sabato 19 agosto 2017

# phyto: feel sounds to spot water

AA << used the model plant Pisum sativum to investigate the mechanism by which roots sense and locate water >>

AA << found that roots were able to locate a water source by sensing the vibrations generated by water moving inside pipes, even in the absence of substrate moisture. When both moisture and acoustic cues were available, roots preferentially used moisture in the soil over acoustic vibrations, suggesting that acoustic gradients enable roots to broadly detect a water source at a distance, while moisture gradients help them to reach their target more accurately >>

AA << results also showed that the presence of noise affected the abilities of roots to perceive and respond correctly to the surrounding soundscape >>

Monica Gagliano, Mavra Grimonprez, et al. Tuned in: plant roots use sound to locate water. Oecologia. Volume 184, Issue 1, pp 151–160. May 2017

venerdì 18 agosto 2017

# websec: everyone is a target (N3v$r M1^d!), by Kevin

<< At the end of the day, Cardwell [Kevin Cardwell] notes that "no product will make you secure." What's important is setting up a process of defenses because he says, "everyone is a target." >>

Leah Becerra. How to protect your data from cyberattacks. The Kansas City Star. May 25, 2017


<< “Much of what I did I now regret,” Burr [Bill Burr], who is now retired, told the Wall Street Journal. “In the end, it was probably too complicated for a lot of folks to understand very well, and the truth is, it was barking up the wrong tree.” >>

James Titcomb. Password guru who told the world to make them complicated admits: I got it completely wrong. 8 Aug 8, 2017

Robert McMillan. The Man Who Wrote Those Password Rules Has a New Tip: N3v$r M1^d! Aug. 7, 2017

giovedì 17 agosto 2017

# s-acad: the nomad razor by Richard

<< Over drinks one evening, a Christian journalist described witnessing an episode of faith healing. Instead of dismissing the story outright, Dawkins pressed for details >>

<< Some people define atheism as a positive conviction that there are no gods and agnosticism as allowing for the possibility, however slight. In this sense I am agnostic, as any scientist would be. But only in the same way I am agnostic about leprechauns and fairies. Other people define agnosticism as the belief that the existence of gods is as probable as their nonexistence.  In this sense I am certainly not agnostic >> Richard Dawkins

John  Horgan.  Richard Dawkins Offers Advice for Donald Trump, and Other Wisdom. Aug 10, 2017.

mercoledì 16 agosto 2017

# s-behav: they behave strangely in the darkness caused by a solar eclipse

<< Many accounts of solar eclipses include tales of animals behaving strangely >>

<< There’s a lot of anecdotal evidence for how animals and even plants respond to totality [of solar eclipses] >>

<< Crickets chirped and frogs croaked [..]  Gnats and mosquitoes swarmed [..] Bees returned to hives and chickens to roost >>

<< small, light-sensitive crustaceans and zooplankton swam upward toward the dark during eclipses, similar to how the tiny animals behave at night >>

<< The sun’s disappearance prompted orb weaver spiders to take down their webs >>

<< captive chimpanzees scaled a climbing structure and faced the blocked sun >>

Lisa Grossman. What do plants and animals do during an eclipse?
A citizen science project aims to gather data to put science behind anecdotal evidence. Aug 12, 2017

<< The behavior of colonial orb-weaving spiders (Metepeira incrassata) in tropical Veracruz, Mexico was studied during the total solar eclipse on July 11, 1991. Spiders behaved in a manner typical of daily activity until totality, when many began taking down webs. After solar reappearance, most spiders that had begun taking down webs rebuilt them >>

Uetz, G.W., Hieber, C.S., et al.     Behavior of Colonial Orb-weaving Spiders during a Solar Eclipse. Ethology, 96: 24–32. Jan 12, 1994. doi:10.1111/j.1439-0310.1994.tb00878.x

<< This year, the California Academy of Sciences is soliciting citizen scientists to record their observations of any animals they see using the academy’s iNaturalist app >>

Solar Eclipse 2017: Life Responds.

domenica 13 agosto 2017

# n-soc: charlottesville, what to do now, by Jeffrey

<< The question is: what to do now? The answer lies in the source of the problem. The huge mess began with bad ideas. The only means available – and it is the most powerful – is to fight bad ideas with good ideas. >>

<< What are those good ideas?  The progress of the last 500 years shows us precisely what the good ideas are: social harmony, human rights, the aspiration of universal dignity, the conviction that we can work together in mutual advantage, the market economy as a means of peace and prosperity, and, above all else, the beauty and magnificence of the idea of liberty itself. >>

Jeffrey A. Tucker. The Violence in Charlottesville. Aug 12, 2017


# n-laws: nashville looks back. Apr 8, 2016.

sabato 12 agosto 2017

# s-evol: nomadic pulses: when dinosaurs ruled the earth, they took to the skies ...

<< New fossil discoveries show that prehistoric “squirrels” glided through forests at least 160 million years ago, long before scientists had thought >>

<< In a study published on Wednesday, a team of paleontologists added some particularly fascinating new creatures to the Mesozoic Menagerie. These mammals did not lurk in the shadows of dinosaurs >>

Carl Zimmer. When Dinosaurs Ruled the Earth, Mammals Took to the Skies. August 9, 2017

<< Two new eleutherodonts from the Late Jurassic period have skin membranes and skeletal features that are adapted for gliding >>

Qing-Jin Meng,David M. Grossnickle, et al. New gliding mammaliaforms from the Jurassic. Nature  (2017) doi:10.1038/nature23476 Publ. Aug 09, 2017

giovedì 10 agosto 2017

# s-gst: they take decisions in a way that is not necessarily uniform (jazzy? funky? fuzzy?)

AA << found that fate decision is not a unique programmed event, but the result of a very dynamic process composed of spontaneous fluctuation and selective stabilisation of alternative cellular states >>

<< The whole process is reminiscent of trial-and-error learning in which each cell explores—at its own rhythm and independently of cell division—different molecular possibilities (i.e. different genes turned on or off) before reaching a stable combination of active genes and the corresponding morphology >>

AA << observed that some cells seem to "hesitate" and change morphology many times before reaching a stable state >>

Which type of cell to become: Decision through indecision.
July 27, 2017

<< Individual cells take lineage commitment decisions in a way that is not necessarily uniform >>

AA << identifies a new category of cells with fluctuating phenotypic characteristics, demonstrating the complexity of the fate decision process >>

Alice Moussy, Jérémie Cosette, et al. Integrated time-lapse and single-cell transcription studies highlight the variable and dynamic nature of human hematopoietic cell fate commitment. PLoS Biol 15(7): e2001867 doi: 10.1371/journal.pbio.2001867


in pratica un lancio di dadi, ... quasi.

