Browsing by Subject "biology"
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Item 2004 Texas 303(d) List (May 13, 2005)(Texas Commission on Environmental Quality, 2005) Texas Commission on Environmental QualityItem 2004 Texas Water Quality Inventory(Texas Commission on Environmental Quality, 2004) Texas Commission on Environmental QualityItem 2006 Texas 303(d) List (June 27, 2007)(Texas Commission on Environmental Quality, 2007) Texas Commission on Environmental QualityItem 2008 Texas 303(d) List (March 19, 2008)(Texas Commission on Environmental Quality, 2008) Texas Commission on Environmental QualityItem 2010 Texas Integrated Report - Texas 303(d) List (Category 5)(Texas Commission on Environmental Quality, 2010) Texas Commission on Environmental QualityItem 2010 Texas Water Quality Inventory: Assessment Results for Basin 14 - Colorado River(Texas Commission on Environmental Quality, 2010) Texas Commission on Environmental QualityItem 2013 Waller Creek Watershed Summary Sheet(City of Austin, 2015) Clamann, Andrew; Jackson, Todd; Clayton, Rob; Richter, AaronItem A Biography of Waller Creek, A Case Study in Urbanization and Environment(The University of Colorado at Boulder, 1995) Foote, Kenneth E.; Molch, Katrin, E.Item A Survey of the Aquatic Macrobenthos of Waller Creek(City of Austin, 1992) Ziser, Stephen W.Item The Alumna: Hayley Gillespie, PhD, 2011(The Texas Scientist, 2016) The Texas ScientistItem An American Cerapachys, with Remarks on the Affinities of the Cerapachyinae(The University of Chicago Press, 1902) Wheeler, William MortonItem Application of an electronic analog computer to the evaluation of the effects of urbanization on the runoff characteristics of small watersheds(1968) Narayana, V.V.D.; Riley, J.P.In the synthesis of hydrograph characteristics of small urban watersheds, the distribution of the water among the various phases of the runoff process is attempted by the concept of "Equivalent Rural Watershed". The criteria for transforming the urban watershed into an equivalent rural watershed requires that, for a given input into both the models (urban and its equivalent rural watershed), the outputs must be identical. The hydrograph of outflow from an urban watershed is obtained by chronologically deducting the losses due to interception, infiltration and depression storage from precipitation on the equivalent rural watershed and then routing it through the surface and channel storages. This procedure of computing the synthetic outflow hydrograph is accomplished with the analog computer at the Utah Water Research Laboratory, Utah State University at Logan. Testing and verification is done with rainfall and runoff data from the Waller Creek watershed at Austin, Texas. In the verification process, coefficients representing interception, depression storage, and infiltration are determined by trial and error so that the simulated hydrograph is nearly identical to the measured hydrograph of the prototype. The variation in the values of these coefficients from year to year is assumed to be due to the corresponding variations in the characteristics of urbanization defined by the percentage impervious cover and the characteristic impervious length (ratio of the mean length of travel between the center of the impervious area and the discharge measuring point to the maximum length of travel on the watershed). This study attempted to develop the relation between these coefficients and the urbanization parameters.Item Austin SWAT Modeling(City of Austin Watershed Protection Department, 2013) Glick, RogerItem Biology in the High School(University of Texas at Austin, 1913-10-15) Hartman, Carl; Lewis, I.M.Item Causal Analysis of a Migration of the Snout Butterfly, Libytheana bachmanii Iarvata (Strecker) (Libytheidae)(Yale, 1983) Neck, Raymond W.Observation of a massive migration of the snout butterfly, Libytheana bachmanii larvata (Strecker), in central Texas in 1971 is described. An association of peak migration periods and periodic precipitation episodes is believed to be causal in nature.Item Caution, Student Experience May Vary: Social Identities Impact a Student's Experience in Peer Discussions(2015-12) Eddy, Sarah L.; Brownell, Sara E.; Thummaphan, Phonraphee; Lan, Mming-Chih; Wenderoth, Mary pat; Eddy, Sarah L.In response to calls for implementing active learning in college-level science, technology, engineering, and mathematics courses, classrooms across the country are being transformed from instructor centered to student centered. In these active-learning classrooms, the dynamics among students becomes increasingly important for understanding student experiences. In this study, we focus on the role a student prefers to assume during peer discussions, and how this preferred role may vary given a student's social identities. In addition we explore whether three hypothesized barriers to participation may help explain participation difference in the classroom. These barriers are 1) students are excluded from the discussion by actions of their groupmates; 2) students are anxious about participating in peer discussion; and 3) students do not see value in peer discussions. Our results indicate that self-reported preferred roles in peer discussions can be predicted by student gender, race/ethnicity, and nationality. In addition, we found evidence for all three barriers, although some barriers were more salient for certain students than others. We encourage instructors to consider structuring their in-class activities in ways that promote equity, which may require more purposeful attention to alleviating the current differential student experiences with peer discussions.Item Combining and Comparing Coalescent, Distance and Character-Based Approaches for Barcoding Microalgaes: