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Articles 1 - 30 of 1312
Full-Text Articles in Entire DC Network
A Cultured Greigite-Producing Magnetotactic Bacterium In A Novel Group Of Sulfate-Reducing Bacteria, Christopher T. Lefèvre, Nicholas Menguy, Fernanda Abreu, Ulysses Lins, Mihály Pósfai, Tanya Prozorov, David Pignol, Richard B. Frankel, Dennis A. Bazylinski
A Cultured Greigite-Producing Magnetotactic Bacterium In A Novel Group Of Sulfate-Reducing Bacteria, Christopher T. Lefèvre, Nicholas Menguy, Fernanda Abreu, Ulysses Lins, Mihály Pósfai, Tanya Prozorov, David Pignol, Richard B. Frankel, Dennis A. Bazylinski
Physics
Magnetotactic bacteria contain magnetosomes—intracellular, membrane-bounded, magnetic nanocrystals of magnetite (Fe3O4) or greigite (Fe3S4)—that cause the bacteria to swim along geomagnetic field lines. We isolated a greigite-producing magnetotactic bacterium from a brackish spring in Death Valley National Park, California, USA, strain BW-1, that is able to biomineralize greigite and magnetite depending on culture conditions. A phylogenetic comparison of BW-1 and similar uncultured greigite- and/or magnetite-producing magnetotactic bacteria from freshwater to hypersaline habitats shows that these organisms represent a previously unknown group of sulfate-reducing bacteria in the Deltaproteobacteria. Genomic analysis of BW-1 reveals …
Cal Poly Professor, Colleagues Discover New Magnetic Bacterium, Public Affairs Office
Cal Poly Professor, Colleagues Discover New Magnetic Bacterium, Public Affairs Office
Press Releases
No abstract provided.
Why Animal Ethics Committees Don't Work, Denise Russell
Why Animal Ethics Committees Don't Work, Denise Russell
Between the Species
Abstract
Animal ethics committees have been set up in many countries as a way to scrutinize animal experimentation and to assure the public that if animals are used in research then it is for a worthwhile cause and suffering is kept to a minimum. The ideals of Refinement, Reduction and Replacement are commonly upheld. However while refinement and reduction receive much attention in animal ethics committees the replacement of animals is much more difficult to incorporate into the committees’ deliberations. At least in Australia there are certain structural reasons for this but it is likely that most of the reasons …
Cal Poly Campuses Collaborate On Aerial Robotics Research, Public Affairs Office
Cal Poly Campuses Collaborate On Aerial Robotics Research, Public Affairs Office
Press Releases
No abstract provided.
Cal Poly Helps Promote Aspiring Female Computer Scientists, Public Affairs Office
Cal Poly Helps Promote Aspiring Female Computer Scientists, Public Affairs Office
Press Releases
No abstract provided.
Pg&E Grant Provides Audio-Video Equipment For Cal Poly Journalism Department, Public Affairs Office
Pg&E Grant Provides Audio-Video Equipment For Cal Poly Journalism Department, Public Affairs Office
Press Releases
No abstract provided.
Veritas Observations Of Gamma-Ray Bursts Detected By Swift, V. A. Acciari, E. Aliu, T. Arlen, T. Aune, M. Beilicke, W. Benbow, S. M. Bradbury, J. H. Buckley, V. Bugaev, K. Byrum, A. Cannon, A. Cesarini, J. L. Christiansen, L. Ciupik, E. Collins-Hughes, M. P. Connolly, W. Cui, C. Duke, M. Errando, A. Falcone, J. P. Finley, G. Finnegan, L. Fortson, A. Furniss, N. Galante, D. Gall, S. Godambe, S. Griffin, J. Grube, R. Guenette, G. Gyuk, D. Hanna, J. Holder, G. Hughes, C. M. Hui, T. B. Humensky, D. J. Jackson, P. Kaaret, N. Karlsson, M. Kertzman, D. Kieda, H. Krawczynski, F. Krennrich, M. J. Lang, A. S. Madhavan, G. Maier, S. Mcarthur, A. Mccann, P. Moriarty, M. D. Newbold, R. A. Ong, M. Orr, A. N. Otte, N. Park, J. S. Perkins, M. Pohl, H. Prokoph, J. Quinn, K. Ragan, L. C. Reyes, P. T. Reynolds, E. Roache, H. J. Rose, J. Ruppel, D. B. Saxon, M. Schroedter, G. H. Sembroski, G. D. Şentürk, A. W. Smith, D. Staszak, S. P. Swordy, G. Tešić, M. Theiling, S. Thibadeau, K. Tsurusaki, A. Varlotta, V. V. Vassiliev, S. Vincent, M. Vivier, S. P. Wakely, J. E. Ward, T. C. Weekes, A. Weinstein, T. Weisgarber, D. A. Williams, M. Wood
