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Filtering by: Alternative title ssim Technical note no. F-4 Remove constraint Alternative title ssim: Technical note no. F-4 Academic Affiliation Civil, Construction, and Environmental Engineering Remove constraint Academic Affiliation: Civil, Construction, and Environmental Engineering Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • Aqueous-organic partition coefficients for Rn-222 and their application to Radon analysis by liquid scintillation methods

    Creator:
    Cantaloub, Michael G.
    Abstract:
    A method is described for determining the partition coefficient, K, for radon gas distributed between an aqueous phase and an organic solvent. The method uses sequential extractions of radon into equal volume aliquots of organic solvent. The radon-laden organic liquid is then counted on a liquid scintillation analyzer with alpha-beta...
    Resource Type:
    Masters Thesis
    Full Text:
    , would be F= (4)w 00 + W W Ky0 + w where V and V0 are the volumes (mL) of the aqueous and organic phases

  • Numerical modeling of full-coupled fluid-structure interaction

    Creator:
    Yuk, Dongjun
    Abstract:
    A numerical model for the simulation of fully-coupled fluid-structure interaction is developed in this study. In modeling the fluid, the Reynolds Averaged Navier-Stokes equations are solved for an incompressible viscous fluid field and a k-ε model is employed for turbulence computations. Hydrodynamic forces obtained by the integration of the fluid...
    Resource Type:
    Dissertation
    Full Text:
    . Robert L. Higdon, Dr. Jack F. Higginbotham, Dr. Michael H. Scott for their time and effort spent

  • Metabolic uncoupling of Shewanella oneidensis MR-1, under the presence of excess substrate and 3,3’,4’,5 tetrachlorosalicylanilide

    Creator:
    Saini, Gaurav
    Abstract:
    Dissociation between catabolism and anabolism, generically termed “metabolic uncoupling”, has been studied for aerobic cultures of Shewanella oneidensis MR-1. Under conditions promoting metabolic uncoupling, the cell yield diminishes while the substrate utilization rate remains largely unchanged. The effects of excess substrate conditions and TCS addition on the metabolism of pyruvate...
    Resource Type:
    Masters Thesis
    Full Text:
    excess substrate and 3,3’,4’,5 Tetrachlorosalicylanilide. Abstract Approved: Brian D

  • The seismic geotechnical modeling, performance, and analysis of pile-supported wharves

    Creator:
    McCullough, Nason J.
    Abstract:
    This dissertation presents the results of a research effort conducted to better understand the seismic performance and analysis of pile-supported wharves. Given the limited number of well-documented field case histories, the seismic performance of pile-supported wharves has been poorly quantified, and the analysis methods commonly employed in engineering practice have...
    Resource Type:
    Dissertation
    Full Text:
    ............................................................................................... 110 CHAPTER 4 MANUSCRIPT NO.3: THE SEISMIC ANALYSIS OF PILE- SUPPORTED STRUCTURES ON SLOPES

  • Scale effects on reinforced concrete beams strengthened for shear with discrete externally bonded carbon fiber-reinforced polymer U-wraps

    Creator:
    Dawson, Matthew Ryan
    Abstract:
    Current ACI design provisions for shear in reinforced concrete (RC) beams strengthened with externally bonded carbon fiber-reinforced polymer (CFRP) U-wraps may not adequately account for the effect of scale. This paper describes tests of 6 geometrically scaled beams to identify possible scale effects of such beams. Results indicated that effective...
    Resource Type:
    Masters Thesis
    Full Text:
    cfk ⎛ ⎞= ⎜ ⎟ ⎝ ⎠ (10-8) US [4] 5 2 f e f d L k d ⎛ ⎞− = ⎜ ⎟⎜ ⎟ ⎝ ⎠ (10-9

  • Establishing a through-boring pattern and method of test for utility poles

    Creator:
    Elkins, Lori A.
    Abstract:
    The goal of this study was to optimize a through-boring pattern that will provide adequate preservative penetration while minimizing the reduction in overall pole bending strength. Hole spacing was developed using longitudinal and transverse chemical penetration data from previous studies. Finite element analysis was used as a preliminary assessment tool...
    Resource Type:
    Masters Thesis
    Full Text:
    poles in a zone 36 in. to +24 in. from the groundline. Through-bored poles were tested in a modified 4

  • Wood materials and shearwalls of older light-frame residential structures

    Creator:
    Carroll, Cameron T.
    Abstract:
    Light-frame construction practices and materials have changed greatly over the past 100 years. Contemporary research has focused on modern construction; thus, we know a great deal about the behavior of modern lightframe buildings under lateral forces. However, there are many light-frame buildings that were built prior to the introduction of...
    Resource Type:
    Masters Thesis
    Full Text:
    used (model 2420BLX – 1000; serial no. 136131A; capacity 1000 lb)……………………………… 186 D.4 The

  • Hybridized framing to modify load paths and enhance wood shearwall performance

    Creator:
    Bultena, Sarah M.
    Abstract:
    Heavy timber framing relies primarily on bracing to withstand lateral loads due to earthquakes and wind events. Bracing configurations in heavy timber framed buildings vary widely and include cross bracing, knee bracing, and other geometries. Many heavy timber frames constructed during colonial American times are still standing, exceeding the expected...
    Resource Type:
    Masters Thesis
    Full Text:
    under lateral loading. A 4 by 8-ft. shearwall was designed consisting of an internal cross brace

  • Uranium and technetium bio-immobilization in intermediate-scale permeable reactive scale barriers

    Creator:
    Sapp, Mandy M.
    Abstract:
    Groundwater at Oak Ridge National Laboratory's Field Research Center (FRC) is contaminated with U(VI) and Tc(VII), has pH values as low as 3.3, and nitrate concentrations as high as 120 mM. The objective of this research was to determine if in-situ bio-immobilization is a viable treatment alternative for this water....
    Resource Type:
    Masters Thesis
    Full Text:
    no uranium reduction was detected. Results of the low nitrate (3 mM) column study indicate that once

  • The effect of hold-down misplacement on the strength and stiffness of wood shear walls

    Creator:
    Lebeda, Dana J.
    Abstract:
    The objective of this study was to determine the effect of misplaced hold-downs on the static and cyclic behavior of wood shear walls. Three shear wall configurations were considered in this study. The first configuration (control) had hold-downs at the ends of the wall (wall type 1), the second configuration...
    Resource Type:
    Masters Thesis
    Full Text:
    89 mm (2 x 4 in. nominal) No. 2 kiln dried Douglas-fir studs spaced at 406 mm (16 in.) o.c