7,786 Matching Results

Results open in a new window/tab.

X-Ray Spectral Constraints for z ≈ 2 Massive Galaxies: The Identification of Reflection-Dominated Active Galactic Nuclei (open access)

X-Ray Spectral Constraints for z ≈ 2 Massive Galaxies: The Identification of Reflection-Dominated Active Galactic Nuclei

This article uses the 4 Ms Chandra Deep Field-South survey to place direct constraints on the ubiquity of z ≈ 2 heavily obscured active galactic nuclei.
Date: June 6, 2011
Creator: Alexander, David M.; Bauer, Franz E.; Brandt, William Nielsen; Daddi, Emanuele; Hickox, Ryan; Lehmer, Bret et al.
Object Type: Article
System: The UNT Digital Library
The X-ray Spectral Properties and Variability of Luminous High-Redshift Active Galactic Nuclei (open access)

The X-ray Spectral Properties and Variability of Luminous High-Redshift Active Galactic Nuclei

This article contains a detailed investigation of moderate- to high-quality X-ray spectra of 10 of the most luminous active galactic nuclei known at z > 4.
Date: May 20, 2005
Creator: Shemmer, Ohad; Brandt, William Nielsen; Vignali, Christian; Schneider, Donald P.; Fan, Xiaohui; Richards, Gordon T. et al.
Object Type: Article
System: The UNT Digital Library
X-Ray Unveiling Events in a z ≈ 1.6 Active Galactic Nucleus in the 7 Ms Chandra Deep Field-South (open access)

X-Ray Unveiling Events in a z ≈ 1.6 Active Galactic Nucleus in the 7 Ms Chandra Deep Field-South

Authors of the article explain that they investigated the extreme X-ray variability of a z = 1.608 active galactic nucleus in the 7 Ms Chandra Deep Field-South (XID 403), which showed two significant X-ray brightening events.
Date: May 18, 2023
Creator: Yu, Li-Ming; Luo, Bin; Brandt, William Nielsen; Bauer, Franz E.; De Cicco, D.; Fabian, Andrew C. et al.
Object Type: Article
System: The UNT Digital Library
Xenopus and the art of oxygen maintenance (open access)

Xenopus and the art of oxygen maintenance

This column article discusses the impact of Robert Boutillier and Graham Shelton's 1986 Journal of Experimental Biology paper "Gas exchange, storage and transport in voluntarily diving Xenopus laevis."
Date: November 15, 2017
Creator: Tattersall, Glenn & Burggren, Warren W.
Object Type: Article
System: The UNT Digital Library
xGDB: open-source computational infrastructure for the integrated evaluation and analysis of genome features (open access)

xGDB: open-source computational infrastructure for the integrated evaluation and analysis of genome features

Article discussing the eXtensible Genome Data Broker (xGDB) and an open-source computational infrastructure for the integrated evaluation and anlysis of genome features.
Date: November 20, 2006
Creator: Schlueter, Shannon D.; Wilkerson, Matthew D.; Dong, Qunfeng & Brendel, Volker
Object Type: Article
System: The UNT Digital Library

XML for Text Markup: An Introduction to XML Markup

This presentation introduces the extensible markup language (XML) for text markup. It explains where XML came from, the advantages, gives a comparison of XML to HTML, and discusses how XML works and can be used.
Date: 2003
Creator: Phillips, Mark Edward
Object Type: Presentation
System: The UNT Digital Library
XML to Lucene to SRW (open access)

XML to Lucene to SRW

Report for an Institute of Museum and Library Sciences (IMLS) Grant Partner Uplift Project. This report documents procedures of parsing XML records into Lucene index and making those records available via SRW.
Date: February 15, 2007
Creator: Polyakov, Serhiy
Object Type: Paper
System: The UNT Digital Library
XMM-Newton spectroscopy of the highly polarized and luminous broad absorption line quasar CSO 755 (open access)

XMM-Newton spectroscopy of the highly polarized and luminous broad absorption line quasar CSO 755

