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Tuesday, February 22, 2022
3.071 AMICOR (24)
AMICOR 3.071
#Dra. Valderês A. Robinson Achutti (*13/06/1931+15/06/2021)
As a medical student, Dr. Farmer decided to build a clinic in Haiti. It grew into a vast network serving some of the world’s poorest communities.
Dr. Paul Farmer speaking with an H.I.V. patient, Altagrace Cenatus, at a Partners in Health hospital in Haiti in 2003. He worked to provide quality health care to some of the poorest people in the world.Credit...Angel Franco/The New York Times
[17:43, 19/02/2022] Luiz Eduardo Robinson Achutti: Me buscava em casa, carro parecia bom. Não era de falar muito mas ouvia, respondia, respeitava. Onde não lembro. Depois sempre tinha engarrafamento na saída, íamos escutando os intermináveis comentários. Não sei quantos meses foram. Acho que era uma época ruim do Grêmio.
O médico Nelson Carvalho de Nonohay, ex-secretário da Saúde do Rio Grande do Sul e referência na área de cardiologia, morreu nesta sexta-feira (18) devido a complicações decorrentes de uma pneumonia bacteriana. Ele tinha 83 anos. Dra. Valderês foi Auxiliar de Ensino, da turma dele, enquanto funcionava numa enfermaria da Santa Casa, antes da existência do Instituto de Cardiologia, onde foram os primeiros residentes. Formado em Medicina pela Universidade Federal do Rio Grande do Sul (UFRGS), Nonohay especializou-se em cardiologia em 1966, na quinta turma de residentes dessa especialidade na atual Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA). Foi um dos membros-fundadores da Fundação Universitária de Cardiologia (IC-FUC) — Instituto de Cardiologia, criada em 1966 com o objetivo de desenvolver o ensino e pesquisa e aprimorar a assistência médica em cardiologia no Rio Grande do Sul, que veio a se tornar uma das maiores referências no país na especialidade. Nonohay exerceu suas atividades no IC-FUC desde que concluiu a residência. Foi o primeiro chefe e organizador da primeira unidade de tratamento intensivo coronariano do Estado, a segunda do Brasil. Exerceu também a chefia da unidade de assistência médica do IC-FUC. Ocupou o cargo de diretor-secretário da FUC e, nos últimos anos, atuou como presidente do Conselho Diretor. Foi, ainda, médico da Varig e presidente da Sociedade de Cardiologia do Rio Grande do Sul nos anos de 1975 e 1983. Entre 1990 e 1991, foi secretário de Saúde do Rio Grande do Sul no segundo governo estadual de Sinval Guazzelli. \ Torcedor doGrêmio, foi conselheiro do seu time de coração entre 1983 e 2007. Nonohay deixa deixa três filhos, Juliana, Laura e João, e cinco netos.
#The Lancet
Vox wroteThe Hidden Epidemic » The article covered IHME's antimicrobial resistance study on 23 pathogens and 88 pathogen-drug combinations across 204 countries and territories in 2019, recently published in The Lancet.
Computational microbiologist Gregorio Iraola leads a consortium focused
on tailoring public-health interventions for local needs.
Active galactic nuclei
Active galactic nuclei, such as the one shown in this graphic, are the luminous centres of some galaxies and are thought to be powered by supermassive black holes. Researchers reported this week that they had captured a sharp image of a nearby active galactic nucleus, showing a glowing doughnut-shaped object surrounding the hidden black hole.
Light emitted by most active galactic nuclei has key features that allow the nuclei to be classed as type 1 or type 2 objects. A widely accepted unified model suggests that this distinction arises because the line of sight to type 2 objects is obscured by a dusty torus of matter that feeds the black hole. A News & Views article explains more about how the researchers managed the difficult feat of imaging the dust that hides the black hole.
Earth's inner core may be filled with a weird substance that is neither solid nor liquid, according to a new study. For more than half a century, scientists believed that Earth's deepest recesses consist of a molten outer core surrounding a densely compressed ball of solid iron alloy. But new research, published Feb. 9 in the journal Nature, offers a rare insight into the inner structure of the planet — and it's far weirder than previously thought.
For all of the recent strides we've made in the math world— like a supercomputer finally solving the Sum of Three Cubes problem that puzzled mathematicians for 65 years—we're forever crunching calculations in pursuit of deeper numerical knowledge. Some math problems have been challenging us for centuries, and while brain-busters like these hardest math problems that follow may seem impossible, someone is bound to solve 'em eventually. Maybe.
For now, you can take a crack at the hardest math problems known to man, woman, and machine.
