100,456 research outputs found
Joshua Davis: Author of Spare Parts
No full textCitation: K-State First (2016). Joshua Davis: Author of Spare Parts [Flier]. Manhattan, Kansas: K-State First.Flyer advertising Joshua Davis's author talk at Kansas State University
Steven Johnson Author Talk Poster
No full textK-State Book NetworkA poster advertising an author talk by Steven Johnson at Kansas State University on September 3, 2014. Steven Johnson's book "The Ghost Map" was the 2014-2015 common book
The geochemistry of groundwater and sediments governing tungsten concentration in the basin-fill aquifers, Fallon, Nevada
No full textThe wide range of tungsten (W) concentrations (&sim0.7-700 ppb) in the groundwater of Fallon, Nevada, initiated an investigation to understand the geochemical cycle of W in the basin-fill aquifer. Tungsten in the groundwater became a potential health concern due to its observed concentrations in the human population of Fallon; the potential sources of W from nearby W ore deposits, mines, processing plants, and geothermal waters; and a possible cluster of childhood leukemia cases that was documented in the area. Spatial variation, concentration, and the mineralogical phase association(s) of W in sediments of the basin-fill alluvial aquifer near Fallon, NV, were identified in this study. These sediment characteristics were then compared to groundwater concentrations of W in an attempt to understand the geochemical controls on W in the aquifer environment. It was hypothesized that Eh levels control the distribution of W between solid and aqueous phases. Key findings of this study are: 1) concentration of W in bulk sediments ranged from 1.3&mdash7.9 mg/kg, and is a function of grain size and sediment chemistry, 2) no W minerals were observed in the aquifer sediments, 3) approximately 90% of the W partitioned into three sediment phases: non-crystalline iron (Fe) oxides, crystalline Fe oxides, (collectively referred to as FeOx) and organic matter (OM), 4) the association of W with FeOx and OM was unique compared to other trace elements (Mo, Cr, As, U, and Co) that predominately associated with the sulfide mineral fraction in the aquifer sediments, and 5) solid phase W concentrations correlate with dissolved W (R2 = 0.94), where groundwater with W concentrations >50 &mug/l had high alkalinity (>200 mg/l), reducing conditions (-0.7e4 mg/kg. Model results suggest dissolved As and P competed with dissolved W for adsorption sites on the Fe oxide surface, resulting in less W adsorption than expected. One conclusion of this work is that dissolved W was greatest in wells with the lowest pe levels. However, Fe oxides were observed in all environments, suggesting that adsorption between W and the Fe oxide surface occurs in all environments, and provides a control on dissolved W concentration
Clathrodrillia colombiana Fallon, 2016, new species
No full textClathrodrillia colombiana, new species (Plate 39) Type material. Holotype 44.4 x 17.9 mm, J. Poulos! 1991 (UF 470280). No paratypes. Type locality. Off Cabo de la Vela, Guajira Dept., Colombia, in 200 ft [61 m]. Range and habitat. Colombia (off Guajira Dept.). If the specimens illustrated in Daccarett & Bossio (2011) and K. & L. Sunderland (1999 c) are this species, then its range would include Magdalena Dept., Colombia and the Gulf of Venezuela, respectively. The single reported depth is 61 m. Description. Shell medium (44.4 mm total length; may be to 59 mm, if the Sunderland & Sunderland 1999 c report is this species), fusiform with a tall, turreted spire, and narrow, moderately long anterior canal; suture appressed, made somewhat [wavy] over previous whorl’s ribs; whorls straight-sided on spire, number approximately 10 total, the last 58 % of total shell length. Sculpture of numerous ribs cut by closely spaced grooves; aperture narrow. Protoconch unknown, missing on holotype. Axial sculpture of numerous narrow ridge-crested ribs (18 on penultimate and 11 on last whorl to varix), straight on spire whorls, slightly sigmoidal on last whorl where they narrow and evanesce on shell base to anterior fasciole. Ribs end abruptly at sulcus, producing squareangled shoulders, extending to suture only as raised lines, or traces not much larger than growth striae. Varix low, broad, hump-like, positioned approximately ⅓-turn from edge of outer lip. Appearing like a series of ribs only partly fused. Spiral sculpture of deep, closely-spaced grooves that result in cord-like spirals overriding ribs. Cords are somewhat ridged (squared rather than round) on their abapical sides, number 5 on penultimate, 15 on last whorl, and 8 more shallow, closely spaced grooves on anterior fasciole. Sulcus flat, wide, with coarse, curved growth striae along with rib traces, and fine spiral grooves that are mostly masked by the ribs and growth striae. Outer lip slightly flattened from varix to its edge such that it protrudes beyond the shell’s circumference; has