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Articles 1 - 30 of 97
Full-Text Articles in Biochemistry, Biophysics, and Structural Biology
Evidence That Aquaporin 11 (Aqp11) In The Spiny Dogfish (Squalus Acanthias) May Represent A Pseudogene, Christopher P. Cutler, Meghan Canicatti, Esosa Omoregie
Evidence That Aquaporin 11 (Aqp11) In The Spiny Dogfish (Squalus Acanthias) May Represent A Pseudogene, Christopher P. Cutler, Meghan Canicatti, Esosa Omoregie
Department of Biology Faculty Publications
Various attempts to amplify an AQP11 cDNA from tissues of the spiny dogfish (Squalus acanthias) were made. Two pairs of deoxy-inosine-containing degenerate primers were designed based on conserved amino acid sequences from an AQP11 alignment. These primers yielded some faint bands from gill cDNA that were sequenced. Blast searches with the sequences showed they were not AQP11. An elasmobranch AQP11 nucleotide sequence alignment was produced to identify conserved regions to make further degenerate primers. One primer pair produced a short 148 bp fragment showing particularly strong amplification in gill and intestine. It was sequenced and represented a piece of the …
The Biobehavioral Effects Of Embryonic Exposure To Neural Inflammation And Oxidative Stress In Zebrafish, Dalton J. Anderson
The Biobehavioral Effects Of Embryonic Exposure To Neural Inflammation And Oxidative Stress In Zebrafish, Dalton J. Anderson
Honors College Theses
The purpose of this research is to improve understanding of the neurodevelopmental effects of embryonic exposure to elevated inflammation and oxidative stress induced by the antipyretic drug acetaminophen (APAP). Our study was the first to examine the interactive effects of APAP and inflammation in zebrafish embryos and how the treatments affect brain development and larval behavior. Experimental groups of zebrafish larvae were exposed to lipopolysaccharide (LPS) to induce inflammation, APAP, or LPS + APAP and larval behavior was analyzed using Ethovision automated behavioral tracking software. We also measured changes in whole-brain Glycogen Synthase Kinase 3 Beta (GSK3B) and GSK3B phosphorylation, …
Length Of Course-Based Undergraduate Research Experiences (Cure) Impacts Student Learning And Attitudinal Outcomes: A Study Of The Malate Dehydrogenase Cures Community (Mcc), Sue Ellen Dechenne-Peters, John Rakus, Amy D. Parente, Tamara L. Mans, Rebecca Eddy, Nicole Galport, Courtney Koletar, Joseph J. Provost, J. Ellis Bell, Jessica K. Bell
Length Of Course-Based Undergraduate Research Experiences (Cure) Impacts Student Learning And Attitudinal Outcomes: A Study Of The Malate Dehydrogenase Cures Community (Mcc), Sue Ellen Dechenne-Peters, John Rakus, Amy D. Parente, Tamara L. Mans, Rebecca Eddy, Nicole Galport, Courtney Koletar, Joseph J. Provost, J. Ellis Bell, Jessica K. Bell
Department of Biology Faculty Publications
Course-based undergraduate research experiences (CUREs) are laboratory courses that integrate broadly relevant problems, discovery, use of the scientific process, collaboration, and iteration to provide more students with research experiences than is possible in individually mentored faculty laboratories. Members of the national Malate dehydrogenase CUREs Community (MCC) investigated the differences in student impacts between traditional laboratory courses (control), a short module CURE within traditional laboratory courses (mCURE), and CUREs lasting the entire course (cCURE). The sample included approximately 1,500 students taught by 22 faculty at 19 institutions. We investigated course structures for elements of a CURE and student outcomes including student …
Dna Methylation And The Response To Infection In Introduced House Sparrows, Melanie Gibson
Dna Methylation And The Response To Infection In Introduced House Sparrows, Melanie Gibson
Electronic Theses and Dissertations
Epigenetics is the study of molecular modification of a genome without changing its base pairs. The most studied type of epigenetic mechanism is DNA methylation, which is capable of turning a gene “on” or “off.” Epigenetic potential is the capacity to which an individual can have methylation on its genome. The more CpGs available, the greater the epigenetic potential. In invasive species, genetic variation has been observed to be paradoxical: not much of it exists on a genomic level, but epigenetically, phenotypic variation can occur. The focus on shift in gene expression in this study is on Toll-Like Receptor 4 …
