Digital Commons Network^™

Glare Reduction By Dark Facial Markings And Bills In Birds, Clara Lebow

Electronic Theses and Dissertations

Avian facial plumage, bill coloration, and feather microstructure may serve one or more adaptive functions. Several researchers have proposed that dark eyestripes, bills, and facial masks aid in reducing glare, however, there have been relatively few tests of this hypothesis. Dark facial markings have been shown to have an adaptive glare-reduction function in recent field studies of a few species, but this hypothesis has never been tested in a broad multispecies analysis. It is likely that feather microstructure influences feather brightness and has an effect on the efficacy of glare reduction properties of feathers. I examined the link between dark …

Patterns Of Microbial Diversity And Community Composition In Slot Canyons, Rock Pools, And Other Ephemeral And Perennial Aquatic Habitats, Marley Madsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Microbes are the most diverse life forms on the planet and perform many impor-tant ecological functions. However, despite the abundance, diversity, and ecological importance of microbes they are often overlooked and understudied in many natural systems, including freshwater habitats. This thesis details the first ever investigation of the microbial diversity and community composition within fresh water rock pools and slot canyons of the Colorado Plateau, Utah. The purpose of the study was to determine the relative importance of various microbial community assembly processes. This thesis also includes a meta-analysis of the microbial alpha diversity in other perennial and ephemeral aquatic …

Novel Bayesian Methodology For The Analysis Of Single-Cell Rna Sequencing Data., Michael Sekula

Electronic Theses and Dissertations

With single-cell RNA sequencing (scRNA-seq) technology, researchers are able to gain a better understanding of health and disease through the analysis of gene expression data at the cellular-level; however, scRNA-seq data tend to have high proportions of zero values, increased cell-to-cell variability, and overdispersion due to abnormally large expression counts, which create new statistical problems that need to be addressed. This dissertation includes three research projects that propose Bayesian methodology suitable for scRNA-seq analysis. In the first project, a hurdle model for identifying differentially expressed genes across cell types in scRNA-seq data is presented. This model incorporates a correlated random …

Comparison Of 3d Coral Photogrammetry And Coral Video Transect For Coral Lifeform Analysis Using Low-Cost Underwater Action Camera, Ahmad Zuhairi Bin, Mohd Jinah Muhammad Idzham Helmi Bin, Saad Shahbudin Bin

ASEAN Journal on Science and Technology for Development

This research analysed the use of 3D Coral Photogrammetry (CP) and Coral Video Transect (CVT) images collected from SCUBA divers using a low-cost underwater action camera to examine the coral lifeform. A comparison was made between data sets obtained using both methods on nine transects with different coral lifeform compositions and percentage cover within an area of 4 × 7 m. The comparison of the statistical analysis for CPCe revealed that there were no significant differences (p < 0.05) between CP and CVT photos where dead corals (p = 0.006), sand (p = 0.011), and unknown (p = 0.002) are present. Additionally, the coral value (p = 0.131) between CP and CVT was not significant. CP was capable of producing prominent branching, massive, and plate coral morphology results. This suggests that survey methods using low-cost action cameras for 3D Coral Photogrammetry would yield appropriate results in terms of coral lifeform detection. Hypothetically, by improving camera quality, it will yield a higher accuracy of 3D coral images that are suitable for use in scientific research and management. Other benefits of using CP include the possibilities for future studies with 3D coral surveys using remotely operated vehicles, less field time, and 3D coral seabed information.

