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/sci/ - Science, Technology, Engineering, and Mathematics

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Anti-Aging Anonymous 14/07/31(Thu)06:00 No. 15779 ID: 800849 [Reply]
15779

File 140677920234.jpg - (370.63KB , 850x565 , iStock_000010280186Small.jpg )

Can we get a thread on anti-aging and lengthening lifespans?

Any possibilities, and problems with those possibilities. And ways to get around said problems. And more problems. And repeat. Until we get to even a slightly plausible solution.

Then, maybe somebody like Qin Shi Huang will say, "Hey, maybe if we try to make this better, it will work in a few thousand years!"

First time on /sci/, so bear with me.
Anyway's, lets go?


23 posts and 2 images omitted. Click Reply to view.
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Anonymous 15/09/07(Mon)00:17 No. 16189 ID: c2c43a

>>15844
Okay, so cells that can replentish their own telomeres is a problem.
Is there a way to utilize viruses as a method of introducing a set number of new telomeres to cells? If someone had weekly injections of telomere transporters that affected, say, 10M random cells in the body, then wouldn't this avoid the cancer hell path and still give the genome some padding for splits?


>>
Nazi Icktor 15/12/08(Tue)04:06 No. 16261 ID: 6db675

>>15779
It can not be done without good belief in Jesus Christ. Certainly be a Christian if you want to live a long life.


>>
Lengthened Lifespan Artemis 16/02/09(Tue)18:28 No. 16278 ID: fd4497

The trick to lengthening human lifespan lies within the active regeneration chemical that lies within blood.

The younger the person, the more of the chemical exists within the person.

Currently, the only way to gain access to this chemical's beneficial properties in order to apply it's use to lengthen lifespans is to receive repeated blood transfusions from someone 10 or over years younger than the subject that has a compatible blood type.

Of course this is subject to the chance of rejection.

Other than this, research is currently underway to try to recreate this chemical in a lab environment.

If this is not possible, blood transfusions may be the only way.

Of course this explains the myth of vampires, so enjoy this new knowledge that has in fact been kept secret for a long long time.




Beginners questions about relays and what not Anonymous 16/01/22(Fri)20:33 No. 16271 ID: 2ff71e [Reply]
16271

File 14534912089.jpg - (154.50KB , 291x640 , relay.jpg )

I'm currently building a switch cabinet or whatever it's called, its supposed to operate a servo motor and an asynchron motor. One of the tasks is to use a relay for the emergency stop, and it's supposed to be wired so that the ES has an NO and an NC switch. When ES is pushed, the relay will lose contact with the contactors. I kinda get that part, but why not just have two NC switches hooked up to the contactors? What exactly is the point of messing around with the relay?

Also, if i could get a quick word on how the wiring described on this relay (Jokab rt9) works, i'd be more than thankful. I assume i just hook it up the way it's described, but i don't fully understand the logic behind it. Seems more reasonable to me to just go with 2 NC switches and skip the relay altogether.




Anonymous 15/10/03(Sat)18:24 No. 16205 ID: cd3867 [Reply]
16205

File 144388947844.jpg - (92.78KB , 950x534 , ljud.jpg )

This might seem like an idiotic question, but i'd like to find out the science behind sounds and what not. Such as in music.
For example, if a catchy tune could be broken down into numbers, i would like to know how.
I also know that if it was that easy, people would already be doing it.

To be perfectly honest, i know nothing about the subject, but i have to start somewhere.
So my very first step is asking you guys.
I will learn more in time of course. This was just the first place i thought of asking, because i assume you won't get angry at me.


7 posts omitted. Click Reply to view.
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Anonymous 15/11/21(Sat)08:53 No. 16249 ID: 6a8cdf

>>16210
hmm.
good questions. well, when something is distorted, for this example we'll use a distortion effect on an electric guitar or something, the effect adds harmonic and inharmonic overtones or partials [so, more frequencies, more complexity to the actual sound wave] to the signal, and may alter the main harmonics, which creates a different timbre [or.. texture, sort of how it sounds].

urm..
OH, got it. check this out --> https://www.coursera.org/course/digitalsounddesign

take that course, it'll teach you a lot.

look into acoustics if you wanna know about sound waves and how they work and how they bounce around.

look into human psychology, auditory processing, and psychoacoustics if you wanna know about how sound works with our brains and why we like certain sounds and dislike other sounds.

look into sound design if you wanna learn how to create sounds yourself.

