17 Matching Results

Results open in a new window/tab.

[Funeral Program for Ada Mae Godley, February 21, 2011] (open access)

[Funeral Program for Ada Mae Godley, February 21, 2011]

Funeral program for Ada Mae Godley, born November 14, 1920. The funeral was held February 21, 2011 at Calvary Baptist Church, officiated by Rev. Kevin Nelson. The funeral arrangements were made through Lewis Funeral Home and she was buried in Southern Memorial Park in San Antonio, Texas.
Date: February 21, 2011
Creator: unknown
Object Type: Pamphlet
System: The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 113, No. 085, Ed. 1 Monday, February 21, 2011 (open access)

Sweetwater Reporter (Sweetwater, Tex.), Vol. 113, No. 085, Ed. 1 Monday, February 21, 2011

Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date: February 21, 2011
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History

Senior Recital: 2011-02-21 - Austin Byrd, piano and Ian Tucker, bass

Access: Use of this item is restricted to the UNT Community
Recital presented at the UNT College of Music Kenton Hall in partial fulfillment of the Bachelor of Music (BM) degree.
Date: February 21, 2011
Creator: Byrd, Austin & Tucker, Ian
Object Type: Sound
System: The UNT Digital Library
The Department of Defense's Use of Private Security Contractors in Afghanistan and Iraq: Background, Analysis, and Options for Congress (open access)

The Department of Defense's Use of Private Security Contractors in Afghanistan and Iraq: Background, Analysis, and Options for Congress

This report examines current private security contractor (PSC) trends in Afghanistan and Iraq, steps the Department of Defense (DOD) has taken to improve oversight and management, and the impact that using private security personnel can have on military operations. It also reviews steps Congress has taken to exercise oversight over the use of PSCs and includes options for Congress.
Date: February 21, 2011
Creator: Schwartz, Moshe
Object Type: Report
System: The UNT Digital Library
Selection of Ionic Liquid Solvents for Chemical Separations Based on the Abraham Model (open access)

Selection of Ionic Liquid Solvents for Chemical Separations Based on the Abraham Model

Book chapter on the selection of ionic liquid solvents for chemical separations based on the Abraham model.
Date: February 21, 2011
Creator: Acree, William E. (William Eugene); Grubbs, Laura M. & Abraham, M. H. (Michael H.)
Object Type: Book Chapter
System: The UNT Digital Library

Doctoral Recital: 2011-02-21 - Armin Abdihodžić, guitar

Recital presented at the UNT College of Music Voertman Hall in partial fulfillment of the Doctor of Musical Arts (DMA) degree.
Date: February 21, 2011
Creator: Abdihodžić, Armin
Object Type: Sound
System: The UNT Digital Library
Phase Preference by Active, Acetate-Utilizing Bacteria at the Rifle, CO Integrated Field Research Challenge Site (open access)

Phase Preference by Active, Acetate-Utilizing Bacteria at the Rifle, CO Integrated Field Research Challenge Site

Previous experiments at the Rifle, Colorado Integrated Field Research Challenge (IFRC) site demonstrated that field-scale addition of acetate to groundwater reduced the ambient soluble uranium concentration. In this report, sediment samples collected before and after acetate field addition were used to assess the active microbes via {sup 13}C acetate stable isotope probing on 3 phases [coarse sand, fines (8-approximately 150 {micro}m), groundwater (0.2-8 {micro}m)] over a 24-day time frame. TRFLP results generally indicated a stronger signal in {sup 13}C-DNA in the 'fines' fraction compared to the sand and groundwater. Before the field-scale acetate addition, a Geobacter-like group primarily synthesized {sup 13}C-DNA in the groundwater phase, an alpha Proteobacterium primarily grew on the fines/sands, and an Acinetobacter sp. and Decholoromonas-like OTU utilized much of the {sup 13}C acetate in both groundwater and particle-associated phases. At the termination of the field-scale acetate addition, the Geobacter-like species was active on the solid phases rather than the groundwater, while the other bacterial groups had very reduced newly synthesized DNA signal. These findings will help to delineate the acetate utilization patterns of bacteria in the field and can lead to improved methods for stimulating distinct microbial populations in situ.
Date: February 21, 2011
Creator: Kerkhof, L.; Williams, K.H.; Long, P.E. & McGuinness, L.
Object Type: Article
System: The UNT Digital Library
Simplified models for mask roughness induced LER (open access)