Nanoparticle Conjugated Photosensitizer For Targeted Photodynamic Inactivation Of Cancer Cells, Symone D. Crowder
Nanoparticle Conjugated Photosensitizer For Targeted Photodynamic Inactivation Of Cancer Cells, Symone D. Crowder
Honors College Theses
Photodynamic therapy (PDT) is considered to be a potential replacement for traditional methods of chemotherapy. It includes the administration of photosensitizing agents (PS), which generate reactive oxygen species (ROS) upon excitation at a specific wavelength. With new outlooks and techniques, cancer research is advancing each day. It has allowed the progress of several theranostic drug delivery systems (DDS) exploring the area of nanomedicine.2 In the present work, a Rhodamine derivative, Rhodamine 6G (R6G) was used as the PS. In general, rhodamine compounds undergo cytotoxic reactions on photoexcitation by electron transfer reactions with folic acid within cells, making them a favorable …
Synthesis Of Trifluoromethyl Ketones By (Diethylamino) Sulfur Trifluoride (Dast)-Mediated Nucleophilic Trifluoromethylation Of Benzoic Acids, Michael A. Vescio
Synthesis Of Trifluoromethyl Ketones By (Diethylamino) Sulfur Trifluoride (Dast)-Mediated Nucleophilic Trifluoromethylation Of Benzoic Acids, Michael A. Vescio
Honors College Theses
Within the past few decades, the presence of fluorine containing
organic molecules has increased significantly. Many of the
current industrial production methods are not cost-effective,
practical, or inherently safe. This work describes a new methodology
for the synthesis of trifluoromethyl ketones. Our new method involves
the use of benzoic acid and trifluoromethyl trimethylsilane (TMSCF3) as starting
materials along with diethylamino sulfur trifluoride (DAST) as a reagent
to obtain moderate to good yields of expected products in a short
reaction times.
The Use Of Silica Nanoparticles For Controlled Drug Delivery Of Nicotine, Jennifer C. Iwenofu
The Use Of Silica Nanoparticles For Controlled Drug Delivery Of Nicotine, Jennifer C. Iwenofu
Honors College Theses
Drug molecules can be administered in different ways to the human body. Nanotechnology stands out over other alternatives by delivering drugs to specific locations and reducing reactivity time. In this research, the hydrogen bond between silica nanoparticles and the drug molecule, nicotine, were studied to controllably deliver nicotine by varying pH values.
Analysis Of The Light Responsive Azobenzene Peptide Nucleic Acid Duplexes, Kat Nguyen
Analysis Of The Light Responsive Azobenzene Peptide Nucleic Acid Duplexes, Kat Nguyen
Honors College Theses
Peptide nucleic acids (PNAs) are oligonucleotide analogues in which the sugar-phosphate backbone has been replaced by a pseudopeptide skeleton. Since PNAs use the natural nucleobases (Adenine, Thymine, Cytosine, Uracil, and Guanine) found in either DNA and/or RNA, they are able to hybridize according to Watson-Crick base-pairing to form duplexes. PNA is a promising therapeutic agent because they can function as antigene or antisense chemical agents. To further enhance their utility, we aim to incorporate a photoswitchable moiety using azobenzene. Here, we report the results of the synthesis and purification of a photoswitchable 11 mer PNA along with initial characterization efforts.
Physiological And Biochemical Thermal Stress Conditions Of The Ribbed Mussel, Geukensia Demissa, From Exposed And Less Exposed Areas In The Intertidal Salt Marsh On Tybee Island, Georgia., Jody E. Erber
Honors College Theses
Geukensia demissa, the ribbed mussel, is a keystone species of Georgia’s coastline that is at risk of experiencing detrimental thermal stress due to climate change. G. demissa interacts positively with a species of salt marsh cordgrass, Spartina alterniflora. Mussels form aggregates beneath salt marsh cordgrass stems where they are shaded and less exposed to sun rays. However, some mussels end up in areas which lack cordgrass and are directly exposed to sun rays. Body temperatures of mussels from exposed areas were found to be higher than mussels from less exposed areas. Thermal stress levels of mussels can be …
Structural And Functional Characterization Of Two Poly(Aspartic Acid) Hydrolases, Amanda Jansch
Structural And Functional Characterization Of Two Poly(Aspartic Acid) Hydrolases, Amanda Jansch
Electronic Theses and Dissertations
