Results 81 to 90 of about 3,041,653 (403)

Copper’s rapid ascent in visible-light photoredox catalysis

Science, 2019
Spotlight on copper Photoredox catalysis relies on visible-light excitation to accelerate a burgeoning number of chemical reactions. Initially, the technique relied primarily on complexes of precious metals, such as ruthenium or iridium, to absorb the ...
Asik Hossain, A. Bhattacharyya, O. Reiser   +2 more
semanticscholar   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Enhanced Mechanical Properties Via the Incorporation of Ti in Cu Alloys [PDF]

Archives of Metallurgy and Materials
The influence of Ti addition on the microstructure, mechanical properties and electrical conductivity of Cu-14Fe alloy is studied. Great emphasis has been laid on the second phase, texture and mechanical properties.
Huihui Yu, Qiang Hu, Yapan Huang, Yanqi Zeng, Jingxuan Jia, Q. Hu, Rui Hong, Youliang Zhang   +7 more
doaj   +1 more source

Antioxidant High‐Conductivity Copper Pastes Based on Core–Shell Copper Nanoparticles for Flexible Printed Electronics [PDF]

, 2023
Lijing Wang, Fen Xia, Wangshu Xu, Guanghua Wang, Shuqing Hong, Fangwen Cheng, Binghui Wu, Nanfeng Zheng   +7 more
openalex   +1 more source

Unlocking the Power of Quercetin‐Encapsulated Mesoporous Bioactive Glass Nanoparticles: A Multifunctional Approach to Bone Regeneration

Advanced Engineering Materials, EarlyView.
Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello, Qaisar Nawaz, Pier Francesco Ferrari, Laura Pastorino, Roberto Raiteri, Aldo R. Boccaccini   +5 more
wiley   +1 more source

"Asiatic" copper in New Kingdom Egypt [PDF]

, 2015
This work presents a combination of Lead Isotope Analysis ( LIA ) and ancient Egyptian texts and depictions in order to describe the history of the ox -hide copper ingots presence in Egypt , which w ere called by the Egyptians “Asiatic copper”.
Giménez Izquierdo, Francisco Javier
core   +1 more source

A long-term copper exposure on freshwater ecosystem using lotic mesocosms: Individual and population responses of three-spined sticklebacks (Gasterosteus aculeatus) [PDF]

, 2007
Three-spined stickleback (Gasterosteus aculeatus) was used as the highest trophic level predator in an outdoor mesocosm study assessing the effect of environmentally realistic copper concentration (0, 5, 25 and 75 μg L−1) over 18 months of continuous ...
Bonzom, Jean-Marc, Gauthier, Laury, Joachim, Sandrine, Lamothe, Sylvain, Palluel, Olivier, Roussel, Hélène   +5 more
core   +4 more sources

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Accidentes fuera del trabajo: análisis en el campamento minero de Toquepala 2002-2003

Revista Médica Herediana, 2005
En general, todas las empresas desarrollan programas para evitar o minimizar los accidentes del trabajo. Sin embargo, existe escasa información técnica relacionado a la prevalencia y costos derivados de los accidentes fuera del trabajo, lo que dificulta ...
Raúl Gomero Cuadra, Carlos Llap Yesan, Livia Calizaya De la Sota, Ramón Silvera Vallejos   +3 more
doaj  

Influences of Alternating Magnetic Fieldson the Growth Behavior and Distribution of the Primary Fe Phasein Cu-14Fe Alloys during the Solidification Process

Metals, 2018
An alternating magnetic field (AMF) was applied during the solidification process of the Cu-14Fe alloy and the effect of the electromagnetic parameter, which impact the model and solidification technique of the solidification structure that were analyzed.
Jin Zou, De-Ping Lu, Ke-Ming Liu, Qing-Feng Fu, Zhe Zhou   +4 more
doaj   +1 more source