scholarly journals Analytical determination of load resistance value for MQ-series gas sensors: MQ-6 as case study

2021 ◽  
Vol 19 (2) ◽  
pp. 575
Author(s):  
Ajiboye A. T. ◽  
Opadiji J. F. ◽  
Yusuf A. O. ◽  
Popoola J. O.
Keyword(s):  
Gas Sensors ◽  
Load Resistance ◽  
Analytical Determination ◽  
Resistance Value

scholarly journals Analytical determination of the availability of a rotary excavator as a part of coal mining system: Case study: Rotary excavator SchRs 800.15/1.5 of the Drmno open pit

2020 ◽  
pp. 25-36
Author(s):  
Uglješa Bugarić ◽  
Miloš Tanasijević ◽  
Miljan Gomilanović ◽  
Andrija Petrović ◽  
Miloš Ilić
Keyword(s):  
Working Conditions ◽  
Analytical Methods ◽  
Essential Elements ◽  
Open Pit ◽  
Analytical Determination ◽  
Rotary Excavator ◽  
Mining System ◽  
System Maintenance

Rotary excavators as the basic machines at the open pits of lignite operate in very difficult working conditions, where they are constantly expected to be highly productive, reliable, available and safe as the production carriers. Determining the availability as well as the duration and number of failures using the analytical methods allows to analyze the key influencing factors on their occurrence and values of these parameters and to determine the essential elements of system maintenance and management in order to optimize them.

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.

Analytical Determination of Torch Characteristics of Rotary Kiln Burners

2020 ◽  
Vol 50 (5) ◽  
pp. 347-350
Author(s):  
G. M. Druzhinin ◽  
N. B. Loshkarev ◽  
E. D. Solntseva ◽  
I. M. Khammatov
Keyword(s):  
Rotary Kiln ◽  
Analytical Determination
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