<< Amico, qualunque  cosa suonerai . . . >>

mercoledì 9 agosto 2017

# s-phyto: mRNA instability may facilitate rapid recovery of plants after stressful events

<< Stress recovery may prove to be a promising approach to increase plant performance, and theoretically, mRNA instability may facilitate faster recovery.   Transcriptome (RNA-seq, qPCR, sRNA-seq, PARE) and methylome profiling during repeated excess-light stress and recovery was performed at intervals as short as three minutes >>

AA << demonstrate that 87% of the stress-upregulated mRNAs analysed exhibit very rapid recovery >>

Peter Alexander Crisp, Diep Ganguly, et al.  Rapid recovery gene downregulation during excess-light stress and recovery in Arabidopsis. The Plant Cell Publ. July 2017 doi: 10.1105/tpc.16.00828

martedì 8 agosto 2017

# s-esobio: self-assembled azotosomes by convective activity, a kind of proto-life on Titan.

<< vinyl cyanide (C2H3CN; also known as acrylonitrile or propenenitrile) would be the best candidate species for the formation of (..) cell-like membranes, known as “azotosomes” >>

AA << report the first spectroscopic detection of vinyl cyanide in Titan’s atmosphere, obtained using archival data from the Atacama Large Millimeter/submillimeter Array (ALMA), collected from February to May 2014 >>

AA << detect the three strongest rotational lines of C2H3CN in the frequency range of 230 to 232 GHz, each with >4σ confidence >>

the << production rate of vinyl cyanide and its saturation mole fraction imply the availability of sufficient dissolved material to form ~107 cell membranes/cm3 in Titan’s sea Ligeia Mare (Titan's second largest liquid body) >>

<< Reactions of hydrocarbons with hydrogen, both readily available on Titan, release energy, which could provide support for methanogenic life. The sedimentation time of atmospheric organics depends on the particle size and convective activity in the troposphere. This coupling of Titan’s atmosphere and surface completes the picture regarding the astrobiological importance of (..) detection of vinyl cyanide in Titan’s middle/upper atmosphere >>

Maureen Y. Palmer, Martin A. Cordiner, et al. ALMA detection and astrobiological potential of vinyl cyanide on Titan. Science Advances  28 Jul 2017: Vol. 3, no. 7, e1700022
doi: 10.1126/sciadv.1700022

lunedì 7 agosto 2017

# s-evol: a noise effect inside: new species pulsating by chance instead of ...

<< W. Andrew Barr, a visiting assistant professor of anthropology, published a report that says it's possible the pulse of new species could have occurred by chance and might not be directly related to climate change >>

Researcher's paper challenges the claim that the genus Homo originated in response to environmental changes. Aug 4, 2017

W. Andrew Barr. Signal or noise? A null model method for evaluating the significance of turnover pulses. Paleobiology 2017 doi: 10.1017/pab.2017.21 Publ. online: 31 July 2017


<< "Nell' Arte tutto e', o dovrebbe essere, un esperimento". Gill Evans. >>

2127 - enigmistiche tonalita'. March 23, 2007

sabato 5 agosto 2017

# s-phys: nanoquakes: driving them by phononic crystals

<< the extreme frequency sound waves - also known as surface acoustic waves [SAW] or 'nanoquakes' , as they run across the surface of a solid material in a similar manner to earthquake tremors on land >>

<< Although surface acoustic waves form a key component of a host of technologies, they have proved extremely difficult to control with any degree of accuracy >>

[AA] << have developed a new type of structure, known as a ' phononic crystal,' which when patterned into a device, can be used to steer and guide the nanoquakes >>

Riding the wave: Pioneering research tames nanoquakes. Aug 2, 2017

<< Phononic crystals can control the propagation of SAW, analogous to photonic crystals, enabling components such as waveguides and cavities >>

B. J. Ash, S. R. Worsfold, et al. A highly attenuating and frequency tailorable annular hole phononic crystal for surface acoustic waves.  Nature Communications 8, Article number: 174 (2017)  doi:10.1038/s41467-017-00278-0

giovedì 3 agosto 2017

# s-esobio: seeking a new "planetary protection officer"

<< Nasa is seeking a new "planetary protection officer" tasked with defending the earth from alien life >>

<< It is not a new idea - the original United Nations treaty on space exploration, signed in 1967, called for space-faring nations to take care about contaminants >>

Planetary protection officer wanted, generous salary. BBC. 02 Aug 2017

<< The mission of the Office of Planetary Protection is to promote the responsible exploration of the solar system by implementing and developing efforts that protect the science, explored environments, and Earth >>

About Planetary Protection. Aug 3, 2017

<< Degree: physical science, engineering, or mathematics that included 24 semester hours in physical science and/or related engineering science such as mechanics, dynamics, properties of materials, and electronics >>

FonT: nella lista dei requisiti desiderabili non sono contemplate le lauree in biologia, biochimica ...

"physical science"

mercoledì 2 agosto 2017

# s-gst: the importance of noise (transcriptional noise) in stem cell. dev., by Wolf et al.

<< Random differences between cells early in development could be the key to making different cells in the body, according to new research from a team co-led by Professor Wolf Reik >>

<< when cells start specialising into different cell types their gene activity becomes more 'noisy' - each cell starts to turn different groups of genes on or off >>

Noise helps cells make decisions: Team reveals the importance of genetic noise in development. Aug 1, 2017

AA << study systematically charts transcriptional noise and uncovers molecular processes associated with early lineage decisions >>

Hisham Mohammed, Irene Hernando-Herraez, et al. Single-Cell Landscape of Transcriptional Heterogeneity and Cell Fate Decisions during Mouse Early Gastrulation. Cell Reports , Volume 20 , Issue 5 , 1215 - 1228 doi: 10.1016/j.celrep.2017.07.009 Publ. Aug 1, 2017

martedì 1 agosto 2017

# s-astro: cosmic nomads, transfers, impacts

a) cosmic nomads

Lee Billings. Wandering in the Void, Billions of Rogue Planets without a Home. New results suggest free-floating giant planets are less common than previously believed, but hint at vast numbers of smaller castaway worlds. July 24, 2017

b) cosmic transfers

Ashley Yeager. Half of the Milky Way comes from other galaxies
Simulations suggest that galactic winds blew the material in from elsewhere. July 26, 2017

Daniel Angles-Alcazar
Claude-Andre Faucher-Giguere
et al. The cosmic baryon cycle and galaxy mass assembly in the FIRE simulations. Mon Not R Astron Soc (2017) 470 (4): 4698-4719. doi: 10.1093/mnras/stx1517
Publ. June 20, 2017

c) cosmic impacts

Jenny Wells. Evidence of impacts that structured the Milky Way galaxy. July 18, 2017

Deborah Ferguson, Susan Gardner, Brian Yanny. Milky Way Tomography with K and M Dwarf Stars: The Vertical Structure of the Galactic Disk. The American Astronomical Society. The Astrophysical Journal, Volume 843, Number 2 . Publ. July 14, 2017.

lunedì 31 luglio 2017

# s-ecol: asymmetric cooperation during symbiosis (among Polynucleobacteria)

<< Relationships where two organisms depend on each other, known as symbiosis, evoke images of partnership and cooperation. But a new study in Nature Ecology and Evolution shows that, when it comes to certain microorganisms, symbiotic partners are actually being held "hostage" >>

Hostage situation or harmony? Researchers rethink symbiosis. July 27, 2017

Vittorio Boscaro, Martin Kolisko, et al.  Parallel genome reduction in symbionts descended from closely related free-living bacteria. Nature Ecology & Evolution 1, 1160–1167 (2017) doi: 10.1038/s41559-017-0237-0 Publ. July 21,  2017

giovedì 27 luglio 2017

# s-game: equilibrium, a chimeric target

<< In 1950, John Nash — the mathematician later featured in the book and film “A Beautiful Mind” — wrote a two-page paper that transformed the theory of economics. His crucial, yet utterly simple, idea was that any competitive game has a notion of equilibrium: a collection of strategies, one for each player, such that no player can win more by unilaterally switching to a different strategy >>

<< Nash’s equilibrium concept, which earned him a Nobel Prize in economics in 1994, offers a unified framework for understanding strategic behavior not only in economics but also in psychology, evolutionary biology and a host of other fields. Its influence on economic theory “is comparable to that of the discovery of the DNA double helix in the biological sciences,” wrote Roger Myerson of the University of Chicago, another economics Nobelist >>

In a paper posted online last September AA << proved that no method of adapting strategies in response to previous games — no matter how commonsensical, creative or clever — will converge efficiently to even an approximate Nash equilibrium for every possible game. It’s “a very sweeping negative result,” Roughgarden (Tim Roughgarden) said >>

Erica Klarreich. In Game Theory, No Clear Path to Equilibrium. July 18, 2017.

