Open Access. Powered by Scholars. Published by Universities.®

Biology Commons

Open Access. Powered by Scholars. Published by Universities.®

14170 Full-Text Articles 24317 Authors 1598938 Downloads 237 Institutions

All Articles in Biology

Faceted Search

14170 full-text articles. Page 1 of 392.

Gulf Sturgeon (Acipenser Oxyrinchus Desotoi) Pre-Restoration Occupancy Patterns On Ship Island, Mississippi Sound With An Evaluation Of Designated Critical Habitat Use By Eastern And Western Population Segments, Page Elizabeth Vick 2016 University of Southern Mississippi

Gulf Sturgeon (Acipenser Oxyrinchus Desotoi) Pre-Restoration Occupancy Patterns On Ship Island, Mississippi Sound With An Evaluation Of Designated Critical Habitat Use By Eastern And Western Population Segments, Page Elizabeth Vick

Master's Theses

Critical spawning and feeding habitat was designated for federally threatened, anadromous Gulf Sturgeon (GS) to aid in population recovery. This study examined GS occupancy, habitat use, and movement through critical habitat monitored by the Ship Island (SI) acoustic array during overwintering periods from 2011 to 2015 prior to MsCIP SI restoration. An occupancy index analyzed patterns of spatial and temporal habitat use of both western and eastern population segments (WPS and EPS, respectively) of GS on the SI array. The ends of SI along with the passes and cuts of the island, especially Dog Keys Pass (DKP), were occupied by ...


Quantifying Life: A Computational Approach To Teaching Mathematics To Biology Students, Dmitry Kondrashov 2016 University of Chicago

Quantifying Life: A Computational Approach To Teaching Mathematics To Biology Students, Dmitry Kondrashov

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Territorial Movement Game, Jan Rychtar 2016 The University of North Carolina at Greensboro

Territorial Movement Game, Jan Rychtar

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Designing And Mentoring In A Research Experience For Undergraduates, Alex Capaldi 2016 Valparaiso University

Designing And Mentoring In A Research Experience For Undergraduates, Alex Capaldi

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Experimenting With Mathematical Biology, Becky Sanft 2016 University of North Carolina at Asheville

Experimenting With Mathematical Biology, Becky Sanft

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Zombies, Predatory Wasps And Consciousness, James K. Peterson 2016 Clemson University

Zombies, Predatory Wasps And Consciousness, James K. Peterson

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


A Numerical Investigation Of A Simplified Human Birth Model, Roseanna Gossmann, Alexa Baumer, Lisa Fauci, Megan C. Leftwich 2016 Tulane University

A Numerical Investigation Of A Simplified Human Birth Model, Roseanna Gossmann, Alexa Baumer, Lisa Fauci, Megan C. Leftwich

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Dynamics Of A Two Vector, Two Pathogen, Single Host Model, Caleb L. Adams 2016 Radford University

Dynamics Of A Two Vector, Two Pathogen, Single Host Model, Caleb L. Adams

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Mathematical Modeling Of Vaccine Noncompliance, Jordan A. Bauer 2016 Valparaiso University

Mathematical Modeling Of Vaccine Noncompliance, Jordan A. Bauer

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Understanding Adipocyte Dynamics Through Mathematical Modeling, Katrina Johnson, Fred Adler 2016 University of Utah

Understanding Adipocyte Dynamics Through Mathematical Modeling, Katrina Johnson, Fred Adler

Annual Symposium on Biomathematics and Ecology: Education and Research

No abstract provided.


Correlation Analysis Of Enzyme Activities And Deconstruction Of Ammonia-Pretreated Switchgrass By Bacterial-Fungal Communities, Abhiney Jain, H. Sandra Pelle, J. Michael Henson 2016 Sacred Heart University

Correlation Analysis Of Enzyme Activities And Deconstruction Of Ammonia-Pretreated Switchgrass By Bacterial-Fungal Communities, Abhiney Jain, H. Sandra Pelle, J. Michael Henson

Biology Faculty Publications

The mixed microbial communities that occur naturally on lignocellulosic feedstocks can provide feedstock-specific enzyme mixtures to saccharify lignocelluloses. Bacterial-fungal communities were enriched from switchgrass bales to deconstruct ammonia-pretreated switchgrass (DSG). Correlation analysis was carried out to elucidate the relationship between microbial decomposition of DSG by these communities, enzymatic activities produced and enzymatic saccharification of DSG using these enzyme mixtures. Results of the analysis showed that β glucosidase activities and xylosidase activities limited the extent of microbial deconstruction and enzymatic saccharification of DSG. The results also underlined the importance of ligninase activity for the enzymatic saccharification of pretreated lignocellulosic feedstock. The ...


