Results 81 to 90 of about 9,331 (329)

The Role of Calcitonin Gene‐Related Peptide in High‐Altitude Headache: A Prospective Field Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective High‐altitude headache (HAH) is a common neurological condition associated with rapid ascent to high altitude. The pathophysiological mechanisms underlying HAH remain incompletely understood. Calcitonin gene‐related peptide (CGRP), a neuropeptide implicated in migraine pathophysiology, may play a key role in the pathophysiology of ...
Roman Schniepp, Ludwig Karrasch, Helena Breitenstein, Andreas Straube, Katharina Kamm   +4 more
wiley   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

Advanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo, Daniela Winsley Valereto Friozi, Vinícius de Oliveira, Marcia Cristina Branciforti   +3 more
wiley   +1 more source

Time-Delayed Reservoir Computing Based on a Two-Element Phased Laser Array for Image Identification

IEEE Photonics Journal, 2021
We report on a simple approach of time-delayed reservoir computing (RC) based on a two-element phased laser array for image identification. Here the phased laser array with optical feedback and injection is trained according to the representative ...
Yu Huang, Pei Zhou, Yigong Yang, Taiyi Chen, Nianqiang Li   +4 more
doaj   +1 more source

Optical phased array power penalty analysis

Optics Express, 2007
This paper investigates the power penalty from optical phased arrays used for wide-angle beam steering of optical communication signals. The analysis studies the effect of aperture size, data rate, modulation format, and diffraction angle on digital lightwave signals.
Jing M, Tsui, Charles, Thompson, Jeffrey M, Roth   +2 more
openaire   +2 more sources

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

End-fire silicon optical phased array with half-wavelength spacing

APL Photonics, 2018
We demonstrate an optical phased array with emitting elements spaced at half the operational wavelength. The device is a one-dimensional array fabricated on an integrated silicon platform for operation at a wavelength of 1.55 μm.
Michael R. Kossey, Charbel Rizk, Amy C. Foster   +2 more
doaj   +1 more source

160-Gb/s Optical packet switching subsystem with a monolithic optical phased-array switch

, 2010
1 × 8 and 1 × 16 optical packet switching (OPS) node subsystems are demonstrated. The OPS node consists of a 1 × N monolithically integrated InP optical phased-array switch, an electronic switch controller, and a label extractor/eraser that utilizes ...
Raz, O Oded, Vries, T de, Soganci, IM, Calabretta, N Nicola, Tanemura, T., Williams, KA Kevin, Nakano, Y Yoshiaki, Soganci, I.M., Higuchi, K, Williams, K.A., Higuchi, K., Raz, O., Vries, de, T., Wang, W Wenrui, Wang, W., Tanemura, T, Dorren, HJS Harm, Calabretta, N., Dorren, H.J.S., Nakano, Y.   +19 more
core   +1 more source

Circular Optical Phased Arrays with Radial Nano-Antennas

Nanomaterials, 2022
On-chip optical phased arrays (OPAs) are the enabling technology for diverse applications, ranging from optical interconnects to metrology and light detection and ranging (LIDAR). To meet the required performance demands, OPAs need to achieve a narrow beam width and wide-angle steering, along with efficient sidelobe suppression.
Liu, Qiankun, Benedikovic, Daniel, Smy, Tom, Atieh, Ahmad, Cheben, Pavel, Ye, Winnie N.   +5 more
openaire   +3 more sources

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Fast and deterministic optical phased array calibration via pointwise optimisation

Light: Advanced Manufacturing, 2023
Owing to the structural errors in the optical phased array, an initial random phase reduces the quality of the deflection beam. The most commonly applied approach to phase calibration is based on adaptive optics. However, adaptive optimisation approaches
Jingwen Shan, Hanyi Zhang, Lijing Li, Weijie Deng, Mingjie Sun   +4 more
doaj   +1 more source