scholarly journals Integrated system simulation in X-ray radiography

2001 ◽  
Vol 142 (1-3) ◽  
pp. 263-269 ◽  
Author(s):  
Thomas J.T. Kwan ◽  
Allen R. Mathews ◽  
Peggy J. Christenson ◽  
Charles M. Snell
Keyword(s):  
System Simulation ◽  
Integrated System ◽  
X Ray

scholarly journals Advanced Small Animal Conformal Radiation Therapy Device

2016 ◽  
Vol 16 (1) ◽  
pp. 45-56 ◽  
Author(s):  
Sunil Sharma ◽  
Ganesh Narayanasamy ◽  
Beata Przybyla ◽  
Jessica Webber ◽  
Marjan Boerma ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Small Animal ◽  
Therapeutic Benefit ◽  
Integrated System ◽  
Field Size ◽  
National Council ◽  
Conformal Radiation Therapy ◽  
X Ray ◽  
Custom Made

We have developed a small animal conformal radiation therapy device that provides a degree of geometrical/anatomical targeting comparable to what is achievable in a commercial animal irradiator. small animal conformal radiation therapy device is capable of producing precise and accurate conformal delivery of radiation to target as well as for imaging small animals. The small animal conformal radiation therapy device uses an X-ray tube, a robotic animal position system, and a digital imager. The system is in a steel enclosure with adequate lead shielding following National Council on Radiation Protection and Measurements 49 guidelines and verified with Geiger-Mueller survey meter. The X-ray source is calibrated following AAPM TG-61 specifications and mounted at 101.6 cm from the floor, which is a primary barrier. The X-ray tube is mounted on a custom-made “gantry” and has a special collimating assembly system that allows field size between 0.5 mm and 20 cm at isocenter. Three-dimensional imaging can be performed to aid target localization using the same X-ray source at custom settings and an in-house reconstruction software. The small animal conformal radiation therapy device thus provides an excellent integrated system to promote translational research in radiation oncology in an academic laboratory. The purpose of this article is to review shielding and dosimetric measurement and highlight a few successful studies that have been performed to date with our system. In addition, an example of new data from an in vivo rat model of breast cancer is presented in which spatially fractionated radiation alone and in combination with thermal ablation was applied and the therapeutic benefit examined.

scholarly journals Mars Cruise Orbit Determination from Combined Optical Celestial Techniques and X-ray Pulsars

2017 ◽  
Vol 70 (4) ◽  
pp. 719-734 ◽  
Author(s):  
Jiandong Liu ◽  
Erhu Wei ◽  
Shuanggen Jin
Keyword(s):  
Kalman Filter ◽  
Autonomous Navigation ◽  
Unscented Kalman Filter ◽  
Integrated System ◽  
Observation Data ◽  
X Ray ◽  
Celestial Navigation ◽  
Federated Kalman Filter ◽  
Mars Pathfinder ◽  
Navigation Accuracy

The precise autonomous navigation for deep space exploration by combination of multi-source observation data is a key issue for probe control and scientific applications. In this paper, the performance of an integrated Optical Celestial Navigation (OCN) and X-ray Pulsars Autonomous Navigation (XNAV) system is investigated for the orbit of Mars Pathfinder. Firstly, OCN and XNAV single systems are realised by an Unscented Kalman Filter (UKF). Secondly, the integrated system is simulated with a Federated Kalman Filter (FKF), which can do the information fusion of the two subsystems of UKF and inherits the advantages of each subsystem. Thirdly, the performance of our system is evaluated by analysing the relationship between observation errors and navigation accuracy. The results of the simulation experiments show that the biases between the nominal and our calculated orbit are within 5 km in all three axes under complex error conditions. This accuracy is also better than current ground-based techniques.

An integrated system for field analysis of Cd(ii) and Pb(ii) via preconcentration using nano-TiO2/cellulose paper composite and subsequent detection with a portable X-ray fluorescence spectrometer

RSC Advances ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 9002-9006 ◽  
Author(s):  
Xiaofeng Lin ◽  
Shun-Xing Li ◽  
Feng-Ying Zheng
Keyword(s):  
Integrated System ◽  
Field Analysis ◽  
Nano Tio2 ◽  
X Ray ◽  
Cellulose Paper ◽  
Analytical System ◽  
Fluorescence Spectrometer

An integrative field analytical system was developed for the determination of Pb(ii) and Cd(ii).

The SAXS/WAXS software system of the DUBBLE CRG beamline at the ESRF

2001 ◽  
Vol 34 (4) ◽  
pp. 519-522 ◽  
Author(s):  
E. Homan ◽  
M. Konijnenburg ◽  
C. Ferrero ◽  
R. E. Ghosh ◽  
I. P. Dolbnya ◽  
...  
Keyword(s):  
Integrated System ◽  
Software System ◽  
Test Bed ◽  
Time Resolved ◽  
X Ray ◽  
Standard Data ◽  
Data Formats ◽  
X Ray Scattering ◽  
Angle Scattering ◽  
Wide Range

The small/wide-angle X-ray scattering (SAXS/WAXS) system on the DUBBLE CRG beamline at the ESRF is used for both static and time-resolved measurements. The integrated system developed for control and data reduction deals effectively with the high rates of incoming data from the different detector systems, as well as the presentation of results for the user. To ensure that the data may be used directly by a wide range of packages, they may be recorded in a number of output formats, thus serving as a practical test bed where developing standards may be compared and contrasted. The software system implements proposals raised at the canSAS meetings to promote a limited set of standard data formats for small-angle scattering studies. The system presented can cope with a volume of results in excess of 10 Gbytes of data per experiment and shows the advantages achieved by minimizing the dependence on raw-data formats.

Characterization of Potential Catalysts for Carbon Monoxide Removal from Reformate Fuel for PEM Fuel Cells

2002 ◽  
Vol 756 ◽  
Author(s):  
Peter A. Adcock ◽  
Eric L. Brosha ◽  
Fernando H. Garzon ◽  
Francisco A. Uribe
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Profile Analysis ◽  
Pem Fuel Cells ◽  
Integrated System ◽  
X Ray ◽  
Fuel Cell Performance ◽  
Full Profile ◽  
Bet Technique ◽  
Thermal Analysis Techniques

ABSTRACTWe are developing a fuel-cell-integrated system for enhancing the effectiveness of an air-bleed for CO-tolerance of hydrogen and reformate PEM fuel cells, with minimal increase in stack cost or specific volume. This is called the reconfigured anode (RCA) system [1]. We report here on properties of several potential catalysts for this system. The materials were characterized by X-ray powder diffraction (XRD), energy dispersive X-ray spectrometry (EDS), and thermal analysis techniques. Surface area was determined using the Brunauer-Emmett-Teller (BET) technique. The XRD results were interpreted using full-profile analysis. In ongoing work, reactivity with CO is being quantified under various conditions, using gas chromatographic (GC) analysis. The results are discussed in terms of effects of the presence of an RCA catalyst on fuel cell performance, using a small air-bleed.

Multichannel integrated system for fast X-ray imaging applications

2010 ◽  
Author(s):  
R. Szczygiel ◽  
P. Grybos ◽  
P. Maj ◽  
A. Tsukiyama ◽  
K. Matsushita ◽  
...  
Keyword(s):  
Integrated System ◽  
X Ray ◽  
X Ray Imaging
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