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3D-printed clay tiles designed to restore coral reefs

Architects and marine scientists at the University of Hong Kong (HKU) have jointly developed a novel method for coral restoration making use of specially designed 3D printed artificial ‘reef tiles’ for attachment by corals to enhance their chance of survival in the Hoi Ha Wan Marine Park in Hong Kong waters.

The artificial reef tiles are specially designed to aid coral restoration by providing a structurally complex foundation for coral attachment and to prevent sedimentation, one of the major threats to corals. They provide anchors for corals of opportunity, i.e. dislodged coral fragments that are unlikely to survive on their own, giving them a second chance to thrive.

The 128 pieces of reef tile with a diameter of 600mm were printed through a robotic 3D clay printing method with generic terracotta clay and then fired at 1125 degrees Celsius. The design was inspired by the patterns typical to corals and integrated several performative aspects addressing the specific conditions in Hong Kong waters.In addition to the novel design of the tiles, the materials used are more eco-friendly than the conventional use of concrete and metal. The tiles were printed in clay and then hardened to terracotta (ceramic) in a kiln. The team plans to expand their collaboration to new designs with additional functions for seabed restoration in the region.

Read more at newatlas.com or check the source for University of HK press release

This fight didn't start because the people are hungry, not because they are unemployed, not because they have no hope, no future, not because the corruption is out of control, not because the people in power have stolen all the money from oil, gas, ressources. No. It started because one 22 year old girl Mahsa Amini died for not covering her hair. It started for women. Now Men are out there fighting, risking their lives shoulder to shoulder with women. Their mothers, wives, friends, lovers, sisters and daughters. This is the world we need. Everyone standing up, for each other. Against oppression, against ignorance. Long live the spirit of Iran which never dies. Long live this country and its people. After hundreds of years of oppression, they still have a heart of gold that burns in dignity and caring love for one another. Long live people of Iran🇮🇷🕊

🔴Trigger Warning for the video🔴

You probably have heard what's happening in Iran in the wake of Mahsa/Jina Amini's death and how the protests are turning into more than just head coverings and morality police.

You may wonder "What can I do?"

Currently there's no physical aid we can offer that movement. And honestly, considering the West's track record in meddling in that region, it's likely for the best.

However, what we can do is stay informed so as to either know *when* to find aid organizations or how to contact your reps. And importantly, to show Iranians that they have an audience that cares. Especially if you personally know Iranians/Iranian-*insert nationality* and/or Iranian orgs in your area.

Despite how fun it is to rag on Twitter here, it's pretty effective about current events if you have the right sources. Unfortunately since this site frowns on hyperlinking, I'm just gonna give screenshots of accounts.

Above all, I suggest the English version of 1500tasvir (original account is in Farsi). That compiles footage and such of what's going on.

If you want analysis, these ladies are knowledgeable points to start from:

Of course, exercise judgment and perform self care when consuming all this. Because it's really easy to get overloaded, and it's counterproductive to get burnt out.

Why you can’t trust the public to select names…

I think the special charm of early Stephen King is that he’s absolutely terrified of women. Stephen King is afraid if teenage girls the way some people are afraid of snakes and of older women the way people are afraid of spiders. Firestarter, a book I loved as a straight forward power fantasy when I was a young girl, is about a group of villainous government agents and assassins trying to kill an adorable little seven year old girl before she develops critical thinking and incinerates them.

I have a copy of Naomi Alderman’s The Power where Stephen King has a blurb that is something like “this is the scariest book I’ve ever read.” And yes, Stephen King I could absolutely have predicted that you personally find that book terrifying.

THIS IS BRILLIANT.

For some reason the versions of this where he gives two salutes is being deleted and replaced with a version with a quick cut to a cheering crowd so I’ll just share it here 🙃

So this just showed up as an ad for me. Don't know what algorithm put it there, but wtf.

Doxycycline?!?!?! To treat acne?!?!

Buckle up, because a member of the microbiology side of Tumblr is about to go off.

Do yall know what this stuff is. It's an antibiotic. I (and many others) was prescribed this for the first 90 days I was in Afghanistan to prevent malaria. Other times I've seen it used was for when people were exposed to highly pathogenic bacteria while necropsying sick animals. Other uses, to treat venereal diseases caused by bacteria.

What I'm saying is, this stuff will mess you up. It doesn't target a specific single bacteria, it indiscriminately wipes out many bacteria it comes in contact with.

Now, that may seem good right, kill the bacteria causing whatever, but there's a reason antibiotics are for a relatively short term and require a prescription. Not only will it kill the "bad" bacteria, but it will also kill off a lot of your "good" gut microbes, which is really bad in the long-term. We're in a pretty symbiotic relationship with our own microbiota. If you've ever been prescribed antibiotics, you've probably experienced the effects of killing off all the bacteria in your GI tract i.e. diarrhea, malaise, maybe some depression, and a whole host of other side effects. That's because you don't have the "good" bacteria helping you with your digesta. You're not getting all of the nutrients you'd normally get because your ingesta isn't getting fully broken down before passing through you.

Another downside of killing off all of these bacteria, they provide provide an immunologic barrier for you, meaning they have established populations that require resources to sustain themselves. Having an established microbiota makes it harder for a new "bad" bacteria to establish itself before the immune system can mount a strong response because they have to compete for limited resources with a strong well-established gut population. This is one of the main reasons yogurt is a suggested post antibiotic food, it has those good bacteria in it and it helps to reestablish a good gut microbiota. If you wipe everything out though, this provides the bad bacteria with a chance to take up residence and potentially make you VERY sick or even kill you.

Finally, this seems like it'd be a pretty unsupervised deal. We already have a problem with antibiotic resistance from people not following through with a complete antibiotic regiment. Can you imagine what can happen if a bunch of people are taking this, experience the side effects, and then stop taking it. It'll make stronger, more pathogenic bacteria that will cause a lot of harm.

What I'm saying with this is, the purported benefit of getting rid of "acne causing bacteria" (I honestly don't know the validity of this claim, but I am going to be in the literature after I make this post to followup) is definitely not worth the side effects of taking this.

TL;DR version: doxycycline is a strong antibiotic that's used for a lot more than just acne.

Taking it without first consulting a doctor can and will lead to much more harmful effects than clearing up acne.

I'm begging anyone who follows me to please reblog this because word needs to be spread about why this is a REALLY BAD IDEA.