Experimental load distributions for double pitch steel roller chains on steel sprockets

1984 ◽  
Vol 19 (6) ◽  
pp. 449-457 ◽  
Author(s):  
Bahir H. Eldiwany ◽  
Kurt M. Marshek
Keyword(s):  
Steel Roller ◽  
Load Distributions

scholarly journals Estimating epidemiologic dynamics from cross-sectional viral load distributions

Science ◽  
2021 ◽  
pp. eabh0635
Author(s):  
James A. Hay ◽  
Lee Kennedy-Shaffer ◽  
Sanjat Kanjilal ◽  
Niall J. Lennon ◽  
Stacey B. Gabriel ◽  
...  
Keyword(s):  
Population Distribution ◽  
Quantitative Polymerase Chain Reaction ◽  
Cross Sectional ◽  
Outbreak Management ◽  
Viral Loads ◽  
Time Estimates ◽  
Load Distributions ◽  
Random Samples ◽  
Combining Data ◽  
Polymerase Chain

Estimating an epidemic’s trajectory is crucial for developing public health responses to infectious diseases, but case data used for such estimation are confounded by variable testing practices. We show that the population distribution of viral loads observed under random or symptom-based surveillance, in the form of cycle threshold (Ct) values obtained from reverse-transcription quantitative polymerase chain reaction testing, changes during an epidemic. Thus, Ct values from even limited numbers of random samples can provide improved estimates of an epidemic’s trajectory. Combining data from multiple such samples improves the precision and robustness of such estimation. We apply our methods to Ct values from surveillance conducted during the SARS-CoV-2 pandemic in a variety of settings and offer alternative approaches for real-time estimates of epidemic trajectories for outbreak management and response.

Influence of coating thickness on rolling contact fatigue of alumina ceramics thermally sprayed on steel roller

2006 ◽  
Vol 39 (11) ◽  
pp. 1447-1453 ◽  
Author(s):  
Masahiro Fujii ◽  
Jiabin Ma ◽  
Akira Yoshida ◽  
Sadato Shigemura ◽  
Kazumi Tani
Keyword(s):  
Coating Thickness ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Alumina Ceramics ◽  
Steel Roller ◽  
Thermally Sprayed

scholarly journals Surface Durability of Tufftrided Steel Roller

1982 ◽  
Vol 25 (199) ◽  
pp. 127-133
Author(s):  
Komei FUJITA ◽  
Akira YOSHIDA ◽  
Mikio TAKADA
Keyword(s):  
Steel Roller ◽  
Surface Durability

Research on Hardening the Surface of Laser and Anti-Tempering Property of Cast Steel Hot Roller

2008 ◽  
Vol 33-37 ◽  
pp. 1359-1364
Author(s):  
Qiao Yu Xu ◽  
Kalbinur Ahmat ◽  
Xiang Liu
Keyword(s):  
High Temperature ◽  
Laser Treatment ◽  
Cast Steel ◽  
Water Quenching ◽  
Steel Roller ◽  
Hardened Zone

Fine martensite could be gained in 70Mn2Mo cast steel roller after solidification by laser treatment. The hardness and depth of hardened zone reached 920 HV (about 65HRC) and 0.6mm respectively. After tempered in high temperature, the depth of hardened zone whose hardness was maintained above 430HV was 0.4mm. These results showed the better anti-tempering property and the higher hardness and hardened depth compared with water quenching and implied the greater applied potentiality of laser strengthening.

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