3.056 AMICOR (24)

AMICOR 3.056 

#Dra. Valderês A. R. Achutti (*13/06/1931+15/06/2021)

Fiz a Vacina 3a dose.

Do HMV fui a pé até o centro e, passando pela esquina da Barros Cassal com Farrapos, lembrei-me, lá dos meados de 50, quando todos os dias úteis, em torno do meio dia, eu me postava no local de onde tirei a foto. Esperava a chegada do ônibus da linha Vila Floresta, verde escuro, não eram muito frequentes, mas traziam minha professorinha que lecionava no Grupo Escolar Sarmento Leite que fazia pouco tempo havia sido inaugurado. Se ela se atrasasse e não descesse na parada, vinha no próximo. Ela morava num apartamento sub-alugado da Dina Buriak (que depois se suicidou). Um pouco mais perto, no edifício Bagé, morava o tio dela João Oscar Robinson.

Mudou muita coisa. Não existe mais o Hotel Umbu, onde paramos uma noite, no dia 31 de julho de 1957-  na volta da Lua de Mel, para retornar às nossas vidas, então como uma família em formação - não vi nenhum ônibus verde da Vila Floresta. Não sei se ainda existem. Os prédios estão todos feios e deteriorados. Estamos em 11 de novembro de 2021…

Convenci-me que não adianta mais esperar o próximo ônibus. Ela não está mais lecionando, nem virá nunca mais. Se posso lembrar o que de bom vivemos juntos...

#De: Antônio Achutti Olivé

Nosso neto, filho da Lúcia Helena, no dia 06/11 na Orquestra Sinfônica (OSPA)

#Do: Centro Histórico e Cultural da Santa Casa

Lançamento de Livro do Dr. Germano Bonow

 

From: Marginalian

Drawing a Tree: Uncommon Vintage Italian Meditation on the Existential Poetics of Diversity and Resilience Through the Art and Science of Trees

A subtle sylvan celebration of how our hurts and our healings shape the singular beauty of our character.

BY MARIA POPOVA

Few things salve sanity better than the awareness that there are infinitely many kinds of beautiful lives, and few places foster this awareness more readily than the forest — this cathedral of infinite possibility, pillared by trees of wildly different shapes and sizes that all began life as nearly identical seeds.

Among the many existential consolations of trees — these teachers in loss as a portal to revelation, these high priestesses of optimism, these virtuosi of improvisation, these emissaries of eternity — is how they self-sculpt their beauty and character from the monolith of challenge that is life. Once planted in its chance-granted location, each tree morphs the basic givens of its genome into a singular shape in response to the gauntlets of its environment: It boughs down low to elude the unforgiving wind, rises and bends to reach the sunlit corner of the umbral canopy, grows a wondrous sidewise trunk to go on living after lightning./.../

#Do Jornal da USP, enviado Prof. Eduardo de Azeredo Costa

Coronavírus infecta células do sistema nervoso
e depende de aminoácido para se replicar

Trabalho mostrou, pela primeira vez, que o sars-cov-2 infecta
e se replica em células cerebrais; fragmentos de RNA viral
também foram encontrados em partes do cérebro de hamsters

Por Fabiana Mariz

Publicado: 04/11/2021

#From: Nature

This freshwater sponge (Spongilla lacustris) may hold clues about the evolution of the nervous system. (Willem Kolvoort/Nature Picture Library)

