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Showing 1 to 20 of 124 for “"OPAL"”.
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Lithology constraints from seismic waveforms : application to opal-A to opal-CT transition
… dataset with a strong diagenetic transition (opal-A to opal-CT transition). Given some information from cutting samples of well, we use a percolation-based model to construct the elastic profile of lithological transitions. Our goal is to match parametric representation for the diagenetic …
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Biogenetic Opal in Illinois Soils
Made available in DSpace on 2014-12-04T20:17:13Z (GMT). No. of bitstreams: 1 6206169.pdf: 3416886 bytes, checksum: c0c7577f7fd6f41c802dd82489e4078f (MD5) Previous issue date: 1962
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The applications for 3d inverse opal microstructures
… applications, and in particular 3-D inverse opal micro structures made using spherical colloidal nanoparticles as building blocks. Because the interactions between colloidal particles are well understood and they are easy to synthesize, they have been widely used to grow these 3-D periodic …
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Untersuchung von ZZ Endzustaenden mit dem OPAL-Detektor
… of ZZ -> qqll events has been studied with the OPAL <br>detector at LEP. The analysis is based on 440 pb^-1 of data <br>recorded at six different centre-of-mass energies between 183 GeV and <br>202 GeV in the years 1997 to 1999. For each possible final state <br>(l = e, mu, tau) a selection has …
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Wisdom of the machines : federated learning using OPAL
… to work correctly. Moreover, Open algorithms (OPAL) is a useful platform that enables institutions and individuals to share sensitive data, and increases the privacy of the data. In addition, federated learning is a new way to build and generate machine learning models by aggregating their …
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New inverse opal hydrogels as platform for detecting macromolecules
… responsive hydrogels in formof an inverse opal. The stimuli-sensitive inverse opal hydrogels (IOHs) were prepared using a sacrificial opal template of monodispersed silica particles. First, monodisperse silica particles were assembled with a hexagonally packed structure via vertical …
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Four-Fermion production at LEP using the OPAL detector
In 1997 LEP reached energies at which the production of heavy <br>gauge pairs of bosons was possible. Over 650 pb$^{-1}$ of <br>data have been analysed at centre-of-mass energies between 183 and 209 GeV. <br>Four-fermion final states stemming from decays of the Z$gamma^*$ into <br>$ <br>m q …
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The dissolution rates of amorphous silica and opal-CT
… (soda-lime glass and fused quartz) and a natural opal (opal-CT) in distilled and deionized water and two concentrations of NaCI solution from 25°C to 75°C were measured by molybdate blue method and determined by initial rate method. The specific surface area of the samples were determined by N2 …
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Opal: In Vivo Based Preservation Framework for Locating Lost Web Pages
<p>We present Opal, a framework for interactively locating missing web pages (http status code 404). Opal is an example of "in vivo" preservation: harnessing the collective behavior of web archives, commercial search engines, and research projects for the purpose of preservation. Opal servers learn …
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Suche nach der Produktion einzelner Top-Quarks mit dem OPAL-Detektor
… neutrale Ströme mit den Daten des OPAL-Detektors am e+e- -Speicherring LEP gesucht. Hierzu wird im hadronischen Zerfallskanal des W-Bosons nach dem Prozess e+e- -> tc(u) -> bWc(u) gesucht. Die Selektion der Ereignisse beruht auf der kinematischen Rekonstruktion und dem Auffinden von …
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Analysis of Excited B Mesons with the OPAL Detector at LEP
… million hadronic <br>Z^0 decays recorded by the OPAL detector on and near to the Z^0 resonance, a sample of more than 570,000 inclusively reconstructed <br>B mesons is selected making use of improved tagging and reconstruction methods. B* mesons are reconstructed using the decay <br>B* -> B …
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Functional Microperiodic Polyacrylamide Gels Fabricated by Opal Inversion and Direct-Write Processes
Functional three-dimensional microperiodic polyacrylamide hydrogel structures were created and characterized. Submicron to 50 micron periodicities were explored across the structures, the lower end for optical and filtration potential and the larger for cell growth scaffolds. Two synthesis methods …
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Rational Fabrication of High-Performance and Scalable Opal Crystals for Thermo-Fluidic Applications
Inverse opals have continuously attracted interest as a scalable, ordered porous material capable of enhancing energy, fluid, mass, or ion transport in a wide variety of applications. In particular, in heat transfer applications they have been used as porous coatings for condensers and boilers for …
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Untersuchung der Produktion charmhaltiger Mesonen in der Photon-Photon-Streuung mit dem OPAL-Experiment
… Arbeit basiert <br>auf den Daten, die mit dem OPAL-Detektor am <br>Elektron-Positron-Speicherring LEP am CERN in Genf in den Jahren <br>von 1989 bis 1998 aufgenommen worden sind. <br>Anhand des Charmonium-Zustandes Chi(c2) wird die Resonanzproduktion <br>von Charm-Quarks untersucht und die …
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Bestimmung des totalen hadronischen Wirkungsquerschnitts in der Photon-Photon-Streuung mit dem OPAL-Detektor
… LEP am CERN wurde mit dem OPAL-Detektor <br>für den Prozeß (e+e- --> e+e-Hadronen) der differentielle Wirkungsquerschnitt <br>dWQee/dWgg gemessen. <br>Hierbei ist Wgg die invariante Masse des Photon-Photon-Systems. <br>Dies geschieht durch Entfalten der unvollständig …
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Effect of Ionic Liquid Electrolytes in DSSCs with Titanium Dioxide (TiO2) Inverse Opal Structures
… we present a study of DSSCs with TiO2 inverse opal electrodes of controlled pore sizes (0.1-1 m) and ionic liquid derivatives of 1-alkyl-3-methylimidazolium tetrafluoroborate (alkyl: ethyl, butyl, and decyl) with viscosities ranging from 25.2 to 721 cP. The stability and functionality of the …
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Inverse opal hydrogel scaffolds as lymphoid microenvironments for the study of immune cell migration and immunotherapy
Immunotherapies harness the inherent potential of the body to destroy foreign or infected cells, by stimulating new or enhancing existing immune responses. One way to boost insufficient native immunity might be to engineer lymphoid tissue at disease sites (e.g., tumors). Such neotissues could be …
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Parallel FDTD Electromagnetic Simulation of Dispersive Plasmonic Nanostructures and Opal Photonic Crystals in the Optical Frequency Range
… parameters have been deduced from this study. Opal photonic crystals with different filling factors have been simulated in order to tune the optical transmittance band-gap and find a theoretical explanation to the experimental evidences.
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Bestimmung der Masse und Breite des W-Bosons im semileptonischen Zerfallskanal mit dem OPAL Detektor bei LEP
Diese Arbeit ist eine Weiterentwicklung der beim OPAL-Experiment verwendeten Faltungsmethode zur Bestimmung der Masse des geladenen Eichbosons der schwachen Wechselwirkung. Die Methode wurde ausgeweitet auf eine gleichzeitige Bestimmung der Masse Mw und der Zerfallsbreite Gw des W-Boson genannten …
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Untersuchung der Produktion prompter Photonen und neutraler Pionen in der Photon-Photon-Streuung mit dem OPAL-Experiment
… bei LEP untersucht. Es werden dazu die Daten des OPAL-Experimentes mit Schwerpunktsenergien von 183 GeV bis 209 GeV verwendet. <br>Der totale inklusive Produktionswirkungsquerschnitt für isolierte prompte Photonen wird zu (0.32 +- 0.04 (stat) +- 0.04 (sys)) pb im kinematischen Bereich für …
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