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Friday, February 8, 2019

Can the body naturally clean fat from arteries?

Can the body naturally clean fat from arteries?


Can the body naturally clean fat from arteries?

Posted: 08 Feb 2019 06:47 AM PST

Assuming one is fairly active and has a fairly healthy diet.

Or once the fat sets in, it's there for life?

Can the blood vessels ever reach peak condition again?

submitted by /u/Naygen
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Do we defecate our food in the order of which we ate it?

Posted: 07 Feb 2019 06:29 AM PST

For example if i ate a piece of bread after shitting, will the first thing that comes out in my next shitting be the remains of that piece of bread?

The wording is probably bad hope yall can understand all this

submitted by /u/yjlam
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when mammals develop in the womb of the mother they get their oxygen and blood flow from the mother right? so my question is where does the oxygen and blood flow come for birds and other species that develop in an egg?

Posted: 07 Feb 2019 08:38 PM PST

Antibiotic medications can give rise to antibiotic-resistant bacteria. The medicine doesn't distinguish between good and bad bacteria. Doesn't that imply that antibiotic use will result in antibiotic-resistant "good" bacteria also? More powerful gut bacteria can improve immunity.

Posted: 08 Feb 2019 06:48 AM PST

Has all the infrastructure built for mining bitcoin whose price has since collapsed led to a glut of cloud computing power and a drop in price for other uses?

Posted: 08 Feb 2019 05:28 AM PST

I apologise if this is the wrong sub. This is an interdisciplinary question so I'm not sure where to ask.

submitted by /u/JohnnyFiveFIngers
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What makes the International Space Station or any other object stay in a precise planetary orbit?

Posted: 07 Feb 2019 09:56 PM PST

It seems exceedingly unlikely for an object to have the perfect velocity to stay in a set orbit. And yet the International Space Station has been in orbit for decades. Is the ISS constantly adjusting itself to correct its velocity, or does gravity act as a self-correcting feedback loop to sustain a relatively constant orbit?

submitted by /u/1917-was-lit
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Is there a way of knowing what the geographical state would be in future of any continent or land mass?

Posted: 08 Feb 2019 03:20 AM PST

For example, countries like US and Australia have a huge desert like vegetation in many parts. What would be the future of such places? Are they gonna get drier or otherwise?

submitted by /u/asatomasadgamaya
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Quick question. Why is the graph of the boiling points for alkanes non linear?

Posted: 08 Feb 2019 02:01 AM PST

How is the speed of sound in water and its density related?

Posted: 07 Feb 2019 09:38 PM PST

Maybe a bit of a dry topic but I'm interested in the relationship between the speed of sound in water and the density of the water. I've had a good look around the internet but can't seem to find it - possibly not searching the right thing.

The end goal here is using a sound speed profile to determine how the buoyancy of an object changes as it moves vertically through the water column. And, to bound this, in conditions possibly experienced in the ocean (e.g. 0-40 deg, 1000-1030kg/m2, 0-500m).

submitted by /u/SilentKaos713
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How do amino acids from food enter cells and become proteins?

Posted: 08 Feb 2019 05:05 AM PST

I'm not asking about the translation steps, but about how amino acids actually enter the body. If we get amino acids from food, do they get broken down more and then remade? Do they just float into the cytoplasm? How does a cell "grab" a specific amino acid to use to make a protein?

submitted by /u/climatechange1ah
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Why isn't the olfactory sense processed like the other senses?

Posted: 08 Feb 2019 04:11 AM PST

All afferent sensory information has to synapse in the thalamus before reaching its respective cortical areA, but the olfactory sense does not?

Another question: Which of the senses 'came first', i would imagine olfactory receptors being the oldest as they are exclusively GPCRs.

Thanks beforehand

submitted by /u/pitroms
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What force does quantum entanglement use?

Posted: 08 Feb 2019 07:39 AM PST

As mentioned in the title, do we know what force is responsible for quantum entanglement?

submitted by /u/innaison
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How effective is the 1-10 pain scale in triaging/diagnosis?

Posted: 07 Feb 2019 10:19 AM PST

I know that this scale is useful measuring a specific pain over time, but is it of any value the first time a patient is asked?