Yakov Babichenko, Aviad Rubinstein. Communication complexity of approximate Nash equilibria. arXiv:1608.06580 Sep. 13,  2016

mercoledì 26 luglio 2017

# s-pnei: brain-like activities; syntesis and release of dopamine by T-cells

<< a proportion of human TFH  [follicular helper T] cells contain dense-core granules marked by chromogranin B, which are normally found in neuronal presynaptic terminals storing catecholamines such as dopamine.  TFH cells produce high amounts of dopamine and release it upon cognate interaction with B cells >>

<< faster dopamine-induced T–B-cell interactions increase total germinal centre output and accelerate it by days >>

Ilenia Papa, David Saliba, et al. TFH-derived dopamine accelerates productive synapses in germinal centres. Nature 547, 318–323 (July 20, 2017) doi: 10.1038/nature23013

Kate Prestt. Discovery of brain-like activity in immune system promises better disease treatments. July 13, 2017

martedì 25 luglio 2017

# s-astro: a macro "switch-like" dynamics

AA << propose  that  a  “switch-like”  magnetosphere  exists  at Uranus  in  both  equinox  and  solstice  seasons,  where  the  planetary rotation  drives  the  interchange  between  an  open  magnetosphere  and  a closed  magnetosphere  each  Uranus  day >>

Xin Cao , Carol Paty. Diurnal  and  seasonal  variability  of  Uranus's magnetosphere. Journal  of  Geophysical  Research:  Space  Physics. Vol. 122,  Issue  6, June  2017 Pages  6318–6331 Publ. June 27, 2017 doi:  10.1002/2017JA024063

<< Stay weird, Uranus. We wouldn’t have you any other way >>

Rae Paoletta. Uranus Is Even Freakier Than We Thought. June 23, 2017.

lunedì 24 luglio 2017

# s-chem: self-assembled also into cuboids

<< Phospholipid liposomes are archetypical self-assembled structures. To minimize the surface tension, the vesicles typically are spherical >>

<< A 1,2-diamidophospholipid is presented that self-assembles into a cuboid structure. Owing to intermolecular hydrogen bonding, the bilayer membranes form an exceptionally tight subgel packing, leading to a maximization of flat structural elements and a minimization of any edges. These conditions are optimized in the geometrical structure of a cube >>

Frederik  Neuhaus, Dennis  Mueller, et al. Vesicle  Origami:  Cuboid  Phospholipid  Vesicles  Formed  by Template-Free  Self-Assembly. Angewandte  Chemie  International  Edition.  Vol. 56,  Issue 23, June  1,  2017. Pages  6515–6518. doi: 10.1002/anie.201701634

Phosphorus-containing lipid  molecule self-assembles into a cuboid structure. June  5,  2017

venerdì 21 luglio 2017

# s-astro: the “mudball” model; a terrestrial muddiness from carbonaceous asteroids

<< Scientists have long held the belief that planets – including Earth – were built from rocky asteroids, but new research challenges that view >>

Planets like earth may have had muddy origins. July 14, 2017

<< It would have been a mud, rather than a rock >>

Philip A. Bland, Bryan J. Travis. Giant convecting mud balls of the early solar system. Science  Advances 14 Jul 2017: Vol.  3,  no.  7,  e1602514 doi: 10.1126/sciadv.1602514

giovedì 20 luglio 2017

# s-lang: jazz session during a bird song

<< Music is thought to engage its listeners by driving feelings of surprise, tension, and relief through a dynamic mixture of predictable and unpredictable patterns, a property summarized (..) [by AA] as "expressiveness" >>

<< birds render their songs more expressive by subtly modifying note timing patterns, similar to musical operations like accelerando or ritardando >>

AA << findings bear consequences for neuronal models of vocal sequence generation in birds, as they require non-local rules to generate rhythm >>

Tina C Roeske, Damian Kelty-Stephen, Sebastian Wallot. Birds have swing: Multifractal analysis reveals expressive rhythm in birdsong. BioRxiv June 29, 2017 doi: 10.1101/157594

<< A veery thrush, ready to join the band >>

Michael Le Page. Swinging birds play with rhythm like jazz musicians. July 14, 2017

Lang Elliott. Veery Thrush. June 1, 2010

mercoledì 19 luglio 2017

# s-chem: self-assembling 'origami' nanoscale architectures by DNA staple strands

<< DNA origami is a technique that uses hundreds of short DNA oligonucleotides, called staple strands, to fold a long single-stranded DNA, which is called a scaffold strand, into various designer nanoscale architectures >>

Hong F, Zhang F, et al. DNA Origami: Scaffolds for Creating Higher Order Structures. Chem Rev. 2017 Jun 12. doi: 10.1021/acs.chemrev.6b00825.

martedì 18 luglio 2017

# s-behav: disruptive colouration to gain cryptic benefits (among the reef fish Dascyllus aruanus)

<< Animals use disruptive colouration to prevent detection or recognition by potential predators or prey. Highly contrasting elements within colour patterns, including vertical or horizontal bars, are thought to be effective at distracting attention away from body form and reducing detection likelihood. >>

AA << results provide evidence that fish camouflage is more complex than it initially appears, with likely many factors influencing the detection likelihood of prey by relevant predators >>

Phillips GAC, How MJ, et al. Disruptive colouration in reef fish: does matching the background reduce predation risk?  J Exp Biol. 2017 Jun 1;220 (Pt 11): 1962-1974 doi: 10.1242/jeb.151480

lunedì 17 luglio 2017

# s-gene: epigenetics, more than just genes

<< We are more than the sum of our genes. Epigenetic mechanisms modulated by environmental cues such as diet, disease or lifestyle take a (..) role in regulating the DNA by switching genes on and off >>

AA << focused on a particular modification called H3K27me3 that can also be found in humans >>

Max Planck Society. Epigenetics between the generations: Researchers prove that we inherit more than just genes. July 14, 2017

