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Visualizzazione post con etichetta life. Mostra tutti i post
Visualizzazione post con etichetta life. Mostra tutti i post

giovedì 29 luglio 2021

# life: apropos of fuzzy cooperation, Ralph fuzzy mixture vs. world fuzzy dance ...

<< In 2013, the American virologist Ralph Baric approached Zhengli Shi at a meeting. Baric was a top expert in coronaviruses, with hundreds of papers to his credit, and Shi, along with her team at the Wuhan Institute of Virology, had been discovering them by the fistful in bat caves. In one sample of bat guano, Shi had detected the genome of a new virus, called SHC014, that was one of the two closest relatives to the original SARS virus, but her team had not been able to culture it in the lab. >>️

<< Baric had developed a way around that problem—a technique for “reverse genetics” in coronaviruses. Not only did it allow him to bring an actual virus to life from its genetic code, but he could mix and match parts of multiple viruses. He wanted to take the “spike” gene from SHC014 and move it into a genetic copy of the SARS virus he already had in his lab. The spike molecule is what lets a coronavirus open a cell and get inside it. The resulting chimera would demonstrate whether the spike of SHC014 would attach to human cells. >>️

<< Just as when you trade in part of a poker hand for fresh cards, there was no way of knowing whether the final chimeras would be stronger or weaker. >>

<< If you study a hundred different bat viruses, your luck may run out. >> Ralph Baric. 

<< In 2014, the NIH awarded a five-year, $3.75 million grant to EcoHealth Alliance to study the risk that more bat-borne coronaviruses would emerge in China, using the same kind of techniques Baric had pioneered. Some of that work was to be subcontracted to the Wuhan Institute of Virology. >>

<< Consider this hypothetical scenario, (..) An important gain-of-function experiment involving a virus with serious pandemic potential is performed in a well-regulated, world-class laboratory by experienced investigators, but the information from the experiment is then used by another scientist who does not have the same training and facilities and is not subject to the same regulations. In an unlikely but conceivable turn of events, what if that scientist becomes infected with the virus, which leads to an outbreak and ultimately triggers a pandemic >>  Anthony Fauci (director of the NIH’s National Institute of Allergy and Infectious Diseases) (2012).
<< Paul’s grilling of Fauci brought new scrutiny to the relationship between Ralph Baric’s lab at UNC and Zhengli Shi’s at WIV, with some narratives painting Baric as the Sith master of SARS and Shi as his ascendant apprentice. They did share resources—for example, Baric sent the transgenic mice with human lung receptors to Wuhan.  >>
<< During a hearing on May 11, 2021, Senator Rand Paul confronted Anthony Fauci over funding of bat-virus research by the National Institutes of Health. >>️

<< The NIH has still not fully explained its decision-making and did not reply to questions. Citing a pending investigation, it has declined to release copies of the grant that sent the Wuhan institute about $600,000 between 2014 and 2019. It has also revealed little about its new system for assessing gain-of-function risks, which is carried out by an anonymous review panel whose deliberations are not made public. >>️
Rowan Jacobsen. Inside the risky bat-virus engineering that links America to Wuhan. China emulated US techniques to construct novel coronaviruses in unsafe conditions. MIT TechRev. Jun 29, 2021. 


Also

<< " ... e Da-Li' si sparse pell' aere un fantasmatico ente supersintetico supercompresso ... >> in: ️2153 - cracker tendenziali (around a matter-sucking maelstrom). Notes. Apr 4, 2008. (quasi-stochastic poetry)


<< in attesa del beffardo tsunami. >> in: 1619 - onda di carambola. Notes. Nov 29, 2004. (quasi-stochastic poetry).

keyword 'virus' in Notes (quasi-stochastic poetry)


keyword 'virus' in FonT 


keyword 'caos' | 'caotico' in Notes (quasi-stochastic poetry)



FonT

no surprise, no amazement here, I know chickens behaviors. 

