Digital Commons Network^™

Structure Characterization Of Cellulose Nanofibers/Microfibrils, Ying Su

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Cellulose nascent crystals or cellulose microfibrils, extracted from biomass through TEMPO-mediated oxidation, are low cost, biocompatible and high performance materials that have found wide applications in various fields, including water purification, polymer nanocomposites, biosensors, and tissue engineering. However, several fundamental aspects of the structure characterization of these cellulose nascent crystals and microfibrils have still been ambiguous. The current study uses synchrotron small-angle X-ray scattering (SAXS) to characterize the structure of cellulose nanofibers (and their aggregates) and corresponding dispersed microfibrils from various sources (e.g. wood, bamboo, cotton, jute, etc.) in aqueous suspensions. It was revealed that typical cellulose nanofibers extracted from …

Anti-Backbiting In Alternating Ring-Opening Metathesis Polymerization And Applications Of Alternating Copolymers, Li Tan

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Linear alternating copolymers have potential use as tools in the biochemical and material sciences. Cyclobutene-1-carboxylate esters and cyclohexene participate in an alternating ring-opening metathesis polymerization (AROMP) [Song, A.; Parker, K. A.; Sampson, N. S. J. Am. Chem. Soc. 2009, 131, 3444]. However, the molecular weight homogeneity of the copolymers resulting from the 1-cyclobutene ester/cyclohexene pair is limited by " cross metathesis" reactions that lead to undesired polymer dispersities and cyclic polymers. Therefore, strategies to inhibit intramolecular cross metathesis and to obtain linear alternating copolymers were undertaken. We set out to improve the AROMP process by screening reaction conditions to inhibit …

Thin-Film Nanofibrous Composite Membranes By Interfacial Polymerization For Water Purification, Xiao Wang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

A thin-film nanofibrous composite (TFNC) membrane system for nanofiltration (NF) with substrates entirely fabricated by fibers was prepared. Water-channel structure was formed at the interface between the polymer barrier layer and the ultrafine cellulose nanofibers (CNs) in the supporting layer, demonstrating the advantages of using a CN substrate over other conventional ones. Both manual coating and slot-die coating were applied for membrane preparations. The resulting membrane performance showed that the slot-die coating method could produce better performance membranes than the manual coating method. With the optimized formulations and coating conditions, TFNC NF membranes coated by the slot-die method had a …

Abnormal Emotional Reactivity And Reward Sensitivity In Major Depressive Disorder: Evidence From Event-Related Potentials, Daniel Justin Foti

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Major depressive disorder (MDD) is associated with abnormal neural activity elicited by affective stimuli and reward, yet results have been inconsistent across studies and have at times been contradictory. Discrepancies may be due in part to the wide range of laboratory paradigms and stimuli that have been used. The current study examined this issue by recording event-related potentials across a battery of four tasks within a single MDD sample. First, using two emotional reactivity tasks, the moderating effect of the personal relevance of stimuli was examined; normative and idiographic affective stimuli were contrasted. Second, using two environmental feedback tasks, monetary …

Morphology And Function Of The Ophidian Vertebral Column: Implications For The Paleobiology Of Fossil Snakes, Jacob Mccartney

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Snakes are a speciose, ecologically diverse clade with an evolutionary history spanning the past 100 million years. This diversity makes them an excellent group for study, particularly given their importance in extant faunas. However, the fossil record of snakes is primarily composed of isolated vertebrae, owing to the great number of these elements and loosely articulated nature of the skull. This means that any study of the paleobiology of extinct snakes must rest primarily on vertebrae. The purpose of this dissertation is to add to the current knowledge of snake vertebral ecomorphology, and to begin to extend that understanding to …

Widowhood In Two Igbo Communities Of Nigeria: A Contextual Manipulation Of Patriarchy, Jerome Madumelu

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

bold,318 pages

Faults Not Forgotten, Gina Altadonna

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

My work stems from my own neuroses, obsessions, and insecurities, which reflect the stark and disturbing truths of who I am. The question does not lie in what I see in the mirror, but rather in what society dictates should be there. Using animals to illustrate these echoes, I attempt to rattle the foundations of the normative. The animals become a personification of my confrontations with " girl world policing." Commenting on the impacts of these experiences and their effects on my past, current, and future relationships, I hope to alleviate the internal struggle of finding myself. | 40 pages

