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Archived threads in /sci/ - Science & Math - 703. page

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Lactose is a B-1,4 disaccharide. Many people lack the lactase enzyme to break it down into glucose and galctose, and are therefore lactose intolerant. To address this, there exist tablets containing the enzyme that can be taken after ingesting lactose/foods containing it. It breaks down normally and all is well.
Cellulose is a long B-1,4 polysaccharide. No human produces the enzymes to break it down to useable sugars. Why not create a gel-coated tablet that passes through the stomach and allows humans to digest it?
If we could digest cellulose, nearly any soft vegetation would be a source of nutrients. I'm sure I'm being retarded somehow, but what am I missing?
Pic related
21 posts and 1 images submitted.
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So poor people could eat grass? Would the production of the enzyme be cost effective? Grain already is cheap.
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It's not as simple as that, lactose is a tiny molecule by comparison to cellulose; 2 sugar units compared to several hundred.
Breaking down cellulose into individual monomers is a pain in the arse of a process, under body temperature conditions it takes quite a long time to fully digest.
This is why cows have multi-chambered stomachs and rabbits eat their own shit.

Even if you did consume the right enzymes, your intestines would get clogged with hardly-digested plant matter very quickly.
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>>8773752
So you're saying it would work if you would also eat your own shit?

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Will mankind ever develop the technology to terraform Texas and make it fit for human habitation?
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>>8773592
Global warming will turn it into desert.

~source: brainlet
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>>8773592
You have to get around the indigenous life-forms which will spray belt-fed armor piercing death in your general direction
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>>8773592
no
source: texan

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>I study
>consistently for 6 years stay in >80th percentile in school
>got IQ 122 on mensa IQ and 118 on iqtest.dk, for some reason the stanford-binet IQ test I keep hitting 135-137.
I'm starting college under a pre-med course, gotta max my gpa to get into medical school and MCAT. Am I going based on the above? Assuming I work really hard from now on.
15 posts and 1 images submitted.
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>>8773590
Y
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>>8773590
Average medical is 115 so you don't need to work as hard as the others.
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>>8773590
fuck off to >>>/adv/
stop posting this shit thread here nobody gives a fuck

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how do you deal with the fact that nothing means anything but everything costs something?

>ones that cant comprehend the harshness of this fact do not need to apply
19 posts and 3 images submitted.
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false dichotomy, nature doesn't waste anything, from the smallest dead gerbil to a blackhole.

>brainlets don't understand symmetry
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>>8773504
nah wrong approach
>>
>>8773500

First I start by waking up. Then I focus on things that I find relevant that day. After I go to bed.

Repeat.

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Was it autism?
11 posts and 6 images submitted.
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*blocks your M-theoretic path*
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who dis?
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>>8773265
he keeps his second brain in the chin

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Ok so I have looked heavily in liquid fluoride thorium ractors and i have yet really to see a down side. can someone here point out something my overly hopeful mind is glossing over?

also why the fuck arent we making these yet?!
25 posts and 2 images submitted.
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>>8773079
>looked heavily into liquid fluoride thorium reactors
forgive my downs syndrome
>>
i cant answer your question but maybe you can answer mine.

what makes you think this warrants your attention?
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>>8773091
do you mean to ask why im interested in these things?

This course just started today. Anyone else gonna work through it?

https://www.edx.org/course/nuclear-reactor-physics-basics-mephix-mephi005x
12 posts and 2 images submitted.
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>nuclear physics taught by a Russian
based
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>>8772830
>neutron sources
>light nuclei
>no liquid PbBi spallation target
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>>8772830
Nuclear science is dead.

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Why is this idiot pushing for battery-fueled E-cars, instead of hydrogen fueled E-cars?
46 posts and 3 images submitted.
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>>8771966
hydrogen = expensive engine + inefficient transport of fuel

-no big profit margin atm
case closed
>>
Where have you been for the last 5 years anon?
Hydrogen is ded, battery won.
>>
dude, simulation, man.