Fides Zenk, Eva Loeser, et al. Germ line–inherited H3K27me3 restricts enhancer function during maternal-to-zygotic transition. Science  14 Jul 2017: Vol. 357, Issue 6347, pp. 212-216 doi: 10.1126/science.aam5339

sabato 15 luglio 2017

# s-behav: mafia-style among Cuckoos (the brown-headed cowbird Molothrus ater)

<< Why do many hosts accept costly avian brood parasitism even when parasitic eggs and nestlings differ dramatically in appearance from their own? Scientists argue that evolutionary lag or equilibrium can explain this evolutionary enigma. Few, however, consider the potential of parasitic birds to enforce acceptance by destroying eggs or nestlings of hosts that eject parasitic eggs and thereby reject parasitism.  This retaliatory “mafia” behavior has been reported in one species of parasitic cuckoo but never in parasitic cowbirds. >>

AA << present experimental evidence of mafia behavior in the brown-headed cowbird (Molothrus ater ) >>

Jeffrey P. Hoover, Scott K. Robinson. Retaliatory mafia behavior by a parasitic cowbird favors host acceptance of parasitic eggs. PNAS 2007 vol. 104 no. 11: 4479–4483  doi: 10.1073/pnas.0609710104

Andy Coghlan. Cuckoos use mafia-style tactics to raise young.  March 5, 2007

Brown-headed cowbird

venerdì 14 luglio 2017

# e-tech: store data with CRISPR–Cas tech.; biologists have now joined the party

<< Internet users have a variety of format options in which to store their movies, and biologists have now joined the party. Researchers have used the microbial immune system CRISPR–Cas to encode a movie into the genome of the bacterium Escherichia coli. >>

<< “Cells have this privileged access to all sorts of information,” he [Seth Shipman] says. “I would like to have these molecular recordings functioning in the developing nervous system and recording information.” >>

Heidi Ledford. Lights, camera, CRISPR: Biologists use gene editing to store movies in DNA. Technique demonstrated in E. coli suggests ways to record key events in a cell's life. July 12, 2017

Shipman, S. L., Nivala, J., et al. Nature doi: 10.1038/nature23017 (2017).


2073 - a few hints of our presence. Oct 13, 2006.

giovedì 13 luglio 2017

# s-brain: neuro-active areas during the real-time creation of funny stories

<< Unlike passive humor appreciation, the neural correlates of real-time humor creation have been unexplored. >> [!]

<< Greater comedic experience was associated with decreased activation in the striatum and medial prefrontal cortex (mPFC), but increased activation in temporal association regions (TMP).  Less experienced comedians manifested greater activation of mPFC, reflecting their deliberate search through TMP association space. Professionals, by contrast, tend to reap the fruits of their spontaneous associations with reduced reliance on top-down guided search. >>

Ori Amir, Irving Biederman. The Neural Correlates of Humor Creativity. Front. Hum. Neurosci., 25 Nov. 25, 2016 doi: 10.3389/fnhum.2016.00597.

Michelle Boston. Researchers pinpoint the regions of the brain that spark during the telling of a funny story. Feb. 27, 2017.

mercoledì 12 luglio 2017

# s-phys: more about retrocausality

<<  In a new paper (..) [AA] have lent new theoretical support for the argument that, if certain reasonable-sounding assumptions are made, then quantum theory must be retrocausal >>

<< retrocausality means that, when an experimenter chooses the measurement setting with which to measure a particle, that decision can influence the properties of that particle (or another particle) in the past, even before the experimenter made their choice. In other words, a decision made in the present can influence something in the past >>

<< "Speculatively, if there is retrocausality in the universe, then it might be the case that there are certain eras, perhaps near the big bang, in which there is not a definite arrow of causality. You might imagine that a signature of such an era might show up in cosmological data, such as the cosmic microwave background. However, this is very speculative, and I have no idea what signatures we might expect yet." >> Matthew S. Leifer.

<< The physicists don't have any experiments lined up to test retrocausality—but as the idea is more an interpretation of observations rather than making new observations, what's needed most may not be a test but more theoretical support >>

Lisa Zyga. Pysicists provide support for retrocausal quantum theory, in which the future influences the past. July 5,  2017.

Matthew S. Leifer,  Matthew F. Pusey. Is a time symmetric interpretation of quantum theory possible without retrocausality?   Proc. Royal Soc. A. June  2017 Volume 473,  issue 2202 doi: 10.1098/rspa.2016.0607 Publ. Jun. 21, 2017.

martedì 11 luglio 2017

# s-astro: the sonic multiverse, by Gavin Starks

<< A project that explores whether there is a musical equivalent to the curvature of spacetime will be presented on Thursday 6 July by Gavin Starks at the National Astronomy Meeting at the University of Hull >>

AA << aim is to test whether mathematical relationships that describe cosmology and quantum mechanics can be applied to a sonic universe , or 'soniverse' >>

Royal Astronomical Society. Adventures in acoustic cosmology. July 6, 2017

Gavin Starks. Escape into the multiverse. Jan. 27, 2017

lunedì 10 luglio 2017

# s-behav: mimic the sound of musk hogs to avoid being eaten

<< Bird or beast? A cuckoo seems to have learned how to mimic the sounds made by the pig-like peccaries it lives alongside, perhaps to ward off predators >>

Sandrine Ceurstemont. Cuckoos mimic the sound of musk hogs to avoid being eaten. July 3, 2017.

<< Acoustic communication is particularly important in environments such as dense tropical forests, where the dim light constrains the efficacy of visual signals >>

<< In these environments, complex species interactions could promote the evolution of acoustic signals and result in intriguing patterns of mimicry and convergence >>

AA << demonstrate that the acoustic characteristics of bill clacking in ground-cuckoos are more similar to teeth clacking of peccaries than to bill clacking of the more closely related Geococcyx roadrunner >>

Fabio Raposo do Amaral, Gabriel Macedo, et al. Bluffing in the forest: Neotropical Neomorphus ground-cuckoos and peccaries in a possible case of acoustic mimicry. J Avian Biol doi: 10.1111/jav.01266. June 29, 2017

venerdì 7 luglio 2017

# e-web: sending a message without carriers

AA << by using the quantum Zeno effect and a single-photon source, direct communication without carrier particle transmission is implemented successfully >>

Yuan Cao, Yu-Huai Li, et al. Direct counterfactual communication via quantum Zeno effect. PNAS 2017 114 (19) 4920–4924

Joshua Roebke. How to Send a Message without Sending Anything at All. June 27,  2017.

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

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

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 ...

<< 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


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

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.

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

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.

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.

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

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.

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


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


Qui una poetica (quasistocastica) sul "ciottolo Apophis"

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

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

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

lunedì 26 giugno 2017

# s-evol: Burmese python, mechanisms underlying post-feeding regenerations

<< A research team at the University of Texas at Arlington (..)  has been exploring the genomes of snakes and lizards to answer critical questions about these creatures' evolutionary history >>

<< For instance, how did they develop venom?

How do they regenerate their organs?

And how do evolutionarily-derived variations in genes lead to variations in how organisms look and function? >>

Aaron Dubrow. How Pythons Regenerate their Organs and Other Secrets of the Snake Genome. Publ. June 22, 2017

Audra L. Andrew, Blair W. Perry, et al. Growth and stress response mechanisms underlying post-feeding regenerative organ growth in the Burmese python. BMC Genomics 2017 18:338 doi: 10.1186/s12864-017-3743-1 Publ. 2 May 2017

venerdì 23 giugno 2017

# s-gst: coupled solitons jiggle like molecules

<< The first direct observations of how "molecules of light" can vibrate have been made by >> AA << who have characterized the motions of soliton laser pulses that interact with each other in an optical fibre >>

Hamish Johnston. 'Molecules' of light wiggle and jiggle. Jun 19, 2017.

