Effect of pH and the Role of N-Methylol Hydrolysis in Formaldehyde Release from Durable Press Fabric

1985 ◽  
Vol 55 (12) ◽  
pp. 766-773 ◽  
Author(s):  
Y.K. Kamath ◽  
S.B. Hornby ◽  
D. Bergeron ◽  
H.-D. Weigmann
Keyword(s):  
Effect Of Ph ◽  
Formaldehyde Release ◽  
Durable Press

scholarly journals The role of pH on the survival of rumen protozoa in steers

2010 ◽  
Vol 39 (10) ◽  
pp. 2262-2267 ◽  
Author(s):  
Raul Franzolin ◽  
Burk A. Dehority
Keyword(s):  
Experimental Period ◽  
Adaptation Period ◽  
Individual Animal ◽  
Effect Of Ph ◽  
Ph Values ◽  
Rumen Protozoa ◽  
Rumen Ph ◽  
Sampling Times ◽  
Ciliate Protozoa

In order to study the effect of pH on defaunation in the rumen, four rumen fistulated steers were fed a basal roughage diet for a 4-week adaptation period followed by 17 weeks of feeding with three diets and two feeding levels of high concentrate diet. Rumen outflow fluid rate was evaluated in both ration levels. Rumen protozoa population was monitored weekly and when animals became defaunated, protozoa were reinoculated with rumen contents from one of the faunated steers. At every two weeks, during all the experimental period, rumen pH was measured in all animals at 0, 4, 8 and 12 h after feeding. It was observed an individual animal influence on the establishment and maintenance of the rumen ciliate protozoa population. In all sampling times, mean rumen pH values were higher in faunated steers than in the defaunated ones. No differences were observed in rumen outflow fluid rates between the two ration levels. Extended periods of low rumen pH are probably more detrimental to the survival of ciliate protozoa in the rumen than other factors.

Effect of Condensation Temperature on Formaldehyde Release from Durable Press Fabrics

1988 ◽  
Vol 58 (9) ◽  
pp. 552-554 ◽  
Author(s):  
Drago Katovic ◽  
Ivo Soljacic
Keyword(s):  
Quantitative Difference ◽  
Condensation Temperature ◽  
Extraction Temperature ◽  
Slow Process ◽  
Formaldehyde Release ◽  
Durable Press

We investigated formaldehyde release from cotton and polyester/cotton materials treated with DMEU and DMDHEU resins at different condensation temperatures. In the samples treated with DMEU, the amount of free formaldehyde was greater at lower condensation temperatures. Samples treated with DMDHEU gave similar results when the AATCC method for determining formaldehyde was used, but when the MITI method was used, the condensation temperature-formaldehyde curves showed a minimum at about 140°C. The release of formaldehyde is a slow process, because both methods gave similar curves when longer extraction times were used. Changing the extraction temperature gave a quantitative difference.

Vapor Phase Sorption of Formaldehyde on Cotton and Its Role in Formaldehyde Release from Durable Press Cotton

1985 ◽  
Vol 55 (10) ◽  
pp. 589-597 ◽  
Author(s):  
Y.K. Kamath ◽  
R.U. Weber ◽  
S.B. Hornby ◽  
H.-D. Weigmann
Keyword(s):  
Vapor Phase ◽  
Formaldehyde Release ◽  
Durable Press

Variables That Influence Formaldehyde Release from Cottons Finished for Durable Press 1

1980 ◽  
Vol 50 (5) ◽  
pp. 315-322 ◽  
Author(s):  
B.A. Kottes Andrews ◽  
R.J. Harper ◽  
Sidney L. Vail
Keyword(s):  
Formaldehyde Release ◽  
Durable Press

The effect of pH and role of Ni 2+ in zinc phosphating of 2024-Al alloy

2006 ◽  
Vol 253 (2) ◽  
pp. 502-509 ◽  
Author(s):  
A.S. Akhtar ◽  
D. Susac ◽  
P.C. Wong ◽  
K.A.R. Mitchell
Keyword(s):  
Al Alloy ◽  
Effect Of Ph
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