Docking Andin Vitromolecular Biology Studies Ofp-Anisidine-Appended 1-Hydroxy-2-Acetonapthanone Schiff Base Lanthanum(Iii) Complexes, V. Sathiyanarayanan, P. Varun Prasath, P. Chandra Sekhar, K. Ravichandran

Open Access archive

A new series of lanthanum(iii) complexes was synthesized using ap-anisidine-appended 1-hydroxy-2-acetonapthanone (3) Schiff base and characterizedviaspectroscopic methods. The ligand was synthesizedviasonication and the crystalline product was characterized using X-ray crystallography. The genotoxicity of the compound was assessed primarily by the bacterial reverse mutation (Ames) test and thein vitromammalian chromosome aberration test; in both cases, the samarium complex5was found to be non-mutagenic. The anti-tumor activity of complexes45, and6was assayed against HeLa tumor cells and screened using the MTT assay. The IC50value of complex5was found to be 34 ± 1.2 μg mL−1and this compound exhibited superior activity towards the cells compared to4and6. …

Correlation Of Undergraduate Courses Aligned With The Future Of Health Industry Studies, Eyman Zaitar

Honors Capstone Projects and Theses

No abstract provided.

Beyond 106: Descendant-Centered Collaboration To Interpret Dakota Archaeological Sites At Macalester's Katharine Ordway Natural History Study Area (Konhsa), Abigail R. Thomsen

Anthropology Honors Projects

This thesis addresses the absence of frameworks for collaborative interpreting Indigenous archaeological sites. I discuss my experience of descendant-centered collaboration with representatives from Dakota communities to create two interpretive signs for Macalester’s Katharine Ordway Natural History Study Area (KONHSA). I worked with Tribal Historic Preservation Officers from Upper Sioux Community, Lower Sioux Indian Community, and Prairie Island Indian Community to determine sign content and design. In this work, I examine the history of the land currently called KONHSA from an archaeological perspective. Then, I discuss the history of archaeology and Cultural Resource Management (CRM) as an oppressive practice, and I …

Non-Uniform Haar Wavelet Method For Solving Singularly Perturbed Differential Difference Equations Of Neuronal Variability, Akmal Raza, Arshad Khan

Applications and Applied Mathematics: An International Journal (AAM)

A non-uniform Haar wavelet method is proposed on specially designed non-uniform grid for the numerical treatment of singularly perturbed differential-difference equations arising in neuronal variability.We convert the delay and shift terms using Taylor series up to second order and then the problem with delay and shift is converted into a new problem without the delay and shift terms. Then it is solved by using non-uniform Haar wavelet. Two test examples have been demonstrated to show the accuracy of the non-uniform Haar wavelet method. The performance of the present method yield more accurate results on increasing the resolution level and converges …

Columbus State University Honors College: Senior Theses, Spring 2020, Tehgan Anguilm, Jessica Barkhouse, Valencia Coleman, Andrea Dorbu, Cortland Ellis, Caitlyn Gallagher, Jenna Gaskins, Ashley Mayer, Abby Grace Moore, Collins Nelson, Joshua Newbend, Timothy Pitts, Chad Reynolds, Jazmin Rush, Anju Shajan, Candice Tate, Persia Tillman, Joanne Youngblood

Senior Theses from the Honors College

This is a collection of senior theses written by honors students at Columbus State University in Spring 2020.

Titles:

- "Recombinant Expression of Preptin Analogs for Alanine Scanning Mutagenesis of Residues 27-29" , by Tehgan Anguilm

- "Laying-Sequence Variation in Yolk Carotenoids of Eastern Bluebirds" , by Jessica Barkhouse,

- "SIMBPM: An Intelligent Business Simulation That Predicts Management Styles" , by Valencia Coleman

- "Approach and Avoidance Coping Humor Motives and Their Relation to Trauma Exposure and Physical Health" , by Andrea Dorbu

- "Staying in the Moment: Acting Methods Through Video for the Novice and Veteran Actor" , by …

Surviving Under The Reign Of El Niño Southern Oscillation: An Analysis Of The Effects Of Extreme El Niño Events On The Oceanographic And Biological Environment Of The Galápagos Islands, Ava Mcilvaine

