Einwaage

English translation: weight, net weight, initial weight

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
German term or phrase:Einwaage
English translation:weight, net weight, initial weight
Entered by: Goldenbead
Options:
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- Include in personal glossary

01:49 Nov 29, 2006
German to English translations [PRO]
Science - Chemistry; Chem Sci/Eng
German term or phrase: Einwaage
bezieht sich auf Polyacrylamidloesungen
Goldenbead
India
Local time: 02:22
weight, net weight, initial weight
Explanation:
depending on your context..

--------------------------------------------------
Note added at 24 mins (2006-11-29 02:14:39 GMT)
--------------------------------------------------

Thanks, Hannah. I am tempted to say "where the polymer weight resulted in a near-critical gel concentration"... based on the sentenc. That is, the wiehgt of the polymer is such that it has led to a concentration close to the critical gel or gelation concentration (gel-formation). Gel formation requires a critical polymer concentration to be reached.

--------------------------------------------------
Note added at 25 mins (2006-11-29 02:15:37 GMT)
--------------------------------------------------

May be better "...near-critical gelation concentration".

--------------------------------------------------
Note added at 28 mins (2006-11-29 02:17:41 GMT)
--------------------------------------------------

Another version: "where the polymer concentration was within the limits of critical gelation concentration"... Here I have substituted "concentration" for "wieht" as it is the concentration that matters..

--------------------------------------------------
Note added at 1 hr (2006-11-29 02:59:31 GMT)
--------------------------------------------------

where the polymer weight resulted in a concentration which lay within the neighborhood of the critical concentration for gelation.

--------------------------------------------------
Note added at 15 hrs (2006-11-29 17:31:09 GMT)
--------------------------------------------------

... in such a way that the initial polymer concentration was close to the critical gelation concentration.

"Critical gelation concentration" is the expression used in literature on this topic:


ABSTRACT: The gelation rates of poly(viny1idene fluoride) (PVF2) gels have been measured for three
commercial samples each in two different solvents at different polymer concentrations and also at different
temperatures. The rate has been expressed as a combination of temperature-dependent function AT)
and concentration-dependent function (9)”; C#I is the reduced overlapping concentration of the polymer
chains. $I has a resemblance with the P - P, term of percolation theory, P being the conversion factor
and P, its critical value. Exponent n has been measured from double logarithmic plots of tgel-I and 4,
and it lies between 0.45 and 0.6 which is closer to percolation exponent p (0.45) of a three-dimensional
lattice. This indicates that three-dimensional percolation is a suitable model for this themoreversible
gelation process. The temperature-dependent function of the gelation rate has been found to be analogous
to the temperature-dependent function of the nucleation rate of crystalline polymers in dilute solutions.
There is some dependency of the gelation rate on the amount of H-H defect (-CFzCFz-) structures
present in the polymers and also on the molecular weight of the samples. Solvents also have a significant
influence on the gelation rate of the polymer: the poorer the solvent, the faster is the gelation rate. ** The
critical gelation concentration (Ct=a*) ** measured from gelation kinetics by an extrapolation procedure
increases with temperature in each case. Thermodynamic analysis of the variation of Ct=,* with
temperature reveals that about three to six crystallites (depending to produce a single crosslink in the gel.


--------------------------------------------------
Note added at 15 hrs (2006-11-29 17:33:10 GMT)
--------------------------------------------------

Here is another abstrsact using "critical gelation concentration":

*********************

Abstract:

Monte Carlo computer simulation on a square 3-D lattice is used to model state behavior of globular copolymers. Two types of globular molecules were defined. One consisted of a single type of subunit (a homopolymer) while the second contained a core of strongly attractive subunits and an outer layer of less strongly attractive subunits (a heteropolymer). Systems of globules were simulated at varied volume fraction (VF) and reduced temperature (TR), and state diagrams were constructed. These state diagrams contained state boundaries defined by the VF/TR combinations at which the system formed a percolating network and at which the various component subunits in the globule unfolded. Simulated systems could exist in a number of states (between 4 and 7), depending on the VF, TR, whether the molecule was a homo- or heteroglobule and whether the globules were allowed to interact with each other or not. All systems exhibited a gelation/crossover line that resembled a lower critical solution temperature. All systems also exhibited a critical gelation concentration, above which a continuous network was formed. ** The critical gelation concentration ** varied between about 2-4% VF depending on the type of system. This is comparable to experimental critical gelation concentrations of in the region of 4% (w/w) for a range of associating polymers and biopolymers such as globular proteins and polysaccharides. Other states were formed which included one where elongated, fibril-like aggregated strands were formed, and a micelle-like aggregated state. The results are discussed in terms of the known state behavior of associating polymers and biopolymers (proteins and polysaccharides).
Selected response from:

Zareh Darakjian Ph.D.
United States
Local time: 13:52
Grading comment
Thanks Dr. Darakjian
4 KudoZ points were awarded for this answer



Summary of answers provided
3 +1weight, net weight, initial weight
Zareh Darakjian Ph.D.