AA << map the internal motion of a soliton pair molecule [..] revealing different categories of internal pulsations, including vibrationlike and phase drifting dynamics >>

AA results << agree well with numerical predictions and bring insights to the analogy between self-organized states of lights and states of the matter >>

Katarzyna Krupa, K. Nithyanandan, et al. Real-Time Observation of Internal Motion within Ultrafast Dissipative Optical Soliton Molecules. Phys. Rev. Lett. 118, 243901 doi: 10.1103/PhysRevLett.118.243901 Publ. 13 June 2017.

giovedì 22 giugno 2017

# e-bot: mimicking the structure of the "powdery alligator-flag" (Thalia dealbata)

<< Versatile, light-weight materials that are both strong and resilient are crucial for the development of flexible electronics, such as bendable tablets and wearable sensors. Aerogels are good candidates for such applications, but until now, it's been difficult to make them with both properties. Now, researchers report in ACS Nano that mimicking the structure of the "powdery alligator-flag" plant [Thalia dealbata] has enabled them to make a graphene-based aerogel that meets these needs. >>

Plant inspiration could lead to flexible electronics. June 21, 2017

Miao Yang, Nifang Zhao, et al. Biomimetic Architectured Graphene Aerogel with Exceptional Strength and Resilience. ACS Nano
doi: 10.1021/acsnano.7b01815 Publ. June 21, 2017

mercoledì 21 giugno 2017

# s-behav: inequity aversion in wolves and dogs

<< inequity aversion was present already in the common—probably cooperative—ancestor of wolves and dogs and thus support the hypothesis of a close link of cooperation and inequity aversion >>

Jennifer L. Essler, Sarah Marshall-Pescini, et al.  Domestication Does Not Explain the Presence of Inequity Aversion in Dogs. Current Biology, Volume 27, Issue 12, 1861 - 1865.e3 Publ. June 8, 2017 doi: 10.1016/j.cub.2017.05.061

Sensitivity to inequity is in wolves’ and dogs’ blood. 08.06.2017

martedì 20 giugno 2017

# s-behav: individuality among Amazon mollies

<< Genetically identical Amazon mollies raised individually and under identical environmental conditions, nevertheless develop different personality types. Additionally, increasing the opportunity for social interactions early in life appears to have no influence of the magnitude of personality variation. >>

AA << team used the Amazon molly, a livebearing Poecilid species. These animals are natural clones, meaning all the offspring of one mother have exactly the same genetic material. >>

Same genes, same environment, different personality: Is  individuality unavoidable? May  17,  2017

David Bierbach, Kate  L.  Laskowski, Max  Wolf. Behavioural  individuality  in  clonal  fish arises  despite  near-identical  rearing conditions. Nature Comm. 8, Article  number:  15361  (2017)  doi :10.1038/ncomms15361 Publ. 17  May  2017

lunedì 19 giugno 2017

# s-brain: all rely on one central function: emulation

<< Our brain's fronto-parietal network is responsible for a range of highly diverse functions, from planning and executing movements to mental rotation, and from spatial attention to working memory. But how can a single network participate in such a wide variety of functions? >>

[AA]  << have recently put forward an original hypothesis — all these cognitive functions rely on one central function: emulation. This function creates an abstract dynamic 'image' of movements, thereby enabling the brain to strengthen its motor skills and construct a precise and lasting representation of them. >>

Acting and thinking — are they the same for our brain?

Radek Ptak, Armin Schnider, Julia Fellrath. The Dorsal Frontoparietal Network: A Core System for Emulated Action. Trends in Cognitive Sciences. Publ. June 01, 2017. doi: 10.1016/j.tics.2017.05.002

domenica 18 giugno 2017

# e-ai: an intriguing hypothesis: cheating that system will become near impossible

<< Blockchain is an online global  database that anyone with an  internet connection can use  anywhere in the world. Unlike  traditional databases that are  owned by central figures like  banks and governments a  blockchain doesn’t belong to  anyone. And with an entire  network looking after it, cheating  the system by faking documents, transactions and other  information will become near  impossible. >>

Magdalena  Gjoshevska. Will the Blockchain Technology transform our economy?

FonT: in pratica l'ipotetica morte "funzionale" dell'attuale sistema bancario ...

sabato 17 giugno 2017

# e-web: a space-based quantum internet, the begin

<< a team of physicists reports that it sent eerily intertwined quantum particles from a satellite to ground stations separated by 1200 kilometers, smashing the previous world record >>

<< Entanglement involves putting objects in the peculiar limbo of quantum superposition, in which an object's quantum properties occupy multiple states at once: like Schrödinger's cat, dead and alive at the same time. Then those quantum states are shared among multiple objects. Physicists have entangled particles such as electrons and photons, as well as larger objects such as superconducting electric circuits >>

Gabriel Popkin. China’s quantum satellite achieves ‘spooky action’ at record distance. Jun. 15, 2017.

Juan Yin, Yuan Cao, et al. Satellite-based entanglement distribution over 1200 kilometers. Science  16 Jun 2017: Vol. 356, Issue 6343, pp. 1140-1144 doi: 10.1126/science.aan3211

venerdì 16 giugno 2017

# n-soc: inside a demonetized world, every(?)thing cheap or free, by Peter ...

<< At Singularity University's Exponential Finance Summit in New York [..], Diamandis [Peter Diamandis] talked about the broad and specific trends he believes are leading to a demonetized world >>

<< The counterbalance to technological unemployment [..] is the demonetization of living — in other words, pretty much everything we need and do in our day-to-day lives is becoming radically cheaper, if not free, and technology's making it happen >>

Vanessa Bates Ramirez. Technology Will Erase Jobs — But Also Make Everything Cheap or Free. Jun  08,  2017

giovedì 15 giugno 2017

# s-behav: flow of non-verbal information among musicians

AA << demonstrated that musicians assigned as leaders affect other performers more than musicians assigned as followers. These effects were present during performance, when musicians could only hear each other, but were magnified when they could also see each other >>

Andrew Chang, Steven R. Livingstone, et al. Body sway reflects leadership in joint music performance. PNAS 2017; 114(21): E4134–E4141.

mercoledì 14 giugno 2017

# s-phys: beyond the Standard Model, a hypothesis

<< A fundamental assumption of the Standard Model is that the interactions of these elementary particles [ leptons: electrons, muons and taus ] are the same despite their different masses and lifetimes >>

<< A new review of results from three experiments points to the strong possibility that lepton universality — and perhaps ultimately the Standard Model itself — may have to be revised >>

<< The rates for some decays involving the heavy lepton tau, relative to those involving the light leptons — electrons or muons — were higher than the Standard Model predictions >>

Julie Cohen. Not So Elementary. June 8, 2017

Gregory Ciezarek, Manuel Franco Sevilla, et al. A challenge to lepton universality in B-meson decays.     Nature 546, 227–233 (08 June 2017) doi: 10.1038/nature22346
Publ. 07 June 2017

martedì 13 giugno 2017

# s-gst: imaging a soliton, first in the centre (of the condensate) rather than at the edges

<< When a periodic waveform is subjected to small perturbations to its amplitude and phase, any nonlinearity in the system can lead to its fragmentation — a so-called modulation instability. The phenomenon often results in the formation of solitons — self-reinforcing solitary wave packets — aligned in a train >>

