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Articles 3931 - 3960 of 7325
Full-Text Articles in Entire DC Network
Optical Measurement Of Environmental Uranium Using Porous Silica Materials, Chien-Cheng Chen
Optical Measurement Of Environmental Uranium Using Porous Silica Materials, Chien-Cheng Chen
Theses and Dissertations
The focus of this research is on the optical measurement of uranyl in a solid matrix using fluorescence spectroscopy. Nanoporous silica-based materials were used to extract uranyl from contaminated soil and to enhance the fluorescence intensity and lifetime. The fluorescence lifetime and intensity of uranyl ions adsorbed on porous silica-based materials of varying pore size was measured as a function of pH and in the presence of fluoride. The feasibility of uranyl fluorescence detection on the top of soil by silica gel is carried out by four types of natural soil. The results show that the uranyl fluorescence intensity can …
Characterization Of Stabilized Palladium Nanocatalysts, Meghann Broderick
Characterization Of Stabilized Palladium Nanocatalysts, Meghann Broderick
Theses and Dissertations
Metal nanoparticles have received much interest for their application in catalysis due to high surface-to-volume ratios resulting in more available active sites. Ideally these catalysts are heterogeneous and allow for facile separation from the catalytic reaction mixture making them ideal for industrial application. Dispersed metal nanoparticles are explored due to their high reactivity in solution and are stabilized by surfactants and polymers. However, it is difficult to determine whether or not a catalyst is truly heterogeneous as a certain degree of leaching from the metal nanoparticle is inevitable. Determining the mechanisms involved in nanocatalysis is also a challenge. In this …
Role Of Capsule In The Interaction Of Porphyromonas Gingivalis With Host, Amrita Singh
Role Of Capsule In The Interaction Of Porphyromonas Gingivalis With Host, Amrita Singh
Theses and Dissertations
Periodontal disease is a chronic oral disease that is triggered by bacteria. One of these bacteria is Porphyromonas gingivalis. Some strains of P. gingivalis produce capsule, however, so far the role of capsule in the interactions with host cells in P. gingivalis is not well understood. Here, we investigated the contribution of capsule to triggering host response as well as its protective role on bacterial internalization by host cells with subsequent killing. qRT-PCR analysis showed more upregulation of expression of various groups of genes in macrophages challenged with the non-capsulated strain than in those challenged with the capsulated one with …
[2010-05-21] May 21, 2010 Meeting Of The Board Of Visitors Of Virginia Commonwealth University, Virginia Commonwealth University. Board Of Visitors
[2010-05-21] May 21, 2010 Meeting Of The Board Of Visitors Of Virginia Commonwealth University, Virginia Commonwealth University. Board Of Visitors
VCU Board of Visitors Minutes
Official minutes of the VCU Board of Visitors and its Executive Committee.
[2010-05-20] Meeting Of The External Relations Committee, Virginia Commonwealth University. Board Of Visitors
[2010-05-20] Meeting Of The External Relations Committee, Virginia Commonwealth University. Board Of Visitors
VCU Board of Visitors Minutes
Official minutes of the VCU Board of Visitors and its Executive Committee.
[2010-05-20] Meeting Of The Board Of Visitors Of Virginia Commonwealth University, Virginia Commonwealth University. Board Of Visitors
[2010-05-20] Meeting Of The Board Of Visitors Of Virginia Commonwealth University, Virginia Commonwealth University. Board Of Visitors
VCU Board of Visitors Minutes
Official minutes of the VCU Board of Visitors and its Executive Committee.
Graphic Design As Projection, Bret Hansen
Graphic Design As Projection, Bret Hansen
Theses and Dissertations
I imagined a world where designing is projecting and where the entire design field is called projection. My research into what it means to be a projector culminates in a participatory creative project that embodies concepts of projection taken from a range of disparate subjects.
Understanding Design, Joshua Reese
Understanding Design, Joshua Reese
Theses and Dissertations
Somewhere along the way, I found that graphic design in professional practice was becoming synonymous with form and style, and losing its connection with concept and audience. I’m trying to find a way back.
