scholarly journals A Comparative Study of Curvature-Based and Differential Versions of Dotter Raster-stereography Techniques

2021 ◽  
Vol 1 (1) ◽  
pp. 01-12
Author(s):  
Muhammad Wasim ◽  
Keyword(s):  
Comparative Study ◽  
Surface Topography ◽  
New Technique ◽  
Human Face ◽  
Straight Line ◽  
A New Technique

Conventional Line-based Raster-stereography has been a popular technique for 3-D surface topography. However, in its application for human face screening, the problem of line breaking was observed. In order to resolve this problem, there came up a new technique called dotted raster-stereography. The previously reported version of dotted raster-stereography extracted the curvature features of human face. This paper presents a modified version, viz. differential dotted raster-stereography in which instead of curvature, differences in straight line distances between adjacent points are calculated. A comparative picture of the two versions of dotted raster-stereography techniques is presented. Results suggest that this new differential version of dotted raster-stereography algorithm is faster in execution due to its simpler implementation in software, though lower in accuracy, as compared with the previously reported curvature-based version of dotted raster stereography.

scholarly journals 2 Dimensional Dislocation Dynamics – A New Technique for the Simulation of Deformation Microtextures

1997 ◽  
Vol 28 (3-4) ◽  
pp. 167-179
Author(s):  
F. Roters ◽  
D. Raabe
Keyword(s):  
Cold Deformation ◽  
Dislocation Motion ◽  
Dislocation Dynamics ◽  
New Technique ◽  
Linear Elastic ◽  
Straight Line ◽  
Simulation Step ◽  
Local Stresses ◽  
A New Technique ◽  
Edge Dislocations

A new technique for the simulation of microtexture evolution during cold deformation which is based on 2 dimensional (2D) dislocation dynamics is presented. In the simulation all involved dislocations are regarded as infinite straight line detects which are embedded in an otherwise isotropic linear elastic medium. As the model is 2D only edge dislocations are considered.In the first simulation step the net local stresses are derived and used to calculate the resulting dislocation motion. Dislocation multiplication, annihilation and reactions are taken into account. Thermal activation is included. In the second step the local misorientations arising from the dislocation distribution are calculated.This method shows in microscopic detail how misorientations are generated and distributed within grains during plastic deformation.

Three none: A new technique for open appendectomy. Prospective non-randomized comparative study

2008 ◽  
Vol 40 (3) ◽  
pp. 125-129 ◽  
Author(s):  
A. Hussain ◽  
H. Mahmood ◽  
E. Geddoa ◽  
A. James
Keyword(s):  
Comparative Study ◽  
Open Appendectomy ◽  
New Technique ◽  
A New Technique

scholarly journals Comparative study of the main flotation frothers using a new HYDROMESS adapted technique

2014 ◽  
Vol 67 (1) ◽  
pp. 87-92 ◽  
Author(s):  
Moacir Medeiros Veras ◽  
Carlos Adolpho Magalhães Baltar ◽  
João Bosco de Araújo Paulo ◽  
José Yvan Pereira Leite
Keyword(s):  
Surface Tension ◽  
Comparative Study ◽  
Bubble Size ◽  
Drop Size ◽  
New Technique ◽  
Methyl Isobutyl ◽  
Flotation Process ◽  
Selective Action ◽  
Froth Stability ◽  
A New Technique

Stability of bubble size in the pulp zone and froth control is an important parameter for a successful flotation process. The present study compares the action of the main frothers in terms of: mean bubble size in the pulp zone, froth stability, surface-tension-lowering ability and reagent participation in flotation of a naturally hydrophobic mineral. Bubble size was determined using a new technique adapted from HYDROMESS, a device designed to measure drop size. The remaining indicators were obtained by determining surface tension and conducting flotation tests with the addition of hydrophobic (graphite) and hydrophilic (calcite) particles. The results indicate that methyl isobutyl carbinol (MIBC) is the most efficient frother in controlling coalescence, with critical coalescence concentration (CCC) reached at 20 ppm. Moreover, this frother has greater potential for selective action, since it increased calcite entrainment by only 2.3% at a concentration of 30 ppm. In flotation tests with a sample of graphite, MIBC produced higher recoveries.

Upright MRI measurement of mechanical axis and frontal plane alignment as a new technique: a comparative study with weight bearing full length radiographs

2010 ◽  
Vol 40 (7) ◽  
pp. 885-889 ◽  
Author(s):  
Emmanouil Liodakis ◽  
Mohamed Kenawey ◽  
Iosifina Doxastaki ◽  
Christian Krettek ◽  
Carl Haasper ◽  
...  
Keyword(s):  
Comparative Study ◽  
Mechanical Axis ◽  
Weight Bearing ◽  
Frontal Plane ◽  
Full Length ◽  
New Technique ◽  
Upright Mri ◽  
A New Technique

scholarly journals EVALUATION OF A NEW TECHNIQUE FOR SUPPORTING ANATOMICAL MUSEUM SPECIMENS: A COMPARATIVE STUDY

2018 ◽  
Vol 6 (4.2) ◽  
pp. 5929-5935
Author(s):  
Nkiruka Chinonyelum Azubuike ◽  
◽  
Kelvin Uchenna Onwusi ◽  
Keyword(s):  
Comparative Study ◽  
New Technique ◽  
Museum Specimens ◽  
A New Technique
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