This article presents results from the XMM-Newton observations of the highly optically polarized broad absorption line quasar CSO 755.
Date: September 4, 2005
Creator: Shemmer, Ohad; Brandt, William Nielsen; Gallagher, S.C.; Vignali, Christian; Boller, Thomas; Chartas, George et al.
Object Type: Article
System: The UNT Digital Library
The XMM-SERVS survey: new XMM–Newton point-source catalogue for the XMM-LSS field (open access)

The XMM-SERVS survey: new XMM–Newton point-source catalogue for the XMM-LSS field

This article presents an X-ray point-source catalogue from the XMM-Large Scale Structure (XMMLSS) survey region, one of the XMM-Spitzer Extragalactic Representative Volume Survey (XMM-SERVS) fields.
Date: April 25, 2018
Creator: Chen, C. -T. J.; Brandt, William Nielsen; Luo, Bin; Ranalli, P.; Yang, G.; Alexander, David M. et al.
Object Type: Article
System: The UNT Digital Library
Xurography as a Rapid Fabrication Alternative for Point-of-Care Devices: Assessment of Passive Micromixers (open access)

Xurography as a Rapid Fabrication Alternative for Point-of-Care Devices: Assessment of Passive Micromixers

This article evaluates the viability of xurography as a rapid fabrication tool for the development of ultra-low cost microfluidic technology for extreme Point-of-Care (POC) micromixing devices.
Date: February 20, 2016
Creator: Martínez-López, J. Israel; Mojica, Mauricio; Rodríguez, Ciro A. & Siller Carrillo, Héctor Rafael
Object Type: Article
System: The UNT Digital Library

Y 99-4

Black, beige, and white brushstrokes are scattered evenly on the background of the painting creating a patterned surface upon which a large white to black gradation floats in the center of the canvas.
Date: 1999
Creator: Falsetta, Vincent
Object Type: Artwork
System: The UNT Digital Library

[yardage, discharged bleach on acetate material and screen printed]

The dark cloth is decorated with a variety of pinwheel shapes in a bleached out manner with over screen printing in a turquoise color.
Date: 1980~
Creator: Spear, Shigeko
Object Type: Artwork
System: The UNT Digital Library

[yardage, discharged bleach on acetate material and screen printed]

The yardage consists of a dark ground fabric with randomly placed pinwheel shapes in a variety of patterns.
Date: unknown
Creator: Spear, Shigeko
Object Type: Artwork
System: The UNT Digital Library
Yeah, I Found It!: Performing Web Site Usability Testing to Ensure that Off-Campus Students Can Find the Information They Need (open access)

Yeah, I Found It!: Performing Web Site Usability Testing to Ensure that Off-Campus Students Can Find the Information They Need

This paper discusses the results of the formal usability studies and focus groups that involved other libraries' web pages to to first determine what users appreciated or disliked about the current site. This article was co-published in The Eleventh Off-Campus Library Services Conference Proceedings.
Date: May 2004
Creator: Thomsett-Scott, Beth
Object Type: Article
System: The UNT Digital Library
The yeast lipin orthologue Pah1p is important for biogenesis of lipid droplets (open access)

The yeast lipin orthologue Pah1p is important for biogenesis of lipid droplets

Article on yeast lipin orthologue Pah1p and its importance for biogenesis of lipid droplets.
Date: March 21, 2011
Creator: Adeyo, Oludotun; Horn, Patrick J.; Lee, SungKyung; Binns, Derk Douglas; Chandrahas, Anita; Chapman, Kent D. et al.
Object Type: Article
System: The UNT Digital Library

Yellow Landscape

The oil painting depicts a landscape built up of squares of yellow, beige, brown, green and orange delineated with dark outlines. The sky area is made up of several broad areas of color.
Date: 1969~
Creator: McCarter, R. William
Object Type: Artwork
System: The UNT Digital Library

Yellow Runs on Grid and Blue or Last One In

The rectangular painting is divided into three vertical portions which are further demarcated with grid patterns. Running vertically are three long drips of thick yellow paint.
Date: 2001
Creator: Graham, Ann
Object Type: Artwork
System: The UNT Digital Library

Yes, but is it Linked Open Data?

