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POLYACRYLAMIDE POLYMER [4 records]

Record 1 2011-08-23

English

Subject field(s)
  • Plastic Materials
Universal entry(ies)
(CH2CHCONH2)x
formula, see observation
CH=CHCONH2
formula, see observation
DEF

A water soluble high polymer, used as a thickening agent, a suspending agent, an additive to adhesives, and a permissible food additive.

OBS

Chemical formulas: CH=CHCONH2 or (CH2CHCONH2)x

French

Domaine(s)
  • Matières plastiques
Entrée(s) universelle(s)
(CH2CHCONH2)x
formula, see observation
CH=CHCONH2
formula, see observation
DEF

Nom générique des polymères et copolymères de l'acrylamide.

OBS

Solubles dans l'eau, ils sont utilisés comme apprêts, épaississants, floculants, etc.

OBS

Formules chimiques : CH=CHCONH2 ou (CH2CHCONH2)x

Spanish

Save record 1

Record 2 2011-02-09

English

Subject field(s)
  • Biological Sciences
DEF

Gel electrophoresis in which a discontinuity of pH or gel pore size is introduced near the point of origin producing a very thin starting zone and sharp separations.

CONT

The cross-linked polymer most commonly employed for enzyme entrapment is polyacrylamide gel, and it has been used for the immobilization of many enzymes. The procedure for the formation of polyacrylamide gel is identical to that employed for the preparation of gel commonly used for disc electrophoresis.

OBS

The term "disc" was originally proposed by the inventor primarily to express the idea of discontinuity, secondarily to reflect the discoid shape of the separate bands.

French

Domaine(s)
  • Sciences biologiques
DEF

Méthode dérivant de l'électrophorèse de zones où le mélange protéique qui doit être analysé est soumis à un champ électrique dans un gel retardateur qui est séparé en deux portions différant par leur porosité et tamponnées à pH différents. Le mélange de protéines migre du gel le plus poreux vers le gel le moins poreux, ce processus s'accompagnant d'une modification de pH. Chaque espèce de protéines se concentre ainsi dans une zone plutôt étroite, en bandes minces, ce qui permet d'obtenir une très grande résolution, plus élevée que celle obtenue avec un tampon continu.

OBS

Disc electrophoresis et disc-electrophoreis sont des termes anglais souvent cités dans les ouvrages français. A déconseiller.

Spanish

Save record 2

Record 3 1998-11-24

English

Subject field(s)
  • Biochemistry
CONT

Capillary gel electrophoresis(CGE) is the CE-analog of traditional slab-gel electrophoresis and is used for the size-based separation of biological macromolecules such as olgonucleotides, DNA restriction fragments and proteins. The separation is performed by filling the capillary with a sieve-like matrix, for example, cross-linked polyacrylamide, agarose or even solutions of linear polymer. The main advantages over slab-gel electrophoresis are a wider range of gel matrix and composition, online detection, improved quantification and automation.

French

Domaine(s)
  • Biochimie
CONT

L'électrophorèse capillaire en gel est fondée sur l'utilisation de capillaires de silice remplis de gel de polyacrylamide ou d'agarose. Cette technique est dotée d'une résolution importante autorisant son application au séquençage. En effet, elle permet de distinguer de courts fragments d'ADN (inférieurs à 1000 bases) dont la taille ne varie que d'une base.

Spanish

Save record 3

Record 4 1988-03-30

English

Subject field(s)
  • Plastic Materials
CONT

The polymer is generally modified chemically by replacing some of the amide groups with a carboxyl group.... This process... is called hydrolysis.... Both hydrolyzed and unhydrolyzed polyacrylamide are highly polar due to the amide and carboxyl group

French

Domaine(s)
  • Matières plastiques
CONT

Ce modèle a été expérimentalement vérifié dans les conditions de la récupération assistée du pétrole, avec des polymères effectivement utilisés sur champ, polyacrylamides hydrolysés et polysaccharides Xanthane [...]

Spanish

Save record 4

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