An Indecent Obsession, Aaron Mcintosh
An Indecent Obsession, Aaron Mcintosh
Theses and Dissertations
The title of my thesis is appropriately borrowed from a romance novel title, as my work proposes to mine the content, design and culture of romance novels and other erotic texts in order to excavate my own queer romance narrative. The body of work includes large-scale drawings of “stand-in boyfriends” stolen from romance novel covers, pieced fabric text works based on the titles of erotic texts, and a couch covered in erotic reading material. Drawing attention to the ubiquity of heterosexualized images and texts by deconstructing them, my work critically questions larger social constructions of normality and deviance, pleasure and …
Visualizing Cultural Impermanence Through Entropic Design, Clifford Meena Khalili
Visualizing Cultural Impermanence Through Entropic Design, Clifford Meena Khalili
Theses and Dissertations
Entropy is a process of gradual decline as a system loses the strength to maintain itself. It begins with disorder and results in complete transformation. As a multi-cultural American, it has been my experience that the maintenance of my Iranian heritage parallels this concept. A method of visual communication that incorporates entropy is able to express notions of impermanence, disorder and transformation. This project is focused on employing entropy in the process of design and image making by using the transformation of my cultural identity as primary content.
Typography: From Internal Conflict To External Content, Ernest F. Bernhardi Iii
Typography: From Internal Conflict To External Content, Ernest F. Bernhardi Iii
Theses and Dissertations
This body of work represents a celebration and pursuit of realizing an alternative language, one capable of expressing internal conflict through process and response to external typographic form and content.
Awesome, Hannah Walsh
Awesome, Hannah Walsh
Theses and Dissertations
Opinions about Linguistics and Phonetics extrapolated to think about art and object-making, followed by an exposition of titles of recent work, including discussions about: stunting in All Star Cheerleading, rainbows, offset halo patterns, the common corn disease Crazy Top, failure, humility and the profound.
Eighteen Hundred And Froze To Death, Cognets Nicholas Des
Eighteen Hundred And Froze To Death, Cognets Nicholas Des
Theses and Dissertations
Essay to accompany MFA thesis exhibition for the Department of Sculpture and Extended Media.
Eternal September, Benjamin Jurgensen
Eternal September, Benjamin Jurgensen
Theses and Dissertations
A series of digitally inflected texts – September that never ends, some French belles, 1950/1986/1996, Ted Turner, being SO FUCKING FUTURE, The Gilmore Girls, Fic, FanFic, Sapphic, ctrl-c/v, “falsehood”, memes, Robert Gober, INTP, thought control, a “line of flight”, speed, and light refracting on all of it
Lip Profile Preferences Of Asian Americans, Hung Quoc Lu
Lip Profile Preferences Of Asian Americans, Hung Quoc Lu
Theses and Dissertations
The aim of this study was to evaluate how Asians, non-Asians, and orthodontists in America view esthetic soft tissue Asian lip profiles. The null hypothesis was that there was no difference in the perception of lip profile esthetics of Asian patients between Asian laypersons, non-Asians laypersons, and orthodontists. A survey was constructed using the profile photographs of one adult male and one adult female Asian American patient taken from the VCU Orthodontics Clinic records. Using Dolphin Imaging 3D, the original photographs were digitally altered. The lips in each photograph were moved in increments forward and backwards to produce 5 images …
The Effect Of Racial Socialization On Parental Stress In A Sample Of African American Parents, Thompson Remy Jones
The Effect Of Racial Socialization On Parental Stress In A Sample Of African American Parents, Thompson Remy Jones
Theses and Dissertations
The typical duties of parenting may be multiplied when they must be performed within very demanding situations and with limited personal and physical resources. African American families may also be subject to race-related challenges that further complicate child rearing. In an effort to combat the effect of imminent racism, some African American parents have sought to racially socialize their children. Within the racial socialization literature, it has been determined that racially socializing one’s children has positive effects for those children, however, there is some ambiguity regarding the way it is best done. Although racist acts cannot be predicted nor avoided, …
Spinal Cord Injury: Exploring The Histology Of Electrospun Implants In Vivo, Charles Lin
Spinal Cord Injury: Exploring The Histology Of Electrospun Implants In Vivo, Charles Lin
Theses and Dissertations