Veritas Observations Of Gamma-Ray Bursts Detected By Swift, V. A. Acciari, E. Aliu, T. Arlen, T. Aune, M. Beilicke, W. Benbow, S. M. Bradbury, J. H. Buckley, V. Bugaev, K. Byrum, A. Cannon, A. Cesarini, J. L. Christiansen, L. Ciupik, E. Collins-Hughes, M. P. Connolly, W. Cui, C. Duke, M. Errando, A. Falcone, J. P. Finley, G. Finnegan, L. Fortson, A. Furniss, N. Galante, D. Gall, S. Godambe, S. Griffin, J. Grube, R. Guenette, G. Gyuk, D. Hanna, J. Holder, G. Hughes, C. M. Hui, T. B. Humensky, D. J. Jackson, P. Kaaret, N. Karlsson, M. Kertzman, D. Kieda, H. Krawczynski, F. Krennrich, M. J. Lang, A. S. Madhavan, G. Maier, S. Mcarthur, A. Mccann, P. Moriarty, M. D. Newbold, R. A. Ong, M. Orr, A. N. Otte, N. Park, J. S. Perkins, M. Pohl, H. Prokoph, J. Quinn, K. Ragan, L. C. Reyes, P. T. Reynolds, E. Roache, H. J. Rose, J. Ruppel, D. B. Saxon, M. Schroedter, G. H. Sembroski, G. D. Şentürk, A. W. Smith, D. Staszak, S. P. Swordy, G. Tešić, M. Theiling, S. Thibadeau, K. Tsurusaki, A. Varlotta, V. V. Vassiliev, S. Vincent, M. Vivier, S. P. Wakely, J. E. Ward, T. C. Weekes, A. Weinstein, T. Weisgarber, D. A. Williams, M. Wood
Physics
We present the results of 16 Swift-triggered Gamma-ray burst (GRB) follow-up observations taken with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) telescope array from 2007 January to 2009 June. The median energy threshold and response time of these observations were 260 GeV and 320 s, respectively. Observations had an average duration of 90 minutes. Each burst is analyzed independently in two modes: over the whole duration of the observations and again over a shorter timescale determined by the maximum VERITAS sensitivity to a burst with a t−1.5 time profile. This temporal model is characteristic of GRB …
The Lick Agn Monitoring Project 2011: Reverberation Mapping Of Markarian 50, Aaron J. Barth, Anna Pancoast, Shawn J. Thorman, Vardha N. Bennert, David J. Sand, Weidong Li, Gabriela Canalizo, Alexei V. Filippenko, Elinor L. Gates, Jenny E. Greene, Matthew A. Malkan, Daniel Stern, Tommaso Treu, Jong-Hak Woo, Roberto J. Assef, Hyun-Jin Bae, Brendon J. Brewer, Tabitha Buehler, S. Bradley Cenko, Kelsey I. Clubb, Michael C. Cooper, Aleksandar M. Diamond-Stanic, Kyle D. Hiner, Sebastian F. Hönig, Michael D. Joner, Michael T. Kandrashoff, C. David Laney, Mariana S. Lazarova, A. M. Nierenberg, Dawoo Park, Jeffrey M. Silverman, Donghoon Son, Alessandro Sonnenfeld, Erik J. Tollerud, Jonelle L. Walsh, Richard Walters, Robert L. Da Silva, Michele Fumagalli, Michael D. Gregg, Chelsea E. Harris, Eric Y. Hsiao, Jeffrey Lee, Liliana Lopez, Jacob Rex, Nao Suzuki, Jonathan R. Trump, David Tytler, Gábor Worseck, Hassan M. Yesuf
The Lick Agn Monitoring Project 2011: Reverberation Mapping Of Markarian 50, Aaron J. Barth, Anna Pancoast, Shawn J. Thorman, Vardha N. Bennert, David J. Sand, Weidong Li, Gabriela Canalizo, Alexei V. Filippenko, Elinor L. Gates, Jenny E. Greene, Matthew A. Malkan, Daniel Stern, Tommaso Treu, Jong-Hak Woo, Roberto J. Assef, Hyun-Jin Bae, Brendon J. Brewer, Tabitha Buehler, S. Bradley Cenko, Kelsey I. Clubb, Michael C. Cooper, Aleksandar M. Diamond-Stanic, Kyle D. Hiner, Sebastian F. Hönig, Michael D. Joner, Michael T. Kandrashoff, C. David Laney, Mariana S. Lazarova, A. M. Nierenberg, Dawoo Park, Jeffrey M. Silverman, Donghoon Son, Alessandro Sonnenfeld, Erik J. Tollerud, Jonelle L. Walsh, Richard Walters, Robert L. Da Silva, Michele Fumagalli, Michael D. Gregg, Chelsea E. Harris, Eric Y. Hsiao, Jeffrey Lee, Liliana Lopez, Jacob Rex, Nao Suzuki, Jonathan R. Trump, David Tytler, Gábor Worseck, Hassan M. Yesuf
