3.111 AMICOR (25)

 3.111 AMICOR (25) 

AMICOR 3.110 (semana passada - link de correção) houve um erro na versão inicial

#Dra. Valderês Antonietta Robinson Achutti (*13/06/1931+15/06/2021)

Estava feliz!...Deve ter sido no México em 1994

#Nature Briefing   8Bi

The world’s population hit eight billion on 15 November, according to United Nations estimates. (Jean-Marc Zaorski/Gamma-Rapho/Getty)

World population hits eight billion According to United Nations models, the world’s population will reach eight billion people today — less than a century after the planet supported just two billion. Rapid growth has been driven by advances in public health and medicine, which have allowed more children to survive to adulthood. At the same time, fertility rates stayed high in lower-income countries. But growth is slowing, and, within a few decades, Earth’s population will begin to shrink. Today, almost half the people on Earth live in places where lifetime fertility is below 2.1 births per woman — roughly the level required for populations with low mortality to stop growing in the long run. Most of the projected increase in the global population between 2022 and 2050 is expected to occur in just eight countries: the Democratic Republic of the Congo, Egypt, Ethiopia, India, Nigeria, Pakistan, the Philippines and Tanzania. India is projected to surpass China as the world’s most populous country in 2023. Nature | 4 min read Reference: UN Population Division Data Portal

#IHME 

#The Heart.org

New Recommendations for Hyperglycemia Management

Neil Skolnik, MD. DISCLOSURES November 14, 2022

#Sciencenews

MALTE MUELLER/FSTOP/GETTY IMAGES PLUS

New brain implants ‘read' words directly from people's thoughts

NOV 15 2022 7:00 AM

In the lab, brain implants can translate internal speech into external signals, technology that could help people who are unable to speak or type. READ MORE  

#Nature

Locating the moral-dilemma centre of the brain

© KATERYNA KON/SCIENCE PHOTO LIBRARY/Getty Images

In moral-dilemma tests, people with damage to a brain region called the basolateral amygdala seldom chose to sacrifice one person even if it would save the lives of thousands of others.

A small, almond-shape structure, the amygdala has been dubbed the fear centre of the brain. Experiments with rodents have indicated that the basolateral amygdala plays a critical role in decisions that require weighing the cost of a sacrifice against the benefit of the outcome. But it wasn’t known whether this carries over to people.

Now, a team led by researchers from the University of Cape Town in South Africa has found compelling evidence that humans use the basolateral amygdala when making such judgements.

They found that five people with damaged basolateral amygdalas due to a rare genetic condition frequently opted to save one person even if it would result in the deaths of thousands.

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References

1. PNAS 119, e2119072119 (2022). doi: 10.1073/pnas.2119072119

Roots determine dominant biome

31 August 2022

© Martin Harvey/The Image Bank/Getty Images

Belowground competition for scarce resources fought by plant roots plays a much bigger role than previously thought in determining boundaries between biomes.

Abiotic factors such as geology, climate and fire regimes have been thought to largely determine the dominant biome in an area.

But now, a team that included researchers from the University of Cape Town in South Africa has shown that the root strategies that plants employ to obtain nutrients from the soil can determine the biome.

In a four-yield field study, the team investigated the sharp boundaries between two very contrasting biomes: one (forest) dominated by a small number of trees and the other (Fynbos) with great plant diversity that included many shrubs. The two biomes occur in areas with identical climate and geology.

The team found that the different root strategies employed determined whether forest or Fynbos dominated.

References

1. PNAS 119, e2117514119 (2022). doi: 10.1073/pnas.2117514119

#Facebook Quantum Physics

# De Gilberto Schwartsmann

Available online !

