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Eugenefet

26 Aug 2024 - 03:34 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 A preprint is a study which has not yet been peer-reviewed and published in a journal.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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Jeremymib

26 Aug 2024 - 09:56 am

Balanset-1A offers a portable solution for dynamic balancing and vibration analysis, making it perfect for balancing industrial rotors such as crushers, fans, and turbines.

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[b]Vibrometer Mode:[/b]

Tachometer: Ensures precise rotational speed measurement (RPM) for accurate analysis.

Phase: Provides accurate phase angle readings for thorough vibration assessment.

1x Vibration: Delivers in-depth analysis of the main frequency component in vibration signals.

FFT Spectrum: Provides a comprehensive view of the vibration frequency spectrum for thorough analysis.

Overall Vibration: Provides continuous monitoring of overall vibration levels for maintenance.

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Last Session Recovery: Simplifies the process by resuming the previous balancing session.

Tolerance Calculator (ISO 1940): Uses ISO 1940 guidelines to calculate allowed imbalance.

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26 Aug 2024 - 07:47 am

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Mandybes

26 Aug 2024 - 07:28 am

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кроме того, обучение в вузе стоит немалых денег, http://obschestvoznanieschd.blogspot.com/2014/04/blog-post_9.html а их также следует где-то взять.

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