Independent Study Project (ISP) Collection

El Niño Southern Oscillation (ENSO) is commonly known as the atmospheric and oceanographic powerhouse of the Southern Pacific Ocean. From phytoplankton to apex predators, ENSO controls the stability of species’ populations within this biodiverse ocean environment. El Niño’s 9-15 month alteration of the heat storage in the tropical Pacific drastically shifts the temperature, nutrient, and circulation gradient its marine life is accustomed to. A single degree change in the ocean’s surface layer temperature can have large consequences for marine species, and El Niño is commonly associated with Sea Surface Temperature Anomalies (SSTAs) between 2°- 6° Celsius. The potential danger El …

Climate Change Effects On Volcanoes In The Tropics: A Review Of The Deglaciation Of Antisana And Its Effects On Subsequent Water Streams And Rivers Over 20 Years, Callie C. Rominger

Independent Study Project (ISP) Collection

Located in the Northern end of Ecuador lies the stunning glacier of Antisana which attracts many tourists and whose runoff provides a significant amount of water supply for Quito. Climate change is posing threats to many ecosystems world wide but will have a more substantial impact on the volcanoes in the tropics because they do not have a seasonally altered climate. Small changes in the air temperature can have larger impacts on these areas that are adapted to constant temperatures with seasonal precipitation changes. Climate change, in recent years, had caused an increase in the glacial retreat of the Antisana …

Beyond Nicotine Gateway Hypothesis, Somchai Bovornkitti

Asian Medical Journal and Alternative Medicine

No abstract provided.

Fibration Symmetries Uncover The Building Blocks Of Biological Networks, Flaviano Morone, Ian Leifer, Hernán A. Makse

Publications and Research

A major ambition of systems science is to uncover the building blocks of any biological network to decipher how cellular function emerges from their interactions. Here, we introduce a graph representation of the information flow in these networks as a set of input trees, one for each node, which contains all pathways along which information can be transmitted in the network. In this representation, we find remarkable symmetries in the input trees that deconstruct the network into functional building blocks called fibers. Nodes in a fiber have isomorphic input trees and thus process equivalent dynamics and synchronize their activity. Each …

Space And Defense – Volume Nine – Number One – Spring 2016, Space And Defense Journal

Space and Defense

No abstract provided.

Listeria Monocytogenes Response To Anaerobic Environments, Brandy N. Roberts, Damayanti Chakravarty, J.C. Gardner Iii, Steven C. Ricke, Janet R. Donaldson

Faculty Publications

Listeria monocytogenes is a Gram-positive facultative anaerobic bacterium that is responsible for the disease, listeriosis. It is particularly lethal in pregnant women, the fetus, the elderly and the immunocompromised. The pathogen survives and replicates over a wide range of temperatures (4 to 42 °C), pH, salt and oxygen concentrations. Because it can withstand various environments, L. monocytogenes is a major concern in food processing industries, especially in dairy products and ready-to-eat fruits, vegetables and deli meats. The environment in which the pathogen is exposed can influence the expression of virulence genes. For instance, studies have shown that variations in oxygen …

The Rising Profile Of Sexual Harassment On Campus: How Do Faculty Respond Inside And Outside The Classroom, Scott C. Strother

Seton Hall University Dissertations and Theses (ETDs)

Faculty behavior inside and outside the classroom is one of the many concerns faced by higher education administrators. Inappropriate comments, behavior, or acts engaged in by faculty members have resulted in sexual harassment complaints being filed by students, and in some cases resulted in costly litigation and settlements for some colleges and universities. In the recent news, public figures like actor Bill Cosby and Hollywood director Harvey Weinstein have been openly accused of sexual harassment and/or rape. High publicity matters like these presumably have an influence on awareness of the issue of sexual harassment.

