Results 211 to 220 of about 45,471 (252)

Memristor‐Driven Active‐Matrix Organic Light‐Emitting Diode for Energy Efficient and High‐Resolution Displays

Advanced Functional Materials, EarlyView.
This study demonstrates that memristors can replace conventional 2T–1C driving circuits with simplified 1T–1 m architectures by exploiting resistance switching. With ultra‐low switching voltages (< ±0.2 V) and multi‐level resistance states, the memristors precisely control the current injected into organic light‐emitting diodes (OLEDs).
Dong Hyun Kim, Nahyun Kim, Seok Hee Hong, Ho Jin Lee, Jin Suk Oh, Jae Seong Park, Tae Geun Kim   +6 more
wiley   +1 more source

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

Advanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi, Norma Mallegni, Andrea Dorigato, Mario Milazzo   +3 more
wiley   +1 more source

Surface Electromyography in Dentistry-Past, Present and Future. [PDF]

J Clin Med
Zieliński G, Gawda P.
europepmc   +1 more source

Carbon Shell‐Encapsulated PtFe Catalysts in High Temperature Polymer Electrolyte Membrane Fuel Cells: Balancing Molecular Sieving and Diffusion for Enhanced Reactant Access

Advanced Functional Materials, EarlyView.
Scanning electrochemical microscopy reveals reactant diffusion through porous carbon shells to PtFe cores, while the carbon‐encapsulated PtFe enables high‐performance HT‐PEMFC operation by sieving phosphate ions that induce catalyst poisoning. ABSTRACT High‐temperature polymer electrolyte membrane fuel cells (HT‐PEMFCs) operating at 160°C on phosphoric
Myeong‐Geun Kim, Sourabh S. Chougule, Suji Lee, Young Sang Park, Jihyun Choi, Katie Heeyum Lim, Albert S. Lee, Hyun S. Park, Namgee Jung, Sung Jong Yoo   +9 more
wiley   +1 more source

Construction of urban low-carbon development and sustainable evaluation system based on the internet of things. [PDF]

Heliyon
Guan H.
europepmc   +1 more source

Mountains of Gold: The Alpine Vaults of the Swiss National Bank, 1939-46. [PDF]

J Contemp Hist
Groen L.
europepmc   +1 more source

Urgent needs for second life using and recycling design of wasted electric vehicles (EVs) lithium-ion battery: a scientometric analysis. [PDF]

Environ Sci Pollut Res Int
Zahoor A, Kun R, Mao G, Farkas F, Sápi A, Kónya Z.   +5 more
europepmc   +1 more source

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Synchronous electric drive of an elevator operating in close control system

Russian Electrical Engineering, 2009
A sample synchronous motor with permanent magnets has been tested in the model of a gearless drive and the results are presented. With the help of mathematical simulation, comparative calculations of synchronous motors with different geometrical sizes are carried out for two types of elevators.
V. I. Afonin, R. V. Rodionov
exaly   +2 more sources

Energy consumption of elevator electric drives with different control systems

Russian Electrical Engineering, 2011
The power consumption of elevator electric drives with different control systems is analyzed. Rated and experimental observations for operating elevator installations are compared. The criteria of the power efficiency of the installations and their electric motors are considered.
V. I. Afonin, O. V. Kruglikov, R. V. Rodionov   +2 more
exaly   +2 more sources

Implementation and performance analysis of an elevator electric motor drive system

2008 12th International Middle-East Power System Conference, 2008
The focus of this paper is the implementation and performance analysis of an elevator three-phase induction motor drive and its comparison to the traditional dual stator winding line-supplied elevator motors. To carry-on this study, a scaled prototype elevator is designed and manufactured. The elevator system motion controller is implemented via a PLC.
Mohamed Osama, Omar Abdul_Azim
exaly   +2 more sources