AA << found that [ in ultracold 7Li atoms ] solitons developed first in the centre of the condensate rather than at the edges, suggesting that the seed for the modulation instability is dominated by noise, which may be technical, thermal or quantum in origin >>

Yun Li. Ultracold gases. Search for the seed. doi:10.1038/nphys4172

Jason H. V. Nguyen, De Luo, Randall G. Hulet. Formation of matter-wave soliton trains by modulational instability. Science 2017, 356 (6336), 422–426. doi: 10.1126/science.aal3220. 28 Apr 2017.

lunedì 12 giugno 2017

# s-phys: photonic ('natural') intelligence: a laser chaos can make decisions

<< [..] over the past several years, researchers have demonstrated that physical objects [..] can also "make decisions" by responding to feedback from their environments >>

AA << has demonstrated that the ultrafast, chaotic oscillatory dynamics in lasers makes these devices capable of decision making and reinforcement learning, which is one of the major components of machine learning >>

<< [..] this is the first demonstration of ultrafast photonic decision making or reinforcement learning, and it opens the doors to future research on "photonic intelligence" >>

AA << utilize the computational power inherent in physical phenomena [..] The computational power of physical phenomena is based on 'infinite degrees of freedom,' and its resulting 'nonlocality of interactions' and 'fluctuations'  >>

AA << call such systems 'natural Intelligence' in contrast to artificial intelligence" >>

Lisa Zyga. Researchers investigate decision-making by physical phenomena. June  2,  2017.

Makoto Naruse, Yuta Terashima, et al. Ultrafast photonic reinforcement learning based on laser chaos. arXiv:1704.04379 [physics.optics]

sabato 10 giugno 2017

# n-art: works in the moment, by Brett

<< “There’s definitely something about working en plein air,” he [Brett Mason] said. “You get a lot of the sights, the sounds, the smells. You’re really kind of involved in the picture.” >>

Allyson Ruggieri, Alexander Popichak, et al. The Three Rivers Arts Festival Brings Color And Whimsy To Pittsburgh. Jun 6, 2017


<< You’re really kind of involved in the picture >> immagine questa che potrebbe ricordare una sorta di immediato Satori; forse e' per questi transitori, ispirati "stati della mente" che certe acicliche  "visioni d'artista" (all'interno del qualsivoglia gomitolo quasistocastico) sono talvolta in-credibilmente "predittive", dirompenti, micidiali perfino ...

giovedì 8 giugno 2017

# p-usa: a placebo effect (2): a rosy picture of POTUS Donald’s 2020 re-election prospects.

<< The White House was bracing for another chaotic week in Washington, awaiting potentially explosive public testimony from the ex-FBI director Donald Trump fired last month.  But nearly 400 miles away, his daughter-in-law  was home in North Carolina, painting a rosy picture of the president’s re-election prospects >>

<< No matter that in Washington, many Republicans are so deeply anxious about whether Donald Trump will damage the 2018 congressional election climate that they can't fathom talking about 2020. With the DC-based Trump family embroiled in crisis after crisis, Lara Trump has taken to the road and to the airwaves,
... >>

Katie Glueck. The face of Donald Trump’s 2020 campaign. Jun 07, 2017


the placebo effect (1):

# p-usa: POTUS race: immediatly, they introduced a placebo within: the "Melania Effect" ... Nov.4, 2016

mercoledì 7 giugno 2017

# s-game: on inspired, then systematic and bounded, generation of "errors" ...

<< When a musician improvises, “the prefrontal cortex is engaged, and one of its functions is conscious self-monitoring, censoring your output (..) That area of the brain is shutting down >>

<< Improvising well means a musician has to shut up the part of the brain that would typically be worried about “wrong” notes, enabling him or her to more easily let go >> Charles Limb

Kristen Page-Kirby. Jazz improvisation (and other types, too) will change your brain. June 1, 2017

Sound Health: Music and the Mind — The Future of Music and the Mind.  June 3, 2017.


2117 - la destra e la sinistra di Hines. Feb. 02, 2007

2124 - attrattore cooperativo bipolare (nell' elastici spigoli). Mar.  05, 2007

"polillo" in:

martedì 6 giugno 2017

# s-cell: turning stem cells into whatever you want (!)

<< an international team of researchers has a two-part system that can convert the cells to the targets and then remove the remnants of that conversion, leaving only the desired DNA behind to duplicate >>

AA << are using a Tet-On 3G inducible PiggyBac system that is a plasmid they named XLone to achieve insertion, activation and removal >>

A'ndrea Elyse Messer. Two-part system turns stem cells into whatever you want. June 5, 2017

Lauren N. Randolph, Xiaoping Bao, et al. An all-in-one, Tet-On 3G inducible PiggyBac system for human pluripotent stem cells and derivatives. Scientific Reports 7, Article number: 1549 (2017) doi: 10.1038/s41598-017-01684-6

lunedì 5 giugno 2017

# s-chem: solar fuels, a catalytic "dance" to drive

AA << have identified a rapid electronic process that could aid the water-splitting reaction in cobalt-containing catalysts. Cobalt catalysts are relatively inexpensive and could replace more expensive precious metal catalysts in the production of clean energy, most notably solar fuels >>

Chemical "dance" of cobalt catalysis could  pave way to solar fuels. June  3,  2017

Casey N. Brodsky, Ryan  G. Hadt, et al. In situ characterization of cofacial Co(IV) centers in CoO cubane: modeling the high-valent active site in oxygen-evolving catalysts.  PNAS (2017) vol. 114 no. 15  pp. 3855–3860 doi: 10.1073/pnas.1701816114

sabato 3 giugno 2017

# n-soc: Andrew calling: the rebellion against Potus Donald's (chaotic) transition

<< In response to news that the United States will withdraw from the Paris climate agreement, Governor Cuomo [Andrew M. Cuomo] joined California Governor Edmund G. Brown and Washington Governor Jay Inslee to announce the United States Climate Alliance, a coalition that will convene U.S. states committed to taking aggressive action on climate change.  If Washington will not act on climate then the states must >>

Governor Cuomo announces the United States Climate Alliance

venerdì 2 giugno 2017

# s-behav: the multifactorial relationship system evolved in Blenny

AA << investigate the evolution of fangs, venom, and mimetic relationships in reef fishes from the tribe Nemophini (fangblennies) >>

Nicholas R. Casewell, Jeroen C. Visser, et al. The Evolution of Fangs, Venom, and Mimicry Systems in Blenny Fishes. Current Biology. Vol 27, Issue 8, p1184–1191, 24 Apr 2017

<<  It’s a good venom story >> Rich Pyle.

