نتایج جستجو برای: lfo

تعداد نتایج: 134  

2016
Vijay Kumar Tayal J. S. Lather L. A. Zadeh D. W. Shimmin R. M. Tong M. B. Beck

In this paper a linearized Heffron-Philips model of a Single Machine Infinite Bus power system with a Fuzzy Logic Power System Stablizer (PSS) is developed. The designed fuzzy-based PSS adjusts two inputs by appropriately processing of the input angular speed and angular acceleration signal, and provides an efficient damping. The behavior of the SMIB system with & without PSS has been compared/...

2013
Elizabeth V. Jeney James N. Baraniuk Irene Kim Scott D. Meredith Michael A. Kaliner

The antimicrobial proteins lactoferrin (Lf) and lysozyme (Ly) are invariably found in nasal secretions. To investigate the cellular sources and the secretory control of these nasal proteins in vivo, 34 adult subjects underwent nasal provocation tests with methacholine (MC), histamine (H), and gustatory stimuli. Nasal lavages were collected and analyzed for total protein (TP), albumin (Alb), Lf,...

2016
Jung-Ick Byun Ki-Young Jung Gwan-Taek Lee Choong-Ki Kim Beop-Min Kim

BACKGROUND AND PURPOSE Periodic limb movements (PLM) during sleep (PLMS) are associated with cortical and cardiovascular activation. Changes in cerebral hemodynamics caused by cortical activity can be measured using near-infrared spectroscopy (NIRS). We investigated oscillatory components of cerebral hemodynamics during PLM and different sleep stages in restless legs syndrome (RLS) patients wit...

2017
Youjun Li Hongxiang Yao Pan Lin Liang Zheng Chenxi Li Bo Zhou Pan Wang Zengqiang Zhang Luning Wang Ningyu An Jue Wang Xi Zhang

Alzheimer's disease (AD) is a neurodegenerative disorder associated with the progressive dysfunction of cognitive ability. Previous research has indicated that the default mode network (DMN) is closely related to cognition and is impaired in Alzheimer's disease. Because recent studies have shown that different frequency bands represent specific physiological functions, DMN functional connectivi...

2014
Fuqing Zhou Honghan Gong Xiaojia Liu Lin Wu Keith Dip-Kei Luk Yong Hu

Decreases in metabolites and increased motor-related, but decreased sensory-related activation of the sensorimotor cortex (SMC) have been observed in patients with cervical myelopathy (CM) using advanced MRI techniques. However, the nature of intrinsic neuronal activity in the SMC, and the relationship between cerebral function and structural damage of the spinal cord in patients with CM are no...

2004
Bernd SCHMIDT Elmar WACHTER Walter SEBALD Walter NEUPERT

Subunit 9 (dicyclohexylcarbodiimide binding protein, ‘proteolipid’) of the mitochondrial F lFo-ATPase is a nuclearly coded protein in Neurospora crassa. It is synthesized on free cytoplasmic ribosomes as a larger precursor with an NH2-terminal peptide extension. The peptide extension is cleaved off after transport of the protein into the mitochondria. A processing activity referred to as proces...

Journal: :Psychiatry Research: Neuroimaging 2017
Fabio Sambataro Eleonora Visintin Nadja Doerig Janis Brakowski Martin Grosse Holtforth Erich Seifritz Simona Spinelli

Major depressive disorder (MDD) has been associated with alterations in several functional brain networks. Previous studies investigating brain networks in MDD during the performance of a task have yielded inconsistent results with the function of the brain at rest. In this study, we used functional magnetic resonance imaging at rest and during a goal-directed task to investigate dynamics of fu...

2016
Martin Meyer Friederike Kienzler-Norwood Sebastian Bauer Felix Rosenow Braxton A. Norwood

Following prolonged perforant pathway stimulation (PPS) in rats, a seizure-free "latent period" is observed that lasts around 3 weeks. During this time, aberrant neuronal activity occurs, which has been hypothesized to contribute to the generation of an "epileptic" network. This study was designed to 1) examine the pathological network activity that occurs in the dentate gyrus during the latent...

Journal: :Sustainability 2023

Access to inexpensive, clean energy is a key factor in country’s ability grow sustainably The production of electricity using fossil fuels contributes significantly global warming and becoming less profitable nowadays. This work therefore proposes study the different possible scenarios for replacement light fuel oil (LFO) thermal power plants connected electrical network northern Cameroon by re...

Journal: :International Journal of Circuit Theory and Applications 2023

Summary Modern power networks are enormously complex and frequently interconnected by weak tie‐lines, which results in a variety of stability issues such as low frequency oscillations (LFOs). LFOs can have negative impact on system tie‐line transmission capacity, resulting catastrophic blackouts if suitable damping control mechanisms not situ. This article demonstrates robust design for inter‐a...

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