Latest content added for UNT Digital Library Searchhttps://digital2.library.unt.edu/search/?t=fulltext&fq=str_month%3A05_may&sort=date_d2023-06-16T13:12:35-05:00UNT LibrariesThis is a custom feed for searching UNT Digital Library SearchInvestigations Into Using Machine Learning Models to Automate the Sorting of Digitized Texas State Publications.2023-06-16T13:12:35-05:00https://digital.library.unt.edu/ark:/67531/metadc2123261/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc2123261/"><img alt="Investigations Into Using Machine Learning Models to Automate the Sorting of Digitized Texas State Publications." title="Investigations Into Using Machine Learning Models to Automate the Sorting of Digitized Texas State Publications." src="https://digital.library.unt.edu/ark:/67531/metadc2123261/thumbnail/"/></a></p><p>This poster highlighting the development of machine learning model to automate part of the process of digitizing and archiving documents from the Texas State Depository Program. This particular part of the process is the sorting of documents to facilitate metadata creation. It was presented at the 2023 Texas Conference on Digital Libraries (TCDL) held May 16-18, 2023 in Austin, Texas.</p>University of North Texas Open Access Publication Review (2019-2021): Workflows and Insights2022-08-09T19:53:32-05:00https://digital.library.unt.edu/ark:/67531/metadc1975615/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1975615/"><img alt="University of North Texas Open Access Publication Review (2019-2021): Workflows and Insights" title="University of North Texas Open Access Publication Review (2019-2021): Workflows and Insights" src="https://digital.library.unt.edu/ark:/67531/metadc1975615/thumbnail/"/></a></p><p>This poster presents results, workflows, and process insights into an Open Access publication review of UNT-affiliated authors. Publication data from 2019-2021 of UNT-affiliated authors was reviewed for the purpose of including it in the institutional repository, UNT Scholarly Works. It was presented at the Texas Conference on Digital Libraries which was held virtually May 23-26, 2022.</p>Let's Git Creative: Using GitLab to Improve the Institutional Repository Workflow at the University of North Texas2022-02-02T09:33:25-06:00https://digital.library.unt.edu/ark:/67531/metadc1898199/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1898199/"><img alt="Let's Git Creative: Using GitLab to Improve the Institutional Repository Workflow at the University of North Texas" title="Let's Git Creative: Using GitLab to Improve the Institutional Repository Workflow at the University of North Texas" src="https://digital.library.unt.edu/ark:/67531/metadc1898199/thumbnail/"/></a></p><p>Poster examining the use of GitLab by the University of North Texas Libraries' institutional repository. GitLab provided the ability to track and communicate priorities for items submitted to the repository. It was presented at the Texas Conference on Digital Libraries (TCDL) on May 24-26, 2021.</p>Creating Communities of Practice among Librarians in an Online Learning Environment2021-08-18T09:01:04-05:00https://digital.library.unt.edu/ark:/67531/metadc1833273/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1833273/"><img alt="Creating Communities of Practice among Librarians in an Online Learning Environment" title="Creating Communities of Practice among Librarians in an Online Learning Environment" src="https://digital.library.unt.edu/ark:/67531/metadc1833273/thumbnail/"/></a></p><p>This poster applies the concept of an online community of practice in an effort to suggest how librarians can join together as a community to learn and to share ideas, strategies, and tools related to effective teaching and learning. It was presented at The Exchange an Association for Library Collections and Technical Services (ALCTS)/Library and Information Technology Association (LITA)/Library Leadership and Management (LLAMA) Collaboration held virtually on May 4, 6, & 8, 2020</p>To Co-Author or Not?2020-06-05T16:16:36-05:00https://digital.library.unt.edu/ark:/67531/metadc1639368/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1639368/"><img alt="To Co-Author or Not?" title="To Co-Author or Not?" src="https://digital.library.unt.edu/ark:/67531/metadc1639368/thumbnail/"/></a></p><p>This poster focuses on how to approach collaborative research. Learn how to choose team members, facilitate collaboration and organize all the elements of a project to create a successful publication or presentation. Also included are administrative responsibilities, thoughts on handling problems, examples of delineating responsibilities. It was presented at The Exchange an Association for Library Collections and Technical Services (ALCTS)/Library and Information Technology Association (LITA)/Library Leadership and Management (LLAMA) Collaboration held virtually on May 4, 6, & 8, 2020.</p>Transparency on Journal Pricing - Make a List!2020-06-05T16:16:36-05:00https://digital.library.unt.edu/ark:/67531/metadc1639376/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1639376/"><img alt="Transparency on Journal Pricing - Make a List!" title="Transparency on Journal Pricing - Make a List!" src="https://digital.library.unt.edu/ark:/67531/metadc1639376/thumbnail/"/></a></p><p>This poster discusses the creation and value of UNT Libraries Serials Transparency List that contains the subscription pricing information they receive from publishers. The list promotes transparency in journal pricing and informed decision-making in collection development. It was presented at The Exchange an Association for Library Collections and Technical Services (ALCTS)/Library and Information Technology Association (LITA)/Library Leadership and Management (LLAMA) Collaboration held virtually on May 4, 6, & 8, 2020.</p>Facilitating User Access through the Extraction of Documents from Digital Archives2019-08-27T14:15:33-05:00https://digital.library.unt.edu/ark:/67531/metadc1533634/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1533634/"><img alt="Facilitating User Access through the Extraction of Documents from Digital Archives" title="Facilitating User Access through the Extraction of Documents from Digital Archives" src="https://digital.library.unt.edu/ark:/67531/metadc1533634/thumbnail/"/></a></p><p>Poster presented at the 2019 Texas Conference on Digital Libraries (TCDL-2019). This poster discusses about the University of North Texas' archive of government websites known as the CyberCemetery. The UNT Libraries have begun to extract documents embedded within the vast collection of web archives. Many of these documents include reports and transcripts from the various committees and agencies found in the collections. Through this project, the UNT Digital Library expands its role as a steward of digital resources in addition to making information easier to find.