Christie Wilcox. Beware the blenny’s bite: scientists uncover the toxins in fang blenny venom.  Mar 30, 2017

<< Si tratta del fang blenny, o blennide dalle zanne (..) noto anche come "senza paura", perche' non sembra temere troppo i predatori >>

Gli oppioidi del blennide. Le Scienze vol 586 p 24 Giu 2017

giovedì 1 giugno 2017

# s-ecol: strange migrations

AA << analyze abundance data over time for 86 tree species/groups across the eastern United States spanning the last three decades >>

AA << show that more tree species have experienced a westward shift (73%) than a poleward shift (62%) in their abundance, a trend that is stronger for saplings than adult trees >>

Songlin Fei, Johanna M. Desprez, et al. Divergence of species responses to climate change. Sci. Adv. 2017; 3:e1603055 17 May 2017

mercoledì 31 maggio 2017

# s-game: people who turn career into a game playing ...

AA << speak to a researcher who's fascinated by what happens to people who turn game playing into a career >>

Annabel Bligh, Emily Lindsay Brown, et al. Anthill 13: All the world’s a game. May 17, 2017 10.04am BST


1618 - etica d'inversione. May 26, 2005 12:16 AM

lunedì 29 maggio 2017

# n-soc: un lavoro per tutti

<< L'obiettivo vero da raggiungere non è il reddito per tutti, ma il lavoro per tutti. Perché senza lavoro per tutti non ci sarà dignità per tutti >>

Anna Maria Brogi, Ilaria Solaini. Genova. Papa Francesco: «Lavoro per tutti, non reddito per tutti».
27 Mag 2017


Anche senza fare conti l'ipotetico  reddito di cittadinanza esteso a tutti i cittadini italiani maggiorenni, di (ad esempio) 1500 - 2000 euro mensili contro una eventuale disponibilita' formativa/ lavorativa di circa 3 ore al giorno costerebbe meno, molto ma molto meno alla comunita' della creazione artificiale, campata in aria, di lavori che gia' oggi (senz'altro domani) l'automazione puo' espletare a bassissimi costi e con senz'altro piu' elevate  accuratezza e riproducibilita'. Anche senza essere Nobel di "Scienze" Economiche chiunque lo puo' capire. Anche  venti / trent'anni fa ... Entro una quindicina d'anni sara' cosa ovvia.

domenica 28 maggio 2017

# gst-chem: growth by random fluctuations in a curvy fractal structure

<< The weaker interaction causes the molecules to slide past each other and dislocate during crystal growth, resulting in an unusual, irregular crystal. According to Guoquing Zhang, ‘at room temperature, there is a high probability that crystal growth will be dictated by random fluctuations, resulting in a curvy fractal structure’ >>

Thomas Foley. Fractal crystals win fashion design contest. 14 May 2017

<< The  crystals  of  1-(4-methoxyphenyl)-3-(pyridin-2-yl)propane-1,3-dione exhibited  rarely  seen  curved  fractal  structures  under  an  optical microscope.  Weak  intermolecular  interactions  may  result  in  dislocation during  crystal  growth  and  thus  the  irregular  crystalline  structures.  The micrographs  of  the  crystals  were  exploited  for  their  artistic  value  and were  transferred  onto  fabrics  for  application  in  fashion  design. >>

Zongzheng Qian, Dongxue Li, et al. Curved fractal  structures  of pyridine-substituted  β-diketone crystals. CrystEngComm. 2017, 19, 2283-2287. doi: 10.1039/C7CE00462A!divAbstract

giovedì 25 maggio 2017

# s-chem: a strange allosteric regulation by volume fluctuations

<< a typical globular protein [the synaptic protein PSD-95] is able to undergo significant changes in volume under native conditions while exhibiting no additional changes in protein structure.These native state volume fluctuations were found to correlate with changes in internal motions that were previously recognized as a source of allosteric entropy. This finding offers a novel mechanistic basis for allostery in the absence of canonical structural change. >>

Anthony B. Law, Paul J. Sapienza, et al. Native State Volume Fluctuations in Proteins as a Mechanism for Dynamic Allostery. J. Am. Chem. Soc. 2017, 139 (10), pp 3599–3602 doi: 10.1021/jacs.6b12058

Jeff  Hansen. 'Rosetta Stone' protein offers new mechanism  of allostery.  May 24, 2017

martedì 23 maggio 2017

# s-phyto: the three ways of the plastoquinone inside the photosystem II complex

<< The surprise in this process was the seemingly uncoordinated way in which it happens. 'The idea in the field was that there were two channels through which plastoquinone could pass - one would be the entrance, the other the exit', says Marrink [Siewert J.  Marrink]. As it turned out, there were three channels which could all be used to enter or leave the complex. >>

<< Any plastoquinone molecules in the membrane would quickly enter the photosystem II (PSII) complex, but might leave it again without electrons, or hover around inside the complex for a while before finally binding in the exchange cavity, where it could accept electrons. Marrink: 'It is all very much dominated by entropy.' >>

University of Groningen. Molecular dynamics simulations reveal chaos in electron transport. ScienceDaily. 10 May 2017.

Floris J. Van Eerden, Manuel N. Melo, et al. Exchange pathways of plastoquinone and plastoquinol in the photosystem II complex. Nature Communications 8, Article number: 15214 (2017) doi: 10.1038/ncomms15214


<< Nature turned out to be less orderly than we had assumed >> afferma Siewert J.  Marrink. Percio' anche il classico vasetto della nonna contenente la classica piantina talvolta perfino stitichella, sarebbe testimonianza, per un aspetto decisamente peculiare,  fondamentale della sua normale fisiologia (la fotosintesi clorofilliana), di pulsatile motore caotico ...

lunedì 22 maggio 2017

# s-cell: to control living cells with a smartphone

<< The cells [live cells that can release insulin] were then embedded with tiny LED lights inside a hydrogel and transplanted under the skin of diabetic mice. And—get this—the entire system was controlled with a custom Android app, which remotely turns on the implanted LEDs and activates insulin-producing cells based on the level of circulating blood sugar levels. >>

Shelly Fan. These Cells Are Engineered to Be Controlled by a Smartphone. May 11, 2017.

<< With the increasingly dominant role of smartphones in our lives ... >>

Jiawei Shao, Shuai Xue, et al. Smartphone-controlled optogenetically engineered cells enable semiautomatic glucose homeostasis in diabetic mice. Science Translat Med  26 Apr 2017: Vol. 9, Issue 387, eaal2298
DOI: 10.1126/scitranslmed.aal2298

sabato 20 maggio 2017

# s-gst: controlling light-harvesting in molecular ensembles

AA << propose that the trap is a Frenkel exciton state formed much below the main exciton band edge due to an environmentally induced heavy-tailed Lévy disorder. This points to disorder engineering as a new avenue in controlling light-harvesting in molecular ensembles >>

Merdasa A, Jiménez Á, et al. Single
Lévy states-disorder induced energy funnels in molecular aggregates. Nano Lett. 2014 Dec 10;14(12):6774-81. doi: 10.1021/nl5021188. Epub 2014 Nov 7. PubMed PMID:


"Frenkel exciton state" in:

venerdì 19 maggio 2017

# n-soc: prospettiche meta- geometriche meta- fusioni, by Cedric

<< quelli (i requisiti) sono solo la precondizione, il bello viene adesso >> Cedric Villani.