<< Ricordo che quando si era ragazzi, negli anni sessanta, ... >> in: 2157 - il pino di takata matsubara. Apr 1, 2011. Notes. 








martedì 27 luglio 2021

# life: they ( NIH, Ralph Baric’s Univ.of North Carolina lab, Wuhan Instit.of Virology ) never created a supervirus, anzicheforse ...

<< 
In May, the coronavirus researcher Ralph Baric found himself at the center of the debate over gain-of-function research ( https://www.technologyreview.com/2021/06/29/1027290/gain-of-function-risky-bat-virus-engineering-links-america-to-wuhan ), in which scientists engineer new properties into existing viruses. And during a congressional hearing, Senator Rand Paul implied that the National Institutes of Health had been funding such research at both the Wuhan Institute of Virology and Baric’s University of North Carolina lab, and that the two labs had been collaborating to make “superviruses”. Baric released a statement clarifying the research in question did not qualify as gain-of-function, and none of the SARS-like coronaviruses he’d used in the experiments were closely related to SARS-CoV-2, yet that did little to quell questions about the role his research may have played in furthering scientists’ ability to modify coronaviruses in potentially dangerous ways. Baric believes such research is essential to the development of vaccines and other countermeasures against emerging viruses, a project he has been engaged in for more than 20 years. His research laid the groundwork for the first approved anti-covid drug and helped speed the development of the mRNA vaccines that have proved so pivotal. 
MIT Technology Review recently asked Baric to explain what constitutes a gain-of-function experiment, why such research exists, and whether it could have played any role in the pandemic. Read the full interview. ( https://www.technologyreview.com/2021/07/26/1030043/gain-of-function-research-coronavirus-ralph-baric-vaccines )
>>️

Rowan Jacobsen. Why researchers need to tinker with viruses. The Download from MIT Technology Review newsletters@technologyreview.com  
The Download from MIT (mail). Jun 26, 2021 14:12

Also

<< ... e Da-Li' si sparse pell' aere un fantasmatico ente supersintetico supercompresso ... >> in: ️2153 - cracker tendenziali (around a matter-sucking maelstrom). Notes. Apr 04, 2008. (quasi-stochastic poetry)


keyword 'virus' in Notes (quasi-stochastic poetry)


keyword 'virus' in FonT 




giovedì 22 luglio 2021

# life: transitions in the edges; to stimulate a shift in thinking, target small groups of people in the "outer edge" or fringe of a network.

<< social influencers are unlikely to change a person's behavior by example. To stimulate a shift in people's thinking, target small groups of people in the outer edge or fringe of a network. (..) as prominent and revered as social influencers seem to be, in fact, they are unlikely to change a person's behavior by example -- and might actually be detrimental to the cause. >>

<< When social influencers present ideas that are dissonant with their followers' worldviews (..) they can unintentionally antagonize the people they are seeking to persuade because people typically only follow influencers whose ideas confirm their beliefs about the world,"  >> Damon Centola. ️

<< To stimulate a shift in thinking, target small groups of people in the "outer edge" or fringe of a network. >>
Study finds surprising source of social influence. University of Pennsylvania.  Jul 20, 2021. 


Douglas Guilbeault, Damon Centola.  Topological measures for identifying and predicting the spread of complex contagions. Nat Commun 12, 4430. doi: 10.1038/ s41467-021-24704-6. Jul 20  2021.


Also

1829 - catalisi d' interferenza periferica (c.i.p.)  Notes. Nov 24, 2004. (quasi-stochastic poetry).


keyword 'transition' | 'transitional' in FonT



keyword 'transition' | 'transizion*' in Notes (quasi-stochastic poetry)




martedì 20 luglio 2021

# life: some scientists hypothesize the possibility of (A) traveling faster than light, (B) visiting the interior of a black hole, (C) being already under observation by alien entities.