</p>Hidden Gems: A Partnership Between the Digitization Lab and Photography Studio Art at UNT2019-07-02T13:37:49-05:00https://digital.library.unt.edu/ark:/67531/metadc1506777/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1506777/"><img alt="Hidden Gems: A Partnership Between the Digitization Lab and Photography Studio Art at UNT" title="Hidden Gems: A Partnership Between the Digitization Lab and Photography Studio Art at UNT" src="https://digital.library.unt.edu/ark:/67531/metadc1506777/thumbnail/"/></a></p><p>Poster presented at the 2019 Texas Conference on Digital Libraries (TCDL-2019). This poster discusses how inter-departmental partnerships, particularly between UNT's Digital Libraries and Department of Photography and Studio Art can provide a win win collaborative environment for all parties involved. While the Digital Projects Lab can hire experienced photographers to operate and oversee its capturing system, as the same time MFA students can gain high level photography experiences in a real world project outside of the College of Visual Arts and Design which would help them diversify their skillset.</p>Information-Seeking Behavior of Speakers of Endangered Languages: An Anthropological Approach2021-03-05T12:49:52-06:00https://digital.library.unt.edu/ark:/67531/metadc1757962/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1757962/"><img alt="Information-Seeking Behavior of Speakers of Endangered Languages: An Anthropological Approach" title="Information-Seeking Behavior of Speakers of Endangered Languages: An Anthropological Approach" src="https://digital.library.unt.edu/ark:/67531/metadc1757962/thumbnail/"/></a></p><p>Poster exploring the approach to understand information behavior of communities speaking endangered languages.</p>Right Now, You're Helping the Health of the Baby You're Carrying2019-01-31T21:03:17-06:00https://texashistory.unt.edu/ark:/67531/metapth1113832/<p><a href="https://texashistory.unt.edu/ark:/67531/metapth1113832/"><img alt="Right Now, You're Helping the Health of the Baby You're Carrying" title="Right Now, You're Helping the Health of the Baby You're Carrying" src="https://texashistory.unt.edu/ark:/67531/metapth1113832/thumbnail/"/></a></p><p>2 posters promoting the importance of regular doctor visits and listing questions for women to ask their doctors about their health. The first poster is aimed at pregnant women and includes questions about breastfeeding, relationships, and birth plans. The second poster is aimed at women hoping to become pregnant and includes questions about lifestyle, medical history, and general health.</p>[Concert Poster: For Now album release show]2019-01-10T21:32:45-06:00https://digital.library.unt.edu/ark:/67531/metadc1401424/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1401424/"><img alt="[Concert Poster: For Now album release show]" title="[Concert Poster: For Now album release show]" src="https://digital.library.unt.edu/ark:/67531/metadc1401424/thumbnail/"/></a></p><p>Poster advertising an album release concert and Q&A by For Now with Truskco on May 24, 2018, at Dan's Silverleaf in Denton, TX. Faded black background with light purple lettering detailing event information. Time lapse photographs of a white cat being dropped on the ground in the middle of the poster.</p>Approaches developed to ensure accuracy and consistency of metadata for TRAIL reports2017-06-20T09:03:14-05:00https://digital.library.unt.edu/ark:/67531/metadc980804/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc980804/"><img alt="Approaches developed to ensure accuracy and consistency of metadata for TRAIL reports" title="Approaches developed to ensure accuracy and consistency of metadata for TRAIL reports" src="https://digital.library.unt.edu/ark:/67531/metadc980804/thumbnail/"/></a></p><p>Poster for the 2017 Texas Conference on Digital Libraries. This poster discusses metadata remediation issues within the UNT Libraries TRAIL collection focused on identifying and measuring issues related to incomplete records and creation date discrepancies.</p>UNT Libraries ETD Citation Analysis Project2017-06-20T09:03:14-05:00https://digital.library.unt.edu/ark:/67531/metadc980819/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc980819/"><img alt="UNT Libraries ETD Citation Analysis Project" title="UNT Libraries ETD Citation Analysis Project" src="https://digital.library.unt.edu/ark:/67531/metadc980819/thumbnail/"/></a></p><p>Poster for the 2017 Texas Conference on Digital Libraries. This poster discusses results from an analysis of UNT Electronic Theses and Dissertations citing URLs to items from the UNT Digital Library and The Portal to Texas History.</p>[Concert Poster: Backyard Block Party]2021-02-12T12:42:37-06:00https://digital.library.unt.edu/ark:/67531/metadc1755808/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1755808/"><img alt="[Concert Poster: Backyard Block Party]" title="[Concert Poster: Backyard Block Party]" src="https://digital.library.unt.edu/ark:/67531/metadc1755808/thumbnail/"/></a></p><p>Poster/flyer advertising a music festival with headliners Sailor Poon, Hikes, Whit, Dome Dwellers, and Sealion on May 16-18, 2017 at Backyard On Bell. Poster features artwork of a red-headed woman (visuals by Emily O'Connor) and lists all musical acts performing at the festival.</p>[Concert Poster: The Walters]2021-02-12T12:43:04-06:00https://digital.library.unt.edu/ark:/67531/metadc1755836/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1755836/"><img alt="[Concert Poster: The Walters]" title="[Concert Poster: The Walters]" src="https://digital.library.unt.edu/ark:/67531/metadc1755836/thumbnail/"/></a></p><p>Poster/flyer advertising a concert by The Walters featuring Summer Salt, Delmer Dennis & The Mermen, and Acid Carousel on May 6, 2017, at Andy's Bar.</p>Analysis Gender Stereotypes in Perception Profile of Conduct in Track and Field2020-03-03T22:24:12-06:00https://digital.library.unt.edu/ark:/67531/metadc1616618/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1616618/"><img alt="Analysis Gender Stereotypes in Perception Profile of Conduct in Track and Field" title="Analysis Gender Stereotypes in Perception Profile of Conduct in Track and Field" src="https://digital.library.unt.edu/ark:/67531/metadc1616618/thumbnail/"/></a></p><p>This poster was present at the International Association of Physical Education & Sport for Girls & Women (IAPESGW) 18th World Congress in May 2017 at Barry University, Miami Shores. The poster examines gender stereotypes of men and women's profile of conduct in athletics.