spqr0a1

9 ms·

31.
by spqr0a1 7y ago
Meanwhile in New York, the worst hit state in America, masks of all sorts have been illegal in public for the last 175 years. https://newyorkhistoryblog.org/2013/10/halloween-history-new... https://www.
32.
by spqr0a1 7y ago
Have yet to use the mobile apps, but kudos to the Craigslist team for making their website one of the best mobile experiences out there. Loads quickly, easy to navigate, and isn't missing features compared to desktop. Certainly doesn&#
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by spqr0a1 7y ago
Worth noting that both warm-bloodedness and some degree of feathers were almost certainly basal characteristics in dinosaurs. Would be interesting to know if these differences left them especially well suited to the changing climate.
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by spqr0a1 7y ago
Light bulbs are a bad example of the dangers of cartels. Incandescent filaments are much more efficient at higher temperature but burn out quicker. In the common case, savings from reduced electricity cost more than offset the increased rep
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by spqr0a1 7y ago
The article mentions "composite material". From the pictures it is hard to say whether it is fiberglass/polyester, carbon fiber/epoxy or what; but either way these materials are much harder to recycle than steel.
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by spqr0a1 7y ago
Nor is it speedy on a local scale, the article even admits this route has been done faster in 1977.
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by spqr0a1 7y ago
At sufficient photon energy the initial absorption kicks off secondary electrons which blurs the feature edges/limits effective resolution. This problem already exists to some extent with EUV but gets much worse at X-ray energy.
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by spqr0a1 7y ago
By conservation of momentum you won't go much deeper than diving from tamer heights. Still plenty of other trouble to deal with. https://en.wikipedia.org/wiki/Impact_depth
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by spqr0a1 7y ago
You'll find a lot of sintered metal gears these days; Nearly universal in hand power tools for example. They have similar cost advantage as plastic in reduced manufacturing expense compared to machined gears but retain the improved str
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by spqr0a1 8y ago
Antibiotics are a small enough improvement that they could be phased out without much impact to consumers. If demand were there or externalities accounted for, it would be an easy transition. http://www.sandersonfarms.com/wp
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by spqr0a1 8y ago
The usual comparisons are easy to misinterpret since insect productivity is often quoted on a dry weight basis and the data is less robust. But it appears to be as efficient as chicken, or possibly slightly better.
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by spqr0a1 8y ago
In general I’m bullish on biotech but best case for tissue culture meat still leaves me sceptical. Most of the hype focuses around beef substitutes, beef cattle is about as inefficient as animal agriculture gets at ~3% efficient on an energ
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by spqr0a1 8y ago
Pumped storage has ~80% round-trip efficiency. It's as good as lithium batteries. The biggest limitation is that there's not much room for growth. Most good sites for pumped storage have already been built.
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by spqr0a1 8y ago
While other states enacted mask laws in response to the KKK, in New York it was an attempt to maintain one of the last feudal systems in the western world. http://gothamist.com/2012/10/22/anti-mask_law_from_18
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by spqr0a1 8y ago
Soft wheat flour is easy to find. It is available as cake flour in any grocery store.
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by spqr0a1 8y ago
The purine bases are metabolized to uric acid which, in excess, can cause gout and kidney stones. Cooking does not modify them in a relevant way.
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by spqr0a1 8y ago
Speculating that they plan to use hydrogen-reducing bacteria: This will require substantial post-processing since bacteria have too much RNA and DNA to safely be a major dietary component for humans. Since the website mentions a Mars play,
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by spqr0a1 9y ago
You're right that Liu's paper does use external electrodes. And as for Sakimoto's paper it's true that the cadmium should be reusable indefinitely, but if you read the second page it's clear than cysteine is consume
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by spqr0a1 9y ago
This appears to be a based on a paper from last year. http://science.sciencemag.org/content/351/6268/74 While good and interesting work, there's a lot left to do. They're using cysteine as a reducta
50.
by spqr0a1 9y ago
Expanding on this tangent, it was closer to $300 in goods (as well as indefinite food and lodging for anyone in the tribe and a tacit assumption of military aid). Assuming just the tangible assets were invested in the most obvious way at th
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by spqr0a1 9y ago
In a high use setting like grid storage, the cost per charge cycle is a more important metric. Many lithium systems are only rated for ~1000 deep cycles. Since this redox-flow system is advertised at 10,000 cycles, it could end up being muc
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by spqr0a1 9y ago
Called an Alexanderson alternator for those curious. https://en.wikipedia.org/wiki/Alexanderson_alternator
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by spqr0a1 10y ago
Many small business insurance policies only cover <$10,000 in cash on hand. So plenty of legit businesses get flagged for trying to maintain their coverage and minimize risk.
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by spqr0a1 10y ago
It's even worse than that, gas usage (tax revenue) scales linear with weight at low speed. Road damage scales as the fourth power of axle weight! Large trucks pay nowhere near the cost they impose on our infrastructure.
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by spqr0a1 10y ago
We already have the technology. Many cultures have traditions of collecting nut caches from squirrels. They can harvest as much as 5kg per cache this way.
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by spqr0a1 10y ago
The importance of handwashing can't be overstated, it is one of the keystones of sanitation and public health! Hospital transmitted infections would go way down if staff followed all checklists to a T. It's a matter of defense-in-
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by spqr0a1 10y ago
Unfortunately, just being metal isn't enough. Most metal surfaces in hospitals are stainless steel, which can hold viable pathogens for a week or more. Silver plating would sterilize some pathogens in as little as 5 minutes.
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by spqr0a1 10y ago
Humans absolutely can use ethanol for energy. https://en.wikipedia.org/wiki/Ethanol_metabolism We net 7 kcal/g from ethanol, (compare to 9 kcal/g fat, or 4 kcal/g carbohydrate/protein.) There'
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by spqr0a1 10y ago
It is possibly to filter gases of similar molecular weight. https://en.wikipedia.org/wiki/Membrane_gas_separation This technique is routinely used to generate concentrated supplies of oxygen or nitrogen, but is wildly
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by spqr0a1 10y ago
The northeast has quite a variety of mast crops: Shagbark hickory, black walnut, butternut, beech (my favorite roasted but very small) and to a lesser extent hazelnut. But in its time the chestnut was by far the most consistent and prolific

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