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Archived threads in /sci/ - Science & Math - 459. page


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I'm just curious- The idea came to me this morning when I saw the 3D rendering of an ethane molecule. I couldn't find anythink on the internet so, yeah, what does /sci/ think?
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dem bond angles
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>>7781378
Switch up a few atoms and that could make for the most ovr'pwr'd thin ass battery seen to man

Patent it quickly OP
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>>7781378
The helium atoms would never be close enough together to form bonds like that. Instead it would be two carbon-central tetrahedrons touching tips.

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If I were to have a putative gene sequence, how would I determine its protein and likely function by laboratory techniques?

Here's what I'm currently thinking:
>Isolate the specific gene of interest
>Amplify the DNA sequence
>Insert into vector and transform into an organism
>Isolate the expressed recombinant protein
>Isolate the proteins by size & MW (SDS-PAGE then MW Chromatography?)
>Determine AA sequence of protein by Western blot (?)
>DNA Microarray to determine localisation & expression of that gene sequence
>Then finally gene knockout in a species to observe function & functional gene
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how about:
>wait until college
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Use a computer to look for open reading frames.
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>>7781370
it would be easiest to order the gene from a synthetic lab, and place a terminal 6x his tag (or any sort of affinity tag, but with a proteolytic sequence in between to cleave tag after all is said and done). then express in organism, purify via nickel column, cleave tag, then characterize protein

So /sci/ What are your opinions on a fully conscious Artificial Intelligence one that is aware it is a program and that can learn and think by its self , How far off are we from code and machines that can actually do that?
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>>7781321
>russel/norvig.jpg
now fuck off
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>>7781321
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>>7781333
>>7781334
I swear to god, the second edition had such an awesome cover. The 3rd edition cover triggers me every time, like a book for children with special needs.

/sci/ What would you do if one day you woke up and someone had disproved all scientific and mathematics : knowledge theorem formula we have been building for the past 2016 years.I know it would never happen but what if.
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>>7781283
I'd start reading Euclid's Elements.
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>>7781297
What if all that was wrong.
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>>7781283
>>7781283
Dude what would you do if one day you woke up and someone had put a bomb in your house and it blew up one second later and you died?

I know it would never happen but what if lol xD

Why beans?
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>>7781267
because Viharts has a tasty pussy.
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>>7781267
Why [math] not [/math] beans
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>>7781267

"In this world, head winds are far more prevalent than winds from astern (that is, if you never violate the Pythagorean maxim)."

-Melville, "Moby Dick"

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Hey /sci/, I'm doing a project in numerical analysis, basically I need to implement a couple of iterative algorithms for numerical equation solving and calculate the convergence rate for those iterations.
Anyway, I'll be doing that in Mathematica, but I've never used Mathematica before. The deadline is closing in and I haven't even started yet (was too busy watching chinese cartoons and ricing my linux desktop).
Any tips on how I can do this as fast as possible? What's the quickest way to learn Mathematica? (I have experience in programming in C)
5 posts and 1 images submitted.
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>>7781253
Make heavy use of the documentation. It has very extensive descriptions of every built-in function, down to the appropriate syntax.
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>>7781253
Have you ever used wolfram alpha?

Because that's Mathematica with an input interpreter.

It's pretty simple, and Wolfram has tons of documentation and tutorials for it.
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>>7781253
>Mathematica

Use Matlab

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Help a beta out, pic related
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lmao this is like preschool math
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Kek, you have crippling autism if you can't solve this
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ok kid google something called
special triangle
kek

>tfw like the smell of ammonia
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Your face is not ammonia you fucking liar
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then you'll love trimethylamine! huff that shit in I dare you
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It was used as a stimulant in the old days as released by "smelling salts". Too much ammonia will burn your nose and lungs, but it's not very toxic and your body makes plenty of it anyway (smell your pee.)

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Do I need a laptop for physics studies and if so, how powerful should it be?
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Yes and any laptop will do.
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>>7781122
Will there be any serious work on it, like simulations or similar?
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As long as it can run KSP you'll be fine.

Hey /sci/
I'm 26 with no college education.

Is there any hope for me in the STEM field? Currently doing commercial pest control and I'm the only one in my Branch that actually reads the labels, I also enjoy solving problems through research and study. My managers actually praise me for knowing most of the active ingredients in the products we use.

tl;dr: how do I make a living solving problems and researching?
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Start studying and get a job in engineering or a research field that you like. Maybe chemistry? You don't know if there's hope until you've tried.
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>>7781109
seen this thread a bunch. heres what you are going to get out of it:

1. consider that enrolling in a STEM field means your 26 year old ass will be up against 18-19 year olds that are smart enough and motivated enough the first time around.
2. sci/fags are going to have no sympathy and probably be irritated by your question. you will either get but hurt or realize they have good reason to behave that way.

dont appeal to sympathy to argue that your the right guy to pursue stem. hopefully other people in this thread will be gracious enough to give you good advice.
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>>7781117
Thanks! I have gotten on the renewable energy bandwagon, been looking for entry level work in my locale. After several years of thinking about what I wanted to do in life, researching and advancing the energy sector seemed like a good fit. I assume it's a field where I wouldn't have to explain things to people and convince the unknowing to accomplish a goal.

