Results 51 to 60 of about 1,976,011 (304)

Provision of secondary frequency regulation by coordinated dispatch of industrial loads and thermal power plants [PDF]

open access: yes, 2019
Demand responsive industrial loads with high thermal inertia have potential to provide ancillary service for frequency regulation in the power market.
Bao, Y   +8 more
core  

Variability of the Heart Rhythm as an Additional Marker for Determining Vegetative Functions in Patients with Chronic Cerebral Ischemia [PDF]

open access: yes, 2018
Aim. Practical cardiology is in constant search for non-invasive vascular risk markers. Heart rhythm reflects the body\u27s response to various stimuli of the external and internal environment. Heart rate variability (HRV) has a prognostic and diagnostic
Inhula, N. (Nataliia)
core   +2 more sources

Impact of variability, uncertainty and frequency regulation on power system frequency distribution [PDF]

open access: yes2016 Power Systems Computation Conference (PSCC), 2016
This work originates from the observation of the frequency distribution of the Irish system as obtained from a Frequency Disturbance Recorder lent to the last author by the University of Tennessee. The probability density function of such a distribution appears to be bimodal.
Zárate-Miñano, Rafael   +3 more
openaire   +1 more source

Psychological Safety Among Interprofessional Pediatric Oncology Teams in Germany: A Nationwide Survey

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Psychological safety (PS) is essential for teamwork, communication, and patient safety in complex healthcare environments. In pediatric oncology, interprofessional collaboration occurs under high emotional and organizational demands. Low PS may increase stress, burnout, and adverse events.
Alexandros Rahn   +4 more
wiley   +1 more source

Bi-layer optimal secondary frequency control approach for energy storage clusters considering wind power uncertainty

open access: yesFrontiers in Energy Research, 2022
Increasing penetration of wind power with intermittency and variability threatens the stability of the power system frequency. The fast response capability of the energy storage system (ESS) makes it an effective measure to improve frequency regulation ...
Zizhao Wang   +4 more
doaj   +1 more source

Exercise Interventions in Children, Adolescents and Young Adults With Paediatric Bone Tumours—A Systematic Review

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Bone tumours present significant challenges for affected patients, as multimodal therapy often leads to prolonged physical limitations. This is particularly critical during childhood and adolescence, as it can negatively impact physiological development and psychosocial resilience.
Jennifer Queisser   +5 more
wiley   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou   +10 more
wiley   +1 more source

Multi‐Stage Virtual Angular Frequency Control of Wind‐Storage Generation System for Frequency Warning Requirements

open access: yesIET Renewable Power Generation
Evaluating the system's frequency regulation requirements using frequency security constraints and achieving rapid frequency response through coordinated wind‐storage control are crucial for ensuring the stable operation of power systems with high ...
Xiangyu Zhang   +3 more
doaj   +1 more source

Modeling a Large-Scale Battery Energy Storage System for Power Grid Application Analysis

open access: yesEnergies, 2019
The interest in modeling the operation of large-scale battery energy storage systems (BESS) for analyzing power grid applications is rising. This is due to the increasing storage capacity installed in power systems for providing ancillary services and ...
Giuliano Rancilio   +6 more
doaj   +1 more source

Sensorless position control of permanent magnet motors with pulsating current injection and compensation of motor end-effects [PDF]

open access: yes, 2011
The sensorless position control of permanent-magnet motors is successfully implemented by superimposing a high-frequency voltage signal on the voltage reference or adding a high-frequency current signal to the current reference.
Cupertino, F.   +3 more
core   +1 more source

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