Reliable EBSD mapping of 90 degree domains in a tetragonal ferroelectric perovskite has been achieved for the first time, together with reliable automated orientation determination from TEM-Kikuchi patterns. This has been used to determine misorientation angles at 90 degree domain boundaries and thus local c/a ratios. The sources of orientation noise/error and their effects on the misorientatio...

abstract introduction. the study for beauty can be traced back to the earliest civilizations. many factors influence the perception of beauty, and esthetic dentistry continues to grow as a major part of overall dentistry. one of the most important factors in beauty of the teeth is the proportion of them to one another, and golden proportion is determined to be 1.618. the purpose of this study w...

In order to study the mechanical properties of ZT7G/LT-03A carbon fiber reinforced composite bolted joints, single-bolt double-lap joints tests were carried out with 3 kinds ply and width, effects different ratios, width diameter ratios on failure load mode analyzed. Then, process specimens was simulated by using progressive damage analysis method. The model are consistent that specimen, which ...

PURPOSE To evaluate the distribution and factors related to planimetrically determined vertical cup/disc (v-C/D) and rim width/disc diameter (Rw/Dd) ratios of the optic discs in a population-based study of Japanese subjects without glaucoma. METHODS Of 4632 eligible residents 40 years of age and older, 3762 residents underwent a detailed ocular examination including sequential optic disc ster...

An evenly mixed Langmuir film of hexadecylamine (HDA) and palmitic acid (PA) was prepared on the air-water interface and transferred to a Si substrate for the fabrication of nano-sized patterns. Vibrational spectrum of the transferred film shows that all acid groups of PAs were deprotonated and amine groups of HDAs were protonated by an acid-base reaction. The effect of mixing ratios in atomic ...

The time scale for onset and decay of vortices in a Taylor-Couette system cannot be predicted from linear stability analysis, yet it is important from a practical standpoint. A two-dimensional pseudospectral direct numerical simulation was used to examine the time scales for subcritical-to-supercritical transition and supercritical-to-subcritical transition for a variety of aspect ratios =H /d=...

Turbulent forced convective mass (heat) transfer downstream of blockages with round and elongated holes in a rectangular channel was studied. The blockages and the channel had the same 12:1 (width-to-height ratio) cross section, and a distance equal to twice the channel height separated consecutive blockages. The diameter of the holes was either 0.5 or 0.75 of the height of the channel. Naphtha...

Radiology is an important diagnostic instrument in avian medicine, but standard measurement ranges for the objective evaluation of radiographs of birds are rare. To establish radiographic reference ranges for the critically endangered Spix's macaw (Cyanopsitta spixii), we measured radiographic silhouettes of the heart, liver, kidneys, spleen, proventriculus, and keel of the sternum on 29 radiog...

Gait control is a clinical problem in people with Parkinson’s disease (PD). Gait variability leading to instability is commonly measured using spatio-temporal variables like step length, step time, step width and cadence. Another measurement that provides information about directional instability is harmonic ratios (HRs). The purpose of this study was to examine the relationship between step wi...