(A) traveling faster than light

<< Lentz (Erik Lentz. https://iopscience.iop.org/article/10.1088/1361-6382/abe692 ) proposes one such way we might be able to do this, thanks to what he calls a new class of hyper-fast solitons – a kind of wave that maintains its shape and energy while moving at a constant velocity (and in this case, a velocity faster than light). According to Lentz's theoretical calculations, these hyper-fast soliton solutions can exist within general relativity, and are sourced purely from positive energy densities, meaning there's no need to consider exotic negative- energy- density sources that haven't yet been verified. (..) With sufficient energy, configurations of these solitons could function as 'warp bubbles', capable of superluminal motion, and theoretically enabling an object to pass through space-time while shielded from extreme tidal forces. >>

<< another recent analysis, published only this month ( David Nield.  https://www.sciencealert.com/engineers-have-proposed-the-first-model-for-a-physical-warp-drive  ;  Alexey Bobrick, Gianni Martire. https://iopscience.iop.org/article/10.1088/1361-6382/abdf6e ), which also proposes an alternative model for a physically possible warp drive that doesn't require negative energy to function. >>️️

Peter Dockrill. Faster-Than-Light Travel Is Possible Within Einstein's Physics, Astrophysicist Shows. Mar 11, 2021.


(B) visiting the interior of a black hole

<<  if a person found an isolated supermassive black hole suitable for scientific study and decided to venture in, everything observed or measured of the black hole interior would be confined within the black hole's event horizon.
Keeping in mind that nothing can escape the gravitational pull beyond the event horizon, the in-falling person would not be able to send any information about their findings back out beyond this horizon. Their journey and findings would be lost to the rest of the entire universe for all time. But they would enjoy the adventure, for as long as they survived … maybe …. >>️

Leo Rodriguez, Shanshan Rodriguez. Could a human enter a black hole to study it? A person could travel past (certain) black holes' event horizons without dying immediately — here's how. Feb 7, 2021. 


(C) being already under observation by alien entities.

<< On June 25 the Pentagon and the Office of the Director of National Intelligence released their much hyped report on unidentified aerial phenomena, or UAP. (..) And while the report did not rule out an extraterrestrial origin for much of the documented UAP, it was short on details or bombshells. >> 

<<  we already know our world is easily detectable by extrasolar observers. A paper published on June 23 in Nature  
(Kaltenegger L., Faherty J.K.  https://www.nature.com/articles/s41586-021-03596-y ) shows that in the past 5,000 years, 1,715 stars have been in the right celestial position to view a populated Earth transiting the sun—with 319 more entering this sweet spot in the next 5,000 years. And seven of these far-off stars are known to have their own orbiting exoplanets that might support life. >>

<< Think of living in a room, and all the windows are open, and you do all your business, and you don’t know that all the windows are open, (..) Would you behave differently if you knew that you are being seen all your life? >>️  René Heller️
Tess Joosse. Aliens Might Already Be Watching Us. A new star map reveals more than 2,000 stars, some with their own planets, that have a direct view of our planetary presence. July 1, 2021




venerdì 2 luglio 2021

# life: Modern Jazz Quartet (MJQ) revisited (precarious attempt to revisit)

Even the impulsive epiphany of Mr. Grillo @beppe_grillo and Mr. Conte @GiuseppeConteIT reminded me of the intriguing story of MJQ ...

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


The point is that MJQ were talented professionals in (conversational, cooperative, hacking-craking) chaotic phrasing ...

instead this just feels like unstructured chaos

Jason Horowitz. How Giuseppe Conte of Italy Went From Irrelevant to Irreplaceable. NYT. Aug. 29, 2019.


Conte-Grillo, what are the points of conflict that split the M5S. June 27, 2021. 