The purpose of this study was …

Tropical Pitcher Plants (Nepenthes) Act As Ecological Filters By Altering Properties Of Their Fluid Microenvironments, Kadeem J. Gilbert, Leonora S. Bittleston, Wenfei Tong, Naomi E. Pierce

Biology Faculty Publications and Presentations

Characteristics of host species can alter how other, interacting species assemble into communities by acting as ecological filters. Pitchers of tropical pitcher plants (Nepenthes) host diverse communities of aquatic arthropods and microbes in nature. This plant genus exhibits considerable interspecific diversity in morphology and physiology; for example, different species can actively control the pH of their pitcher fluids and some species produce viscoelastic fluids. Our study investigated the extent to which Nepenthes species differentially regulate pitcher fluid traits under common garden conditions, and the effects that these trait differences had on their associated communities. Sixteen species of Nepenthes …

04. Chemistry, Southwestern Oklahoma State University

Oklahoma Research Day Abstracts

No abstract provided.

Soil Microbial Communities In Diverse Agroecosystems Exposed To The Herbicide Glyphosate, Ryan M. Kepler, Dietrich J. Epp Schmidt, Stephanie A. Yarwood, Michel A. Cavigelli, Krishna N. Reddy, Stephen O. Duke, Carl A. Bradley, Martin M. Williams, Jude E. Maula

Faculty and Student Publications

© 2020 American Society for Microbiology. Despite glyphosate's wide use for weed control in agriculture, questions remain about the herbicide's effect on soil microbial communities. The existing scientific literature contains conflicting results, from no observable effect of glyphosate to the enrichment of agricultural pathogens such as Fusarium spp. We conducted a comprehensive field-based study to compare the microbial communities on the roots of plants that received a foliar application of glyphosate to adjacent plants that did not. The 2-year study was conducted in Beltsville, MD, and Stoneville, MS, with corn and soybean crops grown in a variety of organic and …

S-Seco-Porphyrazine As A New Member Of The Seco-Porphyrazine Family – Synthesis, Characterization And Photocytotoxicity Against Cancer Cells, Dariusz T. Mlynarczyk, Jaroslaw Piskorz, Lukasz Popenda, Magdalena Stolarska, Wojciech Szczolko, Krystyna Konopka, Stefan Jurga, Lukasz Sobotta, Jadwiga Mielcarek, Nejat Düzgüneş, Tomasz Goslinski

All Dugoni School of Dentistry Faculty Articles

An important subgroup within the porphyrazine (Pz) family constitutes seco-porphyrazines, in the chemical structure of which one pyrrole unit is opened in the oxidative process. So far, there are only limited data on N-seco- and C-seco-Pzs. Here, the synthesis of a novel member of the Pzs seco-family, represented by an S-seco-tribenzoporphyrazine analogue, 22,23-bis(4-(3,5-dibutoxycarbonylphenoxy)butylsulfanyl)tribenzo[b,g,l]-22,23-dioxo-22,23-seco-porphyrazinato magnesium(II), is reported, with moderate 34% yield. The new derivative was characterized using NMR spectroscopy, UV–Vis spectroscopy, and mass spectrometry. In the photochemical study performed following the indirect chemical method with 1,3-diphenylisobenzofuran, S-seco-Pz revealed a high singlet oxygen quantum yield of 0.27 in DMF. Potential photocytotoxicity of …

Spatial Contrasts In Hepatic And Biliary Pahs In Tilefish (Lopholatilus Chamaeleonticeps) Throughout The Gulf Of Mexico, With Comparison To The Northwest Atlantic, Susan M. Snyder, Jill A. Olin, Erin Pulster, Steven Murawski

C-IMAGE Publications

A multinational demersal longline survey was conducted on the Gulf of Mexico continental shelf over the years 2015 and 2016 to generate a Gulf-wide baseline of polycyclic aromatic hydrocarbon (PAH) concentrations in demersal fishes. Tilefish (Lopholatilus chamaeleonticeps) were sampled in all regions of the Gulf of Mexico for biometrics, bile, and liver. Tilefish liver was also obtained from surveys in the northwest Atlantic Ocean for comparison. Liver tissues (n = 305) were analyzed for PAHs and select alkylated homologs using QuEChERS extractions and gas chromatography tandem mass spectrometry. Bile samples (n = 225) were analyzed for …

