Results 61 to 70 of about 14,226,728 (252)

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

The ubiquitin system in normal and infected germinal center B cells

open access: yesFEBS Letters, EarlyView.
The ubiquitin system plays a central role in germinal center (GC) B cells, influencing differentiation to long‐lived memory B cells. Oncogenic gammaherpesviruses gain access to memory B cells by establishing latency in GC B cells. Mapping ubiquitin mechanisms in normal and infected GC B cells will define specific molecular circuits in B cells germane ...
Destiny Davis   +2 more
wiley   +1 more source

Research on Reactive Power Hierarchical Coordination Optimization Control Strategy of Wind‐Photovoltaic Hybrid Grid‐Connected System

open access: yesIET Renewable Power Generation
Currently, reactive power compensation in wind‐photovoltaic (PV) hybrid grid‐connected systems is typically controlled independently by the wind farm and PV station, lacking a coordination mechanism between them.
Hong Zhang   +8 more
doaj   +1 more source

About the Possibility of Power Controlling in the Three-Phase Electric Arc Furnaces Using PSCAD EMTDC Simulation Program

open access: yesAdvances in Electrical and Computer Engineering, 2007
The electric arc is a nonlinear element. For this reason it must be used special techniques of modeling the electric arc that should reflect as closely as possible the behavior of the real electric arc.
PANOIU, M.   +3 more
doaj   +1 more source

Voltage Control Method for Active Distribution Networks Based on Regional Power Coordination

open access: yesEnergies, 2019
As loads connected to active distribution network (ADN) grow, ADN’s voltage safety issues are becoming more serious. At present, the solution is mainly to build more distributed generation (DG) or to adjust the reactive power in the whole network ...
Jin-Xin Ou-Yang   +4 more
doaj   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

open access: yesFEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Coordinated Reactive Power Optimal Control Considering the Voltage Security of Wind Farm

open access: yesIET Smart Grid
With the increasing penetration of wind farms (WFs) in power systems, they are demanded to support reactive power to guarantee the economical operation of power grids.
Guanhui Li   +6 more
doaj   +1 more source

Enhanced Singular Value Decomposition Modulation Technique to Improve Matrix Converter Input Reactive Power Control

open access: yesEnergies
Matrix converters (MC) offer a compact, bidirectional solution for power conversion; however, achieving precise reactive power control at the input terminals remains challenging under varying operating conditions. This paper presents an enhanced Singular
Luis Ramon Merchan-Villalba   +3 more
doaj   +1 more source

An optimal reactive power control scheme for rectifying station considering the coordination control of low-voltage reactor and AC system

open access: yesThe Journal of Engineering, 2019
When rectifier station of line-commutated converter based high-voltage direct transmission current has power fluctuations running at large load, reactive power compensator controlled in groups at rectifying station are switched frequently.
Zijia Hui   +5 more
doaj   +1 more source

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