Unhomely, Catherine Katsafouros

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The objective of this thesis is to examine the ontology of my artwork and contextualize it within the framework of trauma, horror and feminism. My artwork focuses on the effects of internalized violence on cognitive and bodily processes, which manifest as haunting and repetition. In my artistic production, I use the unconscious methodologically, and I rely on pattern emergence and analysis to refine my works conceptually. In this thesis: I relate visual and conceptual aspects of my MFA Thesis Exhibition artworks to the traits of trauma most relevant to my work, namely haunting and repetition; I outline the patterns that …

"Just Look At Her!": Sporting Bodies As Athletic Resistance And The Limits Of Sport Norms In The Case Of Caster Semenya, Shane Miller

Strategic Communication Studies Faculty Publications

Using the American sport media’s treatment of South African runner Caster Semenya, this article explores how in the course of defending Caster Semenya the American sport media presented a rigorous challenge to traditional conceptions of sex and gender. Yet these rhetorical efforts to deconstruct sex and gender binaries were undermined by the specific ways in which Semenya’s dual performances—athletic and gender—were visually depicted. A close reading and analysis of US sports media coverage of Caster Semenya provide an opportunity to explore the ways in which the norms of sport may foster progressive treatment of athletes whose genders do not fit …

Effectiveness Of Mitigation Measures To Reduce Interactions Between Commercial Fishing Gear And Whales, Jason R. How, D Coughran, J Smith, M Double, J Harrison, J Mcmath, B Hebiton, Ainslie Maree Denham

Fisheries Research Reports

Effectiveness of mitigation measures to reduce interactions between commercial fishing gear and whales.

Objectives:

1. Start to collect additional information required to determine the spatial and temporal extent of migrating whales and how this overlaps with commercial fishing gear.

2. Examine the effectiveness of potential gear modifications to the float rigs of fishing pots/traps to reduce their likelihood of entangling whales.

Hippocalcin Response To Calcium: Do Conserved Tryptophans – W30 Or W103 – Matter?, Sunkesula K. Sagar

Graduate School of Biomedical Sciences Theses and Dissertations

Changes in intracellular calcium levels play a very important role in cell signaling, in turn, affecting neuronal functions such as memory, learning and cell death. A class of proteins called Neuronal Calcium Sensor (NCS) proteins serves to modulate the functioning of the neuronal cells in response to changes in calcium levels, and prevent neuronal apoptosis. Structurally, all NCS proteins have 4 calcium-binding EF hand motifs, although EF1 does not bind to calcium in many members. All NCS proteins have an acyl modification at the N- terminus – where a myristoyl group is added post-translationally. Hippocalcin (HPCA) is an NCS protein, …

Conformational Dynamics Of Dnaa Protein Of Bacillus Anthracis In The Initiation Of Dna Replication: A Fluorescence Resonance Energy Transfer Study, Meera J. Patel

Graduate School of Biomedical Sciences Theses and Dissertations

A precursor of the origin recognition complex proteins in eukaryotes, the DnaA protein, a single-subunit protein found in all prokaryotes, p1ays a significant role in the initiation of DNA replication. The DnaA protein in Gram-negative Escherichia coli (DnaA_EC) identifies, binds and activates specific DNA sequences at the origin of replication, oriC, initiating the duplication of the prokaryotic genome. Using DnaA_EC as a guide, we selected the full-length form of DnaA from Gram-positive Bacillus anthracis (DnaA_BA) as our model for studying. We have cloned, mutated, expressed and purified large quantities of DnaA_BA protein due to …

A Parallel Algorithm For Compression Of Big Next-Generation Sequencing Datasets, Sandino N. Vargas Perez, Fahad Saeed

Parallel Computing and Data Science Lab Technical Reports

With the advent of high-throughput next-generation sequencing (NGS) techniques, the amount of data being generated represents challenges including storage, analysis and transport of huge datasets. One solution to storage and transmission of data is compression using specialized compression algorithms. However, these specialized algorithms suffer from poor scalability with increasing size of the datasets and best available solutions can take hours to compress gigabytes of data. In this paper we introduce paraDSRC, a parallel implementation of DSRC algorithm using a message passing model that presents reduction of the compression time complexity by a factor of O(1/p ). Our experimental results show …

Shark Bay Crab Managed Fishery Draft Management Plan 2015, Department Of Fisheries

Fisheries Management Papers

No abstract provided.