Simplified models for mask roughness induced LER

The ITRS requires < 1.2nm line-edge roughness (LER) for the 22nm half-pitch node. Currently, we can consistently achieve only about 3nm LER. Further progress requires understanding the principle causes of LER. Much work has already been done on how both the resist and LER on the mask effect the final printed LER. What is poorly understood, however, is the extent to which system-level effects such as mask surface roughness, illumination conditions, and defocus couple to speckle at the image plane, and factor into LER limits. Presently, mask-roughness induced LER is studied via full 2D aerial image modeling and subsequent analysis of the resulting image. This method is time consuming and cumbersome. It is, therefore, the goal of this research to develop a useful 'rule-of-thumb' analytic model for mask roughness induced LER to expedite learning and understanding.
Date: February 21, 2011
Creator: McClinton, Brittany & Naulleau, Patrick
Object Type: Article
System: The UNT Digital Library
Quantitative evaluation of mask phase defects from through-focus EUV aerial images (open access)

Quantitative evaluation of mask phase defects from through-focus EUV aerial images

Mask defects inspection and imaging is one of the most important issues for any pattern transfer lithography technology. This is especially true for EUV lithography where the wavelength-specific properties of masks and defects necessitate actinic inspection for a faithful prediction of defect printability and repair performance. In this paper we will present a technique to obtain a quantitative characterization of mask phase defects from EUV aerial images. We apply this technique to measure the aerial image phase of native defects on a blank mask, measured with the SEMATECH Berkeley Actinic Inspection Tool (AIT) an EUV zoneplate microscope that operates at Lawrence Berkeley National Laboratory. The measured phase is compared with predictions made from AFM top-surface measurements of those defects. While amplitude defects are usually easy to recognize and quantify with standard inspection techniques like scanning electron microscopy (SEM), defects or structures that have a phase component can be much more challenging to inspect. A phase defect can originate from the substrate or from any level of the multilayer. In both cases its effect on the reflected field is not directly related to the local topography of the mask surface, but depends on the deformation of the multilayer structure. Using the …
Date: February 21, 2011
Creator: Mochi, Iacopo; Yamazoe, Kenji; Neureuther, Andrew & Goldberg, Kenneth A.
Object Type: Article
System: The UNT Digital Library
Absorber height effects on SWA restrictions and 'Shadow' LER (open access)

Absorber height effects on SWA restrictions and 'Shadow' LER

As extreme-ultraviolet lithography (EUVL) approaches introduction at the 22-nm half-pitch node, several key aspects of absorber height effects remain unexplored. In particular, sidewall angle (SWA) restrictions based on the height of the mask absorber has not yet been clearly defined. In addition, the effects of absorber height on line-edge roughness (LER) from shadowing has not been examined. We make an initial investigation into how tight SWA constraints are and the extent to which shadow LER alters basic LER. Our approach to SWA aims to find SWA restrictions based on 10% of the total CD error budget (10% of CD). Thus, we allot the SWA budget a {+-}0.2nm tolerance for 22nm half-pitch. New with EUVL is the off-axis illumination system. One potential pitfall that must be carefully monitored is the effect of mask absorber height blocking light from reaching, and therefore, correctly detecting, the base edge position of a feature. While mask features can correctly compensate sizing to target at the wafer, the effects of this shadowing on LER have not yet been investigated. Specifically, shadow LER may exacerbate or mitigate the inherent LER on the mask. Shadowing may also cause a difference in the observed LER on the right and …
Date: February 21, 2011
Creator: McClinton, Brittany & Naulleau, Patrick
Object Type: Article
System: The UNT Digital Library
Lessons Learned From an Installation Perspective for Chemicaal Demilitarization Plant Start-Up at Four Operating Incineration Sites. (open access)

Lessons Learned From an Installation Perspective for Chemicaal Demilitarization Plant Start-Up at Four Operating Incineration Sites.

This study presents the lessons learned by chemical storage installations as they prepared for the start of chemical demilitarization plant operations at the four current chemical incinerator sites in Alabama, Arkansas, Oregon, and Utah. The study included interviews with persons associated with the process and collection of available documents prepared at each site. The goal was to provide useful information for the chemical weapons storage sites in Colorado and Kentucky that will be going through plant start-up in the next few years. The study is not a compendium of what to do and what not to do. The information has been categorized into ten lessons learned; each is discussed individually. Documents that may be useful to the Colorado and Kentucky sites are included in the appendices. This study should be used as a basis for planning and training.
Date: February 21, 2011
Creator: Motz, L. & Sciences, Decision and Information
Object Type: Report
System: The UNT Digital Library
Tests of Radiation-Hard Silicon Microstrip Sensors for CMS in S-LHC (open access)

