Results 241 to 250 of about 1,410,368 (295)

A Versatile‐Designable Framework for Active and Programmable Shape‐Morphing Soft Matter Systems: From Inverse Design to Closed‐Loop Control

Advanced Science, EarlyView.
A versatile framework integrates addressable electrothermal actuation and strain‐constraint mechanisms to construct programmable shape‐morphing soft matter systems. By combining an analytical inverse design strategy for high‐fidelity 3D surface reconstruction with deep learning‐based closed‐loop control, this approach enables zero‐energy shape locking,
Kai Liu, Peiling Xie, Ruitong Song, Banghan Liu, Rui Guo, Jiu‐an Lv   +5 more
wiley   +1 more source

Strategy of Triple‐Gradient in Binary Pixels for Flexible Pressure Sensing with High Sensitivity and Wide‐Range Linearity

Advanced Science, EarlyView.
A flexible pressure sensor with triple‐gradient design of conductivity, modulus, and dimension in binary micro‐dome pixels is proposed. Based on precisely‐designed CNT/PDMS matrix, the device exhibits a linear sensitivity of 974.1 kPa−1 across range up to 1.8 MPa (R2 > 0.99), offering an effective strategy for potential applications in healthcare ...
Yifan Liu, Xiao Xu, Fengming Hu, Yuanzhe Liang, Zidong Yin, Biao Qi, Ruolin Liu, Ziyi Dai, Jianyi Luo, Bingpu Zhou   +9 more
wiley   +1 more source

A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks

Advanced Science, EarlyView.
Conceptual illustration of a Global Ecosystem Methane Observing System (GEM‐OS) integrating satellites, aircraft, atmospheric networks, and ecosystem measurements to quantify methane emissions from anthropogenic and natural sources. The multi‐scale observing framework improves source attribution, reduces uncertainty in regional methane budgets, and ...
P. Ciais, S. Peng, J. Chang, F. Li, Q. Zhu, K. Yuan, G. Hugelius, H. Li, Y. Cai, F. Chevallier, K. Tibrewal, E. A. Kort, K. Arndt, J. Watts, B. Buma, N. Besic, P. I. Palmer, H. Cadillo‐Quiroz, E. Euskirchen, M. J. Gondwe, A. Hoyt, R. Jackson, S. Malone, D. Monteverde, S. Natali, M. Ramonet, C. Rey‐Sanchez, L. B. Sagang, E. A. G. Schuur, R. Vargas, R. Varner, Z. Zhang, B. Poulter   +32 more
wiley   +1 more source

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Modeling of the Electric Arc Behavior of the Electric Arc Furnace

2013
During the electric arc furnace operation appear disturbances, which can affect the other equipments that are connected to the same power network. So it is necessary to develop models for the electric arc which characterizes the electric arc behavior in order to identify methods and solutions through which the disturbances that appear in the power ...
Manuela Panoiu, Caius Panoiu, Loredana Ghiormez   +2 more
openaire   +2 more sources

The Electric Arc

Transactions of the American Institute of Electrical Engineers, 1927
DEFINITION OF ARC. An arc is a discharge of electricity, between electrodes in a gas or vapor, which has a voltage drop at the cathode of the order of the minimum ionizing or minimum exciting potential of the gas or vapor. ARC CHARACTERISTICS. The relation of arcs to glow discharges and coronas is illustrated by discussion of ``generalized'' curve of ...
openaire   +1 more source

The electric arc as a circuit component

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 2015
This paper presents a mathematical model which describes the behavior of the electric arc in power circuits. The arc is studied like a circuit component. Arc equations are analyzed for static and dynamic situations to define a small signal model. Simulation results and experimental results are given for common arc ignition cases.
Jonathan Andrea, Patrick Besdel, Olivier Zirn, Marc Bournat   +3 more
openaire   +1 more source

Electric arc current control for an electric arc furnace based on fuzzy logic

2015 IEEE 10th Jubilee International Symposium on Applied Computational Intelligence and Informatics, 2015
This paper presents a current control for a three-phase electric arc furnace. In order to do this, a model of the electric arc was used. Using this model, the waveforms for the arc current, arc voltage and voltage-current characteristic of the electric arc were illustrated for different arc lengths.
Loredana Ghiormez, Octavian Prostean
openaire   +2 more sources

Flames from electric arcs

Journal of the A.I.E.E., 1929
The origin of flames from arcs is considered. Their low dielectric strength is attributed to ionization, and their rate of recovery of normal dielectric strength is computed. The large influence of temperature is brought out. Computations are given and experiments described which show how flames can be reduced by passing the arc gases through narrow ...
openaire   +1 more source

Vitrification of electric arc furnace dusts

Waste Management, 2002
Electric arc furnace baghouse dust (EAFD), a waste by-product of the steelmaking process, contains the elements that are volatilized from the charge during the melting (Cr, Pb, Zn, Cu and Cd). The results of leaching tests show that the concentration of these elements exceeds the regulatory limits.
PELINO, Mario, KARAMANOV A, PISCIELLA P., ZANNETI D., CRISUCCI S.   +4 more
openaire   +3 more sources

The Valve Effect of an Electric ARC and Problems in Controlling Electric-ARC Furnaces

Metallurgist, 2015
The reasons for the existence of constant components of current and voltage in electric-arc furnaces are examined. It is noted that the accuracy with which the constant component of arc voltage is evaluated is strongly affected by the method used to sample the voltage signal.
A. V. Sivtsov, O. Yu. Sheshukov, M. M. Tsymbalist, I. V. Nekrasov, D. K. Egiazar’yan   +4 more
openaire   +1 more source