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veemjeem commented on Nanoplastic Ingestion Causes Neurological Deficits   the-scientist.com/news-op... · Posted by u/pseudolus
merlinran · 3 years ago
28% is not majority. Plus the hard part shouldn't prevent us from doing the easy part with much higher ROI.
veemjeem · 3 years ago
I did some more research, and it looks like tires are the 2nd largest part of the pie in terms of single origin. The largest is textiles which are 35%.
veemjeem commented on Air quality monitors: paying more does not get you more accuracy   airgradient.com/open-airg... · Posted by u/ahaucnx
baby-yoda · 3 years ago
Does AirGradient have any options that are connected and powered via PoE? The Awair Omni looks like a great option for what I imagine I'd like to set up but it would be nice to support Air Gradient if possible.
veemjeem · 3 years ago
The AirGradient uses the D1 wemos as the microcontroller & network connectivity. There are D1 ethernet shields that have PoE that would make it pretty easy to slap on top of the d1 and provide this exact feature, however you might need to tweak the code a bit to switch the network access from wifi to ethernet.
veemjeem commented on Nanoplastic Ingestion Causes Neurological Deficits   the-scientist.com/news-op... · Posted by u/pseudolus
EGreg · 3 years ago
Sorry people, but you can't stop it:

1. https://www.euronews.com/green/2022/04/11/how-much-plastic-d...

2. https://www.theguardian.com/environment/2022/mar/24/micropla...

3. https://www.theguardian.com/environment/2019/apr/15/winds-ca...

Because humanity and capitalism's incentives are just wrong. Bottling companies like Coca Cola and Snapple have long switched to plastic bottles, and externalized the cost to the environment.

My recommendation would be to tax negative externalities and redistribute all of it as a UBI to the people of the country. Simple and effective, but apparently the governments have been moving way too slowly.

What's worse is that the governments perpetuate a lie to the public, making them think they can individually make a difference. In the case of plastic the lie was "recycling", when in fact the plastics were simply shipped to China, who dumped them in landfills and rivers.

But the government tells the individual that they can't have a plastic straw or bag. It's all there to distract the individuals from banding together and demanding the costs be imposed on the corporations which put out metric tons every day. I write more about this phenomenon here: https://magarshak.com/blog/?p=362

And it's not just the bottling companies. It's all the packaging. It's the clothes using synthetic fabrics like polyester, which generate microplastics flushed in every wash. And so on. Convenience is when you'd rather have a one-time-use spoon shipped from China, than wash and re-use a spoon. Your ancestors re-filled containers.

If we made it more costly for these companies, they'd long ago have researched biodegradable alternatives.

veemjeem · 3 years ago
I've read that the majority of microplastics come from tire wear (national geographic quoted 28% of the total), and because there's no good alternative to wheel tires, it's unlikely we'll see a decrease of pollution here. So even if we found an alternative to bottles, plastic bags, clothing, etc, it still won't make a dent in pollution unless we convince the world to use a form of public transit that doesn't make use of plastic tires.

We could reduce human consumption of the particles if we only consumed lab-grown meat & hydroponically grown vegetables where the water is ultra-filtered before use.

veemjeem commented on Moskva cruiser sank while being towed in a storm – Russian Defense Ministry   tass.com/russia/1438045... · Posted by u/globalise83
WJW · 4 years ago
Sure!

1) Let's look at the ship I am most familiar with, the NL Navy Zeven Provicien class (https://en.wikipedia.org/wiki/De_Zeven_Provinci%C3%ABn-class...). It generally would have 2 types of anti air defense missiles, the SM-2 and the ESSM (both US-built, see wikipedia for their publicly available specs). Apart from that, there are electronic and flare/chaff passive countermeasures and finally a Goalkeeper CIWS for last-mile defense. I have little doubt that we would have been able to take on an attack of 2 Harpoon missiles. OTOH, the Neptune missiles are a lot more modern than the Harpoon and modern missiles have been known to do tricky things like having a pseudo-random noise generator generate corkscrew like maneuvers to evade the defensive fires. I'll also note that the Moskva was built in the early 80s (though refitted after the fall of the Soviet Union) and it was apparently quite stormy (so additional radar noise from wave reflections may have been a thing). All in all, IMHO it seems quite likely that they were indeed hit. Warships don't just suddenly catch fire, and especially in warzones when the opponent has sophisticated anti ship missiles it seems more likely that the fire was caused by a missile impact.