PostNote

Apropos of the "ulteriore elemento di impredicibilità" (further element of unpredictability)   https://inkpi.blogspot.com/2007/03/2124-attrattore-cooperativo-bipolare.html   the inkling about the image of an acyclic bipolar avatar generated and controlled by an artificial intelligence - characterized by sufficient degrees of freedom and self-maintenance - could, hypothetically, create and modulate (unexpected) novelties, not necessarily at least in a first approximation, with  harmful-self-damaging outcomes. 


sabato 5 giugno 2021

#life: reliability, deception and lies of a signal (among the Siberian jay Perisoreus infaustus)

<< Deception and lies are surprising aspects of human communication and the use of language in which false information is intentionally communicated to others, allowing an individual to gain an advantage over the recipient of such false information. However, language is actually highly pro-social and cooperative and is mainly used to share reliable information. >>️

<< a number of species are able to deceive their conspecifics, including some species of primates and birds like the Siberian jay (Perisoreus infaustus). Siberian jays live in territorial groups and have an elaborate communication system: A wide range of calls allow them to warn each other of the presence of different predators as well as the behaviour of their fiercest enemy, the hawk. >>

<< Occasionally, however, neighbours intruding into a group's territory use the same calls that would otherwise indicate the presence of a perched hawk for a different purpose. Their aim is to deceive the members of the group about the presence of the predator, thus scaring them away to get access to their food.  >>

<< It is a commonly observed phenomenon in the animal kingdom that warning calls are used to deceive others. Clearly, the recipients of the false information potentially pay a high price if they ignore the warning, >>  Filipe Cunha. 

<< Siberian jays thus have a simple rule to avoid being tricked: They only trust the warning calls from members of their own group, meaning cooperation partners. Familiarity alone is not enough, otherwise the birds would also have trusted the calls of their neighbours, >> Michael Griesser. ️

Daniel Schmidtke. Trust among corvids. University of Konstanz. Jun 1, 2021. 


Filipe C. R. Cunha, Michael Griesser. Who do you trust? Wild birds use social knowledge to avoid being deceived. Science Advances. Vol. 7, no. 22, eaba2862. doi: 10.1126/ sciadv.aba2862. May 28, 2021. 


Also

2068 - chaotic probabilities. 
(quasi-stochastic poetry)


keyword "fake" in FonT



sabato 1 maggio 2021

# life: I'm sorry, but this image has no predictive value

this image has no predictive value;  the Bot (relatively omniscient) will indicate the direction;  the Human (mumble grumble) will not be able to do other than walk it ... you bet, it's just a matter of time, relatively short time ... Are You Ready?

the image from  https://twitter.com/LDO_CTIO   (screenshot taken on Feb 25th, 2021 09:55 CET)

keyword 'ai' | 'bot' in FonT



keyword 'ia' | 'ai' | 'robota' in Notes (quasi- stochastic poetry)




martedì 27 aprile 2021

# life: Occam's razor revisited, miss opportunities to improve through subtraction

<< A new study explains why people rarely look at a situation, object or idea that needs improving -- in all kinds of contexts -- and think to remove something as a solution. Instead, we almost always add some element, whether it helps or not. >>️

<< It happens in engineering design, which is my main interest, (..) But it also happens in writing, cooking and everything else -- just think about your own work and you will see it. The first thing that comes to our minds is, what can we add to make it better. Our paper shows we do this to our detriment, even when the only right answer is to subtract. Even with financial incentive, we still don't think to take away. >> Leidy Klotz.️

Why our brains miss opportunities to improve through subtraction. University of Virginia School of Engineering and Applied Science. Apr 7, 2021. 


Adams GS, Converse BA, et al. People systematically overlook subtractive changes. Nature 592, 258–261. doi: 10.1038/ s41586-021-03380-y. Apr 7,  2021.


Also

keyword 'occam' in FonT


keyword 'occam' in Notes (quasi-stochastic poetry)