Due to the accumulation of polymers in the environment, biodegradable alternatives should be used in place of commonly used polymers like poly(carboxylates). Poly(carboxylates) are water-soluble polymers (WSPs) that make up a variety of consumer products, such as detergents, descaling agents, and superabsorbent materials commonly found in diapers and feminine hygiene products. While the visible accumulation of these products may not be obvious, it is necessary to reduce the amount entering the environment. Poly(aspartic acid) (PAA) is an alternative WSP that is biodegradable through the action of three different enzymes, PahZ1KT-1, PahZ2KT-1, and PahZ1KP-2. Originally …
Development Of Novel Pyridazine Derivatives And Drug Delivery Systems Against Dengue, Janae A. Culmer
Development Of Novel Pyridazine Derivatives And Drug Delivery Systems Against Dengue, Janae A. Culmer
Electronic Theses and Dissertations
The lack of approved vaccines, medications and treatment regimens has significantly contributed to the rapid spread of mosquito-borne viruses such as Dengue and Zika virus. The complex immunopathology of these viruses presents limitations for the development and implementation of a definitive, safe and effective approach to combat infections.Previous research has demonstrated that vector control strategies such as the elimination of larval habitats, larviciding with insecticides, the use of biological agents and the application of adulticides have been unsuccessful in the reduction of viral transmission leading to the need for the continued development of antivirals. This research proposes an approach for …
Epigenetic Buffering In Introduced House Sparrows, M. Ellesse Lauer
Epigenetic Buffering In Introduced House Sparrows, M. Ellesse Lauer
Electronic Theses and Dissertations
Epigenetic buffering, as an environmentally induced increase in variance of epigenetic states that increases phenotypic variation to buffer populations against decreased fitness, may be a factor that resolves the genetic paradox of introduced species. DNA methylation is a molecular mechanism that could facilitate epigenetic buffering by changing in response to environmental stress. Therefore, epigenetic buffering can be detected through increased variance in DNA methylation in novel or heterogeneous environments. Introduced house sparrows (Passer domesticus) have well-documented phenotypic changes with low genetic diversity, high epigenetic diversity, and high variance in DNA methylation that provide a characteristic signature of epigenetic buffering. …
Biomimetic Synthesis Of Palladium Nanoparticles For Catalytic Application, Emily A. Groover
Biomimetic Synthesis Of Palladium Nanoparticles For Catalytic Application, Emily A. Groover
Electronic Theses and Dissertations
The synthesis of palladium nanoparticles (Pd NPs) using materials-directed peptides is a novel, nontoxic approach which exerts a high level of control over the particle size and shape. This biomimetic technique is environmentally benign, featuring nonhazardous ligands and ambient conditions. Nanoparticles are extremely reactive catalysts, boasting a large surface-to-volume ratio when compared to their bulk counterparts. The rational design of these nanoparticles using peptides has been very successful in aqueous environments, but no research has been done to apply it in organic systems. As such, the biomimetic synthesis of Pd NPs in an organic system is here investigated, with ethanol …
Aquaporin Expression And Cholesterol Content In Eel Swimbladder Tissue, Victoria Drechsel, Gabriel Schneebauer, Birgit Fiechtner, Christopher P. Cutler, Bernd Pelster
Aquaporin Expression And Cholesterol Content In Eel Swimbladder Tissue, Victoria Drechsel, Gabriel Schneebauer, Birgit Fiechtner, Christopher P. Cutler, Bernd Pelster
Department of Biology Faculty Publications
Leakiness of the swimbladder wall of teleost fishes must be prevented to avoid diffusional loss of gases out of the swimbladder. Guanine incrustation as well as high concentrations of cholesterol in swimbladder membranes in midwater and deep-sea fish has been connected to a reduced gas permeability of the swimbladder wall. On the contrary, the swimbladder is filled by diffusion of gases, mainly oxygen and CO2, from the blood and the gas gland cells into the swimbladder lumen. In swimbladder tissue of the zebrafish and the Japanese eel, aquaporin mRNA has been detected, and the aquaporin protein has been considered important …