</p>Beyond Text: Best Practices for Cataloging Music-ETDs and Associated Audio-Visual Materials2016-06-10T06:09:45-05:00https://digital.library.unt.edu/ark:/67531/metadc848622/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc848622/"><img alt="Beyond Text: Best Practices for Cataloging Music-ETDs and Associated Audio-Visual Materials" title="Beyond Text: Best Practices for Cataloging Music-ETDs and Associated Audio-Visual Materials" src="https://digital.library.unt.edu/ark:/67531/metadc848622/thumbnail/"/></a></p><p>This poster discusses issues and considerations in describing and integrating ETDs and associated content.</p>Recommended Library Contributions to Retention of Premedical Students2015-05-29T21:36:03-05:00https://digital.library.unt.edu/ark:/67531/metadc505771/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc505771/"><img alt="Recommended Library Contributions to Retention of Premedical Students" title="Recommended Library Contributions to Retention of Premedical Students" src="https://digital.library.unt.edu/ark:/67531/metadc505771/thumbnail/"/></a></p><p>Poster for the 2015 Medical Library Association Annual Meeting and Exhibition. This poster discusses recommended library contributions to the retention of premedical students.</p>Counselor Student Relationships and Application Status2015-07-09T06:19:06-05:00https://digital.library.unt.edu/ark:/67531/metadc674072/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc674072/"><img alt="Counselor Student Relationships and Application Status" title="Counselor Student Relationships and Application Status" src="https://digital.library.unt.edu/ark:/67531/metadc674072/thumbnail/"/></a></p><p>Poster for the 2015 UNT Student Portraits Symposium. This poster discusses counselor student relationships and application statuses.</p>First Annual UNT Lesbian, Gay, Bisexual, Transgender, Queer/Questioning, Intersex, Ally Career and Resource Fair: Equality in the Workplace2015-05-29T21:36:03-05:00https://digital.library.unt.edu/ark:/67531/metadc505781/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc505781/"><img alt="First Annual UNT Lesbian, Gay, Bisexual, Transgender, Queer/Questioning, Intersex, Ally Career and Resource Fair: Equality in the Workplace" title="First Annual UNT Lesbian, Gay, Bisexual, Transgender, Queer/Questioning, Intersex, Ally Career and Resource Fair: Equality in the Workplace" src="https://digital.library.unt.edu/ark:/67531/metadc505781/thumbnail/"/></a></p><p>Poster for the 2015 UNT Student Portraits Symposium. This poster discusses equity in the workplace and the First Annual UNT Lesbian, Gay, Bisexual, Transgender, Queer/Questioning, Intersex, and Ally (LGBTQIA) Career and Resource Fair.</p>Take Flight 2015 - Job Shadowing Program: UNT Career Center - Experiential Education and Student Employment Team Project2015-05-29T21:36:03-05:00https://digital.library.unt.edu/ark:/67531/metadc505730/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc505730/"><img alt="Take Flight 2015 - Job Shadowing Program: UNT Career Center - Experiential Education and Student Employment Team Project" title="Take Flight 2015 - Job Shadowing Program: UNT Career Center - Experiential Education and Student Employment Team Project" src="https://digital.library.unt.edu/ark:/67531/metadc505730/thumbnail/"/></a></p><p>Poster for the 2015 UNT Student Portraits Symposium. This poster discusses the Take Flight job shadowing program through the UNT Career Center.</p>Breast Milk every ounce counts2019-01-31T21:03:17-06:00https://texashistory.unt.edu/ark:/67531/metapth1114154/<p><a href="https://texashistory.unt.edu/ark:/67531/metapth1114154/"><img alt="Breast Milk every ounce counts" title="Breast Milk every ounce counts" src="https://texashistory.unt.edu/ark:/67531/metapth1114154/thumbnail/"/></a></p><p>Poster of a woman wearing a lab coat with the text, "As a doctor i know breastfeeding is the healthiest thing you can do for your baby. As a mother i feel it is the most beautiful." printed at the top of the poster.</p>University of North Texas Libraries: We make a difference in our student's and faculty's lives2015-07-09T06:19:06-05:00https://digital.library.unt.edu/ark:/67531/metadc674105/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc674105/"><img alt="University of North Texas Libraries: We make a difference in our student's and faculty's lives" title="University of North Texas Libraries: We make a difference in our student's and faculty's lives" src="https://digital.library.unt.edu/ark:/67531/metadc674105/thumbnail/"/></a></p><p>Poster for the 2015 UNT Student Portraits Symposium. This poster discusses the University of North Texas (UNT) Libraries making a difference for students and faculty.</p>One Bookmark to Rule Them All: How the use of a bookmark linked to the Librarian's LibGuides profile can empower research and serve the instructional materials needs of the Librarian2014-06-24T13:10:07-05:00https://digital.library.unt.edu/ark:/67531/metadc304838/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc304838/"><img alt="One Bookmark to Rule Them All: How the use of a bookmark linked to the Librarian's LibGuides profile can empower research and serve the instructional materials needs of the Librarian" title="One Bookmark to Rule Them All: How the use of a bookmark linked to the Librarian's LibGuides profile can empower research and serve the instructional materials needs of the Librarian" src="https://digital.library.unt.edu/ark:/67531/metadc304838/thumbnail/"/></a></p><p>Poster presented at the Art Libraries Society of North America Annual Conference. This poster discusses how the use of a bookmark linked to the Librarian's LibGuides profile can empower research and serve the instructional materials needs of the Librarian.</p>Current Quality Assurance Practices in Web Archiving [Poster]2013-05-16T10:39:50-05:00https://digital.library.unt.edu/ark:/67531/metadc159526/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc159526/"><img alt="Current Quality Assurance Practices in Web Archiving [Poster]" title="Current Quality Assurance Practices in Web Archiving [Poster]" src="https://digital.library.unt.edu/ark:/67531/metadc159526/thumbnail/"/></a></p><p>Poster presented at the 2013 Texas Conference on Digital Libraries. This poster discusses research on the current quality assurance practices in the web archiving community.