Laboratory Studies and Field Evaluation of a New Gelant for High-Temperature Profile Modification

Author(s):  
P.W. Chang ◽  
I.M. Goldman ◽  
K.J. Stingley
1999 ◽  
Vol 13 (3) ◽  
pp. 530-535 ◽  
Author(s):  
Zhaohu Li ◽  
Robert H. Walker ◽  
Glenn Wehtje ◽  
H. Gary Hancock

Hypocotyl and root length reduction of soybean (Glycine max) seedlings when seeds were exposed to sulfentrazone during germination were used as indices to classify cultivar response to soil-applied sulfentrazone. Seeds of ‘Stonewall’ (sulfentrazone tolerant) and ‘Asgrow 6785’ (sulfentrazone sensitive) were imbibed and allowed to germinate in 0, 1, 5, 10, and 50 ppm aqueous sulfentrazone solutions for 4 d. Hypocotyl and root lengths were reduced in both cultivars, but the reductions were greater for Asgrow 6785 than for Stonewall. Subsequently, the relative sensitivity of 28 cultivars to sulfentrazone was independently determined by two variations of the hypocotyl reduction method (both conducted in the laboratory) and by traditional full-season field evaluation. Results from laboratory and field studies were in agreement for cultivars distinctly sensitive or tolerant to sulfentrazone. However, cultivars with intermediate tolerance in laboratory studies produced variable responses in the field.


2011 ◽  
Vol 71-78 ◽  
pp. 2513-2517 ◽  
Author(s):  
Xiao Xiong Zha ◽  
Shan Shan Cheng

In order for current laboratory studies of strata performances under high temperature to be applied in Underground Coal Gasification (UCG) technology, the temperature scope (range) of UCG must be studied. Based on the heat conduction differential equation, this paper simulates the transverse section temperature distribution of UCG in the multi-physics coupling field. It demonstrates that the strata properties at a range of two meters are affected by high temperature, and the influence on sandstone is more obvious than that of coal. The temperature curves show a trend of linear to nonlinear as time goes. This paper presents the precedent of using multi-field coupling calculation to simulate UCG.


2018 ◽  
Author(s):  
Maura C. Puerto ◽  
Jose Luis Lopez-Salinas ◽  
Guoqing Jian ◽  
George J. Hirasaki ◽  
Clarence A. Miller

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5769
Author(s):  
Yiwen Zou ◽  
Guangwei Yang ◽  
Wanqing Huang ◽  
Yang Lu ◽  
Yanjun Qiu ◽  
...  

Pavement micro- and macro-texture have significant effects on roadway friction and driving safety. The influence of traffic polish on pavement texture has been investigated in many laboratory studies. This paper conducts field evaluation of pavement micro- and macro-texture under actual traffic polishing using three-dimensional (3D) areal parameters. A portable high-resolution 3D laser scanner measured pavement texture from a field site in 2018, 2019, and 2020. Then, the 3D texture data was decomposed to micro- and macro-texture using Fourier transform and Butterworth filter methods. Twenty 3D areal parameters from five categories, including height, spatial, hybrid, function, and feature parameters, were calculated to characterize pavement micro- and macro-texture. The results demonstrate that the 3D areal parameters provide an alternative to comprehensively characterize the evolution of pavement texture under traffic polish from different aspects.


2018 ◽  
Vol 102 (1-2) ◽  
pp. 113-121
Author(s):  
Juan C. Rosas ◽  
James S. Beaver ◽  
Consuelo Estévez de Jensen ◽  
Abiezer González ◽  
Daniel Rocha-Clavijo ◽  
...  

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