Some Metal Ions Complexes Derived From Schiff Base Ligand With Anthranillic Acid: Preparation, Spectroscopic And Biological Studies, Salam K. Sahib, Lekaa K. Abdul Karem

Baghdad Science Journal

This search includes the preparation of Schiff base ligand (SB) from condensation primary amine with vanillin. The new ligand was diagnosed by spectroscopic methods as Mass, NMR, CHN and FTIR. Ligand complexes were mixed from new (SB) and Anthranillic acid (A) with five metal (II) chlorides. The preparation and diagnosis were conducted by FTIR, CHN, UV-visible, molar conductivity, atomic absorption and magnetic moment. The octahedral geometrical shape of the complexes was proposed. The ligands and their new complexes were screened with two different types of bacteria.

Investigation Of Sectionalized Pyrolysis Behavior Of Heated Cigarette Tobacco Materials, Zhu Gui-Hua, Liu Chun-Bo, Yang Chen, Liu Zhe, Liu Zhi-Hua, Jiang Li-Hong, Shen Qin-Peng, Si Xiao-Xi, Zhang Xin, Yang Ji

Food and Machinery

The thermogravimetry (TG) and pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) were used to analyze the thermal behavior of three tobacco materials, including typical center heated (A), circumferential heated (B) and traditional cigarette (C). Results showed as follows. ① The thermal mass loss of the two types of heated tobacco materials could be divided into 3 stages, and the main thermal mass loss stage was 242~350 ℃; the traditional cigarette tobacco material thermal mass loss could be divided into 4 stages, and the main mass loss stage was 381~534 ℃. Compared with traditional cigarettes, the mass loss peaks of heated cigarettes were wider …

Preparation, Characterization And Biological Activity Of Novel Schiff Base Complexes Based On La, Er And Yb Metal Ions, Hoda Ahmed, Walaa H. Mahmoud, Islam M. Al-Akraa Dr, Gehad G. Mohamed

Chemical Engineering

The tridentate [HL, (4-[(2-(2-quinolinoimino)-3, 5-dibromobenzyl) amino] cyclohexanol)]Schiff base ligand was prepared from the condensation reaction of 2-quinoline carbaldehyde with the drug ambroxol. The prepared HL ligand was further used in the preparation of some new complexes via the reaction with La(III), Er(III) and Yb(III) metal ions. The geometry of the prepared complexes was proposed from elemental analysis, FT-IR, 1H NMR, thermal and magnetic susceptibility. 1H NMR showed that the three nitrogen atoms of the ligand were responsible for the complex formation. The thermal analysis technique provided a clear prospect about the decomposition steps of the Schiff base ligand and its …

Saving The Vicuña: The Political, Biophysical, And Cultural History Of Wild Animal Conservation In Peru, 1964–2000, Emily Wakild

History Faculty Publications and Presentations

This article examines national efforts to protect wildlife in the twentieth century. Its focus is the vicuña, a small llama-like species native to the Andes, which nearly went extinct due to the high economic value of its wool. Instead, the Peruvian national government—despite significant regime shifts—intervened to put in place and then perpetuate a series of conservation measures, including trade restrictions and a territorial reserve, that protected the population and allowed it to rebound. Using a combination of cultural, economic, political, and biological methods to understand the animals and people concerned about them, this article argues that conservation reoriented relationships …

Synthesis And Antitumor Activity Of Potentially Tumor Targeting Analogues Of The Tetrahydrofuran Containing Acetogenins, Patricia Gonzalez Periche

Dissertations, Theses, and Capstone Projects

The tetrahydrofuran containing acetogenins (THF-ACGs) are a naturally occurring class of compounds with potent toxicity against a broad range of tumors, including multidrug resistant (MDR) strains. However, the equally high toxicity to normal cells presents a hurdle for their clinical advancement. This study entails synthetic and tumor targeting strategies that are relevant to their therapeutic development.

