Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 89 for “"PMN"”.
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Machining induced defects in Relaxor ferroelectric PMN-PT crystals
… the relaxor based piezoelectric single crystals (PMN-PT) render them as prime candidates for Navy sonar detectors as well as broad band medical ultrasonic imaging devices. Production of phased array probes utilizing these types of high performance ceramics requires dicing these crystals to arrays …
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Mangano oksidu praturtintų PMN-PT keramikų gamyba ir dielektrinis charakterizavimas /
… manganese doped 0.9Pb(Mg1/3Nb2/3)O3–0.1PbTiO3 (PMN-10PT) ceramics, also to investigate their microstructure, electrocaloric and dielectric properties. The electrocaloric (EC) effect, a reversible and adiabatic temperature change induced in a polar material by an external electric field, could be …
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PMN/PT and rutile LAC voltage breakdown dependency with respect to backfill gas, voltage rates of rise, and pressure
Previous work on the breakdown behavior of PMN-PT and TiO2 Lightning Arrester Connectors (LAC) has limited the focus to only a few gasses, pressures and rates of rise of the applied voltage. Through this thesis a more comprehensive look into the breakdown behavior of these LACs and how they respond …
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X-Ray Scattering Study of the Transition Dynamics in Relaxor Ferroelectric Lead (Magnesium(1/3) Niobium(2/3)) Oxygen(3) (Pmn)
Thermal diffuse scattering measurements were performed at several temperatures. A [011] transverse optic soft mode was determined to exist. The temperature dependence of this phonon mode was carefully studied as the transition is approached, and down to 40 K. The q-dependency of the freezing …
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Host-Defense Function of Anuclear Polymorphonuclear Neutrophil in Lung Injury
Polymorphonuclear neutrophils (PMN) function through rapid mobilization to the site of infection and are primary effectors of the innate immune response. Activated PMN extrude genomic DNA to form web-like structures called Neutrophil Extracellular Traps (NETs). After NET release (NETosis), the PMN …
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Die fibrinogenabhängige Interaktion von polymorphkernigen Granulozyten und Thrombozyten und ihre Bedeutung im reperfundierten Herzen
… Thrombozyten und polymorphkernigen Granulozyten (PMN), sowie die Ausbildung von Thrombozyten-PMN Koaggregaten vestärkt. Zudem war von Interesse, ob diese Koaggregate zum Reperfusionsschaden beitragen und inwieweit der GPIIb/IIIa Rezeptor Antagonist Abciximab (c7E3Fab) die PMN-Thrombozyten …
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Somatolactogenic hormones and interferon-gamma as regulators of neutrophil activation
… in activating polymorphonulear neutrophils (PMN) from pigs, cows, rats and humans to kill Escherichia coli and secrete superoxide anion (O$\sb2\sp-$) after stimulation with phorbol myristate acetate (PMA). GH, as well as its growth promoting peptide, insulin-like growth factor-I (IGF-I), were …
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Implication des mitochondries plaquettaires dans la modulation du phénotype inflammatoire des neutrophiles humains
… dont les plaquettes et les neutrophiles (PMN), sont impliqués. Les PMN sont les leucolytes le plus communs en circulation, comptant 60% des leucocytes. Ils vont participer à la réaction immunitaire en reconnaissant des pathogènes ou des motifs moléculaires de dommages (DAMPs) avec leurs …
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Staphylococcus aureus virulence factors dictate host signaling pathways and immune responses
… and subsequent polymorphonuclear leukocyte (PMN) responses. Intracellular S. aureus increased thrombomodulin expression by MEC and activated protein C (APC) production. APC inhibited PMN chemotaxis. Findings depicted an indirect role for VF on PMN responses, so next we determined signaling …
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POLYMETALLIC NODULE ABUNDANCE ESTIMATION USING SIDESCAN SONAR: A QUANTITATIVE APPROACH USING ARTIFICIAL NEURAL NETWORK
… Zone (CCFZ) are pockets of Polymetallic Nodules (PMN). These PMN possess high economic potential as they are rich in minerals such as manganese, nickel, copper and rare earth elements. Quantification of such PMN coverage is important for economic feasibility studies and planning of exploitation …
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Impact of cationic host defence peptide LL-37 on human neutrophil death and inflammatory responses
… and inflammatory processes. Neutrophils (PMN) are the main reservoir of cathelicidins and play key roles in first line defence against infection. The appropriate regulation of PMN function, death, and clearance is critical to innate immunity, and the efferocytosis of apoptotic PMN, in …
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Efeito da despolarização da membrana plasmática na modulação da apoptose de neutrófilos mediada por lipopolissacarídeo
… e expressão da Caspase-3 em neutrófilos (PMN). MÉTODOS: PMN foram isolados de sangue de voluntários por gradiente de densidade e cultivados por 18h em meios com concentração normal (1.8mM) ou baixa de cálcio (<10nM), ou com ouabaína (1mM), um inibidor da sódio/potássio ATPase. A apoptose …
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Functional characterization of equine neutrophils in response to calcium ionophore A23187 and phorbol myristate acetate
Equine neutrophils (PMN) play a critical role in inflammatory processes in horses. The objective of this study was to characterize equine PMN function ex vivo following stimulation with calcium ionophore A23187 (A23187) and phorbol myristate acetate (PMA). These stimulants trigger different …
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Corneal Wound Healing: Cells and Molecules
… inflammatory response involving neutrophil (PMN) and platelet extravasation from the limbus. While these cells deliver important growth factors that promote wound healing, resolution of the inflammatory response (i.e., PMN clearance) is also needed to restore corneal homeostasis. This …
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The Effect of Acute Exercise on Neutrophils and Oxidative Stress.
… the most significant elevations in neutrophil (PMN) counts and blood oxidative stress (OS). This study also tested the hypothesis that active individuals have a blunted PMN and OS responses to acute exercise as compared to less active individuals. Nine males (18 – 30 yrs.) participated in 1 …
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Molecular analysis of vesicle biogenesis during autophagy
… (piecemeal microautophagy of the nucleus; PMN) occurs at nucleus-vacuole (NV) junctions and results in the pinching-off and release of nonessential portions of the nucleus into the vacuole. In contrast to previous published results Krick et al. showed in a recent publication that PMN …
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The Effects of Chronic Ethanol Ingestion and Smoke Exposure on Anti-Pneumococcal Host Defenses
… exposure and EtOH ingestion on non-neutrophil (PMN)-mediated killing of pneumococci was investigated using an in vivo bactericidal assay. EtOH ingestion significantly decreased the percentage of pneumococci killed within the rats’ lungs. Unexpectedly, this EtOH-induced defect was counteracted by …
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Integrin Modulating Factor 1 (IMF-1): A lipid that modulates leukocyte integrins
<p>Polymorphonuclear leukocytes (PMN) express a receptor of the integrin family termed complement receptor type 3 (CR3, also known as α<sub>M</sub>β<sub>2</sub>, Mac-1, Mo1, or CD11b/CD18) that functions in several cell-cell and cell-substratum adhesion events. The capacity of CR3 to mediate …
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Circadian Flux of Extravascular Polymorphonuclear Leukocytes in the Mouse Limbus
… cornea, a recent study suggests extravascular PMNs are found at the limbus and their numbers rise and fall in a circadian rhythm, peaking in the evening. Additional studies in other tissues suggest metabolic syndrome resulting from the consumption of a HFD is associated with circadian …
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