Recent comments in /f/science

AutoModerator t1_j69cyv1 wrote

Reply to UV light from the sun slowly breaks down plastics on the ocean’s surfaces: researchers calculate that about two percent of visibly floating plastic may disappear from the ocean surface in this way each year by giuliomagnifico

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Some-Redditor t1_j69a59w wrote

Reply to comment by IDontTrustGod in Near-whole ankylosaur remains found, complete with its jagged spikes, most of its limbs, armor coating, and some of its guts and stomach contents. The remains could be a key to understanding aspects of Early Cretaceous ecology, and shows how this species may have lived within its environment. by drewiepoodle

Note that this is an ankylosaur but not Ankylosaurus. No clubbed tail, smaller.

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meco03211 t1_j699x6x wrote

Reply to comment by slo1111 in COVID vaccines and first boosters provided protection to pregnant women during Omicron surge. Looking at unvaccinated women, you still have an increased death rate, and increased neonatal mortality. If you are vaccinated and boosted, especially with a mRNA vaccine, those levels drop by 81%. by Wagamaga

>Vaccinated and with covid.
>-108 had no symptoms >-206 had any type symptoms

Did I read the table wrong? Isn't that all pregnant women?

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PetsArentChildren t1_j69958g wrote

Reply to Near-whole ankylosaur remains found, complete with its jagged spikes, most of its limbs, armor coating, and some of its guts and stomach contents. The remains could be a key to understanding aspects of Early Cretaceous ecology, and shows how this species may have lived within its environment. by drewiepoodle

I thought most fossils were bones, shells, and rocks in the shapes of living tissue. What kind of fossils are the skin and guts here?

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Mycousinvindy t1_j6983ki wrote

Reply to comment by RigbyRoadIce in Small, convenient mosquito repellent device passes test to protect military personnel by [deleted]

I mean on another post I already explained I don't pretend to know the ecology of mosquitoes. Their are a multitude of interactions between animals from their predators or plants. I know most mosquitoes don't even drink blood and a lot are pollinators. I believe only female mosquitos drink blood and their male counter part may play a role in the ecosystem. Also their larvae stage may be a major player for some aquatic species. That's off the dome, but how any of these interactions would actually effect I have no clue.

I never said we shouldn't, just that eradicating sections have ripple effects that are largely not always predictable. Accounting for all interactions within nature is nearly impossible and we can only speculate. We can agree upon hypothesis but to state you know the outcome with 100%, truth is asinine.

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tornpentacle t1_j697whr wrote

Reply to comment by Fromnowhere2nowhere in Researchers has found a link in sleep problems and suicidal thoughts and behaviors. A study found sleep disturbances were prevalent among those with lifetime suicidal ideation or a lifetime suicide attempt. by Wagamaga

10% is really high, that's kinda the point they're making. There is a correlation. It can be used as a predictive tool. That's 20x higher than lifetime adult suicide attempts.

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psyon t1_j697spv wrote

Reply to comment by slo1111 in COVID vaccines and first boosters provided protection to pregnant women during Omicron surge. Looking at unvaccinated women, you still have an increased death rate, and increased neonatal mortality. If you are vaccinated and boosted, especially with a mRNA vaccine, those levels drop by 81%. by Wagamaga

Why do those numbers show a drastic difference? 57 of 145 is 39% with no symptoms, and 108 of 314 is 34% with no symptoms.

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firemogle t1_j696h3j wrote

Reply to comment by AntonioPanadero in Researchers has found a link in sleep problems and suicidal thoughts and behaviors. A study found sleep disturbances were prevalent among those with lifetime suicidal ideation or a lifetime suicide attempt. by Wagamaga

When my tinnitus first started it was a loud beeping in both my ears and made it extremely difficult to sleep. I'm talking a few hours a night max, and even that was often interrupted by it.

Thankfully it just went to ringing within a week or two, but even that short time I knew that was not a situation I could live with.

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kemisage t1_j6951hz wrote

Reply to comment by facecrockpot in Researchers unveil the least costly carbon capture system to date - down to $39 per metric ton. by PNNL

Sorry, I am not really familiar with photocatalysis besides my experience with catalytic adsorption of CO2 (no photochemical activation). I worked mostly on homogeneous and heterogeneous thermocatalytic pathways that integrate the CO2 capture and conversion processes, like the one proposed in OP. The photocatalysis group at my company was a lot more connected to and focused on academic research. I believe they were using Cu, Ni, Fe and other metals in the vicinity in their work, even though Ru probably exhibits the highest catalytic activity in general.

It's quite interesting that it can produce hydrocarbons to that length. I have only ever heard of CO and CH4 production via photocatalysis. There was a lot of emphasis on the importance of oxygen vacancies in the research I have heard of (same as it was with thermocatalytic adsorption).

One of the major reasons for contradictory behavior in this domain (again, same as in the case of adsorption) is that many people focus too much on the effect of metals on catalytic activity and selectivity. The support structure plays too big of role to ignore (for example: see this and this), but it's been changing in the recent years, so that's good news.

Anyway, good luck with your theses, both Master's and PhD.

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