Chapter 1 presents a review of the synthesis and biological activity of the THF-ACGs. Chapter 2 covers a modular approach for the synthesis of libraries of THF-ACGs. This strategy is illustrated in the synthesis of C-10 epimers of 4-deoxyannonomontacin (4-DAN), one of the more …

Metabolic Dysregulation In The Atp7b-/- Wilson's Disease Mouse Model, Clavia Ruth Wooton-Kee, Matthew Robertson, Ying Zhou, Bingning Dong, Zhen Sun, Kang Ho Kim, Hailan Liu, Yong Xu, Nagireddy Putluri, Pradip Saha, Cristian Coarfa, David D Moore, Alli M Nuotio-Antar

Faculty, Staff and Students Publications

Inactivating mutations in the copper transporter Atp7b result in Wilson’s disease. The Atp7b−/− mouse develops hallmarks of Wilson’s disease. The activity of several nuclear receptors decreased in Atp7b−/− mice, and nuclear receptors are critical for maintaining metabolic homeostasis. Therefore, we anticipated that Atp7b−/− mice would exhibit altered progression of diet-induced obesity, fatty liver, and insulin resistance. Following 10 wk on a chow or Western-type diet (40% kcal fat), parameters of glucose and lipid homeostasis were measured. Hepatic metabolites were measured by liquid chromatography–mass spectrometry and correlated with transcriptomic data. Atp7b−/− mice fed a chow diet presented …

The Bioethical Significance Of “The Origin Of Man’S Ethical Behavior” (October 1941, Unpublished) By Ernest Everett Just And Hedwig Anna Schnetzler Just, Theodore Walker Jr.

Journal of the South Carolina Academy of Science

Abstract –

E. E. Just (1883-1941) is an acknowledged “pioneer” in cell biology, and he is perhaps the pioneer in study of egg cell fertilization. Here we discover that Just also made pioneering contributions to general biology and evolutionary bioethics.

Within Just’s published contributions to observational cell biology, there are substantial fragments of his theory of ethical behavior, a theory with roots in cell biology. In addition to such previously available fragments, Just’s fully developed theory is now available. This recently discovered unpublished book-length manuscript argues for the biological origins of ethical behavior (evolving from cells to humans, within a …

Classic Article: On The Oxidation Of Organic Matter In Marine Sediments By Bacteria, Selman A. Waksman, Margaret Hotchkiss

Journal of Marine Research

The question as to whether the organic matter in the sea bottom is inert or is available as a nutrient for the bottom fauna and bottom-inhabiting bacteria is a problem of special interest in the cycle of life in the sea. A number of marine animals, making up the benthos or the bottom fauna, must depend upon this organic matter for their nutrition while the sea bottom also harbors an extensive bacterial population which require the energy to be derived from various nutrient elements for cell synthesis and respiration...

Sars-Cov-2 Isolation And Propagation From Turkish Covid-19 Patients, Ci̇han Taştan, Bulut Yurtsever, Gözde Karakuş, Derya Di̇lek Kançaği, Sevda Demi̇r, Selen Abanuz, Utku Seyi̇s, Mülazi̇m Yildirim, Recai̇ Kuzay, Ömer Eli̇bol, Serap Arbak, Merve Açikel Elmas, Selçuk Bi̇rdoğan, Osman Uğur Sezerman, Ayşe Sesi̇n Kocagöz

Turkish Journal of Biology

The novel coronavirus pneumonia, which was named later as coronavirus disease 2019 (COVID-19), is caused by the severe acute respiratory syndrome coronavirus 2, namely SARS-CoV-2. It is a positive-strand RNA virus that is the seventh coronavirus known to infect humans. The COVID-19 outbreak presents enormous challenges for global health behind the pandemic outbreak. The first diagnosed patient in Turkey has been reported by the Republic of Turkey Ministry of Health on March 11, 2020. In May, over 150,000 cases in Turkey, and 5.5 million cases around the world have been declared. Due to the urgent need for a vaccine and …