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Showing 1 to 20 of 56 for “"OPA"”.

  1. Development of a rapid response riverine oil-particle-aggregate (OPA) formation, transport, and fate model

    Jones, LoriUniversity of Illinois at Urbana-Champaign2018

    … to be done regarding oil particle aggregate (OPA) formation and transport in riverine environments. While three-dimensional hydrodynamic models can track the transport of OPAs with a high degree of accuracy, in the event of an oil spill, rapid response is necessary to protect the affected …

    uiuc Repository record

  2. Development of a fluvial oil-particle aggregate (OPA) drift simulator to evaluate the fate and transport of contaminated sediment in rivers

    Berens, John MatthewUniversity of Illinois at Urbana-Champaign2020

    … fate and transport of oil-particle aggregates (OPA) is important for alleviating much of the long-term effects of riverine spills. A model for this purpose is developed by incorporating OPA formation algorithms from suspended sediments to an existing model that has the capability of transporting …

    uiuc Repository record

  3. Odd-paired: a zinc finger pair-rule protein required for the timely activation of engrailed and wingless in Drosophila embryos

    Benedyk, Mark

    … analysis of the pair-rule gene odd-paired (opa). Genetically, opa is essential for the appropriate level and timing of en and wg expression in all parasegments, but opa activity alone does not determine the restricted spatial domains of these genes. I summarize some of the pair-rule …

    rockefeller Repository record

  4. Development of Simulation Platform for Oropharyngeal Airway Placement and Design Evaluation of the Bardo Airway

    Lee, Lewis On Hang2012

    … use of traditional Oropharyngeal Airway (OPA) as a bite-block, and the subsequential procedure of force exertion of the device by physician has caused many cases of patient’s teeth damage and monetary loss, as the patient’s incisors were damaged while clenching on the OPA during an adverse …

    calpoly Repository record

  5. Evaluation of Ocular Pulse Amplitude-related Parameters measured by Dynamic Contour Tonometry and Ocular Blood Flow Analyzer

    서, 의종2016

    … (ORF) derived from ocular pulse amplitude (OPA) measurements with regard to the severity of glaucoma. This study was conducted in 31 eyes of 31 normal and 38 eyes of 38 normal tension glaucoma (NTG) patients with cross-sectional and retrospective design. OPA was measured using dynamic …

    ajou Repository record

  6. Spatially-Adaptive LiDAR and Underwater Communications Using Integrated Optical Phased Arrays

    DeSantis, Daniel MarkusMassachusetts Institute of Technology2024

    … integrated optical-phased-array-based (OPA-based) technologies, such as solid-state LiDAR and free-space optical communications (FSOC) systems, show promise to revolutionize the way we sense and communicate. This thesis enables new integrated-OPA-based solid-state beam-steering …

    mit Repository record

  7. One-Dimensional MEMS Optical Phased Array Systems Based on Surface Micro-Machined Silicon Mirrors for Scanning LiDAR Applications

    Mohammad, Tarek2021

    Optical phased array (OPA) systems are an emerging technology for lightweight and miniature LiDAR scanners due to their compact size and construction that eliminate the need for robust physical moving parts, leading to a fast response, high reliability, and low power requirements. MEMS based OPA …

    toronto-retro Repository record

  8. Target detection through quantum illumination

    Mouradian, Sara L. (Sara Lambert)Massachusetts Institute of Technology2012

    … recombined in an optical parametric amplifier (OPA) which captures the phase correlation between the two beams. It is found that only 10% of the total signal and idler photons interact at the OPA due to the multi-mode nature of the SPDC emission which does not match the pump spatial mode and …

    mit Repository record

  9. Risk factors for work-related asthma in health workers with exposure to diverse cleaning agents in two African health care settings

    Mwanga, Hussein HassanDepartment of Public Health and Family Medicine2019

    … sampling for aldehydes (orthophthalaldehyde-OPA, glutaraldehyde and formaldehyde) and urine biomonitoring for chlorhexidine. Environmental sampling for aldehydes was conducted more extensively in the South African hospital (SAH). A pilot sampling in the Tanzanian hospital (TAH) revealed very …

    cape-town Repository record

  10. Breaking the Cycle: the Rise and Fall of Conversion Cycle Limited Three-Wave Mixing

    Flemens, Noah RoweCornell University2022

    … characterizes optical parametric amplification (OPA) places a fundamental limitation on efficiency for Gaussian-shaped beam and pulse profiles typical of real laser sources. This is because the intensity dependent conversion period of OPA results in asynchronous conversion across the …