Physics
The Lick AGN Monitoring Project 2011 observing campaign was carried out over the course of 11 weeks in spring 2011. Here we present the first results from this program, a measurement of the broad-line reverberation lag in the Seyfert 1 galaxy Mrk 50. Combining our data with supplemental observations obtained prior to the start of the main observing campaign, our data set covers a total duration of 4.5 months. During this time, Mrk 50 was highly variable, exhibiting a maximum variability amplitude of a factor of ~4 in the U-band continuum and a factor of ~2 in the Hβ …
Cal Poly Fall 2011 Commencement Set For Dec. 10, Public Affairs Office
Cal Poly Fall 2011 Commencement Set For Dec. 10, Public Affairs Office
Press Releases
No abstract provided.
Cal Poly Study Aims To Curb Pregnancy Weight Gain And Danger In Obese Mothers-To-Be, Public Affairs Office
Cal Poly Study Aims To Curb Pregnancy Weight Gain And Danger In Obese Mothers-To-Be, Public Affairs Office
Press Releases
No abstract provided.
December 7, 2011 Cal Poly Report, Public Affairs Office
December 7, 2011 Cal Poly Report, Public Affairs Office
Cal Poly Report
No abstract provided.
Telling It Like It Is: A Proposal To Improve Transparency In Biomedical Research, John Hadley
Telling It Like It Is: A Proposal To Improve Transparency In Biomedical Research, John Hadley
Between the Species
Recent proposals to improve public communication about animal-based biomedical research have been narrowly focused on reforming biomedical journal submission guidelines. My suggestion for communication reform is broader in scope reaching beyond the research community to healthcare communicators and ultimately the general public. The suggestion is for researchers to provide journalists and public relations practitioners with concise summaries of their ‘animal use data’. Animal use data is collected by researchers and intended for the public record but is rarely, if ever, given significant media exposure. By providing healthcare communicators with specific details about their animal use, researchers can play a role …
Ap French Language And Culture: Strategizing For Success, Brian G. Kennelly
Ap French Language And Culture: Strategizing For Success, Brian G. Kennelly
World Languages and Cultures
No abstract provided.
Cplop - Cal Poly's Library Of Pyroprints, Kevin Webb
Cplop - Cal Poly's Library Of Pyroprints, Kevin Webb
Computer Engineering
California Polytechnic Library of Pyroprints, CPLOP, is a web driven data-base application that stores data from the biology’s departments E. coli Pyrosequencing project. Some of this data was stored in Excel datasheets, while data from the pyrosequencing machines was stored as just a list of random .xml files. There was no useful way to organize and store the massive amounts of data from multiple file sources in one location, nor to perform the complicated searches and comparisons that the project requires. CPLOP’s primary goal is to store such data in three organized tables that relate to one another. It was …
Maternal Smoking During Pregnancy And Risk Factors For Cardiovascular Disease In Adulthood, Bernardo Lessa Horta, Denise P. Gigante, Aydin Nazmi, Vera Maria F. Silveira, Isabel Oliveira, Cesar G. Victora
Maternal Smoking During Pregnancy And Risk Factors For Cardiovascular Disease In Adulthood, Bernardo Lessa Horta, Denise P. Gigante, Aydin Nazmi, Vera Maria F. Silveira, Isabel Oliveira, Cesar G. Victora
Food Science and Nutrition
Objective: This study was aimed at assessing the effect of maternal smoking during pregnancy on metabolic cardiovascular risk factors in early adulthood in a Brazilian birth cohort, after controlling for possible confounding variables and health behaviors in early adulthood.