</p>The Denton Declaration: An Open Data Manifesto2013-05-16T10:39:50-05:00https://digital.library.unt.edu/ark:/67531/metadc159525/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc159525/"><img alt="The Denton Declaration: An Open Data Manifesto" title="The Denton Declaration: An Open Data Manifesto" src="https://digital.library.unt.edu/ark:/67531/metadc159525/thumbnail/"/></a></p><p>Poster for 2013 Texas Conference on Digital Libraries (TCDL). This poster discusses the Denton Declaration, an open data manifesto created in May 2012 at the University of North Texas (UNT).</p>Digital Curation Micro-Applications: Digital Lifecycle Management with AutoHotkey2013-05-16T10:39:50-05:00https://digital.library.unt.edu/ark:/67531/metadc159530/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc159530/"><img alt="Digital Curation Micro-Applications: Digital Lifecycle Management with AutoHotkey" title="Digital Curation Micro-Applications: Digital Lifecycle Management with AutoHotkey" src="https://digital.library.unt.edu/ark:/67531/metadc159530/thumbnail/"/></a></p><p>Poster presented at the 2013 Texas Conference on Digital Libraries. This poster discusses open source software tools coded with AutoHotkey that the UNT digital libraries group has developed for digital curation during the pre-ingest stage of the digital resource lifecycle.</p>Implementation of a New Date/Time Standard in Digital Library Metadata2013-05-16T10:39:50-05:00https://digital.library.unt.edu/ark:/67531/metadc159532/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc159532/"><img alt="Implementation of a New Date/Time Standard in Digital Library Metadata" title="Implementation of a New Date/Time Standard in Digital Library Metadata" src="https://digital.library.unt.edu/ark:/67531/metadc159532/thumbnail/"/></a></p><p>Poster illustrating issues involved in fully-implementing the Extended Date/Time Format (EDTF) standards in the UNT Libraries' digital collections, comprising The Portal to Texas History, the UNT Digital Library, and The Gateway to Oklahoma History.</p>Mapping the Southwest Project: Putting the Region's Maps Online2013-05-16T10:39:50-05:00https://digital.library.unt.edu/ark:/67531/metadc159528/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc159528/"><img alt="Mapping the Southwest Project: Putting the Region's Maps Online" title="Mapping the Southwest Project: Putting the Region's Maps Online" src="https://digital.library.unt.edu/ark:/67531/metadc159528/thumbnail/"/></a></p><p>This poster discusses the Mapping the Southwest Project, involving putting our region's maps online. The poster includes background information on the project, the project plan, workflow and equipment, and the impacts and lessons learned.</p>Scanning TRAIL Project Technical Reports: A Workflow for a Large-Scale Collaborative Digitization Effort2013-05-16T10:39:50-05:00https://digital.library.unt.edu/ark:/67531/metadc159538/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc159538/"><img alt="Scanning TRAIL Project Technical Reports: A Workflow for a Large-Scale Collaborative Digitization Effort" title="Scanning TRAIL Project Technical Reports: A Workflow for a Large-Scale Collaborative Digitization Effort" src="https://digital.library.unt.edu/ark:/67531/metadc159538/thumbnail/"/></a></p><p>Poster illustrating the workflow used in the University of North Texas (UNT) Digital Projects Unit to digitize large numbers of TRAIL (Technical Report and Image Library) documents.</p>[Concert Poster: A Taste of Herb]2019-01-10T21:32:45-06:00https://digital.library.unt.edu/ark:/67531/metadc1401299/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1401299/"><img alt="[Concert Poster: A Taste of Herb]" title="[Concert Poster: A Taste of Herb]" src="https://digital.library.unt.edu/ark:/67531/metadc1401299/thumbnail/"/></a></p><p>Poster advertising a concert by A Taste of Herb, Mariachi Quetzal and Los Patos Poderosos on May 4, 2013, at Dan's Silverleaf in Denton, TX. Abstract artwork by Nevada Hill in red, green and black on a white background.</p>Metadata Quality Enhancement for Large Digital Collections: Web Browser Automation with Selenium IDE2012-06-08T10:10:35-05:00https://digital.library.unt.edu/ark:/67531/metadc86138/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc86138/"><img alt="Metadata Quality Enhancement for Large Digital Collections: Web Browser Automation with Selenium IDE" title="Metadata Quality Enhancement for Large Digital Collections: Web Browser Automation with Selenium IDE" src="https://digital.library.unt.edu/ark:/67531/metadc86138/thumbnail/"/></a></p><p>Poster presented at the 2012 TCDL Annual Conference. This poster discusses metadata quality enhancement for large digital collections.</p>The Denton Declaration: An Open Data Manifesto2013-02-01T09:58:57-06:00https://digital.library.unt.edu/ark:/67531/metadc139457/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc139457/"><img alt="The Denton Declaration: An Open Data Manifesto" title="The Denton Declaration: An Open Data Manifesto" src="https://digital.library.unt.edu/ark:/67531/metadc139457/thumbnail/"/></a></p><p>Poster promoting The Denton Declaration, an open data manifesto created in May 2012 at the University of North Texas (UNT).</p>Enhancing Content Visibility in Institutional Repositories: Maintaining Metadata Consistency Across Digital Collections2012-06-08T10:10:35-05:00https://digital.library.unt.edu/ark:/67531/metadc86151/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc86151/"><img alt="Enhancing Content Visibility in Institutional Repositories: Maintaining Metadata Consistency Across Digital Collections" title="Enhancing Content Visibility in Institutional Repositories: Maintaining Metadata Consistency Across Digital Collections" src="https://digital.library.unt.edu/ark:/67531/metadc86151/thumbnail/"/></a></p><p>Poster presented at the 2012 Texas Conference on Digital Libraries. This poster discusses enhancing content visibility in institutional repositories and maintaining metadata consistency across digital collections.</p>Spirituality, Stigma, Anger and Stress: Correlates of Forgiveness in an HIV+ Sample2016-08-07T16:03:58-05:00https://digital.library.unt.edu/ark:/67531/metadc855960/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc855960/"><img alt="Spirituality, Stigma, Anger and Stress: Correlates of Forgiveness in an HIV+ Sample" title="Spirituality, Stigma, Anger and Stress: Correlates of Forgiveness in an HIV+ Sample" src="https://digital.library.unt.edu/ark:/67531/metadc855960/thumbnail/"/></a></p><p>This poster examines how spirituality, stigma, anger and stress can account for a significant proportion of the variance in forgiveness in an HIV+ sample.