I'm wondering because not only is pain of course subjective from person to person, but based on that individual's experience a current "5" may be completely different than a "5" last month. For example, I had a kidney stone and I can't imagine anything will ever be comparable to that pain, so I wouldn't rate current instances "against" that.

submitted by /u/sheepthechicken
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Why can’t fog form near the ground if it’s windy but clouds can form in the atmosphere where it’s much windier?

Posted: 07 Feb 2019 04:21 PM PST

If wave function collapse occurs when the wave function is observed or interacts with the 'external world,' how can we know it was in a superpositioned state before observation?

Posted: 07 Feb 2019 04:35 PM PST

If the universe is expanding, why cant we determine our position in the universe based on the speed in each direction?

Posted: 07 Feb 2019 10:36 PM PST

How did organisms evolve skeletons?

Posted: 07 Feb 2019 08:54 PM PST

I understand that at some point ( a VERY long time ago.) multicellular organisms split into invertebrates and vertebrates. However, how did something as complex as the internal skeleton (or for the sake of asking, exoskeleton) evolve? Was the exoskeleton a precursor to the internal skeleton or did they evolve independently? Was there as some point an organism with a partial skeleton?

submitted by /u/JacyVuno
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Does frequent REM sleep (or just having many vivid dreams in one night) effect quality of sleep?

Posted: 08 Feb 2019 01:29 AM PST

I used to (up until 2 years ago) often wake up many times during the night (every 3-4 hours), all after a vivid dream. I grew to love it due to me being able to enjoy being snuggled up in bed longer, but I'm curious as to whether this would have effected my quality of sleep overall? Even though I always got 8 hours of sleep or so.

submitted by /u/Pugblep
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How can we measure the no of electrons in an atom?

Posted: 08 Feb 2019 04:43 AM PST

Like I saw a post which showed latest image of DNA but it was still very clumpsy. Then how can we know things like no of electrons and bond lengths? Like before Mendeleev and now? Thanks.

submitted by /u/ashwinkafle
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Will a transplant limb work on its own DNA or adapt to the patients DNA?

Posted: 07 Feb 2019 10:11 PM PST

So if you got a hairy hand put on your right arm but your original hand was not as hairy. Or would a slightly darker natural tone eventually even out? Or will it always be obvious?

submitted by /u/chriscroc420
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How does the Monty Hall problem work?

Posted: 07 Feb 2019 07:14 PM PST

If you don't know what this refers to, look it up. My question is, why in a mathematical proof, does switching doors increase your odds? I mean if you started with three doors, picked one and now have two doors to pick from, why isn't it 50/50? Some of you might say, "Oh, but you started out with three choices." Here's the thing, let's say I give you a six sided dice. A 1/6 chance. You roll it and I switch it out for a quarter and ask you to flip. A 1/2 chance. How in any way does the quarter influence the odds of the dice or vice versa?

submitted by /u/Idiewithoutregret
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If there are red, yellow, blue, white, and "brown" stars, why arent there any other colors?

Posted: 07 Feb 2019 08:16 PM PST

More specifically, why aren't there any green stars?

submitted by /u/sassy_the_panda
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How do people go to ISS from Earth and how they return?

Posted: 08 Feb 2019 03:37 AM PST

Any video showing the process?

Also, what is the purpose of ISS?

submitted by /u/GoodProgrammer2018
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How quickly does our digestive system process fats?

Posted: 07 Feb 2019 03:40 PM PST

Basically what the title says.

I have noticed that I often have to poop half an hour after eating. I know that food isn't processed that fast, and I don't think that I eat that regularly for it to be from a few days ago.

It tends to happen mostly after a large meal, such as from a fast food joint. Is it possible that the fat is quickly going to my large intestine and rushing my next poop?

submitted by /u/-Wertoiuy-
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Thursday, February 7, 2019

How does our stomach rumble when we are hungry?

How does our stomach rumble when we are hungry?


How does our stomach rumble when we are hungry?

Posted: 06 Feb 2019 02:48 PM PST

What fills the void in the earth when we pump oil out, and are there visible structural effects on the surface? Also, has the net mass displacement to the earth's surface caused the earth's rotation rate to change?