sabato 17 aprile 2021

# life: apropos of '1or2achoos' (from Wuhan), 'Shame on us', by Jay.

<< The year 2003 was an ominous one for emerging infectious diseases. A pair of deadly influenza strains had leapt from birds to humans in Hong Kong and the Netherlands. And a new coronavirus was spreading around the world causing a mysterious illness that became known as severe acute respiratory syndrome, or SARS. Many experts feared they were watching the start of a global pandemic. Fortunately, the worst-case scenario never materialized. But it was a close-enough call for Robert Webster, a leading authority on avian influenza, to start urging scientists and policymakers to prepare for the next outbreak. One of his top recommendations: develop and stockpile drugs that target a wide range of viral pathogens. Drug researchers did not heed his call. After the SARS threat subsided, interest evaporated — and the world paid the price. “The scientific community really should have developed universal antivirals against SARS,” says Webster, now an emeritus member of St Jude Children’s Research Hospital in Memphis, Tennessee. “Then we would have had something in the stockpile for the emergence of COVID,” which is a caused by SARS-CoV-2, a close relative of the virus responsible for SARS. Another warning shot came in 2012, when Middle East respiratory syndrome (MERS) — caused by another relative of SARS-CoV-2 — started spreading through a handful of countries. Still, the drug shelves remained largely bare — a fact that Jay Bradner, president of the Novartis Institutes for BioMedical Research in Cambridge, Massachusetts, regards as “regrettable”. >>️

<< Shame on us, (..) We can be better prepared. >> Jay Bradner.️

<< We need an arsenal, >> Kara Carter.

<< It’s hard to convince a company to make a drug against something that doesn’t exist. >>️  Timothy Sheahan.

<< There’s a lot of work that needs to be done, (..) We don’t want to have another year like 2020, (..) and we don’t have to, if we do the work in advance. >> Nat Moorman.️
Elie Dolgin. The race for antiviral drugs to beat COVID — and the next pandemic. Despite dire warnings, a stockpile of ready compounds to fight viral pandemics was sorely lacking. Can drugmakers finally do the right thing? Nature 592, 340-343. doi: 10.1038/ d41586-021-00958-4. Apr 14, 2021. 


Also

keyword 'virus' | 'sars-cov-2' in FonT



keyword 'virus' in Notes (quasi-stochastic poetry):


apropos of "herd immunity" ... , FonT,  Mar 16, 2020.





venerdì 16 aprile 2021

# life: non-human jazz from vibrant cobweb strings performed by a harp-like instrument

<< The spider lives in an environment of vibrating strings, (..) They don't see very well, so they sense their world through vibrations, which have different frequencies. (..) Such vibrations occur, for example, when the spider stretches a silk strand during construction, or when the wind or a trapped fly moves the web. (..) Webs could be a new source for musical inspiration that is very different from the usual human experience, >>️ Markus Buehler️

AA << scanned a natural spider web with a laser to capture 2D cross-sections and then used computer algorithms to reconstruct the web's 3D network. The team assigned different frequencies of sound to strands of the web, creating "notes" that they combined in patterns based on the web's 3D structure to generate melodies. The researchers then created a harp-like instrument and played the spider web music in several live performances around the world. >>️

Making music from spider webs. ACS - Am Chem Soc. Apr 12, 2021


Isabelle Su, Zhao Qin, et al. Imaging and analysis of a three-dimensional spider web architecture. J R Soc Interface. 15(146): 20180193. doi: 10.1098/ rsif.2018.0193. Sep 19, 2018. 








giovedì 1 aprile 2021

# behav: a case of extreme human-proto-bot love

TUKO.co.ke << has learnt Yuri Tolochko married his beautiful doll fiancee Margo in a traditional ceremony to mark their 18-month relationship. According to The Sun, the 'wedding' was official as it had a celebrant and a dozen of excited guests who could not keep calm after watching Yuri's romantic first dance with his doll. TUKO.co.ke accessed a video from the event which was posted on Instagram and it showed how stunning Yuri looked in his smart black dinner suit and bow tie, with his 'bride' rocking a lacy white wedding gown. >> 

Tuko. Yuri Tolochko: Bodybuilder marries doll after months of romance.


Magda Ibrahim. LOVE ISN'T DEAD. Bizarre moment bodybuilder MARRIES sex doll in creepy ceremony saying she’s a ‘tender soul inside’. Nov 25, 2020.


Hannah Frishberg. Bodybuilder proposes to sex doll after getting it plastic surgery. Dec10, 2019. 


