Results 51 to 60 of about 571 (264)

Impact of variable DC reactors in voltage-source converter based multi-terminal high-voltage DC transmission systems

open access: yesThe Journal of Engineering, 2019
A novel variable DC reactor is proposed to cooperate with DC circuit breaker (DCCB) for breaking DC fault currents, which can satisfy the requirement of fast protection in high-voltage DC grids.
Hui Li
doaj   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

open access: yesMolecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson   +9 more
wiley   +1 more source

Capacitor voltage balancing control with reducing the average switching frequency in MMC

open access: yesThe Journal of Engineering, 2019
Modular multilevel converter (MMC) has a very good application prospect in the flexible high-voltage direct current (HVDC) transmission, but higher self-loss will affect the efficiency and restrict the development.
Shunliang Wang   +4 more
doaj   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

ESR1 methylation and ESR1 mutations in circulating tumor cells (CTCs) and paired plasma‐cfDNA of advanced breast cancer patients: A feasibility proof‐of‐concept study

open access: yesMolecular Oncology, EarlyView.
Circulating tumor cells (CTCs) and plasma cell‐free DNA (cfDNA) were analyzed to detect ESR1 mutations and methylation in patients with advanced breast cancer. CTC‐derived DNA showed higher sensitivity for mutation detection and revealed complementary genetic and epigenetic alterations, highlighting the added value of CTC analysis for understanding ...
Dimitra Stergiopoulou   +12 more
wiley   +1 more source

Design of supply source with several outputs

open access: yes, 2008
The main objective of this work is a design of supply power source with several outputs for a telephone subscriber module. This module consists of two parts.
Lačný, Radek
core   +1 more source

Transient stability analysis of virtual synchronous generator with current saturation by multiple Lyapunov functions method

open access: yesIET Generation, Transmission & Distribution
This paper demonstrates that the switching of one grid‐connected virtual synchronous generator (VSG) between two control modes, namely constant voltage control (CVC) and current limiting control (CLC) happens at the derived two switching lines.
Yujun Li   +4 more
doaj   +1 more source

Control of a synchronverter-based soft open point in a distribution network

open access: yesThe Journal of Engineering, 2019
The presence of distributed generation (DG) in a power distribution network can cause difficulties in managing the voltage, power flow and fault level as the network was designed for supplying passive loads. This study focuses on the control of a back-to-
Ruizhu Wu   +3 more
doaj   +1 more source

Availability assessment of voltage source converter HVDC grids using optimal power flow-based remedial actions

open access: yesHigh Voltage, 2020
This study proposes a methodology for assessing the availability of voltage source converter high-voltage direct current (HVDC) grids based on the enumeration methodology of contingency analysis with N − 2 criteria and makes contributions in the ...
Mario A. Rios   +3 more
doaj   +1 more source

A portable measurement system for subcriticality measurements by the Cf-source-driven neutron noise analysis method [PDF]

open access: yes, 1987
A portable measurement system consisting of a personal computer used as a Fourier analyzer and three detection channels (with associated electronics that provide the signals to analog-to-digital (A/D) convertors) has been assembled to measure ...
Mihalczo, J.T.   +2 more
core  

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