Recent content by Sosi

Indeed, this is very important! And if you look at some of the research on protein structure, protein crystallography is often carried while the protein is interacting with a specific component because that's very important for determining the protein folding. @ZetaOfThree - there are some...

Though I'm a biologist, I have never worked in protein folding. Having said that, I'd like to add something to what Ygggdrasil has said just to make it a bit more understandable why those are all very important questions from the biological point of view. I believe that the holy grail of the...

Ok, so I setup a function that uses FindRoot to solve the system. I also added a few checkpoints along the run, where the operating points are results taken from a NDSolve command.Results: Before: System had 10 dependent variables. It took around 5 hours to find solutions to those variables for...

Of course.. I wasn't seeing that. Yes, it should indeed work! I'll try it out and hopefully it runs much faster than NSolve. Thanks!

kai_sikorski: thanks for your reply! My objective is just to get the numerical solution to the system of equations by manually assigning values for an independent variable. Say that the independent variable x varies between 1*^-10 and 1*^-5. In this range, I'm considering ~200 values for x ...

Hello everyone! I have a system of equations which I am trying to solve in order to 13 dependent variables. Yet, I am only interested in the answers which are real positives. In my code I have implemented a way to select only the answer which satisfies this constraint: Cases[ NSolve[...

well, FindRoot was what I was looking for. Found it here: https://www.physicsforums.com/showthread.php?t=375633 Sorry to have created a new thread, I only found the link above afterwards.

Hi guys! I'm trying to the value of x when a function F[x] has a certain expression. I'm computing the value of F[x] using NDSolve and a set of differential equations - all numerically. Yet, I can't find an easy and systematic way to find the value of x when F[x]=constant. I tried using...

all the species from reactions 1 and 2 are stable. I was advised to consider an open system in which the reactions were not reversible. Does this help? I'm not seeing how I can use this information... Thanks!

Hi! I have a couple of reactions whose rate constants are known: A + B -> C + D (reaction 1) C + B -> E + F (reaction 2) and I want to know the rate constants of the sum of these reactions. That is: A + 2B -> D + E + F (reaction 3) How may I know the rate constant for reaction 3...

Awsome! It works just as I wanted! Thanks a lot!

Hi! I'm doing my first steps in Mathematica and I've wanted to do something simple like assigning a variable to the output and then use it. Something like this: In:Vp = vprx == kprx2*X1; In:dX1 = kp X0 + X1 (-cat kcatl - kgpx gpx - kprx2 prx2); In:rX1 = Solve[dX1 == 0, X1]; Out:{{X1 ->...