</p>International Internet Preservation Consortium 2011 General Assembly, May 9-13, 20112020-02-03T21:04:03-06:00https://digital.library.unt.edu/ark:/67531/metadc1610919/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1610919/"><img alt="International Internet Preservation Consortium 2011 General Assembly, May 9-13, 2011" title="International Internet Preservation Consortium 2011 General Assembly, May 9-13, 2011" src="https://digital.library.unt.edu/ark:/67531/metadc1610919/thumbnail/"/></a></p><p>Programme for the 2011 International Internet Preservation Consortium General Assembly.</p>La Alimentacion de Su Bebe Prematuro, Paso a Paso2015-12-15T16:32:23-06:00https://texashistory.unt.edu/ark:/67531/metapth661802/<p><a href="https://texashistory.unt.edu/ark:/67531/metapth661802/"><img alt="La Alimentacion de Su Bebe Prematuro, Paso a Paso" title="La Alimentacion de Su Bebe Prematuro, Paso a Paso" src="https://texashistory.unt.edu/ark:/67531/metapth661802/thumbnail/"/></a></p><p>Brief guide on feeding for premature babies. Guide is broken into age months with acceptable foods to try sorted according to eating and developmental milestones.</p>Retrospective Digitization of Theses and Dissertations: Revisiting Issues and Considerations2011-06-07T08:36:49-05:00https://digital.library.unt.edu/ark:/67531/metadc36269/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc36269/"><img alt="Retrospective Digitization of Theses and Dissertations: Revisiting Issues and Considerations" title="Retrospective Digitization of Theses and Dissertations: Revisiting Issues and Considerations" src="https://digital.library.unt.edu/ark:/67531/metadc36269/thumbnail/"/></a></p><p>Poster presented at the 2011 U.S. ETD Annual Conference. The poster describes the digitization of theses and dissertations at the University of North Texas (UNT) Libraries.</p>[SLR Scrabble Night 2011]2022-03-29T19:41:28-05:00https://digital.library.unt.edu/ark:/67531/metadc1921124/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1921124/"><img alt="[SLR Scrabble Night 2011]" title="[SLR Scrabble Night 2011]" src="https://digital.library.unt.edu/ark:/67531/metadc1921124/thumbnail/"/></a></p><p>A flyer advertising the SLR Scrabble Night 2011 hosted by the Success for Life through Reading organization at the University of North Texas. The flyer lists costs of registration for individuals and teams attending the event.</p>Investigating the role of CheA-3 in Dusulfovibrio Vulgaris Hildenborough2017-10-14T08:36:47-05:00https://digital.library.unt.edu/ark:/67531/metadc1014526/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1014526/"><img alt="Investigating the role of CheA-3 in Dusulfovibrio Vulgaris Hildenborough" title="Investigating the role of CheA-3 in Dusulfovibrio Vulgaris Hildenborough" src="https://digital.library.unt.edu/ark:/67531/metadc1014526/thumbnail/"/></a></p><p>Multiple sets of chemotaxis genes including three cheA homologs were identified in the genome sequence of the anaerobic bacterium Desulfovibrio vulgaris Hildenborough. Each CheA is a histidine kinase (HK) and part of a two component signal transduction system. Knock out mutants in the three cheA genes were created using single cross-over homologous recombination insertion. We studied the phenotypes of the cheA mutants in detail and discovered that ?cheA-3 has a non swarming/swimming phenotype both in the soft agar plates and Palleroni chamber assays. CheA-3 shows similarity to the Shewanella oneidensis CheA-3 and the Vibrio cholerae CheA-2 that are responsible for chemotaxis in the respective organisms. We did not find any morphological or structural differences between the three Delta cheA mutants and the wild type cells in electron microscopy. Our results from these studies are presented.</p>Alternations of Structure and Functional Activity of Below Ground Microbial Communities at Elevated Atmospheric Carbon Dioxide2016-05-19T15:16:37-05:00https://digital.library.unt.edu/ark:/67531/metadc834443/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc834443/"><img alt="Alternations of Structure and Functional Activity of Below Ground Microbial Communities at Elevated Atmospheric Carbon Dioxide" title="Alternations of Structure and Functional Activity of Below Ground Microbial Communities at Elevated Atmospheric Carbon Dioxide" src="https://digital.library.unt.edu/ark:/67531/metadc834443/thumbnail/"/></a></p><p>The global atmospheric concentration of CO2 has increased by more than 30percent since the industrial revolution. Although the stimulating effects of elevated CO2 (eCO2) on plant growth and primary productivity have been well studied, its influences on belowground microbial communities are poorly understood and controversial. In this study, we showed a significant change in the structure and functional potential of soil microbial communities at eCO2 in a grassland ecosystem, the BioCON (Biodiversity, CO2 and Nitrogen) experimental site (http://www.biocon.umn.edu/) using a comprehensive functional gene array, GeoChip 3.0, which contains about 28,0000 probes and covers approximately 57,000 gene variants from 292 functional gene families involved in carbon, nitrogen, phosphorus and sulfur cycles as well as other functional processes. GeoChip data indicated that the functional structure of microbial communities was markedly different between ambient CO2 (aCO2) and eCO2 by detrended correspondence analysis (DCA) of all 5001 detected functional gene probes although no significant differences were detected in the overall microbial diversity. A further analysis of 1503 detected functional genes involved in C, N, P, and S cycles showed that a considerable portion (39percent) of them were only detected under either aCO2 (14percent) or eCO2 (25percent), indicating that the functional characteristics of the microbial community were significantly altered by eCO2. Also, for those shared genes (61percent) detected, some significantly (p<0.05) changed their abundance at eCO2. Especially, genes involved in labile C degradation, such as amyA, egl, and ara for starch, cellulose, and hemicelluloses, respectively, C fixation (e.g., rbcL, pcc/acc), N fixation (nifH), and phosphorus utilization (ppx) were significantly increased under eCO2, while those involved in decomposing recalcitrant C, such as glx, lip, and mnp for lignin degradation remained unchanged. This study provides insights into our understanding of belowground microbial communities and their feedbacks to terrestrial ecosystems at eCO2.