نتایج جستجو برای: radioactive particle tracking (rpt)

تعداد نتایج: 303208  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
hamed bashiri navid mostoufi rahmat sotudeh-gharebagh jamal chaouki

effect of scale on the hydrodynamics of gas-solid fluidized beds was investigated in two fluidized beds of 152 mm and 78 mm in diameter.  air at room temperature was used as the fluidizing gas in the bed of sand particles. the radioactive particle tracking (rpt) technique was employed to obtain the instantaneous positions of the particles at every 20 ms of the experiments. these data were used ...

2008
Ashraf H. Shehata Mohammed S. AlJohani

The present paper reviews the foundation and application of gamma-ray transmission Computed Tomography (CT) and Radioactive Particle Tracking (RPT) methods in industry. Those methods are primarily useful in oil and petrochemical industries, where processes need to be diagnosed for the purpose of design and/or operating conditions optimization. There are two categories of industrial tomography s...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
shabnam sanaei navid mostoufi ramin radmanesh rahmat sotudeh gharebagh jamal chaouki

effect of temperature on hydrodynamics of bubbling gas-solid fluidized beds was investigated.  experiments were carried out in the range of 25-600 ºc and different superficial gas velocities in the range of 0.17-0.78 m/s with sand particles. time-position trajectory of particles was obtained by radioactive particle tracking technique. these data were used for determination of mean velocities of...

Journal: :Processes 2023

A new methodology for implementing radioactive particle tracking (RPT) in bubble columns with intense vertical rod internals was developed and implemented to investigate the effect of dense on hydrodynamics. The utilizes a hybrid Monte Carlo N-Particle (MCNP) simulation an automated RPT calibration device generate large number points accurate reconstruction instantaneous positions particles usi...

Hamed Bashiri Jamal Chaouki Navid Mostoufi, Rahmat Sotudeh-Gharebagh

Effect of scale on the hydrodynamics of gas-solid fluidized beds was investigated in two fluidized beds of 152 mm and 78 mm in diameter.  Air at room temperature was used as the fluidizing gas in the bed of sand particles. The Radioactive Particle Tracking (RPT) technique was employed to obtain the instantaneous positions of the particles at every 20 ms of the experiments. These data were u...

Journal: :IEEE Trans. Contr. Sys. Techn. 2001
Teck B. Goh Zhongming Li Ben M. Chen Tong Heng Lee Tony Huang

This paper deals with the problem of a servo system design for a conventional hard disk drive with a single voice-coil-motor (VCM) actuator using a so-called robust and perfect tracking (RPT) approach. We will first model the physical system and then formulate it into a robust and perfect tracking problem, in which a measurement feedback controller can be obtained to achieve a robust and perfec...

Journal: :The EMBO journal 1998
D M Rubin M H Glickman C N Larsen S Dhruvakumar D Finley

A family of ATPases resides within the regulatory particle of the proteasome. These proteins (Rpt1-Rpt6) have been proposed to mediate substrate unfolding, which may be required for translocation of substrates through the channel that leads from the regulatory particle into the proteolytic core particle. To analyze the role of ATP hydrolysis in protein breakdown at the level of the individual A...

2000
KEXIU LIU BEN M. CHEN

We consider in this paper the robust and perfect tracking (RPT) problem for multivariable linear systems with external disturbances. The problem is to design a proper controller such that the resulting overall closed-loop system is asymptotically stable and the controlled output almost perfectly tracks a given reference signal with an arbitrarily fast settling time in the face of external distu...

Jamal Chaouki Navid Mostoufi, Rahmat Sotudeh Gharebagh Ramin Radmanesh Shabnam Sanaei

Effect of temperature on hydrodynamics of bubbling gas-solid fluidized beds was investigated.  Experiments were carried out in the range of 25-600 ºC and different superficial gas velocities in the range of 0.17-0.78 m/s with sand particles. Time-position trajectory of particles was obtained by radioactive particle tracking technique. These data were used for determination of mean velocitie...

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