#Na próxima semana (quarta feira)

De nosso querido primo arquiteto 

#SIMERS

Preocupado com o fechamento de mais de 200 leitos, o Simers lançou a campanha “Salvem o Beneficência Portuguesa”. O presidente Marcos Rovinski, em vídeo, alertou sobre o processo de negociação para quitar dívidas trabalhistas no valor de R$ 35 milhões. Assista ao vídeo no canal do Simers no Youtube:

#

FLUID DYNAMICS | ALL TOPICS   Computer Proof ‘Blows Up’ Centuries-Old Fluid Equations By JORDANA CEPELEWICZ For more than 250 years, mathematicians have wondered if the Euler equations might sometimes fail to describe a fluid’s flow. A new computer-assisted proof marks a major breakthrough in that quest. Read the article

COSMOLOGY   Why This Universe? New Calculation Suggests Our Cosmos Is Typical. By CHARLIE WOOD Physicists have calculated that the universe has a higher entropy — and is therefore more likely — than alternative possible universes. Read the article Related:  Physicists Rewrite a Quantum Rule That Clashes With Our Universe By Charlie Wood DEVELOPMENTAL BIOLOGY   The Gut Microbiome Helps Social Skills Develop in the Brain By JOANNA THOMPSON New research in fish suggests that gut microbes can have a crucial early influence on the brain’s social development. Read the blog Related:  How Microbiomes Affect Fear By Elena Renken (2019) QUANTIZED COLUMNS   How to Think About Relativity By SEAN CARROLL Albert Einstein’s ideas about space-time aren’t exactly intuitive, and they aren’t exactly Einstein’s, either. Read the column Around the Web Thought-to-Speech Researchers announced that they have developed a brain implant that can read words directly from a user’s thoughts. The device could aid communication with people who are paralyzed or have other physical impairments, reports Laura Sanders for Science News. In science fiction, brain-machine interfaces often have the ability to control thoughts and behaviors. But in 2021 R. Douglas Fields wrote for Quanta about why real-world technology is still far from achieving these capabilities. New Win for MOND A new calculation shows that a controversial alternative theory of gravity called Modified Newtonian Dynamics (MOND) accurately predicts how star clusters break apart, reports Sam Jarman for Physics World. Physicists have struggled to find a version of MOND that is consistent with all astrophysical observations. In 2020 Charlie Wood wrote for Quanta about a new formulation that finally managed to describe the cosmic microwave background.

3.110 AMICOR (25)

#Dra. Valderês Antonietta Robinson Achutti (*13/06/1931+15/06/2021)

3.109 - AMICOR (25)

 3.109 AMICOR (25)

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

Milão, maio de 1999

#Slide show com as fotos de abertura

                                    (clicar  em Apresentação de Slides)

#JSTOR

When Did Alchemy End?

By Matthew Wills

Despite royal prohibition, transmutation efforts continued underground long after the widely accepted dates for their demise. Read more...

#LiveScience

Where is Einstein's brain?

(Getty Images)

On April 18, 1955, Albert Einstein died of an abdominal aneurysm at the age of 76, at the University Medical Center of Princeton in Plainsboro, New Jersey. Per his wishes, the legendary physicist's remains were cremated, and his ashes were scattered at an undisclosed location.

Except, that is, for his brain.

 Full Story: Live Science (11/2) 

#Academia SR de Medicina

 https://us02web.zoom.us/j/86587387387

What's the deadliest month of the year?

By Elizabeth Rayne

 published 1 day ago

What is the deadliest month for people living in the United States?

In the U.S., the deadliest month of the year is in the winter. (Image credit: Andrew Bret Wallis via Getty Images)

People die daily from causes ranging from common ailments, such as heart disease, to rare occurrences, such as getting hit by lightning. But during which month do the most deaths happen in the United States?

The deadliest month in the U.S. is the one that heralds the New Year: January. An average of 251,699 people in the U.S. died in January every year between 2010 and 2020, according to a Live Science analysis of the Centers for Disease Control and Prevention (CDC) Wonder database, which tracks how and when people die. In comparison, the averages for the other months for this time period range from 218,102 (August) to 242,475 (December), Live Science found.

