Results 141 to 150 of about 53,890 (317)

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Automatic Fall Detection and Heartbeat Monitoring for Elderly

, 2023
Mr. Vinay Kumar H, S Hamsaveni, Vijay Kumar, Mohammed Umer .K, Syeda Sania Quadri   +4 more
openalex   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Accuracy of the Instantaneous Breathing and Heart Rates Estimated by Smartphone Inertial Units

Sensors
Seismocardiography (SCG) and Gyrocardiography (GCG) use lightweight, miniaturized accelerometers and gyroscopes to record, respectively, cardiac-induced linear accelerations and angular velocities of the chest wall.
Eliana Cinotti, Jessica Centracchio, Salvatore Parlato, Daniele Esposito, Antonio Fratini, Paolo Bifulco, Emilio Andreozzi   +6 more
doaj   +1 more source

Accuracy of heartbeat perception is reflected in the amplitude of the heartbeat-evoked brain potential. [PDF]

, 2004
Ahern, Augustine, Aziz, Aziz, Bajwa, Bechara, Bennarroch, Berthoud, Bloch-Salisbury, Cameron, Carrillo-de-la-Pena, Cass, Covington, Critchley, Damasio, Damasio, Devrim, Dirlich, Dirlich, Ehlers, Ehlers, Fallen, Ferguson, Franssen, Furlong, Gratton, Hanamori, Hari, Hashimoto, Hillyard, Hjorth, Hobson, Hobson, Hollerbach, Hollerbach, Jaening, Jaening, Jones, Jones, Katkin, Kekoni, King, Knafelc, Leopold, Montoya, Montoya, Mussgay, Nakajima, Nieuwenhuys, Oppenheimer, Picton, Riordan, Rosen, Rosen, Schandry, Schandry, Schandry, Schandry, Schnitzler, Schnitzler, Shimojo, Tougas, Trejo, Webster, Weitkunat, Weitkunat, Weitkunat, Yoon   +67 more
core   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Detection of Heartbeat and Respiration Using a Modified Signal Model in the CW Bio-Radar [PDF]

, 2008
Myunghwan Seo, Byung-Seub Lee
openalex   +1 more source

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May, Finn‐Lennard Janthur, Lena Kreie, Michael Müller, Sarah Seffer, Nick Schwarz, Jörg Hermsdorf, Thomas Hassel, Stefan Kaierle, Ludger Overmeyer   +9 more
wiley   +1 more source

Detection of healthy and pathological heartbeat dynamics in ECG signals using multivariate recurrence networks with multiple scale factors [PDF]

, 2023
Lu Ma, Mei-hui Chen, Aijun He, Deqiang Cheng, Xiaodong Yang   +4 more
openalex   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source