hnmullany

7 ms·

31.
by hnmullany 2y ago
The more competitive the market, the less that companies are able to pass on income tax increases (as opposed to input tax increases - like tariffs). If companies are able to pass along income tax increases, it means that they have pricing
32.
by hnmullany 2y ago
That's because the original responder's data was about medicare fraud although the estimate was provided by the Social Security Administration
33.
by hnmullany 2y ago
Here is an overview I wrote of next generation methods for ammonia synthesis: https://www.linkedin.com/pulse/climatetech-134-de-carbonizin... (FWIW - there are many many promising lab results that turn out to be false
34.
by hnmullany 2y ago
Soil nitrate fixation is also energy intensive. The nitrogenase enzyme takes about 27 ATPs to break a single N2 bond. Legumes feed about a third of their entire photosynthesis output to their nitrogen fixing nodules in order to generate sig
35.
by hnmullany 2y ago
Therapy = Exactly. He thinks he has freedom and agency but he's just being puppeteered by conflicting subconscious forces he doesn't understand and seems to have no insight into. This is a man who's in a self-driving car turn
36.
by hnmullany 2y ago
Vegetation-type is determined by temperature and precipitation. You can't un-desertify a true desert unless you irrigate. Most of these projects that "succeed" - miraculously correlate with good rainfall experience. Most of t
37.
by hnmullany 2y ago
I also found Echopraxia extremely confusing and had to read that AMA to figure out what the hell I just read.
38.
by hnmullany 2y ago
These are all painfully mid reads. (The alien in Hail Mary is about as alien as a rival fraternity brother.) If you want real alien aliens, read Blindsight (Peter Watts).
39.
by hnmullany 2y ago
No-till conservation cropping systems produce better physical soil health and higher soil organic carbon, but they do require higher herbicide use: https://www.researchgate.net/publication/360507198_Are_No-Ti...
40.
by hnmullany 2y ago
Methane and nitrous oxide emissions from these piles would likely be rather high, potentially negating any carbon sequestration benefits
41.
by hnmullany 2y ago
Electric arc furnaces use scrap steel as input - Nucor has been doing this in the US since the 70's. They don't reduce iron ore directly.
42.
by hnmullany 2y ago
I always think of this part from Wonderboys: https://youtu.be/BrVl1hWrWBs?si=UPgOdjd6ujlJ1UKP&t=95
43.
by hnmullany 2y ago
I hacked together an SVG-filter based median filter once. It was horribly inefficient, but it worked: https://codepen.io/mullany/pen/ngJWvx
44.
by hnmullany 2y ago
Biogas plants still need quite a bit of harvested biomass added tp the manure. Manure by itself has too low a Carbon/Nitrogen ratio, and without supplementation, it will over-produce Ammonia, inihibiting the anaerobic bacteria that dig
45.
by hnmullany 2y ago
N-fixation does happen in the soil, but legumes have root nodules that host rhizobium bacteria and can assimilate the N much more easily
46.
by hnmullany 3y ago
Amphibians have low dispersal speeds. Precipitation changes are a big driver, more than temperature: Paper reference: https://www.jstor.org/stable/40419628
47.
by hnmullany 3y ago
Climate change is a catastrophe, but it's not going to be the apocalypse and if we keep working on mititgation, there is a good chance it will merely be a "normal" scale disaster. For example - it's possible that tundra
48.
by hnmullany 3y ago
I believe that it's only thin film solar panels that have high heavy metal content but mono-crystalline panels - which are now the super-dominant technology having drastically decreased in cost - are fairly non-toxic.
49.
by hnmullany 3y ago
Waste brine is substantially more dense than regular seawater, so it tends to form a coherent layer that doesn't mix easily: it's why waste brine sinks to the sea-bed and spreads out in a layer.
50.
by hnmullany 3y ago
Apart from whether the economics make sense brine disposal from desalinization is a big issue. Waste with high salt concentrations can wipe out marine life - it would be nice if this piece took the issue a little more seriously. It's a
51.
by hnmullany 3y ago
If you want a deep dive on drought - this is a good recent book by someone who knows what they're talking about: https://www.amazon.co.uk/Drought-Interdisciplinary-Perspecti...
52.
by hnmullany 3y ago
Here's a summary of several papers taken from a paper I'm in the process of writing: Climate change is expected to alter global water regimes significantly, although there is disagreement on regional specifics and uncertainty in p
53.
by hnmullany 3y ago
There ARE conflicting projections. There are 2 schools - general aridification - which the CMIP6 projections kind of reflect, and the wet gets wetter, dry gets dryer schools. This paper does a good job of summarizing the issues: Zaitchik, B
54.
by hnmullany 3y ago
One of the benefits of flooding is that it keeps soil pathogens in check - so you don't need to use crop rotation when you grow rice. Would be interesting to see what year 2 of this looks like and whether temporary flooding is enough t
55.
by hnmullany 3y ago
You might want to check out their columnar compression & their continuous aggregate blog posts: https://www.timescale.com/blog/timescaledb-2-3-improving-col... https://www.timescale.com/blog/ma
56.
by hnmullany 3y ago
"The Sense of an Ending" is a good book (then movie) with this theme (although in the opposite way) https://en.wikipedia.org/wiki/The_Sense_of_an_Ending
57.
by hnmullany 3y ago
Kudzu does well at forest edges, so you tend to see it by roads - it's not successful in the interior where seedlings don't get enough light.
58.
by hnmullany 3y ago
So, basically, there are price assymmetries (BLS sticker price data), but consumers adjust the mix of cuts of beef they buy in favor of cheaper cuts (scanner data) so the overall effect is to produce something that looks like symmetry?
59.
by hnmullany 4y ago
You still need to add fertilizers that's not what this is about. (And you absolutely drive over crops with tractors)
60.
by hnmullany 4y ago
Abstract from the Nature Sustainability paper: From a single planting, irrigated perennial rice produced grain for eight consecutive harvests over four years, averaging 6.8 Mg ha−1 harvest−1 versus the 6.7 Mg of replanted annual rice, which

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