Also

All things have a bit of soul. FonT. Apr 26, 2018.


Gabe Ibáñez. Autómata. Movie. (2014).





giovedì 11 marzo 2021

# life: even a slime mold takes smart decisions about the future (Physarum polycephalum)

<< The slime mold Physarum polycephalum has been puzzling researchers for many decades. Existing at the crossroads between the kingdoms of animals, plants and fungi, this unique organism provides insight into the early evolutionary history of eukaryotes. Its body is a giant single cell made up of interconnected tubes that form intricate networks. This single amoeba-like cell may stretch several centimeters or even meters, featuring as the largest cell on earth in the Guinness Book of World Records. >>

<< The striking abilities of the slime mold to solve complex problems such as finding the shortest path through a maze earned it the attribute "intelligent," intrigued the research community and kindled questions about decision making on the most basic levels of life. >> 

<<  The decision-making ability of Physarum is especially fascinating given that its tubular network constantly undergoes fast reorganization—growing and disintegrating its tubes—while completely lacking an organizing center. The researchers discovered that the organism weaves memories of food encounters directly into the architecture of the network-like body and uses the stored information when making future decisions. >>

Researchers find a single-celled slime mold with no nervous system that remembers food locations. Max Planck Society. Feb 23, 2021.  


Mirna Kramar, Karen Alim. Encoding memory in tube diameter hierarchy of living flow network. PNAS. 118 (10).  e2007815118. doi: 10.1073/ pnas.2007815118








giovedì 25 febbraio 2021

# life: apropos of tricks, 'torpor', a survival strategy not as rare as previously thought

<< Life is hard for small animals in the wild, but they have many solutions to the challenges of their environment. One of the most fascinating of these strategies is torpor. Not, to be confused with sleep or Sunday afternoon lethargy, torpor is a complex response to the costs of living. >>

<<  Once thought to occur only in birds and mammals in the Northern Hemisphere where winters are more pronounced, (AA) now know torpor is widespread in small Australian mammals, and has also been observed in many small Australian bird species. >>

<<  The question people often ask about torpor, is "can humans do it?" Interestingly, some small primates have been observed using torpor. While it is technically possible to induce torpor in humans chemically, torpor is a very complex physiological process, and there are many aspects of it scientists still don't fully understand. >>

Chris Wacker. Torpor: a neat survival trick once thought rare in Australian animals is actually widespread. The Conversation. Dec 29, 2020. 



Also

Hrvatin S., Sun S., Wilcox OF et al. Neurons that regulate mouse torpor. Nature 583, 115–121. doi: 10.1038/ s41586-020-2387-5. Jun 11, 2020.


Takahashi TM, Sunagawa GA, et al. A discrete neuronal circuit induces a hibernation-like state in rodents. Nature 583, 109–114. doi: 10.1038/ s41586-020-2163-6. Jun 11, 2020.






venerdì 19 febbraio 2021

# life: to eat each other's wings within mating pairs (among wood-feeding cockroaches Salganea taiwanensis)

 << The behavior of eating their mates or a part of their mate's body has been studied in sexual cannibalism or nuptial feeding. In these behaviors, only one sex eats the other unilaterally. Within mating pairs of a wood‐feeding cockroach (Salganea taiwanensis), males and females eat the mate's wings each other, which is the first “mutual” case in these behaviors. Because the evolution of sexual cannibalism and nuptial feeding has been explained based on unilaterality, this mutual eating should have a new significance of reproduction. >> 

Haruka Osaki, Eiiti Kasuya. Mutual wing-eating between female and male within mating pairs in wood‐feeding cockroach. doi: 10.1111/eth.13133. Jan 25, 2021.


Bob Yirka. Wood-eating cockroach couples take turns eating each other's wings after mating. Feb 15, 2021.


Also

the beetle Carabaeus lamarcki, dancer and sky analyzer. May 14, 2016.


