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Articles 391 - 395 of 395

Full-Text Articles in Biomedical Engineering and Bioengineering

The Chemical Resistance Of Polyhexamethylene Adipamide , Ruth Olive Donohue Jan 1942

The Chemical Resistance Of Polyhexamethylene Adipamide , Ruth Olive Donohue

Retrospective Theses and Dissertations

No abstract provided.


Mordanting Of Wool With Salts Of Aluminum , Lois Wilna Dale Jan 1942

Mordanting Of Wool With Salts Of Aluminum , Lois Wilna Dale

Retrospective Theses and Dissertations

A comparison of the aluminum-chloride and sulfuric-acid methods for the quantitative estimation of wool in cellulosic admixtures has been made by determining their effects on the weight, ash, total sulfur, and sulfate sulfur of wool;Change in weight of wool by the aluminum-chloride method varied from -2.1 to +1.9 percent for 32 determinations which averaged -0.2 +/- 0.9 percent; for five sets of six parallel determinations the means ranged from -1.2 to +1.0 percent. Change in weight of wool by the sulfuric-acid method varied from -0.6 to +2.4 percent and averaged +0.9 ...


I Halogen As A Finish For Wool Ii Formaldehyde As A Finish For Wool Iii Comparison Of Three Textile Detergents , Florence Virginia Barr Jan 1940

I Halogen As A Finish For Wool Ii Formaldehyde As A Finish For Wool Iii Comparison Of Three Textile Detergents , Florence Virginia Barr

Retrospective Theses and Dissertations

Plain-woven cotton, regenerated-cellulose rayon, cellulose-acetate rayon, silk, wild silk, and wool were washed separately by hand in 0.5 percent solutions of neutral olive-oil soap, silicated soap, or sulfated alcohol for five minutes at room temperature, rinsed until the rinse no longer foamed and dried in air and diffused light at room temperature. After ten, twenty, thirty, forty, and fifty washings all the fabrics were analyzed for ash, percentage of light absorbed, shrinkage, wet warp breaking strength, elongation at breaking load, and weight. The silks and wool were analyzed for total nitrogen and sulfate sulfur, the wool for total sulfur ...


Oxidation, Reduction And Hydrolysis Of Wool Keratin , Mary Mildred Barr Jan 1936

Oxidation, Reduction And Hydrolysis Of Wool Keratin , Mary Mildred Barr

Retrospective Theses and Dissertations

The degradation of wool keratin by 0.25 to 7.87 N hydrochloric acid in 10 hours at 25°C and by 0.25 to 0.75 N hydrochloric acid in one hour at 100°C has been followed by weight, nitrogen, sulfur, and wet warp breaking strength of the residual keratin. Acid degradation has been shown to be much greater at 100°C than at 25°C, to remove little of the sulfur, and to decrease the wet strength more rapidly than the weight or nitrogen. The residual wool has been shown to decrease in nitrogen and increase slowly ...


The Oxidation, Reduction, And Hydrolyses Of Silk Fibroin , Eunice Chamberlin Walde Jan 1935

The Oxidation, Reduction, And Hydrolyses Of Silk Fibroin , Eunice Chamberlin Walde

Retrospective Theses and Dissertations

No abstract provided.