scm007

Does anybody have a good resource (preferably online) that has efficient experiments to determine the identity and concentration of salts? Basically I have to perform the quintessential 'white powder' experiment, but I am uncertain about which experiments to perform. Much obliged, Teve

OK, I have an idea which is much like a Creative Zen Portable Media center. How would I go about designing something like that. I have a B.A. in EE, but approaching a project of that complexity is another matter. For that matter, I don't even know everything I would need in designing that system. Is there a computer aided system I could use? Or what about micro boards and such. Help please! Any books I could read? I have access to an extensive library.

yes you can do it using the animation variable. For some use 2*a to make it move faster, 1/2*a to move slower, tec.

THis raises an interesting point, how much does your diet and nutrition as a baby affect your IQ as an adult, if any? Anybody have any conclusive answer?

You guys seem like you are getting to far into conspiracies. Sure the oil companies want to protect their assets, but if a new business opporutunity arises, they aren't going to turn it down because it is new. Currently they can drill for oil MUCH cheaper than they can produce it using waste and biomass and all of that. Once this changes, then there will be more money going into said programs, but until then, get used to raising gas prices.

I'm interested in learning as much about biochem as I can get my hands on. Although this is an EXCELLENT site for information, it is located is disparate posts. I'm wondering if there is a general overall biochemistry site or post or pdf that I can download and read? Possibly for other subjects as well (math, physics, etc.). Thanks a bunch. -Stephen

If you want to use some math to model it for you, you can write a fairly simple program using OpenGL and C. But if you knew enough programming to succesfully do that, then you wouldn't have asked. However, you can download a mathematics program such as Livemath (not too good but it will suffice for your purposes) to model elliptical orbits. To do so just use the polar formula for an ellipse, a/(1+b*sin(theta)) and model it for whichever a and b you desire in order to model the orbit you want. If you want to add even more realism, you can program this orbit in relationship to the velocity of the orbiting body, and this velocity is going to be determined by amount initially given and the acceleration of the body due to gravity (-Gm_1m_2/r^2). Anyway, all you really need is 1/(1+bsin(theta)) and you should be able to get what you want.

What is this?

I got to 41 with no sound 1st try. I just made up a song as it went along. Yellow yellow red yellow green blue blue, yellow red yellow green blue blue blue!

I'm in Caltech right now, they have a great program for Biomedical Engineering undergraduate (although I imagine I'm going to be going the full way to my Ph.D)

Yeah they can make 1,000 gb disks today, however they are three feet in diameter...

Yes I was teaching myself. I must have missed that somewhere. Thanks.

Interesting. I'm a pretty deep sleeper, but it takes me FOREVER to fall asleep. Usually between 30mins-2 hours. I just keep going over everything that has puzzled me, or even things that haven't. Last night I went through an entire proof of Cauchy inequality in my head before I went to sleep. And sometimes it is almost random what I think about, but it always concerns some sort of "intellectual" idea. Is there some coorelation between intelligence and how hard it is for you to fall asleep?

And how does it change the conformation of the protein? And how does changing the conformation allow the protein to pass across the membrane?

So how do the ligands control ions passing across the membrane? Do they bind with them to create molecules to large to go through the channels?

I'm guessing that nobody wants to field this?

No that is not typical of my high school, in fact it is far from it. But I'm far from normal.

Anybody think they can give me an explanation of the structure and function of the ionotropic glutamate receptors? I understand the basic principals of the flux in calcium ions, spurring a realease of glutamate, which interact with the receptor proteins. But where exactly do the ionotropic glutamate receptors stand in this, are they simply one type of receptor protein? And if so, does anybody know what the primary, secondary, tertiary, and quarternery structures of these proteins are, and how they affect this whole process? A term that I have come across is ligand gated ion channels. What are these? Thanks in advance, and possibly this thread should be under the neuroscience section in the Medical Science seeing as how this operates in the brain. I know that these questions may be pretty specific, but give a go at whatever you know. Thanks--Stephen

Now go ahead and make it I'll look for your name in the obituaries.

I'd say the Feynman Lectures on Physics. I just started on this and it is really great. You need to know some calculus and be able ot apply it for some parts however.

Hmm I never had trouble memorizing them, or there inverses If your having problems just write them in terms of cosine and sine, you could be able to derive them with quotient/product rules. For example d/dx (sec x) = d/dx (cosx)^-1 = (sinx)/(cos x)^2 = tanx * secx See? And for inverses, just do it in terms of y, like if y = arcsin x, then x=siny Drawing a triangle you should be able to figure it out from there.

Well I'm in high schol here is what I have (college classes) Calculus III Number Theory 2 University Physics 1, then 2 Chemistry 2, then 3 Possibly Computer Science 141

My recommendation would be to make a Gauss rifle. Have you heard of those? Use standard magnets instead of producing a magnetic field with electricity. Would someone mind giving me a detailed explanation of a rail gun? I know the principle by I mean from like an engineering standpoint, and why it works?

Hi, I'd like some explanations of what the primary, secondary, and tertiary structures of proteins, protein purification, and basic protein spectroscopy are. I've taken only 2 quarters of inorganic chemistry. Most of my work has been in stoichiometry. Anybody think they can give me an explanation of these things?

Hi, I'd like some explanations of what the primary, secondary, and tertiary structures of proteins, protein purification, and basic protein spectroscopy are. I've taken only 2 quarters of inorganic chemistry. Most of my work has been in stoichiometry. Anybody think they can give me an explanation of these things?