Influence of Experimental Test Conditions on the Ni Release of a Cu-Ni Alloy in Artificial Sweat

2005 ◽  
pp. 243-248 ◽  
Author(s):  
C. Brugnoni ◽  
R. Bianchi ◽  
A. Bianchini ◽  
M.F. Stroosnijder
Keyword(s):  
Experimental Test ◽  
Test Conditions ◽  
Ni Alloy ◽  
Artificial Sweat

Design of an experimental test loop for fast spectrum test conditions

2021 ◽  
pp. 108438
Author(s):  
Daniel LaBrier ◽  
Ben Lilley ◽  
Anton Higgins ◽  
Ryan Stewart ◽  
Todd Palmer ◽  
...  
Keyword(s):  
Experimental Test ◽  
Test Conditions ◽  
Test Loop

scholarly journals The investigation on the middle period dephosphorization in 70t converter

2020 ◽  
Vol 39 (1) ◽  
pp. 567-575
Author(s):  
Deng Nanyang ◽  
Wang Haijun ◽  
Ling Haitao ◽  
Wang Jianjun
Keyword(s):  
Theoretical Calculation ◽  
Experimental Test ◽  
Limiting Factor ◽  
Molten Bath ◽  
Large Margin ◽  
Test Conditions ◽  
Middle Period ◽  
Slag Conditions ◽  
Dephosphorization Rate ◽  
Lance Position

AbstractAn experimental test is carried out on the 70t converter in Masteel to study the law of middle period dephosphorization in the smelting period. It is found that the dephosphorization rate is slow in the early and middle period of smelting and the content of the final P in steel cannot reach the standard due to the low oxidation of slag. The content of the final P in steel can be controlled within 0.02% by adding ore to the molten bath in the middle period and raising the lance position. The experimental test shows that the dephosphorization can still be achieved by a large margin if appropriate slag conditions are maintained in the middle period when the C and O reactions are strong. By theoretical calculation, it is concluded that the slag content should be controlled between 15 and 23%, and the basicity of slag should be between 2.5 and 2.8 in the middle period of production. Through the observation of experimental slag by SEM, it is found that the limiting factor of dephosphorization in the middle period under the test conditions is that the dephosphorization speed is too slow due to the low oxidation, rather than the solidification of phosphorus.

scholarly journals Surface Fouling in Aviation Fuels: An Isothermal Chemical Study

1995 ◽  
Author(s):  
E. Grant Jones ◽  
Walter J. Balster ◽  
James M. Pickard
Keyword(s):  
Experimental Test ◽  
Chemical Study ◽  
Aviation Fuel ◽  
Test Time ◽  
Tubular Heat Exchanger ◽  
Surface Deposition ◽  
Test Conditions ◽  
Aircraft Fuel ◽  
Dynamic Experiments ◽  
Selection Of

Surface fouling in aircraft fuel lines that results from autoxidation of aviation fuel remains a serious and very complicated problem. This area has been studied using two Jet-A fuels, POSF-2827 and POSF-2980. The results of a series of dynamic experiments conducted in a single-pass, tubular heat exchanger operated at very slow flow rates under near-isothermal conditions are reported herein. Such studies, by minimizing complications resulting from fluid dynamics and heat flow, constitute a simpler global approach to the chemistry of fouling. The basis for the selection of experimental test conditions is discussed, and data from measurements of dissolved oxygen and surface deposition as a function of fuel stress duration are presented. The effects of parameters such as reaction temperature, tube diameter, experimental test time, and fuel dopants are considered.

Surface Fouling in Aviation Fuels: An Isothermal Chemical Study

1996 ◽  
Vol 118 (2) ◽  
pp. 286-291 ◽  
Author(s):  
E. G. Jones ◽  
W. J. Balster ◽  
J. M. Pickard
Keyword(s):  
Experimental Test ◽  
Chemical Study ◽  
Aviation Fuel ◽  
Test Time ◽  
Tubular Heat Exchanger ◽  
Surface Deposition ◽  
Test Conditions ◽  
Aircraft Fuel ◽  
Dynamic Experiments ◽  
Selection Of

Surface fouling in aircraft fuel lines that results from autoxidation of aviation fuel remains a serious and very complicated problem. This area has been studied using two Jet-A fuels, POSF-2827 and POSF-2980. The results of a series of dynamic experiments conducted in a single-pass, tubular heat exchanger operated at very slow flow rates under near-isothermal conditions are reported herein. Such studies, by minimizing complications resulting from fluid dynamics and heat flow, constitute a simpler global approach to the chemistry of fouling. The basis for the selection of experimental test conditions is discussed, and data from measurements of dissolved oxygen and surface deposition as a function of fuel stress duration are presented. The effects of parameters such as reaction temperature, tube diameter, experimental test time, and fuel dopants are considered.