Methods: In 1982, the maternity hospitals in Pelotas, southern Brazil, were visited and all births were identified. Those livebirths whose family lived in the urban area of the city were studied prospectively. In 2004–2005, we attempted to follow the whole cohort, the subjects were interviewed, examined and blood sample was collected. The following outcomes were studied: blood pressure; HDL cholesterol; triglycerides; …
How To Control Texture In Cultured Dairy, Phillip S. Tong
How To Control Texture In Cultured Dairy, Phillip S. Tong
Dairy Science
No abstract provided.
Cal Poly Creamery Recalls Eggnog, Public Affairs Office
Cal Poly Creamery Recalls Eggnog, Public Affairs Office
Press Releases
No abstract provided.
Requirements Specification For Dsic: Distribution System For Information And Collaboration, Alex Abrahamian
Requirements Specification For Dsic: Distribution System For Information And Collaboration, Alex Abrahamian
Computer Science and Software Engineering
There seems to exist an invisible barrier between people that should be connected but for whatever reasons (don't hang out in the same circles, don't go to the same meetings, or are geographically separated) haven't met each other yet.
Normally these people will only meet when others bring them together or they are thrown together on a project. DSIC aims to preempt the person discovery process by allowing a way for people to post ideas, events, and other collaborations in a single place that can then be searched by other users.
The system utilizes postings, user profiles, and a tagging …
Local Marketing: The Benefits And Drawbacks For Large Corporations With Respect To National Food Chains, Marisa Erin Bloch
Local Marketing: The Benefits And Drawbacks For Large Corporations With Respect To National Food Chains, Marisa Erin Bloch
Journalism
A majority of large corporations, with a special focus on national food chains, put all of their marketing on national and international levels. Most corporations tend to forget about the local aspect of business. The newsletter for California Pizza Kitchen San Luis Obispo was created in order to go against the normal ways of these large restaurant chains, in an attempt to reach out to the community. This paper addresses the need for large corporations, with respect to national food chains, to bring things to a local level. The focus of marketing on a local level is constantly overlooked because …
Animals-As-Patients: Improving The Practice Of Animal Experimentation, Jane Johnson, Christopher Degeling
Animals-As-Patients: Improving The Practice Of Animal Experimentation, Jane Johnson, Christopher Degeling
Between the Species
In this paper we propose a new way of conceptualizing animals in experimentation – the animal-as-patient. Construing and treating animals as patients offers a way of successfully addressing some of the entrenched epistemological and ethical problems within a practice of animal experimentation directed to human clinical benefit. This approach is grounded in an epistemological insight and builds on work with so-called ‘pet models’. It relies upon the occurrence and characterization of analogous human and nonhuman animal diseases, where, if certain criteria of homology and mechanism are met, the animal simultaneously becomes a patient and a spontaneous model of the human …
Review Of Package Warning Labels And Their Effect On Consumer Behaviour With Insights To Future Anticounterfeit Strategy Of Label And Communication Systems, John Spink, Jay Singh, S. Paul Singh
Review Of Package Warning Labels And Their Effect On Consumer Behaviour With Insights To Future Anticounterfeit Strategy Of Label And Communication Systems, John Spink, Jay Singh, S. Paul Singh
Industrial Technology and Packaging
This paper investigates and reviews literature regarding a range of topics important to the research question – the themes apply across all the topics. The topics include label and package warnings, including tamperevident features, to review their effect on the consumer behaviour of changing usage or purchase decisions. This information was then applied to gain insight into anticounterfeit product/package efforts. Based on this research, it appears that there is value for brand marketers to enhance their anticounterfeit efforts and consumer confidence by utilizing warning labels and information labels on their labels or packages. Currently, consumer perception of a domestic counterfeit …
Bell's Spaceships Problem And The Foundations Of Special Relativity, Francisco Fernflores
Bell's Spaceships Problem And The Foundations Of Special Relativity, Francisco Fernflores
Philosophy
Recent ‘dynamical’ approaches to relativity by Harvey Brown and his colleagues have used John Bell’s own solution to a problem in relativity which has in the past sometimes been called ‘Bell’s spaceships paradox’, in a central way. This paper examines solutions to this problem in greater detail and from a broader philosophical perspective than Brown et al. offer. It also analyses the well-known analogy between special relativity and classical thermodynamics. This analysis leads to the sceptical conclusion that Bell’s solution yields neither new philosophical insights concerning the foundations of relativity nor differential support for a specific view concerning the existence …
Brody-Bertalanffy Growth Curves From Tag And Recapture Studies On Cabezon (Scorpaenichthys Marmoratus) And Gopher Rockfish (Sebastes Carnatus) Of The Central Coast, Christie Yorke
Biological Sciences
No abstract provided.
