Change in structure of polypropylene during processes of fibre spinning by the high-speed method

1990 ◽  
Vol 21 (6) ◽  
pp. 508-511
Author(s):  
I. D'yachik ◽  
I. D'yachik ◽  
O. Dyurchova ◽  
M. Yambrikh
Keyword(s):  
High Speed ◽  
Fibre Spinning ◽  
Speed Method

Geometrical design of a crystal growth system guided by a machine learning algorithm

CrystEngComm ◽  
2021 ◽  
Author(s):  
Wancheng Yu ◽  
Can Zhu ◽  
Yosuke Tsunooka ◽  
Wei Huang ◽  
Yifan Dang ◽  
...  
Keyword(s):  
Machine Learning ◽  
Crystal Growth ◽  
High Speed ◽  
Learning Algorithm ◽  
Computational Techniques ◽  
Machine Learning Algorithm ◽  
Geometrical Design ◽  
Large Numbers ◽  
Growth System ◽  
Speed Method

This study proposes a new high-speed method for designing crystal growth systems. It is capable of optimizing large numbers of parameters simultaneously which is difficult for traditional experimental and computational techniques.

Advances in High-Speed Phosphor Printing

1987 ◽  
Vol 201 (2) ◽  
pp. 85-90 ◽  
Author(s):  
D Evans ◽  
C J Spicer
Keyword(s):  
High Speed ◽  
Optical Character ◽  
Printing System ◽  
Character Reading ◽  
Speed Method

The development of the optical character reading (OCR) machine for high-speed code marking and sortation of letter mail has led to the need for a high-speed method of printing the phosphorescent code marks used by the mechanised letter sorting machines. This paper looks at the requirements for the printing system, the method adopted and the results achieved.

High speed method for in situ multispectral image registration

2007 ◽  
Vol 70 (4) ◽  
pp. 382-389 ◽  
Author(s):  
Kenneth A. Perrine ◽  
Brian L. Lamarche ◽  
Derek F. Hopkins ◽  
Scott E. Budge ◽  
Lee K. Opresko ◽  
...  
Keyword(s):  
Image Registration ◽  
High Speed ◽  
Multispectral Image ◽  
Speed Method

High-Speed Method for Analyzing Shielding Current Density in High-Temperature Superconductor

2011 ◽  
Vol 47 (5) ◽  
pp. 1138-1141 ◽  
Author(s):  
Atsushi Kamitani ◽  
Teruou Takayama ◽  
Soichiro Ikuno
Keyword(s):  
High Temperature ◽  
Current Density ◽  
High Speed ◽  
High Temperature Superconductor ◽  
Speed Method

High-speed method of determining calcium oxide in dunite and forsterite

Refractories ◽  
1962 ◽  
Vol 3 (11-12) ◽  
pp. 424-424
Author(s):  
N. M. Bespalov
Keyword(s):  
Calcium Oxide ◽  
High Speed ◽  
Speed Method

A high speed method of SMTS

2012 ◽  
Vol 41 ◽  
pp. 64-71 ◽  
Author(s):  
Chuanfa Chen ◽  
Tianxiang Yue ◽  
Yanyan Li
Keyword(s):  
High Speed ◽  
Speed Method

A high-speed method for obtaining kinetic data for exothermic or endothermic catalytic reactions under non-isothermal conditions illustrated for the ammonia synthesis

2003 ◽  
Vol 240 (1-2) ◽  
pp. 95-110 ◽  
Author(s):  
Christian Liebner ◽  
Dorit Wolf ◽  
Manfred Baerns ◽  
Matthias Kolkowski ◽  
Frerich J Keil
Keyword(s):  
Kinetic Data ◽  
High Speed ◽  
Ammonia Synthesis ◽  
Catalytic Reactions ◽  
Isothermal Conditions ◽  
Speed Method

Stress Relaxation Measurement as a High-Speed Method for Predicting the Long-Term Behavior of Vulcanized Rubber

1983 ◽  
Vol 56 (1) ◽  
pp. 31-50 ◽  
Author(s):  
R. Clamroth ◽  
L. Ruetz
Keyword(s):  
Stress Relaxation ◽  
High Speed ◽  
Elevated Temperatures ◽  
Pure Oxygen ◽  
Relaxation Measurement ◽  
Hot Air ◽  
Vulcanized Rubber ◽  
Relaxation Measurements ◽  
The Times ◽  
Speed Method

Abstract Intermittent stress relaxation is well suited for quantifying aging processes in rubber. For NR, the effects of different antioxidants can be measured by the rates at which the modulus falls. In synthetic rubbers (SBR, NBR, and CR), it can be measured through the modulus increases caused by oxygen crosslinking. Equal-value times, e.g., t0.75 for NR and t1.25 for SBR, NBR, and CR, are the times taken by the modulus to decrease or increase to a given percentage of its original level. They are better measures of aging than the modulus change after a given time. For NR, it has been shown that stress relaxation measurements at elevated temperatures and in pure oxygen correlate with the results of conventional aging methods. Thus the testing times can be drastically reduced—from up to 28 days to 1–8 hours. Discontinuous stress relaxation measurements are considerably more accurate and selective than conventional oxygen aging. For the repeatability of a single equal-value time measurement, we obtained a coefficient of variation (s/x) of 5–10% for stress relaxation measurement and about ±20% for oxygen aging. The degree of selectivity for oxygen aging and stress relaxation was found to be 3.6 and 18, respectively. The correlation between the results of stress relaxation measurements and those of the conventional oxygen and hot air aging tests was investigated for a large number of NR compounds and for some SBR, NBR, and CR compounds. The correlation is not very good, but it must be remembered that the equal-value times determined according to the two methods show relatively pronounced variability. With the conventional aging methods, the results also depend on what quantity is measured, e.g., the change in tensile strength or hardness, and on what equal-value time is chosen, e.g., the time taken by the property concerned to decrease to 90 or 75% of its original value. The conclusion of the investigations described above is that intermittent modulus measurement is an interesting high-speed method for the assessment of aging behavior. It will acquire a firm position in the arsenal of rubber testing methods, but will probably supplement, and not completely replace, the aging methods currently used.

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