A Test with Chlorella-Like Species (Chlorophyta)(PLoS One, 2016) Zou, Shanmei; Fei, Cong; Song, Jiameng; Bao, Yachao; Meilin, He; Wang, ChanghaiSeveral different barcoding methods of distinguishing species have been advanced, but which method is the best is still controversial. Chlorella is becoming particularly promising in the development of second-generation biofuels. However, the taxonomy of Chlorella–like organisms is easily confused. Here we report a comprehensive barcoding analysis of Chlorella-like species from Chlorella, Chloroidium, Dictyosphaerium and Actinastrum based on rbcL, ITS, tufA and 16S sequences to test the efficiency of traditional barcoding, GMYC, ABGD, PTP, P ID and character-based barcoding methods. First of all, the barcoding results gave new insights into the taxonomic assessment of Chlorella-like organisms studied, including the clear species discrimination and resolution of potentially cryptic species complexes in C. sorokiniana, D. ehrenbergianum and C. Vulgaris. The tufA proved to be the most efficient barcoding locus, which thus could be as potential “specific barcode” for Chlorella-like species. The 16S failed in discriminating most closely related species. The resolution of GMYC, PTP, P ID, ABGD and character-based barcoding methods were variable among rbcL, ITS and tufA genes. The best resolution for species differentiation appeared in tufA analysis where GMYC, PTP, ABGD and character-based approaches produced consistent groups while the PTP method over-split the taxa. The character analysis of rbcL, ITS and tufA sequences could clearly distinguish all taxonomic groups respectively, including the potentially cryptic lineages, with many character attributes. Thus, the character-based barcoding provides an attractive complement to coalescent and distance-based barcoding. Our study represents the test that proves the efficiency of multiple DNA barcoding in species discrimination of microalgaes.Item The CREATE Approach to Primary Literature Shifts Undergraduates' Self-Assessed Ability to Read and Analyze Journal Articles, Attitudes about Science, and Epistemological Beliefs(2011-12) Hoskins, Sally G.; Lopatto, David; Stevens, Leslie M.; Stevens, Leslie M.The C. R. E. A. T. E. (Consider, Read, Elucidate hypotheses, Analyze and interpret data, Think of the next Experiment) method uses intensive analysis of primary literature in the undergraduate classroom to demystify and humanize science. We have reported previously that the method improves students' critical thinking and content integration abilities, while at the same time enhancing their self-reported understanding of "who does science, and why." We report here the results of an assessment that addressed C. R. E. A. T. E. students' attitudes about the nature of science, beliefs about learning, and confidence in their ability to read, analyze, and explain research articles. Using a Likert-style survey administered pre- and postcourse, we found significant changes in students' confidence in their ability to read and analyze primary literature, self-assessed understanding of the nature of science, and epistemological beliefs (e. g., their sense of whether knowledge is certain and scientific talent innate). Thus, within a single semester, the inexpensive C. R. E. A. T. E. method can shift not just students' analytical abilities and understanding of scientists as people, but can also positively affect students' confidence with analysis of primary literature, their insight into the processes of science, and their beliefs about learning.Item Critical Assessment of Sequence-Based Protein-Protein Interaction Prediction Methods that do not Require Homologous Protein Sequences(2009-12) Park, Yungki; Park, YungkiProtein-protein interactions underlie many important biological processes. Computational prediction methods can nicely complement experimental approaches for identifying protein-protein interactions. Recently, a unique category of sequence-based prediction methods has been put forward - unique in the sense that it does not require homologous protein sequences. This enables it to be universally applicable to all protein sequences unlike many of previous sequence-based prediction methods. If effective as claimed, these new sequence-based, universally applicable prediction methods would have far-reaching utilities in many areas of biology research. Results: Upon close survey, I realized that many of these new methods were ill-tested. In addition, newer methods were often published without performance comparison with previous ones. Thus, it is not clear how good they are and whether there are significant performance differences among them. In this study, I have implemented and thoroughly tested 4 different methods on large-scale, non-redundant data sets. It reveals several important points. First, significant performance differences are noted among different methods. Second, data sets typically used for training prediction methods appear significantly biased, limiting the general applicability of prediction methods trained with them. Third, there is still ample room for further developments. In addition, my analysis illustrates the importance of complementary performance measures coupled with right-sized data sets for meaningful benchmark tests. Conclusions: The current study reveals the potentials and limits of the new category of sequence-based protein-protein interaction prediction methods, which in turn provides a firm ground for future endeavours in this important area of contemporary bioinformatics.Item Cumulative Impacts of Development on Water Quality and Endangered Species in the Bull and West Bull Creek Watersheds(City of Austin, 1993) City of Austin Environmental and Conservation Services Department