A newly discovered bacterium, Thiomargarita magnifica, challenges the definition of a microbe: its filament-like single cell is up to 2 centimetres long. T. magnifica achieves its unprecedented size by having unique cellular features: two membrane sacs. One is filled with its genetic material; the other, which is much larger, helps to keep its cellular contents pressed up against its outer cell wall so that the molecules it needs can diffuse in and out. Researchers have dubbed these sacs ‘pepins’ — inspired by the pips in fruit — and note that they blur the line between single-celled prokaryotes and eukaryotes (the group that includes humans), which pack their DNA into a nucleus.
A group of astrophysicists has proposed that individual planets are capable of developing intelligence — not the kind of smarts like knowing your ABCs, but rather an intelligence associated with the interconnectedness of the life inhabiting them. However, don't assume that our planet is in this intelligent league. Earth is still one major step away from developing true planetary intelligence, a milestone that, if achieved, could help us prevent the impending climate catastrophe, the scientists said.
In the new study, published Feb. 7 in the International Journal of Astrobiology, a group of researchers argues that a planet can be deemed intelligent if it demonstrates cognition — the capacity to know something about what's happening and act on that knowledge. This could happen if nature and technology on planets like Earth can evolve to the point where they are so interconnected that they can recognize potential issues and create feedback loops to counter them.
Cryptographers Achieve Perfect Secrecy With Imperfect Devices
By MORDECHAI RORVIG
For the first time, experiments demonstrate the possibility of sharing secrets with perfect privacy — even when the devices used to share them cannot be trusted.
Extinction in Springtime Isotope analysis of fish fossils from North Dakota suggests that the meteor strike that caused the dinosaur extinction occurred in the springtime, Kenneth Chang reports for The New York Times. This is a new piece in the puzzle of dinosaur extinction, which has only recently started coming together. In 2020 the paleontologist Pincelli Hull found conclusive evidence that the extinction was caused by an asteroid impact rather than volcanism. Joshua Sokol interviewed her for Quanta.
Volcanic Skies on Saturn On Saturn, auroras are fueled by cryovolcanos on its moon Enceladus that spew plasma into the atmosphere. Robin George Andrews writes for WIRED about this new discovery. Last year, he wrote for Quanta about how auroras were finally identified as the solution to a 50-year-old mystery: Why are Saturn and Jupiter hot despite being so far from the sun? Follow Quanta #Live Science
(Reproduced, with permission, from Wohns et al., A unified genealogy of modern and ancient genomes. Science (2022). doi: 10.1126/science.abi8264.)
A new, enormous family tree for all of humanity attempts to summarize how all humans alive today relate both to one another and to our ancient ancestors.
To build this family tree, or genealogy, researchers sifted through thousands of genome sequences collected from both modern and ancient humans, as well as ancient human relatives, according to a new study published Thursday (Feb. 24) in the journal Science. These genomes came from 215 populations scattered across the world. Using a computer algorithm, the team revealed distinct patterns of genetic variation within these sequences, highlighting where they matched and where they differed. Based on these patterns, the researchers drew theoretical lines of descent between the genomes and got an idea as to which gene variants, or alleles, the common ancestors of these people likely carried.
Using one of the world's most precise atomic clocks, physicists have shown that time runs a tiny bit slower if you change your height above the Earth's surface by a minuscule 0.008 inch (0.2 millimeters) — roughly twice the width of a piece of paper. The finding is yet another confirmation of Albert Einstein's theory of relativity, which predicts that massive objects, like our planet, warp the passage of time and cause it to slow down.
"We're talking about measuring a change in how a clock ticks at a level a little larger than a human hair," said Tobias Bothwell, a graduate student in physics at JILA, which is run by the National Institute of Standards and Technology (NIST) and the University of Colorado.
Astronomers studying a dead star on the edge of the Milky Way may have found evidence of a type of thermonuclear explosion that's never been seen before — and which may never be seen again.
Dubbed a "hyperburst," this gargantuan explosion appears to have occurred deep within a neutron star (the ultra-dense, compact core of a dead star) after hundreds or perhaps thousands of years of heat and pressure building up. When the explosion finally ignited in 2011, it released as much energy in about three minutes as the sun releases in 800 years, study co-author Jeroen Homan, a research scientist at Eureka Scientific in Oakland, California, told Live Science.
A sweeping search for extraterrestrial technology in the middle of the Milky Way has turned up dry. The search, the fourth in a series looking for low-frequency radio waves that might be produced by alien civilizations, found no evidence of ET. But improvements in telescope technology mean that the strategy could be a way to find other technologically advanced societies in the future, the study authors wrote in a paper published to the preprint database arXiv on Feb. 7.
....Le siège en règle sera-t-il pour aujourd’hui? En attendant, les rumeurs, notamment sur ces fameux tanks russes qui auraient toujours été aperçus dans la rue d’après, minent le moral des habitants bien davantage que les explosions sporadiques. Sans entamer la volonté de résister. «La Russie est née en Ukraine, elle pourrait bien y succomber», m’a dit un badaud à la station de métro Minska.
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