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2012 SRNL-EM VANE RHEOLOGY RESULTS
The vane method has been shown to be an effective tool in measuring the yield stress of both settled and mixed slurries in laboratory bench scale conditions in supporting assessments of both actual and simulant waste slurries. The vane has also been used to characterize dry powders and granular solids, the effect of non-cohesive solids with interstitial fluids and used as a guide to determine if slip is present in the geometries typically used to perform rheological flow curve measurements. The vane has been extensively characterized for measuring the shear strength in soils in both field and laboratory studies. The objectives for this task are: Fabricate vane instrument; Bench top testing to further characterize the effect of cohesive, non-cohesive, and blends of cohesive/non-cohesive simple simulants; Data from measurement of homogenized and settled bed of Kaolin sludge and assessment of the technology. In this document, the assessment using bench scale measurements of non-cohesive materials (beads) and cohesive materials (kaolin) is discussed. The non-cohesive materials include various size beads and the vane was assessed for depth and deaeration (or packing) via tapping measurements. For the cohesive (or non-Newtonian) materials, flow curves and yield stress measurements are performed using the vane and this …
Date:
August 31, 2012
Creator:
Hansen, E.; Marzolf, A. & Hera, K.
Object Type:
Report
System:
The UNT Digital Library
Advanced Accelerator Physics Research at UCLA
Closeout report on Advanced Accelerator Physics program at UCLA Physics & Astronomy
Date:
August 31, 2012
Creator:
Cline, David B
Object Type:
Report
System:
The UNT Digital Library
Advanced Gearless Drivetrain - Phase I Technical Report
Boulder Wind Power (ÃÂâÃÂÃÂÃÂÃÂBWPÃÂâÃÂÃÂÃÂÃÂ) collaborated with the National Renewable Energy Laboratory (NREL) in Golden, Colorado, to demonstrate the economics of scaling an advanced gearless drivetrain technology to 6MW (and larger) turbine applications. The project goal was to show that this advanced drivetrain technology enables a cost of energy of less than $0.10/kWH in offshore applications. This drivetrain technology achieves this Cost of Energy (ÃÂâÃÂÃÂÃÂÃÂCOEÃÂâÃÂÃÂÃÂÃÂ) advantage via a 70% greater torque density versus current state-of-the-art drivetrain technologies. In addition, a new dynamically compliant design strategy is required to optimize turbine system-level COE. The BWP generator is uniquely suited for this new design strategy. This project developed a concept design for a 6MW drivetrain and culminated in a plan for a system-level test of this technology at 3MW scale. The project further demonstrated the advantage of the BWP drivetrain with increasing power ratings, with conceptual designs through 10 MW.
Date:
August 31, 2012
Creator:
Butterfield, Sandy; Smith, Jim; Petch, Derek; Sullivan, Brian; Smith, Peter & Pierce, Kirk
Object Type:
Report
System:
The UNT Digital Library
ADVANCED METHODS FOR THE COMPUTATION OF PARTICLE BEAM TRANSPORT AND THE COMPUTATION OF ELECTROMAGNETIC FIELDS AND MULTIPARTICLE PHENOMENA
Since 1980, under the grant DEFG02-96ER40949, the Department of Energy has supported the educational and research work of the University of Maryland Dynamical Systems and Accelerator Theory (DSAT) Group. The primary focus of this educational/research group has been on the computation and analysis of charged-particle beam transport using Lie algebraic methods, and on advanced methods for the computation of electromagnetic fields and multiparticle phenomena. This Final Report summarizes the accomplishments of the DSAT Group from its inception in 1980 through its end in 2011.
Date:
August 31, 2012
Creator:
Dragt, Alex J.
