#chain

China Business Forumcnbusinessforum@mstdn.business
2025-05-05
China Business Forumcnbusinessforum@mstdn.business
2025-05-02
2025-04-30

🧑‍🔬 Microplastics have been in 'pristine streams' for half a Century — what could that mean for Human Health?

"The inclusion of plastic in the casing of a caddisfly means plastic is entering the food chain since the early 70’s," said lead study author [Auke-Florian Hiemstra].

🖇️Check my Image Description’s🖇️

sciencedirect.com/science/arti

#microplastics #pollution #chemistry #engineering #science #healthcare #media #nature #food #chain #tech #news

“Scientists are still working to understand exactly how microplastics and the chemicals within plastics [such as phthalates and per- and polyfluoroalkyl substances (PFAS)] might affect our bodies”, Tracey Woodruff, a professor at the University of California, San Francisco (UCSF) who studies how pollutants affect reproductive and developmental health, told.

<https://iris.who.int/bitstream/handle/10665/362049/9789240054608-eng.pdf>

Early research has linked plastic exposure to the risk of various health conditions, including heart disease, lung disorders, cancer and Alzheimer's disease. In each of these cases, the link is correlative, so it's not clear if or how the plastics might be contributing to the diseases. In addition, in lab-dish studies, some types of plastics appear to be relatively harmless, while others have been shown to kill human cells in vitro.

In 2024, Woodruff and her team at UCSF's Program on Reproductive Health and the Environment published a systematic review of nearly 2,000 studies on the health effects of microplastics as part of a California state-commissioned report aimed at guiding policy decisions. The review identified potential health effects on respiratory, digestive and reproductive health, and particularly on sperm.

<https://uccs.ucdavis.edu/sites/g/files/dgvnsk12071/files/media/documents/CalSPEC-Report-Microplastics-Occurrence-Health%20Effects-and-Mitigation-Policies.pdf>[ImageSource: Auke-Florian Hiemstra]

This caddisfly casing from 1971 has microplastic in it, the researchers found.

Microplastic pollution from industrial waste has been contaminating freshwater ecosystems for decades, with evidence pointing to this run-off starting in the 1950s to 1970s. Now, though, new evidence suggests the extent of that pollution might be even broader than once thought.

In a study published in the journal Science of The Total Environment, scientists examined the larvae of caddisflies, small insects that build protective casings around themselves using plant material, sand and small stones in their environment. These casings, gathered in the 1970s and 1980s, came from clear, spring-fed streams in the Netherlands that were considered pristine at the time.

⚠️However, the study revealed that the larvae were incorporating plastic particles into their protective casings as early as 1971 — in other words, microplastics had infiltrated even these seemingly untouched ecosystems.⚠️[ImageSource: Pasquale Ciliberti and Isabel van der Velden]

A close-up of a caddisfly casing from 1986.

Microplastics are tiny fragments of synthetic polymers that can take anywhere from hundreds to thousands of years to degrade. They're defined as being between 1 micrometer and 5 millimeters long. 

Today, they seem to be found virtually everywhere: in clouds, the air we breathe, food, drinking water and human blood and breast milk. These particles stem from the breakdown of larger plastics, and in some cases, they are intentionally manufactured for use in certain cosmetics and cleaning products.

<https://magazine.hms.harvard.edu/articles/microplastics-everywhere>

Research suggests that the human body clears out some larger microplastics measuring up to 150 micrometers long, while fragments smaller than 10 micrometers may be absorbed into tissues. But recent research suggests that some plastics in our bodies are even tinier than that.

<https://www.sciencedirect.com/science/article/pii/S0160412024000308>

While what qualifies as "nanoplastic" is still under debate, these ultrasmall particles are typically considered to be any plastic fragments smaller than 1 micrometer (or 1,000 nanometers) in diameter. A human hair, by comparison, is around 80,000 nanometers wide. Nanoplastics are small enough to potentially pass through cell membranes, studies suggest.

