Results 51 to 60 of about 59,193 (237)

Asymptotic Analysis of Double-Scattering Channels

, 2011
We consider a multiple-input multiple-output (MIMO) multiple access channel (MAC), where the channel between each transmitter and the receiver is modeled by the doubly-scattering channel model.
Couillet, Romain, Debbah, Merouane, Hoydis, Jakob   +2 more
core   +2 more sources

A deep wide-field sub-mm survey of the Carina Nebula complex [PDF]

, 2010
The Great Nebula in Carina is a superb location in which to study the physics of violent massive star-formation and the resulting feedback effects, including cloud dispersal and triggered star-formation.
Beaumont, Boss, Brooks, Brooks, Brooks, Carey, Cox, Dale, Dale, Deharveng, Elmegreen, F. Schuller, Freyer, Froebrich, Gomez, Gritschneder, Groh, Güsten, H. Ohlendorf, H. Zinnecker, Harper-Clark, Henning, Hildebrand, K. M. Menten, Kramer, Lada, Maruta, Megeath, Mehner, Oey, Ossenkopf, Preibisch, Preibisch, Rathborne, Rathborne, Rygl, S. Pekruhl, Sana, Schneider, Schuller, Siringo, Smith, Smith, Smith, Smith, Smith, Smith, Stamatellos, T. Preibisch, Tapia, Trumpler, Vanhala, Weidner, Yonekura, Yorke, Yorke   +55 more
core   +1 more source

Silicon‐Embedded Multifunctional Heterogeneous Integration for Miniaturized Photoplethysmography Detection Devices

Advanced Science, EarlyView.
ABSTRACT The multifunctional integration of chips with high flexibility and scalable manufacturing is crucial for enhancing chip performance, reducing chip size, and simplifying chip design. However, balancing volume, cost, flexibility, and functionality using traditional heterogeneous integration methods is challenging.
Lang Chen, Shizun Hu, Zhou Yang, Shitao Shen, Pan Zhang, Han Xu, Chi Zhang, Wei Wang   +7 more
wiley   +1 more source

Hazardous Near Earth Asteroid Mitigation Campaign Planning Based on Uncertain Information on Asteroid Physical Properties [PDF]

, 2013
Given a limited warning time, an asteroid impact mitigation campaign would hinge on uncertainty-based information consisting of remote observational data of the identified Earth-threatening object, general knowledge on near-Earth asteroids (NEAs), and ...
Ceriotti, Matteo, Radice, Gianmarco, Sanchez, Joan Pau, Sugimoto, Yohei   +3 more
core   +1 more source

The RNA‐Binding Protein PARN Remodeled 3′ UTR Structure Defines Poly(A)‐Loading Sites to Mediate Immunoglobulin Homeostasis

Advanced Science, EarlyView.
ABSTRACT Class Switch Recombination (CSR) is essential for generating high‐affinity antibody isotypes from IgM during adaptive humoral responses. Despite well‐established roles for various transcription factors, whether CSR is subject to dedicated post‐transcriptional control represents a significant gap in knowledge.
Siyuan Sun, Chen Yang, Xiaoyu Wang, Naijing Hu, Shengyao Zhang, Xinchun Li, Yu Chen, Jianan Zhai, Xiangfeng Tang, Wei Lu, Chenxu Lu, Changchang Cao, Weiru Yu, Wenhao Wu, Xiaonan Nie, Fengchao Wang, Bing Fang, Fazheng Ren, Yixuan Li, Juan Chen   +19 more
wiley   +1 more source

Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing

Advanced Science, EarlyView.
Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang, Steve Gaudez, Mario Togni, Steven Van Petegem, Markus Bambach, Mamzi Afrasiabi   +5 more
wiley   +1 more source

Dual-Bifurcation Model and Numerical Analysis of Driving Forces on the Keyhole Boundary in Variable Polarity Plasma Arc Welding

Crystals
Molten pool flow and keyhole status during Variable Polarity Plasma Arc (VPPA) welding directly affect the weld quality and stability. The lack of a clear correlation between them, however, prevents this process approach from being developed further.
Bin Xu, Boyu Xiao, Fan Jiang, Yongquan Han, Guowei Li, Zhenbang Sun, Shinichi Tashiro, Manabu Tanaka, Shujun Chen   +8 more
doaj   +1 more source

In-Process Analysis of Melt Pool Fluctuations with Scanning Optical Coherence Tomography for Laser Welding of Copper for Quality Monitoring

Micromachines, 2022
Optical coherence tomography (OCT) is an inline process monitoring technology for laser welding with various applications in the pre-, in-, and post-process.
Thomas Will, Tobias Jeron, Claudio Hoelbling, Lars Müller, Michael Schmidt   +4 more
doaj   +1 more source

Accelerated Field‐Cycling MRI using the Keyhole Technique [PDF]

, 2014
Peer reviewedPublisher ...
Lurie, David John, Ross, Peter James
core  

Effect of laser-welding parameters on the heat input and weld-bead profile [PDF]

, 2005
Laser butt-welding of medium carbon steel was investigated using CW 1.5 kW CO2 laser. The effect of laser power (1.2 - 1.43 kW), welding speed (30 - 70 cm/min) and focal point position (-2.5 - 0 mm) on the heat input and the weld-bead geometry (i.e ...
A.G. Olabi, Allen, Benyounis, Dawes, Fuerschbach, Gunaraj, Gunaraj, Huang, K.Y. Benyounis, Khuri, Kim, M.S.J. Hashmi, Montgomery, Steen   +13 more
core   +1 more source