search for: peroxide

...uot;names(sensory)" command, I will get two names: "Quality" and "Panel". But if I use "summary(sensory)" command, I will get information of five columns for "Quality" and 6 columns for "Panel" (such as "Quality.Acidity" "Quality.Peroxide"...). So when I use PLS regression, the function is simply "Panel ~ Quality" (but it's actually multiple regression). Does anyone know how to build such dataframe? Please share some experience. Really appreciate the help! Sincerely, Jeny

On Mon, 2016-02-08 at 14:22 -0800, John R Pierce wrote: > the only truly safe way to destroy data on magnetic media is to grind > the media up into filings or melt it down in a furnace. I unscrew the casing, extract the disk platter(s), slide a very strong magnet over both sides of the platter surface then bend the platter in half. How secure is that ? I can't afford a machine that

...> > I can't afford a machine that grinds everything into dust particles. > I have seen a guy in the I.T. department where I work take a hard > drive....remove as many stickers from it (to make it porous as possible) > and then soak it in a "brine" of ammonia, hydrogen peroxide, bleach, and > salted water...for like a week or two. Afterwards? total useless junk. I often find harddrives with several 10 mm drill-holes in them, in the electronics disposal room at work. I'd say that'd be enough as well. 8-) -- //Sorin

...ure is that ? > > I can't afford a machine that grinds everything into dust particles. I have seen a guy in the I.T. department where I work take a hard drive....remove as many stickers from it (to make it porous as possible) and then soak it in a "brine" of ammonia, hydrogen peroxide, bleach, and salted water...for like a week or two. Afterwards? total useless junk. EGO II