At least in certain parts of the world, there has been consistent efforts to manipulate the government and political movements for close to a century. It's not as if the US hasn't supported coup d'etats in Brazil, Chile, and other governments in South and Central America.
Funny, there's been quite a few incidents where AI has made up case citations in briefs submitted by attorneys and then the same attorney submitted a LLM generated brief with similar errors when asked to defend themselves from sanctions.
It genuinely depends. The author refers to zainichi koreans, i.e. a pretty large population of koreans that ended up in Japan just before and during WW2. Quite a few of them are still not Japanese citizens despite having lived in Japan for several generations.
It adds fiber, which is the key. The main weakness of ice as a crystal is that as soon as a crack forms it can spread along imperfections in the crystal structure. Putting fibre in it bridges those gaps and stops the cracks before they can get big enough to cause significant weakening.
Alloying copper with tin to make bronze produces a material which is stronger and more durable than either component, and this works because the tin disturbs the copper's crystal lattice, which restricts the mobility of dislocations, which in turn reduces the plasticity of the alloy.
I do not know if cellulose fibers have a similar effect in ice, but in general, if you can trade the feature that is causing a problem for one that will not, you are improving things.
Solo track use at that. I can't imagine that other drivers are going to be all that happy if they get hit by the exhaust from one of the thrusters in a corner.
Gases dissipate very rapidly, even moreso if doing pulsing or whatever. Probably very unsafe for a human standing literally right behind it, but it'd likely have 0 effect on another car at typical driving distance.
Air is mostly nitrogen, about 80%. Pure oxygen as you might be thinking, would be quite dangerous - not only for long-term consumption but also in terms of its effects. Oxygen is fuel for fire so a 100% oxygen environment would quite create the pyrotechnic show! The 'white' you see from the exhaust isn't the exhaust itself - nitrogen is obviously colorless, but the moisture in the surrounding air freezing. It's going to be coming out quite chilly to keep the nitrogen liquified ( boiling temp of something like -196F).
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Whoa, was just watching the video (great link btw). People have been debating the specs, but they're shown unambiguously right here. [1] It has 95 kn peak thrust, 6g peak acceleration, pressure of 5500 PSI, and a min operating temp of -200F.
Of course air is mostly nitrogen. But if you replace 10% of the air with pure nitrogen you go into OSHA-angering levels of oxygen depletion, and if you replace 25-30% you get into serious danger.
Not easily achieved in a tunnel, but much more easily achieved in a garage.
10% of the air replaced with pure nitrogen would be 0.8 * 0.9 + 1.0 * 0.1 = 82% nitrogen, 18% oxygen. That's perfectly safe for brief exposure, which is all it would be before you return to ambient levels.
To create a dangerous scenario you've gotta do something like somehow gas out your entire tank in a garage and then just stand around for a while breathing it in. Kind of an improbable scenario unless somebody is trying a really weird suicide attempt.
The bigger tank apparently holds 250kg of air. That's about 200 cubic meters. A two car garage is likely less than 100 cubic meters.
You wouldn't need to dump nearly an entire tank of nitrogen to reach levels that are immediately dangerous. And oxygen deprivation makes you stupid well before it makes you pass out, with no "lack of air" panic since that is based on CO2 levels, so even when it would be survivable for a couple minutes you might not even think to escape.
Honestly, I've been using a remarkable tablet for reading papers and also as a notebook to jot things down or to work out problems. It's fairly convenient and I think having a pen/paper like experience really helps with retention. Since it's pretty limited on what it can do (e.g. no notifications/no apps really), it's a fairly distraction free experience.
There's other tablets/systems that work similarly and tbh, I think having no apps or limited accessibility is really a bonus for this type of work.
I think all engineering has safety factors of 2 or more. Maybe with the exception of aerospace (mostly space) where materials might be at the limits of what's possible right now so the safety factors are much reduced.
> I think all engineering has safety factors of 2 or more.
Not even close.
For example, a BMW X5 weighs about 2200 Kgs without passengers, and it's GVWR is 2800 Kgs.
If you have five people and heavy bags, you can comfortably exceed the GVWR. You can absolutely break control arms and suspension components in that scenario if you go over a speed bump or hit a pothole (which are real things that exist in the real world, like people doing something unintended and crashing software).
If this needed a 2x safety factor, there would have been no way to build this car.
Even the toughest cars like land cruisers are limited in this way.
Water in the atmosphere doesn't help much when the aquifer that is supplying your water effectively runs out. Even if all that evaporated water comes down as rain in the same region, it still takes years to centuries to get to the aquifer.
A while ago a researcher at the Univ. of Chicago died of the plague. Although most labs use a mutated form that can't get iron needed to reproduce, he had a medical condition that caused an excess of iron in his blood that might have yet the bacteria grow.
However, every year there's a few deaths in the US from the plague because it's present in a variety of animals. If you look worldwide, there's probably on the order of a thousand deaths annually.
In the US, chipmunks out west sometimes carry it. You go to a national park, you see a cute little chipmunk, you decide to feed it (which you're not supposed to do anyway), you get really close to it...
A few people get infected that way. Not a thousand a year, but some every few years.
He was a professor so I think he started long before a NGS kit was even a thing. Also, the rumor seems to have been that he kept some personal items in the same fridge as samples and that there was cross-contamination or a mixup. All very much hearsay though.
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