Results 51 to 60 of about 16,653,881 (285)

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

open access: yesAging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

Performance Optimization of Grounding System for Multi-Voltage Electrical Installation

open access: yesApplied Sciences
Grounding systems are critical for ensuring electrical safety, fault current dissipation, and electromagnetic compatibility in power installations across different voltage levels.
Md Tanjil Sarker   +3 more
doaj   +1 more source

Principle of Flexible Ground-Fault Arc Suppression Device Based on Zero-Sequence Voltage Regulation

open access: yesIEEE Access, 2021
Single-line-to-ground (SLG) fault arcs cause the intermittent over-voltages, leading to short circuits within large-scale area. In this paper, a flexible arc suppression device is proposed, which adopts a zigzag grounding transformer, multi-terminal ...
Bishuang Fan   +6 more
doaj   +1 more source

Fault Detection in High Redundancy Actuation Using an Interacting Multiple-Model Approach [PDF]

open access: yes, 2009
The High Redundancy Actuation (HRA) project investigates the use of a relatively high number of small actuation elements, assembled in series and parallel in order to form a single actuator which has intrinsic fault tolerance.
Thomas Steffen (1252947)   +20 more
core   +1 more source

Fault Protection Based on the Ratio of Zero-sequence Current Projection Components for Low-resistance Grounding System

open access: yes, 2021
The electrical characteristics of a single-phase grounding fault in a low-resistance grounding system was aualyzed, and a fault protection scheme was proposed for low-resistance grounding systems according to the ratio of the zero-sequence current ...
Wenping QIN   +4 more
core   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch   +3 more
wiley   +1 more source

Flexible combined grounding modes of large hydro-generators

open access: yesZhongguo dianli
Single-phase grounding fault is the most common fault causing insulation damage to generator stator windings. The grounding transformer high-resistance grounding mode widely used in China cannot address the problem of excessive grounding fault current ...
Xiuhan WU   +8 more
doaj   +1 more source

Fault phase selection of mine power supply system based on frequency distribution theory

open access: yesGong-kuang zidonghua, 2017
In view of the problem of ineffective selection of asymmetric mine neutral point ungrounded system while high resistance grounding occurs, a fault phase selection of mine power supply system based on frequency distribution theory was proposed. Each phase
YU Qun, CHEN Zhihui, HE Ziyua
doaj   +1 more source

Single-Phase Grounding Fault Types Identification Based on Multi-Feature Transformation and Fusion

open access: yes, 2022
The frequent occurrence of single-phase grounding faults affects the reliable operation of power systems. When a single-phase grounding fault occurs, it is difficult to accurately identify the fault type because of the weak characterization and subtle ...
Zhang, Ke   +7 more
core   +1 more source

The PRIMA Thesaurus for Materials Science and Engineering

open access: yesAdvanced Engineering Materials, EarlyView.
The PRIMA Thesaurus is a structured vocabulary designed to improve how materials science data is described and shared. Developed with input from multiple experts, it enables clear documentation of research workflows, data exchange, and reuse across platforms.
Rossella Aversa   +8 more
wiley   +1 more source

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