Impacts Of Detritivore Diversity Loss On Instream Decomposition Are Greatest In The Tropics, Luz Boyero, Naiara López-Rojo, Alan M. Tonin, Javier Pérez, Francisco Correa-Araneda, Richard G. Pearson, Jaime Bosch, Ricardo J. Albariño, Sankarappan Anbalagan, Leon A. Barmuta, Ana Basaguren, Francis J. Burdon, Adriano Caliman, Marcos Callisto, Ian C. Campbell, Bradley J. Cardinale, J. Jesús Casas, Ana M. Chará-Serna, Eric Chauvet, Szymon Ciapała, Jose Checo Colón-Gaud, Aydeé Cornejo, Aaron M. Davis, Monika Degebrodt, Emerson S. Dias, María E. Díaz, Michael M. Douglas, Andrea C. Encalada, Ricardo Figueroa, Alexander S. Flecker, Tadeusz Fleituch, Erica A. García, Gabriela García, Pavel E. García, Mark O. Gessner, Jesús E. Gómez, Sergio Gómez, Jose F. Gonçalves Jr, Manuel A. S. Graça, Daniel C. Gwinn, Robert O. Hall Jr., Neusa Hamada, Cang Hui, Daichi Imazawa, Tomoya Iwata, Samuel K. Kariuki, Andrea Landeira-Dabarca, Kelsey A. Laymon, María Leal, Richard Marchant, Renato T. Martins, Frank O. Masese, Megan Maul, Brendan G. Mckie, Adriana O. Medeiros, Charles M. M’ Erimba, Jen A. Middleton, Silvia Monroy, Timo Muotka, Junjiro N. Negishi, Alonso Ramírez, John S. Richardson, José Rincón, Juan Rubio-Ríos, Gisele M. Dos Santos, Romain Sarremejane, Fran Sheldon, Augustine Sitati, Nathalie S. D. Tenkiano, Scott D. Tiegs, Janine R. Tolod, Michael Venarsky, Anne Watson, Catherine M. Yule
Impacts Of Detritivore Diversity Loss On Instream Decomposition Are Greatest In The Tropics, Luz Boyero, Naiara López-Rojo, Alan M. Tonin, Javier Pérez, Francisco Correa-Araneda, Richard G. Pearson, Jaime Bosch, Ricardo J. Albariño, Sankarappan Anbalagan, Leon A. Barmuta, Ana Basaguren, Francis J. Burdon, Adriano Caliman, Marcos Callisto, Ian C. Campbell, Bradley J. Cardinale, J. Jesús Casas, Ana M. Chará-Serna, Eric Chauvet, Szymon Ciapała, Jose Checo Colón-Gaud, Aydeé Cornejo, Aaron M. Davis, Monika Degebrodt, Emerson S. Dias, María E. Díaz, Michael M. Douglas, Andrea C. Encalada, Ricardo Figueroa, Alexander S. Flecker, Tadeusz Fleituch, Erica A. García, Gabriela García, Pavel E. García, Mark O. Gessner, Jesús E. Gómez, Sergio Gómez, Jose F. Gonçalves Jr, Manuel A. S. Graça, Daniel C. Gwinn, Robert O. Hall Jr., Neusa Hamada, Cang Hui, Daichi Imazawa, Tomoya Iwata, Samuel K. Kariuki, Andrea Landeira-Dabarca, Kelsey A. Laymon, María Leal, Richard Marchant, Renato T. Martins, Frank O. Masese, Megan Maul, Brendan G. Mckie, Adriana O. Medeiros, Charles M. M’ Erimba, Jen A. Middleton, Silvia Monroy, Timo Muotka, Junjiro N. Negishi, Alonso Ramírez, John S. Richardson, José Rincón, Juan Rubio-Ríos, Gisele M. Dos Santos, Romain Sarremejane, Fran Sheldon, Augustine Sitati, Nathalie S. D. Tenkiano, Scott D. Tiegs, Janine R. Tolod, Michael Venarsky, Anne Watson, Catherine M. Yule
Department of Biology Faculty Publications
The relationship between detritivore diversity and decomposition can provide information on how biogeochemical cycles are affected by ongoing rates of extinction, but such evidence has come mostly from local studies and microcosm experiments. We conducted a globally distributed experiment (38 streams across 23 countries in 6 continents) using standardised methods to test the hypothesis that detritivore diversity enhances litter decomposition in streams, to establish the role of other characteristics of detritivore assemblages (abundance, biomass and body size), and to determine how patterns vary across realms, biomes and climates. We observed a positive relationship between diversity and decomposition, strongest in tropical …
Latitude Dictates Plant Diversity Effects On Instream Decomposition, Luz Boyero, Javier Pérez, Naiara López-Rojo, Alan M. Tonin, Francisco Correa-Araneda, Richard G. Pearson, Jaime Bosch, Ricardo J. Albariño, Sankarappan Anbalagan, Leon A. Barmuta, Leah Beesley, Francis J. Burdon, Adriano Caliman, Marcos Callisto, Ian C. Campbell, Bradley J. Cardinale, J. Jesús Casas, Ana M. Chará-Serna, Szymon Ciapała, Eric Chauvet, Jose Checo Colón-Gaud, Aydeé Cornejo, Aaron M. Davis, Monika Degebrodt, Emerson S. Dias, María E. Díaz, Michael M. Douglas, Arturo Elosegi, Andrea C. Encalada, Elvira De Eyto, Ricardo Figueroa, Alexander S. Flecker, André Frainer, Juliana S. França, Erica A. García, Gabriela García, Pavel E. García, Mark O. Gessner, Paul S. Giller, Jesús E. Gómez, Sergio Gómez, José F. Gonçalves Jr., Manuel A. S. Graça, Robert O. Hall Jr., Neusa Hamada, Luiz U. Hepp, Cang Hui, Daichi Imazawa, Tomoya Iwata, Edson S. A. Junior, Samuel K. Kariuki, Andrea Landeira-Dabarca, María Leal, Kaisa Lehosmaa, Charles M. M’ Erimba, Richard Marchant, Renato T. Martins, Frank O. Masese, Megan Camden, Brendan G. Mckie, Adriana O. Medeiros, Jen A. Middleton, Timo Muotka, Junjiro N. Negishi, Jesús Pozo, Alonso Ramírez, Renan S. Rezende, John S. Richardson, José Rincón, Juan Rubio-Ríos, Claudia Serrano, Angela R. Shaffer, Fran Sheldon, Christopher M. Swan, Nathalie S. D. Tenkiano, Scott D. Tiegs, Janine R. Tolod, Michael Vernasky, Anne Watson, Mourine J. Yegon, Catherine M. Yule