2022 - si risvegliano stercorari. Notes. June 17, 2006. (quasi-stochastic poetry)


keyword 'cockroach' in FonT







sabato 26 dicembre 2020

# life: ten forecasts for 2021, by Saxo Bank.











Pierandrea Ferrari. I 10 cigni neri del 2021. Quali sono gli eventi inaspettati che potrebbero impattare sull’economia globale nel corso del 2021? Ecco la lista stilata da Saxo Bank.  Dec 26, 2020.




giovedì 16 luglio 2020

# life: perform very large flights without flapping (among Andean condors)

<< Andean condors, at 10kg or more, are among the world’s heaviest flying birds. Once birds get this big, the energetic costs of flapping are so high they instead rely on currents of rising air to travel long distances. >>

AA << results showed that on average, condors fly for three hours a day, but they flap for less than two minutes of this - just 1% of their flight time. One bird even flew for more than five hours without a single flap, covering 172km. Surprisingly, the amount they flapped hardly changed whether they were in the Andes or the steppe, or whether it was windy or not. >>

<< Nonetheless, even in weak thermal conditions, which may occur in winter, (their) results suggest condors may flap for only around two seconds per km. This remarkably low investment in flapping flight is on a par with albatrosses. In fact, albatrosses appear to flap more than condors – between (1% and 15% of their flight time outside take-off) >>

<< What is particularly striking about our findings is that all the birds we studied were immature. There was some suggestion that flight performance improved with age, but the demonstration that all birds flap so rarely shows that it is possible for even young condors to invest little energy in flying. >>

Emily Shepard. We tagged Andean condors to find out how huge birds fly without flapping. Jul 13, 2020. 


H. J. Williams, E. L. C. Shepard, et al
 Physical limits of flight performance in the heaviest soaring bird.  PNAS. doi: 10.1073/ pnas.1907360117. Jul 13, 2020



giovedì 9 luglio 2020

# life: the transient floating entities suspended in the skies of Venus

<< From afar, Venus seems like the most uninhabitable planet of all. >>

<< NASA’s Magellan mission conducted radar mapping of the entire surface of Venus, penetrating its cloud layer and enabling (..) to reconstruct the first 3D map of the Venusian surface. >>

<< Beneath its carbon dioxide/nitrogen atmosphere, 90 times thicker than Earth’s, a hellscape of a surface awaits. >>

<< Although (..) successfully sent numerous landers, they’ve all failed after mere hours. The reason? A layer of sulfuric acid clouds enshrouds Venus at high altitudes. These radiation-reflecting clouds create a runaway greenhouse effect: responsible for Venus’s incredible temperatures. >>

<< At 60 kilometers (36 miles) in altitude, temperatures and atmospheric pressures are similar to Earth’s. The right ingredients for life, including carbon, oxygen, and nitrogen-rich molecules, are all abundant. Ultraviolet photos of Venus display "dark patches," which Harold Morowitz and Carl Sagan suggested could indicate microorganisms. >>

<< Above the cloud-tops, Venus has been called a "paradise planet." >>

Ethan Siegel. Yes, There Really Could Be Life In The Cloud Tops Of Venus. Jul 6, 2020. 






mercoledì 1 luglio 2020

# life: apropos of transitional blennies

<< Research on blennies, a family of fish that have repeatedly left the sea for land, suggests that being a 'jack of all trades' allows species to make the dramatic transition onto land but adapting into a 'master of one' allows them to stay there. >>

<< a flexible diet and behavior were likely to be instrumental in the transition to land. However, once out of the water, restrictions on the type of food available triggered major evolutionary changes, particularly to their teeth, as land dwelling blennies have become specialists in scraping algae and detritus from rocks. >>

<< having a broad diet or being behaviorally flexible can help you move into a new habitat. But once there, this flexibility becomes eroded by natural selection. This presumably means those highly specialized species are less likely to be able to make further transitions, or cope with abrupt environment changes in their existing habitat. >> Terry Ord.

How fish got onto land, and stayed there. British Ecological Society. Jun 17, 2020.  


