33 research outputs found
Evaluating the Impact of Algal Biomass Augmentation on Primary Solids Fermentation and Associated Impacts of Fermenter Liquor on a Novel Post-Anoxic Enhanced Biological Phosphorus Removal Process
No full textNitrogen (N) and phosphorus (P) must be removed from wastewater to sustain the water quality of receiving bodies. In this regard, algae can be utilized to achieve tertiary wastewater treatment, removing residual N and P; moreover, algae production creates opportunities to enhance overall water resource recovery facility productivity. Research evaluated an integrated fermenter-biological nutrient removal (BNR) process, integrating algae cultured on secondary effluent. It was hypothesized that algae recycled to the fermenter would increase volatile fatty acid (VFA) production. VFAs are critical for BNR stability; however, concurrent addition of N and P (from the algal biomass) could stress the BNR system. Surprisingly, addition of algae decreased VFA production and consumed ammonia, seemingly due to heterotrophic algae growth in the fermenter. Conversely, the BNR system realized no effect from the algal biomass recycling; P removal was consistent with and without algae, while less efficient nitrification but more efficient denitrification was realized.masters, M.S., Civil Engineering -- University of Idaho - College of Graduate Studies, 2017-0
Hermeticity of electronic packages /
No full text"This is a book about the integrity of sealed packages to resist foreign gases and liquids penetrating the seal or an opening (crack) in the package, especially critical to the reliability and longevity of electronics. The author explains how to predict the reliability and the longevity of the packages based on leak rate measurements and the assumptions of impurities. Non-specialists in particular will benefit from the author's long involvement in the technology. Hermeticity is a subject that demands practical experience, and solving one problem does not necessarily give one the background to solve another. Thus, the book provides a ready reference to help deal with day to day issues as they arise. The book gathers in a single volume a great many issues previously available only in journals̮or only in the experience of working engineers. How to define the "goodness" of a seal? How is that seal measured? How does the integrity of the seal affect circuit reliability? What is the significance of the measured integrity of the seal? What is the relationship of Residual Gas Analysis and the seal integrity? The handbook answers these questions and more, providing an analysis of nearly 100 problems representative of the wide variety of challenges that actually occur in industry today."--Provided by publisher.Includes bibliographical references and index.Gas Kinetics -- Viscous and Molecular Conductance of Gases -- The Flow of Gases -- The Flow of Gases into Sealed Packages -- Water in Sealed Packages -- Understanding Helium Fine Leak Testing in Accordance with Method 1014, MIL-STD-883 -- Fine Leak Measurements Using a Helium Leak Detector -- Gross Leaks -- The Permeation of Gases Through Solids -- Residual Gas Analysis (RGA) -- Appendix -- Acknowledgment."This is a book about the integrity of sealed packages to resist foreign gases and liquids penetrating the seal or an opening (crack) in the package, especially critical to the reliability and longevity of electronics. The author explains how to predict the reliability and the longevity of the packages based on leak rate measurements and the assumptions of impurities. Non-specialists in particular will benefit from the author's long involvement in the technology. Hermeticity is a subject that demands practical experience, and solving one problem does not necessarily give one the background to solve another. Thus, the book provides a ready reference to help deal with day to day issues as they arise. The book gathers in a single volume a great many issues previously available only in journals̮or only in the experience of working engineers. How to define the "goodness" of a seal? How is that seal measured? How does the integrity of the seal affect circuit reliability? What is the significance of the measured integrity of the seal? What is the relationship of Residual Gas Analysis and the seal integrity? The handbook answers these questions and more, providing an analysis of nearly 100 problems representative of the wide variety of challenges that actually occur in industry today."--Provided by publisher.Title from title screen (viewed on Nov. 2, 2011).Elsevie
Limits on Diffuse Fluxes of High Energy Extraterrestrial Neutrinos with the AMANDA – B10 Detector
No full textA report on the limits, which could be placed on diffuse fluxes of high energy extraterrestrial neutrinos, was presented. The incorporation of neutrino oscillations was necessary for interpreting the limits in terms of the flux from a cosmological distributions of sources. The energetic accelerated environments were presented as the sources of high energy extraterrestrial neutrinos.0SCOPUS: ar.jSCOPUS: ar.jinfo:eu-repo/semantics/publishe
Underwater Laboratories for Astroparticle Physics and Deep Sea Science
No full textThe exploration of deep sea environments is presently at the dawn of a new era:
underwater laboratories, permanently installed on the sea floor and offering
power and on-line data transmission links to the shore, will allow to continuously
monitor oceanographical properties. An important boost in this direction has
been provided by the high energy physics scientific community, that aims at the
realization of an underwater detector for cosmic high energy neutrinos.