</p>Effect of Increasing Nitrogen Deposition on Soil Microbial Communities2016-05-19T15:16:37-05:00https://digital.library.unt.edu/ark:/67531/metadc829364/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc829364/"><img alt="Effect of Increasing Nitrogen Deposition on Soil Microbial Communities" title="Effect of Increasing Nitrogen Deposition on Soil Microbial Communities" src="https://digital.library.unt.edu/ark:/67531/metadc829364/thumbnail/"/></a></p><p>Increasing nitrogen deposition, increasing atmospheric CO2, and decreasing biodiversity are three main environmental changes occurring on a global scale. The BioCON (Biodiversity, CO2, and Nitrogen) ecological experiment site at the University of Minnesota's Cedar Creek Ecosystem Science Reserve started in 1997, to better understand how these changes would affect soil systems. To understand how increasing nitrogen deposition affects the microbial community diversity, heterogeneity, and functional structure impact soil microbial communities, 12 samples were collected from the BioCON plots in which nitrogenous fertilizer was added to simulate the effect of increasing nitrogen deposition and 12 samples from without added fertilizer. DNA from the 24 samples was extracted using a freeze-grind protocol, amplified, labeled with a fluorescent dye, and then hybridized to GeoChip, a functional gene array containing probes for genes involved in N, S and C cycling, metal resistance and organic contaminant degradation. Detrended correspondence analysis (DCA) of all genes detected was performed to analyze microbial community patterns. The first two axes accounted for 23.5percent of the total variation. The samples fell into two major groups: fertilized and non-fertilized, suggesting that nitrogenous fertilizer had a significant impact on soil microbial community structure and diversity. The functional gene numbers detected in fertilized samples was less that detected in non-fertilizer samples. Functional genes involving in the N cycling were mainly discussed.</p>Effects of experimental warming and clipping on metabolic change of microbial community in a US Great Plains tallgrass prairie2017-10-14T08:36:47-05:00https://digital.library.unt.edu/ark:/67531/metadc1014989/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1014989/"><img alt="Effects of experimental warming and clipping on metabolic change of microbial community in a US Great Plains tallgrass prairie" title="Effects of experimental warming and clipping on metabolic change of microbial community in a US Great Plains tallgrass prairie" src="https://digital.library.unt.edu/ark:/67531/metadc1014989/thumbnail/"/></a></p><p>While more and more studies are being conducted on the effects of global warming, little is known regarding the response of metabolic change of whole soil microbial communities to this phenomenon. In this study, functional gene changes at the mRNA level were analyzed by our new developed GeoChip 3.0. Soil samples were taken from a long-term climate warming experiment site, which has been conducted for ~;;8 years at the Kessler Farm Field Laboratory, a 137.6-ha farm located in the Central Redbed Plains, in McClain County, Oklahoma. The experiment uses a paired factorial design with warming as the primary factor nested with clipping as a secondary factor. An infrared heater was used to simulate global warming, and clipping was used to mimic mowing hay. Twelve 2m x 2m plots were divided into six pairs of warmed and control plots. The heater generates a constant output of ~;;100 Watts m-2 to approximately 2 oC increase in soil temperature above the ambient plots, which is at the low range of the projected climate warming by IPCC. Soil whole microbial communities? mRNA was extracted, amplified, labeled and hybridized with our GeoChip 3.0, a functional gene array covering genes involved in N, C, P, and S cycling, metal resistance and contaminant degradation, to examine expressed genes. The results showed that a greater number and higher diversity of genes were expressed under warmed plots compared to control. Detrended correspondence analysis (DCA) of all detected genes showed that the soil microbial communities were clearly altered by warming, with or without clipping. The dissimilarity of the communities based on functional genes was tested and results showed that warming and control communities were significantly different (P<0.05), with or without clipping. Most genes involved in C, N, P and S cycling were expressed at higher levels in warming samples compared to control samples. All of the results demonstrated that the whole microbial communities increase functional gene expression under warming with or without clipping in order to adapt the changed out environment. More detail analysis is underway.</p>Functional Ecological Gene Networks to Reveal the Changes Among Microbial Interactions Under Elevated Carbon Dioxide Conditions2017-10-14T08:36:47-05:00https://digital.library.unt.edu/ark:/67531/metadc1012652/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1012652/"><img alt="Functional Ecological Gene Networks to Reveal the Changes Among Microbial Interactions Under Elevated Carbon Dioxide Conditions" title="Functional Ecological Gene Networks to Reveal the Changes Among Microbial Interactions Under Elevated Carbon Dioxide Conditions" src="https://digital.library.unt.edu/ark:/67531/metadc1012652/thumbnail/"/></a></p><p>Biodiversity and its responses to environmental changes is a central issue in ecology, and for society. Almost all microbial biodiversity researches focus on species richness and abundance but ignore the interactions among different microbial species/populations. However, determining the interactions and their relationships to environmental changes in microbial communities is a grand challenge, primarily due to the lack of information on the network structure among different microbial species/populations. Here, a novel random matrix theory (RMT)-based conceptual framework for identifying functional ecological gene networks (fEGNs) is developed with the high throughput functional gene array hybridization data from the grassland microbial communities in a long-term FACE (Free Air CO2 Enrichment) experiment. Both fEGNs under elevated CO2 (eCO2) and ambient CO2 (aCO2) possessed general characteristics of many complex systems such as scale-free, small-world, modular and hierarchical. However, the topological structure of the fEGNs is distinctly different between eCO2 and aCO2, suggesting that eCO2 dramatically altered the interactions among different microbial functional groups/populations. In addition, the changes in network structure were significantly correlated with soil carbon and nitrogen dynamics, and plant productivity, indicating the potential importance of network interactions in ecosystem functioning. Elucidating network interactions in microbial communities and their responses to environmental changes are fundamentally important for research in microbial ecology, systems microbiology, and global change.