Results 91 to 100 of about 361,673 (283)

A Nanoindentation Study of Attenuation in Geological Materials

Earth and Space Science
The dissipation of elastic strain energy, or attenuation, in Earth materials contributes to a range of geophysical phenomena, such as the damping of seismic waves and tidal heating of planetary bodies. We present a new method for measuring attenuation in
Nir Z. Badt, Ron Maor, David L. Goldsby
doaj   +1 more source

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

Advanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou, Zhiqiang Chen, Yuanbiao Ma, Zhiqiang Tang, Qianqian Wang   +4 more
wiley   +1 more source

Attenuation correction of myocardial perfusion scintigraphy images without transmission scanning [PDF]

, 2015
Attenuation correction is essential for reliable interpretation of emission tomography; however the use of transmission measurements to generate attenuation maps is limited by availability of equipment and potential mismatches between the transmission ...
Cade, SC
core  

Deconvolution-Based System Identification and Finite Element Model Calibration of the UCLA Factor Building

Buildings
Analysis of wave propagation within buildings in response to earthquakes enables the tracking of changes in dynamic characteristics using impulse response functions.
Fei Wang, Jiemei Ma, Xiandong Kang, Qixuan Liu, Hongyu Chen   +4 more
doaj   +1 more source

Attenuation of Lyman-alpha emission by dust in damped Lyman-alpha systems

The Astrophysical Journal, 1991
We derive relations between the Lyα surface brightness, star formation rate, and abundance of dust in damped Lyα absorption systems. These are idealized as plane-parallel objects in which the sources of Lyα photons are either distributed throughout the gas or confined to a thin, central sheet.
Stephane Charlot, S. M. Fall
openaire   +1 more source

Toward Mechanical Intelligence in Robotics

Advanced Robotics Research, EarlyView.
Robots can use their physical bodies to perform functions usually assigned to electronic sensors and controllers. This perspective defines mechanical intelligence through three core operations: filtering inputs, routing mechanical signals, and switching between states.
Xinyi Yang, Xinyi Ding, Tianyu Wang, Daniel I. Goldman, Shucong Li, Bolei Deng   +5 more
wiley   +1 more source

Innate Immunocompetent hiPSC‐Derived Neurospheroids Capture Early CNS Responses to rAAV

Advanced Science, EarlyView.
Knowledge of human CNS immune responses to AAV‐based gene therapies remains limited due to the lack of immune‐competent human models. Here, a hiPSC‐derived 3D neuroimmune platform integrating neurospheroids and microglia is established using stirred‐tank bioreactors.
Catarina M. Gomes, Gabriela Silva, Mafalda Aleixo, Marta Gomes, Daniel Simão, Stephan J. Holtkamp, Diana D. Lobo, Pradeep Harish, Rosalind Jenkins, Lekh N. Dahal, Rui J. Nobre, Luís de Pereira de Almeida, Mark Trautwein, Paula M. Alves, Catarina Brito   +14 more
wiley   +1 more source

TRAIP Mediates Alcohol‐Induced Liver Injury through Regulating β‐catenin Ubiquitin Degradation via Direct Interaction

Advanced Science, EarlyView.
This study reveals that NF‐κB1‐driven TRAIP upregulation in ALD correlates with disease severity. Mechanistically, TRAIP directly binds β‐catenin via its CC domain and promotes its K48‐linked ubiquitination and degradation, which is independent of the GSK3β/β‐TrCP pathway.
Zhan Wu, Mingjiang Liu, Lijuan Liao, Zhaohong Mo, Wenli Xu, Linfeng Mao, Yubing Chen, Qiuli Xie, Ming Yao, Shilian Chen, Stephen Tomlinson, Sebastian Mueller, Songqing He, Guandou Yuan   +13 more
wiley   +1 more source

Dynamic Response of 3D Concrete Beams with Coated Aggregates Under Wave Propagation Induced by Piezoelectric Actuators: A Simulation Study

Buildings
This research investigates the dynamic response of three-dimensional concrete beams with coated aggregates subjected to transient wave propagation induced by piezoelectric actuators (PZT-lead zirconate titanate).
Yisihak Gebre Tarekegn, Tom Lahmer, Abrham Gebre Tarekegn   +2 more
doaj   +1 more source

Atomic Tuning of Metal‐Support Interactions for Pathway‐Selective CO2 Photoreduction on TiO2

Advanced Science, EarlyView.
Single‐atom Fe and Cu catalysts anchored on TiO2 steer photocatalytic CO2 reduction toward distinct pathways. Fe sites favor rapid *CO desorption and selective CO formation, whereas Cu sites stabilize *CHO intermediates, enabling deep reduction and C─C coupling. Combined spectroscopy and DFT calculations reveal how metal–support interactions and oxygen
Dongyun Kim, Wonjae Ko, Byoung‐Hoon Lee, Sanghoon Kim, Yun Do Kim, Hyunsoo Ahn, Yoon Jung, Chan Woo Lee, Kug‐Seung Lee, Eunhee Gong, Junho Lee, Minho Kim, Taeghwan Hyeon, Su‐Il In   +13 more
wiley   +1 more source