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Showing 1 to 20 of 32 for “"RFA"”.
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Improving document representation by accumulating relevance feedback : the relevance feedback accumulation (RFA) algorithm
… called the Relevance Feedback Accumulation (RFA) algorithm is presented. The algorithm provides a mechanism to continuously accumulate relevance assessments over time and across users. It also provides a document representation modification function, or document representation learning …
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Evaluation eines hepatischen Perfusionsindex zur Früherkennung von Tumorrezidiven nach RFA und Erkennung von Leber-Malignomen bei Leberzirrhose
… relapse after hepatic radiofrequency ablation (RFA) and for malignant liver tumor in liver cirrhosis. Quantitative AEF color maps of the whole liver were computed from triple phase contrast-enhanced multislice computed tomography (MSCT) images. Follow-up examinations served as standard of …
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Eficiência de uso da radiação fotossinteticamente ativa pelo tomateiro cultivado em diferentes ambientes
… de radiação fotossinteticamente ativa (RFA) interceptada e absorvida pelas folhas, bem como à eficiência com que estas convertem a energia radiante em energia química, através da fotossíntese. Esta capacidade de conversão é considerada como sendo a eficiência de uso da RFA. Com o …
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Harnessing the Immunomodulatory Potential of Radiofrequency Ablation to Improve Therapeutic Outcomes in Pancreatic Ductal Adenocarcinoma
… ultrasound-guided radiofrequency ablation (EUS-RFA). However, there is still minimal understanding around its wider impact on stromal remodeling and immunological activation. This study investigates the immunomodulatory effects of RFA combined with neoadjuvant chemotherapy in clinical samples …
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Computer simulation of a novel technique for Radio-Frequency Ablation of ventricular arrhythmias
… treatment for VT is Radio-Frequency Ablation (RFA), which is minimally invasive, but requires maintenance of VT until the target site for ablation is determined. Most patients with VT cannot tolerate this maintenance phase due to hemodynamic instability and for those who are hemodynamically …
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Improving the safety and efficacy of bimodal electric tissue ablation.
… of electrolysis with radiofrequency ablation (RFA) to increase the size of tissue ablations. The cathode of the electrolytic circuit is connected to the radiofrequency (RF) electrode to increase the surrounding tissue hydration. This allows the RFA process to continue for a longer period of …
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An Investigation into the Application of Formal Decision Making Techniques to Design Alterations and Additions (As&As) for Vessels of the Royal Fleet Auxiliary (RFA)
The Royal Fleet Auxiliary (RFA) is a flotilla of ships, owned by the United Kingdom (UK) Ministry of Defence (MoD), which serves to resupply naval vessels during worldwide operations. Design Alterations and Additions (As&As) are implemented throughout their service lives in order to ‘Upgrade’ and …
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The Osseointegration of Magnesium Oxidized Implant
… the 1960s. Titanium implants have a thin oxide surface layer and the properties of this layer may explain the good biocompatibility. Recently, anodization of the implant surface is on the rise as a way to improve the osseointegration. The aim of this study is to compare the osseointegration …
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A device user interface for the guided ablative therapy of cardiac arrhythmias
Radio Frequency Ablation (RFA) of cardiac arrhythmias involves the guidance of an ablation catheter to the site of the arrhythmia and the administration of a high-intensity radio-frequency current to the tissue. The current technique used to locate the arrhythmic site suffers from a number of …
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Processing and properties of recycled aggregate concrete
… test with using recycled fine aggregates(RFA) was performed and fly ash was used to reduce shrinkage of RAC. As RFA increases, the shrinkage of the specimen also increased because RFA is composed with mortar which plays an important role in volume of porosity.
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Thermal Ablation Alters The Tumor Microenvironment Activating A Robust Immune Response.
… techniques including radiofrequency ablation (RFA) and cryoablation have been shown to influence the immune system in animal models. Rare abscopal events, a distant metastatic response to a local procedure, have been observed in humans following both RFA and cryoablation. These rare …
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Expresión diferencial de reactantes de fase aguda en distintos tipos celulares de pacientes con enfermedad pulmonar obstructiva crónica
… y base de nuestro estudio. Existe producción de RFA por el tejido pulmonar siendo ésta diferente según el territorio y el tipo celular analizado y variando entre pacientes con EPOC frente a fumadores sanos, de manera que su síntesis se encuentra relacionada con la presencia de la enfermedad. …
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Comparación de la producción local y sistemática de mediadores inflamatorios en distintos grupos celulares de pacientes con enfermedad pulmonar obstructiva crónica
… hemos tratado de comparar la expresión génica de RFA tanto a nivel local, en el parénquima pulmonar y tejido vascular de arteria pulmonar, como a nivel sistémico, en células sanguíneas y plasma, de pacientes con EPOC y fumadores sin la enfermedad. Posteriormente comparamos la síntesis de estos …
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Geochemistry of Holocene coastal deposits (NW Germany): palaeoenvironmental reconstruction
… Küstenraum. Die erbohrten Kerne erfassen die gesamten holozänen Ablagerungen und wurden in hoher Auflösung u.a. mittels RFA, ICP-OES und ICP-MS auf ihre anorganisch-geochemische Zusammensetzung untersucht. Hauptziel der Arbeit ist es, Erkenntnisse über Art und Herkunft des …
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Haupt- und Spurenelementchemismus von Unterkreidesedimenten (Apt / Alb) aus dem Niedersächsischen Becken
… (Apt/Alb) Nordwestdeutschlands. Mittels RFA, Coulometrie, ICP-MS und weiterer Methoden wurden ca. 550 Proben zweier Kernbohrungen (Kirchrode II/94, Hoheneggelsen KB40) aus dem Raum Hannover auf ihre Haupt- und Spurenelementzusammensetzung (u.a. REE, As, Se, Cd) und teilweise auch auf …
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Performance of concrete made with commercially produced recycled coarse and fine aggregates in the Cape Peninsula
… coarse aggregate (RCA) and fine aggregate (RFA) were continuously graded. Stone content was the main component in the RA, with mass fraction of about 58%. Stone/mortar conglomerate (concrete) comprised about 21 %, mortar comprised 12% and bricks comprised 8%. Other impurities such as wood, …
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Crustal structure and tectonics of Borneo and Sulawesi: results from receiver function analysis and virtual deep seismic sounding
… before being recorded by stations on the surface. I utilise both receiver function analysis (RFA) and virtual deep seismic sounding (VDSS) to extract information from mode converted and reflected phases to constrain seismic properties including Moho depth, V_S and V_P 〖/V〗_S. In the case of …
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Anorganische Geochemie zyklischerSedimente aus dem östlichen Mittelmeer: Rekonstruktion derPaläoumweltbedingungen
… Sedimentkernen entnommen. Diese wurden mittels RFA, Coulometrie, ICP-MS und anderen Methoden auf deren Elementzusammensetzung und z.T. auch auf Isotopenverhältnisse hin analysiert. Ziel der Untersuchungen war die Erforschung der sich periodisch ändernden Paläoumweltbedingungen im Mittelmeer. Als …
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An investigation of biosurfactant-mediated disruption and biological activity in mature biofilms formed on plastic surfaces by LPS mutants of Salmonella enterica serovar Typhimurium
… and increasing the risk of spread. Biosurfactants, compounds produced by microorganisms, can potentially control biofilm formation as eco-friendly antimicrobial agents and be applied to plastic food packaging to prevent biofilm formation and food spoilage. This study aimed to investigate …
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