Dynamic Cross-Linking Effect of Mg2+To Enhance Sieving Properties of Low-Viscosity Poly(vinylpyrrolidone) Solutions for Microchip Electrophoresis of Proteins

2008 ◽  
Vol 80 (1) ◽  
pp. 312-316 ◽  
Author(s):  
Mohamad Reza Mohamadi ◽  
Noritada Kaji ◽  
Manabu Tokeshi ◽  
Yoshinobu Baba
Keyword(s):  
Microchip Electrophoresis ◽  
Cross Linking ◽  
Low Viscosity ◽  
Electrophoresis Of Proteins

High-performance heat resistant insulation materials for coils

1995 ◽  
Vol 7 (3) ◽  
pp. 325-336 ◽  
Author(s):  
Tohru Koyama ◽  
Katuo Sugawara ◽  
Chikasi Kanno ◽  
Syouichi Maruyama ◽  
Yoshikiyo Kashiwamura
Keyword(s):  
Heat Resistance ◽  
High Performance ◽  
Heterocyclic Ring ◽  
Cross Linking ◽  
Epoxide Resin ◽  
Traction Motor ◽  
Thermal Index ◽  
Low Viscosity ◽  
First Time ◽  
Good Workability

A new impregnating epoxide resin has been developed by optimizing cross-linking densities. The resin satisfies the thermal index of 210C: this is the first time an epoxide system without a heterocyclic ring has done so. Thermal class 220C insulating systems of traction motor coils are developed by interaction of the impregnating epoxide resin and epoxide binding resin in a new insulating tape. The newly developed epoxide impregnating resin has low viscosity and very good workability. Therefore, electrically insulated coils of various classes of heat resistance, such as class C (> 180C), class H (180 C) and class F (155C), can be prepared by using only a single kind of impregnating resin, by selecting the insulating tape and hardening conditions. It is unnecessary to keep various kinds of impregnating resin corresponding to the different beat resistant grades and it is possible to decrease drastically the amount of waste generated by using several different impregnating resins.

scholarly journals Characterization of low viscosity polymer solutions for microchip electrophoresis of non-denatured proteins on plastic chips

2011 ◽  
Vol 5 (4) ◽  
pp. 044114 ◽  
Author(s):  
Takao Yasui ◽  
Mohamad Reza Mohamadi ◽  
Noritada Kaji ◽  
Yukihiro Okamoto ◽  
Manabu Tokeshi ◽  
...  
Keyword(s):  
Polymer Solutions ◽  
Microchip Electrophoresis ◽  
Low Viscosity ◽  
Denatured Proteins ◽  
Viscosity Polymer

Influence of Calcium Ions on the Plant Cell Surface: Membrane Fusions and Conformational Changes

1974 ◽  
Vol 32 ◽  
pp. 154-155
Author(s):  
D. James Morré ◽  
Charles E. Bracker ◽  
William J. VanDerWoude
Keyword(s):  
Cell Wall ◽  
Cell Surface ◽  
Conformational Changes ◽  
Calcium Ions ◽  
Surface Membrane ◽  
Carboxyl Groups ◽  
Cross Linking ◽  
Ultrastructural Evidence ◽  
Glycine Max L ◽  
Wall Extensibility

Calcium ions in the concentration range 5-100 mM inhibit auxin-induced cell elongation and wall extensibility of plant stems. Inhibition of wall extensibility requires that the tissue be living; growth inhibition cannot be explained on the basis of cross-linking of carboxyl groups of cell wall uronides by calcium ions. In this study, ultrastructural evidence was sought for an interaction of calcium ions with some component other than the wall at the cell surface of soybean (Glycine max (L.) Merr.) hypocotyls.

Embedding Procedure for Water Swollen Samples

1970 ◽  
Vol 28 ◽  
pp. 504-505
Author(s):  
Ann M. Thomas ◽  
Virginia Shemeley
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ion Exchange ◽  
Structural Changes ◽  
Cross Linking ◽  
Ion Exchange Resins ◽  
Transmission Electron ◽  
First Pass ◽  
Exchange Resins

Those samples which swell rapidly when exposed to water are, at best, difficult to section for transmission electron microscopy. Some materials literally burst out of the embedding block with the first pass by the knife, and even the most rapid cutting cycle produces sections of limited value. Many ion exchange resins swell in water; some undergo irreversible structural changes when dried. We developed our embedding procedure to handle this type of sample, but it should be applicable to many materials that present similar sectioning difficulties.The purpose of our embedding procedure is to build up a cross-linking network throughout the sample, while it is in a water swollen state. Our procedure was suggested to us by the work of Rosenberg, where he mentioned the formation of a tridimensional structure by the polymerization of the GMA biproduct, triglycol dimethacrylate.

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