Results 61 to 70 of about 19,868 (354)
Известия высших учебных заведений. Поволжский регион:Технические наукиBackground. Improving the reliability of printed circuit boards is associated with reducing the level of their defects in the production process. The task of forecasting the level of defects is especially relevant in a situation where an enterprise ...
A.A. Troshin, I.V. Balakhonova
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CFD–DEM simulation of fluid–solid flow of a tapered column separation bed
International Journal of Mining Science and Technology, 2015 Research on recycling waste Printed Circuit Boards (PCB) is at the forefront of preventing environmental pollution and finding ways to recycle resources.
Chenlong Duan +4 more
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Dual‐Mode Magnetic Elastomer for On‐Demand Motion and Degradation
Advanced Functional Materials, EarlyView.A dual‐mode magnetic elastomer is introduced, enabling DC field‐driven programmable actuation and AC field‐driven magnetothermal degradation. GHz‐range magnetic fields generate ultrafast heating of magnetic nanoparticles that activates cleavage of the silicone elastomer matrix.
Jieun Han +13 more
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, 2012 The protocol data rate governing data storage devices will increase to over 12 Gb/s by 2013 thereby imposing unmanageable cost and performance burdens on future digital data storage systems.
Dangel, R +8 more
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Convergence acceleration and accuracy improvement in power bus impedance calculation with a fast algorithm using cavity modes [PDF]
, 2005 Based on the cavity-mode model, we have developed a fast algorithm for calculating power bus impedance in multilayer printed circuit boards. The fast algorithm is based on a closed-form expression for the impedance Z matrix of a rectangular power bus ...
Wang, Zhi Liang +7 more
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3D Printing Innovations in Polymeric Porous and Patterned Architecture
Advanced Functional Materials, EarlyView.Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil +13 more
wiley +1 more source
Hydrometallurgical Treatment of Waste Printed Circuit Boards: Bromine Leaching
Metals, 2020 This paper demonstrates the recovery of valuable metals from shredded Waste Printed Circuit Boards (WPCBs) by bromine leaching. Effects of sodium bromide concentration, bromine concentration, leaching time and inorganic acids were investigated.
Hao Cui, Corby Anderson
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A note on a motion control problem for a placement machine. [PDF]
Assembling printed circuit boards effciently using automated placement machines is a challenging task. Here, we focus on a motion control problem for a specific type of placement machines.
Coene, Sofie +3 more
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Advanced Functional Materials, EarlyView.First vacuum formed spherical triboelectric converter for 3D‐omnidirectional ultrasonic energy receiving, with configurable DC or pulse outputs for versatile applications. ABSTRACT Ultrasound‐driven triboelectric nanogenerators (UD‐TENGs) have emerged as promising ultrasonic energy converters for underwater and biomedical applications.
Yanqin Huang +12 more
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, 2017 The electrochemical migration (ECM) behavior of copper-clad laminate (PCB-Cu) and electroless nickel/immersion gold printed circuit boards (PCB-ENIG) under thin electrolyte layers of different thicknesses containing 0.1 M Na2SO4 was studied.
Li, Xiaogang +9 more
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