Discussion entries: 1





  

Answers


8 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): +1
weight, net weight, initial weight


Explanation:
depending on your context..

--------------------------------------------------
Note added at 24 mins (2006-11-29 02:14:39 GMT)
--------------------------------------------------

Thanks, Hannah. I am tempted to say "where the polymer weight resulted in a near-critical gel concentration"... based on the sentenc. That is, the wiehgt of the polymer is such that it has led to a concentration close to the critical gel or gelation concentration (gel-formation). Gel formation requires a critical polymer concentration to be reached.

--------------------------------------------------
Note added at 25 mins (2006-11-29 02:15:37 GMT)
--------------------------------------------------

May be better "...near-critical gelation concentration".

--------------------------------------------------
Note added at 28 mins (2006-11-29 02:17:41 GMT)
--------------------------------------------------

Another version: "where the polymer concentration was within the limits of critical gelation concentration"... Here I have substituted "concentration" for "wieht" as it is the concentration that matters..

--------------------------------------------------
Note added at 1 hr (2006-11-29 02:59:31 GMT)
--------------------------------------------------

where the polymer weight resulted in a concentration which lay within the neighborhood of the critical concentration for gelation.

--------------------------------------------------
Note added at 15 hrs (2006-11-29 17:31:09 GMT)
--------------------------------------------------

... in such a way that the initial polymer concentration was close to the critical gelation concentration.

"Critical gelation concentration" is the expression used in literature on this topic:


ABSTRACT: The gelation rates of poly(viny1idene fluoride) (PVF2) gels have been measured for three
commercial samples each in two different solvents at different polymer concentrations and also at different
temperatures. The rate has been expressed as a combination of temperature-dependent function AT)
and concentration-dependent function (9)”; C#I is the reduced overlapping concentration of the polymer
chains. $I has a resemblance with the P - P, term of percolation theory, P being the conversion factor
and P, its critical value. Exponent n has been measured from double logarithmic plots of tgel-I and 4,
and it lies between 0.45 and 0.6 which is closer to percolation exponent p (0.45) of a three-dimensional
lattice. This indicates that three-dimensional percolation is a suitable model for this themoreversible
gelation process. The temperature-dependent function of the gelation rate has been found to be analogous
to the temperature-dependent function of the nucleation rate of crystalline polymers in dilute solutions.
There is some dependency of the gelation rate on the amount of H-H defect (-CFzCFz-) structures
present in the polymers and also on the molecular weight of the samples. Solvents also have a significant
influence on the gelation rate of the polymer: the poorer the solvent, the faster is the gelation rate. ** The
critical gelation concentration (Ct=a*) ** measured from gelation kinetics by an extrapolation procedure
increases with temperature in each case. Thermodynamic analysis of the variation of Ct=,* with
temperature reveals that about three to six crystallites (depending to produce a single crosslink in the gel.


--------------------------------------------------
Note added at 15 hrs (2006-11-29 17:33:10 GMT)
--------------------------------------------------

Here is another abstrsact using "critical gelation concentration":

*********************

Abstract:

Monte Carlo computer simulation on a square 3-D lattice is used to model state behavior of globular copolymers. Two types of globular molecules were defined. One consisted of a single type of subunit (a homopolymer) while the second contained a core of strongly attractive subunits and an outer layer of less strongly attractive subunits (a heteropolymer). Systems of globules were simulated at varied volume fraction (VF) and reduced temperature (TR), and state diagrams were constructed. These state diagrams contained state boundaries defined by the VF/TR combinations at which the system formed a percolating network and at which the various component subunits in the globule unfolded. Simulated systems could exist in a number of states (between 4 and 7), depending on the VF, TR, whether the molecule was a homo- or heteroglobule and whether the globules were allowed to interact with each other or not. All systems exhibited a gelation/crossover line that resembled a lower critical solution temperature. All systems also exhibited a critical gelation concentration, above which a continuous network was formed. ** The critical gelation concentration ** varied between about 2-4% VF depending on the type of system. This is comparable to experimental critical gelation concentrations of in the region of 4% (w/w) for a range of associating polymers and biopolymers such as globular proteins and polysaccharides. Other states were formed which included one where elongated, fibril-like aggregated strands were formed, and a micelle-like aggregated state. The results are discussed in terms of the known state behavior of associating polymers and biopolymers (proteins and polysaccharides).


Zareh Darakjian Ph.D.
United States
Local time: 13:52
Specializes in field
Native speaker of: Native in EnglishEnglish, Native in ArmenianArmenian
PRO pts in category: 162
Grading comment
Thanks Dr. Darakjian
Notes to answerer
Asker: Bei den folgenden Alterungsversuchen wurden nur noch Stammloesungen hergestellt, wobei die Polymereinwaage etwa bei der kritischen Gelknaeuelkonzentration lag. (this is the sentence)


Peer comments on this answer (and responses from the answerer)
agree  xxxDavid Le Cou: I would agree with initial weight, or sample weight, or weight of reagent. It is the amount weighed out at the start of a procedure. It has been asked before and is in the glossaries
7 hrs
  -> Thank you, David!
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