Comparative Population Genomics And Speciation Of Snakes Across The North American Deserts, Edward A. Myers 2016 The Graduate Center, City University of New York

Comparative Population Genomics And Speciation Of Snakes Across The North American Deserts, Edward A. Myers

All Graduate Works by Year: Dissertations, Theses, and Capstone Projects

Understanding the process of speciation is of central interest to evolutionary biologists. Speciation can be studied using a phylogeographic approach, by identifying regions that promote lineage divergence, addressing whether speciation has occurred with gene flow, and when extended to multiple taxa, addressing if the same patterns of speciation are shared across codistributed groups with different ecologies. Here I examine the comparative phylogeographic histories and population genomics of thirteen snake taxa that are widely distributed and co-occur across the arid southwest of North America. I first quantify the degree to which these species groups have a shared history of population divergence ...


The Regulation Of The Phosphatidate Phosphatase Gene Pah1 And Its Regulatory Role On Cell Homeostasis, Goldie Libby Sherr 2016 The Graduate Center, City University of New York

The Regulation Of The Phosphatidate Phosphatase Gene Pah1 And Its Regulatory Role On Cell Homeostasis, Goldie Libby Sherr

All Graduate Works by Year: Dissertations, Theses, and Capstone Projects

The Saccharomyces cerevisiae gene, PAH1, encodes a phosphatidate (PA) phosphatase that plays a fundamental role in lipid metabolism. PA phosphatases are key enzymes that catalyze the PA dephosphorylation reaction to form diacylglycerides, the first step in the synthesis of triacylglycerols. Pah1p, one of the main PA phosphatases in yeast, has not only emerged as a key player in lipid biosynthetic pathways, but also acts as an important regulator of nuclear membrane biogenesis, the transcriptional regulation of many inositol-sensitive upstream activating sequence (UASINO)containing genes needed for phospholipid synthesis, vacuole homeostasis, and lipid droplet formation. Due to its crucial role ...


Computerized Classification Of Surface Spikes In Three-Dimensional Electron Microscopic Reconstructions Of Viruses, Younes Benkarroum 2016 The Graduate Center, City University of New York

Computerized Classification Of Surface Spikes In Three-Dimensional Electron Microscopic Reconstructions Of Viruses, Younes Benkarroum

All Graduate Works by Year: Dissertations, Theses, and Capstone Projects

The purpose of this research is to develop computer techniques for improved three-dimensional (3D) reconstruction of viruses from electron microscopic images of them and for the subsequent improved classification of the surface spikes in the resulting reconstruction. The broader impact of such work is the following.

Influenza is an infectious disease caused by rapidly-changing viruses that appear seasonally in the human population. New strains of influenza viruses appear every year, with the potential to cause a serious global pandemic. Two kinds of spikes – hemagglutinin (HA) and neuraminidase (NA) – decorate the surface of the virus particles and these proteins are primarily ...


The Spatial Distribution And Density Of The Emerald Ash Borer Infestation In Rock Island And Moline, Il, Kendall Smith, Victoria Lason, Tierney Brosius, Michael Reisner 2016 Augustana College, Rock Island Illinois

The Spatial Distribution And Density Of The Emerald Ash Borer Infestation In Rock Island And Moline, Il, Kendall Smith, Victoria Lason, Tierney Brosius, Michael Reisner

Celebration of Learning

The Emerald Ash Borer (EAB) Agrilus planipennis Fairmaire (Copleoptera: Buprestidae) is a destructive colonizer of ash trees that arrived in the United States in 2002. Since then, EAB has been detected in 22 states and two Canadian provinces, and has proven to be a complicated management issue for many cities including Rock Island. The purpose of this study was to determine the spatial distribution and density of the EAB infestation in Rock Island, Ill and to identify potential correlations between host larval densities and visual symptoms. A continuation of spatial distribution was determined through a tree survey examining specific species ...