<https://www.sciencedirect.com/science/article/abs/pii/S0278691521006426?via%3Dihub>
China Business Forumcnbusinessforum@mstdn.business
2025-04-30
China Business Forumcnbusinessforum@mstdn.business
2025-04-27
Y⃒̸̷̝̜̙ͥͥͥngmaryngmar@social.tchncs.de
2025-04-27

I found it! The weakest link! 😬

I also found a few other things:

That Yato 3 ton farm jack is proper strong (although the foot is slightly crooked now).

This post, unlikely all the others, was concreted in. So I was trying to pull the steel out of the concrete, which lead to chain failure.

DIY store chain is poorly welded.

Cheap crap stainless U-shackles from a random chandlery are sometimes surprisingly strong!

#DIY #Homestead #Fence #Post #FarmJack #Chain #Link

Close-up of a farm jack that was pulling on a fence post (actually a thick steel U profile). The chain has parted and one link dangles open.The failed link in a gloved hand. The failure has occured at the weld, which shouldn't happen unless it's welded badly. There's a second crack on the opposing side that happened later, as the failed link was forced open further.Fence post that help discover the weak link, now extracted from the ground, including a large piece of concrete cast in place with rocks on the bottom and some dirt on it. Bob the head on a stick is looking at it ponderously. Perhaps he considers a stick upgrade. It wouldn't fit you, Bob!
David W. Jonesdancingtreefrog
2025-04-26

Dear Coffee Bean & Tea Leaf:

Your Pure Chocolate drink needs chocolate in it.

Sincerely,
Me.

China Business Forumcnbusinessforum@mstdn.business
2025-04-25
2025-04-24
China Business Forumcnbusinessforum@mstdn.business
2025-04-23
2025-04-22

Chain Breaker 2.5 (feat. Hezekiah Walker, John P. Kee, Fred Hammond, T Church & Zaytoven)...

Provided to YouTube by Tyscot

Chain Breaker 2.5 (feat. Hezekiah Walker, John P. Kee, Fred Hammond, T Church & Zaytoven) (DHaddy Street Mix) · Deitrick Haddon & Voices Of Unity · Hezekiah Walker · John P....

#Breaker #Chain #Church #Feat #Fred #Gospel_artists...
en.bgospel.com/chain-breaker-2

2025-04-22

Chain Breaker 2.5 (feat. Hezekiah Walker, John P. Kee, Fred Hammond, T Church & Zaytoven)...

Provided to YouTube by Tyscot

Chain Breaker 2.5 (feat. Hezekiah Walker, John P. Kee, Fred Hammond, T Church & Zaytoven) (DHaddy Street Mix) · Deitrick Haddon & Voices Of Unity · Hezekiah Walker · John P....

...
en.bgospel.com/chain-breaker-2

Tom Betoek 😎✝️tombetoek
2025-04-22

? 003 – ?? – (?) ✝️⚖️🤍

" ... ???" ✝️⚖️🤍 -o-o- " is a of ?" ( "De is een van ?" ) -o-O- " has been for decades. Some say he now is the island ..." -o-O- " are , ... ...? Are you **...??" -o-O- " that and MUST **... 《》???" -o-O-…

tombetoek.wordpress.com/2025/0

China Business Forumcnbusinessforum@mstdn.business
2025-04-21
Mayvernale Be With YouAvernale
2025-04-20

My OC, Coyote, posing with a staff, by bsky.app/profile/calypsolarts..  This is the model she trains with.  The one she uses in actual combat is more distinctive.

A woman with long, lavender hair posing with a staff behind her back.  She wears a silver bolero jacket, blue mini-dress, blue knee-high boots, sky blue pants with a low waist, and a bronze collar with a chain that drapes down to and around her waist, where it is secured with a lock.  The mini-dress is low cut and is open below her navel to expose a heart-shaped tattoo.
China Business Forumcnbusinessforum@mstdn.business
2025-04-19
Jacob Nathaniel Tolley🔞🏳️‍🌈🏳️‍⚧️jacobtolley1u1.bsky.social@bsky.brid.gy
2025-04-17

Today I want to boost my following base so let's start a chain letter and see how many followers I can get if I can get 23k followers with this chain I will thank you guys so much so let's spread the word #follow_me #chain #23k #follow

China Business Forumcnbusinessforum@mstdn.business
2025-04-17

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