Corrosion protection of aluminum alloys in contact with other metals

Study establishes the quality of chemical and galvanized protection afforded by anodized and aldozided coatings applied to test panels of various aluminum alloys. The test panels, placed in firm contact with panels of titanium alloys, were subjected to salt spray tests and visually examined for corrosion effect

A Pilot Project to Understand Prescribing Practices of Otitis Media with Effusion

Otitis media is one of the most common reasons for pediatric healthcare visits and a common reason for inappropriate prescribing of antibiotics. Otitis media is differentiated into two categories: acute otitis media (AOM) and otitis media with effusion (OME). OME is characterized by reduced tympanic mobility and middle ear effusion without signs of acute inflammation or infection. Approximately 80% of children will have experienced at least one episode of otitis media by their third birthday. The clinical practice guideline for managing otitis media with effusion was updated in 2016. This guideline supports three months of watchful waiting from start of symptoms or date of diagnosis over the use of antibiotics. Problem: Providers continue to use antibiotics for the treatment of OME in the presence of published guidelines. Project Aim: The purpose of this project was to understand prescribing practices among health care providers in the diagnosis, treatment and management of OME through the use of a descriptive survey. Donabedian’s Quality Framework and structure process outcome model guided the project. Project Method: A convenience sample of advanced practice registered nurses (APRNs) and physicians from three area suburban urgent cares were surveyed regarding their knowledge of the current guidelines and factors associated with adherence to prescribing practice guidelines. Results: The majority of providers recognized a middle ear effusion as a sign of an OME, however, less than half identified all other potential signs of OME. It was also found that a variety of diagnosis codes were used to document an OME or AOM. Recommendations included provider education on inclusion and exclusion criteria for OME diagnosis and using standardized diagnosis codes for AOM and OME in the urgent cares. These results will direct provider education on OME and antibiotic stewardship in the urgent cares. Keywords: Otitis media, OME, antibiotics, prescribing practices, quality improvemen

A New Quantitative Method for the Taxonomic Identification of Tetrapods

The rarity of good fossil samples throughout geologic time frequently makes fossil identification difficult. This dissertation presents a new, multivariate, statistically validated method to identify tetrapods based on quantification of the shapes of microstructural features in cortical bone of the postcranial skeleton. The ultimate goal is to reduce the reliance on rare, near-complete fossil skeletons. The method is validated on a set of 15,745 mammalian microstructural features from eleven diverse species. An additional set of 21,122 microstructural features from one species serve to examine microstructural variation within a single skeleton. Microstructural measurements were made on thin-sections using optical microscopy. Initial tests of the method were applied to extant mammalians whose taxonomic affinities were known. Three case studies comparing: 1) the left tibiae from 11 mammals,: 2) the mid-body of each left rib in Odocoileus virginianus, and: 3) five cross-sections from left rib seven of O. virginianus represented tests of inter-taxonomic, intra-skeletal, and intra-bone microstructural variation, respectively. Principal Component Analysis of measurements on the tibiae of 11 mammals was successful in discerning a taxonomic signal in the shape and size characteristics of primary vasculature, secondary osteons, Haversian canals, primary lacunae, and secondary lacunae. No single microstructure or measurement is sufficient to account for taxonomic variation. Rather, size, shape, and orientation of various microstructural features, in combination, define and distinguish the taxa. Soft Independent Modeling of Class Analogy properly reassigned test samples from several taxa. In contrast with the results from the multi-species set, analysis of the intra-skeletal and intra-bone case studies revealed no pattern of microstructural variation. The data suggest that the microstructural variation within a skeleton is small compared to variation between taxa and that intra-skeleton variation will not affect the overall taxonomic designation. All principal component analyses were tested and found to be significant at the 95% confidence level using Multiple Discriminant Analysis. This work establishes a methodology for using bone microstructural features as a means for reconstructing taxonomic identity and supports continued research on this methodology, with the goal of applying it to rare fossil specimens in order to enable a next-generation approach to paleoecological analysis

SLIDES: BMP Project

Presenter: Kent Kuster, Consultation Coordinator, Colorado Department of Public Health and Environment (CDPHE) 17 slide

Iowa Agriculturist 77.03

4 Eagles Merritt Benson, Ag JI 3, Fremont, Neb. 5 Vultures Kathy Treloar, Ag JI 3, Sumner, la. 8 Remedies Linda Blake, Ag JI 3, Webster City, la. 10 Conformation Shapes Up Linda Blake, Ag JI 3, Webster City, la. 11 Going Once, Twice, Sold! Ron Sterk, Ag JI 3, Albia, la. 14 Auction Terry Schild, Farm Op 4, Auburn, la. 17 Small Grains Jeanne Michels, Ag JI 3, New Haven, la. 18 Thailand Marcia Zarley, JL MC 2, Des Moines, la. 22 China Russell Berndt, Ag JI 3, Des Moines, la. 26 Young Farmer Linda Blake, Ag JI 3, Webster City, la.https://lib.dr.iastate.edu/iowaagriculturist/1059/thumbnail.jp