An Evolutionary And Mechanistic Perspective On Dietary Carbohydrate Restriction In Cancer Prevention, Eugene J. Fine, Colin E. Champ, Richard D. Feinman, Samuel Márquez, Rainer J. Klement 2016 Albert Einstein College of Medicine

An Evolutionary And Mechanistic Perspective On Dietary Carbohydrate Restriction In Cancer Prevention, Eugene J. Fine, Colin E. Champ, Richard D. Feinman, Samuel Márquez, Rainer J. Klement

Journal of Evolution and Health

The confluence of basic cell biochemistry, epidemiological and anthropologic evidence points to high dietary carbohydrate and the associated disruption of the glucose-insulin axis as causes of the current increase in metabolic disorders, metabolic syndrome, hypertension and cardiovascular disease. This hyperinsulinemic state likely contributes, as well, to an increased mutagenic microenvironment, with increased risk for cancer. This critical review discusses these risks in their historical and evolutionary context. The evidence supports the benefits of lowering the glycemic load of the diet as a preventive measure against the development of cancer.


Trans-Species Activity Of A Nonself Recognition Domain, Robert P. Smith, Kenji Wellman, Myron L. Smith 2016 Nova Southeastern University; Carleton University

Trans-Species Activity Of A Nonself Recognition Domain, Robert P. Smith, Kenji Wellman, Myron L. Smith

Robert P. Smith

Background: The ability to distinguish nonself from self is a fundamental characteristic of biological systems. In the filamentous fungus Neurospora crassa, multiple incompatibility genes mediate nonself recognition during vegetative growth. One of these genes, un-24, encodes both nonself recognition function and the large subunit of a type I ribonucleotide reductase, an evolutionarily conserved enzyme that is essential for the conversion of NDP precursors into dNDPs for use in DNA synthesis. Previous studies have shown that co-expression of the two allelic forms of un-24, Oakridge (OR) and Panama (PA), in the same cell results in cell death.

Results: We ...


Programmed Allee Effect In Bacteria Causes A Tradeoff Between Population Spread And Survival, Robert P. Smith, Cheemang Tan, Jaydeep K. Srimani, Anand Pai, Katherine A. Riccione, Hao Song, Lingchong You 2016 Duke University

Programmed Allee Effect In Bacteria Causes A Tradeoff Between Population Spread And Survival, Robert P. Smith, Cheemang Tan, Jaydeep K. Srimani, Anand Pai, Katherine A. Riccione, Hao Song, Lingchong You

Robert P. Smith

Dispersal is necessary for spread into new habitats, but it has also been shown to inhibit spread. Theoretical studies have suggested that the presence of a strong Allee effect may account for these counterintuitive observations. Experimental demonstration of this notion is lacking due to the difficulty in quantitative analysis of such phenomena in a natural setting. We engineered Escherichia coli to exhibit a strong Allee effect and examined how the Allee effect would affect the spread of the engineered bacteria. We showed that the Allee effect led to a biphasic dependence of bacterial spread on the dispersal rate: spread is ...


Phenotypic Signatures Arising From Unbalanced Bacterial Growth, Cheemang Tan, Robert P. Smith, Ming-Chi Tsai, Russell Schwartz, Lingchong You 2016 Carnegie Mellon University; University of California Davis

Phenotypic Signatures Arising From Unbalanced Bacterial Growth, Cheemang Tan, Robert P. Smith, Ming-Chi Tsai, Russell Schwartz, Lingchong You

Robert P. Smith

Fluctuations in the growth rate of a bacterial culture during unbalanced growth are generally considered undesirable in quantitative studies of bacterial physiology. Under well-controlled experimental conditions, however, these fluctuations are not random but instead reflect the interplay between intra-cellular networks underlying bacterial growth and the growth environment. Therefore, these fluctuations could be considered quantitative phenotypes of the bacteria under a specific growth condition. Here, we present a method to identify “phenotypic signatures” by time-frequency analysis of unbalanced growth curves measured with high temporal resolution. The signatures are then applied to differentiate amongst different bacterial strains or the same strain under ...


How Could Consciousness Emerge From Adaptive Functioning?, Max Velmans 2016 Goldsmiths, University of London

How Could Consciousness Emerge From Adaptive Functioning?, Max Velmans

Animal Sentience: An Interdisciplinary Journal on Animal Feeling

The sudden appearance of consciousness that Reber posits in creatures with flexible cell walls and motility rather than non-flexible cells walls and no motility involves an evolutionary discontinuity. This kind of “miracle” is required by all “discontinuity” theories of consciousness. To avoid miraculous emergence, one may need to consider continuity theories, which accept that different forms of consciousness and material functioning co-evolve but assume the existence of consciousness to be primal in the way that matter and energy are assumed to be primal in physics.


Digital Commons powered by bepress