Spinal cord injury results in loss of motor function and sensory perception. A myriad of obstacles prevent axonal regeneration and ultimately functional recovery in those afflicted with spinal cord injury. Combinatorial strategies addressing many of these obstacles simultaneously have shown promising results. Laboratories investigating contusional spinal cord injuries must overcome the formation of a fluid filled cyst, a physical gap that axons must traverse, at the injury epicenter. To fill the cyst, our lab has generated a 3-D electrospun matrix that is capable of directing neurite outgrowth, delivering neurotrophic support, and reducing the activity of neuroinhibitory compounds. These electrospun matrices …
Master Of Public Health Research Project: Unmarried Women In Ghana, Africa: Predictors Of Condom Use- An Analysis Of The 2008 Ghana Demographic And Health Survey/Questionnaire Database, Emilie Hill
Theses and Dissertations
Background: Many factors affect whether women will insist that their sexual partners use a condom. This research project will identify some of the predictors of condom use among unmarried women in Ghana, Africa. Methods: This research project evaluated data from the 2008 DHS of women in Ghana, Africa for predictors of condom use among unmarried women. A total of 4,916 women completed the surveys. Of these, 1,966 women were unmarried. The research project employed multiple logistic regression analysis to determine condom use predictors at the time of the last sexual encounter for these 1,966 unmarried women. Results: Women with a …
A Qualitative Analysis Of Messages Conveyed In Parent-Adolescent Communication About Substance Use: Variations Along Dimensions Of Maternal And Familial History Of Substance Abuse, Nikola Zaharakis
Theses and Dissertations
Little research has examined the content of parent-adolescent communication about substance use and variables that may influence it. Using a grounded theory approach for secondary data analysis, qualitative data were drawn from a longitudinal study of coping and substance use in a sample of urban African American adolescents (N=132; M= 13.77 years) and their mothers in Richmond, VA. Transcripts of interviews with participants’ mothers regarding their conversations with their adolescent about alcohol, tobacco or other drugs were microanalyzed by two coders in three sets according to the youth participant’s maternal and familial history of substance abuse. Findings revealed considerable similarity …
Giving Voice To The Hero Within: The Combination Of Two Methodologies For Training The Actor/Performer-- The Use Of Ritual Poetic Drama Within The African Continuum And Archetypes For The Actor/Singer As Explored In The Performances Of A Thousand Faces: Every Day Heroes A Deconstruction Of The Hero With A Thousand Faces By Joseph Campbell, Olisa-Mequella F. Enrico-Johnson
Theses and Dissertations
Joseph Campbell tells us that if you look closely at all cultures you find the story of “The Hero's Journey”, the vehicle for my thesis project, a devised theatre piece titled A Thousand Faces: Everyday Heroes. Though the subject of A Thousand Faces is the exploration of “The Hero's Journey” the foundation of the work is the application of the pedagogical principles of Ritual Poetic Drama Within the African Continuum (RPDWAC) as outlined in the practices of my mentor Dr. Tawnya Pettiford-Wates, Assistant Professor of Performance at Virginia Commonwealth University Theatre (VCU). I apply RPDWAC pedagogical principles to Archetypes for …
The Development Of A Novel Multi-Dimensional Product For Wound Healing Applications, Necrisha Roach
The Development Of A Novel Multi-Dimensional Product For Wound Healing Applications, Necrisha Roach
Theses and Dissertations
A characteristic feature of chronic wounds is a prolonged inflammatory response as well as susceptibility to infection. Studies have shown that during the inflammatory response, there is a significant increase in the levels of neutrophil-derived enzymes. The purpose of this work was to determine whether the anionic macromolecule polystyrene sulfonate (PSS) and five of its salt forms, namely PSS-calcium, PSS-chlorhexidine, PSS-doxycycline, PSS-glutathione and PSS-silver are able to inhibit the activity of three of the enzymes whose levels are elevated in chronic wounds: elastase, cathepsin G and myeloperoxidase. In addition to the enzyme inhibition study, the various formulations’ antimicrobial properties were …
Scribble: A Potential Dual Kinase Inhibitor, Steven Christofakis
Scribble: A Potential Dual Kinase Inhibitor, Steven Christofakis
Theses and Dissertations
Extracellular signal-regulated kinases (ERKs) modulate cellular activities in response to extracellular stimuli and play important biological roles. Thus, perturbed kinase pathways induce pathological conditions, such as tumor development. Rit, a novel member of the Ras family GTPases, activase ERK6, and its over-expression confers tumorigenicity. We hypothesized the presence of scaffolding molecules specific to ERK6, similar to other known MAP kinases. We performed yeast two-hybrid assays using ERK6 as bait, and Scribble was identified as a binding partner. Scribble contains 16 LRR domains and four PDZ domains. We performed immunoprecipitation (IP) assays and discovered ERK2 as another binding partner. Surprisingly, no …
For The Love Of God?! Is There A Place For Gay Christians Between Faith And Fundamentalism?, Apryl D. Prentiss