Message too long. Click here to view the full text.


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Anonymous 15/12/06(Sun)07:54 No. 16252 ID: 2d7f4c

Google psycoacoustics


>>
Anonymous 15/12/13(Sun)14:10 No. 16263 ID: 53fc09

>>16205
Hey op, this delves into the field of psycho-acoustics.
also http://www.mp3-tech.org/programmer/docs/LA_report_53.pdf




Conservation of Angular Momentum Anonymous 15/12/06(Sun)08:36 No. 16253 ID: 237410 [Reply]
16253

File 144938739318.jpg - (82.23KB , 484x230 , 06566.jpg )

How do i find a new speed of two objects that are spinning on top of a merry-go-round? If both objects are on a merry-go-round (on the edge) at a certain speed in meters per second, and one object decides to move to the center of the merry-go-round whilst still spinning. What would be the new speed, with a given radius of the merry-go-round of course. I know I have to use the angular momentum and the momentum formulas. Is there any other formulas that i should considered?

By the way--those two objects are humans, all i know is that the speed would definitely increase.


>>
Anonymous 15/12/06(Sun)17:45 No. 16256 ID: ef0164

You've confused yourself already, you're not looking at momentum you're looking at speed.

Find you angular speed: w=v/r
This is a constant and won't change unless the merry-go-round speeds up/slows down.

You've got w you've got your new radius, if you can't figure the rest you've got problems.




Anonymous 15/10/30(Fri)09:01 No. 16232 ID: 7bbbb5 [Reply]
16232

File 144619206753.jpg - (1.44MB , 3264x2448 , image.jpg )

What do you think of the mini-golf corse I designed for an engineering class?


>>
Anonymous 15/10/30(Fri)14:17 No. 16233 ID: eb1f25

It's more like fiddling during boredom class.




Anonymous 15/10/21(Wed)18:11 No. 16221 ID: 2b963d [Reply]
16221

File 144544389193.jpg - (65.22KB , 384x640 , 2aeb1f894e2728fa0f75fd6615651a33_screen_384x640.jpg )

You can create a human-level intelligence robot by copying the human nervous system. You can do this either by using a radioactive dye that specifically adheres to neurons, or by injecting the human body with nanites (micromachines) which attach themselves to the neurons without harming the subject and report the location and orientation of the neurons. My idea for actually creating the robot is using a gel for material that melts when heated, then heating it and spraying it with synthetic neuron nanites which swim to their needed positions. You can synthesize simpler versions of neurotransmitters that work with the neuronal nanites to imitate the chemical aspect of the human brain.

If you create nanites that can harmlessly adhere to neurons, this opens the possibility of direct-brain interfaces and stimulation. You can also copy the brain alone to create a computer, just be sure to train the brain of the subject in advance by putting them in a sensory isolation tank/chamber where they have nothing to do except interface with a computer and perform the tasks given to them as a computer would.

I will post again in this thread detailing my up-to-date idea for a superrobot/mecha and my idea for immortality.


10 posts omitted. Click Reply to view.
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Anonymous 15/11/03(Tue)07:34 No. 16235 ID: 5957ad

>>16231
>They're the only ones who could enforce regulation.
Why? What makes this particular service different from, say, cash registers?

>But I bet they'd be the first ones to jump on my train so it still wouldn't be a problem.
Do you really think anyone would put their brains in the hands of an unregulated service?


>>
Anonymous 15/11/04(Wed)00:37 No. 16236 ID: ca3ceb

>>16235
>What makes this particular service different from, say, cash registers?

lolwut

>Do you really think anyone would put their brains in the hands of an unregulated service?

Fuck yeah they would that's all politicians and the wealthy want. Like I said. Instant labor force.




