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Articles 1861 - 1890 of 2751
Full-Text Articles in Biology
Ua66 Ogden College Of Science & Engineering Newsletter, Cheryl Stevens, Dean
Ua66 Ogden College Of Science & Engineering Newsletter, Cheryl Stevens, Dean
Ogden College of Science & Engineering Publications
No abstract provided.
Kif11 Dependent Cell Cycle Progression In Radial Glial Cells Is Required For Proper Neurogenesis In The Zebrafish Neural Tube, Kimberly Johnson, Chelsea Moriarty, Nessy Tania, Alissa Ortman, Kristina Dipietrantonio, Brittany Edens, Jean Eisenman, Deborah Ok, Sarah Krikorian, Jessica Barragan, Christophe Golé, Michael J.F. Barresi
Kif11 Dependent Cell Cycle Progression In Radial Glial Cells Is Required For Proper Neurogenesis In The Zebrafish Neural Tube, Kimberly Johnson, Chelsea Moriarty, Nessy Tania, Alissa Ortman, Kristina Dipietrantonio, Brittany Edens, Jean Eisenman, Deborah Ok, Sarah Krikorian, Jessica Barragan, Christophe Golé, Michael J.F. Barresi
Mathematics Sciences: Faculty Publications
Radial glia serve as the resident neural stem cells in the embryonic vertebrate nervous system, and their proliferation must be tightly regulated to generate the correct number of neuronal and glial cell progeny in the neural tube. During a forward genetic screen, we recently identified a zebrafish mutant in the kif11 loci that displayed a significant increase in radial glial cell bodies at the ventricular zone of the spinal cord. Kif11, also known as Eg5, is a kinesin-related, plus-end directed motor protein responsible for stabilizing and separating the bipolar mitotic spindle. We show here that Gfap+ radial glial cells express …
An Experimental Investigation Into The Mechanisms Of Bacterial Evolution, Zhenmao Wan
An Experimental Investigation Into The Mechanisms Of Bacterial Evolution, Zhenmao Wan
Dissertations, Theses, and Capstone Projects
This thesis studies the two fundamental mechanisms of bacterial evolution — horizontal gene transfer and spontaneous mutation, in the bacterium Escherichia coli through novel experimental assays and mathematical simulations. First, I will develop a growth assay utilizing the quantitative polymerase chain reaction (qPCR) to provide real-time enumeration of genetic marker abundance within bacterial populations. Second, I will focus on horizontal gene transfer in E. coli occurring through a process called conjugation. By fitting the qPCR data to a resource limited, logistic growth model, I will obtain estimated values of several key parameters governing the dynamics of DNA transfer through conjugation …
Warming, Soil Moisture, And Loss Of Snow Increase Bromus Tectorum’S Population Growth Rate, Aldo Compagnoni, Peter B. Adler
Warming, Soil Moisture, And Loss Of Snow Increase Bromus Tectorum’S Population Growth Rate, Aldo Compagnoni, Peter B. Adler
Green Canyon Environmental Research Area, Logan Utah
Climate change threatens to exacerbate the impacts of invasive species. In temperate ecosystems, direct effects of warming may be compounded by dramatic reductions in winter snow cover. Cheatgrass (Bromus tectorum) is arguably the most destructive biological invader in basins of the North American Intermountain West, and warming could increase its performance through direct effects on demographic rates or through indirect effects mediated by loss of snow. We conducted a two-year experimental manipulation of temperature and snow pack to test whether 1) warming increases cheatgrass population growth rate and 2) reduced snow cover contributes to cheatgrass’ positive response to …
06. Computer Science, University Of Central Oklahoma
06. Computer Science, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
04. Botany, University Of Central Oklahoma
04. Botany, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
09. Environmental Science, University Of Central Oklahoma
09. Environmental Science, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
12. Kinesiology, University Of Central Oklahoma
12. Kinesiology, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
08. Engineering, University Of Central Oklahoma
08. Engineering, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
10. Forensic Science, University Of Central Oklahoma
10. Forensic Science, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
05. Chemistry, University Of Central Oklahoma
05. Chemistry, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
14. Optometry, University Of Central Oklahoma
14. Optometry, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
15. Pharmacy, University Of Central Oklahoma
15. Pharmacy, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
17. Psychology, University Of Central Oklahoma
17. Psychology, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
19. Zoology, University Of Central Oklahoma
19. Zoology, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
03. Biology, University Of Central Oklahoma
03. Biology, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
13. Mathematics, University Of Central Oklahoma
13. Mathematics, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
16. Physics, University Of Central Oklahoma
16. Physics, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
02. Animal Science, University Of Central Oklahoma
02. Animal Science, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
07. Criminal Justice, University Of Central Oklahoma
07. Criminal Justice, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
11. Genetics, University Of Central Oklahoma
11. Genetics, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
18. Statistics, University Of Central Oklahoma
18. Statistics, University Of Central Oklahoma
Oklahoma Research Day Abstracts
No abstract provided.