Latitude Dictates Plant Diversity Effects On Instream Decomposition, Luz Boyero, Javier Pérez, Naiara López-Rojo, Alan M. Tonin, Francisco Correa-Araneda, Richard G. Pearson, Jaime Bosch, Ricardo J. Albariño, Sankarappan Anbalagan, Leon A. Barmuta, Leah Beesley, Francis J. Burdon, Adriano Caliman, Marcos Callisto, Ian C. Campbell, Bradley J. Cardinale, J. Jesús Casas, Ana M. Chará-Serna, Szymon Ciapała, Eric Chauvet, Jose Checo Colón-Gaud, Aydeé Cornejo, Aaron M. Davis, Monika Degebrodt, Emerson S. Dias, María E. Díaz, Michael M. Douglas, Arturo Elosegi, Andrea C. Encalada, Elvira De Eyto, Ricardo Figueroa, Alexander S. Flecker, André Frainer, Juliana S. França, Erica A. García, Gabriela García, Pavel E. García, Mark O. Gessner, Paul S. Giller, Jesús E. Gómez, Sergio Gómez, José F. Gonçalves Jr., Manuel A. S. Graça, Robert O. Hall Jr., Neusa Hamada, Luiz U. Hepp, Cang Hui, Daichi Imazawa, Tomoya Iwata, Edson S. A. Junior, Samuel K. Kariuki, Andrea Landeira-Dabarca, María Leal, Kaisa Lehosmaa, Charles M. M’ Erimba, Richard Marchant, Renato T. Martins, Frank O. Masese, Megan Camden, Brendan G. Mckie, Adriana O. Medeiros, Jen A. Middleton, Timo Muotka, Junjiro N. Negishi, Jesús Pozo, Alonso Ramírez, Renan S. Rezende, John S. Richardson, José Rincón, Juan Rubio-Ríos, Claudia Serrano, Angela R. Shaffer, Fran Sheldon, Christopher M. Swan, Nathalie S. D. Tenkiano, Scott D. Tiegs, Janine R. Tolod, Michael Vernasky, Anne Watson, Mourine J. Yegon, Catherine M. Yule
Department of Biology Faculty Publications
Running waters contribute substantially to global carbon fluxes through decomposition of terrestrial plant litter by aquatic microorganisms and detritivores. Diversity of this litter may influence instream decomposition globally in ways that are not yet understood. We investigated latitudinal differences in decomposition of litter mixtures of low and high functional diversity in 40 streams on 6 continents and spanning 113° of latitude. Despite important variability in our dataset, we found latitudinal differences in the effect of litter functional diversity on decomposition, which we explained as evolutionary adaptations of litter-consuming detritivores to resource availability. Specifically, a balanced diet effect appears to operate …
Study Of Student Resource Use In Introductory Chemistry Courses, Sarah E. Melvin
Study Of Student Resource Use In Introductory Chemistry Courses, Sarah E. Melvin
Electronic Theses and Dissertations
According to the U.S. Government Accountability Office (GAO), college textbook prices have increased by 186% from 1986 to 2004.1 The impact of rising cost of textbooks is increasingly apparent as students are becoming more selective in the courses they enroll in, as well as more concerned with the quality of the learning experience they receive once enrolled in a course.1 In response to high textbook prices, open-education resources (OER) are increasingly becoming more accepted for student use as an alternative to traditional textbook options. OERs are open-source textbook and/or materials that are free to use without worrying about copyright …
The Role Of Reactive Oxygen Species In The Gut Immune Response Of Cat Fleas (Ctenocephalides Felis), Clark Hall
The Role Of Reactive Oxygen Species In The Gut Immune Response Of Cat Fleas (Ctenocephalides Felis), Clark Hall
Honors College Theses
Fleas transmit numerous deadly and debilitating diseases, including the causative agents of murine typhus and plague. Because initial entry of these infectious agents occurs while blood feeding, the immune response in the flea gut is considered to be the first line of defense against invading microbes. However, relatively few studies have identified the flea immune molecules that effectively resist or limit infection in the gut. In other hematophagous insects, an immediate immune response to imbibed pathogens is the generation of reactive oxygen species (ROS). In this study, we utilized cat fleas (Ctenocephalides felis) to investigate whether natural infections …
