Control of magnetic rock fabrics by mica preferred orientation: a quantitative approach

1995 ◽  
Vol 17 (11) ◽  
pp. 1601-1613 ◽  
Author(s):  
Siegfried Siegesmund ◽  
Klaus Ullemeyer ◽  
Michael Dahms
Keyword(s):  
Preferred Orientation ◽  
Quantitative Approach ◽  
Magnetic Rock

Quantifying the Pattern of Retinal Vascular Orientation in Diabetic Retinopathy Using Optical Coherence Tomography Angiography

2021 ◽  
Author(s):  
Yanhui Ma ◽  
Matthew Ohr ◽  
Cynthia Roberts
Keyword(s):  
Optical Coherence Tomography ◽  
Diabetic Retinopathy ◽  
Optical Coherence Tomography Angiography ◽  
Preferred Orientation ◽  
Quantitative Approach ◽  
Optical Coherence ◽  
Retinal Microvasculature ◽  
Significant Difference ◽  
Vessel Orientation ◽  
Orientation Pattern

Abstract Quantitative imaging using optical coherence tomography angiography (OCTA) could provide objective tools for the detection and characterization of diabetic retinopathy (DR). In this study, we developed a novel quantitative approach using OCTA images to delineate the vessel orientation pattern of a specific region of interest, which is an orientation distribution curve depicting the probability of vessels at each angle from 0 to 360 degrees. Three quantitative metrics including vessel preferred orientation, vessel anisotropy and vessel mass were extracted from the orientation pattern and analyzed in each of eight 45° sectors at the macula. Differential retinal microvascular orientation patterns were observed between three healthy subjects and three subjects with DR. Greater variability of vessel preferred orientation (p<0.001) and vessel mass (p<0.001) was exhibited among subjects with DR than healthy in eight sectors. In the nasal-superior sector, there was a significant difference between healthy and DR subjects in preferred orientation and vessel anisotropy. The vessel mass characterized from the vascular orientation pattern was shown to be strongly correlated with the traditionally reported vessel density (p<0.00001). These preliminary results suggest the feasibility and advantage of our vessel orientation-based quantitative approach using OCTA to characterize DR-associated changes in retinal microvasculature.

The Microstructure of Shock-Synthesized Diamond

1967 ◽  
Vol 25 ◽  
pp. 324-325
Author(s):  
Lucien F. Trueb
Keyword(s):  
Single Crystals ◽  
Preferred Orientation ◽  
High Magnification ◽  
Texture Pattern ◽  
Shock Process ◽  
New Type ◽  
Diffraction Diagram

A new type of synthetic industrial diamond formed by an explosive shock process has been recently developed by the Du Pont Company. This material consists of a mixture of two basically different forms, as shown in Figure 1: relatively flat and compact aggregates of acicular crystallites, and single crystals in the form of irregular polyhedra with straight edges.Figure 2 is a high magnification micrograph typical for the fibrous aggregates; it shows that they are composed of bundles of crystallites 0.05-0.3 μ long and 0.02 μ. wide. The selected area diffraction diagram (insert in Figure 2) consists of a weak polycrystalline ring pattern and a strong texture pattern with arc reflections. The latter results from crystals having preferred orientation, which shows that in a given particle most fibrils have a similar orientation.

Existence of Cubic ZrO2 at 300°C on Bulk Zirconium

1969 ◽  
Vol 27 ◽  
pp. 166-167
Author(s):  
R.A. Ploc
Keyword(s):  
Metal Oxide ◽  
Metal Substrate ◽  
Preferred Orientation ◽  
Monoclinic Zirconia ◽  
Epitaxial Relationship

The manner in which ZrO2 forms on zirconium at 300°C in air has been discussed in the first reference. In short, monoclinic zirconia nucleates and grows with a preferred orientation relative to the metal substrate. The mode of growth is not well understood since an epitaxial relationship which gives minimum misfit between the zirconium ions in the metal/oxide combination is not realized. The reason may be associated with a thin cubic or tetragonal layer of ZrO2 between the inner oxygen saturated metal and the outer monoclinic zirconia.

Preferred orientation of rolling-induced ε martensite in an Fe-Mn-Si alloy

2003 ◽  
Vol 112 ◽  
pp. 365-368 ◽  
Author(s):  
K. K. Jee ◽  
W. Y. Jang ◽  
Y. H. Chung
Keyword(s):  
Preferred Orientation ◽  
Ε Martensite

Visual and quantitative approach to bone marrow foci of increased glucose uptake on PET/CT in a case of aplastic anaemia

2010 ◽  
Vol 49 (02) ◽  
pp. N10-N12 ◽  
Author(s):  
F. Cicone ◽  
M. Stalder ◽  
D. Geiger ◽  
A. Cairoli ◽  
A. Bischof Delaloye ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Glucose Uptake ◽  
Aplastic Anaemia ◽  
Quantitative Approach ◽  
Pet Ct

Analisis Persepsi Korupsi Pajak Dan Iklim Organisasi Terhadap Kepatuhan Wajib Pajak Orang Pribadi Karyawan

2017 ◽  
Vol 4 (2) ◽  
pp. 169-180
Author(s):  
Arif Fajar Wibisono ◽  
Yudha Catur Kusuma N
Keyword(s):  
Organizational Climate ◽  
Tax Compliance ◽  
Quantitative Approach ◽  
Multiple Linear Regressions ◽  
Parametric Test ◽  
Tax Corruption ◽  
Linear Regressions

This study aims to determine whether perceptions of corruption and organizational climate affect the compliance of personal taxpayers. This explanatory study used quantitative approach of statistical parametric test and multiple linear regressions with questionnaire instrument. This study involved personal taxpayer in the area of KPP Pratama Kota Surakarta. The result of this study confirms that the perceptions of individual tax corruption and organizational climate affect the compliance of personal taxpayers. The better the organization’s climate in emphasizing tax compliance is, the higher the level of compliance personal taxpayers is. In addition, the higher the level of perception of a person’s corruption of the tax apparatus is severely punished then increasing the compliance of personal taxpayers’ increases.

PENGARUH KOMPETENSI, MOTIVASI, DAN KOMUNIKASI TERHADAP KINERJA PEGAWAI PADA DINAS PEKERJAAN UMUM DAN PENATAAN RUANG KABUPATEN BANDUNG BARAT

2019 ◽  
Vol 2 (2) ◽  
pp. 1-14
Author(s):  
Lydia Novi Yanti
Keyword(s):  
Case Studies ◽  
Secondary Data ◽  
T Test ◽  
Civil Servants ◽  
Quantitative Approach ◽  
Research Approach ◽  
Validity And Reliability ◽  
F Test ◽  
Simultaneous Test

This research is conducted in order to assess the effect of competency, motivation, and communication on employee’s performance (case studies at Dinas Pekerjaan Umum dan Penataan Ruang West Bandung Regency) partially and simultaneously. There are many factors that affect the employee’s performance, but this research is only limited to the factors of competency, motivation, and communication. The researcher used primary and secondary data. The research approach used is quantitative approach which the samples are 55 civil servants which is assessed by 5 Heads of Fields and 2 Heads Sub-Division. Before analyzing, all research validity and reliability instruments are examined. After the data are valid and reliable then analyzed by using classical assumption test, partial test (t test), and simultaneous test (F test) helping by IBM SPSS version 23 software. The result of analysis showed that competency, motivation, and communication variables are affected positively significantly and partially to the employee’s performance. Competency, motivation, and communication variables simultaneously affected positively and significantly about 54,3% and the rest is about 45,7% affected by other variable that is not observed in this research.  

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