    cornell Repository record

  11. Unconventional Optical Phased Array Design for Next-Generation Wireless Systems

    Yang, XueqingUniversità degli studi di Trento2025

    … of thinned optical phased arrays (OPAs), aiming to achieve high-quality far-field beamforming and near-field focusing through a multi-objective (MO) optimization framework. The method addresses the challenge of selecting which antenna elements should be retained or removed from a …

    trento Repository record

  12. Kelių optinių ciklų trukmės impulsų parametrinis stiprinimas infraraudonojoje srityje /

    Ališauskas, Skirmantas,Institutional Repository of Vilnius University2010

    … on type I BBO crystal is presented. The 2nd OPA stage was pumped by two or three pump beams derived from independent Nd:YAG laser amplifiers. The efficiency of interaction was shown to be comparable to that of single-beam pumped OPA and diminishes only slightly due to cascaded parametric …

    vilnius Repository record

  13. Advancing Understanding of Toddler and Preschooler Sport Participation: A Research Area in its Infancy

    Harlow, Meghan2020

    … (<6) sport and organized physical activity (OPA) participation. This research involved a scoping review, followed by a qualitative case-study, which drew upon multiple data collection methods (semi-structured interviews, observation) from multiple perspectives (toddlers, preschoolers, …

    york Repository record

  14. Optical-parametric-amplification applications to complex images

    Vaughan, Peter MatthiasGeorgia Institute of Technology2011

    … processes of Optical Parametric Amplification (OPA) applicability to imaging of complex objects. We have done this where the Fourier transform plane is used during the interaction. We have amplified and wavelength converted a complex image. We observe a gain of ~100, and, although our images …

    gatech Repository record

  15. An examination of the inadequacy of the wording of the damage claim provisions of the Oil Pollution Act of 1990, resulting in interpretative legal difficulties as revealed by claims stemming from the Deepwater Horizon Oil Spill

    Bradley, Martha MagdalenaShipping Law Unit2014

    The United States Oil Pollution Act 1990 (OPA), contains a provision, s1002(b) (2), that sets out six categories or kinds of damage that may be recovered from a ‘responsible party’ liable for losses resulting from damage caused by the discharge of oil in United States (US) waters. The provision was …

    cape-town Repository record

  16. Development of the recess mounting with monolithic metallization optoelectronic integrated circuit technology for optical clock distribution applications

    Atmaca, Eralp, 1976-Massachusetts Institute of Technology2007

    … Pillar Bonding (APB) and OptoPill Assembly (OPA). APB integrates lattice mismatched materials using aligned, selective area wafer bonding at reduced temperature (under 3500C), which protects the electronic chips from the adverse effects of high temperatures, and reduces the thermal expansion …

    mit Repository record

  17. Influence of Overall Habitual Physical Activity on the Age-Related Change in Muscle Mass in 60 to 85 Year-Olds

    Christou, Demetra DemetriouUniversity of Illinois at Urbana-Champaign2015

    … activity (OHPA), including occupational (OPA), household (HPA) and leisure-time activity (LTA), on the age-related change in muscle mass. A second objective was to examine the relationship between leg muscle mass and concentric/eccentric peak force production (CEPFP) of the quadriceps …

    uiuc Repository record

  18. Towards Large-Scale Integrated Electronic-Photonic Systems

    Idjadi, Mohamad Hossein2020

    … the concept of integrated optical phased arrays (OPAs). In this part, a new OPA architecture is proposed to address the challenges in the state-of-the-art. The new OPA is based on vertical phase shifters acting as nanophotonic waveguides as well. To realize the OPA with vertical phase shifters, …

    penn Repository record

  19. Biology of the envelope glycoproteins of sheep betaretroviruses

    Varela, MarianaUniversity of Glasgow2008

    … agent of ovine pulmonary adenocarcinoma (OPA), a naturally occurring lung cancer of sheep. The JSRV Env glycoprotein is a dominant oncoprotein and its expression is sufficient to induce cell transformation in vitro and in vivo. Thus, OPA is a unique large animal model for the study of lung …

    glasgow Repository record

  20. Konstruktion und Charakterisierung von Lebendvakzine-Kandidaten auf der Basis von siaD-Deletionsmutanten von Neisseria meningitidis Serogruppe B

    Leimbach, ThomasUniversität Würzburg

    … bei beiden siaD-Mutanten unterschiedliche Opa-Expression begründet, da das Opa-Protein als Protein der äußeren Bakterienmembran Oberflächenproteine von humanen Epithel- und Endothelzellen bindet und so zur Adhärenz an die Zielzellen führt (Virji et al., 1993, 1995). Weiterhin sollte in der …

    wurz-thes Repository record

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