Stefano Montefiori. Francia, il  candidato matematico «Uniremo elite e popolo» Cedric  Villani  alle  politiche  con  «En  Marche»


questo post meriterebbe una rima (quasistocastica senz'altro []) ma sembrerebbe  sparare con tromboncino armato di katyusha contro una postazione di pazienti di Medici Senza Frontiere, percio' mi astengo ...

giovedì 18 maggio 2017

# s-gst: emerging mixed-dimensional weak heterostructures

<< The isolation of a growing number of two-dimensional (2D) materials has inspired worldwide efforts to integrate distinct 2D materials into van der Waals (vdW) heterostructures >>

<< the vdW heterostructure concept can be extended to include the integration of 2D materials with non-2D materials that adhere primarily through non-covalent interactions >>

Deep Jariwala, Tobin J. Marks & Mark C. Hersam.  Mixed-dimensional van der Waals heterostructures. Nature Materials 16, 170–181 (2017) doi:10.1038/nmat4703.


teoria dei sistemi prevede, senz'altro in prima approx, il trasferimento, l'esportazione di concetti e modelli tra differenti contesti, anche lontani tra loro ...

cfr:  Ludwig von Bertalanffy. General System Theory (1969). Teoria generale dei sistemi. Arnoldo Mondadori Editore SpA Milano (1983).

mercoledì 17 maggio 2017

# n-lang: this is not a question of grammatical punctiliousness; time as a container to be filled

<< Shortest versus smallest isn’t actually a question of grammatical punctiliousness. Different languages frame time differently. Swedish and English speakers, for example, tend to think of time in terms of distance—what a long day, we say. Time becomes an expanse one has to traverse. Spanish and Greek speakers, on the other hand, tend to think of time in terms of volume—what a full day, they exclaim. Time becomes a container to be filled >>

Kendra Pierre-Louis. The language you speak changes your perception of time. TIME  IS  RELATIVE. May 9, 2017.

<< These results reveal the malleable nature of human time representation as part of a highly adaptive information processing system >>

Bylund  E , Athanasopoulos  P. The Whorfian Time Warp: Representing Duration Through  the Language Hourglass. J  Exp  Psychol  Gen. 2017  Apr  27.  doi:  10.1037/xge0000314.

martedì 16 maggio 2017

# s-chem: hydrogen bonding, the strength in the middle ...

<< Hydrogen bonds are much weaker than chemical bonds, but stronger than intermolecular van der Waals interactions >>

<< With this study, [AA] have opened up new ways to identify three-dimensional molecules such as nucleic acids or polymers via observation of hydrogen atoms >>

Hydrogen bonds directly detected for the first time. May 12, 2017

Shigeki Kawai, Tomohiko Nishiuchi, et al. Direct quantitative measurement of the C═O⋅⋅⋅H–C bond by atomic force microscopy. Science Advances. 12 May 2017:Vol. 3, no. 5, e1603258 DOI: 10.1126/sciadv.1603258

lunedì 15 maggio 2017

# s-brain: nonlinear (chaotic) approach to model psycho dynamics

<< it will be illustrated how some common factors of psychotherapeutic change and psychological hypotheses on motivation, emotion regulation, and information processing of the client's functioning can be integrated into a comprehensive nonlinear model of human change processes >>

Schiepek GK, Viol K, et al.  Psychotherapy Is Chaotic-(Not Only) in a Computational World. Front Psychol. 2017 Apr 24; 8: 379. doi: 10.3389/fpsyg.2017.00379.eCollection 2017.

domenica 14 maggio 2017

# s-astro: it is possible that FRBs are much more common than has been shown

<< The mysterious nature of FRBs (fast radio burst) has led to a host of theories regarding their nature, from supernova to intelligent alien communications >>

<< In any event, study of FRBs is likely to increase as the mystery deepens and new telescope technology emerges—some have even suggested that it is possible that FRBs are much more common than has been shown, and that once they are observed more regularly, researchers can focus on looking at patterns >>

Bob Yirka. Latest fast radio burst adds to mystery of their source. May 12, 2017

E. Petroff, S. Burke-Spolaor, et al
A polarized fast radio burst at low Galactic latitude. arXiv:1705.02911. May 8, 2017

sabato 13 maggio 2017

# s-behav: modulating doses of bitcrushing

<< Admittedly, large doses of bitcrushing can be hard to swallow. But applied judiciously,  the effect can animate an arrangement with unexpected colors and quirky rhythmic glitches >>

<< Bitcrushing is the hydrochloric acid of audio >>

Joe Gore. The Recording Guitarist: Breaking Bits. May 11, 2017


<< But applied judiciously >> osserva Joe; giusto quello che si dovrebbe tenere a mente se, per ipotesi, in modo piu' o meno in-consapevole, si intendessero manifestare serialita' "bitcrushing" in contesti altri ...

giovedì 11 maggio 2017

# s-acad: they are most likely to stick around longer

<< 65 percent of children just now beginning school will find themselves working jobs as adults that don't exist today >>

<< technology could automate 45 percent of the tasks people are currently paid to do >>

<< Jobs requiring higher-order skills, such as creativity, emotional intelligence and analytical thinking are more difficult to automate and are most likely to stick around longer >>

<< educators need to focus on three core 21st-century skills: complex problem solving, critical thinking and collaboration >>

Raya Bidshahri. These 5 Big Tech Trends Are Changing the Way We Learn. May 02, 2017.

mercoledì 10 maggio 2017

# art-poe: poetiche del quarto tipo

Le tre forme di poesia per Ferlinghetti: << la poesia sdraiata, la poesia seduta, la poesia in piedi (...) il poeta in piedi e' il sovversivo che attacca pacificamente il barbaro status quo >>

America tra le righe. Controcultura. Episodio 6. RAI5. May 10, 2017 h02:30

<< Dopo un memorabile incontro (..) arriva alla Costa del Pacifico, al Golden Gate e a San Francisco per conoscere Lawrence Ferlinghetti >>


geniale, ispirato Ferlinghetti; alla sua tipologia si puo' aggiungere un quarto tipo di poesia: la poetica "quasistocastica", poetica che puo' contenere comodamente le tre da Lui citate piu' qualcos'altro ...

Una intelligenza artificiale forse anche di "media forza" questa cosa qui la "penetrera'"  in una manciata di nanosec, I suppose ...

Lawrence Ferlinghetti

Poetica quasistocastica

martedì 9 maggio 2017

# n-soc: facing a cross-border crimes

<< Estonia wants to clear beaver dams from its border with Russia to prevent smugglers and other illegal activity >>

<< On average, 30 beaver dams are removed from the border every year >>

The entity supporting crimes (photo)

News From Elsewhere. Estonia faces cross-border beaver problem. 8 May 2017.


<< la minima deviazione ti porta fuori strada di mille miglia >>

Yung Chia Hsuan Chueh. Cheng tao ko. In: Sheng -Yen. La poesia dell'illuminazione. Astrolabio. Ubaldini Ed. Roma.  (2001) p.83.

lunedì 8 maggio 2017

s-ecol: inflatable poo emojis (onto Lake Ohakuri) to underline new standards

<< Protesters from the Action Station group launched 50 inflatable poo emojis onto Lake Ohakuri on the Waikato River near to where the ruling National Party was holding a conference, to highlight new standards which it says would mean more contaminants in freshwater, the New Zealand Herald reports >>

'Poo protest' against New Zealand government. 7 May 2017

Russell Blackstock. Flotilla of  inflatable poos launched by water protesters. Sat. 06  May 2017.