Investigating The Toxicology Of Intramuscular Injected Cnt-Ab In Mice Followed By Microwave Hyperthermia., Conner Clark
Investigating The Toxicology Of Intramuscular Injected Cnt-Ab In Mice Followed By Microwave Hyperthermia., Conner Clark
Honors College Theses
The advent of carbon nanotubes (CNTs) has led to a wide range of research in various fields including cancer therapy for targeting specific localized and site-specific treatment. Carbon nanotubes bound to tumor specific antibodies (Ab) offers specific treatment for cancer cells without affecting surrounding tissue. This treatment makes use of infrared absorptive properties of nanotubes to incinerate both the nanotube and its associated tumor in vivo. We seek to affirm the initial results of CNT in cancer therapy by investigating the toxicological effect in mice injected with CNT-Ab followed by microwave hypothermia. After 1-week post-injection, mice were sacrificed followed …
Synthesized Tripodal Amine As Potential Anti-Cancer Therapeutic, Abigail G. Mcnamee
Synthesized Tripodal Amine As Potential Anti-Cancer Therapeutic, Abigail G. Mcnamee
Honors College Theses
Cancer remains a prevalent disease today. This disease may manifest itself in many different ways and affect a variety of tissues with everything from the brain to the blood. With this wide diversity of cancer types, treatment can be complicated since there is not a “one size fits all” treatment for the disease. Surgery, radiation, and chemotherapy are all options that must be weighed with their benefits and side effects. Ultimately though, there are not enough effective treatment options available for every type of cancer. This leaves many with the grim prognosis of never being cured. With this clear need …
Determination Of Optimal Mild Organic Solvents Of Pdnps For Carbon-Carbon Coupling Reactions, Trina Biswas
Determination Of Optimal Mild Organic Solvents Of Pdnps For Carbon-Carbon Coupling Reactions, Trina Biswas
Honors College Theses
The synthesis of nanoparticles is an increasingly popular field of interest. The application of nanoparticles is especially popular in the field of nanocatalysts. Metal nanoparticles (NPs) are favorable for catalysis because of the large surface area to volume ratio, which allows them to catalyze a variety of reactions using lesser amounts of active material. As the field of nanoparticle research expands, efforts are being made to create more sustainable approaches to the synthesis of these particles. This research sought to translate the benefits of peptide-based synthesis to organic solvents and use less toxic organic solvents for carbon-carbon coupling reactions, like …
Mite Load Predicts The Quality Of Sexual Color And Locomotor Performance In A Sexually Dichromatic Lizard, Richard W. Orton, Chase T. Kinsey, Lance D. Mcbrayer
Mite Load Predicts The Quality Of Sexual Color And Locomotor Performance In A Sexually Dichromatic Lizard, Richard W. Orton, Chase T. Kinsey, Lance D. Mcbrayer
Department of Biology Faculty Publications
Since Darwin, the maintenance of bright sexual colors has recurrently been linked to mate preference. However, the mechanisms underpinning such preferences for bright colors would not be resolved for another century. Likely, the idea of selection for colors that could decrease the chances of survival (e.g., flashy colors that can inadvertently attract predators) was perceived as counterintuitive. It is now widely accepted that these extreme colors often communicate to mates the ability to survive despite a “handicap” and act as honest signals of individual quality when they are correlated with the quality of other traits that are directly linked to …
Global Patterns And Drivers Of Ecosystem Functioning In Rivers And Riparian Zones, Scott D. Tiegs, David M. Costello, Mark W. Isken, Guy Woodward, Peter B. Mcintyre, Mark O. Gessner, Eric Chauvet, Natalie A. Griffiths, Alexander S. Flecker, Vicenç Acuña, Ricardo J. Albariño, Daniel C. Allen, Cecilia Alonso, Patricio Andino, Clay Arango, Jukka Aroviita, Marcus V. M. Barbosa, Leon A. Barmuta, Colden V. Baxter, Jose Checo Colón-Gaud
Global Patterns And Drivers Of Ecosystem Functioning In Rivers And Riparian Zones, Scott D. Tiegs, David M. Costello, Mark W. Isken, Guy Woodward, Peter B. Mcintyre, Mark O. Gessner, Eric Chauvet, Natalie A. Griffiths, Alexander S. Flecker, Vicenç Acuña, Ricardo J. Albariño, Daniel C. Allen, Cecilia Alonso, Patricio Andino, Clay Arango, Jukka Aroviita, Marcus V. M. Barbosa, Leon A. Barmuta, Colden V. Baxter, Jose Checo Colón-Gaud
