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Eugenefus

25 Aug 2024 - 02:13 pm

Tiny shards of plastic are increasingly infiltrating our brains, study says
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Human brain samples collected at autopsy in early 2024 contained more tiny shards of plastic than samples collected eight years prior, according to a preprint posted online in May. A preprint is a study which has not yet been peer-reviewed and published in a journal.

“The concentrations we saw in the brain tissue of normal individuals, who had an average age of around 45 or 50 years old, were 4,800 micrograms per gram, or 0.5% by weight,” said lead study author Matthew Campen, a regents’ professor of pharmaceutical sciences at the University of New Mexico in Albuquerque.
“Compared to autopsy brain samples from 2016, that’s about 50% higher,” Campen said. “That would mean that our brains today are 99.5% brain and the rest is plastic.”

That increase, however, only shows exposure and does not provide information about brain damage, said Phoebe Stapleton, an associate professor of pharmacology and toxicology at Rutgers University in Piscataway, New Jersey, who was not involved in the preprint.

“It is unclear if, in life, these particles are fluid, entering and leaving the brain, or if they collect in neurological tissues and promote disease,” she said in an email. “Further research is needed to understand how the particles may be interacting with the cells and if this has a toxicological consequence.”

The brain samples contained 7% to 30% more tiny shards of plastic than samples from the cadavers’ kidneys and liver, according to the preprint.

“Studies have found these plastics in the human heart, the great blood vessels, the lungs, the liver, the testes, the gastrointestinal tract and the placenta,” said pediatrician and biology professor Dr. Philip Landrigan, director of the Program for Global Public Health and the Common Good and the Global Observatory on Planetary Health at Boston College.

“It’s important not to scare the hell out of people, because the science in this space is still evolving, and nobody in the year 2024 is going to live without plastic,” said Landrigan, who was not involved with the preprint.

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25 Aug 2024 - 11:37 am

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23 Aug 2024 - 08:30 pm

Мы с мужем долго думали, как решить наш жилищный вопрос... Ипотеку нам не одобряли, да и платить такие проценты просто не под силу. Случайно услышали о "Бест Вей" и Романе Василенко от коллеги. Решили попробовать. Роман оказался очень приятным человеком, всё доступно объяснил. Внесли первый взнос, а через несколько месяцев уже держали в руках ключи от нашей новой квартиры! Это просто не верится! Теперь спокойно выплачиваем оставшуюся сумму и знаем, что через несколько лет квартира будет полностью нашей. Спасибо огромное за такую возможность!

Danielageli

23 Aug 2024 - 08:08 pm

Мне кажется, что вся эта ситуация с уголовным делом против «Бест Вей» и «лайф из гуд» — это какая-то огромная ошибка. Кооператив помогал тысячам людей получить своё жильё на очень выгодных условиях. Я сам благодаря им смог купить квартиру. Теперь же, когда счета кооператива арестованы, мы, пайщики, страдаем из-за этого. Три девушки и парень, которые сейчас сидят в СИЗО, явно не преступники. Они просто выполняли свои обязанности. Надеюсь, что суды обратят внимание на реальные факты, а не на выдумки следствия, и отпустят невиновных людей.

Waynelor

19 Aug 2024 - 05:43 pm

Inside a heat chamber
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Kreycik had almost everything on his side when he went running on that hot day: he was extremely fit, relatively young and was an experienced runner.

While some people are more vulnerable to heat than others, including the very old and young, no one is immune — not even the world’s top athletes. Many are expressing anxiety as temperatures are forecast to soar past 95 degrees this week in Paris, as the Olympic Games get underway.
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Scientists are still trying to unravel the many ways heat attacks the body. One way they do this is with environmental chambers: rooms where they can test human response to a huge range of temperature and humidity.

CNN visited one such chamber at the University of South Wales in the UK to experience how heat kills, but in a safe and controlled environment.

“We’ll warm you up and things will slowly start to unravel,” warned Damian Bailey, a physiology and biochemistry professor at the university. Bailey uses a plethora of instruments to track vital signs — heart rate, brain blood flow and skin temperature — while subjects are at rest or doing light exercise on a bike.

The room starts at a comfortable 73 degrees Fahrenheit but ramps up to 104. Then scientists hit their subjects with extreme humidity, shooting from a dry 20% to an oppressive 85%.

“That’s the killer,” Bailey said, “it’s the humidity you cannot acclimatize to.”

And that’s when things get tough.

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18 Aug 2024 - 06:29 pm

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18 Aug 2024 - 04:59 pm

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18 Aug 2024 - 07:03 am

Johannes Kepler thought he sketched Mercury orbiting across the sun. What he actually captured has solved a solar mystery
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German astronomer Johannes Kepler made sketches of sunspots in 1607 from his observations of the sun’s surface — and centuries later, the pioneering drawings are helping scientists solve a solar mystery.

Even though everything in the solar system revolves around the sun, scientists have yet to unlock many of the star’s secrets.
However, studying the variability of the sun over time, including the solar cycle, could answer some of the most longstanding questions about the fiery orb and how it changes.
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Some of those questions revolve around solar activity in the 17th century, which was a pivotal time for studying the sun.

Astronomers observed sunspots with telescopes for the first time in 1610. At the same time, the sun was making an unusual transition into an extended period of weakened activity. And Kepler’s long disregarded sketches, overlooked because they were drawings rather than telescopic observations, could provide crucial historical insights.

A new study that recreates the circumstances during which Kepler made his drawings appeared on July 25 in The Astrophysical Journal Letters.

“Kepler contributed many historical benchmarks in astronomy and physics in the 17th century, leaving his legacy even in the space age,” said lead study author Hisashi Hayakawa, assistant professor at Nagoya University’s Institute for Space-Earth Environmental Research, in a statement.

“Here, we add to that by showing that Kepler’s sunspot records predate the existing telescopic sunspot records from 1610 by several years. His sunspot sketches serve as a testament to his scientific acumen and perseverance in the face of technological constraints.”

The sun’s tumultuous activity
The sun experiences an 11-year cycle of waxing and waning activity, known as the solar cycle. Currently, scientists believe that the sun is reaching or nearing solar maximum, the annual peak of its activity for the current solar cycle, called Solar Cycle 25.

Solar maximum is typically associated with an increase in the number of sunspots visible on the sun’s surface. These dark regions, some of which can reach the size of Earth or larger, are driven by the sun’s strong and constantly shifting magnetic fields.

Today, scientists track solar activity using data from ground and space-based observatories, magnetic maps of the solar surface, and ultraviolet observations of the sun’s outer atmosphere.