Effect of initial temperature on combustion rate of ballistic powders in the high pressure range

1990 ◽  
Vol 26 (4) ◽  
pp. 409-413
Author(s):  
Yu. G. Shepelev ◽  
A. E. Fogel'zang ◽  
A. P. Denisyuk ◽  
A. E. Demidov
Keyword(s):  
High Pressure ◽  
Combustion Rate ◽  
Pressure Range ◽  
Initial Temperature ◽  
High Pressure Range

HIGH-PRESSURE RANGE SHOCK WAVE DATA FOR SYNTACTIC FOAMS

2009 ◽  
Author(s):  
J. Ribeiro ◽  
R. Mendes ◽  
I. Plaksin ◽  
J. Campos ◽  
C. Capela ◽  
...  
Keyword(s):  
Shock Wave ◽  
High Pressure ◽  
Pressure Range ◽  
Syntactic Foams ◽  
Wave Data ◽  
High Pressure Range

scholarly journals Inactivation of a Norovirus by High-Pressure Processing

2006 ◽  
Vol 73 (2) ◽  
pp. 581-585 ◽  
Author(s):  
David H. Kingsley ◽  
Daniel R. Holliman ◽  
Kevin R. Calci ◽  
Haiqiang Chen ◽  
George J. Flick
Keyword(s):  
High Pressure ◽  
Pressure Range ◽  
Room Temperature ◽  
Initial Temperature ◽  
High Pressure Processing ◽  
Inactivation Kinetics ◽  
Virus Inactivation ◽  
Pressure Treatment ◽  
Murine Norovirus ◽  
Human Norovirus

ABSTRACT Murine norovirus (strain MNV-1), a propagable norovirus, was evaluated for susceptibility to high-pressure processing. Experiments with virus stocks in Dulbecco's modified Eagle medium demonstrated that at room temperature (20°C) the virus was inactivated over a pressure range of 350 to 450 MPa, with a 5-min, 450-MPa treatment being sufficient to inactivate 6.85 log10 PFU of MNV-1. The inactivation of MNV-1 was enhanced when pressure was applied at an initial temperature of 5°C; a 5-min pressure treatment of 350 MPa at 30°C inactivated 1.15 log10 PFU of virus, while the same treatment at 5°C resulted in a reduction of 5.56 log10 PFU. Evaluation of virus inactivation as a function of treatment times ranging from 0 to 150 s and 0 to 900 s at 5°C and 20°C, respectively, indicated that a decreasing rate of inactivation with time was consistent with Weibull or log-logistic inactivation kinetics. The inactivation of MNV-1 directly within oyster tissues was demonstrated; a 5-min, 400-MPa treatment at 5°C was sufficient to inactivate 4.05 log10 PFU. This work is the first demonstration that norovirus can be inactivated by high pressure and suggests good prospects for inactivation of nonpropagable human norovirus strains in foods.

The high-pressure range of the reaction CH(2Π)+CO+M⇒HCCO+M

1998 ◽  
Vol 108 (16) ◽  
pp. 6709-6716 ◽  
Author(s):  
D. Fulle ◽  
H. Hippler ◽  
F. Striebel
Keyword(s):  
High Pressure ◽  
Pressure Range ◽  
High Pressure Range

Equations of state and melting curve of boron carbide in the high-pressure range of shock compression

2017 ◽  
Vol 124 (3) ◽  
pp. 469-475 ◽  
Author(s):  
A. M. Molodets ◽  
A. A. Golyshev ◽  
D. V. Shakhrai
Keyword(s):  
High Pressure ◽  
Boron Carbide ◽  
Shock Compression ◽  
Pressure Range ◽  
Equations Of State ◽  
Melting Curve ◽  
High Pressure Range

Metal-Hydrogen Systems in the High Pressure Range

1979 ◽  
Vol 114 (114) ◽  
pp. 59-81 ◽  
Author(s):  
B. Baranowski
Keyword(s):  
High Pressure ◽  
Pressure Range ◽  
High Pressure Range ◽  
Hydrogen Systems

scholarly journals EVALUATION ON THE CONSISTENCY OF CALIBRATION RESULTS BETWEEN REFERENCE STANDARDS OF PNEUMATIC PRESSURE BALANCE BASED ON NON-FULL RANGE CALIBRATION

2019 ◽  
Vol 21 (3) ◽  
pp. 203
Author(s):  
Adindra Vickar Ega ◽  
R.Rudi Anggoro Samodro
Keyword(s):  
High Pressure ◽  
Pressure Range ◽  
Full Range ◽  
Effective Area ◽  
National Metrology Institute ◽  
Pressure Balance ◽  
Pneumatic Pressure ◽  
Piston Cylinder ◽  
Normalized Error ◽  
High Pressure Range

<p>To provide calibration services for pressure measuring devices, SNSU-BSN has several piston-cylinder standard that may traceable to different National Metrology Institute (NMIs). Non-full range calibration of pressure balance has been performed to evaluate the consistency of calibration results between those standard, especially for establishing self-traceability in the future. In this research, a piston-cylinder unit S/N 1926 with medium pressure range of 1750 kPa, was calibrated with low pressure range S/N 978 of 350 kPa and high pressure range S/N 1054 of 7000 kPa. The calibration was performed with cross-float method to evaluate the effective area of piston-cylinder at null pressure and reference temperature of 20⁰C (<em>A<sub>0,20</sub></em>) and distortion coefficient (λ) as the 1926 main parameters. The obtained value, respectively are (1.961 166 × 10<sup>-4</sup> ± 4.4 × 10<sup>-9</sup>) m<sup>2 </sup>and (-1.67 × 10<sup>-12</sup> ± 9.4 × 10<sup>-13</sup>) Pa<sup>-1 </sup>from 978 and (1.961166 × 10<sup>-4</sup> ± 5.1 × 10<sup>-9</sup>) m<sup>2</sup> and (-1.58 × 10<sup>-12</sup> ± 8.4 × 10<sup>-13</sup>) Pa<sup>-1 </sup>from 1054. The result of 1926 from both methods shows good conformity with Normalized Error (En) of 0.0007 and 0.069, respectively. Linearity of effective area changes to the pressure is very consistent in both low and high pressure range. Validation results by using PTB-Germany results, shows the relative different for <em>A<sub>0</sub></em> and <em>λ</em> obtained are less than 0,1 × 10<sup>-6</sup> and 6%,respectively. Therefore, the pneumatic pressure balance of SNSU-BSN is traceable, consistent with each other and capable for disseminating the pressure unit along all primary pressure standard owned with high agreement compared to those of other advance NMIs.</p>

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