racine

English translation: root

06:56 Sep 17, 2010

French to English translations [PRO]
Science - Chemistry; Chem Sci/Eng

French term or phrase: racine

patent app
"un glucide ayant une racine moyenne au carré du rayon de giration égale ou inférieure au rayon modal de la matière minérale, un ou plusieurs [chemicals], le ou lesdits agents étant sous forme aqueuse ou pure"

the way I read this is "having an average root equal to the square of the radius of gyration". Does this make sense in this chemical context? Also does "au" really mean "égal au"... or am I reading the whole thing incorrectly?

Mpoma KudoZ activity Questions: 1027 (3 open) (91 closed without grading) Answers: 386 United Kingdom
Local time: 15:41

English translation:root

Explanation:
racine moyenne au carré = root-mean-square (rms)
racine moyenne au carré du rayon de giration = root-mean-square gyration radius

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Note added at 56 mins (2010-09-17 07:53:26 GMT)
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The component list contains several items [consistant en]. One of them is "a glucide, for which the rms radius of gyration is less than or equal to the modal radius of the mineral".
So, two statistical averages are compared, a root-mean-square value (http://mathworld.wolfram.com/Root-Mean-Square.html) and a modal value / mode (http://mathworld.wolfram.com/Mode.html). The glucide in question is such that a certain relationship holds between the two values.

You will find lots of references for "root-mean-square radius of gyration". Here is one: http://tinyurl.com/38byjrp . The French formulation, "racine moyenne au carré" is unusual and unclear; the correct term is "moyenne quadratique". But the meaning is clear from the context.

Selected response from:

Attila Piróth
France
Local time: 16:41

Grading comment

thanks
4 KudoZ points were awarded for this answer

Summary of answers provided

5 +5

root

Attila Piróth

radical

Carl Stoll

Summary of reference entries provided

Attila has it

Bourth (X)

Discussion entries: 8

chris collister

France

rms

11:24 Sep 17, 2010

Root mean square, usually abbreviated to just "rms" is, as it implies, the square root of the sum of all the squares of whatever you're measuring: ball-bearings, leaf length, electrical noise or radii of gyration. It is mathematically (very nearly) equivalent to the sample standard deviation, or "écart-type". Note that alternating electrical voltages are usually given as rms values, since, in going from -230 to +230V, the arithmetic mean is zero!

Mpoma

United Kingdom

ASKER

Cool

08:11 Sep 17, 2010

Thanks, Attila

Attila Piróth

France

Original formulation is substandard

08:07 Sep 17, 2010

"racine moyenne au carré" should read "racine carrée de la moyenne du carré" - and it would make perfect sense then. See http://fr.wikipedia.org/wiki/Moyenne_quadratique#Moyenne_qua...

Mpoma

United Kingdom

ASKER

odd absence of term

08:04 Sep 17, 2010

Dear all, thanks for your contributions so far. I agree with Carl Stoll that it looked like a chemical term. But Bourth's links are pretty conclusive. What is curious to me is that nowhere (e.g. GDT, Termium, here) could I find, before posing this question, any translation of "racine moyenne (au) carré" ... root mean square is "valeur quadratique". Odd.

Mpoma

United Kingdom

ASKER

Thank *you*

07:43 Sep 17, 2010

I do! Thanks for taking an interest anyway!

Bourth (X)

Thanks

07:40 Sep 17, 2010

It now makes more sense to me, even if I don't understand it, if you see what I mean!

Mpoma

United Kingdom

ASKER

07:10 Sep 17, 2010

"Un premier objet de l’invention consiste donc en l’utilisation, comme agent [which performs a certain function], de formulations consistant en : [various chemicals]... de masse moléculaire en poids comprise entre 100 g/mole et 10000 g/mole préférentiellement entre 700 g/mole et 7000 g/mole, un glucide ayant une racine moyenne au carré du rayon de giration égale ou inférieure au rayon modal de la matière minérale, un ou plusieurs poly-glycérols, le ou lesdits agents étant sous forme aqueuse ou pure."

So basically this carbohydrate is one of several possibilities to achieve the desired end...

Bourth (X)

Fuller context

07:05 Sep 17, 2010

Admittedly chemistry is a mystery to me, but apart from the terminological problem, the sentence seems incomplete. Can you give the lead in to and the lead out from this "sentence"?

Answers

4 mins confidence:

peer agreement (net): +5

root

Attila Piróth
France
Local time: 16:41
Specializes in field
Native speaker of:

Hungarian
PRO pts in category: 8

Grading comment

thanks

Notes to answerer

Asker: the possibility that it might have sthg to do with square roots occurred to me... where is your authority or is it a guess? I note you appear to have "total confidence"

1 hr confidence:

radical

Explanation:
Looks like a chemical term to me, not a mathematical one.

Carl Stoll
Argentina
Local time: 11:41
Specializes in field
Native speaker of:

English
PRO pts in category: 4

Reference comments

48 mins

Reference: Attila has it

Reference information:
but here's what I came up with:

As detailed below, the radius of gyration is also proportional to the root mean square distance between the monomers: R_{mathrm{g}}^{2} stackrel{ ...
en.wikipedia.org/wiki/Radius_of_gyration –

Radius of gyration describes the overall spread of the molecule and is defined as the root mean square distance of the collection of atoms from their common ...
www.scfbio-iitd.res.in/software/proteomics/rg.jsp

functions allows the quantitative evaluation of the copolymer root-mean-square radius of gyration ( (R,2)1/2). The dependence of (R,2)1/2 on the fraction of ...
www.stanford.edu/group/fayer/articles/082.pdf

Bourth (X)
Native speaker of:

English
PRO pts in category: 87

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English translation: root

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