A Novel Method for Determination of Dielectric Properties of Materials Using a Combined Embedded Modulated Scattering and Near-Field Microwave Techniques—Part I: Forward Model

2005 ◽  
Vol 54 (6) ◽  
pp. 2389-2397 ◽  
Author(s):  
D. Hughes ◽  
R. Zoughi
Keyword(s):  
Dielectric Properties ◽  
Near Field ◽  
Forward Model ◽  
Novel Method ◽  
Properties Of Materials ◽  
Microwave Techniques

A novel method to measure dielectric properties of materials in terahertz spectroscopy

Optik ◽  
2013 ◽  
Vol 124 (20) ◽  
pp. 4085-4088 ◽  
Author(s):  
Wei-en Lai ◽  
Huai-wu Zhang ◽  
Yao-hua Zhu ◽  
Qi-ye Wen
Keyword(s):  
Dielectric Properties ◽  
Terahertz Spectroscopy ◽  
Novel Method ◽  
Properties Of Materials

A novel method for the determination of linting propensity of paper

TAPPI Journal ◽  
2012 ◽  
Vol 11 (10) ◽  
pp. 9-17
Author(s):  
ALESSANDRA GERLI ◽  
LEENDERT C. EIGENBROOD
Keyword(s):  
Ash Content ◽  
The Novel ◽  
Offset Printing ◽  
Excellent Correlation ◽  
End Conditions ◽  
Bottom Side ◽  
Novel Method ◽  
Total Fraction

A novel method was developed for the determination of linting propensity of paper based on printing with an IGT printability tester and image analysis of the printed strips. On average, the total fraction of the surface removed as lint during printing is 0.01%-0.1%. This value is lower than those reported in most laboratory printing tests, and more representative of commercial offset printing applications. Newsprint paper produced on a roll/blade former machine was evaluated for linting propensity using the novel method and also printed on a commercial coldset offset press. Laboratory and commercial printing results matched well, showing that linting was higher for the bottom side of paper than for the top side, and that linting could be reduced on both sides by application of a dry-strength additive. In a second case study, varying wet-end conditions were used on a hybrid former machine to produce four paper reels, with the goal of matching the low linting propensity of the paper produced on a machine with gap former configuration. We found that the retention program, by improving fiber fines retention, substantially reduced the linting propensity of the paper produced on the hybrid former machine. The papers were also printed on a commercial coldset offset press. An excellent correlation was found between the total lint area removed from the bottom side of the paper samples during laboratory printing and lint collected on halftone areas of the first upper printing unit after 45000 copies. Finally, the method was applied to determine the linting propensity of highly filled supercalendered paper produced on a hybrid former machine. In this case, the linting propensity of the bottom side of paper correlated with its ash content.

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