Thermal fixation

Thermal Fixation Properties of Disperse Dyes on Polyester—Gotton. This method assesses the fixation properties of disperse dyes as a function of the time, temperature, dyestuff concentration, or presence and amount of auxiUary agents. The polyester—cotton fabric is padded and dried, the cotton dissolved in sulfuric acid and washed out of the blend, and the amount of dye on the polyester component assessed by either reflectance or measuring the optical density of a solution of dye obtained by extracting the dye with boiling chloroben2ene solvent. 

For many years it was generally assumed that the thermal fixation of NO occurred according to the mechanism suggested by Zeldovich et dl. 

Thermal Fixation. The preceding sections have shown that during natural gas combustion, NO results from the high temperature fixation of atmospheric nitrogen according to the following reactions and coupled... 

Sample preparation in electron microscopy is usually performed using chemical or thermal fixation techniques for sample immobilization. The evaluation and details of each preparation technique are presented below. 

Thermal fixation techniques are preferred in the study of microstructured liquids, hydrated biological specimens, fluid-filled porous media, etc. Because thermal fixation is used for such diverse applications, there are a wide variety of fixation techniques and associated equipment that impart microscopic stability to the specimen. 

The essence of cryomicroscopy lies in the ability to vitrify the sample using the thermal fixation technique that alters the sample microstructure to the least extent. Cooling rate estimates of 10 K/s [14], 10 K/s [15], and 10 K/s [16] are quoted as necessary to vitrify water or dilute aqueous suspensions. The ability to achieve the desired cooling rate depends on the sample, the cryogen, and the fixation technique. 10 K/s is probably the most accurate estimate. This evaluation is based on estimates of the cooling rate in freezing techniques that are known to produce vitreous specimens. 

Dyeing, thermal fixation n. A process for dyeing polyester whereby the color is diffused into the fiber by means of dry heat. 

In a series of laboratory tests we looked into whether the combined process could be used with a variety of textile waste as well as with glass fibres and rongh natural fibres. Using a particular range of physical processes, we fixed the raw webs (furs) so as to receive textile mats. We blended in both fibrous and powdery bonding components to allow thermal fixation. (Using the combined process on an industrial scale, fur fixation to achieve semi-products or final products definitely requires a continuous process.)... 

Nonwoven geotextiles first form a loose web or layers of fibers or filaments, arranged in either an oriented or random pattern, prior to fixing them by bonding (by an adhesive or thermal fixation) and in this way a cohesive planar stmcture is developed. 

Coad JE, Kosari K, Humar A, et al (2003) Radiofrequency ablation causes thermal fixation of hepatocellular carcinoma a post-liver transplant histopathologic study. Clin Transplant 17 377-384... 

Filament yarns for industrial and technical applications are mostly uncrimped yarns spun in the spin-draw process. The drawing is a two-step process with subsequent thermal fixation (four pairs of godets). 

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