</p>HuMiChip: Development of a Functional Gene Array for the Study of Human Microbiomes2016-05-19T15:16:37-05:00https://digital.library.unt.edu/ark:/67531/metadc835015/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc835015/"><img alt="HuMiChip: Development of a Functional Gene Array for the Study of Human Microbiomes" title="HuMiChip: Development of a Functional Gene Array for the Study of Human Microbiomes" src="https://digital.library.unt.edu/ark:/67531/metadc835015/thumbnail/"/></a></p><p>Microbiomes play very important roles in terms of nutrition, health and disease by interacting with their hosts. Based on sequence data currently available in public domains, we have developed a functional gene array to monitor both organismal and functional gene profiles of normal microbiota in human and mouse hosts, and such an array is called human and mouse microbiota array, HMM-Chip. First, seed sequences were identified from KEGG databases, and used to construct a seed database (seedDB) containing 136 gene families in 19 metabolic pathways closely related to human and mouse microbiomes. Second, a mother database (motherDB) was constructed with 81 genomes of bacterial strains with 54 from gut and 27 from oral environments, and 16 metagenomes, and used for selection of genes and probe design. Gene prediction was performed by Glimmer3 for bacterial genomes, and by the Metagene program for metagenomes. In total, 228,240 and 801,599 genes were identified for bacterial genomes and metagenomes, respectively. Then the motherDB was searched against the seedDB using the HMMer program, and gene sequences in the motherDB that were highly homologous with seed sequences in the seedDB were used for probe design by the CommOligo software. Different degrees of specific probes, including gene-specific, inclusive and exclusive group-specific probes were selected. All candidate probes were checked against the motherDB and NCBI databases for specificity. Finally, 7,763 probes covering 91.2percent (12,601 out of 13,814) HMMer confirmed sequences from 75 bacterial genomes and 16 metagenomes were selected. This developed HMM-Chip is able to detect the diversity and abundance of functional genes, the gene expression of microbial communities, and potentially, the interactions of microorganisms and their hosts.</p>Identification of Small RNAs in Desulfovibrio vulgaris Hildenborough2017-10-14T08:36:47-05:00https://digital.library.unt.edu/ark:/67531/metadc1012624/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1012624/"><img alt="Identification of Small RNAs in Desulfovibrio vulgaris Hildenborough" title="Identification of Small RNAs in Desulfovibrio vulgaris Hildenborough" src="https://digital.library.unt.edu/ark:/67531/metadc1012624/thumbnail/"/></a></p><p>Desulfovibrio vulgaris is an anaerobic sulfate-reducing bacterium capable of facilitating the removal of toxic metals such as uranium from contaminated sites via reduction. As such, it is essential to understand the intricate regulatory cascades involved in how D. vulgaris and its relatives respond to stressors in such sites. One approach is the identification and analysis of small non-coding RNAs (sRNAs); molecules ranging in size from 20-200 nucleotides that predominantly affect gene regulation by binding to complementary mRNA in an anti-sense fashion and therefore provide an immediate regulatory response. To identify sRNAs in D. vulgaris, a bacterium that does not possess an annotated hfq gene, RNA was pooled from stationary and exponential phases, nitrate exposure, and biofilm conditions. The subsequent RNA was size fractionated, modified, and converted to cDNA for high throughput transcriptomic deep sequencing. A computational approach to identify sRNAs via the alignment of seven separate Desulfovibrio genomes was also performed. From the deep sequencing analysis, 2,296 reads between 20 and 250 nt were identified with expression above genome background. Analysis of those reads limited the number of candidates to ~;;87 intergenic, while ~;;140 appeared to be antisense to annotated open reading frames (ORFs). Further BLAST analysis of the intergenic candidates and other Desulfovibrio genomes indicated that eight candidates were likely portions of ORFs not previously annotated in the D. vulgaris genome. Comparison of the intergenic and antisense data sets to the bioinformatical predicted candidates, resulted in ~;;54 common candidates. Current approaches using Northern analysis and qRT-PCR are being used toverify expression of the candidates and to further develop the role these sRNAs play in D. vulgaris regulation.</p>Mapping the Two-component Regulatory Networks in Desulfovibrio vulgaris2017-10-14T08:36:47-05:00https://digital.library.unt.edu/ark:/67531/metadc1013270/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1013270/"><img alt="Mapping the Two-component Regulatory Networks in Desulfovibrio vulgaris" title="Mapping the Two-component Regulatory Networks in Desulfovibrio vulgaris" src="https://digital.library.unt.edu/ark:/67531/metadc1013270/thumbnail/"/></a></p><p>D. vulgaris Hildenborough has 72 response regulators. The Desulfovibrio are sulfate reducing bacteria that are important in the sulfur and carbon cycles in anoxic habitats. Its large number of two componenent systems are probably critical to its ability to sense and respond to its environment. Our goal is to map these RRs to the genes they regulate using a DNA-affinity-purification-chip (DAP-chip) protocol. First target determined usuing EMSA. A positive target was determined for as many RRs as possible using EMSA. Targets were selected based on gene proximity, regulon predictions and/or predicted sigma54 dependent promoters. qPCR was used to ensure that the target was enriched from sheared genomic DNA before proceeding to the DAP-chip.