Design, Synthesis And Applications Of Fluorescent And Electrochemical Probes, Giri K. Vegesna
Design, Synthesis And Applications Of Fluorescent And Electrochemical Probes, Giri K. Vegesna
Dissertations, Master's Theses and Master's Reports - Open
“Seeing is believing” the proverb well suits for fluorescent imaging probes. Since we can selectively and sensitively visualize small biomolecules, organelles such as lysosomes, neutral molecules, metal ions, anions through cellular imaging, fluorescent probes can help shed light on the physiological and pathophysiological path ways. Since these biomolecules are produced in low concentrations in the biochemical pathways, general analytical techniques either fail to detect or are not sensitive enough to differentiate the relative concentrations. During my Ph.D. study, I exploited synthetic organic techniques to design and synthesize fluorescent probes with desirable properties such as high water solubility, high sensitivity and …
Effects Of River Current Inflow On Dissolved Oxygen And Temperature Of Refuge Zones For Cisco In Lake Bemidji, Bryant C. Swenson
Effects Of River Current Inflow On Dissolved Oxygen And Temperature Of Refuge Zones For Cisco In Lake Bemidji, Bryant C. Swenson
Journal of Earth and Life Science
The objectives of this study were to (1) determine if the inflow current from the Mississippi River affects temperature and dissolved oxygen in Lake Bemidji, (2) determine how the amount of suitable cisco Coregonus artedi habitat changes over the summer in Lake Bemidji, and (3) predict how much cisco habitat would be available under a climate warming scenario. Summer fish kill of cisco occurs in most years on Lake Bemidji resulting from low dissolved oxygen in the hypolimnion and high water temperatures in the epilimnion. Dissolved oxygen and temperature profiles provided evidence to suggest the north basin is more suitable …
Changing Body Condition In Walleye With Reference To Ideal Sample Size Requirements, Kevin Longtin
Changing Body Condition In Walleye With Reference To Ideal Sample Size Requirements, Kevin Longtin
Journal of Earth and Life Science
The objective of this study was to determine if walleye Sander vitreus percent dry weight, a measure of condition, differed among summer months of 2014 on Maple Lake, Minnesota. A second objective was to determine if there was a relationship between condition and body temperature, total length, or wet weight. Between three and six walleyes were collected per month by hook and line methods. All fish had internal body temperatures taken at the time of capture and were oven dried in the laboratory at 80 °C in order to measure percent dry weight. There was no relationship between condition and …
Upregulation Of Functional Kv11.1 Isoform Expression By Inhibition Of Intronic Polyadenylation With Antisense Morpholino Oligonucleotides, Qiuming Gong, Matthew R. Stump, Zhengfeng Zhou
Upregulation Of Functional Kv11.1 Isoform Expression By Inhibition Of Intronic Polyadenylation With Antisense Morpholino Oligonucleotides, Qiuming Gong, Matthew R. Stump, Zhengfeng Zhou
Faculty Publications - Department of Biological & Molecular Science
The KCNH2 gene encodes the Kv11.1 potassium channel that conducts the rapidly activating delayed rectifier current in the heart. KCNH2 pre-mRNA undergoes alternative processing; intron 9 splicing leads to the formation of a functional, full-length Kv11.1a isoform, while polyadenylationwithin intron 9 generates a non-functional, Cterminally truncated Kv11.1a-USO isoform. The relative expression of Kv11.1 isoforms plays an important role in the regulation of Kv11.1 channel function and the pathogenesis of long QT syndrome. In this study,we identified cis-acting elements that are required for KCNH2 intron 9 poly(A) signal activity. Mutation of these elements decreased Kv11.1a-USO expression and increased the expression of …