The Sources Of Heat Generation In Vibrothermography, Jeremy Renshaw, John Chen, Stephen Holland, R. Bruce Thompson
The Sources Of Heat Generation In Vibrothermography, Jeremy Renshaw, John Chen, Stephen Holland, R. Bruce Thompson
Mechanical Engineering
Vibrothermography, or sonic IR, is a nondestructive evaluation technique used to find surface and near surface defects—such as cracks and delaminations—through observations of vibration-induced heat generation. This method has significant interest as an industrial inspection method, however, a lack of understanding of the fundamental physics governing the heat generation process has limited its application despite extensive theoretical, numerical simulation, and experimental work. Significant theoretical and numerical simulation work has been performed, but has yet to be rigorously verified experimentally. This paper presents experimental verification of the sources of heat generation in vibrothermography; specifically friction, plasticity, and viscoelasticity. Specific experimental evidence …
Synthesis Of An Antimicrobial Textile Coating, William M. Morris
Synthesis Of An Antimicrobial Textile Coating, William M. Morris
Chemistry and Biochemistry
A titania nanosol was synthesized and coated onto nylon/cotton blended textile substrates. The substrates were characterized via SEM for adhesion and nanoparticle formation, then subjected to antimicrobial efficacy tests. The titania nanosol was successfully coated on to textiles samples. Particles were observed to be around 2 by 3 micrometers and formed between the interstitial space of textile fibers. Although larger than typical nanoparticles, the coatings exhibited what seemed to be antimicrobial activity. Titania nanosol coated textile samples were subjected to Kirby Bauer Assay in the presence of S. aureus. The coated textile sample exhibited an inhibition of growth around its …
Factors Affecting Passive Transfer In Neonatal Calves, Kristin Marie Mendonsa
Factors Affecting Passive Transfer In Neonatal Calves, Kristin Marie Mendonsa
Dairy Science
No abstract provided.
Uses Of Genomic Predictions In Commercial Beef Cattle Operations, Matt Miller
Uses Of Genomic Predictions In Commercial Beef Cattle Operations, Matt Miller
Dairy Science
This paper aimed to achieve two different objectives. The first objective of this study was to identify and explain the genetic gain achieved in commercial beef cattle operations with the use of genomic predictions versus the use of visual appraisal and EPDs. The second goal of this paper was to develop a method to easily explain genomic predictions and their practical applications on commercial beef operations to a lay audience, specifically to ranchers. In order to accomplish these objectives, I evaluated three of the most common selection methods used by producers today. These included visual appraisal, expected progeny differences (EPDs), …
The Effect Of Amylase Supplementation With Low-Starch Rations: Effects On Milk Production And Feed Consumption, Alfred Eaton
The Effect Of Amylase Supplementation With Low-Starch Rations: Effects On Milk Production And Feed Consumption, Alfred Eaton
Dairy Science
The objective of this trial was to determine if there was an increase in milk production or a decrease in feed consumption by dairy cattle when fed an exogenous rumen-resistant amylase, named RumiStar. High feed prices have caused dairymen to look for new ways to be more efficient. Commercial feed additives have been proposed as opportunities to improve efficiency. In our study a minimum of eighty multiparous Holstein cows were assigned to each of two pens, with a minimum of forty cows in each. Cows that completed their lactation during the study period were replaced with fresh cows to keep …
Activity And Rumination Monitoring For Calving Times, David Weststeyn
Activity And Rumination Monitoring For Calving Times, David Weststeyn
Dairy Science
No abstract provided.
Moisture Migration In Jalapeno Jelly Layered Cheve Cheese, Amanda Heath
Moisture Migration In Jalapeno Jelly Layered Cheve Cheese, Amanda Heath
Dairy Science
No abstract provided.