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#Dra. Valderês Antonietta Robinson Achutti (*13/06/1931+15/06/2021)
Ciudad de Mexico 1994 no museu antropológico, durante celebração dos 50 anos do
#Our World in Data
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#The British Library
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#Nature
An illustration of the quantum experiment to study traversable wormholes. (inqnet/A. Mueller (Caltech)) | |
Wormhole inside a quantum computerPhysicists have sent quantum information through a simulated wormhole in a ‘toy’ universe that exists only inside a quantum computer. The tunnel is analogous to passages through space-time that might connect the centres of black holes in the real Universe. “The surprise is not that the message made it across in some form, but that it made it across unscrambled,” write the authors of an analysis published alongside the study in Nature. Some scientists think that such experiments could help to unite the theories of quantum mechanics and gravity in the simplified realm of toy universes, leading ultimately to the answer to one of the biggest problems in physics: a real-world quantum theory of gravity. Nature | 5 min readGo deeper with an expert analysis by theoretical physicists Adam Brown and Leonard Susskind in the Nature News & Views article (7 min read, Nature paywall) Reference: Nature paper | |
AIs win at Stratego and DiplomacyTwo games that have been long considered extremely difficult for artificial intelligence to master have fallen to machines. DeepMind’s artificial intelligence (AI) system DeepNash has used a combination of reinforcement learning and a deep neural network to master Stratego, a game that requires strategic thinking in the face of imperfect information. And a team at Meta AI has built Cicero, an AI that can negotiate and cooperate in the multi-player game Diplomacy. The achievements could pave the way for real-world applications. Nature | 5 min readReferences: Science paper 1 & paper 2 | |
Men dominate Q&A sessions, even onlineConferences suffer from male-dominated ‘question and manswer’ sessions at both in-person and virtual events, even if they have a good gender balance. Researchers observed a four-day online bioinformatics conference and found that ‘senior men’ (older than 35 years) asked, on average, 9.3 more questions than a junior woman, while senior women asked just 2.3 more questions than a junior man. Possible solutions are more time for question and answer sessions, giving the first query opportunity to a junior woman or taking a short break after the talk to allow the audience to formulate their ideas. Nature | 6 min readReference: bioRxiv preprint | |
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The Nobel laureate spied on by the FBIMicrobiologist Salvador Luria escaped fascist Italy for the United States, where his socialism, support for desegregation and workers’ rights, and opposition to biological and nuclear weapons caught the attention of the FBI. The agency monitored his every move, even after he won the Nobel prize for his work bacteriophages — viruses that invade and often kill bacteria. Science historian Rena Selya’s well-researched book distils the phage pioneer’s turbulent life, writes reviewer and science journalist Alison Abbott — although it regrettably glosses over his thrilling escape across France by bicycle. Nature | 6 min read |
#Quanta Magazine
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#Hospital Moinhos de Vento 95 anos, Jubilado
(23/11/2022) Cumprimentando e agradecendo à Direção do HMV, colegas e demais funcionários que conosco formam uma grande família, lembrei-me também de tantos colegas que não estão mais conosco, mas que fizeram parte dessa história, e contribuíram para que ela tivesse um curso tão feliz. Não posso deixar de chamar e compartilhar com tantos ausentes, entre os quais encontro a Dra. Valderês Antonietta Robinson Achutti, minha saudosa esposa, também credenciada, e com quem repartia sempre as responsabilidades de minha atividade profissional. Aliás, conforme já tive oportunidade de contar muitas vezes, se não fosse ela, eu nem seria médico, pois em 1951, quando ela apareceu em Santa Maria - e na minha vida -, eu estava me preparando para o vestibular de engenharia, e mudei de rumo quando ela me disse que desde o terceiro ano do curso ginasial havia decidido ser médica, e queria ser dona de um hospital. Ficamos setenta anos juntos, e ela também ficou “dona” do Hospital Moinhos de Vento, assim como eu...
#AEON Magazine
What did the Rosetta Stone’s inscription actually communicate?
Video by the British Museum 29 November 2022
There’s a good chance you know a fact or two about the artefact called the Rosetta Stone – namely that, because it was inscribed with a single message written in three different scripts, its discovery allowed archeologists to decode ancient Egyptian hieroglyphs. Or you might have heard that the new Grand Egyptian Museum has been calling for the artefact to be returned to its homeland. However, you may not know some of the most basics facts about the object. For instance, what was its purpose, and what did it actually say? In this video, Ilona Regulski, curator of Egyptian written culture at the British Museum in London, walks viewers through the stone and its ‘decree’, issued during the Ptolemaic dynasty in 196 BCE. In doing so, she reveals how this ancient stele, first unearthed in 1799, was just the first of many copies that have been found throughout Egypt, and what its message can tell us about the transitional period in which it was written. The video supports the exhibition ‘Hieroglyphs: Unlocking Ancient Egypt’, which runs at the British Museum through to February 2023.
#Academia SR Medicina
#Nature Briefing
By blocking a cancer cell surface protein (Xkr8 — shown in green above), researchers prevented a lipid called phosphatidylserine (PS, shown in red) from rising to the cell surface. PS acts as an immunosuppressant, and so preventing it from getting to the surface allows the immune system to find and destroy cancer cells (post-destruction cancer cells shown in grey). Researchers achieved this in mice by developing a nanocarrier that transported two chemotherapy drugs, fluorouracil and oxoplatin, to the tumour. The drugs blocked the surface proteins, and the tumours shrank. “Targeting Xkr8 in combination with chemotherapy may represent a novel strategy for the treatment of various types of cancers,” write the researchers. Reference: Nature Nanotechnology paper (24 November) (Chen, Y., Huang, Y., Li, Q. et al./Nat. Nanotechnol.) Why leukaemia and autoimmunity coincide |
Blood cells from chronic lymphocytic leukaemia. (Steve Gschmeissner/Science Photo Library) |
People with leukaemia often have autoimmune diseases such as rheumatoid arthritis because a mutation causes killer T-cells to go ‘rogue’ and start attacking the body’s own healthy cells. The mutation in the STAT3 gene present in some leukaemia cells seems to be the cause, a study in mice suggests.Reference: Immunity paper (29 November) |
1 comment:
Parabéns, Achutti pelo evento. No meu tempo de estudante (1954-1960), algumas vezes auxiliei o Dr. Edgar Diefenthaeler em cirurgias no Moinhos de Vento; sempre me chamou atenção o primoroso atendimento.
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