1,722,168 research outputs found
Microbial Community Structure and its Relationship to Gut Health in Poultry
Full text linkJohnson, Timothy. (2013). Microbial Community Structure and its Relationship to Gut Health in Poultry. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/204384
2020 National Survey of Scientists and Engineers on COVID-19
No full textThis is a random probability sample survey of academic scientists conducted online in this U.S. from May 7-28, 2020 to understand the impacts of COVID-19 on the science community. The final sample consisted of 362 completed questionnaires and a final AAPOR response rate of 20.9%. The survey was conducted by the Center for Science, Technology and Environmental Policy Studies at Arizona State University. The survey instrument examined questions regarding how COVID-19 and related policies impact academic research, funding issues related to COVID-19 science communication, and regulation of COVID-19 research. The survey also collected data on individual background and perceptions of impacts, behavior and expectations due to COVID-19. The population for the survey included non-tenure track, tenured, and tenure-track academic scientists who hold the doctoral degree from three subfields (biology, civil and environmental engineering, and biochemistry) at 20 randomly selected universities classified as Carnegie designated research extensive (R1) universities in the United States.
The sample was designed with the following protocol. We identified all R1 Carnegie classified research intensive institutions (131 total) using the most recent Carnegie listings. We then stratified the institutions by eight Carnegie region classifications. Because the eight regions vary in size, a proportionate distribution from each region was randomly selected, ensuring that selected universities within each region represented multiple states. For each selected university, we developed a list of all tenure and tenure track faculty and non-tenure track faculty in biology, civil engineering, environmental engineering, biochemistry and genomics. The final sample was randomly selected from these faculty lists. The completed sample was weighted by gender and academic field to represent the population as closely as possible. A conservative measure of sampling error for questions answered by the full sample is plus or minus 5 percentage points.
The survey was approved by Institutional Review Boards at Arizona State University and at the University of Illinois at Chicago
Relationships between cecum, ileum and litter bacterial microbiomes in a commercial turkey flock, and the impact of penicillin treatment on early bacterial community establishment
No full text16S amplicon data for the V1 hypervariable region from a study of growth promoting antibiotics in commercial turkeys. Included are trimmed and quality filtered data, OTU biom files, and rep fasta files.Gut health is paramount for commercial poultry production, and methods to assess gut health are critically needed to better understand how the avian gastrointestinal tract matures over time. One important aspect of gut health is the totality of bacterial populations inhabiting different sites of the avian gastrointestinal tract, and associations of these populations with the poultry farm environment, since these bacteria are thought to drive metabolism and prime the host immune system. In this study, a single flock of commercial turkeys was followed over the course of twelve weeks to examine bacterial microbiome inhabiting the ceca, ileum, and corresponding poultry litter. Furthermore, the effects of low-dose, growth-promoting penicillin treatment (50 g/ton) in feed on the ileum bacterial microbiome were also examined during the early brood period. The cecum and ileum bacterial communities of birds shifted independently but in parallel to one another over time, with distinct bacterial populations harboring each site. Corresponding poultry litter more closely represented the ileal bacterial populations than cecal bacterial populations, and also changed parallel to ileum bacterial populations over time. Penicillin applied at low doses in feed significantly enhanced early weight gain in commercial poults, and this correlated with predictable shifts in the ileum bacterial populations in control versus treatment groups. Overall, this study demonstrates the dynamic shifts in the turkey gastrointestinal microbiome during development, the correlations between bacterial populations in the gastrointestinal tract and the litter environment, and the impact of low-dose penicillin on the modulation of bacterial communities in the ileum. Alternatives to low-dose antibiotics would benefit by mimicking these effects in the gut, among others.Danzeisen, Jessica; Clayton, Jonathan; Huang, Hu; Knights, Dan; McComb, Brian; Hayer, Shivdeep; Johnson, Timothy. (2015). Relationships between cecum, ileum and litter bacterial microbiomes in a commercial turkey flock, and the impact of penicillin treatment on early bacterial community establishment. Retrieved from the University Digital Conservancy, http://dx.doi.org/10.13020/D67G6P
The Misadventures of Sherlock Holmes: An Exhibition of Items from the Sherlock Holmes Collections
No full textEssay and exhibition checklist for The Misadventures of Sherlock Holmes, an exhibition displayed by the University Libraries in the Elmer L. Andersen Library Gallery from June 13 to September 30, 2016.Johnson, Timothy J. (2016). The Misadventures of Sherlock Holmes: An Exhibition of Items from the Sherlock Holmes Collections. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/199863
Friends of the Sherlock Holmes Collections Newsletter, 2015, Vol 19, No. 3
No full textQuarterly newsletter of the Friends of the Sherlock Holmes Collections at the University of Minnesota Libraries. This issue includes articles on Vincent Starrett and his collection; a book of poetry by Arthur Guiterman about Conan Doyle; author Irving Jaffee; and curatorial activities.Betzner, Ray; McKuras, Julie; Sveum, Richard J; Johnson, Timothy J; Klinger, Leslie S. (2015). Friends of the Sherlock Holmes Collections Newsletter, 2015, Vol 19, No. 3. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/200071
Friends of the Sherlock Holmes Collections Newsletter, 2015, Vol 19, No. 2
No full textQuarterly newsletter of the Friends of the Sherlock Holmes Collections. This issue features stories on the Japan Sherlock Holmes Club, author Carolyn Wells, Great Detective Stories About Doctors, a visit to southeast Minnesota, a KFAI radio report on the Collections, and an April Fool's prank.Higorashi, Masamichi; McKuras, Julie; Sveum, Richard J; Johnson, Timothy J; Thaden, Gary. (2015). Friends of the Sherlock Holmes Collections Newsletter, 2015, Vol 19, No. 2. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/200041
A Holmes and Doyle Bibliography, Volume 6: Periodical Articles, Subject Listing, By De Waal Category
Full text linkThis bibliography is a work in progress. It attempts to update Ronald B. De Waal’s comprehensive bibliography, The Universal Sherlock Holmes, but does not claim to be exhaustive in content. New works are continually discovered and added to this bibliography. Readers and researchers are invited to suggest additional content. Volume 6 presents the periodical literature arranged by subject categories (as originally devised for the De Waal bibliography and slightly modified here).Johnson, Timothy J. (2018). A Holmes and Doyle Bibliography, Volume 6: Periodical Articles, Subject Listing, By De Waal Category. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/200351
Dark Places, Wicked Companions and Strange Experiences: A Companion Essay to the Exhibit
Full text linkA companion essay to the exhibition "Dark Places, Wicked Companions and Strange Experiences" from the Sherlock Holmes Collections of the University of Minnesota Libraries. The exhibition is primarily Sherlockian artwork from the John Bennett Shaw Collection and from the Philip S. and Mary Kahler Hench Collection. The exhibit was on display from July 8 through October 25, 2019.Johnson, Timothy J. (2019). Dark Places, Wicked Companions and Strange Experiences: A Companion Essay to the Exhibit. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/205174
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