scholarly journals PIV Imaging for Multiphase Flow Measurement Utilizing Synchrotron Radiation X-ray

2005 ◽  
Vol 25 (Supplement2) ◽  
pp. 205-208
Author(s):  
Tomomasa Uemura ◽  
Yasufumi Yamamoto ◽  
Shigeru Nishio ◽  
Shigeru Murata ◽  
Kentaro Uesugi
Keyword(s):  
Synchrotron Radiation ◽  
Multiphase Flow ◽  
Flow Measurement ◽  
X Ray

New nonradioactive microspheres and more sensitive X-ray fluorescence to measure regional blood flow

1992 ◽  
Vol 263 (6) ◽  
pp. H1946-H1957 ◽  
Author(s):  
H. Mori ◽  
S. Haruyama ◽  
Y. Shinozaki ◽  
H. Okino ◽  
A. Iida ◽  
...  
Keyword(s):  
Blood Flow ◽  
Synchrotron Radiation ◽  
Flow Measurement ◽  
Fluorescence Spectra ◽  
Regional Blood Flow ◽  
Energy Dispersive Spectrometer ◽  
X Ray ◽  
Dispersive System ◽  
Monochromatic Synchrotron ◽  
Higher Sensitivity

We developed new nonradioactive microspheres and used more sensitive X-ray fluorescence spectrometers than used previously to measure regional blood flow in the heart and other organs. We demonstrated the chemical stability of eight kinds of heavy element-loaded microspheres and validated their use for regional blood flow measurement by comparing duplicate flows measured with radioactive and/or nonradioactive microspheres in both acute and chronic dog experiments. The wavelength-dispersive spectrometer (Philips PW 1480) has a higher sensitivity than the previously described X-ray fluorescent system and reduced the number of microspheres required for accurate measurement. The fine energy resolution of this system makes it possible to increase the numbers of different kinds of microspheres to be quantitated, but at present only eight kinds are available. We also used a synchrotron radiation-excited energy dispersive spectrometer. The monochromatic synchrotron radiation allowed us to obtain much higher signal-to-background ratios of X-ray fluorescence spectra than with the wavelength-dispersive system (50 dB more for Zr-loaded microspheres) and will enable analysis of fluorescent activity in smaller regions (< 20 mg) than the radioactive method does.

Direct Observation of Monolayer Zones in Al-wt 4% Cu

1990 ◽  
Vol 48 (1) ◽  
pp. 14-15
Author(s):  
B. Jouffrey ◽  
D. Dorignac ◽  
A. Bourret
Keyword(s):  
Solid Solution ◽  
Synchrotron Radiation ◽  
Direct Observation ◽  
Supersaturated Solid Solution ◽  
Original Model ◽  
X Ray ◽  
Image Position

Since the early works on GP zones and the model independently proposed by Preston and Guinier on the first steps of precipitation in supersaturated solid solution of aluminium containing a few percent of copper, many works have been performed to understand the structure of different stages in the sequence of precipitation.The scheme which is generally admitted can be drawn from a work by Phillips.In their original model Guinier and Preston analysed a GP zone as composed of a single (100) copperrich plane surrounded by aluminum atomic planes with a slightly shorter distance from the original plane than in the solid solution.From X-ray measurements it has also been shown that GP1 zones were not only copper monolayer zones. They could be up to a few atomic planes thick. Different models were proposed by Guinier, Gerold, Toman. Using synchrotron radiation, proposals have been recently made.

THE STUDY OF DISLOCATION GLIDE IN ICE BY SYNCHROTRON RADIATION X-RAY TOPOGRAPHY

1987 ◽  
Vol 48 (C1) ◽  
pp. C1-175-C1-181
Author(s):  
S. AHMAD ◽  
M. OHTOMO ◽  
R. W. WHITWORTH
Keyword(s):  
Synchrotron Radiation ◽  
X Ray ◽  
Dislocation Glide

TESTS OF MULTILAYERS BASED SOFT X-RAY MONOCHROMATORS FOR SYNCHROTRON RADIATION

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-91-C9-94
Author(s):  
M. GRIONI ◽  
F. SCHAEFERS ◽  
J. B. GOEDKOOP ◽  
J. C. FUGGLE ◽  
J. L. WOOD ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
X Ray
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