Results 111 to 120 of about 197,878 (297)

Can Distribution Grids Significantly Contribute to Transmission Grids' Voltage Management?

open access: yes, 2016
Power generation in Germany is currently transitioning from a system based on large, central, thermal power plants to one that heavily relies on small, decentral, mostly renewable power generators.
Auer, Sabine   +4 more
core   +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

EcoTRADE : Investigating the suitability of tradable permits for biodiversity conservation in changing landscapes [PDF]

open access: yes
Habitat restoration has been employed in the context of ecological compensation, to offset negative impacts on ecosystems as a result of development projects.
Opdam, P.F.M.   +2 more
core   +1 more source

Neurogenesis and astrogenesis contribute to vestibular compensation in the neurectomized adult cat: cellular and behavioral evidence [PDF]

open access: yes, 2009
Neurogenesis occurs in some regions of the adult mammalian brain and gives rise to neurons integrated into functional networks. In pathological or postlesional conditions, neurogenesis and astrogenesis can also occur, as demonstrated in the deafferented ...
Brahim Tighilet   +4 more
core   +1 more source

Reactive Power Compensation Technologies: State-of-the-Art Review

open access: yesProceedings of the IEEE, 2005
This paper presents an overview of the state of the art in reactive power compensation technologies. The principles of operation, design characteristics and application examples of Var compensators implemented with thyristors and self-commutated converters are presented. Static Var generators are used to improve voltage regulation, stability, and power
Juan W. Dixon   +3 more
openaire   +4 more sources

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

Analysis of Reactive Power Compensation Capacity in Urban Mass Transit Power Supply System

open access: yes机车电传动, 2015
According to the reactive power analysis of urban mass transit supply system, it was expounded that for the reactive power compensation calculation, the power quality evaluation point and power factor value should be clear firstly, and the average ...
ZHOU Weizhi
doaj  

Voltage and reactive power coordinated control strategy for flexible on-load tap changer

open access: yes电力工程技术
As the increasing proportion of renewable energy and power electronic devices in the power grid, voltage fluctuations are becoming frequent. In response to the current voltage regulation and reactive power compensation requirements of the distribution ...
LIU Shui   +4 more
doaj   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz   +3 more
wiley   +1 more source

An optimal strategy for reactive power compensation device allocation and voltage optimization in active distribution networks

open access: yesZhejiang dianli
Current practices for allocating reactive power compensation devices often neglect the comprehensive economic performance arising from the coordinated operation of these devices with other dispatchable resources in active distribution networks (ADNs). To
LI Shuangwei   +5 more
doaj   +1 more source

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