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 113, No. 66, Ed. 1 Friday, August 31, 2012
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 31, 2012
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Analysis of Self-Similar Solutions of Multidimensional Conservation Laws
This project brought large-scale, advanced methods for numerical solution of PDE to bear on the two-dimensional Riemann problem, and obtained numerical solution of problem. This numerical solution allowed us to describe key features of the solution. Analysis was combined with numerical solution to explain these numerical results. High-resolution, large-scale numerical computations show for the #12;first time that a shock forms strictly in the supersonic region. Numerical solutions appear to show the disappearance of a diffracting shock at a sonic line.
Date:
August 31, 2012
Creator:
Tesdall, Allen M.
Object Type:
Report
System:
The UNT Digital Library
Assessment of lesser prairie-chicken lek density relative to landscape characteristics in Texas
My 2.5-yr Master'Âs project accomplished the objectives of estimating lesser prairie-chicken (LPC) lek density and abundance in the Texas occupied range and modeling anthropogenic and landscape features associated with lek density by flying helicopter lek surveys for 2 field seasons and employing a line-transect distance sampling method. This project was important for several reasons. Firstly, wildlife managers and biologists have traditionally monitored LPC populations with road-based surveys that may result in biased estimates and do not provide access to privately-owned or remote property. From my aerial surveys and distance sampling, I was able to provide accurate density and abundance estimates, as well as new leks and I detected LPCs outside the occupied range. Secondly, recent research has indicated that energy development has the potential to impact LPCs through avoidance of tall structures, increased mortality from raptors perching on transmission lines, disturbance to nesting hens, and habitat loss/fragmentation. Given the potential wind energy development in the Texas Panhandle, spatial models of current anthropogenic and vegetative features (such as transmission lines, roads, and percent native grassland) influencing lek density were needed. This information provided wildlife managers and wind energy developers in Texas with guidelines for how change in landscape features could impact …
Date:
August 31, 2012
Creator:
Timmer, Jennifer; Butler, Matthew; Ballard, Warren; Boal, Clint & Whitlaw, Heather
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 92, No. 174, Ed. 1 Friday, August 31, 2012
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
August 31, 2012
Creator:
Gray, Janie
Object Type:
Newspaper
System:
The Portal to Texas History
Brownwood Bulletin (Brownwood, Tex.), Vol. 112, No. 275, Ed. 1 Friday, August 31, 2012
Weekly newspaper from Brownwood, Texas that includes local, state and national news along with advertising.
Date:
August 31, 2012
Creator:
Deason, Gene
Object Type:
Newspaper
System:
The Portal to Texas History
Cervical SPECT Camera for Parathyroid Imaging
Primary hyperparathyroidism characterized by one or more enlarged parathyroid glands has become one of the most common endocrine diseases in the world affecting about 1 per 1000 in the United States. Standard treatment is highly invasive exploratory neck surgery called ÃÂâÃÂÃÂÃÂÃÂParathyroidectomyÃÂâÃÂÃÂÃÂÃÂ. The surgery has a notable mortality rate because of the close proximity to vital structures. The move to minimally invasive parathyroidectomy is hampered by the lack of high resolution pre-surgical imaging techniques that can accurately localize the parathyroid with respect to surrounding structures. We propose to develop a dedicated ultra-high resolution (~ 1 mm) and high sensitivity (10x conventional camera) cervical scintigraphic imaging device. It will be based on a multiple pinhole-camera SPECT system comprising a novel solid state CZT detector that offers the required performance. The overall system will be configured to fit around the neck and comfortably image a patient.
Date:
August 31, 2012
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
City of Grand Rapids Building Solar Roof Demonstration
Grand Rapids, Michigan is striving to reduce it environmental footprint. The municipal government organization has established environmental sustainability policies with the goal of securing 100% of its energy from renewable sources by 2020. This report describes the process by which the City of Grand Rapids evaluated, selected and installed solar panels on the Water/Environmental Services Building. The solar panels are the first to be placed on a municipal building. Its new power monitoring system provides output data to assess energy efficiency and utilization. It is expected to generate enough clean solar energy to power 25 percent of the building. The benefit to the public includes the economic savings from reduced operational costs for the building; an improved environmentally sustainable area in which to live and work; and increased knowledge about the use of solar energy. It will serve as a model for future energy saving applications.