Chlorophyll Synthase Under Epigenetic Surveillance Is Critical For Vitamin E Synthesis, And Altered Expression Affects Tocopherol Levels In Arabidopsis, Chunyu Zhang, Wei Zhang, Guodong Ren, Denli Li, Rebecca E. Cahoon, Ming Chen, Yongming Zhou, Bin Yu, Edgar B. Cahoon

Center for Plant Science Innovation: Faculty Publications

Chlorophyll synthase catalyzes the final step in chlorophyll biosynthesis: the esterification of chlorophyllide with either geranylgeranyl diphosphate or phytyl diphosphate (PDP). Recent studies have pointed to the involvement of chlorophyll-linked reduction of geranylgeranyl by geranylgeranyl reductase as a major pathway for the synthesis of the PDP precursor of tocopherols. This indirect pathway of PDP synthesis suggests a key role of chlorophyll synthase in tocopherol production to generate the geranylgeranyl-chlorophyll substrate for geranylgeranyl reductase. In this study, contributions of chlorophyll synthase to tocopherol formation in Arabidopsis (Arabidopsis thaliana) were explored by disrupting and altering expression of the corresponding gene …

The Non-Native Plant Rosa Multifl Ora Expresses Shade Avoidance Traits Under Low Light Availability, Rebecca E. Drenovsky, Daniel M. Dlugos, Hillary Collins, Elise M. Bartelme

Biology

PREMISE OF THE STUDY: Shade tolerance is a key trait promoting invasive plant performance in forest interiors. Rosa multifl ora is a problematic invasive shrub in the northeastern United States, occurring in edge habitats and encroaching into forests. Our objective was to evaluate the shade tolerance of R. multifl ora to assess how ecophysiological traits may facilitate its spread into forest interiors. METHODS: In the fi eld, we documented shrub and seed bank density, fecundity, phenology, and seasonal photosynthetic rates of R. multifl ora in contrasting light environments. In the greenhouse, we exposed seedlings to simulated canopy treatments by altering …

Isu Today - August 18, 2015, Indiana State University, Communications And Marketing

University Announcements - ISU Today

No abstract provided.

Isu Today - August 31, 2015, Indiana State University, Communications And Marketing

University Announcements - ISU Today

No abstract provided.

Riparian Vegetation, Colorado River, And Climate: Five Decades Of Spatiotemporal Dynamics In The Grand Canyon With River Regulation, Joel B. Sankey, Barbara Ralston, Paul E. Grams, John C. Schmidt, Laura E. Cagney

Watershed Sciences Faculty Publications

Documentation of the interacting effects of river regulation and climate on riparian vegetation has typically been limited to small segments of rivers or focused on individual plant species. We examine spatiotemporal variability in riparian vegetation for the Colorado River in Grand Canyon relative to river regulation and climate, over the five decades since completion of the upstream Glen Canyon Dam in 1963. Long-term changes along this highly modified, large segment of the river provide insights for management of similar riparian ecosystems around the world. We analyze vegetation extent based on maps and imagery from eight dates between 1965 and 2009, …

Redefining Disease Emergence To Improve Prioritization And Macro-Ecological Analyses, Samantha R. Rosenthal, Richard S. Ostfeld, Stephen T. Mcgarvey, Mark N. Lurie, Katherine F. Smith

Health & Wellness Department Faculty Publications and Research

No abstract provided.

Lindenwood University New Academic Appointments,, Lindenwood University

New Faculty Booklets

No abstract provided.

School Psychologists’ Training And Knowledge Of Tourette Syndrome, Leticia Cornejo

Educational Studies Dissertations

A web-based survey was conducted that included 97 practicing school psychologists in California. The results from the survey indicated that the majority (88%) of respondents were knowledgeable about Tourette Syndrome. Many respondents (28%) had never worked with a student with Tourette’s, 20% had at least one case, and 52% indicated that they had worked with more than two cases in their careers as school psychologists. The majority of respondents indicated that their school psychology program did not adequately train them to assess or counsel students with Tourette’s. The majority of participants also did not feel confident to work with students …

Research & Strategic Partnerships: Quarterly Review, Volume 2, Issue 4, Portland State University. Research & Strategic Partnerships

Portland State Research Magazine

The profiles in this issue highlight the many ways PSU researchers are helping to make Portland and other cities greener, more livable, and smarter. Several of the projects, including ones dealing with the urban heat island, green infrastructure, the food economy, air quality, and transportation, are funded in part by the Portland Climate Action Collaborative, a path-breaking program through which PSU faculty and students work on problems prioritized by Portland’s Bureau of Planning and Sustainability. The Seattle-based Bullitt Foundation and PSU’s Institute for Sustainable Solutions jointly fund the Collaborative.