</p>Microarray-based analysis of survival of soil microbial community during ozonation2017-10-14T08:36:47-05:00https://digital.library.unt.edu/ark:/67531/metadc1015228/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1015228/"><img alt="Microarray-based analysis of survival of soil microbial community during ozonation" title="Microarray-based analysis of survival of soil microbial community during ozonation" src="https://digital.library.unt.edu/ark:/67531/metadc1015228/thumbnail/"/></a></p><p>A 15 h ozonation was performed on bioremediated soil to remove recalcitrant residual oil. To monitor the survival of indigenous microorganisms in the soil during in-situ chemical oxidation(ISCO) culturing and a functional genearray, GeoChip, was used to examine the functional genes and structure of the microbial community during ozonation (0h, 2h, 4h, 6h, 10hand15h). Breakthrough ozonation decreased the population of cultivable heterotrophic bacteria by about 3 orders of magnitude. The total functional gene abundance and diversity decreased during ozonation, as the number of functional genes was reduced by 48percent after 15 h. However, functional genes were evenly distributed during ozonation as judged by the Shannon-Weaver Evenness index. A sharp decrease in gene number was observed in the first 6 h of ozonation followed by a slower decrease in the next 9 h, which was consistent with microbial populations measured by a culture based method. Functional genes involved in carbon, nitrogen, phosphors and sulfur cycling, metal resistance and organic remediation were detected in all samples. Though the pattern of gene categories detected was similar for all time points, hierarchica lcluster of all functional genes and major functional categories all showed a time-serial pattern. Bacteria, archaea and fungi decreased by 96.1percent, 95.1percent and 91.3percent, respectively, after 15 h ozonation. Delta proteobacteria, which were reduced by 94.3percent, showed the highest resistance to ozonation while Actinobacteria, reduced by 96.3percent, showed the lowest resistance. Microorganisms similar to Rhodothermus, Obesumbacterium, Staphylothermus, Gluconobacter, and Enterococcus were dominant at all time points. Functional genes related to petroleum degradation decreased 1~;;2 orders of magnitude. Most of the key functional genes were still detected after ozonation, allowing a rapid recovery of the microbial community after ozonation. While ozone had a large impact on the indigenous soil microorganisms, a fraction of the key functional gene-containing microorganisms survived during ozonation and kept the community functional.</p>Phylogenetic Analysis of Shewanella Strains by DNA Relatedness Derived from Whole Genome Microarray DNA-DNA Hybridization and Comparison with Other Methods2017-10-14T08:36:47-05:00https://digital.library.unt.edu/ark:/67531/metadc1015185/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1015185/"><img alt="Phylogenetic Analysis of Shewanella Strains by DNA Relatedness Derived from Whole Genome Microarray DNA-DNA Hybridization and Comparison with Other Methods" title="Phylogenetic Analysis of Shewanella Strains by DNA Relatedness Derived from Whole Genome Microarray DNA-DNA Hybridization and Comparison with Other Methods" src="https://digital.library.unt.edu/ark:/67531/metadc1015185/thumbnail/"/></a></p><p>Phylogenetic analyses were done for the Shewanella strains isolated from Baltic Sea (38 strains), US DOE Hanford Uranium bioremediation site [Hanford Reach of the Columbia River (HRCR), 11 strains], Pacific Ocean and Hawaiian sediments (8 strains), and strains from other resources (16 strains) with three out group strains, Rhodopseudomonas palustris, Clostridium cellulolyticum, and Thermoanaerobacter ethanolicus X514, using DNA relatedness derived from WCGA-based DNA-DNA hybridizations, sequence similarities of 16S rRNA gene and gyrB gene, and sequence similarities of 6 loci of Shewanella genome selected from a shared gene list of the Shewanella strains with whole genome sequenced based on the average nucleotide identity of them (ANI). The phylogenetic trees based on 16S rRNA and gyrB gene sequences, and DNA relatedness derived from WCGA hybridizations of the tested Shewanella strains share exactly the same sub-clusters with very few exceptions, in which the strains were basically grouped by species. However, the phylogenetic analysis based on DNA relatedness derived from WCGA hybridizations dramatically increased the differentiation resolution at species and strains level within Shewanella genus. When the tree based on DNA relatedness derived from WCGA hybridizations was compared to the tree based on the combined sequences of the selected functional genes (6 loci), we found that the resolutions of both methods are similar, but the clustering of the tree based on DNA relatedness derived from WMGA hybridizations was clearer. These results indicate that WCGA-based DNA-DNA hybridization is an idea alternative of conventional DNA-DNA hybridization methods and it is superior to the phylogenetics methods based on sequence similarities of single genes. Detailed analysis is being performed for the re-classification of the strains examined.</p>The Role of the Tetraheme Cytochrome c3 in Desulfovibrio vulgaris Hildenborough Metabolism2017-10-14T08:36:47-05:00https://digital.library.unt.edu/ark:/67531/metadc1014507/<p><a href="https://digital.library.unt.edu/ark:/67531/metadc1014507/"><img alt="The Role of the Tetraheme Cytochrome c3 in Desulfovibrio vulgaris Hildenborough Metabolism" title="The Role of the Tetraheme Cytochrome c3 in Desulfovibrio vulgaris Hildenborough Metabolism" src="https://digital.library.unt.edu/ark:/67531/metadc1014507/thumbnail/"/></a></p><p>The role of tetraheme cytochrome c3 (CycA) in the metabolism of the sulfate-reducing bacterium Desulfovibrio vulgaris Hildenborough (DvH) was investigated by deletion of the cycA gene using a marker-exchange deletion strategy. A highly abundant periplasmic cytochrome, CycA has the important function of transferring electrons from periplasmic hydrogenases (Hyd, Hyn, Hys) to transmembrane complexes which transport the electrons to the cytoplasm where sulfate is reduced. Previous studies have indicated that during its interaction with periplasmic hydrogenases, CycA is also involved in the reduction of toxic metals. Growth of the cycA mutant strain on lactate as the electron donor and sulfate as the terminal electron acceptor showed that, despite its abundance, CycA is not essential for DvH growth. However, the rate of growth of the mutant strain was significantly lower, and the extent of growth less, than rates and extents of growth of the wild type and complement strains on lactate/sulfate medium. This indicates that a portion of the electrons generated from cytoplasmic lactate oxidation are transported by CycA for energy production, possibly in a hydrogen cycling mechanism employed to generate ATP. Failure of the mutant strain to grow on either formate or H2, with sulfate or sulfite as electron acceptors, further indicated that CycA may be the only redox partner of periplasmic hydrogenases. The cycA mutant strain also did not grow as well as either the wild type or complement strains on medium supplemented with pyruvate/sulfate. Final growth on pyruvate/sulfate was comparable, but the mutant grew more slowly than the wild type and complement strains. Interestingly, the mutant grew better than the wild type or complement strains on pyruvate alone, possibly due to the release of H2 and/or CO2 in concentrations which may be somewhat inhibitory to wild type growth.</p>