Date:
August 31, 2012
Creator:
DeClercq, Mark & Martinez, Imelda
Object Type:
Report
System:
The UNT Digital Library
CO{sub 2} Capture from Flue Gas Using Solid Molecular Basket Sorbents
The objective of this project is to develop a new generation of solid, regenerable polymeric molecular basket sorbent (MBS) for more cost-efficient capture and separation of CO{sub 2} from flue gas of coal-fired power plants. The primary goal is to develop a cost-effective MBS sorbent with better thermal stability. To improve the cost-effectiveness of MBS, we have explored commercially available and inexpensive support to replace the more expensive mesoporous molecular sieves like MCM-41 and SBA- 15. In addition, we have developed some advanced sorbent materials with 3D pore structure such as hexagonal mesoporous silica (HMS) to improve the CO{sub 2} working capacity of MBS, which can also reduce the cost for the whole CO{sub 2} capture process. During the project duration, the concern regarding the desorption rate of MBS sorbents has been raised, because lower desorption rate increases the desorption time for complete regeneration of the sorbent which in turn leads to a lower working capacity if the regeneration time is limited. Thus, the improvement in the thermal stability of MBS became a vital task for later part of this project. The improvement in the thermal stability was performed via increasing the polymer density either using higher molecular weight PEI …
Date:
August 31, 2012
Creator:
Fillerup, Eric; Zhang, Zhonghua; Peduzzi, Emanuela; Wang, Dongxiang; Guo, Jiahua; Ma, Xiaoliang et al.
Object Type:
Report
System:
The UNT Digital Library
A Comparison of Image Quality Evaluation Techniques for Transmission X-Ray Microscopy
Beamline 6-2c at Stanford Synchrotron Radiation Lightsource (SSRL) is capable of Transmission X-ray Microscopy (TXM) at 30 nm resolution. Raw images from the microscope must undergo extensive image processing before publication. Since typical data sets normally contain thousands of images, it is necessary to automate the image processing workflow as much as possible, particularly for the aligning and averaging of similar images. Currently we align images using the 'phase correlation' algorithm, which calculates the relative offset of two images by multiplying them in the frequency domain. For images containing high frequency noise, this algorithm will align noise with noise, resulting in a blurry average. To remedy this we multiply the images by a Gaussian function in the frequency domain, so that the algorithm ignores the high frequency noise while properly aligning the features of interest (FOI). The shape of the Gaussian is manually tuned by the user until the resulting average image is sharpest. To automatically optimize this process, it is necessary for the computer to evaluate the quality of the average image by quantifying its sharpness. In our research we explored two image sharpness metrics, the variance method and the frequency threshold method. The variance method uses the variance …
Date:
August 31, 2012
Creator:
Bolgert, Peter J & /SLAC, /Marquette U.
Object Type:
Report
System:
The UNT Digital Library
Copperas Cove Leader-Press (Copperas Cove, Tex.), Vol. 117, No. 95, Ed. 1 Friday, August 31, 2012
Semi-weekly newspaper from Copperas Cove, Texas that includes local, state and national news along with advertising.
Date:
August 31, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Crosby County News (Ralls, Tex.), Vol. 125, No. 34, Ed. 1 Friday, August 31, 2012
Weekly newspaper from Ralls, Texas that includes local, state and national news along with advertising.