Sponges hint at origins of nervous system Sponges are expert filter feeders, straining tens of thousands of litres of water through their bodies every day to collect their food. And they do this without a brain, or a single neuron, to their name. Now, researchers have sequenced the RNA in various individual cells from a freshwater sponge (Spongilla lacustris) and found that sponges use an intricate cell communication system to regulate their feeding and to potentially weed out invading bacteria. The findings could help to understand how animals’ nervous systems evolved, but some scientists say that calling these cells a precursor to a nervous system is a stretch. Nature | 4 min read Reference: Science paper #De: Outra Saúde - Cesar VictoraRecomendado pela AMICOR MIR Azambuja Cesar Victora, o epidemiologista que recusou comenda para protestar contra sabotagem do governo à Saúde Coletiva, fala sobre a importância do SUS, o inconformismo da Ciência e sua obra, cujo reconhecimento internacional cresce a cada dia Ao recusar a Grã Cruz da Ordem do Mérito Científico, na última sexta-feira (5/11) o Cesar Victora agitou o combalido mundo da ciência brasileira. A renúncia à medalha, “concedida” pelo governo Bolsonaro, estimulou outros pesquisadores a agirem de modo semelhante. Também deve repercutir na comunidade internacional, devido ao grande prestígio que Victora angariou por seu trabalho pioneiro, marcante no campo a que se dedica. Ainda em maio, ele foi agraciado pelo Prêmio Richard Doll, o mais importante e prestigiado da epidemiologia./.../ #From:New England J of Medicine History of Medicine: When Women and Children Made the Policy Agenda — The Sheppard–Towner Act, 100 Years Later J.P. Baker N Engl J Med 2021;385:1827-1829 | Published Online November 6, 2021 #From: NY Times The Quiet Scientific Revolution That May Solve Chronic Pain David Dobbs, The New York Times New science is rewriting the book on chronic pain — and may make treatment more accessible. #From: Jstor Africa’s Mighty Baobabs Sub-Saharan Africa’s iconic baobab trees are experiencing die-offs at an alarming rate. What makes these distinctive trees so unique? Baobob trees are iconic images of Sub-Saharan Africa, towering above arid plains with their massive trunks and spreading limbs. The impressive trees caught the eye of French artist Antoine de Saint-Exupéry, famously gracing his children’s classic “Un Petit Prince.” But on the edges of their range, Africa’s baobab trees are dying, including nine of the oldest thirteen specimens. The loss of this tree would ripple across the ecosystem. Baobab trees are widely distributed throughout sub-Saharan Africa, especially in dry, open areas, and have been introduced in other areas. According to economic botanist G.E. Wickens, writing in the Kew Bulletin, these giants are of great importance to both wildlife and people. Birds from mighty eagles to slender swifts nest in baobabs. The canopy and trunk provide homes for the venomous boomslang snake and the diminutive bushbaby, which also helps pollinate the tree. Bees, phasmids, and numerous other insects make their homes in these trees. Baobabs are central to many myths and creation stories. Baobabs also produce a nutritious fruit that is prized by elephants, antelope, monkeys, and bats. Many of these animals will also eat the leaves. Thirsty elephants will chew the pulp in lieu of moisture. People, too, have made use of the baobab for centuries, and they are central to many myths and creation stories. There are innumerable uses for all parts of the tree. The leaves are eaten as a salad and provide food for grazing cattle. The fibres of the trees are used in textiles. The fruit is especially useful; the hard, hollow shells can be used as vessels or fishing bobbers, and the fruit itself can be used to make a type of yogurt. The fruit and other parts of the tree may have medicinal value. But the most creative uses are reserved for the massive, living trunks. Frequently hollow, these spaces have been historically utilized as cisterns for water storage. More recently, baobab trunks have been used as bus stops, and in one case as a nifty pub!  