Recent comments in /f/science

My_Body_The_Mystery t1_j969ldi wrote

Reply to Scientists create carbon nanotubes out of plastic waste using an energy-efficient, low-cost, low-emissions process. Compared to commercial methods for carbon nanotube production that are being used right now, ours uses about 90% less energy and generates 90%-94% less carbon dioxide by Wagamaga

Plastic producers and users have to be put on the hotplate about only producing recyclable plastics. Also plastics should be easily categorized. Any type of waste plastics is always a huge mish-mash of different kinds (and deemed contaminated) plastics that cant be recyclable. That's the biggest problem with all of these new ways of recycling that needs to be addressed first

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CannedVestite t1_j969kd1 wrote

Reply to comment by xShadowZephyrx in Females' propensity to deposit more fat in places like their hips, buttocks and the backs of their arms, so-called subcutaneous fat, is protective against brain inflammation, which can result in problems like dementia and stroke, at least until menopause, scientists report. by QualityWork_

This just makes the headline even more stupid.

"Womn store fat around their hips and butt because its less dangerous than storing it in the brain"

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ARM_over_x86 t1_j969aup wrote

Reply to comment by revnobody in Reflexive fear responses tend to linger in people with anxiety disorders, study suggests by chrisdh79

Yeah so, it's supposed to be standard practice to be evaluated for trauma after accidents, there's an abudance of literature showing, for example, over 20% of road traffic accident survivors develop PTSD. I study osteopathic medicine and they really emphasize the importance of this, one case study was similar to yours so I asked out of curiosity, it seems doctors will often brush off the possibility if they don't immediately detect signs of trauma on the patient, or might even assume those signs to be temporary as a result of shock. Hope you can achieve a full recovery soon.

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FlipFlopX t1_j9686l5 wrote

Reply to comment by SaishDawg in Physicists nail down the most precise value yet of the electron magnetic moment. A newly measured value of an electron’s magnetic moment — a property of its spin and charge — is twice as precise as the one physicists have used for the past 14 years. by MistWeaver80

Neither. The g-2 measurement is done with a muon, not an electron. Since any anomalies scale with mass squared, and the muon is 200 times heavier than an electron, that experiment is 40000 times more sensitive to new physics than this one. Doubling the electron measurement accuracy reveals nothing new.

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shiny_brine t1_j967hy2 wrote

Reply to comment by AllanfromWales1 in Pharmacological vitamin C inhibits mTOR signaling and tumor growth by degrading Rictor and inducing HMOX1 expression (Feb 2023) by basmwklz

To simplify a very complex system, there are four main uptake paths for VC (passive diffusion, facilitated diffusion, active transport and recycling through the kidneys). Difference subsystems (brain, lungs, heart, muscles etc.) can each tolerate different levels of vitamin C and regulate levels through the use of different uptake paths. These levels are lower than the levels discussed in the paper obtained through intravenous means. If the body were exposed to long term high levels as discussed in the paper, there would be concerns of damage to many of the systems that need to regulate much lower levels. If one where to ingest large doses it would mostly go through the recycle system and be removed by the kidneys before it would get to the sub-systems.

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SorsOG t1_j966xc1 wrote

Reply to Scientists have figured out a way to engineer wood to trap carbon dioxide through a potentially scalable, energy-efficient process that also makes the material stronger for use in construction by giuliomagnifico

As much as we can hope this will be viable in the future, we also don't know what long term effects trapped CO2 could have on wood. It could make it deteriorate faster than anticipated for all we know. Or even how long the trapped CO2 will stay trapped to keep it strong.

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TopTierTuna t1_j966vc4 wrote

Reply to comment by ecksate in Scientists have figured out a way to engineer wood to trap carbon dioxide through a potentially scalable, energy-efficient process that also makes the material stronger for use in construction by giuliomagnifico

For what it's worth, there exists a kind of cement that is carbon negative in the same way coral is. https://www.scientificamerican.com/article/cement-from-carbon-dioxide/

If you've got about an hour of time for a podcast that's better than you're expecting, here's Brent Constantz.

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0fficerCumDump t1_j966lr9 wrote

Reply to comment by Tempts in Reflexive fear responses tend to linger in people with anxiety disorders, study suggests by chrisdh79

Do you have any recommendations? I am fascinated by neurology & biological responses to these things & I am also a recovering drug addict who has suffered a great deal of extremely traumatic events due to being married to an addict. I would love to get into it & have an Audible credit in the chamber.

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thedabking123 t1_j9664jt wrote

Reply to comment by Rich_Acanthisitta_70 in Physicists nail down the most precise value yet of the electron magnetic moment. A newly measured value of an electron’s magnetic moment — a property of its spin and charge — is twice as precise as the one physicists have used for the past 14 years. by MistWeaver80

Sometimes this can unlock other knowledge that has practical applications.

Einstein’s equations were considered useless… until later on it helped unlock ultra precise GPS and other practical applications later.

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Wagamaga OP t1_j9653lz wrote

Reply to Scientists create carbon nanotubes out of plastic waste using an energy-efficient, low-cost, low-emissions process. Compared to commercial methods for carbon nanotube production that are being used right now, ours uses about 90% less energy and generates 90%-94% less carbon dioxide by Wagamaga

The amount of plastic waste produced globally has doubled over the past two decades — and plastic production is expected to triple by 2050 — with most of it ending up in landfills, incinerated or otherwise mismanaged, according to the Organization for Economic Cooperation and Development. Some estimates suggest only 5% is actually being recycled.

“Waste plastic is rarely recycled because it costs a lot of money to do all the washing, sorting and melting down of the plastics to turn it into a material that can be used by a factory,” said Kevin Wyss, a Rice graduate student and lead author on a study published in Advanced Materials that describes how he and colleagues inthe lab of chemist James Tour used their flash Joule heating technique to turn plastic into valuable carbon nanotubes and hybrid nanomaterials.

“We were able to make a hybrid carbon nanomaterial that outperformed both graphene and commercially available carbon nanotubes,” Wyss said.

https://onlinelibrary.wiley.com/doi/10.1002/adma.202209621

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