Results 131 to 140 of about 819,463 (377)

A Review of Control Strategies for Four-Switch Buck–Boost Converters

open access: yesWorld Electric Vehicle Journal
In order to meet the demand for high-voltage architectures of 400 V and 800 V in electric vehicle systems, high-power DC-DC converters have become a key focus of research.
Guanzheng Lin, Yan Li, Zhaoyun Zhang
doaj   +1 more source

Energy security issues in contemporary Europe [PDF]

open access: yes, 2018
Throughout the history of mankind, energy security has been always seen as a means of protection from disruptions of essential energy systems. The idea of protection from disorders emerged from the process of securing political and military control over ...
Abrhám, Josef   +3 more
core  

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Power Processing Unit For Micro Satellite Electric Propulsion System

open access: yesE3S Web of Conferences, 2017
The Micro Satellite Electric Propulsion System (MEPS) program has been originated by the increasing need to provide a low-cost and low-power Electric Propulsion System (EPS) for small satellites ( 92%), small size and weight and high reliability.
Savvas Spiridon   +9 more
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Electricity liberalisation: the beginning of the end [PDF]

open access: yes, 2004
The debate is beginning to shift a little on electricity liberalisation and privatisation, but there are many vested interests that will continue to promote the ...
Thomas, Stephen
core  

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

open access: yesAdvanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng   +7 more
wiley   +1 more source

Dissimilitudes of the Technical-Urbanistic Endowment between the Centre and the Outskirts of the Urban of Cluj County [PDF]

open access: yesRomanian Review of Regional Studies, 2006
The technical town endowment (drinking and industrial water supplies, sewerage, district heating, natural gas and electric power supplies, telecommunication, access to means of transportation) represents a basic condition in assuring the quality standard
LELIA PAPP
doaj  

Electricity privatisation and restructuring in Asia-Pacific [PDF]

open access: yes, 2004
Overview of privatisation, liberalisation and restructuring of electricity in Asia-Pacific, including survey of multinational and regional ...
Corral, Violeta   +2 more
core  

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