Posted: 06 Feb 2019 03:36 PM PST

What happens if you freeze a super strong container full of water?

Posted: 06 Feb 2019 04:07 PM PST

From my understanding, water expands when it freezes, and the expansion is what causes its container to break. However, if we have a super rigid container that's strong enough to withstand the expansion force of freezing, will the water still be able to freeze?

submitted by /u/ImNotBlackGuy
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Wikipedia says element 120 might be the last element possible to synthesize with current technology. Is this true? And if so, why can’t we synthesize further elements with our current technology? What new technology would we need to synthesize heavier elements like 121, 122?

Posted: 06 Feb 2019 09:20 PM PST

I'm reading into small/medium nuclear reactors for more localized power production, but they are not common-place right now. Why is that? Regular nuclear reactors have been around for a while, does scaling the reactor down result in new technical difficulties?

Posted: 07 Feb 2019 01:28 AM PST

This was one I found from a specific company: https://www.u-battery.com/what-is-u-battery

It mentions a few times how it coats the uranium molecules in carbon to make them safer.

Other sources: http://www.world-nuclear.org/information-library/nuclear-fuel-cycle/nuclear-power-reactors/small-nuclear-power-reactors.aspx

Talk about how the reactors are smaller and simpler but not necessarily cheaper to run, and that there are other issues in the way, mainly based on societal/legislative barriers.

That same website also talks about smaller (portable) reactors that have already been used. So what are some reasons that they are not more common place now?

submitted by /u/chiron42
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How is sugar mass measured in fruits?

Posted: 06 Feb 2019 10:04 PM PST

when postmenopausal women get hot flashes, does their skin temperature increase significantly, or does the individual just perceive to to get warmer?

Posted: 06 Feb 2019 04:28 PM PST

Identifying Patient Zero. How? Why is it important?

Posted: 06 Feb 2019 03:46 PM PST

With the measles running a muck, and news stations broadcasting we found patient zero I would like to know why that's important.

submitted by /u/VapingSmooth
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Why is it so hard to build a thermonuclear weapon?

Posted: 07 Feb 2019 01:31 AM PST

I find nuclear weapons fascinating. I've been doing some reading on the subject, and I find the mix of science and... destruction interesting. I am in no way a physicist however.

The following question has reared itself: Why is it so difficult to build a thermonuclear bomb? I realize the details of the designs that are public are very vague and generalized, but still. You would think once the concepts are known, smart people would work out the kinks. Still, all countries (NK for instance) always start with simple fission weapons, maybe even never reach the thermonuclear stage.

Is the difficulty in refining and designing the actual physics of a weapon, or in the manufacture and tooling of, I assume, many exotic materials? (Of course I also realize that building such things is generally not something that is encouraged by those that know how it's done.)

submitted by /u/KillahViking
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What's the point in keeping smaller particle accelerators around after larger ones have been built?

Posted: 07 Feb 2019 12:22 AM PST

Do humans have better night vision when younger (children), older (adults) or is it equal throughout your life?

Posted: 06 Feb 2019 08:24 PM PST

How do paleontologists tell the difference between a fossilized broken bone and a fossilized bone that looks broken due to fossilization complications?

Posted: 06 Feb 2019 08:23 PM PST

Basically, how to paleontologists know a fossilized bone is broken due to an activity during the animal's life and not because part of the bone fossilized poorly?

submitted by /u/2F8F5DB8
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Can the venom of a snake or a spider harm a plant?

Posted: 06 Feb 2019 07:41 AM PST

I know that most venoms are not designed to attack plants, but which ones can? Is there a specific plant/specific venomous animal or bug that can harm a plant?

submitted by /u/LoganAugustus
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How did scientists discovered the different internal layers of Earth, their components and depth?

Posted: 06 Feb 2019 08:57 AM PST

How do viruses target specific cells within the body?

Posted: 06 Feb 2019 06:05 PM PST

When did animals evolve wings?

