Poly ethylene glycol (PEG) based microgels were synthesized and investigated. The PEG microgel has the same phase transition as the traditional poly N-isopropylacrylamide (PNIPAM). As a good substitute of PNIPAM, PEG microgel exhibits many advantages: it is easier to control the lower critical solution temperature (LCST) of the microgel by changing the component of copolymers; it has a more solid spherical core-shell structure to have a double thermo sensitivity; it is straightforward to add other sensitivities such as pH, magnetic field or organic functional groups; it readily forms a photonic crystal structure exhibiting Bragg diffraction; and, most importantly, the PEG microgel is biocompatible with human body and has been approved by FDA while PNIPAM has not. PEG microgels with core-shell structure are synthesized with a two-step free radical polymerization and characterized with DLS, SLS and UV–Vis. The dynamic mechanics of melting and recrystallizing of the PEG core-shell microgel are presented and discussed. Photonic crystals of PEG microgels were synthesized and characterized. The crystal can be isolated in a thin film or a bulk column. The phase transition of PEG microgel was simulated with the mean field theory. The enthalpy and entropy of phase transition can be estimated from the best …

Since the development of the correlation consistent composite approach (ccCA) in 2006, ccCA has been shown to be applicable across the periodic table, producing, on average, energetic properties (e.g., ionization potentials, electron affinities, enthalpies of formation, bond dissociation energies) within 1 kcal/mol for main group compounds. This dissertation utilizes ccCA in the investigation of several chemical systems including nitrogen-containing compounds, sulfur-containing compounds, and carbon dioxide complexes. The prediction and calculation of energetic properties (e.g., enthalpies of formation and interaction energies) of the chemical systems investigated within this dissertation has led to suggestions of novel insensitive highly energetic nitrogen-containing compounds, defined reaction mechanisms for sulfur compounds allowing for increased accuracy compared to experimental enthalpies of formation, and a quantitative structure activity relationship for altering the affinity of CO2 with substituted amine compounds. Additionally, a study is presented on the convergence of correlation energy and optimal domain criteria for local Møller–Plesset theory (LMP2).

The effect of a reinforcer on behavior is largely determined by the schedule in which it is implemented. One type of reinforcement schedule that has not been explored extensively is conjugate reinforcement. Previous researchers have used conjugate schedules to evaluate a reinforcer's effects on behavior and as an assessment tool. However, none have explored how to effectively engineer conjugate schedules in applied settings. The current study explores the effectiveness of conjugate reinforcement implemented by several interventionists across a variety of responses, reinforcers, and in a wide range of participants with autism. The results indicated that delivering social, audio/visual, and tangible stimuli in a conjugate schedule resulted in increased durations of various target responses (e.g. social skills, motor skills) and non-targeted measures (e.g., approach, social bids, speed) across participants. Considerations regarding reinforcer and response selection in implementing conjugate schedules in applied settings are provided.

Research suggests that substance use is a risk factor for increased suicidal ideation. This study explored the relationship between substance use, suicidal ideation, and impulsivity in a sample of college students and individuals seeking outpatient treatment. Participants were interviewed for information on severity of suicidal ideation and substance use. Participants completed the Psychiatric Diagnostic Screening Questionnaire, the substance use section of the Structured Clinical Interview for the DSM-IV, the Alcohol Use Disorders Identification Test, the Scale for Suicide Ideation, and the UPPS-P Impulsivity Behavior Scale. These measures were used to determine the amount of variance in suicidal ideation accounted for by substance use. Variables reflecting substance use classification, frequency, and severity were used to predict severity of suicidal ideation.

Water-soluble Pt(II) phosphors exist predominantly for photophysical studies. However, fewer are known to be candidates for cisplatin derivatives. If such a molecule could exist, it would be efficient at not only destroying the cancerous cells which harm the body, but the destruction would also be traceable within the human body as it occurred. Herein, research accomplished in chemistry describes the photophysical properties of a water-soluble phosphor. Spectroscopically, this phosphor is unique in that it possesses a strong green emission at room temperature in aqueous media. Its emission is also sensitive to the gaseous environment. These properties have been expanded to both analytical and biological applications. Studies showing the potential use of the phosphor as a heavy metal remover from aqueous solutions have been accomplished. The removal of toxic heavy metals was indicated by the loss of emission as well as the appearance of a precipitate. The gaseous sensitivity was elicited to be used as a potential cancerous cell biomarker. In vivo studies were accomplished in a wide variety of species, including bacteria (E. coli), worms (C. elegans), small crustaceans (Artemia), and fish (D. rerio and S. ocellatus). The phosphor in question is detectable in all of the above. This fundamental …

The focus of this thesis is to determine what factors predict zero anaphora in Meithei. The data for this thesis is derived from pear stories. Arguments were tabulated in spreadsheets counting nouns, pronouns, and zero anaphors; they were also examined for their semantic role and information status. The findings showed the agent role was typically represented by reduced forms of reference, the majority of the time by zero anaphora. Other semantic roles were typically represented by lexical full forms of reference. Agents were strongly correlated to previous subjects. Other semantic roles were typically found in the other information status categories. The conclusion drawn from these findings is semantic role and information status influence accessibility, and accessibility determines whether or not arguments are represented by zero anaphors in Meithei.

Semi-weekly newspaper from Mabank, Texas that includes local Cedar Creek Lake area, state and national news along with extensive advertising.

Semi-weekly newspaper from Copperas Cove, Texas that includes local, state and national news along with advertising.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Article on integrating image-based research datasets into an existing digital repository infrastructure.

This presentation discusses the End of Term 2008 Presidential Web Archive. The University of North Texas (UNT) Libraries collaborated with members of the International Internet Preservation Consortium (IIPC) on the End of Term 2008 Presidential Web Harvest from October, 2008 to February, 2009. The project team archived 160,211,356 URIs during this collaboration, which became a research dataset for an IMLS-funded grant to investigate collection development using web archives. The project team analyzed the 10,318,073 PDFs and developed a retrieval and exploration system for collection developers interested in acquiring and developing born-digital collections from the End of Term Web Archive.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Weekly newspaper from Yorktown, Texas that includes local, state, and national news along with advertising.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.