Science

Ask my kids to chat with science teacher on plastics- sadly then I looked at it just a bit!


"Highlights

•A high abundance of microplastics was detected in human placentas using LD-IR.
•PVC, PP, and PBS were the dominant polymer types of microplastics.
•Microplastics <100 μm were the main composition.
•Fragment microplastics dominated small particles (<200 μm).




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My decking made out of recycled plastic is still a delayed issue?

Happily there is options starting besides stop using plastics

"Ideonella sakaiensis is a bacterium from the genus Ideonella and family Comamonadaceae capable of breaking down and consuming the plastic polyethylene terephthalate (PET) using it as both a carbon and energy source."

The Race To Develop Plastic-Eating Bacteria

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Originally Posted by NavyDiver

Yep - given 10000000 of people with COVID are suffering short and long term from - you guessed- Hope they do it will. Note of course the vaccine Myocarditis reports are about the same as every day and last about a day or less and require panadol at most and you can see ( or not[biggrin]

PS got my MOBBIV Bivalent Covid vaccine today Jackson Court PharmacyAttachment 181411

See you later- I am off for a 10km run now[thumbsupbig]

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Can see why a head like that is best wrapped in neoprene and hiding behind a mask [emoji41][emoji851][emoji56]

Just scathing the surface
RNA vaccines rose to prominence during COVID, but we'''ve only scratched the surface of their potential - ABC News

"Beyond mRNA, there exists an unexplored universe of other types of RNA in human biology that play a role in everything from child development, to memory formation, to the development of disease."

The speed of change in Medical and technology is so cool to watch! [thumbsupbig] Will they make more money giving hair back on head of people as bald as me? [bigwhistle] Hope not- so many more important things to help with

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Originally Posted by NavyDiver

Will they make more money giving hair back on head of people as bald as me? [bigwhistle] Hope not- so many more important things to help with

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Perhaps the eradication of mature age, nasal and otic hair is more important? [smilebigeye]

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Originally Posted by Saitch

Perhaps the eradication of mature age, nasal and otic hair is more important? [smilebigeye]

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I have them in abundance [bigrolf][bigrolf][bigrolf]

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Originally Posted by NavyDiver

I have them in abundance [bigrolf][bigrolf][bigrolf]

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Quite some time ago, on the Js, 'Dr. Karl' went into explaining the reasons for their proliferation in those areas, as age increases. The terms escape me now.

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Originally Posted by NavyDiver

I have them in abundance [bigrolf][bigrolf][bigrolf]

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Same here - bit of a pity about the lack of them on top.

When my son had his graduation from Monash after his science degree they had a couple of Australia's top scientists there as speakers.
The main take away for the grads was and I quote " check and question every single thing you do and double check all results because the more we think we know the more we realise there is so much we don't know and how much we thought we knew was wrong.

Take from that what you will, the science used to justify Victoria's desal plant from Australia's finest is the perfect example of how they can get it so wrong, thanks Tim for the insight and wasted funds

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Originally Posted by jonesfam

Some astronauts went that way due to NASA using, I think, pure oxygen in the Gemini space capsules.

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This occurred at the height of the Cold War.

Had the Russians and Yanks been more friendly, the Russians could have warned NASA of the potential danger of pressurised Oxygen use.

Years before the NASA fire, the first ( TO BE ) Cosmonaut was incinerated in a similar type fire.

He was in a pressurised compartment, practising for the first space flight when he dropped a cloth on a heating plate and it instantly ignited in the high oxygen atmosphere and he died very quickly.

This accident caused the Russians to use a different atmospheric mix in their space crafts, to what NASA used, but the Russians never told NASA why their had a different mix, and a number of years later, NASA went on to commit the same fatal mistake.

I don't think it needed the Russians and Americans to talk to have avoided this. Major accidents simply from an oxygen atmosphere let alone pressurised date back to the earliest use of medical oxygen, and probably from the earliest use of oxygen in industry.

It was, or should have been, a calculated risk, that included consideration of the flammability of the capsule interior materials in an oxygen atmosphere as well as considering potential ignition sources. This did not need contact with the Russians, just a skim of the available literature. Or even highhschool chemistry - I clearly remember that an easy identifier of an oxygen enhanced atmosphere is that it causes a glowing bit of wood to burst into flame.

The use of an oxygen atmosphere in the spacecraft enables the use of a lower atmospheric pressure, which has a number of advantages, and oxygen storage is lighter than for a composite atmosphere.