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  1. Acoustic Emission Monitoring of North East Trunnion Shaft on Oregon DOT Bridge 1377A: I-5 over the Columbia River, Portland, Oregon

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    Description: This report shows the results of acoustic emission (AE) monitoring, and provides additional information on the nature of the ultrasonic indications in the north east trunnion shaft.
    Keyword: Acoustic emission testing
    Creator: David W. Prine and Jerome E. Oleksy
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 1996-05
    Rights: All rights reserved
    Resource Type: Report
  2. Remote Global Monitoring of the Michigan Street Bridge, Sturgeon Bay, Wisconsin

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    Description: A remote global monitoring system is being operated on a 65 year old lift bridge in Sturgeon Bay Wisconsin. The system uses both strain gages and clinometers to continuously monitor the "health" of the fracture critical components of the bridge. Ruggedized miniaturized data loggers are locally mounted on the structure...
    Keyword: Acoustic emission testing
    Creator: Fish, Philip and Prine, David
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 1997
    Rights: All rights reserved
    Resource Type: Report
  3. Localization of Noise Sources in Large Structures Using AE

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    Description: This paper describes application of AE monitoring techniques to localize the sources of large noises in civil structures. These noises occur during operation of moveable portions of a structure in such things as lift bridges and moveable sports stadium roofs. The use of straightforward AE monitoring techniques can provide clear...
    Keyword: Acoustic emission testing
    Creator: Prine, David
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 2004
    Rights: All rights reserved
    Resource Type: Research Paper
  4. Noise Localization via Acoustic Emission Monitoring on a Rolling Leaf Bascule Bridge

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    Description: Acoustic emission (AE) testing was used to identify the source of audible “bangs” generated during opening and closing of a large, double-leaf rolling-lift bascule bridge. The data were analyzed using a combination of well-established AE techniques, including first hit analysis (FHA), planar location analysis, and linear location analysis. The FHA...
    Keyword: Acoustic emission testing
    Creator: Matthew P. Kotowsky , David E. Kosnik, David W. Prine, and David Corr
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 2009-06-10
    Rights: All rights reserved
    Resource Type: Report
  5. White Paper: Tiltmeter-Based Bridge Scour Monitoring

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    Description: Scour is by far the primary cause of bridge failures in the United States. Scour and other hydraulic effects are particularly threatening because the deterioration is often invisible, hidden beneath turbid water. Many scour monitoring methods attempt to measure the development of scour pockets themselves. However, this is difficult due...
    Keyword: Tiltmeter and Scours at bridges
    Creator: Kosnik, David and Ng, Steve
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 2010-02-17
    Rights: All rights reserved
    Resource Type: Research Paper
  6. Acoustic Emission Monitoring for Assessment of Steel Bridge Details

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    Description: Acoustic emission (AE) testing was deployed on details of two large steel Interstate Highway bridges: one cantilever through-truss and one trapezoidal box girder bridge. Quantitative measurements of activity levels at known and suspected crack locations were made by monitoring AE under normal service loads (e.g., live traffic and wind). AE...
    Keyword: Acoustic emission testing
    Creator: Hopwood, T., Corr, D. J., and Kosnik, D. E.
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/21/2017
    Date Modified: 08/14/2017
    Date Created: 2010
    Rights: All rights reserved
    Resource Type: Research Paper
  7. Genetic diversity of Bangladeshi jackfruit (Artocarpus heterophyllus, Moraceae)

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    Description: The Moraceae family includes several species producing edible fruits, including mulberry, fig, breadnut, and osage-orange.
    Keyword: plant biology
    Subject: plant biology
    Creator: Witherup, Colby
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/14/2017
    Date Modified: 06/14/2017
    Date Created: 2013-05-13
    Rights: All rights reserved
    Resource Type: Masters Thesis
    Identifier: http://hdl.handle.net/2166.DL/repo-pbmt-witherup
  8. Diversity and origins of an underutilized tropical fruit tree, cempedak (Artocarpus integer, Moraceae), and its wild relative bangkong (Artocarpus integer var. silvestris)

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    Description: The underutilized tropical fruit tree, “cempedak” (Artocarpus integer (Thunb.) Merr. , Moraceae), is a major crop in Malaysia but the distribution of genetic diversity in the crop and its putative wild progenitor, “bangkong” (Artocarpus integer var. silvestris Corner), have not been studied. To investigate the diversity and origins of cempedak,...
    Keyword: plant biology
    Subject: plant biology
    Creator: Wang Mei Hua, Maria
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/14/2017
    Date Modified: 06/14/2017
    Date Created: 2014-11-20
    Rights: All rights reserved
    Resource Type: Masters Thesis
    Identifier: http://hdl.handle.net/2166.DL/repo-pbmt-m_wangmeihua
  9. Seasonal variation of key soil characteristics of a tallgrass prairie along a restoration gradient

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    Description: Current ecological restoration efforts seek to restore a target community, maximize biodiversity or provide habitat for rare species. In practice, restoration ecology is often initiated and sustained without knowledge or reverence to the belowground ecosystem processes, though these processes often subtend the long-term sustainability of aboveground and belowground ecological communities.
    Keyword: plant biology
    Subject: plant biology
    Creator: Umek, Lauren G.
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/14/2017
    Date Modified: 06/14/2017
    Date Created: 2007-05-15
    Rights: All rights reserved
    Resource Type: Masters Thesis
    Identifier: http://hdl.handle.net/2166.DL/repo-pbmt-umek
  10. Environmental factors affecting woodland legume restoration

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    Description: Past efforts to reintroduce the native legume species Desmodium glutinosum and Lespedeza violacea into restored woodlands have not produced self-sustaining populations. Proposed factors preventing reintroduction include herbivory, persistent environmental effects of invasive shrubs, poor performance of commercial Rhizobium inoculants, and competitive displacement associated with elevated nitrogen availability. To address these...
    Keyword: plant biology
    Subject: plant biology
    Creator: Tsang, Byron Yan
    Owner: Nurganym Agzamova
    Publisher: Northwestern University Libraries
    Language: English
    Date Uploaded: 06/14/2017
    Date Modified: 06/14/2017
    Date Created: 2012-11-27
    Rights: All rights reserved
    Resource Type: Masters Thesis
    Identifier: http://hdl.handle.net/2166.DL/repo-pbmt-tsang