GettyBy: James MacDonald  July 30, 2018  2 minutes How Veterans Created PTSD By Morgan Godvin If humanity has always had wars, it seems natural to assume soldiers have always suffered from PTSD. But PTSD as a recognized diagnosis is relatively new. In fact, PTSD was not added to the Diagnostic and Statistical Manual (DSM) until 1980. Since the close of the Vietnam war, journal articles began to question the link between the mental health consequences of having served in Vietnam, crime, and incarceration rates. But those articles didn’t yet have the PTSD diagnosis in their analytic arsenal—it simply didn’t exist. Now that it does, contemporary articles retroactively apply what we now know as PTSD to centuries-old accounts of veterans suffering mental health issues. To understand the modern discourse around PTSD and incarceration, it is imperative to understand its evolution through history. Read More #De: Vera E. Veríssimo #From: Quanta Magazine MATHEMATICAL PHYSICS | ALL TOPICS   A New Theory for Systems That Defy Newton’s Third Law By STEPHEN ORNES In nonreciprocal systems, where Newton’s third law falls apart, “exceptional points” are helping researchers understand phase transitions and possibly other phenomena. Read the article COSMOLOGY   Laws of Logic Lead to New Restrictions on the Big Bang By CHARLIE WOOD Physicists are translating commonsense principles into strict mathematical constraints on how our universe must have behaved at the beginning of time. Read the article Related:  Physicists Uncover Geometric ‘Theory Space’ by Natalie Wolchover (2017) IMMUNOLOGY   The Brain Can Recall and Reawaken Past Immune Responses By ESTHER LANDHUIS The brain not only regulates some immune responses, but also stores and retrieves “memories” of them. The discovery could help to explain how emotions affect health. Read the blog Related:  Cells That ‘Taste’ Danger Set Off Immune Responses by Carrie Arnold (2019) POLYNOMIALS   Mathematicians Find Structure in Biased Polynomials By TAMAR LICHTER BLANKS New work establishes a tighter connection between the rank of a polynomial and the extent to which it favors particular outputs. Read the blog Related:  Mathematicians Find Long-Sought Building Blocks for Special Polynomials by Kelsey Houston-Edwards QUANTA SCIENCE PODCAST   The New Thermodynamic Understanding of Clocks Podcast hosted by SUSAN VALOT; Story by NATALIE WOLCHOVER Studies of the simplest possible clocks have revealed their fundamental limitations — as well as insights into the nature of time itself. Listen to the podcast Read the article Around the Web An Alternative to One-Size-Fits-All Gravity Some physicists believe that dark matter may not be a form of matter after all. Instead, they think evidence for the mysterious particle can be explained better by altering our theory of gravity. Matt O’Dowd gives a tour through the evolution of increasingly elaborate theories of modified Newtonian dynamics (MOND) for PBS Space Time. Last year, Charlie Wood wrote for Quanta about a new one of those alternatives called “relativistic modified Newtonian dynamics” (RelMOND), in which gravity’s behavior changes on different size scales. As he explained, it has held up to an empirical test that earlier MOND theories failed. The peculiar nature of gravity makes our currently best description of it, Einstein’s general relativity, an easy target for critics. In 2020 Natalie Wolchover wrote for Quanta about what makes gravity different from the other three fundamental forces and why it’s so hard to understand. An Order of Eggs  A Silicon Valley company is trying to rewrite the rules of reproduction: It plans to reprogram mature human blood cells to make eggs and sperms for people who can’t otherwise conceive, Antonio Regalado reports for MIT Technology Review. Mature tissue cells sometimes show an unexpected ability to become less specialized and transform into something like stem cells. In 2018 Jordana Cepelewicz wrote for Quanta about our cells’ ability to heal wounds by turning back their physiological clock to a more fetal state. #From Nature Cmon Cold Virus x COVID19 A worker runs COVID-19 tests at a laboratory in Ankara. (Credit: Mehmet Ali Ozcan/Anadolu Agency via Getty) How some people might thwart COVID Data from dozens of UK health-care workers that was collected in the first weeks of the pandemic suggest a tantalizing possibility: that some people can clear a nascent SARS-CoV-2 infection from their bodies so quickly that it fails to take hold. These people never test positive for the virus nor even produce antibodies against it. Such resistance might be conferred by immune players called memory T cells — possibly those produced after exposure to coronaviruses that cause the common cold. The study’s authors strongly caution that their results do not show that people who have had the common cold are protected against COVID-19. Nature | 5 min read Reference: Nature paper #The Guardian - Fungi The Earth’s Secret Miracle Worker Is Not a Plant or an Animal: It’s Fungi Giuliana Furci, The Guardian Without fungi we don’t have bread, chocolate, cheese, soy sauce, beer or wine. They are also crucial to protecting our climate. #From: Science 50 years ago, scientists were on the trail of ‘memory molecules' Nov 05 2021 7:00 AM In the 1970s, scientists found the first “memory molecule.” Several other candidates have popped up in the decades since. READ MORE