2) For older warships it could be possible. Usually they would have a rotating air warning radar and a dedicated targeting radar for missile guidance. An example would be the STIR (https://www.thalesgroup.com/en/stir-tracking-and-illuminatio...) on NATO vessels, basically a powerful narrowbeam radar on a servo pedestal. There would rarely be more than two or three on a vessel, so it might be possible to distract all of them with several drones. Modern naval radars use active phased array technology where the amount of tracked targets is no longer the bottleneck (in practice, you'd need dozens of missiles), but as mentioned before the Moskva is from the early 80s so they would probably not have this yet. So it could happen, especially in a stormy sea where the waves provide a lot of additional radar noise, but it is really only speculating without a lot more information than we have right now.

veemjeem · 4 years ago
Do you know what happens to explosives on sunk ships generally? Are they usually left at the bottom of the ocean, and could they have the potential to detonate?
veemjeem commented on You and the planet need a heat pump   wired.com/story/why-you-t... · Posted by u/g8oz
faitswulff · 4 years ago
Fellow midwesterner here. The last time I looked into it, heat pumps were significantly less efficient in cold temperatures. Is that still the case?
veemjeem · 4 years ago
Still better than electrical resistive heating (space heaters) which has a COP of 1. Even when it's super cold outside, heat pumps with a HPSF around 10 would still have a COP around 2. See the graph: https://www.researchgate.net/figure/e-efficiency-of-an-Air-S...

Of course space heaters are far easier to move around the house compared to a mini-split system and would use less power if you only plan to heat a small room.

veemjeem commented on You and the planet need a heat pump   wired.com/story/why-you-t... · Posted by u/g8oz
veemjeem · 4 years ago
Sadly most popular window a/c units don't have true heat pump abilities. Usually the heating portion of window units use resistive heating.
veemjeem commented on The case against masks at school   theatlantic.com/ideas/arc... · Posted by u/hrl
spookthesunset · 4 years ago
And why is that the fault of the general public? These hospitals had 2 years to figure this out.
veemjeem · 4 years ago
Why would it be the fault of hospitals? They have no incentive to construct more ICUs. A large percentage of covid patients entering the ICU for ventilation will die, and you can't collect on a dead patient. ICUs are a money hole -- they require specialized equipment, isolation construction, experienced medical team, etc. If a hospital is motivated by profit, they would construct as few ICUs as legally possible.
veemjeem commented on The case against masks at school   theatlantic.com/ideas/arc... · Posted by u/hrl
xondono · 4 years ago
> Wtf, masks absolutely work.

I’m not that sure. A lot of experts agree that there’s not much quality data to reach that conclusion.

Most “definitive proof” comes from mechanical studies (they measure how far your saliva is reaching with and with out mask), but that’s not the only important factor.

Masks are not designed for full day use, and by wearing them everyone is constantly touching their face, mouth and nose. This sounds to me like a way worse infection vector. Viruses like covid can survive for a long time on surfaces.

It’s hard to separate the effects of masks from that of hand sanitizer, vaccinations, or other measures taken.

veemjeem · 4 years ago
Nurses working in the ICU during the beginning of the pandemic would use the same mask for an entire week without losing efficacy. If the masks didn't work, we would have seen a huge number of them infected in the NYC hospitals but that didn't happen. Most viruses don't survive very long on surfaces.
veemjeem commented on Show HN: I bought and tested the filtration of every mask on Amazon   armbrustusa.com/pages/mas... · Posted by u/lloydarmbrust
koyote · 4 years ago
That's a real trove of information!

I see there are no cloth masks tested. I'd love to know how useful they are (or can be) as I much prefer being able to reuse my masks.

Edit: just realised that both Type and Style can be cloth and the cloth ones are presumably all under Style. All of them failed :(

veemjeem · 4 years ago
you can reuse n95s, nurses do it all the time. let them sit near a sunny window, off-smells will dissipate in a day. each mask is good for around 8 hours of continuous usage, but it's likely that the mask becomes too soiled before the electrostatic charge is neutralized.
veemjeem commented on N-Acetylcysteine to Combat Covid-19: An Evidence Review   ncbi.nlm.nih.gov/labs/pmc... · Posted by u/SQL2219
imapeopleperson · 4 years ago
It seems odd the government would suddenly stop this from being available OTC
veemjeem · 4 years ago
walmart has them otc

u/veemjeem

KarmaCake day1103April 7, 2009View Original