Anonymous 15/10/13(Tue)10:01 No. 16217 ID: e10895 [Reply]
16217

File 144472330285.jpg - (96.06KB , 960x720 , 12002293_700774323400399_6074451014265061681_n.jpg )

Is it possible for there to be higher dimensions?
Do you think that we have higher dimensions?


>>
Anonymous 15/10/13(Tue)17:39 No. 16218 ID: 989472

If by "higher," you mean 4th, 5th, etc., then yes, of course.

We don't "have" them, but they are possible.


>>
Anonymous 15/10/14(Wed)02:21 No. 16219 ID: ca3ceb

Yeah pretty much that.
Thread over.


>>
Anonymous 15/10/14(Wed)05:44 No. 16220 ID: d0a46d

YOU'RE NOT ALLOWED TO PUBLISH PICTURES OF BURNINGMAN /THREAD




Electrolysis and Renewable Energy Mfats 15/10/07(Wed)09:54 No. 16215 ID: e329a9 [Reply]

Youtube  Im currently devoting my time to developing a new form of renewable energy based off of the already-existing Hydrogen fuel cell concept. I plan to experiment using different combinations of electrolytes, anode/cathode materials, voltages/amps etc. Ive started a kickstarter campaign in order to fund the research. To keep things short and sweet, I'm looking for backers to help with my project; anything at all helps! Also, use this thread to share opinions/ideas on fuel cells and how they could be made more efficient. So far my research has lead to the creation of a basic fuel cell, some new concepts and 12,000 volts accidentally delivered directly to my genitals (dont lean on loose wires). https://www.kickstarter.com/projects/718106819/advancement-in-electrolytic-energy-production




Sci-fi 20/Traveller 20 rule book PDF Anonymous 15/10/04(Sun)23:42 No. 16212 ID: 592535 [Reply]

Youtube  Me and a couple friends are looking for the PDF collections of Sci-Fi 20 and Traveller 20 roleplaying games.

Could anybody lend us a hand?




BCBA Exam is a Scam Anish 15/10/03(Sat)20:49 No. 16209 ID: 3b12fc [Reply]
16209

File 144389819316.jpg - (18.95KB , 262x344 , appb.jpg )

Hello, my name is Anish Patel and you should read this if you have ever taken or plan to take the BCBA exam.

I am someone who, let’s just say know how things work.

Have you failed the BCBA exam.

This may be the reason why.

The board raises the percent rate to pass as each person meets that rate or passes the test. Here is an example, let’s say the starting rate to pass the test is 76 percent and there are ten people taking the test. The first person taking the test passes, the rate is still 76 percent. The second person that takes the exam passes, now the board raises the pass rate to 77 percent. The third person takes the test and passes; now the board raises it to 78 percent. So even if the next couple of people got the original rate of 76 or 77 percent, they now will fail, And everyone who got the original passing rate of 76 percent, will also now fail, because the board kept raising the rate. As more and more people pass the higher. Then eventually after a certain percentage of people pass the test, the board will have a cutoff point. Did you ever just miss the exam by a couple of points? Chances are you really passed but were part of the cut off.

The way you pass the test is almost by luck, not by aptitude. It depends on how many people take the test, and how many people pass, and what the cut off rate is. Not only is the grading of the test scores is manipulated, but after a certain number of people pass the board will fail everyone after that point whether they passed or not. How you ever wondered why it takes 45 days after you take your test to get the results. You are taking your test on a computer, the results should be instant. The waiting period is for the board to see how many people took the test and for the board to decide how to manipulate the test scores and decide a cut off rate. There is a 150 questions you get a certain amount of questions right you either pass or fail. They claim they are measuring you and weighing you against other candidates. The board states their own words on the report they send you “The graph shows your performance in comparison to the group of candidates who have “just passed” the examination. These are candidates who obtained scaled scores between 400 and 414 (which is 1 standard error of measurement [SEM]* above 400.)” Chances are you just were on the wrong side of their manipulated passing line.

The board also looks down on you if you fail the test. Each time you have to take the test, you will have to start at a higher percentage point, in order to pass. That is why people are taking the BCBA exam multiple times.

The board claims it is all about “ethics” but they are being the most unethical.
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