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NEIL DEGRASSE TYSON CAUGHT PLAGIARIZING
21 posts and 5 images submitted.
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>>8771913
Typical nigger tendency towards theft
>>
>religitards trying to imply atheism is a religion again
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>>8772040
Typical RUSSIAN SHILL tendency towards SHILLING FOR RUSSIA

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Embarrassing uni stories thread?
Today I went to one of a lecturer's office in the cs dept that I've never seen in my life but passed his class. Unfortunately I forgot to register it in this year's classes so I had to sort things out with him. I knew his name so in the cs dept I asked a young guy outside some offices whether he knew where Mr X was. He was in front of me. That ought to be my most embarrassing uni story.
23 posts and 3 images submitted.
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>>8771611
that's all?

one time i spoke with a lecturer and when i got up from my chair i noticed i left a huge ass sweat mark on it, i looked at it for half a second and I must've had a surprised look on my face something like "oh, wow, interesting" because the lecturer then immediately looked at what I was looking and noticed the ass sweat too. He stared at it for a fraction of a second but had a look on his face that expressed disgust and contempt.
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>>8771611
I always leave ass sweats on chairs and people notice all the time

i like to think that they analyze me and try to mentally insult me and critique me. I bet they're all like "man living life as an autist must be hard, that guy is laughable, leaving ass sweats everywhere, he is full of anxiety and depression, his ass sweats will be the only thing left of him in this world after he dies. A truly pathetic autist, he has no future."
>>
a few weeks ago I was so fucking tired that I really had to take a stimulant, I had to have some coffee but fuck paying 1.2 pounds for a shitty espresso from Nero, I went to the supermarket and bought a small bag of Lavazza, for 3.75 pounds, the best shit there is, and I went to a uni bathroom and just ate some coffee

eating it makes you absorb 100% of its caffeine

other methods of preparing coffee are not as efficient

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Why don't more fields work towards organizing all of their knowledge into a tree of categories and concepts? Literally this is the best way (for me at least) to learn everything. It's all scattered throughout random incomplete textbooks, scientific papers, things like this.

I want a tree of all categories and sub-categories of related concepts, from high level down to very low level, for things like all topics. Such as math, CS, physics, EE, things like this. But I can't find them. Has nobody made any of these? You can find some for little things but they're never complete

Can knowledge just not be arranged like this or is humanity lazy?

Someone should calculate one based on wikipedia references or something, but even that isn't good since articles and sections aren't organized very well. Idk
34 posts and 2 images submitted.
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it is called a table of contents to a book
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>>8770765
Yes but I'm talking about one for all of human knowledge that you can zoom in on like Google Earth
>>
>Can knowledge just not be arranged like this
This.
Any tree of knowledge can be formally encoded into ZFC set theory (with sets as nodes and membership as arrows), and as with any formal system, set theory is known to be incomplete qua Godel (and Tarski).

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>at one point was taking high level calculus courses
>now nothing I do day to day really challenges me mentally the way tackling new calculus concepts did

How do you go back, /sci/? It's been years
12 posts and 4 images submitted.
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>go find a book about something you know nothing about
wow that was hard
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>>8770004

If you need a new challenge, you can try biology
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>>8770009
So I just grab a random book from a subject I don't know anything about? For what purpose, though? At least before I was building upon years of understanding.
>>8770012
Biology always interested me, especially plant life.
Where to begin, though?

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What would happen if P=PN?
55 posts and 3 images submitted.
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It would mean that an artist and a picky fucker are equivalent.

Also, all encryption would be useless.
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>>8769618
>Also, all encryption would be useless.
this
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>>8769611
If P = NP, then N = 1.

Looking for a non-meme answer
63 posts and 8 images submitted.
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>>8768277
depend
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>>8768277
>Is showering daily bad for your health?
The question should be: is stripping grease and bacteria from your skin with aggressive chemicals good for your health?

I try not to use shampoo often.
I do not use antiperspirants.
I carefully wash my armpits with hand soap though.
I don't use shaving foam, I shave after a shower.

I don't stink and I don't look dirty.
>>
>>8768277
Why do we shower? Why do people say to shower everyday? Why do you use soap to wash your body? Why do you use shampoo?

Is shampoo and soap necessary?

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>Einstein showed that gravity was not actually a force but merely a result of curvature in spacetime caused by objects with mass

>modern physicists still call gravity a force ad are looking for a force carrying particle for gravity expecting it to somehow play along with the other forces

>Einstein showed that space and time are one and the same, a single static, 4 dimensional, non-euclidean space.

>modern physicists still ascertain that time is somehow temporal and not an illusion

>all of Einstein's equations have been tested through and through nd have been shown to be correct

why do we take modern science seriously again?
70 posts and 1 images submitted.
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>>8767734
>curvature in spacetime

gravity causes gravity, wow brilliant
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>>8767747
mass causes curvature which causes "gravity"
>>
>>8767753
>which causes "gravity"
>which IS "gravity"

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