4,517 research outputs found
Apoptosis is prevented by administration of superoxide dismutase in dogs with reperfused myocardial infarction.
No full textLC compensators for power factor correction of nonlinear loads
No full textThis material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. Copyright @ 2004 IEEEA method is presented for finding the optimum fixed LC compensator for power factor correction of nonlinear loads where both source voltage and load current harmonics are present. The LC combination is selected because pure capacitive capacitors alone would not sufficiently correct the power factor. Optimization minimizes the transmission loss, maximizes the power factor, and maximizes the efficiency. The performance of the obtained compensator is discussed by means of numerical examples
LC compensators based on transmission loss minimization for nonlinear loads
No full textThis material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. Copyright @ 2004 IEEEThis paper presents a method employing the penalty function search algorithm to determine the LC compensator value for the optimal power factor correction in nonsinusoidal systems. The objective of the proposed method is to minimize the transmission loss while the power factor and efficiency are taken as constraints and utilized in order to solve the multiobjective optimization problem by transforming it into a single objective one. Examples show that the load nonlinearity can have a significant impact on optimal compensator sizes
Glycolysis is necessary to preserve myocardial Ca2+ homeostasis during beta-adrenergic stimulation.
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GREATER DYSFUNCTION OF NONISCHEMIC MYOCARDIUM DURING ACUTE ANTERIOR VS INFERIOR TRANSMURAL ISCHEMIA
No full textSyrphus nitidifrons Becker 1921
No full textSyrphus nitidifrons Becker, 1921. Regions: CA, LC. Reference: Van Steenis et al. (2013).Published as part of Kočić, Anja, Vujić, Ante, Tot, Tamara, Milosavljević, Marina Janković & Groot, Maarten De, 2023, An updated checklist of the hoverflies (Diptera: Syrphidae) of Slovenia, pp. 189-227 in Zootaxa 5297 (2) on page 218, DOI: 10.11646/zootaxa.5297.2.2, http://zenodo.org/record/799318
Cheilosia faucis Becker 1894
No full textCheilosia faucis Becker, 1894. Region: LC. Reference: Van Steenis et al. (2013).Published as part of Kočić, Anja, Vujić, Ante, Tot, Tamara, Milosavljević, Marina Janković & Groot, Maarten De, 2023, An updated checklist of the hoverflies (Diptera: Syrphidae) of Slovenia, pp. 189-227 in Zootaxa 5297 (2) on page 196, DOI: 10.11646/zootaxa.5297.2.2, http://zenodo.org/record/799318
Maternal separation disrupts noradrenergic control of adult coping behaviors
No full textEarly life stress (ELS) profoundly impacts the brain and correlates with negative affective behaviors in adulthood. The locus coeruleus (LC), a stress-responsive brainstem nucleus that supplies most of the brain with norepinephrine (NE), is known to modulate negative affect. Using repeated maternal separation stress (MSS), we investigated the impact of ELS on the LC and stress-related behaviors in adulthood. We performed ex vivo cell-attached electrophysiology across the lifespan to reveal that MSS significantly increased LC firing during early development and adulthood but not in pre-adolescence and adolescence. We next examined potential changes in the expression of genes linked to LC function. In adulthood, MSS decreased mRNA levels for both the alpha-
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