Results 71 to 80 of about 501,776 (290)

Spectral domain optical coherence tomography measurements in amblyopic Egyptian patients

Delta Journal of Ophthalmology, 2017
Purpose The aim of this study was to compare the macular thickness and each retinal layer thickness of the amblyopic eyes with their normal fellow eyes in patients with unilateral amblyopia using the Spectralis spectral domain optical coherence ...
Mohammad A.M El-Hifnawy, Amr F Abo-Elkheir, Amir A Abo-Samra, Karim A Mohamed   +3 more
doaj   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Study on the Process Characteristics of Picosecond Laser Trepan Cutting Hole Manufacturing for Heat-Resistant Steel

Metals
Picosecond laser drilling offers high precision and quality, and compared to femtosecond lasers, it also balances processing efficiency, making it widely used across various fields. However, existing drilling processes still face issues such as roundness
Liang Wang, Long Xu, Changjian Wu, Yefei Rong, Kaibo Xia   +4 more
doaj   +1 more source

ACCURATE OPTICAL TARGET POSE DETERMINATION FOR APPLICATIONS IN AERIAL PHOTOGRAMMETRY [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
We propose a new design for an optical coded target based on concentric circles and a position and orientation determination algorithm optimized for high distances compared to the target size.
D. A. Cucci
doaj   +1 more source

A dynamical and kinematical model of the Galactic stellar halo and possible implications for galaxy formation scenarios

, 1996
We re-analyse the kinematics of the system of blue horizontal branch field (BHBF) stars in the Galactic halo (in particular the outer halo), fitting the kinematics with the model of radial and tangential velocity dispersions in the halo as a function of ...
Arnold R., C. Flynn, Flynn C., Flynn C., Flynn C., Hawkins M. R. S., Ibata R., J. Sommer‐Larsen, Navarro J. F., P. R. Christensen, Pagel B. E. J., R. Wilhelm, Rocha-Pinto H. J., Sommer-Larsen J., Sommer-Larsen J., Sommer-Larsen J., Sommer-Larsen J., Sommer-Larsen J., T. C. Beers, van Albada T. S.   +19 more
core   +1 more source

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

Advanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

Optimizing Post Friction Stir Welding Heat Treatment in Dissimilar Friction Stir Welded 6061/AlSi10MgMn Joints for Electrical Vehicle Battery Housing

Advanced Engineering Materials, EarlyView.
Microstructural evolution and hardness optimization along the cross‐section of friction stir welded AA6061/AlSi10MgMn joints, for electric vehicle battery housings, were investigated. Postweld aging between 170°C and 220°C enhances hardness uniformity within the nugget zone.
Emanuele Ghio, Emanuela Cerri
wiley   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

New perspectives on research [PDF]

, 2018
The Graduate Research Session at the conference will be held on Thursday March 1st from 4-5pm. At this session, graduate students from institutions from across the state will present a series of lightning talks where each presenter will briefly share ...
Garcia, Yank'l, Quigley, Nicholas Patrick, Smith, Tawnya D.   +2 more
core  

The support of the limit distribution of optimal Riesz energy points on sets of revolution in $\mathbb{R}^{3}$

, 2007
Let A be a compact set in the right-half plane and $\Gamma(A)$ the set in $\mathbb{R}^{3}$ obtained by rotating A about the vertical axis. We investigate the support of the limit distribution of minimal energy point charges on $\Gamma(A)$ that interact ...
Abramowitz M., D. P. Hardin, E. B. Saff, J. S. Brauchart, Pólya G.   +4 more
core   +1 more source