## Explain the experimental evidence for TTL counter sets as 7 in file search

TTL limits the lifespan or lifetime of data in a computer or network, now what is the meaning of 7 in a file search?

## Can Alchemists Experimental elixirs be combined to generate a roll on the potion miscibility table in the DMG?

Dmg p140 has a potion miscibility table. Artificer subclass Alchemist creates Experimental Elixirs. Can these elixirs be combined for a roll on the aforementioned table?

## Fitting Experimental Data To SRK-Type Equation of State. Minimization

I’m trying to find parameters to fit an EoS to saturation pressures to different temperatures.

My experimental data are like this

``psatx={{Temperature1,Pressure1,Uncertainty1},{T2,p2,u2},....} ``

Then I defined a function to calculate saturation pressures

``psat[T_, p0_, Tc_, a0_, b_, c1_, E11r_, v11_] := (Do[    p[0] = p0;    f11 = Exp[-E11r/T] - 1;    m11 = v11*f11;    a = a0*(1 + c1*(1 - Sqrt[T/Tc]))^2;    \[Alpha] = p[i]*a/(R*T)^2; (* Dimensionless groups*)    \[Beta] = p[i]*b/R/T;    \[Gamma] = p[i]*m11/R/T;    d0 = -\[Gamma]*\[Beta]*(\[Beta] + \[Alpha]);(*Coefficients of the equation*)    d1 = \[Alpha]*(\[Gamma] - \[Beta]) - \[Beta]*\[Gamma]*(1 + \[Beta]);    d2 = \[Alpha] - \[Beta]*(1 + \[Beta]);    d3 = \[Gamma] - 1;    d4 = 1;    polin = d4*z^4 + d3*z^3 + d2*z^2 + d1*z + d0;    Raices = NSolve[polin == 0, z, PositiveReals]; (* Solving the 4th grade polinomy for compressibility factor*)    zv = Max[z /. Raices];    zl = Min[z /. Raices];    vv = zv*R*T/p[i];    vl = zl*R*T/p[i];    ln\[CapitalPhi]v =      zv - 1 - Log[zv] + Log[vv/(vv - b)] + a/b/R/T*Log[vv/(vv + b)] +       Log[vv/(vv + m11)]; (*Fugacity coefficients*)    ln\[CapitalPhi]l =      zl - 1 - Log[zl] + Log[vl/(vl - b)] + a/b/R/T*Log[vl/(vl + b)] +       Log[vl/(vl + m11)];    \[CapitalPhi]v = Exp[ln\[CapitalPhi]v];    \[CapitalPhi]l = Exp[ln\[CapitalPhi]l];    p[i + 1] = p[i]*\[CapitalPhi]l/\[CapitalPhi]v,    {i, 0, 9}];   p[9])  ``

Where T is the temperature, p0 is the initial guess for pressure, Tc is the critical temperature and a0, b, c1, E11r, v11 are the equation’s parameters.

Up to this point, we have a saturation pressure calculator, given the parameters, and it works just fine, now the thing that I can’t seem to solve is fitting it to my experimental data, by minimizing an objective function, which is:

I declared it like this:

``F[a0_, b_, c1_, E11r_, v11_] :=   Sum[(psat[psatx[[k, 1]], psatx[[k, 2]], Tcaceto, a0, b, c1, E11r,        v11] - psatx[[k, 2]])^2/psatx[[k, 3]]^2, {k, 200}]; (* I declared the Tc as "Tcaceto", a constant, and I use as initial guess for each psat calculation the experimental pressure*) ``

And then I just used NMinimize, in this way.

``NMinimize[F[a0, b, c1, E11r, v11], {a0, b, c1, E11r, v11}] ``

I run it, and it just never finishes. I don’t know what could be the thing that doesn’t work, I’ve tried setting the method, starting points, but the result is the same. I would really apreciate if someone helped me in this matter. Thanks.

## Where do I find the experimental ZFS on root options

I downloaded the beta yesterday. When I start the installer, I never see ZFS on root options. Is there an additional step or something?

## Experimental design, ” how chatbots can impact on a user’s experience”, is better to use Within subjects or between subjects?

I have to do an experimental design “about how chatbots can impact on a user’s experience when using public transport websites to book journeys”. I am not really sure what type of experimental design to choose, would go for Within subjects or between subjects ?

thank

m-

## How to opt-out of a specific experimental feature by Google

Recently, I apparently got entered into an experimental new layout of Google Images. The layout I now get for images can be seen below:

As you can see, the entire image preview is not much bigger than the original thumbnail, because the whole preview banner is shoved to the side of the images. I really dislike this new layout, because it basically forces me if I want to enlarge the image to do it by opening it in a new tab (which is an extra right click and ‘open image’ press). This is way more effort than browsing through images by simply clicking the thumbnail once, or even using arrow keys to navigate through.

I’d love to turn off this experimental feature. Is there an account setting I can change to opt-out of this feature? Or if not, is it possible to opt-out of experimental features whatsoever?

Before you ask, yes I just sent a feedback report to Google, but I’m not sure what they might do with it or if it’s even possible for the support staff to disable this feature for me.

## Drupal 8: How to remove the experimental module warning from /admin/reports/status?

My drupal 8 site is showing a experimental modules enabled warning under `/admin/reports/status`. I vaguely remember to have them enabled at a certain time, but I forgot where.

I don’t use any of them, how can I remove the warning and disable the experimental modules again?