Terry J. Ord, Peter J. Hundt. Crossing extreme habitat boundaries: Jack‐of‐all‐trades facilitates invasion but is eroded by adaptation to a master‐of‐one. Funct Ecol. doi: 10.1111/ 1365-2435.13600. Jun 16, 2020.


Also

The multifactorial relationship system evolved in Blenny. FonT. Jun 2, 2017.



giovedì 25 giugno 2020

# life: a paradigm shift; extinction vs. evanescence, relict species, ...

<< The first "complete" paradigm of extinction was proposed as "the multigenerational, attritional loss of reproductive fitness," for which MALF is a suitable acronym. A "complete" paradigm must encompass cause, effect, and a mechanism. The primary goal of this study is to verify the new paradigm. (AA) cite four independent tests of the paradigm employing observational, experimental, and wholly theoretical techniques, >>

<< "extinction" presents certain problems with adjectival and gerund forms. (AA) do not refer to a process of "extinctioning" or "extincting" and there is no disciplinary field named "extinctionary" biology, ecology, or genetics. There are several possible verbs for extinction that treat the population or species as agent. These include "devolve," "senesce," "die off," "terminate," and "disappear," among others. However, all of these are in common use with connotations that would distract from (they) proposed meaning. "Devolve" is common in antievolutionist literature. "Senesce" is usually applied only to individuals. "Die off" does not have a single-word noun form. "Terminate" used intransitively comes close to our proposed meaning, but the popularity of the Arnold Schwarzenegger film Terminator will suggest the transitive form to most people. "Disappear" suggests something that is merely out of sight, not necessarily extinct. Instead of these common words, (they) propose using a verb with no distracting connotations. (AA) take our cue from Jefferson’s concern over extinction. Jefferson (1799:256) uses the term "evanish," or in its modern form, "vanish." The adjectival form "vanished" is usable but the noun form sounds a bit awkward: "vanishment." However, Jefferson’s "evanish" calls attention to the Latin root, e + vanescere = to pass away. "Evanesce" has an elegant noun form, "evanescence," and several adjectival forms covering a range of states: "evanesced" denoting the completed action, "evanescing" denoting an action in process, and "evanescent" denoting action in process or in potential. In physics, the adjective "evanescent" is used to designate an electromagnetic field that does not propagate waves beyond the vicinity of the source of the field. Physics and biology are sufficiently distinct that (AA) proposed usage would not create confusion. "Evanescence" does not imply an external agent performing the action and fits the understanding of extinction as a process without adding confusing connotations. This process may be a precursor or complement to evolution, but not necessarily so. >>

Delbert Wiens, Timothy Sweet, Thomas Worsley. Validating the New Paradigm for Extinction: Overcoming 200 Years of Historical Neglect, Philosophical Misconception, and Inadequate Language. The Quarterly Review of Biology. Vol. 95, Issue 2, Pages 109-124. doi: 10.1086/709086. Jun 2020.


Goodbye 'extinction,' hello 'evanescence'? Validating a new paradigm. University of Chicago. Jun 18, 2020. 



giovedì 11 giugno 2020

# life: apropos of widespread racism, three in four people (probably even more than three) hold unconscious negative view of world: study

<< Most Australians tested for unconscious bias hold a negative view of Indigenous Australians which can lead to widespread racism, new analysis from The Australian National University (ANU) shows. >>

<< The ANU researchers say 75 per cent of Australians tested using the Implicit Association Test by a joint initiative of universities including Harvard, Yale and the University of Sydney hold a negative implicit or unconscious bias against Indigenous Australians. >>

Three in four people hold negative view of Indigenous people: study. Australian National University. June 9, 2020.


Siddharth Shirodkar. Bias against Indigenous Australians: Implicit association test results for Australia. Journal of Australian Indigenous Issues. Vol 22 Issue 3-4.  Dec 2019.


Also

# brain: immagini #CTZ, cicliche fantasmatiche pervasive visioni ricorrenti. FonT. Jun 29, 2019.