Photoelectric pyrometer for measuring the temperature in the molding nozzle when producing quartz tubes

1970 ◽  
Vol 27 (3) ◽  
pp. 179-180
Author(s):  
I. P. Ermolaev ◽  
M. P. Nikonov ◽  
V. G. Kharazov
Keyword(s):  
Photoelectric Pyrometer ◽  
Quartz Tubes

APPLICATION OF ESR TO HIGH-Tc SUPERCONDUCTORS AND RELATED MATERIALS IV: ALKALI K DOPING EFFECTS ON THE SUPERCONDUCTING CHARACTERISTICS OF K3C60

1999 ◽  
Vol 13 (02) ◽  
pp. 59-69
Author(s):  
K. SUGAWARA ◽  
N. OHYA ◽  
N. ARAI ◽  
S. ICHIMURA ◽  
K. YAMAMOTO ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Calcination Temperature ◽  
Volume Fraction ◽  
Superconducting Properties ◽  
High Tc Superconductors ◽  
High Tc ◽  
Doping Effects ◽  
Superconducting Volume Fraction ◽  
Vortex Size ◽  
Quartz Tubes

Several samples of K 3 C 60 have been made by the calcination of C 60 powder plus K flakes in evacuated quartz tubes at temperatures between 100°C and 700°C for 24 hours. The non-resonant microwave absorption (NRMA) measurements have been done below T c for these samples. From the linewidths and intensities of the NRMA signals, the superconducting properties (T c superconducting volume fraction and vortex size) have been studied as a function of the calcination temperature.

Research on the Nonlinearity of Photoelectric Pyrometer Based on Light-Emitting Diode Light Sources

2010 ◽  
Vol 30 (8) ◽  
pp. 2412-2416 ◽  
Author(s):  
董伟 Dong Wei ◽  
原遵东 Yuan Zundong ◽  
卢小丰 Lu Xiaofeng
Keyword(s):  
Light Emitting Diode ◽  
Light Sources ◽  
Light Emitting ◽  
Photoelectric Pyrometer

PYROLYSIS OF THE LOWER PARAFFINS: II. THE PRODUCTION OF OLEFINES IN BAFFLED QUARTZ TUBES

1933 ◽  
Vol 9 (2) ◽  
pp. 175-196 ◽  
Author(s):  
Adrien Cambron ◽  
Colin H. Bayley
Keyword(s):  
High Temperature ◽  
Turbulent Flow ◽  
Gas Flow ◽  
Side Reactions ◽  
Open Tube ◽  
High Degree ◽  
Quartz Tubes

The pyrolysis of the lower paraffins in externally heated quartz tubes has been studied under conditions of streamline and turbulent flow. It has been found possible to produce a high degree of turbulence in the flow of paraffin gases through tubes heated to a high temperature. It has been shown that when the pyrolysis is carried out under conditions of turbulent flow the yields of olefines obtained at a given temperature are greatly increased over those obtained in an open tube. It is further shown that under conditions of turbulent flow higher rates of conversion of the lower paraffins to olefines are possible since the temperatures at which side reactions begin to be noticeable are considerably higher under the above conditions than when the gas flow is streamline.

Rational use of graphite in the production of quartz tubes

1973 ◽  
Vol 30 (12) ◽  
pp. 864-865
Author(s):  
R. S. Zolotareva ◽  
V. N. Ruslov ◽  
V. A. Kostyrya ◽  
A. M. Moskalenko
Keyword(s):  
Rational Use ◽  
Quartz Tubes

Rubber. XVth Communication. The Polymerization of Rubber, Isoprene, and Styrene by Light in the Presence of Sensitizing Agents

1934 ◽  
Vol 7 (1) ◽  
pp. 184-196
Author(s):  
Rudolf Pummerer ◽  
Hans Kehlen
Keyword(s):  
Ultra Violet ◽  
Molecular Size ◽  
Ultra Violet Light ◽  
Violet Light ◽  
Quartz Tubes

Abstract Although according to Bernstein, exposure of rubber solutions to light in the absence of air diminishes the viscosity of the solutions, it is the conviction of the present authors that this change takes place only when there is air over the solutions. In 1920 Porritt observed that a rubber solution sealed off from contact with air gelatinized on exposure to light. Kirchhof however found this to be true only with small quantities of rubber solutions in quartz tubes exposed to ultra-violet light. This reaction was of particular interest to the present authors because of its possible relation to the vulcanization reaction, which can be regarded as an increase in molecular size, and as the formation of chains of rubber molecules with and without sulfur. Irradiation is perhaps an effect similar to vulcanization, but is brought about by polymerizations. It was also of interest to compare irradiated and gelatinized sol rubber with gel rubber. All the experiments described in the present paper were carried out with water-clear sol rubber, which was prepared in most cases from crepe.

A photoelectric pyrometer

1974 ◽  
Vol 17 (10) ◽  
pp. 1552-1553
Author(s):  
V. M. Il'in
Keyword(s):  
Photoelectric Pyrometer
Sign in / Sign up

Export Citation Format

Share Document