Department of Biology Faculty Publications
River ecosystems receive and process vast quantities of terrestrial organic carbon, the fate of which depends strongly on microbial activity. Variation in and controls of processing rates, however, are poorly characterized at the global scale. In response, we used a peer-sourced research network and a highly standardized carbon processing assay to conduct a global-scale field experiment in greater than 1000 river and riparian sites. We found that Earth’s biomes have distinct carbon processing signatures. Slow processing is evident across latitudes, whereas rapid rates are restricted to lower latitudes. Both the mean rate and variability decline with latitude, suggesting temperature constraints …
Wetland Biogeochemical Responses To Predicted Climate Change Scenarios, Angela R. Shaffer
Wetland Biogeochemical Responses To Predicted Climate Change Scenarios, Angela R. Shaffer
Electronic Theses and Dissertations
Wetlands are one of the world's largest known carbon sinks while comprising only a small amount of the Earth's surface. However, the amount of carbon sequestered by wetlands is shrinking as droughts and human disturbance increases. Carbon in wetlands is stored through the contrast of decomposition and sedimentation of organic matter and absorption of CO2 from the atmosphere by soil microbes. Understanding how changing hydrological regimes and increased wildfires will affect wetland soil and microbial processes is important in the face of predicted climate change for future wetland conservation practices. Specifically, I seek to understand the response of southeastern …
Impact Of Seasonal And Host-Related Factors On The Intestinal Microbiome And Cestode Community Of Sorex Cinereus And Sorex Monticola, Katelyn D. Cranmer
Impact Of Seasonal And Host-Related Factors On The Intestinal Microbiome And Cestode Community Of Sorex Cinereus And Sorex Monticola, Katelyn D. Cranmer
Electronic Theses and Dissertations
The intestinal microbiome of mammals plays a significant role in host health and response to environmental stimuli and can include both beneficial native bacteria as well as parasitic worms. In this study, I examined the intestinal cestode and bacterial communities of two closely related species of shrew, Sorex monticola and Sorex cinereus, over a six month period in 2016. Specimens were collected approximately every three weeks from May to October from the Sangre de Cristo Mountains in Cowles, New Mexico. A total of 79 shrews were prepared with the gastrointestinal tracts removed and flash-frozen in liquid nitrogen. An additional …
Forelimb Position Affects Facultative Bipedal Locomotion In Lizards, Chase T. Kinsey, Lance D. Mcbrayer
Forelimb Position Affects Facultative Bipedal Locomotion In Lizards, Chase T. Kinsey, Lance D. Mcbrayer
Department of Biology Faculty Publications
Recent work indicates that bipedal posture in lizards is advantageous during obstacle negotiation. However, little is known about how bipedalism occurs beyond a lizard's acceleratory threshold. Furthermore, no study to date has examined the effects of forelimb position on the body center of mass (BCoM) in the context of bipedalism. This study quantified the frequency of bipedalism when sprinting with versus without an obstacle at 0.8 m from the start of a sprint. Forelimb positions were quantified during bipedal running at the start of a sprint and when crossing an obstacle. Two species with contrasting body forms (and thus different …
Parrots And Palms: Analyzing Data To Determine Best Management Strategies And Sustainable Harvest Levels, James P. Gibbs, J. Michelle Cawthorn, Adriana Bravo, Ana L. Porzecanski
Parrots And Palms: Analyzing Data To Determine Best Management Strategies And Sustainable Harvest Levels, James P. Gibbs, J. Michelle Cawthorn, Adriana Bravo, Ana L. Porzecanski
Department of Biology Faculty Publications
This exercise1 presents a scenario and raw data on a realistic conflict between parrot conservation and palm tree harvest. It requires that students analyze data very comparable to what would be gathered in the field, to: 1) construct a life tables for the palm and parrot, 2) extract vital statistics about both the palm and parrot population from the life tables, 3) estimate maximum sustainable yield for both species, and 4) make a decision about the sustainability of harvest intensity. It illustrates the importance of data analysis skills for conservation.