Poster presented at Digital Frontiers. This poster presents preliminary results from an analysis of 407 success proposals to the National Endowment for the Humanities' Office of Digital Humanities grant program.
Date: September 22, 2016
Creator: Keralis, Spencer D. C.; Grumbach, Elizabeth & Potvin, Sarah
Object Type: Poster
System: The UNT Digital Library
Young Latinos Use of Mobile Phones: A Cross-Cultural Study (open access)

Young Latinos Use of Mobile Phones: A Cross-Cultural Study

Article discussing a cross-cultural study designed to analyze how young people, operationalized in this study as people of Latino descent between the ages of 18-25, are using their mobile phone for various applications and what particular gratifications they derive from using the phone.
Date: 2009
Creator: Albarran, Alan B. & Hutton, Brian
Object Type: Article
System: The UNT Digital Library
“Youth Are More Aware and Intelligent than Imagined”: The Mountain Air Youth Photovoice Project (open access)

“Youth Are More Aware and Intelligent than Imagined”: The Mountain Air Youth Photovoice Project

This article looks at respiratory illness in Appalachian Kentucky because it reports some of the highest rates of respiratory illness in the United States. As part of the Mountain Air Project, local youth were invited to share their perspectives on possible contributing factors to respiratory illness, and the authors undertook an exploratory study to determine the utility of photovoice to elicit such perspectives with this population. This study demonstrates the value of incorporating youth perspectives in environmental health research, and that photovoice was a valuable approach to elicit such perspectives.
Date: October 11, 2019
Creator: Cardarelli, Katheryn M.; Paul, Marcy; May, Beverly; Dunfee, Madeline; Browning, Steven & Schoenberg, Nancy
Object Type: Article
System: The UNT Digital Library
Youth in Apuseni Mountains, Romania, Near the Discovery Site of Tellurium (open access)

Youth in Apuseni Mountains, Romania, Near the Discovery Site of Tellurium

Front cover of the Spring 2010 issue of The Hexagon, featuring an adolescent boy wearing a sweater, corduroy pants, and boots while holding a lamb across his shoulders. He looks at the camera while standing in a bare patch of earth with grass and fallen branches behind him. To his left appear three round pictures relating to this issue's articles. The inside cover contains a table of contents, staff listings, and an editorial.
Date: Spring 2010
Creator: Marshall, James L., 1940- & Marshall, Virginia R.
Object Type: Article
System: The UNT Digital Library

Z 99-5

The abstract painting consists of shades of tan, white, black and gray with two bars of gradations floating on the surface, one lower edge and one center right.
Date: 1999
Creator: Falsetta, Vincent
Object Type: Artwork
System: The UNT Digital Library
Z-Interop 2 Project Search and Record Data Requirements for Z39.50 Interoperability Testing Using Radioactive MARC Records (open access)

Z-Interop 2 Project Search and Record Data Requirements for Z39.50 Interoperability Testing Using Radioactive MARC Records

This document is a draft version of the Z-Interop 2 project search and record data requirements for Z39.50 interoperability testing using radioactive MARC records.
Date: September 15, 2004
Creator: Moen, William E. & Benardino, Penelope
Object Type: Text
System: The UNT Digital Library
Z-Interop Interoperability Testing Policies and Procedures: Phase 1 Testing (open access)

Z-Interop Interoperability Testing Policies and Procedures: Phase 1 Testing

This document provides an overview and the details of policies and procedures of the Z39.50 Interoperability Testbed Project (referred to as Z-Interop). Specifically, the document lays out the responsibilities and obligations of the Z-Interop testbed and the organizations that participate in interoperability testing. For purposes of this document, Z-Interop staff refers to all members of the Z39.50 Interoperability Testbed Project. Z-Interop participant refers to an individual or organization who tests its Z39.50 client or Z39.50 server through the Z39.50 Interoperability Testbed.
Date: February 1, 2002
Creator: Moen, William E.
Object Type: Text
System: The UNT Digital Library