#UNDP - Human Development Report

Human Climate Horizons platform released Without concerted and urgent action, climate change will exacerbate inequalities and widen gaps in human development, according to the new Human Climate Horizons (HCH) platform launched today by the United Nations Development Programme (UNDP) and the Climate Impact Lab. Designed to empower people and decision makers everywhere, the platform allows users to see what climate change could mean for people’s lives using hyperlocal data from over 24,000 places around the world. “Focusing on the effect of climate change on issues like mortality, labour and energy use, the new Human Climate Horizons puts vital data and analytics into the hands of policymakers, helping countries to take climate action where it is needed most," says UNDP Administrator Achim Steiner. "For instance, the platform shows that stronger global efforts towards the Paris Agreement’s targets could reduce projected mortality from extreme heat in the year 2100 by more than 80%, saving tens of millions of lives.” Freely available in the lead up to COP27, the HCH platform opens access to an evolving stream of research to help inform action to reduce the unequal effects of rising global greenhouse gas emissions.  Explore full data Follow the conversation on Twitter at @HDRUNDP and hashtag #ClimateFutures # We just published a data explorer on Global Health What do people die from? How do health outcomes and systems vary across the world? Explore data for all countries in our data explorer. Latest posts From $1.90 to $2.15 a day: the updated International Poverty Line How many people die from the flu? Introducing our updated work on Poverty: a new design for our content We just published our new data explorer on Poverty Which countries have put a price on carbon? The mission of Our World in Data is to make data and research on the world’s largest problems understandable and accessible. #Centro Histórico e Cultural da Santa Casa # Our recent publications We published a new data explorer on global health What do people die from? What is the life expectancy in different countries, and how has this changed over time? How do health outcomes and systems vary across the world? Find answers to these questions and many more in our new Global Health Data Explorer. The explorer covers the following high-level areas, with many indicators within each area and data from multiple sources to compare: Child health Maternal health Deaths and disability-adjusted life years (DALYs) Life expectancy Vaccination coverage Infectious diseases Injuries Non-communicable diseases (e.g., cardiovascular disease) Risk factors for death Health systems # ASTROBIOLOGY | ALL TOPICS   A Dream of Discovering Alien Life Finds New Hope By JOSHUA SOKOL For Lisa Kaltenegger and her generation of exoplanet astronomers, decades of planning have set the stage for an epochal detection. Read the article MICROBIOLOGY   Ocean Bacteria Reveal an Unexpected Multicellular Form By CARRIE ARNOLD Marine bacteria normally seen as single cells join together as a “microscopic snow globe” to consume bulky floating carbohydrates. Read the blog Related:  Single Cells Evolve Large Multicellular Forms in Just Two Years by Veronique Greenwood (2021) GEOMETRY   Why Mathematicians Study Knots By DAVID S. RICHESON Knot theory began as a way to explain the fundamental makeup of the physical world. Today, it’s applied in fields including fluid dynamics, electrodynamics and genetics. Read the column Related:  Untangling Why Knots Are Important From The Joy of Why podcast Q&A   A Mathematician Who Fled to Freedom but Still Stares Down Doubts By JORDANA CEPELEWICZ Svetlana Jitomirskaya was born in Ukraine, but left the Soviet Union to escape sexism and antisemitism. Even though her work in mathematical physics has now been honored with one of the field’s top prizes, she finds herself still fighting old battles. Read the interview IN CASE YOU MISSED IT   Inside the Proton, the ‘Most Complicated Thing’ Imagineable By CHARLIE WOOD; Graphics by MERRILL SHERMAN The positively charged particle at the heart of the atom is an object of unspeakable complexity. We’ve attempted to connect the proton’s many faces to form the most complete picture yet. Explore the visual explainer Around the Web Benevolent Blobs Biomolecular condensates are membraneless cellular organelles that dissolve as soon as their function is fulfilled. Many questions remain about these strange objects, reports Elie Dolgin for Nature. The discovery of these unstructured organelles that are driven by phase changes has fundamentally changed our ideas of how cells work. In 2021 Viviane Callier wrote for Quanta about what we’ve learned so far. Corvid Companionship Befriending crows requires patience, routine and peanuts, writes Abby Ohlheiser for MIT Technology Review. But in the end, you could be rewarded with gifts of shells and dead snakes. Crows are extremely intelligent. They remember people’s faces and have complex social structures. They also understand abstract math like the concept of zero, as Jordana Cepelewicz reported in 2021. #Nature - Biomolecular Condensates More than a decade ago, scientists started finding peculiar droplets inside cells. Now researchers are trying to work out how these ‘biomolecular condensates’ form and what they do. (Nature | 12 min read)