Results 51 to 60 of about 272,628 (344)

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

Pulse contour analysis: a valid assessment of central arterial stiffness in children? [PDF]

, 2018
In adults the contour analysis of peripheral pressure waves in the upper limb reflects central aortic stiffness. Here, we wanted to demonstrate the appropriateness of pulse contour analysis to assess large artery stiffness in children.
Bergmann, Ivo, Eisenberger, Ute, Frey, Felix, Mohaupt, Markus, Simonetti, Giacomo   +4 more
core  

Plasma diagnostics of an EIT wave observed by Hinode/EIS and SDO/AIA

, 2011
We present plasma diagnostics of an EIT wave observed with high cadence in Hinode/EIS sit-and-stare spectroscopy and SDO/AIA imagery obtained during the HOP-180 observing campaign on 2011 February 16.
Asai, Attrill, Chen, Chen, Cohen, Downs, Harra, Harra, Kienreich, Kienreich, Kozarev, Lemen, Liu, Ma, Muhr, Patsourakos, Thompson, Veronig, Veronig, Veronig   +19 more
core   +1 more source

Hybrid Auxetic Architectures: Integrating Curvature‐Driven Design for Enhanced Mechanical Tunability and Structural Performance

Advanced Engineering Materials, EarlyView.
Curvature‐tuned auxetic lattices are designed, fabricated, and mechanically characterized to reveal how geometric curvature governs stretchability, stress redistribution, and Poisson's ratio evolution. Photoelastic experiments visualize stress pathways, while hyperelastic simulations quantify deformation mechanics.
Shuvodeep De, Giovanni Meli, Meysam Khalighian, Anahita Emami   +3 more
wiley   +1 more source

Measuring Blood Pulse Wave Velocity with Bioimpedance in Different Age Groups

Sensors, 2019
In this project, we have studied the use of electrical impedance cardiography as a possible method for measuring blood pulse wave velocity, and hence be an aid in the assessment of the degree of arteriosclerosis. Using two different four-electrode setups,
Shafa Aria, Yassine Elfarri, Marius Elvegård, Adam Gottfridsson, Halvor S. Grønaas, Sigve Harang, Anders Jansen, Thomas Emil Rolland Madland, Ivar Bruvik Martins, Marius Wilhelm Olstad, Tommy Lee Ryan, Anwar Nazih Shaban, Øyvind Løken Svenningsen, Andre Djupvik Sørensen, Emil Holm Ulvestad, Ole Martin Vister, Morten Bratgjerd Øvergaard, Håvard Kalvøy, Fred Johan Pettersen, Hans Henrik Odland, Vegard Munkeby Joten, Øyvind Grannes Martinsen, Christian Tronstad, Ole Elvebakk, Ørjan Grøttem Martinsen   +24 more
doaj   +1 more source

Observations of time delayed all-optical routing in a slow light regime

, 2008
We report an observation of a delayed all-optical routing/switching phenomenon based on ultraslow group velocity of light via nondegenerate four-wave mixing processes in a defected solid medium. Unlike previous demonstrations of enhanced four-wave mixing
Byoung S. Ham, F. Xia, M. Sargent III
core   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Effects of bee venom acupuncture on heart rate variability, pulse wave, and cerebral blood flow for types of Sasang Constitution

Journal of Pharmacopuncture, 2009
1. Objectives: To evaluate effects of bee venom acupuncture on cardiovascular system and differences according to each constitution. 2. Methods: Heart rate variability, pulse wave and the velocity of cerebral blood flow were measured before bee venom ...
Lee Sang-min, Kim koo, Oh Seung-yun, Kwon Young-mi, Joo Jong-cheon   +4 more
doaj   +1 more source

Carrier-envelope phase dependence in single-cycle laser pulse propagation with the inclusion of counter-rotating terms

, 2012
We focus on the propagation properties of a single-cycle laser pulse through a two-level medium by numerically solving the full-wave Maxwell-Bloch equations.
Cui N, Kiffner M, Mihai A Macovei, Ni Cui, Niu Y P, Wegener M   +5 more
core   +1 more source