Results 61 to 70 of about 199,554 (295)

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Transient Voltage Stability Analysis of the Dual-Source DC Power System

Energies
This paper analyzes the transient voltage stability of the dual-source DC power system. The system’s equivalent model is first established. Subsequently, the effect mechanisms of line parameters and voltage-source rectifiers’ current control inner loops ...
Yi Lei, Yang Li, Feng Zhao, Yelun Peng, Zhen Mei, Zhikang Shuai   +5 more
doaj   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

FEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang, Zelin Cheng, Teng Li, Fulian Wang, Liangminghui Zhang, Xiuxiu He, Lili Liu, Wei Wang, Aibin Liang, Guang Yang   +9 more
wiley   +1 more source

Transient Stability of V_dc – Q Control-Based PV Generator With Voltage Support Connected to Grid Modelled as Synchronous Machine

IEEE Access, 2020
The increasing penetration of PhotoVoltaic (PV) generation has a significant impact on the transient stability of power systems. Power electronics interface, control strategies and lack of inherent rotational element are the main factors that distinguish
Indla Rajitha Sai Priyamvada, Sarasij Das   +1 more
doaj   +1 more source

Output feedback transient stabilization and voltage regulation of synchronous generators [PDF]

International Journal of Robust and Nonlinear Control, 2011
SUMMARYIn this brief note, we consider the transient stabilization and voltage regulation problem for a synchronous generator connected to an infinite bus. We show how a much simpler output feedback controller, compared with previous results, can be obtained if a different stability analysis is carried out: a suitable change of coordinates is performed
VERRELLI, CRISTIANO MARIA, Damm, G.
openaire   +5 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

PCC Voltage Compensation Scheme of MMC-MTDC System for Transient Stability Enhancement Under Communication Delay

IEEE Access, 2020
Multi-terminal High Voltage Direct Current (MTDC) with modular multilevel converter (MMC) is a promising technology, because it integrates diverse energy resources.
Xichang Wen, Jianchun Peng, Saddam Aziz, Hui Jiang   +3 more
doaj   +1 more source

The transient instability mechanism and stability‐enhanced LVRT control for VSC riding‐through severe grid voltage sag

IET Renewable Power Generation, 2023
As the grid‐connected interface device of wind and photovoltaic power generation, the voltage source converter (VSC) must pass the low voltage ride‐through (LVRT) test. However, existing literature demonstrates that under weak grid conditions, there is a
Huiqiang Sun, Xinchun Lin, Guangzhou Huang, Jiayan Zhang, Dan Liu, Kezheng Jiang, Yong Kang   +6 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Applying series braking resistors to improve the stability of low inertia synchronous generators [PDF]

, 2007
Widely held concerns over the environmental impact of emissions from large fossil fuelled generating plants are serving to promote the connection of renewable or sustainable generation onto distribution networks.
Anaya-Lara, Olimpo, Bright, C.G., Burt, G.M., McDonald, J.R., Tumilty, R.   +4 more
core