Extension of the Low Pressure Range of the Ionization Gauge

1950 ◽  
Vol 21 (6) ◽  
pp. 571-572 ◽  
Author(s):  
Robert T. Bayard ◽  
Daniel Alpert
Keyword(s):  
Pressure Range ◽  
Low Pressure ◽  
Ionization Gauge

Dynamic Viscosity of Compressed Water to 10 Kilobar and Steam to 1500°C

1969 ◽  
Vol 11 (2) ◽  
pp. 189-205 ◽  
Author(s):  
E. A. Bruges ◽  
M. R. Gibson
Keyword(s):  
Gaseous Phase ◽  
Dynamic Viscosity ◽  
Low Temperatures ◽  
Pressure Range ◽  
Low Pressure ◽  
Temperature Range ◽  
Inversion Temperature ◽  
Pressure Steam ◽  
Correlating Equations ◽  
First Time

Equations specifying the dynamic viscosity of compressed water and steam are presented. In the temperature range 0-100cC the location of the inversion locus (mu) is defined for the first time with some precision. The low pressure steam results are re-correlated and a higher inversion temperature is indicated than that previously accepted. From 100 to 600°C values of viscosity are derived up to 3·5 kilobar and between 600 and 1500°C up to 1 kilobar. All the original observations in the gaseous phase have been corrected to a consistent set of densities and deviation plots for all the new correlations are given. Although the equations give values within the tolerances of the International Skeleton Table it is clear that the range and tolerances of the latter could with some advantage be revised to give twice the existing temperature range and over 10 times the existing pressure range at low temperatures. A list of the observations used and their deviations from the correlating equations is available as a separate publication.

Unprecedented CO2 adsorption behaviour by 5A-type zeolite discovered in lower pressure region and at 300 K

2021 ◽  
Author(s):  
Akira Oda ◽  
Suguru Hiraki ◽  
Eiji Harada ◽  
Ikuka Kobayashi ◽  
Takahiro Ohkubo ◽  
...  
Keyword(s):  
Pressure Range ◽  
Co2 Adsorption ◽  
Low Pressure ◽  
Lower Pressure ◽  
Dft Studies ◽  
Adsorption Behaviour ◽  
Zeolite Sample ◽  
Pressure Region ◽  
Type Zeolite ◽  
Efficient Adsorbent

The NaCaA-85 zeolite sample which works as an efficient adsorbent for CO2 at RT and in low pressure range was found and its specificity is nicely explained by the model composed of CO2 pinned by two types of Ca2+ ions through far-IR and DFT studies.

scholarly journals An ICR Study of an Association Reaction at Low Pressure

1980 ◽  
Vol 87 ◽  
pp. 305-306
Author(s):  
M.J. Mcewan ◽  
V. G. Anicich ◽  
W.T. Huntress ◽  
P. R. Kemperer ◽  
M. T. Bowers
Keyword(s):  
Pressure Range ◽  
Rate Coefficient ◽  
Low Pressure ◽  
Second Order ◽  
Radiative Association ◽  
Association Reaction

An ICR investigation of the association reactionCH3+ + HCN CH3.HCN+has shown the reaction follows second order kinetics over the pressure range 1 × 10-6 to 3 × 10-4 Torr with a rate coefficient of 2 × 10-10 cm3s-1. These results can be interpreted in terms of a saturated 3-body or radiative association mechanism.

Application of Pressure-Sensitive Paints to Low-Pressure Range

2005 ◽  
Vol 19 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Tomohide Niimi ◽  
Masaki Yoshida ◽  
Makoto Kondo ◽  
Yusuke Oshima ◽  
Hideo Mori ◽  
...  
Keyword(s):  
Pressure Range ◽  
Low Pressure ◽  
Pressure Sensitive

A Low Pressure Ionization Gauge

1969 ◽  
Vol 40 (12) ◽  
pp. 1552-1554
Author(s):  
D. L. Swingler
Keyword(s):  
Low Pressure ◽  
Ionization Gauge

Optimum pressure range evaluation toward aerodynamic measurements using PSP in low-pressure conditions

2020 ◽  
Vol 31 (8) ◽  
pp. 085303 ◽  
Author(s):  
Takayuki Nagata ◽  
Miku Kasai ◽  
Tomohiro Okudera ◽  
Hitomi Sato ◽  
Taku Nonomura ◽  
...  
Keyword(s):  
Pressure Range ◽  
Low Pressure ◽  
Optimum Pressure

Facile synthesis of carbon-based nanoporous adsorbent exhibiting high ammonia uptake under low pressure range

2020 ◽  
Vol 307 ◽  
pp. 110460
Author(s):  
Kanghee Cho ◽  
Hyung Chul Yoon ◽  
Hee Tae Beum ◽  
Sun Hyung Kim ◽  
Chan Hyun Lee ◽  
...  
Keyword(s):  
Pressure Range ◽  
Low Pressure ◽  
Facile Synthesis ◽  
Ammonia Uptake ◽  
High Ammonia ◽  
Carbon Based

scholarly journals Highly-Sensitive Textile Pressure Sensors Enabled by Suspended-Type All Carbon Nanotube Fiber Transistor Architecture

Micromachines ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1103
Author(s):  
Jae Sang Heo ◽  
Keon Woo Lee ◽  
Jun Ho Lee ◽  
Seung Beom Shin ◽  
Jeong Wan Jo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Pressure Sensor ◽  
Pressure Range ◽  
Pressure Sensors ◽  
High Sensitivity ◽  
Low Pressure ◽  
Electronic Textiles ◽  
Carbon Nanotube Fiber ◽  
Cnt Fiber ◽  
Walled Carbon Nanotubes

Among various wearable health-monitoring electronics, electronic textiles (e-textiles) have been considered as an appropriate alternative for a convenient self-diagnosis approach. However, for the realization of the wearable e-textiles capable of detecting subtle human physiological signals, the low-sensing performances still remain as a challenge. In this study, a fiber transistor-type ultra-sensitive pressure sensor (FTPS) with a new architecture that is thread-like suspended dry-spun carbon nanotube (CNT) fiber source (S)/drain (D) electrodes is proposed as the first proof of concept for the detection of very low-pressure stimuli. As a result, the pressure sensor shows an ultra-high sensitivity of ~3050 Pa−1 and a response/recovery time of 258/114 ms in the very low-pressure range of <300 Pa as the fiber transistor was operated in the linear region (VDS = −0.1 V). Also, it was observed that the pressure-sensing characteristics are highly dependent on the contact pressure between the top CNT fiber S/D electrodes and the single-walled carbon nanotubes (SWCNTs) channel layer due to the air-gap made by the suspended S/D electrode fibers on the channel layers of fiber transistors. Furthermore, due to their remarkable sensitivity in the low-pressure range, an acoustic wave that has a very tiny pressure could be detected using the FTPS.

Static expansion vacuum standard with extended low pressure range

MAPAN ◽  
2009 ◽  
Vol 24 (2) ◽  
pp. 95-100 ◽  
Author(s):  
Detian Li ◽  
Guangping Zhao ◽  
Meiru Guo ◽  
Jie Xu ◽  
Yongjun Cheng
Keyword(s):  
Pressure Range ◽  
Low Pressure
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