Posted: 06 Feb 2019 05:59 PM PST

When did animals first begin to take flight? And how did they go about the process? Like when was the first bug like, Imma jump and it'll work itself out!

submitted by /u/trenzalor_1810
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Does Earth move with constant velocity?

Posted: 06 Feb 2019 06:55 PM PST

Does Earth experience acceleration or deacceleration?

submitted by /u/Same_Switch
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Why does the spectral series for hydrogen apply to atomic hydrogen when the material being excited in the tube is hydrogen gas (H2)?

Posted: 06 Feb 2019 01:29 PM PST

Why do different liquids freeze/boil at different temperatures than other? (I.E gasoline and antifreeze need to be at a lower temperature to freeze than water)

Posted: 06 Feb 2019 08:46 PM PST

How is the anatomy or structure of an organism encoded in its genes?

Posted: 06 Feb 2019 11:28 PM PST

Why do we still need vaccines against measles, but not against smallpox?

Posted: 06 Feb 2019 11:51 AM PST

Before anything, I want to make clear I am not an anti-vaxxer, by no means. I'm simply curious about the difference between both pathogens. Smallpox was eradicated in en 1970s after a global campaign and and people don't need to be vaccinated any longer. Measels seems to have been basically eradicated until now, due to anti-vaxxers. How is that possible?

submitted by /u/maxitobonito
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Does our body have a way of storing excess protein like it does with excess fat?

Posted: 06 Feb 2019 10:33 AM PST

There are adipocytes, but apparently there are no 'proteinocytes'. I would think that storing protein is a big evolutionary advantage, so does our body do that? And if no, why not?

submitted by /u/neuromat0n
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How do we know who exactly is "patient zero"?

Posted: 06 Feb 2019 11:02 PM PST

Wednesday, February 6, 2019

I saw a picture of a single atom. What is in the "empty" space between the camera and the atom?

I saw a picture of a single atom. What is in the "empty" space between the camera and the atom?


I saw a picture of a single atom. What is in the "empty" space between the camera and the atom?

Posted: 05 Feb 2019 08:02 PM PST

Do people have varying levels of Ph in their stomach acids? If so, how large of a difference is there? Thank you

Posted: 06 Feb 2019 04:42 AM PST

Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science

Posted: 06 Feb 2019 07:11 AM PST

Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary Science

Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...".

Asking Questions:

Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions.

The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists.

Answering Questions:

Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience.

If you would like to become a member of the AskScience panel, please refer to the information provided here.

Past AskAnythingWednesday posts can be found here.

Ask away!

submitted by /u/AutoModerator
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Once a freshwater body of water begins to freeze, assuming it is below freezing, does it freeze at a constant rate until all water is frozen or does it plateau and require colder temperatures for ice to continue to grow thicker?

Posted: 05 Feb 2019 09:18 PM PST

What is your body doing when you're panting after an all-out sprint?

Posted: 05 Feb 2019 08:22 PM PST

Basically I am curious why anaerobic efforts require so much oxygen (even after you stop doing them).

submitted by /u/improbable_humanoid
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Why do fabrics get darker when water is poured on them?

Posted: 05 Feb 2019 07:19 PM PST

When is the next major volcanic eruption expected to happen?

Posted: 05 Feb 2019 09:34 PM PST

Why does water not make a good lubricant?

Posted: 05 Feb 2019 05:04 PM PST

What is the difference between torque and moment?

Posted: 05 Feb 2019 07:19 PM PST

Based on the equation and googling I could postulate that the main difference is that torque has a perspective of the angle the object actually rotated (hence the sine theta) but couldn't be certain.

submitted by /u/Angelr91
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Do lymph nodes on either side of the body protect that section or is it just an all over system?

Posted: 05 Feb 2019 07:40 PM PST

Would right sided problems cause that side to be larger and vice versa or do both sides work in unison.

submitted by /u/A_Creepy_Snail
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Have any studies been done on the mental impact of removal of the intestines?

Posted: 05 Feb 2019 07:48 AM PST

Specifically the large, though I'd be interested in learning about the mental effects of having bits of the small removed too.

This isn't about depression caused by having major life-changing surgery, I'm specifically curious about the impact the lack of a gut biome has on your mood. The gut is often called a 'second brain' and I've heard it said that it majorly affects your mood and state of mind.

