Surface gradient integrated profiler for x-ray and EUV optics: 3D mapping of 1m-long flat mirror and off-axis parabolic mirror

2006 ◽  
Author(s):  
Y. Higashi ◽  
Y. Takaie ◽  
K. Endo ◽  
T. Kume ◽  
K. Enami ◽  
...  
Keyword(s):  
3D Mapping ◽  
Parabolic Mirror ◽  
X Ray ◽  
Surface Gradient ◽  
Flat Mirror

scholarly journals Right ventricle/interventricular septum electrophysiological anatomy (determination of optimal right ventricular lead placement)

2015 ◽  
Vol 18 (4) ◽  
pp. 132
Author(s):  
M. V. Didenko ◽  
S. P. Marchenko ◽  
G. G. Khubulava ◽  
D. A. Starchik ◽  
G. S. Pasenov
Keyword(s):  
Interventricular Septum ◽  
Cardiac Conduction ◽  
3D Mapping ◽  
Electrode Implantation ◽  
X Ray ◽  
Lead Placement ◽  
Morphometric Investigation ◽  
Ventricular Lead ◽  
Implantation Techniques

Notwithstanding a theoretically justified lead placement into the interventricular septum (IVS), the data from the clinical trials demonstrate somewhat controversial results. One of these controversies is the absence of consolidated criteria for positioning the electrode to deliver pacing from the interventricular septum (IVS) area. The study describes anatomic features of RV and IVS with respect to the cardiac conduction system, normal ventricular excitation and electrode implantation techniques for continuous pacing. A comparative study of 73 specimens of cadaver hearts was carried out by using electro-anatomic 3D mapping of the heart, X-ray examination, computer-aided tomography, morphological and morphometric investigation. It was found out that the medium part of IVS in the septomarginal trabecula zone could be considered the best for continuous pacing. The criteria for the RV lead to be implanted in this zone were determined.

scholarly journals Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface Rolling

Metals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 73
Author(s):  
Juying Li ◽  
Qingsong Mei ◽  
Yana Li ◽  
Beihai Wang
Keyword(s):  
High Pressure ◽  
Surface Layer ◽  
Pure Copper ◽  
X Ray Diffraction ◽  
Electronic Microscopy ◽  
X Ray ◽  
Pressure Surface ◽  
Surface Gradient ◽  
Pressure Time ◽  
Gradient Microstructure

Pure copper was subjected to high-pressure surface rolling (HPSR) to obtain a surface gradient layer. Effects of HPSR parameters on the surface microstructure and microhardness of Cu were investigated by using optical microscopy, transmission electronic microscopy, X-ray diffraction, and the microhardness test. The HPSR surface layer has a gradient microstructure consisting of increasingly refined grains with decreasing depth from the treated surface (DFS). The thicknesses of the refined surface layer can be up to ~1.8 mm, and the grain size of the topmost surface is down to ~88 nm, depending on the HPSR parameters including pressure, time, and temperature. Microhardness of HPSR samples increases with decreasing DFS, with a maximum of ~2.4 times that of the undeformed matrix. The present results indicated that HPSR could be an effective method for the production of a mm-thick surface layer on Cu with gradient microstructure and property.

X-Ray Scattering Of Superpolished Flat Mirror Samples

1982 ◽  
Author(s):  
B. Aschenbach ◽  
H. Brauninger ◽  
A. Ondrusch ◽  
P. Predehl
Keyword(s):  
X Ray ◽  
Title X ◽  
X Ray Scattering ◽  
Flat Mirror ◽  
Ray Scattering

A parabolic mirror x-ray collimator

2000 ◽  
Vol 11 (5) ◽  
pp. 484-488 ◽  
Author(s):  
A Franks ◽  
K Jackson ◽  
A Yacoot
Keyword(s):  
Parabolic Mirror ◽  
X Ray

scholarly journals Heat Conduction On Pan Using Portable Parabolic Stove With Addition Of Flat Mirror

2020 ◽  
Vol 6 ◽  
Author(s):  
Benedictus Mardwianta ◽  
Abdul Haris Subarjo ◽  
Wayan Wiardefan
Keyword(s):  
Heat Transfer ◽  
Heat Conduction ◽  
Solar Radiation ◽  
Surface Temperature ◽  
Experimental Method ◽  
Wall Temperature ◽  
Open Space ◽  
The Sun ◽  
Parabolic Mirror ◽  
Flat Mirror

This research aims to develop the parabolic stove with addition of some flat mirrors around the parabolic mirror. It will increase the heat transfer of conduction in the pan. The parabolic itself has around and concave shape, making it suitable for concentrating solar energy. The experimental method was carried out in this research and the test was carried out in an open space with solar radiation intensities with ranging from 169.6 W/m² to 974.4 W/m². The results of heat conduction on a pan without the addition of a flat mirror generate a 105.15 Watt, addition of one flat mirror will generate a 174.82 Watt, addition of two  flat mirrors will generate a 259.24 Watt, addition of three flat mirrors will generate a 342.79 Watt and addition of four flat mirrors will generate a 412.26 Watt. The heat conduction depends on the intensity of the sun caught by the reflector. If the sun intensity decreases, the surface temperature between of the outer pan wall (T1) and the inner wall temperature (T2) will decrease too. Keywords: Heat conduction, sun intensity, parabolic stove

scholarly journals Prospects of 3D mapping of the Galactic Centre clouds with X-ray polarimetry

2014 ◽  
Vol 441 (4) ◽  
pp. 3170-3176 ◽  
Author(s):  
F. Marin ◽  
V. Karas ◽  
D. Kunneriath ◽  
F. Muleri
Keyword(s):  
Galactic Centre ◽  
3D Mapping ◽  
X Ray

scholarly journals Surface gradient integrated profiler for X-ray and EUV optics

2007 ◽  
Vol 8 (3) ◽  
pp. 177-180 ◽  
Author(s):  
Yasuo Higashi ◽  
Yuichi Takaie ◽  
Katsuyoshii Endo ◽  
Tatsuya Kume ◽  
Kazuhiro Enami ◽  
...  
Keyword(s):  
X Ray ◽  
Surface Gradient
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