For The Love Of God?! Is There A Place For Gay Christians Between Faith And Fundamentalism?, Apryl D. Prentiss
Theses and Dissertations
Drawing from observation, autoethnography, ethnographic research and audio-taped interviews, this thesis explores the complicated and emotionally charged relationship between homosexuality and Christianity. The current culture war being waged in the media between the Religious Right and members of the LGBT community often results in the isolation and rejection of those who would define themselves as gay Christians. This thesis explores the role of the Bible as it informs and catalyzes this war and other foundational beliefs used as weapons in this rhetorical conflict. Additionally, this thesis analyzes the current battle between the church and the social movement for change in …
The Application Of Collaborative Planning Principles With A Content Management System And Web 2.0 Technologies, Craig Macivor
The Application Of Collaborative Planning Principles With A Content Management System And Web 2.0 Technologies, Craig Macivor
Theses and Dissertations
As urban planners have sought to move away from the rationalist approach that has been employed for decades, and to encourage more public participation than has traditionally existed in the planning process, they have consistently encountered obstacles in successfully communicating with other stakeholders. Likewise, many citizens do not feel they have enough access to planning-related information or adequate means of participation. These systemic problems are due in large part to the limitations of the media on which planning documents have always been printed; the structure and content of the paper-based comprehensive plan has meant that the rationalist process has, at …
Neutrophil Products Control The Expression Of Progesterone Receptors And Matrix Metalloproteinase-1 In The Decidual And Myometrium And Are Possible Regulators Of Premature Labor, Anna Solotskaya
Theses and Dissertations
Neutrophils infiltrate myometrium and decidual tissue prior to parturition. Activated neutrophils release reactive oxygen species (ROS) and tumor necrosis factor α (TNFα), which might increase expression of pro-labor genes such as matrix metalloproteinase-1 (MMP-1), progesterone receptor (PR) A/B ratio, and cause demethylation of DNA. These changes might cause labor. Decidual tissue was obtained from consented, healthy women at term (37+ weeks of gestation) not in labor (no contractions, without cervical effacement), term labor and preterm labor (under 37 weeks of pregnancy). Decidual and myometrial cells in culture were treated with (1) ROS, (2) TNFα, or (3) 5-aza-2’-deoxycytidine. Total RNA was …
A Test Of The Cwb-Ocb Emotion-Centered Model, Ernest O'Boyle
A Test Of The Cwb-Ocb Emotion-Centered Model, Ernest O'Boyle
Theses and Dissertations
Discretionary behaviors such as counterproductive work behaviors (CWBs) and organizational citizenship behaviors (OCBs) exist outside of the job description, but these behaviors nevertheless have profound influence on the organization and its members. Using Spector and Fox’s (2002) General OCB-CWB emotion centered model as the conceptual framework, I tested a specific model with personality, perceptions of the workplace, and emotional processes as antecedents of both OCB and CWB. The proposed model fit the data well and the results indicated that the emotional processes of burnout and engagement partially mediate the individual and organizational antecedents.
Tied Together: A Molecular Role For Tie1 In Angiopoietin Tie2 Signaling, Tom Cm Seegar
Tied Together: A Molecular Role For Tie1 In Angiopoietin Tie2 Signaling, Tom Cm Seegar
Theses and Dissertations
The primary function of the vascular system is the maintenance of oxygen homeostasis for all metazoan tissue. Angiogenesis, the remodeling and maintenance of new blood vessels from an existing vessel, is primarily controlled through the endothelial specific receptor tyrosine kinase Tie2, and the orphan receptor tyrosine kinase, Tie1. Although these receptors share highly conserved, genetic and biochemical analysis has shown these receptors have distinct and essential roles in angiogenesis. Tie2 activation typically results in vessel stability and quiescences and has further been shown to interact with all four sub-types of the angiopoietin signaling factors, Ang1-4. Conversely, Tie1 is involved in …
A Case Study Of The Collaborative Professional Development Activities Between Public School Leas And Catholic Schools In The Diocese Of Richmond., David J. Urban
Theses and Dissertations
The purpose of this qualitative study was to examine the perceptions of collaboration between public and Catholic school administrators using the involvement in the federal Title II professional development program as the subject area. Volunteer participants were interviewed using a researcher developed and pilot study tested interview guide. Four locations were selected covering eight sites and 11 total participants. Interview transcripts, researcher observations, and researcher notes were used to describe the participant perceptions and develop the study’s emerging themes of communication and attitude.