3,222 research outputs found

    Incivility Among Radiography Educators in the United States

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    Purpose: Medical imaging education must nurture a civil environment for both students and educators. Because faculty incivility can potentially compromise learning and interfere with workplace productivity, this study examined the perceptions of incivility among radiography educators in the United States. Methods: A survey research method was designed to examine the severity and frequency of incivility among educators teaching in radiography programs accredited by the Joint Review Committee on Education in Radiologic Technology (JCERT). Using a scale of 1 to 4, the participants in this study considered their perceptions of faculty incivility among radiography educators within their respective departments. Results: Civility has been demonstrated as a perceived problem in this survey. A total of 240/1,333 educators completed the survey, resulting in a response rate of 18%. Only 40.4% (97/240) of the participants in this study perceived that the severity of incivility was not a problem. The majority of the participant perceived civility to be an issue with 23.8% (57/240) reporting a minor problem; 39/240 (16.3%) said it was a moderate problem; and 47/240 (19.6%) believed faculty incivility is a major problem among radiography educators in the United States. Interestingly, severe uncivil faculty behaviors did not occur as often as behaviors classified as less severe. A very weak negative correlation was found between perceived severity of faculty incivility and age of radiography educators, indicating age increased as the perceived severity of faculty incivility slightly decreased and vice versa. Conclusions: Faculty incivility is perceived to be occurring among radiography educators in the United States. This study provides a foundation for future research to address various aspects of incivility among imaging sciences and radiation therapy educators in the United States

    Acid-Labile Traceless Click Linker for Protein Transduction

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    Intracellular delivery of active proteins presents an interesting approach in research and therapy. We created a protein transduction shuttle based on a new traceless click linker that combines the advantages of click reactions with implementation of reversible pH-sensitive bonds. The azidomethyl-methylmaleic anhydride (AzMMMan) linker was found compatible with different click chemistries, demonstrated in bioreversible protein modification with dyes, polyethylene glycol, or a transduction carrier. Linkages were stable at physiological pH but reversible at the mild acidic pH of endosomes or lysosomes. We show that pH-reversible attachment of a defined endosome-destabilizing three-arm oligo(ethane amino)amide carrier generates an effective shuttle for protein delivery. The cargo protein nlsEGFP, when coupled via the traceless AzMMMan linker, experiences efficient cellular uptake and endosomal escape into the cytosol, followed by import into the nucleus. In contrast, irreversible linkage to the same shuttle hampers nuclear delivery of nlsEGFP which after uptake remains trapped in the cytosol. Successful intracellular delivery of bioactive ß-galactosidase as a model enzyme was also demonstrated using the pH-controlled shuttle system

    Terrestrial solar radiation driven photodecomposition of ciprofloxacin in clinical wastewater applying mesostructured iron(III) oxide

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    Cationic cylindrical polymer brushes based on polybutadiene-block-poly(2-vinylpyridine) were applied as structure-directing agent for mesostructuring F

    Prospectus, September 19, 1979

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    PARKLAND--A KING\u27S PALACE; Student elections lacks voters, candidates, and issues; Parkland College Results of Student Government Election Sept. 12, 13, 1979; Bad Co.: not much fantasy; No record for PC; U.S. productivity down; Sigma Theta Phi: the rush is on; Pro Kennedy group holds first meeting: Notice; WPCD: African affairs needed; Inventory Lists; Parkland Art Program sponsors St. Louis trip; PC offers music; Goldrush has new life; \u27Forum\u27 talks stugo and drinking age; All-Comers pulls surprises; Classifeds; Otrabanda comes to PC; Last Chance to Sign Up for Student Health Insurance; Seven fare well in Freddy; Fast Freddy Contest; Crowd at presentation; U.S. table tennis getting popular; Spikers hopes are high; Elam strides toward victory; Parkland Women\u27s Volleyball Rosterhttps://spark.parkland.edu/prospectus_1979/1012/thumbnail.jp

    Beyond Survey Self-Reports: Using Physiology to Tap Political Orientations

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    Some aspects of our attitudes are composed of things outside of our consciousness. However, traditional survey research does not use measurements that are able to tap into these aspects of public opinion. We describe, recommend, and demonstrate a procedure by which non-self-reported responses can be measured in order to test whether these responses have independent effects on individuals’ preferences. We use one of the better-known physiological measures—electrodermal activity or skin conductance—and illustrate its potential by reporting our own study of attitudes toward President Barack Obama. We find that both self-reported emotional responses and physiological responses to Obama’s image independently correlate with variation in the intensity of attitudes regarding his job approval and his central policy proposal: health-care reform

    Double Averaging Analysis Applied to a Large Eddy Simulation of Coupled Turbulent Overlying and Porewater Flow

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    Freestream turbulence in rivers is a key contributor to the flux of dissolved nutrients, carbon, and other ecologically important solutes into porewater. To advance understanding of turbulent hyporheic exchange and porewater transport, we investigate flow over and through a rough bed of spheres using large eddy simulation (LES). We apply double averaging (combined space and time averaging) to the LES results to determine the mean velocity distribution, momentum balance, and drag forces. Our simulations show large-scale freestream structures interacting strongly with vortices generated at the surfaces of individual spheres to control turbulent momentum fluxes into the bed. The transition between turbulent flow and Darcy flow occurs over the first row of spheres, where turbulence decays rapidly and turbulent kinetic energy, Reynolds stress, and drag forces peak. Below this region, turbulence is only present in the high-velocity flow in open pore throats. Experimental observations suggest that minimum mean porewater velocity occurs in the first open pore space below the transition region, but our results show that the minimum occurs between the first and second pore spaces. The simulation mean porewater velocities are approximately half those captured in measurements because the model resolves the entire flow continuum while measurements can access high-velocity fluid in open pores. The high-resolution dual time-space averaging of the LES resolves both turbulent and mean flow features that are important to interfacial solute and particle fluxes, providing a means to include turbulent hyporheic exchange in upscaled river models, which has not been achieved to date

    Transcriptome analysis of Taenia solium cysticerci using Open reading Frame ESTS (ORESTES)

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    <p>Abstract</p> <p>Background</p> <p>Human infection by the pork tapeworm <it>Taenia solium </it>affects more than 50 million people worldwide, particularly in underdeveloped and developing countries. Cysticercosis which arises from larval encystation can be life threatening and difficult to treat. Here, we investigate for the first time the transcriptome of the clinically relevant cysticerci larval form.</p> <p>Results</p> <p>Using Expressed Sequence Tags (ESTs) produced by the ORESTES method, a total of 1,520 high quality ESTs were generated from 20 ORESTES cDNA mini-libraries and its analysis revealed fragments of genes with promising applications including 51 ESTs matching antigens previously described in other species, as well as 113 sequences representing proteins with potential extracellular localization, with obvious applications for immune-diagnosis or vaccine development.</p> <p>Conclusion</p> <p>The set of sequences described here will contribute to deciphering the expression profile of this important parasite and will be informative for the genome assembly and annotation, as well as for studies of intra- and inter-specific sequence variability. Genes of interest for developing new diagnostic and therapeutic tools are described and discussed.</p
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