Radiation stability of high test peroxide (HTP)

2021 ◽  
Vol 183 ◽  
pp. 109399
Author(s):  
Wojciech Głuszewski ◽  
Natalia Okroj
Keyword(s):  
Radiation Stability ◽  
High Test

Tire Treadwear — A Comprehensive Evaluation of the Factors: Generic Type, Aspect Ratio, Tread Pattern, and Tread Composition Part III: Results of Supplementary and UTQG Treadwear Test Series

1986 ◽  
Vol 14 (4) ◽  
pp. 235-263
Author(s):  
A. G. Veith
Keyword(s):  
Carbon Black ◽  
Comprehensive Evaluation ◽  
Work Intensity ◽  
Generic Type ◽  
Aspect Ratios ◽  
Index Variation ◽  
Primary Determinant ◽  
Severity Levels ◽  
High Test ◽  
Better Than

Abstract The effect of tread compound variation on tire treadwear was studied using bias and radial tires of two aspect ratios. Compound variations included types of rubber and carbon black as well as the levels of carbon black, process oil, and curatives. At low to moderate test severity, SBR and an SBR/BR blend performed better than NR while at high test severity NR and SBR were better than the SBR/BR blend. The SBR/BR blend was the best at low severity testing. Higher structure and higher surface area carbon black gave improved treadwear at all severity levels. The concept of a “frictional work intensity” as the primary determinant of treadwear index variation with test severity is proposed. Some factors which influence frictional work intensity are discussed.

scholarly journals Healthy decisions in the cued-attribute food choice paradigm have high test-retest reliability

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zahra Barakchian ◽  
Anjali Raja Beharelle ◽  
Todd A. Hare
Keyword(s):  
Food Choice ◽  
Food Choices ◽  
Retest Reliability ◽  
Individual Level ◽  
Food Items ◽  
Intervention Efficacy ◽  
The Individual ◽  
Test Retest Reliability ◽  
Decision Mechanisms ◽  
High Test

AbstractFood choice paradigms are commonly used to study decision mechanisms, individual differences, and intervention efficacy. Here, we measured behavior from twenty-three healthy young adults who completed five repetitions of a cued-attribute food choice paradigm over two weeks. This task includes cues prompting participants to explicitly consider the healthiness of the food items before making a selection, or to choose naturally based on whatever freely comes to mind. We found that the average patterns of food choices following both cue types and ratings about the palatability (i.e. taste) and healthiness of the food items were similar across all five repetitions. At the individual level, the test-retest reliability for choices in both conditions and healthiness ratings was excellent. However, test-retest reliability for taste ratings was only fair, suggesting that estimates about palatability may vary more from day to day for the same individual.

scholarly journals Tailoring the electron and hole dimensionality to achieve efficient and stable metal halide perovskite scintillators

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Zhifang Tan ◽  
Jincong Pang ◽  
Guangda Niu ◽  
Jun-Hui Yuan ◽  
Kan-Hao Xue ◽  
...  
Keyword(s):  
Water Solubility ◽  
Radiation Stability ◽  
Metal Halide ◽  
Lead Free ◽  
X Ray ◽  
Metal Halide Perovskite ◽  
Bonding Interaction ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Low X

Abstract Metal halide perovskites have recently been reported as excellent scintillators for X-ray detection. However, perovskite based scintillators are susceptible to moisture and oxygen atmosphere, such as the water solubility of CsPbBr3, and oxidation vulnerability of Sn2+, Cu+. The traditional metal halide scintillators (NaI: Tl, LaBr3, etc.) are also severely restricted by their high hygroscopicity. Here we report a new kind of lead free perovskite with excellent water and radiation stability, Rb2Sn1-x Te x Cl6. The equivalent doping of Te could break the in-phase bonding interaction between neighboring octahedra in Rb2SnCl6, and thus decrease the electron and hole dimensionality. The optimized Te content of 5% resulted in high photoluminescence quantum yield of 92.4%, and low X-ray detection limit of 0.7 µGyair s−1. The photoluminescence and radioluminescence could be maintained without any loss when immersing in water or after 480,000 Gy radiations, outperforming previous perovskite and traditional metal halides scintillators.

The bond between science and industry—A high-test alloy

2000 ◽  
Vol 36 (5) ◽  
pp. 272-274
Author(s):  
V. A. Yasashin ◽  
D. Yu. Serikov ◽  
N. G. Makarov
Keyword(s):  
High Test

Synthesis and Radiation Stability of Some New Biologically Active Hydroquinoline and Pyrimido[4,5-b]quinoline Derivatives

2005 ◽  
Vol 52 (6) ◽  
pp. 1227-1236 ◽  
Author(s):  
S. M. Abdel-Gawad ◽  
M. S. A. El-Gaby ◽  
H. I. Heiba ◽  
H. M. Aly ◽  
M. M. Ghorab
Keyword(s):  
Radiation Stability ◽  
Biologically Active ◽  
Quinoline Derivatives

Test anxiety, evaluative stress, and susceptibility to distraction from threat

2001 ◽  
Vol 15 (2) ◽  
pp. 123-141 ◽  
Author(s):  
Edmund Keogh ◽  
Christopher C. French
Keyword(s):  
Test Anxiety ◽  
Educational Practice ◽  
Focused Attention ◽  
Attentional Resources ◽  
Specific Trait ◽  
Selective Search ◽  
Task Irrelevant ◽  
High Test ◽  
Specific Susceptibility

Examinations are perhaps one of the main methods of assessment in education. Unfortunately, there are some individuals who are so fearful of such events that performance is impaired. Test anxiety is believed to be the trait that predisposes individuals to react negatively to examinations and tests. One way in which it is believed that test anxiety affects performance is by increasing susceptibility to distraction from task‐irrelevant material. However, few studies have directly investigated this impairment. An experiment was therefore conducted to investigate susceptibility to distraction in high and low test‐anxious students. The task used was based on one developed by Mathews, May, Mogg and Eysenck (1990), which distinguishes between focused attention and selective search. In order to determine whether a specific susceptibility to distraction exists, the distractors were varied in terms of valence and relevance to examinations. Since test anxiety is a situation‐specific trait, an evaluation‐related stressor was used to trigger test‐anxious reactions. A specific susceptibility to distraction from threat was found amongst high test‐anxious participants who received the evaluation‐related stressor. However, this effect was only found when participants were using focused attention. This suggests that the disturbed performance often found to be associated with test anxiety might be due to an inability to ignore threatening material when attempting to focus attentional resources. These results are discussed in light of current theories of test anxiety and implications for educational practice. Copyright © 2001 John Wiley & Sons, Ltd.

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