Experimental analysis of kaolinite particle orientation during triaxial path

2011 ◽  
Vol 35 (8) ◽  
pp. 947-968 ◽  
Author(s):  
Mahdia Hattab ◽  
Jean-Marie Fleureau
Keyword(s):  
Experimental Analysis ◽  
Particle Orientation ◽  
Kaolinite Particle

Texture and orientation of kaolin in coatings

Clay Minerals ◽  
1999 ◽  
Vol 34 (1) ◽  
pp. 89-98 ◽  
Author(s):  
N. J. Elton ◽  
L. F. Gate ◽  
J. J. Hooper
Keyword(s):  
Orientation Distribution ◽  
Particle Orientation ◽  
Attenuated Total Reflectance ◽  
X Ray Diffraction ◽  
Coating Structure ◽  
X Ray ◽  
Infra Red ◽  
Film Substrate ◽  
Kaolinite Particle ◽  
Polyester Film

AbstractX-ray diffraction (XRD), infra red (IR) spectroscopy, gloss goniophotometry and stylus profilometry were used to investigate the alignment of kaolinite applied as a thin coating on a polyester film substrate. The principles and applicability of the analytical methods are reviewed and discussed in the context of a kaolinite coating. X-ray diffraction and transmission IR were used to measure kaolinite misalignment and orientation distribution in the coating. Transmission IR measures the coating bulk; XRD data are surface biased, but contain contributions from the bulk. Attenuated total reflectance-IR (ATR-IR) provides a direct measure of kaolinite alignment within ~1 µm of the coating surface and also allows an assessment of surface smoothness. Gloss goniophotometry and contact profilometry measure surface microroughness and macroroughness, respectively, rather than kaolinite particle orientation. However, the properties of roughness and orientation are related. Bulk and surface texture are not necessarily correlated and a combined approach using both bulk and surface sensitive techniques is required for a full understanding of coating structure.

Characteristic Geometry and Diffraction Contrast of Dispersed ThO2 Crystals

1969 ◽  
Vol 27 ◽  
pp. 168-169
Author(s):  
R. J. Horylev ◽  
L. E. Murr
Keyword(s):  
Dark Field ◽  
Particle Orientation ◽  
Contrast Effects ◽  
Strain Fields ◽  
Diffraction Contrast ◽  
Dispersed Particles ◽  
Field Electron Microscopy ◽  
Dark Field Electron ◽  
Particle Images ◽  
Diffraction Effects

Smith has shown by dark-field electron microscopy of extracted ThO2 particles from TD-nickel (2% ThO2) that they possess single crystal characteristics. It is generally assumed that these particle dispersions are incoherent. However, some diffraction effects associated with the particle images appeared to be similar to coherency strain fields. The present work will demonstrate conclusively that ThO2 dispersed particles in TD-nickel (2% ThO2) and TD-NiCr (2% ThO2, 20% Cr, Ni) are single crystals. Moreover, the diffraction contrast effects are extinction fringes. That is, these effects arise because of the particle orientation with respect to the electron beam and the extinction conditions for various operating reflections The particles are in fact incoherent.

New challenges to image processing posed by cryo-Electron microscopy of single particles

1991 ◽  
Vol 49 ◽  
pp. 422-423
Author(s):  
Joachim Frank
Keyword(s):  
Electron Microscopy ◽  
Phase Contrast ◽  
Particle Orientation ◽  
Single Particles ◽  
Contrast Transfer Function ◽  
Virtual Absence ◽  
Cryo Electron Microscopy ◽  
Spatial Frequencies ◽  
New Challenges ◽  
Particle Images

Compared with images of negatively stained single particle specimens, those obtained by cryo-electron microscopy have the following new features: (a) higher “signal” variability due to a higher variability of particle orientation; (b) reduced signal/noise ratio (S/N); (c) virtual absence of low-spatial-frequency information related to elastic scattering, due to the properties of the phase contrast transfer function (PCTF); and (d) reduced resolution due to the efforts of the microscopist to boost the PCTF at low spatial frequencies, in his attempt to obtain recognizable particle images.

Winter is coming to the experimental analysis of behavior.

2018 ◽  
Vol 18 (2) ◽  
pp. 184-192 ◽  
Author(s):  
Matthew C. Bell
Keyword(s):  
Experimental Analysis ◽  
Experimental Analysis Of Behavior

The futures of experimental analysis of behavior.

2018 ◽  
Vol 18 (2) ◽  
pp. 124-133 ◽  
Author(s):  
Peter R. Killeen
Keyword(s):  
Experimental Analysis ◽  
Experimental Analysis Of Behavior

A comparison between the countermeasures Modafinil and napping for maintaining performance and alertness using a quasi-experimental analysis

2002 ◽  
Author(s):  
J. Lynn Caldwell ◽  
John A. Caldwell ◽  
Kristi A. Roberts
Keyword(s):  
Experimental Analysis ◽  
Quasi Experimental

Experimental Analysis of Local Accuracy in an Automated Reading Program for Disadvantaged Children

1970 ◽  
Author(s):  
E. R. Christophersen ◽  
M. J. Davis ◽  
M. M. Wolf
Keyword(s):  
Experimental Analysis ◽  
Reading Program ◽  
Disadvantaged Children ◽  
Local Accuracy

Students' Perceptions of a Student-Centered Syllabus: An Experimental Analysis

2015 ◽  
Author(s):  
Aaron S. Richmond ◽  
Jared Becknell ◽  
Jeanne M. Slattery ◽  
Robin Morgan ◽  
Nathanael Mitchell
Keyword(s):  
Experimental Analysis ◽  
Student Centered

Experimental analysis of team performance

1984 ◽  
Author(s):  
Henry H. Emurian ◽  
Joseph V. Brady ◽  
Ronald L. Ray ◽  
James L. Meyerhoff ◽  
Edward H. Mougey
Keyword(s):  
Team Performance ◽  
Experimental Analysis
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