Bridging Physics And Biology Teaching Through Modeling, Anne-Marie Hoskinson, Brian A. Couch, Benjamin M. Zwickl, Kathleen A. Hinko, Marcos D. Caballero
Bridging Physics And Biology Teaching Through Modeling, Anne-Marie Hoskinson, Brian A. Couch, Benjamin M. Zwickl, Kathleen A. Hinko, Marcos D. Caballero
School of Biological Sciences: Faculty Publications
As the frontiers of biology become increasingly interdisciplinary, the physics education community has engaged in ongoing efforts to make physics classes more relevant to life science majors. These efforts are complicated by the many apparent differences between these fields, including the types of systems that each studies, the behavior of those systems, the kinds of measurements that each makes, and the role of mathematics in each field. Nonetheless, physics and biology are both sciences that rely on observations and measurements to construct models of the natural world. In this article, we propose that efforts to bridge the teaching of these …
Defining The Physiochemical, Biological And Habitat Requirements For The Upper Extant Of Oncorhynchus Mykiss Distribution, Emily Powers
Defining The Physiochemical, Biological And Habitat Requirements For The Upper Extant Of Oncorhynchus Mykiss Distribution, Emily Powers
Journal of Earth and Life Science
The distribution of rainbow trout is strongly influenced by their habitat. As climatic conditions change, the distribution of rainbow trout populations will change along with them. The objective of this study was to identify the particular habitat parameters that rainbow trout select for in this lotic system and to specifically assess how this relates to the upper extant of their distribution. By assessing the distribution of the upper extant specifically, future research may be conducted to better assess climatic changes on a small and/or large scale basis. A 9,000 m section of the Clearwater River was used as the study …
The Effects Of Angling Pressure On Northern Pike Size Structure, Ryan Carrow
The Effects Of Angling Pressure On Northern Pike Size Structure, Ryan Carrow
Journal of Earth and Life Science
A number of conditions within a lake system can affect northern pike (Esox lucius) size structure. Of these conditions, the amount of angling pressure may have the biggest effect on the size structure of northern pike in Minnesota lake systems. In this study, five private and five public lakes were chosen near Bemidji, Minnesota. Each lake was fished for twenty angling hours using live northern hog suckers (Hypentelium nigricans) or golden shiners (Notemigonus crysoleucas). Total length (mm) and weight (kg) were measured for each northern pike caught. The number of fish houses that were …
Boron Nutrition Of Burley And Dark Tobacco, Laura Ann Frakes Mitchell
Boron Nutrition Of Burley And Dark Tobacco, Laura Ann Frakes Mitchell
Theses and Dissertations--Plant and Soil Sciences
The incidences of suspected Boron (B) deficiency have increased recently in Kentucky tobacco fields, potentially due to recent changes in management practices. The symptoms observed in the field include; hollow stalk, stunted growth, deformed or no bud formation, small slits on the lower leaf midrib and uncontrollable breaking of the midrib approximately two inches from the stalk. B is a micronutrient tobacco needs in minute amounts, however excessive additions of B could cause toxicity. The objectives of this work were to 1) establish critical points for B sufficiency, 2) describe and define B deficiency and toxicity symptoms and 3) develop …