Most typewriter shops did not use alcohol as it was ineffective and contained water. Industrial alcohols contained keytones and acetones that will melt plastic and remove paint.

Solvents for typewriters used in repair shops: - White mineral spirits with a squeeze bottle. (Sometimes also called Varsol, Stoddard's Formula, and possibly Inhibisol) - Naphtha (aka lighter fluid; used in Zippo lighters, and frequently seen in Europe). PB B'laster is essentially pressurized naphtha in a can. - Auto carb and brake cleaners, usually pressurized in a can. These usually have acetone in them and will melt plastic. Will remove WD-40 if accidentally used on a typewriter.

For cleaning typeslugs, one can use naphtha or mineral spirits with a brass bristle brush.

For platen cleaning try mineral spirits or fedron.

Only oil the carriage rails for the bearings or trucks.

(This is all colloquial advice, albeit with experience, so check specific facts about what certain products contain.)

should find a better reference

LOL. stupid shit. only the multiplication of scalar values is always defined.<br /> multiplying two nonscalar values is defined only in some cases, and certailnly not for money.<br /> multiplying two lengths (1 meter x 1 meter) only works, if the two lenghts are orthogonal... idiots

https://en.wikipedia.org/wiki/Max_Verstappen

This formula is wrong. It should be as follows: $$Var(\hat{\beta}1) = \frac{\sum{i=1}^N Var(x_i - \bar{x})^2 u_i}{(Var(\sum_{i=1}^N (x_i - \bar{x})^2))}$$

Otherwise, $\sigma_{\hat{\beta}_1}$ is different for each $u_i$.

Formula: total # of punctuation marks used / total # of sentences

Formula: total # of words / total # of sentences

Formula: total # of words / total # of lines

Formula: # of words that appear exactly once/total # of words

Formula: total # of distinct words / total # of words

compound probability = 1 - (1 - annual probability of excedence)^n where:

• annual probability = 0.01
• n = exposure period = 10 years

by other hand Mean Recurrence Interval - MRI = Return Period = 1 / annual probability of exceedence, but only if MRI >= 10 years, if not then:

annual probability of excedence = 1-e(-1/MRI)

Si el grupo tiene un investigador que no produce, el resultado será inferior. Hay una relación entre el autor y sus productos.

Revisar la fórmula de medición presentada en la página siguiente.

Testing out PDF annotation that also include LaTeX rendered formulas.