Neutrinos are considered a very promising probe for high energy astrophysics
and many indications suggest that some of the most energetic sources known in
the universe could also be high energy neutrino sources. The expected neutrino
fluxes indicate that a km3-scale detector must be realised to achieve this
ambitious aim. The quest for the realization of such a detector in the
Mediterranean Sea has already started.JCR Journalope
Calibration and survey of AMANDA with the SPASE detectors
No full textWe report on the analysis of air showers observed in coincidence by the Antarctic Muon and Neutrino detector array (AMANDA-B10) and the South Pole Air Shower Experiment (SPASE-1 and SPASE-2). We discuss the use of coincident events for calibration and survey of the deep AMANDA detector as well as the response of AMANDA to muon bundles. This analysis uses data taken during 1997 when both SPASE-1 and SPASE-2 were in operation to provide a stereo view of AMANDA
The AMANDA Neutrino Detector
No full textThe first stage of the AMANDA High Energy Neutrino Detector at the South Pole, the 302 PMT array AMANDA-B with an expected effective area for TeV neutrinos of ∼ 104 m2, has been taking data since 1997. Progress with calibration, investigation of ice properties, as well as muon and neutrino data analysis are described. The next stage 20-string detector AMANDA-II with ∼800 PMTs will be completed in spring 2000.</p
Search for supernova neutrino bursts with the AMANDA detector
No full textThe core collapse of a massive star in the Milky Way will produce a neutrino burst, intense enough to be detected by existing underground detectors. The AMANDA neutrino telescope located deep in the South Pole ice can detect MeV neutrinos by a collective rate increase in all photo-multipliers on top of dark noise. The main source of light comes from positrons produced in the CC-reaction of anti-electron neutrinos on free protons . This paper describes the first supernova search performed on the full sets of data taken during 1997 and 1998 (215 days of live time) with 302 of the detector's optical modules. No candidate events resulted from this search. The performance of the detector is calculated, yielding a 70% coverage of the Galaxy with one background fake per year with 90% efficiency for the detector configuration under study. An upper limit at the 90% c.l. on the rate of stellar collapses in the Milky Way is derived, yielding 4.3 events per year. A trigger algorithm is presented and its performance estimated. Possible improvements of the detector hardware are reviewed
Physics results from the AMANDA neutrino detector
No full textIn the winter season of 2000, the AMANDA (Antarctic Muon And NeutrinoDetector Array) detector was completed to its nal state. We report on major physicsresults obtained from the AMANDA-B10 detector, as well as initial results of the fullAMANDA-II detector.</p
The AMANDA neutrino telescope
No full textWith an effective telescope area of order 104 m2 for TeV neutrinos, a threshold near ∼50 GeV and a pointing accuracy of 2.5 degrees per muon track, the AMANDA detector represents the first of a new generation of high energy neutrino telescopes, reaching a scale envisaged over 25 years ago. We describe early results on the calibration of natural deep ice as a particle detector as well as on AMANDA's performance as a neutrino telescope.</p
The AMANDA neutrino detector : Status report
No full textThe first stage of the AMANDA High Energy Neutrino Detector at the South Pole, the 302 PMT array AMANDA-B10, is taking data since 1997. We describe results on atmospheric neutrinos, limits on indirect WIMP detection, seasonal muon flux variation, relativistic monopole flux limits, a search for gravitational collapse neutrinos, and a depth scan of the optical ice properties. The next stage 19-string detector AMANDA-II with ∼650 PMTs will be completed in spring 2000.</p
