Results 11 to 20 of about 10,047 (211)

Solidification of Al alloys under electromagnetic pulses and characterization of the 3D microstructures under synchrotron x-ray tomography [PDF]

, 2015
A novel programmable electromagnetic pulse device was developed and used to study the solidification of Al-15 pct Cu and Al-35 pct Cu alloys. The pulsed magnetic fluxes and Lorentz forces generated inside the solidifying melts were simulated using finite
Andrew J. Bodey, C. Song, C.Y. Ho, Christoph Rau, D. Bernard, E. Basham, E.G. Bakhoum, E.O. Hall, G.I. Eskin, G.N. Ramachandran, G.P. Jones, J.A. Dantzig, J.A. Wert, Jiawei Mi, L. Li, M. Garnier, M. Guo, M. Johnsson, M.C. Flemings, M.J. Li, N. Pei, N.Y. Konstantinova, P. Koltun, Peter Lobo Kazinczi, Q. Li, S. Asai, S. Bartkevičius, S. Dan, S. Eckert, S. Tamirisakandala, S. Titarenko, S.D. Pawar, S.H. Hanhn, T. Campanella, Theerapatt Manuwong, W. Dai, Wei Zhang, X. Li, Y. Du, Y. Plevachuk, Y.J. Zhang, Z. Shu-cai, Z.X. Yin   +42 more
core   +1 more source

Power electronics options for large wind farm integration : VSC-based HVDC transmission [PDF]

, 2006
This paper describes the use of voltage source converter based HVDC transmission (VSC transmission) system for grid integration of large wind farms over long distance.
Sasse, C., Xu, L., Yao, L.
core   +2 more sources

A novel automatic voltage control architecture based on the infrastructures in the smart grid [PDF]

, 2012
The smart distribution system is one of the most important aspects of the smart grid and will result in systematic update on the distribution side. In smart distribution grid pilot cities of China, much investment on the infrastructure for the smart ...
Hou, Y, Lin, Y, Sun, M
core   +1 more source

Multi-Objective Optimization for the Location and Sizing of Capacitor Banks in Distribution Grids: An Approach Based on the Sine and Cosine Algorithm

Applied System Innovation
This article presents a hybrid optimization model designed to determine the optimal location and operation of capacitor banks in medium-voltage distribution networks, aiming to reduce energy losses and enhance the system’s economic efficiency. The use of
Laura Camila Garzón-Perdomo, Brayan David Duque-Chavarro, Carlos Andrés Torres-Pinzón, Oscar Danilo Montoya   +3 more
doaj   +1 more source

Guaranteeing the trouble-free operation of capacitor banks in power-supply systems of industrial enterprises [PDF]

, 2016
The problem of resonance phenomena in power systems of industrial enterprises using capacitor banks for reactive power compensation was detected. Circuit of the capacitor banks tier to downshift main substation tires ispresent.
Bederak, Ya. S., Gapon, D. A.
core   +3 more sources

High Performance, Continuously Tunable Microwave Filters using MEMS Devices with Very Large, Controlled, Out-of-Plane Actuation

, 2018
Software defined radios (SDR) in the microwave X and K bands offer the promise of low cost, programmable operation with real-time frequency agility. However, the real world in which such radios operate requires them to be able to detect nanowatt signals ...
Beacken, Marc, Bishop, David J., Chang, Jackson, Holyoak, Michael, Imboden, Matthias, Kannell, George   +5 more
core   +1 more source

Graphical Models for Optimal Power Flow [PDF]

, 2016
Optimal power flow (OPF) is the central optimization problem in electric power grids. Although solved routinely in the course of power grid operations, it is known to be strongly NP-hard in general, and weakly NP-hard over tree networks.
Chertkov, Michael, Dvijotham, Krishnamurthy, Misra, Sidhant, Van Hentenryck, Pascal, Vuffray, Marc   +4 more
core   +2 more sources

Energy harvesting from vehicular traffic over speed bumps: A review [PDF]

, 2018
Energy used by vehicles to slow down in areas of limited speed is wasted. A traffic energy-harvesting device (TEHD) is capable of harvesting vehicle energy when passing over a speed bump. This paper presents a classification of the different technologies
Blanco-Fernandez, E., Castro-Fresno, D., Del Castillo-García, G., Pascual-Muñoz, P.   +3 more
core   +3 more sources

A Bio-Inspired Two-Layer Mixed-Signal Flexible Programmable Chip for Early Vision [PDF]

, 2003
A bio-inspired model for an analog programmable array processor (APAP), based on studies on the vertebrate retina, has permitted the realization of complex programmable spatio-temporal dynamics in VLSI.
Carmona Galán, Ricardo, Domínguez Castro, Rafael, Espejo Meana, Servando Carlos, Jiménez Garrido, Francisco José, Petrás, István, Rekeczky, Csaba, Rodríguez Vázquez, Ángel Benito, Roska, Tamás   +7 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source