Don't get me wrong, I love talking to people, and explaining things that I confidently know to those that don't, but even in my current industry, it is a surprisingly daunting task to get people to change a cultural tick or habit in order to prevent pests, so I'm trying to stay away from an area where doing that is part of my job.

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>new study shows
>scientists say
>research indicates
>the lord says

What are some more prefixes which make people believe anything you tell them? And is there any way we can make people less susceptible to this format of misinformation or misinformation in general.
4 posts and 1 images submitted.
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You need to defeat anti intellectualism. People need to understand their education is important and not reject it while simultaneously putting faith in people who claim to have done the work.

Remember, there are people who literally think science is a belief system.
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>>7781000
>while simultaneously putting faith in people who claim to have done the work.
No man can be an expert on everything. Society was created so people could specialize in a niche. People in general need to differ to specialists and be able to trust what they say is true with out being a specialist themselves. Without this society will collapse. The problem is anyone can claim to be a specialist and if everyone is it would take too long to vet everyone.

>belief system.
Science is a believe system only in that it requires faith. Faith that specialists are correct, telling the truth, and are specialists.
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>>7780995
People responses to these phrases is Pavlovian. They've heard it a million times with things that were true so they assume every time they hear the words what follows is true, classic Pavlovian.

If 4chan made a popular meme demonstrating falsehood or ignorance following those words would it counteract the Pavlovian response, or would it remain creating a double think in people's minds?

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Hi, everyone of /sci/. Today I want to Talk about a question that intrigued me for a long time: what type of civilization will the humanity become? Or we will annihilate in the process because of war? If you don't know what I'm talking about of the types of civilizations let me explain. There're three types of civilizations:

Type I: A civilization that can use all the energy in his own planet. This kind of civilization knows all the species of his native planet and has the enough tecnology to terraform a planet like Mars or Venus and they can explore more the planets on his solar system. Some people estimate that the humanity will arrive at this type in 150-200 years.

Type II: A civilization that can use the energy of his own sun. This kind of civilization would explore all the planets in his solar system and they should know everything about. Think about that. They should have the tecnology to travel to travel to other stars oand planets. Imagine all the planets of the Solar System colonized.

Type III: this type of civilization can use all the energy of a galaxy. This kind of civilization should colonize other galaxy. We can define this cilivization as gods. This civilization knows everything about energy and his propieties. What do you think? Looking for your personal opinion.
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JUST

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The representation of lasers in popular culture, and especially in science fiction and action films, is very often misleading, if not downright wrong. Some examples?
Unlike in air, a laser beam would not be visible to the naked eye in the near-vacuum of space, because there is not sufficient matter in space to produce the light scattering needed to actually see the beam. Blaster strikes from the Tie Fighters in Star Wars? They'd be invisible.
Science fiction films also often depict lasers moving at only a few metres/second, in a manner reminiscent of conventional tracer ammunition. But a laser is electromagnetic radiation - it travels at the speed of light.
Action movies e.g. Mission Impossible, often depict laser-based security systems whose beams can be illuminated with dust or powder and cleverly defeated with a combination of mirrors. Such security systems almost never use visible lasers, and putting enough dust in the air to make the beam visible would probably trigger the alarm anyway.
In the 1964 film Goldfinger, Bond faces a hot laser beam approaching his groin, inch-by-inch melting the solid gold table to which he is strapped. Goldfinger's director, Guy Hamilton, found that a real laser beam would not show up on camera, so it was inserted after filming as an optical effect. The table was also precut and then coated with gold paint, and the faux-laser melting effect was achieved by a man sitting below the table armed with an oxyacetylene torch.
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>>7780893
We know, it is called science FICTION for a reason. /thread

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If you are not in the top 50 you can't even claim to achieve something in life.
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>>7780793

>takes university rankings seriously

That's evidence that you'll never achieve something in life.
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>>7780796
this desu.

>None of the reviewed criteria for international ranking seems to have very good construct validity for both educational and research excellence, and most don't have very good construct validity even for just one of these two aspects of excellence. Measurement error for many items is also considerable or is not possible to determine due to lack of publication of the relevant data and methodology details. The concordance between the 2006 rankings by Shanghai and Times is modest at best, with only 133 universities shared in their top 200 lists. The examination of the existing international ranking systems suggests that generic challenges include adjustment for institutional size, definition of institutions, implications of average measurements of excellence versus measurements of extremes, adjustments for scientific field, time frame of measurement and allocation of credit for excellence.

(source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2174504/)
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>>7780793
>takes rankings seriously
>thinks he's going to make it

Bruh, I got something to tell you...

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So scientists have now confirmed finding gravitational waves that bend space and time, thereby proving the last of Einsteins theories right. In addition to finding a protein which could be responsible for unicellular organisms evolving to become multicellular.

Best Science Week ever?
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>>7780592
trollscience.com/2016/01/gravitation-waves-found-100%-for-sure
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>>7780555
>thereby proving the last of Einsteins theories right.

desu the indirect measurement from 2004 was proof enough for me.

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