Study of the stability of Ca2AlZrO5,5 ceramics in crude petroleum and production of substrates for temperature sensors for petroleum extraction industry

2015 ◽  
Author(s):  
Rebeka Oliveira Domingues ◽  
Andréa Gonçalves de Sousa ◽  
Mércia Franca de Carvalho ◽  
Renata Oliveira Domingues ◽  
Ricardo Artur Sanguinett Ferreira ◽  
...  
Keyword(s):  
Temperature Sensors ◽  
Crude Petroleum ◽  
The Stability ◽  
Petroleum Extraction

Production and characterization of Sr2AlZrO5,5 ceramics to encapsulate temperature sensors in the petroleum extraction industry

2017 ◽  
Author(s):  
Andréa Sousa ◽  
Manuella Batista Padilha ◽  
Ricardo Artur Sanguinetti Ferreira ◽  
Yogendra Prasad Yadava ◽  
Renata Domingues ◽  
...  
Keyword(s):  
Temperature Sensors ◽  
Petroleum Extraction

GRAVITATIONAL AND MAGNETIC CONVECTION IN MAGNETIC FLUID

2005 ◽  
Vol 19 (07n09) ◽  
pp. 1367-1373
Author(s):  
A. A. BOZHKO ◽  
G. F. PUTIN
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Solid Phase ◽  
Fluid Flows ◽  
Homogeneous Magnetic Field ◽  
Temperature Sensors ◽  
Cylindrical Layer ◽  
Temperature Sensitive ◽  
Concentration Gradients ◽  
The Stability

Experiments were performed to examine the influence of external homogeneous magnetic field on ferrofluid convection in thin cylindrical layer heated from one wide sidewall and cooled from another. Gravitational and magnetic mechanisms of convection as well as the influence of gravitational sedimentation of particles and their aggregates on stability and structure of fluid flows are studied. The integral and local temperature sensors were used for measurement of heat transport across the layer. Visualization of flow patterns was provided by a temperature-sensitive liquid crystal sheet. The results indicate that with the help of a magnetic field it is possible to control the stability and the form of convection motions. Besides, the concentration gradients of solid phase can have material role to convection instability and heat transfer.

On the Stability of Amorphous Silicon Temperature Sensors

2020 ◽  
Vol 67 (8) ◽  
pp. 3348-3354
Author(s):  
Nicola Lovecchio ◽  
Domenico Caputo ◽  
Francesca Costantini ◽  
Valentina Di Meo ◽  
Augusto Nascetti ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Temperature Sensors ◽  
The Stability

scholarly journals Production of Ba2AlNbO6 Ceramics and Study of their Stability in Crude Petroleum for the Conservation of Metallic Sensing Elements Used in Petroleum Extraction

2018 ◽  
Vol 21 (5) ◽  
Author(s):  
Marilaine Moreira de Lima ◽  
Rebeka Oliveira Domingues ◽  
Ricardo Artur Sanguinetti Ferreira ◽  
Yogendra Prasad Yadava
Keyword(s):  
Crude Petroleum ◽  
Petroleum Extraction

scholarly journals Production of Ca<sub>2</sub>AlNbO<sub>6</sub> Ceramics and Study of Their Stability in Crude Petroleum for the Conservation of Metallic Sensing Elements used in Petroleum Extraction

2012 ◽  
Vol 03 (06) ◽  
pp. 408-413 ◽  
Author(s):  
Yogendra P. Yadava ◽  
Marilaine M. de Lima ◽  
José Carlos S. Oliveira ◽  
Ricardo A. Sanguinetti Ferreira
Keyword(s):  
Crude Petroleum ◽  
Petroleum Extraction

Open discussion

1982 ◽  
Vol 99 ◽  
pp. 605-613
Author(s):  
P. S. Conti
Keyword(s):  
Buenos Aires ◽  
Large Mass ◽  
List Type ◽  
Common Phenomenon ◽  
Open Discussion ◽  
The Stability ◽  
Ring Nebulae

Conti: One of the main conclusions of the Wolf-Rayet symposium in Buenos Aires was that Wolf-Rayet stars are evolutionary products of massive objects. Some questions:–Do hot helium-rich stars, that are not Wolf-Rayet stars, exist?–What about the stability of helium rich stars of large mass? We know a helium rich star of ∼40 MO. Has the stability something to do with the wind?–Ring nebulae and bubbles : this seems to be a much more common phenomenon than we thought of some years age.–What is the origin of the subtypes? This is important to find a possible matching of scenarios to subtypes.

Symmetric Multistep Methods Revisited: II. Numerical Experiments

1999 ◽  
Vol 173 ◽  
pp. 309-314 ◽  
Author(s):  
T. Fukushima
Keyword(s):  
Multistep Methods ◽  
Computational Time ◽  
Integration Time ◽  
Implicit Methods ◽  
Symmetric Methods ◽  
Celestial Bodies ◽  
The Stability ◽  
Predictor Corrector ◽  
Symmetric Multistep Methods ◽  
Integration Errors

AbstractBy using the stability condition and general formulas developed by Fukushima (1998 = Paper I) we discovered that, just as in the case of the explicit symmetric multistep methods (Quinlan and Tremaine, 1990), when integrating orbital motions of celestial bodies, the implicit symmetric multistep methods used in the predictor-corrector manner lead to integration errors in position which grow linearly with the integration time if the stepsizes adopted are sufficiently small and if the number of corrections is sufficiently large, say two or three. We confirmed also that the symmetric methods (explicit or implicit) would produce the stepsize-dependent instabilities/resonances, which was discovered by A. Toomre in 1991 and confirmed by G.D. Quinlan for some high order explicit methods. Although the implicit methods require twice or more computational time for the same stepsize than the explicit symmetric ones do, they seem to be preferable since they reduce these undesirable features significantly.

Sign in / Sign up

Export Citation Format

Share Document