Anonymous
purifying penicillium into penicillin. 2017-08-22 01:10:55 Post No.9121322
[Report] Image search: [Google]
purifying penicillium into penicillin. 2017-08-22 01:10:55 Post No.9121322
[Report] Image search: [Google]
File: Penicilliummandarijntjes.jpg (271KB, 1920x1045px) Image search:
[Google]
271KB, 1920x1045px
purifying penicillium into penicillin.
Anonymous
2017-08-22 01:10:55
Post No. 9121322
[Report]
[View this topic]
Any microbiologists know how to purify a white penicillium culture growing in an acidic liquid environment? I am attempting to learn how to produce antibiotics in a home lab environment but I don't know where to go from here, having isolated penicillium and allowed it to grow already.
9 Posts / 3 Images
View this topic
>>
File: Screen shot 2017-08-21 at 6.43.32 PM.png (108KB, 495x720px) Image search:
[Google]
108KB, 495x720px
>>
>>9121375
can you possibly describe in more detail this process?
>>
>>9121422
I would also be interested in a nice home guide for producing penicillin. The industrial process seems fucking intense.
File: JeanFourier.jpg (296KB, 1200x820px) Image search:
[Google]
296KB, 1200x820px
If you come across an image in this thread that you don't understand, you must leave /sci/ forever
13 Posts / 9 Images
View this topic
>>
File: twowigners.jpg (65KB, 468x326px) Image search:
[Google]
65KB, 468x326px
>>
File: banach.png (454KB, 668x445px) Image search:
[Google]
454KB, 668x445px
>>
File: fourcolor.jpg (11KB, 342x282px) Image search:
[Google]
11KB, 342x282px
File: I think I'm in the computer.jpg (102KB, 638x471px) Image search:
[Google]
102KB, 638x471px
Is there any realistic threat to the digital age in our lifetime? By that I mean is there any risk to permanently losing the internet through some global mega-virus or a CME or somthing?
9 Posts / 2 Images
View this topic
>>
Anything that threatens civilization generally would threaten the Internet. Such as a big ass meteor or an ice age.
>>
>>9121273
Root DNS servers
>>
>>9121273
Nuclear war is always a possibility, no matter that it seems remote now, the weapons are still sitting there in their silos.
why is the mole considered a base SI unit?
don't tell me what they are, i already understand avogadro's number and all that shit. my problem with the unit is that it's dimensionless, it's just a number of something. a mole could easily be a mole of oranges, or a mole of elephants. it doesn't describe anything dimensionally like the other units (meter, kilogram, etc) do.
so why is it a unit, especially when we have the technology now to reliably measure atoms in accurate ways such as mass?
19 Posts / 1 Images
View this topic
>>
M O T H E R L O A D (goldium edition)
>>
A mole is just a conceptually different way of measuring something entirely than physical dimensions. It has more in common with the concept of "a dozen" or "twenty of them" than with "a meter" or "a gram".
The fact that it's so different is exactly what makes it useful, though. It describes a different concept than volume or weight.
>>
>>9121250
>is illiterate
>doesn't understand something obvious
Figures. Fuck off, illiterate retard.
File: Derivative.png (68KB, 1200x1328px) Image search:
[Google]
68KB, 1200x1328px
What's the point of analytic differentiation when you can just use numerical differentiation on basically anything without thinking about it? Shouldn't it be retired along with other outdated shit like encyclopedias or the abacus?
24 Posts / 2 Images
View this topic
>>
>>9121117
Computers are dumb. They'll analyze anything you throw at it. You have to know your input is legit.
>>
>>9121131
Nobody's asking computers to come up with your input for you, I'm talking about output i.e. solving.
>>
"What's the derivative of x^2?" "2x."
vs.
"What's the derivative of x^2?" "For which value of x?"
File: 1379874220680.jpg (44KB, 695x463px) Image search:
[Google]
44KB, 695x463px
are women less intelligent than men?
what does unbiased scientific research say?
52 Posts / 11 Images
View this topic
>>
Similar mean
less variability
>>
>>9121106
Their men is actually slightly higher. If you have to pick one person to help with something complex, and all you know is the sex of the person, you're better off picking the woman.
>>
Yes.
File: IMG_7500.jpg (121KB, 480x608px) Image search:
[Google]
121KB, 480x608px
Can you help me analyze this quote? I understand we are told that our consciousness is made possible through complex chemical reactions all throughout the brain and that the only thing that is certain in the known universe is that nothing is certain, but I do not understand the part about fighting or perishing. Does it mean fight against ignorantly believing in things which we do not understand or cannot completely prove? Or that if we truly accept that noting is certain that we will not perish(not likely)? I also found this quote in a retarded Christianity site when searching and that also makes the person who thought it was a good argument against atheism/Agnosticism a hypocrite because he cannot truly prove the existence of god.
What are you're thoughts? I know it was just a meme, but I feel value behind it and once I understand it fully I hope to have expanded my mind.
"Hypocrite that you are, that you trust the chemicals in your brain to tell you they are chemicals. All knowledge is based on that which we cannot prove. Will you fight or will you perish like a dog?"
43 Posts / 5 Images
View this topic
>>
>>9120998
it's just quack.
btw donald is right, and micky is a tattler.
>>
>>9120998
what a fucking asshole
>>
I always interpreted that as meaning that if one were to trying accept a nihilistic view of world that nothing matters, then they wouldn't bother with such basic acts as feeding themselves, breathing, and generally avoiding death. For is not the fear of death itself just chemicals?
So effectively the challenge that Micky Mouse is giving is to either truly accept his philosophy of ignorance and allow himself to die or to fight to spite the fact that it might not matter
File: emdrive.jpg (30KB, 770x440px) Image search:
[Google]
30KB, 770x440px
How does the EmDrive work?