Date:
August 31, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 29, No. 16, Ed. 1 Friday, August 31, 2012
Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date:
August 31, 2012
Creator:
Wright, John
Object Type:
Newspaper
System:
The Portal to Texas History
Enhanced Growth Rate and Silane Utilization in Amorphous Silicon and Nanocrystalline-Silicon Solar Cell Deposition via Gas Phase Additives
Air Products set out to investigate the impact of additives on the deposition rate of both ÃÂõCSi and ÃÂñSi-H films. One criterion for additives was that they could be used in conventional PECVD processing, which would require sufficient vapor pressure to deliver material to the process chamber at the required flow rates. The flow rate required would depend on the size of the substrate onto which silicon films were being deposited, potentially ranging from 200 mm diameter wafers to the 5.7 m2 glass substrates used in GEN 8.5 flat-panel display tools. In choosing higher-order silanes, both disilane and trisilane had sufficient vapor pressure to withdraw gas at the required flow rates of up to 120 sccm. This report presents results obtained from testing at Air ProductsâÃÂàelectronic technology laboratories, located in Allentown, PA, which focused on developing processes on a commercial IC reactor using silane and mixtures of silane plus additives. These processes were deployed to compare deposition rates and film properties with and without additives, with a goal of maximizing the deposition rate while maintaining or improving film properties.
Date:
August 31, 2012
Creator:
Ridgeway, R. G.; Hegedus, S. S. & Podraza, N. J.
Object Type:
Report
System:
The UNT Digital Library
The Ennis Daily News (Ennis, Tex.), Ed. 1 Friday, August 31, 2012
Daily newspaper from Ennis, Texas that includes local, state and national news along with advertising.
Date:
August 31, 2012
Creator:
Todaro, Nick
Object Type:
Newspaper
System:
The Portal to Texas History
Final Technical Reprot
This report is the summary of research and a written report conducted by Energy Northwest with consultant Rhyno Stinchfield.
Date:
August 31, 2012
Creator:
Knighten, Jennifer
Object Type:
Report
System:
The UNT Digital Library
Follow-on to a report on the Applicability of the “Gallet equation” to the vegetation clearances of NERC Reliability Standard FAC-003-2
In earlier work, a study done at the Pacific Northwest National Laboratory examined a NERC proposed standard specifying clearances between vegetation and power lines. The method proposed for calculating the clearances was based on the results of testing for high-voltage line designs. An equation developed to relate the results of testing with rod-plane gaps to proposed tower window sizes was incorporated into the calculations. The equation in question, sometimes called the “Gallet equation,” describes the insulation performance of the atmosphere for air gaps of a few meters. The equation was described in the PNNL study as a good and simple-to-use way to solve a problem made difficult by the nonlinear interactions of the variables. For calculations based on this equation, a certain set of assumptions must be made. In particular, a value for a quantity called the “gap factor” is needed. This is the amount by which the gap to be modeled by the equation is stronger than the reference gap that was used in developing the Gallet equation. That reference gap is the gap between a rod and a plane. This follow-on report examines the effect on flashover probabilities of assuming an incorrect value for the gap factor. In …
Date:
August 31, 2012
Creator:
Kirkham, Harold
Object Type:
Report
System:
The UNT Digital Library
[Funeral Program for Ardelia Price, August 31, 2012]
Funeral program for Ardelia Price, born May 30, 1915 and died August 26, 2012. The funeral was held August 31, 2012 at Mount Zion First Baptist Church, officiated by Rev. Otis I. Mitchell. Funeral arrangements were made through Lewis Funeral Home and she was buried in Memory Gardens in Corpus Christ, Texas.
Date:
August 31, 2012
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History
Graduate Artist Certificate Recital: 2012-08-31 – Reuben Allred, piano
Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Graduate Artist Certificate in Music Performance.
Date:
August 31, 2012
Creator:
Allred, Reuben
Object Type:
Sound
System:
The UNT Digital Library
The Greensheet (Dallas, Tex.), Vol. 36, No. 153, Ed. 1 Friday, August 31, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
August 31, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Dallas, Tex.), Vol. 36, No. 154, Ed. 1 Friday, August 31, 2012
Free weekly newspaper that includes business and classified advertising.
Date:
August 31, 2012
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History