Results 131 to 140 of about 682,225 (309)

Investigation of the impact of planar microelectrodes on macrophage-mediated mesenchymal stem cell osteogenesis

Frontiers in Cell and Developmental Biology
Osseointegration commences with foreign body inflammation upon implant placement, where macrophages play a crucial role in the immune response. Subsequently, during the intermediate and late stages of osseointegration, mesenchymal stem cells (MSCs ...
Hui Chen, Hui Chen, Chuchu Xu, Chuchu Xu, Qin Huang, Qin Huang, Yuhua Chen, Yuhua Chen, Kui Cheng, Huiming Wang, Huiming Wang, Xiaoyi Chen, Xiaoyi Chen   +12 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

DC Flashover in Printed Circuit Boards at Low Gas Pressures: Mechanism and Mitigation Recommendations

IEEE Access
PCB layouts with different polygon shapes and insulation distances were prepared and their surface flashover voltage subjected to different ramping rates were measured at different temperatures and different low gas pressures for emulated high-altitude ...
Jierui Zhou, Mohamadreza Arab Baferani, Tohid Shahsavarian, Patrick McGinnis, Steven Walker, Dehao Qin, Zheyu Zhang, Dong Dong, Di Zhang, Chuanyang Li, Yang Cao   +10 more
doaj   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Molecular Characterization of the Surface Excess Charge Layer in Droplets

, 2020
Charged droplets play a central role in native mass spectrometry, atmospheric aerosols and in serving as micro-reactors for accelerating chemical reactions.
Victor, Kwan, Styliani, Consta
core   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

UV Radiation Influence on Prosthetic PMMA Surface Charge

Nowadays in eye prosthetics and eye lenses produc-tion mostly poly methyl metha acrylate (PMMA) is used be-cause the material excellently fulfills biomedical and aesthetic functions.
Lancere, Linda, Dehtjars, Jurijs
core  

The influence of TiO₂ nanoparticle incorporation on surface potential decay of corona-resistant polyimide nanocomposite films

, 2011
PI nanocomposite films containing surface modified nanoparticles by employing silane coupling agent were prepared using in-situ dispersion polymerization process.
Dang, Zhimin, Yin, Yi, Zha, Junwei, Chen, George   +3 more
core  

Inorganic nanofilms for surface charge control on polymer surfaces by atmospheric-pressure plasma deposition

, 2017
An effective surface charge removal is critical to diverse applications of polymer and other soft organic materials in electrical devices and systems.
Gao, Yuan, Wang, Ruixue, Ren, Chengyan, Kostya (Ken) Ostrikov, Shao, Tao, Lin, Haofan, Ostrikov, Kostya Ken   +6 more
core   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source