8 Posts / 1 Images
View this topic
>>
Magnets
>>
>>9120860
It doesn't
>>
File: 69369-cb1373915625-3.jpg (2MB, 2048x1360px) Image search:
[Google]
2MB, 2048x1360px
Why don't we selectivly breed Chimpanzees for certain cognitive human traits?
Doing so would give us a greater understanding of how conciousness works and evolved.
11 Posts / 1 Images
View this topic
>>
Because we don't want to pay welfare to even more monkeys.
>>
It would take too long and be insanely expensive because chimps have such a long lifespan. There's also a sort of taboo on animal testing on chimps because they're so smart.
Anyway it would probably be faster to just use Crispr to try to get superchimps instead of mucking about for 100s of years trying to selectively breed a genius
>>
>>9120858
Because we've seen Planet of The Apes.
File: dysgraphia.jpg (20KB, 304x275px) Image search:
[Google]
20KB, 304x275px
I have always had slightly above-average abilities with a few things. I have it especially easy with Physics.
However, I have terrible handwriting. To the point that I avoid writing anything by hand.
I use a computer even to take non-important notes, especially if there is the possibility of someone reading them. I have considered the possibility of suffering from dysgraphia.
Is anyone here crippled in a similar way? Will this make my (hopefully future) career in Physics harder? Will anyone (teachers, colleagues...) have to read my handwritten work in the future?
43 Posts / 7 Images
View this topic
>>
>>9120801
>can find help for anything at colleges
>except handwriting
really makes you think
>>
Handwriting is genetic.
>>
>>9120801
Just type your work you stupid ponce. Or do what I do, write everything in all caps for maximum legibility despite having terrible writing.
File: Solo for Party Rockin.jpg (70KB, 428x420px) Image search:
[Google]
70KB, 428x420px
So /sci/, I've never taken an IQ test. Are the free ones online legit/accurate?
12 Posts / 1 Images
View this topic
>>
>>9120610
>Are the free ones online legit/accurate?
No lol
>>
>>9120610
>. Are the free ones online legit/accurate?
No
>>
Online IQ tests only exist to try to get you to buy something, like "wow your IQ is so high, buy this mail order certificate of your IQ to hang on your wall" or "you should join this genius club, only a small monthly fee"
basically they're going to say you're a genius no matter what answers you give so that they can scam you
File: macaco triste.jpg (44KB, 590x443px) Image search:
[Google]
44KB, 590x443px
How are your graduate school experience coming along?
I just got out of my first test in the master's program and that shit was hard as fuck. I feel like a fucking failure. I was being asked to prove results in under 40 minutes that would require information about other results never even mentioned in class. Are all tests extremely difficult? Should I adapt better to the graduate life?
Gimme your experiences dealing with this kind of stuff, can be stories or advices.
14 Posts / 1 Images
View this topic
>>
please talk to me, i'm so alone
>>
I wouldn't know, I got rejected by all the ones I applied to.
>>
>>9120698
Fuck. What were you going to study?
File: main-qimg-b140a92b2b932cfe9620e11958f4eb46.png (148KB, 602x339px) Image search:
[Google]
148KB, 602x339px
hey /sci/ what do you think of ideas like the Law of Attraction?
especially when it comes to altering one's reality
19 Posts / 4 Images
View this topic
>>
>>
>>9120553
this is about as real as ghosts and demons
>>
>>9120553
>Psychologists and New Ages Thinkers
Alarm bells start ringing
>You attract good or bad experiences based on your thoughts
Your mind doesn't affect reality; to think it does is absurd. Confirmatory bias may cause you to notice more of the good or bad if you think that things are going to be that way, but the same amount of food and bad experiences will still occur; only your perception of them will change.
>It's better to trust your emotions than over-think a decision
This is poor advice
File: images.duckduckgo.com.jpg (32KB, 720x720px) Image search:
[Google]
32KB, 720x720px
So a solar eclipse is when the moon is between Earth and the sun, and a lunar eclipse is when Earth is between the sun and the moon. But what is it called when the sun is between Earth and the moon? A terrestrial eclipse?
10 Posts / 2 Images
View this topic
>>
An apoca-clipse.
>>
File: jjjlol.jpg (28KB, 801x534px) Image search:
[Google]
28KB, 801x534px
>>9120435
>>
>>9120402
No, it's called the sun.
If the sun is between the earth and the moon then both the earth and the moon are inside the sun.
Distance between earth and moon = ~240,000 miles. Diameter of sun = ~800,000 miles
File: b394bc2aeff10ef0db4e342e3d1698224cf88b21e74fdb572411dfea8c6e9a97.jpg (57KB, 1000x800px) Image search:
[Google]
57KB, 1000x800px
Who else /disabled/ here? Specifically mental disability. How has it effected your ability to study and your scientific or math skills? Do you use specific services to help with studying/ Doing work?
26 Posts / 4 Images
View this topic
>>
I've got bipolar disorder. I finished a degree in CS with a decent GPA but have been a NEET ever since. Idk what I'm going to do ive been a neet for a while due to complications of the fucked up meds they keep me on but eventually I'll try to do some web dev freelancing coding or something. I probably will not be able to do it very well and will merely end up getting one of those retard jobs while cashing a disability cheque but here's to hoping.
>>
>>9120432
Anxiety. Avoidance of obstacles, fear of uncertainty. Disorgsnisation. At the cusp of NEEThood. Either go back to school or go NEET
>>
>>9120388
>frogposter
>mentally disabled
I wouldn't have expected anything less.