Riparian Plant Litter Quality Increases With Latitude, Luz Boyero, Manuel A. S. Graça, Alan M. Tonin, Javier Pérez, Andrew J. Swafford, Verónica Ferreira, Andrea Landeira-Dabarca, Markos A. Alexandrou, Mark O. Gessner, Brendan G. Mckie, Ricardo J. Albariño, Leon A. Barmuta, Marcos Castillo, Julián Chará, Eric Chauvet, Jose Checo Colón-Gaud, David Dudgeon, Andrea C. Encalada, Ridcardo Figueroa, Alexander S. Flecker, Tadeusz Fleituch, André Frainer, José F. Gonçalves Jr., Julie E. Helson, Tomoya Iwata, Jude Mathooko, Charles M'Erimba, Catherine M. Pringle, Alonso Ramírez, Christopher M. Swan, Catherine M. Yule, Richard G. Pearson
Riparian Plant Litter Quality Increases With Latitude, Luz Boyero, Manuel A. S. Graça, Alan M. Tonin, Javier Pérez, Andrew J. Swafford, Verónica Ferreira, Andrea Landeira-Dabarca, Markos A. Alexandrou, Mark O. Gessner, Brendan G. Mckie, Ricardo J. Albariño, Leon A. Barmuta, Marcos Castillo, Julián Chará, Eric Chauvet, Jose Checo Colón-Gaud, David Dudgeon, Andrea C. Encalada, Ridcardo Figueroa, Alexander S. Flecker, Tadeusz Fleituch, André Frainer, José F. Gonçalves Jr., Julie E. Helson, Tomoya Iwata, Jude Mathooko, Charles M'Erimba, Catherine M. Pringle, Alonso Ramírez, Christopher M. Swan, Catherine M. Yule, Richard G. Pearson
Department of Biology Faculty Publications
Plant litter represents a major basal resource in streams, where its decomposition is partly regulated by litter traits. Litter-trait variation may determine the latitudinal gradient in decomposition in streams, which is mainly microbial in the tropics and detritivore-mediated at high latitudes. However, this hypothesis remains untested, as we lack information on large-scale trait variation for riparian litter. Variation cannot easily be inferred from existing leaf-trait databases, since nutrient resorption can cause traits of litter and green leaves to diverge. Here we present the first global-scale assessment of riparian litter quality by determining latitudinal variation (spanning 107°) in litter traits (nutrient …
Investigating The Relationship Between Instructors’ Use Of Active Learning Strategies And Students’ Conceptual Understanding And Affective Changes In Introductory Biology: A Comparison Of Two Active-Learning Environments, Lacy M. Cleveland, Jeffrey T. Olimpo, Sue Dechenne-Peters
Investigating The Relationship Between Instructors’ Use Of Active Learning Strategies And Students’ Conceptual Understanding And Affective Changes In Introductory Biology: A Comparison Of Two Active-Learning Environments, Lacy M. Cleveland, Jeffrey T. Olimpo, Sue Dechenne-Peters
Department of Biology Faculty Publications
In response to calls for reform in undergraduate biology education, we conducted research examining how varying active-learning strategies impacted students’ conceptual understanding, attitudes, and motivation in two sections of a large-lecture introductory cell and molecular biology course. Using a quasi-experimental design, we collected quantitative data to compare participants’ conceptual understanding, attitudes, and motivation in the biological sciences across two contexts that employed different active-learning strategies and that were facilitated by unique instructors. Students participated in either graphic organizer/worksheet activities or clicker-based case studies. After controlling for demographic and presemester affective differences, we found that students in both active-learning environments displayed …
The European Eel Nccβ Gene Encodes A Thiazide-Resistant Na-Cl Cotransporter, Erika Moreno, Consuelo Plata, Alejandro Rodríguez-Gama, Eduardo R. Argaiz, Norma Vázquez, Karla Leyva, Carmen Y. Hernández-Carballo, León Islas, Christopher P. Cutler, Diana Pacheco-Alvarez, Adriana Mercado, Raquel Cariño-Cortés, Gerardo Gamba
The European Eel Nccβ Gene Encodes A Thiazide-Resistant Na-Cl Cotransporter, Erika Moreno, Consuelo Plata, Alejandro Rodríguez-Gama, Eduardo R. Argaiz, Norma Vázquez, Karla Leyva, Carmen Y. Hernández-Carballo, León Islas, Christopher P. Cutler, Diana Pacheco-Alvarez, Adriana Mercado, Raquel Cariño-Cortés, Gerardo Gamba
Department of Biology Faculty Publications
The thiazide-sensitive Na-Cl cotransporter (NCC) is the major pathway for salt reabsorption in the mammalian distal convoluted tubule. NCC plays a key role in the regulation of blood pressure. Its inhibition with thiazides constitutes the primary baseline therapy for arterial hypertension. However, the thiazide-binding site in NCC is unknown. Mammals have only one gene encoding for NCC. The eel, however, contains a duplicate gene. NCCα is an ortholog of mammalian NCC and is expressed in the kidney. NCCβ is present in the apical membrane of the rectum. Here we cloned and functionally characterized NCCβ from the European eel. The cRNA …