dynamics during the  high-to-low density transition in amorphous ice. PNAS 2017 doi: 10.1073/pnas.1705303114.

http://m.pnas.org/content/early/2017/06/23/1705303114

venerdì 30 giugno 2017

# p-usa: #POTUS Donald, a black eye at a sensitive moment ...

<< The resignations are a black eye at a sensitive moment for the news organization, which has emerged as a regular target of Mr. Trump and his supporters >>

<< Thomas Frank, a veteran reporter who wrote the story; Lex Haris, executive editor of investigations; and Eric Lichtblau, an investigative editor and reporter hired from The New York Times in April, submitted resignations on Monday morning. >>

Michael M. Grynbaum. 3 CNN Journalists Resign After Retracted Story on Trump Ally. June 26, 2017

https://mobile.nytimes.com/2017/06/26/business/3-cnn-journalists-resign-after-retracted-story-on-trump-ally.html

La Cnn inciampa sulla "fake news" su Trump: si dimettono in 3 e The Donald esulta: "Wow! - Falso scoop di tre giornalisti di punta su presunti legami con il Cremlino assesta un duro colpo alla reputazione della rete all-news. 27/06/2017.

http://m.huffingtonpost.it/2017/06/27/la-cnn-inciampa-sulla-fake-news-su-trump-si-dimettono-in-3-e_a_23003782/

<< Wow, CNN had to retract big story on "Russia," with 3 employees forced to resign. >> 12:33 PM · 27 giu 2017

https://mobile.twitter.com/realDonaldTrump/status/879648931172556802

Also

http://flashontrack.blogspot.it/search?q=potus

http://flashontrack.blogspot.it/search?q=donald

giovedì 29 giugno 2017

# s-astro: a wicked list in the dino-killing range; waiting for new entries

<< Throughout its 4.5-billion-year history, Earth has been repeatedly pummelled by space rocks that have caused anything from an innocuous splash in the ocean to species annihilation. >>

<< It may not happen in our lifetime (..) but "the risk that Earth will get hit in a devastating event one day is very high." >>

<< "We are not ready to defend ourselves" against an Earth-bound object (..) "We have no active planetary defence measures.". Rolf Densing.

Mariette Le Roux. Are asteroids humanity's 'greatest challenge'? June 28, 2017

https://m.phys.org/news/2017-06-asteroids-humanity-greatest.html

FonT

Qui una poetica (quasistocastica) sul "ciottolo Apophis"

http://inkpi.blogspot.it/2006/05/2001-il-ciottolo-apophis.html

mercoledì 28 giugno 2017

# s-phyto: they may selectively kill part of the self

<< Plants adopt different strategies to survive the changing temperatures of their natural environments. This is most evident in temperate regions where forest trees shed their leaves to conserve energy during the cold season. In a new study, a team of plant biologists found that some plants may selectively kill part of their roots to survive under cold weather conditions >>

Plants sacrifice “daughters” to survive chilly weather. 23 June 2017

http://news.nus.edu.sg/press-releases/plants-sacrifice-survive-chilly-weather

Jing Han Hong, Maria Savina, et al. A Sacrifice-for-Survival Mechanism Protects Root Stem Cell Niche from Chilling Stress. Cell 2017; doi: 10.1016/j.cell.2017.06.002 Publ. June 22, 2017

http://www.cell.com/cell/fulltext/S0092-8674(17)30643-8

FonT: una sorta di "Novacula Occami" ...

https://it.m.wikipedia.org/wiki/Rasoio_di_Occam