Tests of Radiation-Hard Silicon Microstrip Sensors for CMS in S-LHC

The tests are to study the performance of various silicon microstrip sensors that are sufficiently radiation-hard to be considered as candidates for the CMS outer (R > 25cm) tracker in the second phase of the currently envisioned S-LHC upgrade. The main goal of the beam test is to test Float Zone (FZ) and Magnetic Czochralski (MCz) silicon sensors that have been procured from Hamamatsu by the CMS collaboration as possible replacements for the CMS outer tracker for phase 2 operations. The detectors under test (DUT) will be isntalled in a cold box that contains 10 slots for modules based on CMS Tracker hybrids. Slots 1-4 and 7-10 are occupied by reference planes and slots 5 and 6 are reserved for DUTs. The box is cooled by Peltier elements in thermal contact with the top and bottom aluminum baseplates and is typically operated at around -25 C. A PCI based version of the CMS DAQ is used to read out the 10 slots based on triggers provided by beam scintillation counters. Given the low rate of beam particles the hybrid APVs will be operated in Peak mode, which maximizes the signal-to-noise performance of the readout chips. The internal clock operates at …
Date: February 21, 2011
Creator: Luukka, Panja; Maenpaa, Teppo; Tuovinen, Esa; Spiegel, Lenny & Flight, Robert
Object Type: Report
System: The UNT Digital Library
LER control and mitigation: mask roughness induced LER (open access)

LER control and mitigation: mask roughness induced LER

In the push towards commercialization of extreme-ultraviolet lithography (EUVL), meeting the stringent requirements for line-edge roughness (LER) is increasingly challenging. For the 22-nm half-pitch node and below, the ITRS requires under 1.2 nm LER. Much of this LER is thought to arise from three significant contributors: LER on the mask absorber pattern, LER from the resist, and LER from mask roughness induced speckle. The physical mechanism behind the last contributor is becoming clearer, but how it is affected by the presence of aberrations is less well understood. Here, we conduct a full 2D aerial image simulation analysis of aberrations sensitivities of mask roughness induced LER for the first 37 fringe zernikes. These results serve as a guideline for future LER aberrations control. In examining how to mitigate mask roughness induced LER, we next consider an alternate illumination scheme whereby a traditional dipole's angular spectrum is extended in the direction parallel to the line-and-space mask absorber pattern to represent a 'strip'. While this illumination surprisingly provides merely minimal improvement to the LER as several alternate illumination schemes, overall imaging quality in terms of ILS, NILS, and contrast is improved. While the 22-nm half-pitch node can tolerate significant aberrations from a mask …
Date: February 21, 2011
Creator: McClinton, Brittany & Naulleau, Patrick
Object Type: Article
System: The UNT Digital Library
Journal of the House of Representatives of Texas: 82nd Legislature, Regular Session, Monday, February 21, 2011 (open access)

Journal of the House of Representatives of Texas: 82nd Legislature, Regular Session, Monday, February 21, 2011

Proceedings of the House of Representatives of Texas for the twenty-second day of the regular session of the 82nd Legislature documenting legislation, reports, discussions, votes, and points-of-order.
Date: February 21, 2011
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 96, No. 99, Ed. 1 Monday, February 21, 2011 (open access)

The Oklahoma Daily (Norman, Okla.), Vol. 96, No. 99, Ed. 1 Monday, February 21, 2011

Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date: February 21, 2011
Creator: Moriak, Meredith
Object Type: Newspaper
System: The Gateway to Oklahoma History
Single actomyosin motor interactions in skeletal muscle (open access)

Single actomyosin motor interactions in skeletal muscle

This article presents a study of intramuscular motion during contraction of skeletal muscle myofibrils.
Date: February 21, 2011
Creator: Földes-Papp, Zeno; Liao, Jeff Shih-Chu; Barbieri, Ben; Grycznski, Karol G.; Luchowski, Rafal; Gryczynski, Ignacy et al.
Object Type: Article
System: The UNT Digital Library
The Ranger (San Antonio, Tex.), Vol. 85, No. 14, Ed. 1 Monday, February 21, 2011 (open access)

The Ranger (San Antonio, Tex.), Vol. 85, No. 14, Ed. 1 Monday, February 21, 2011

Weekly student newspaper from San Antonio College in San Antonio, Texas that includes campus news along with advertising.
Date: February 21, 2011
Creator: San Antonio College
Object Type: Newspaper
System: The Portal to Texas History