L2 AND DEAF LEARNERS’ KNOWLEDGE OF NUMERICALLY QUANTIFIED ENGLISH SENTENCES

2012 ◽  
Vol 34 (1) ◽  
pp. 35-66 ◽  
Author(s):  
Gerald P. Berent ◽  
Ronald R. Kelly ◽  
Tanya Schueler-Choukairi
Keyword(s):  
Second Language ◽  
Experimental Test ◽  
Universal Grammar ◽  
Noun Phrases ◽  
Target Language ◽  
Semantic Interpretation ◽  
Scalar Implicatures ◽  
Restricted Access ◽  
Test Conditions ◽  
Pragmatic Knowledge

This study assessed knowledge of numerically quantified English sentences in two learner populations—second language (L2) learners and deaf learners—whose acquisition of English occurs under conditions of restricted access to the target language input. Under the experimental test conditions, interlanguage parallels were predicted to arise from acquisitional pressures imposed by derivational economy on universal grammar (UG)–guided semantic interpretation. The results of a task in which participants matched sentences to multiple discourse depictions confirmed the predicted parallels. However, in matching underinformative sentences to depicted contexts, the L2 and deaf learner groups overactivated discourse-pragmatic knowledge. The restriction of indefinite noun phrases to singleton indefinites and the cancellation of scalar implicatures rendered sentences more informative in underinformative contexts, producing incorrect—although principled—interpretations. These results inform English acquisition at the interface of semantics and discourse pragmatics and provide further support that economy pressures yield L2 learner and deaf learner interlanguage parallels as observed, for instance, in learners’ interpretative knowledge of universally quantified English sentences.

scholarly journals The Effects of dual task (fine motor precision + cognitive charge) on proprioception

2020 ◽  
Vol 5 (1) ◽  
pp. 79-86
Author(s):  
Liudmila Liutsko ◽  
Jose Maria Tous ◽  
Sergi Segura
Keyword(s):  
Nervous System ◽  
Experimental Test ◽  
Dual Task ◽  
Cognitive Task ◽  
Line Length ◽  
Fine Motor ◽  
Motor Behaviour ◽  
Test Conditions ◽  
Preliminary Study ◽  
The Given

The aim of the given preliminary study was to check whether any changes in fi ne motor behaviour exist in switching from single to double task (with cognition charge) in proprioceptive sensory graphomotor test conditions. Ten students (fi ve males and fi ve females), aged from 20 to 30 years old, took part in the experiment - precision of tracking of the models in both experimental test conditions: without and with cognitive task (counting numbers back). The variables for assessment were obtained with use of the digitalized proprioceptive diagnostics (Tous, 2008; Tous, J.M., Muiños, Tous, O., & Tous J, 2012) of Mira y Lopez laboratory (University of Barcelona) that transformed the measurements of drawn lines on a touch screen from pixels into millimetres. As results showed, in the proprioceptive test condition, the changes in deviations related to spatial (lineograms) or line length variability (parallels) did not reach any statistical signifi cance; while the changes in line length performance (lineograms) were found signifi cant (that corresponds to inhibition- -excitatory balance of nervous system).

Effects of Fundamental Frequency Contours on Sentence Recognition in Mandarin-Speaking Children With Cochlear Implants

2020 ◽  
Vol 63 (11) ◽  
pp. 3855-3864
Author(s):  
Wanting Huang ◽  
Lena L. N. Wong ◽  
Fei Chen ◽  
Haihong Liu ◽  
Wei Liang
Keyword(s):  
Cochlear Implants ◽  
Fundamental Frequency ◽  
Signal To Noise Ratio ◽  
Lexical Tone ◽  
Signal To Noise ◽  
Sentence Recognition ◽  
Test Conditions ◽  
Age Appropriate ◽  
F0 Contour ◽  
Appropriate Sentences

Purpose Fundamental frequency (F0) is the primary acoustic cue for lexical tone perception in tonal languages but is processed in a limited way in cochlear implant (CI) systems. The aim of this study was to evaluate the importance of F0 contours in sentence recognition in Mandarin-speaking children with CIs and find out whether it is similar to/different from that in age-matched normal-hearing (NH) peers. Method Age-appropriate sentences, with F0 contours manipulated to be either natural or flattened, were randomly presented to preschool children with CIs and their age-matched peers with NH under three test conditions: in quiet, in white noise, and with competing sentences at 0 dB signal-to-noise ratio. Results The neutralization of F0 contours resulted in a significant reduction in sentence recognition. While this was seen only in noise conditions among NH children, it was observed throughout all test conditions among children with CIs. Moreover, the F0 contour-induced accuracy reduction ratios (i.e., the reduction in sentence recognition resulting from the neutralization of F0 contours compared to the normal F0 condition) were significantly greater in children with CIs than in NH children in all test conditions. Conclusions F0 contours play a major role in sentence recognition in both quiet and noise among pediatric implantees, and the contribution of the F0 contour is even more salient than that in age-matched NH children. These results also suggest that there may be differences between children with CIs and NH children in how F0 contours are processed.

Top-Down Processing and Visual Reorientation Illusions in a Virtual Reality Environment

2004 ◽  
Vol 63 (3) ◽  
pp. 143-149 ◽  
Author(s):  
Fred W. Mast ◽  
Charles M. Oman
Keyword(s):  
Virtual Reality ◽  
Visual Processing ◽  
Line Length ◽  
Perceptual Cues ◽  
Virtual Reality Environment ◽  
Top Down ◽  
Test Conditions ◽  
The Subject ◽  
Processing Mechanisms

The role of top-down processing on the horizontal-vertical line length illusion was examined by means of an ambiguous room with dual visual verticals. In one of the test conditions, the subjects were cued to one of the two verticals and were instructed to cognitively reassign the apparent vertical to the cued orientation. When they have mentally adjusted their perception, two lines in a plus sign configuration appeared and the subjects had to evaluate which line was longer. The results showed that the line length appeared longer when it was aligned with the direction of the vertical currently perceived by the subject. This study provides a demonstration that top-down processing influences lower level visual processing mechanisms. In another test condition, the subjects had all perceptual cues available and the influence was even stronger.

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