Octagon Modelling Using Parallel Projection of Optical Tomography

2014 ◽  
Vol 70 (3) ◽  
Author(s):  
Naizatul Shima Mohd Fadzil ◽  
Ruzairi Abdul Rahim ◽  
Juliza Jamaludin ◽  
Siti Zarina Mohd Muji ◽  
Mohd Fadzli Abdul Sahib ◽  
...  
Keyword(s):  
Measurement Method ◽  
Optical Tomography ◽  
Hardware Design ◽  
Parallel Projection ◽  
Light Sources ◽  
Vertical Column ◽  
Cross Sectional ◽  
The Cross

This paper presents a hardware design, arrangement and measurement for optical tomography where optical tomography uses light sources as the transmitter and photodiodes as the receiver. By using parallel projection for 44 laser transmitters and photodiode receivers at the cross-sectional boundary, the existence of bubbles inside a vertical column pipeline is determined. Octagon modelling with an eight-sided jig is used for projection and the measurement method for this research is shown. An offline technique is used to collect readings from each signal and the image is reconstructed from the data received.

Hardware Design of Laser Optical Tomography System for Detection of Bubbles Column

2013 ◽  
Vol 64 (5) ◽  
Author(s):  
Naizatul Shima Mohd Fadzil ◽  
Ruzairi Abdul Rahim ◽  
Mohd Safirin Karis ◽  
Siti Zarina Mohd Muji ◽  
Mohd Fadzli Abdul Sahib ◽  
...  
Keyword(s):  
Voltage Drop ◽  
Optical Tomography ◽  
Hardware Design ◽  
Bubble Columns ◽  
Two Phase ◽  
Vertical Column ◽  
Cross Sectional ◽  
Chemical Process Industry ◽  
Tomography System ◽  
Wide Range

This paper presents a hardware design and optical tomography application for fast cross sectional detection of single or two phase flows in pipes or bubble columns. Sixteen laser pointer transmitters and photodiode receivers are arranged at the object cross sectional boundary to detect the existence of bubbles inside a vertical column pipeline. A valve is installed at the bottom of the pipe to produce the source of bubbles. Due to the simple operation, good heat transfer and mass transfer of bubble columns, they can be applied in a wide range of applications in the chemical process industry. The size of the bubbles produced was estimated to be between 5 mm and 20 mm in diameter. The voltage drop at the sensor directly shows the existence of bubbles between the transmitter and receiver.

scholarly journals Reliability of a measurement method for the cross-sectional area of the longus colli using real-time ultrasound imaging

Ultrasound ◽  
2016 ◽  
Vol 24 (3) ◽  
pp. 154-162
Author(s):  
Cliona O’Riordan ◽  
Pepijn Van De Ven ◽  
John Nelson ◽  
Karen McCreesh ◽  
Amanda Clifford
Keyword(s):  
Real Time ◽  
Ultrasound Imaging ◽  
Measurement Method ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Cross Sectional ◽  
Longus Colli ◽  
The Cross

On the cross-sectional shape of the cellulose crystallites in the tunicate Halocynthia papillosa

1990 ◽  
Vol 48 (3) ◽  
pp. 566-567
Author(s):  
J.-F. Revol ◽  
Y. Van Daele ◽  
F. Gaill
Keyword(s):  
Contrast Imaging ◽  
Animal Kingdom ◽  
Bright Field ◽  
Field Mode ◽  
Cross Sectional ◽  
Ultrathin Sections ◽  
The Cross ◽  
Sectional Shape ◽  
Valonia Ventricosa ◽  
C Nmr

The only form of cellulose which could unequivocally be ascribed to the animal kingdom is the tunicin that occurs in the tests of the tunicates. Recently, high-resolution solid-state l3C NMR revealed that tunicin belongs to the Iβ form of cellulose as opposed to the Iα form found in Valonia and bacterial celluloses. The high perfection of the tunicin crystallites led us to study its crosssectional shape and to compare it with the shape of those in Valonia ventricosa (V.v.), the goal being to relate the cross-section of cellulose crystallites with the two allomorphs Iα and Iβ.In the present work the source of tunicin was the test of the ascidian Halocvnthia papillosa (H.p.). Diffraction contrast imaging in the bright field mode was applied on ultrathin sections of the V.v. cell wall and H.p. test with cellulose crystallites perpendicular to the plane of the sections. The electron microscope, a Philips 400T, was operated at 120 kV in a low intensity beam condition.

A Technique for Measuring the Cross-Sectional Axes of the Longissimus Dorsi Muscle and Fat Depth in Lambs1,2

1960 ◽  
Vol 19 (3) ◽  
pp. 803-809
Author(s):  
D. J. Matthews ◽  
R. A. Merkel ◽  
J. D. Wheat ◽  
R. F. Cox
Keyword(s):  
Longissimus Dorsi ◽  
Cross Sectional ◽  
Longissimus Dorsi Muscle ◽  
Dorsi Muscle ◽  
The Cross

Automated Diagonal Slice and View Solution for 3D Device Structure Analysis

2018 ◽  
Author(s):  
Sang Hoon Lee ◽  
Jeff Blackwood ◽  
Stacey Stone ◽  
Michael Schmidt ◽  
Mark Williamson ◽  
...  
Keyword(s):  
Cross Section ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Image Data ◽  
Planar Surface ◽  
Device Structure ◽  
Cross Sectional ◽  
Device Structures ◽  
The Cross ◽  
Planar Analysis

Abstract The cross-sectional and planar analysis of current generation 3D device structures can be analyzed using a single Focused Ion Beam (FIB) mill. This is achieved using a diagonal milling technique that exposes a multilayer planar surface as well as the cross-section. this provides image data allowing for an efficient method to monitor the fabrication process and find device design errors. This process saves tremendous sample-to-data time, decreasing it from days to hours while still providing precise defect and structure data.

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