A few of the stories also describe how PSU faculty and …

Estimating Bighorn Sheep (Ovis Canadensis) Abundance Using Noninvasive Sampling At A Mineral Lick Within A National Park Wilderness Area, Kathryn A. Schoenecker, Mary Kay Watry, Laura E. Ellison, Michael K. Schwartz, Gordon Luikart

Biological Sciences Faculty Publications

Conservation of species requires accurate population estimates. We used genetic markers from feces to determine bighorn sheep abundance for a herd that was hypothesized to be declining and in need of population status monitoring. We sampled from a small but accessible portion of the population's range where animals natural congregate at a natural mineral lick to test whether we could accurately estimate population size by sampling from an area where animals concentrate. We used mark-recapture analysis to derive population estimates, and compared estimates from this smaller spatial sampling to estimates from sampling of the entire bighorn sheep range. We found …

Lack Of Artemisinin Resistance In Plasmodium Falciparum In Uganda Based On Parasitological And Molecular Assays, Roland A. Cooper, Melissa D. Conrad, Quentin D. Watson, Stephanie J. Huezo, Harriet Ninsiima, Patrick Tumwebaze, Samuel L. Nsobya, Philip J. Rosenthal

Collected Faculty Scholarship

We evaluated markers of artemisinin resistance in Plasmodium falciparum isolated in Kampala in 2014. By standard in vitro assays, all isolates were highly sensitive to dihydroartemisinin (DHA). By the ring-stage survival assay, after a 6-h DHA pulse, parasitemia was undetectable in 40 of 43 cultures at 72 h. Two of 53 isolates had nonsynonymous K13-propeller gene polymorphisms but did not have the mutations associated with resistance in Asia. Thus, we did not see evidence for artemisinin resistance in Uganda.

Contrasting Styles In Cognition And Behaviour In Bumblebees And Honeybees., David F Sherry, Caroline G Strang

Psychology Publications

Bumblebees and honeybees have been the subjects of a great deal of recent research in animal cognition. Many of the major topics in cognition, including memory, attention, concept learning, numerosity, spatial cognition, timing, social learning, and metacognition have been examined in bumblebees, honeybees, or both. Although bumblebees and honeybees are very closely related, they also differ in important ways, including social organization, development, and foraging behaviour. We examine whether differences between bumblebees and honeybees in cognitive processes are related to differences in their natural history and behaviour. There are differences in some cognitive traits, such as serial reversal learning and …

Slc Transporters As Therapeutic Targets: Emerging Opportunities, Lawrence Lin, Sook Wah Yee, Richard B. Kim, Kathleen M. Giacomini

Paediatrics Publications

Solute carrier (SLC) transporters-a family of more than 300 membrane-bound proteins that facilitate the transport of a wide array of substrates across biological membranes-have important roles in physiological processes ranging from the cellular uptake of nutrients to the absorption of drugs and other xenobiotics. Several classes of marketed drugs target well-known SLC transporters, such as neurotransmitter transporters, and human genetic studies have provided powerful insight into the roles of more-recently characterized SLC transporters in both rare and common diseases, indicating a wealth of new therapeutic opportunities. This Review summarizes knowledge on the roles of SLC transporters in human disease, describes …

Philosopher's Stone: The Faustian Geist Of Development, Salikyu Sangtam

Dissertations

The present study juxtaposes scientific rationality with polyphonic rationality in respect to societal development. This is done to illuminate how scientific rationality provides a narrow and truncated view of development. In order to explicate the exclusion of polyphonic rationalities/knowledges in favor of scientific rationality, several development scholarships are examined along with an episode of developmental scheme and two episodes of development programs. This is done to expound (note: ‘→’ = influences) how scientific rationality → scholarships → organizational/institutional schemes, such as the MDGs → actual applications of development schemes, such as transmigration and compulsory villagization. The present inquest, …

Dynamics Of Anisotropic Gold Nanopartilces In Synthetic And Biopolymer Solutions, Sharmine Alam

Wayne State University Dissertations

Soft matter is a subfield of condensed matter physics including systems such as polymers, colloids, amphiphiles and liquid crystals. Understanding their interaction and dynamics is essential for many interdisciplinary fields of study as well as important for technological advancements. We used gold nanorods (AuNRs) to investigate the length-scale dependent dynamics in semidilute polymer solutions, their conjugation and interaction with a protein bovine serum albumin (BSA), and the effect of shape anisotropy on the dynamics within a crowded solution of spheres. Multiphoton fluctuation correlation spectroscopy (MP-FCS) technique was used to investigate the translation and rotational diffusion of AuNRs. For polymer solutions, …

Contact Point, Arthur A. Dugoni School Of Dentistry

Contact Point

No abstract provided.