How does your state of mind fare without a gut?

submitted by /u/beleaguered_penguin
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How does the water supply stay sterile after leaving the treatment plant?

Posted: 05 Feb 2019 03:22 PM PST

Over time wouldn't the pipes supplying my water build up bacteria inside the pipes? how does the water supply, after it's left the treatment center, stay sterile and clean for consumption? i live in a city where there's no apparent issue with drinking water from the tap but if i don't filter my drinking water, am i inadvertently consuming tons of bacteria by drinking it straight from the tap?

Understanding when i wash my hands/take a shower i'm shedding dirt and debris, my drain can get pretty gnarly after a few weeks of not cleaning it, so it makes me sick thinking when the last time the pipe coming to my faucet was cleaned, if ever.

submitted by /u/Stuff1989
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How (and to what degree) are researchers able to reconstruct changes in a particular species' range over time, especially during the past few centuries (as opposed to prehistoric timeframes)?

Posted: 05 Feb 2019 05:44 PM PST

It seems to me like this would quickly become interdisciplinary, drawing insight from geography, genetics, ecology, and even written records. Is there a name for this kind of work (historical biogeography)? Is there accessible data out there for those who are interested in understanding these changes in their local regions?

submitted by /u/Shirebourn
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What is the logic behind the derivation of the standard deviation and what does the standard deviation mean?

Posted: 05 Feb 2019 02:51 PM PST

I understand what the standard deviation is, and how the standard deviation can be calculated, but I'm lost as to how it could have possibly been derived in the first place. It makes sense to me that you can't use the average of the differences from the mean of data points because the sum of the differences equals to zero. And I get that you have to square root the square for the units to have any meaning. But who came up with the idea of the squaring the differences in the first place, and does the standard deviation mean "The average difference between a datapoint and the mean of the datapoints"?

submitted by /u/Bldyknuckles
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What is the significance of herquline molecules in cancer research?

Posted: 05 Feb 2019 03:03 PM PST

One of the head research labs at my University just published a journal stating that they synthesized Herquline and different conformations of it. What is the significance of this molecule?

Is the molecule important in and of itself, or does researching this specific molecule help us understand a bigger picture?

submitted by /u/whitest_asian
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Do animals understand the changing of the seasons?

Posted: 05 Feb 2019 03:03 PM PST

I understand that cats and dogs understand routines, but when summer gives way to winter, and they poke their nose outside and see endless snow and feel the bitter cold where warm sun and grass once was, do they get what's going on or does this confuse them until they get used to it and it justbecomes normal until the next change?

submitted by /u/ancienterevil
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Why do you have memory loss when you get a concussion?

Posted: 05 Feb 2019 12:11 PM PST

My mom fell and hit her head earlier, and she can't remember anything from earlier in the day.

submitted by /u/Abolton12
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What are the current realistic theories/explanations for the Bootes Void?

Posted: 05 Feb 2019 01:08 PM PST

Does the gradual movement of the Magnetic North Pole alter climate in any way?

Posted: 05 Feb 2019 07:52 AM PST

Mathematically, do quantum computers handle infinity differently than classical computers?

Posted: 05 Feb 2019 07:54 PM PST

How is epilepsy “triggered” by certain things?

Posted: 05 Feb 2019 10:38 AM PST

Why do tires deflate with cold air despite the temperature outside of the tire dropping as well?

Posted: 05 Feb 2019 09:20 AM PST

This is something that has always confused me. I understand that temperature is, in simpler terms, the rate at which molecules hit off of one another, which would mean that in turn at a lower temperature the molecules would be moving less which means that there would be less molecules colliding with the inside of the tire per unit of time. This means less pressure. However, the tire is not a isolated system. There is the atmospheric pressure that is what is pushing on the outside of the tire as well. If the temperature changes the same both inside and outside of the tire, shouldn't the decrease in the number of molecules inside and outside of the tire make the change in pressure the same on both sides equaling a net zero change in tire pressure? Plz send help.

submitted by /u/Sgt_CoCopuffs
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