approximately 10 irregular axial folds; edge forms a low arc from anal sinus to anterior canal with only a slight indentation marking the stromboid notch. Teeth are absent but spiral grooves appear scalloped when viewed ventrally. Anal sinus a deep U-shaped notch offset laterally by the parietal lobe such that it appears spout-like. Inner lip margined, recumbent on parietal wall, erect anteriorly, formed into an elongate lobe on the parietal side of the anal sinus posteriorly. Anterior canal moderately long, open, turned to the right when viewed ventrally, slightly notched; fasciole not swollen. Color yellow-brown overall; aperture, fasciole, and rib crests on shoulder white; brown patch on varix. Remarks. Taxonomy. Clathrodrillia colombiana has all of the characteristics of Clathrodrillia: strong spiral sculpture, ribs that are angled at whorl shoulders giving it a turreted outline, a hump-like varix, and narrow aperture with a moderately long anterior canal and spout-like anal sinus. Identification. Clathrodrillia colombiana is most similar to C. gibbosa (Born, 1778) and C. petuchi (Tippett, 1995). It differs from C. gibbosa in being stouter (shorter spire), and broader (W/L = 0.403 versus avge. W/L = 0.371), and in being colored differently. From C. petuchi it differs in having more ribs (18 versus 13–15 on the penultimate whorl), deeper spiral grooves over its shell surface, and in being colored differently. Although this taxon is based on a single specimen, it is uniquely different from its most similar congeners as explained above. Specimens of C. gibbosa from Colombia do not resemble C. colombiana and thus the latter is not a geographic varient. Furthermore, illustrations in Daccarett & Bossio (2011) and Sunderland &. Sunderland (1999 c) are clearly of this species, being similar in appearance, and thus giving evidence that supports the constancy of and validity of this species. Etymology. The Colombian Clathrodrillia. Named for the country of the type locality.Published as part of Fallon, Phillip J., 2016, Taxonomic review of tropical western Atlantic shallow water Drilliidae (Mollusca: Gastropoda: Conoidea) including descriptions of 100 new species, pp. 1-363 in Zootaxa 4090 (1) on pages 89-90, DOI: 10.11646/zootaxa.4090.1.1, http://zenodo.org/record/26329
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Expanding “Communities and Collections” in the K-State Research Exchange (K-REx) to benefit the K-State Community and Beyond
No full textKansas State University has used its institutional repository, the K-State Research Exchange (K-REx), to store and share its first year experience program, K-State First, and notably its common reading program, K-State First Book. We have done so with the aim that the accessibility and preservation of these documents ensures program stability, promotes engagement with first year programming, and provides the ability to foster growth,educational opportunities, and community building outside of K-State. Moving away from research concentrated repositories and taking a more holistic approach to scholarship, especially when realizing the pedagogical significance of collaborative campus programming, institutions can showcase, discover, preserve, and grow programs that shape campus communities and engagement.
This session will provide an overview of K-REx and spotlight the digital archive of the university’s first year experience program and common reading program, K-State First Book. We will discuss the benefits and challenges to expanding the purview of your repositories. We talkthrough the types of materials we decide to host in our repository and why we share what we do. We will also provide recommendations on new ways to evaluate what belongs in institutional repositories and how this diversity can benefit your program, your institution, the community, and others
Ready Player One Program Event Poster
No full textK-State Book NetworkA poster advertising an author talk by Ernest Cline at Kansas State University on October 10, 2013. Ernest Cline's book "Ready Player One" was selected as the 2013-2014 common book
Depolarization and decreased surface expression of K+ channels contribute to NSAID-inhibition of intestinal restitution
No full textNon-steroidal anti-inflammatory drugs (NSAIDs) contribute to gastrointestinal ulcer formation by inhibiting epithelial cell migration and mucosal restitution; however, the drug-affected signaling pathways are poorly defined. We investigated whether NSAID inhibition of intestinal epithelial migration is associated with depletion of intracellular polyamines, depolarization of membrane potential (Em) and altered surface expression of K+ channels. Epithelial cell migration in response to the wounding of confluent IEC-6 and IEC-Cdx2 monolayers was reduced by indomethacin (100μM), phenylbutazone (100μM) and NS-398 (100μM) but not by SC-560 (1μM). NSAID-inhibition of intestinal cell migration was not associated with depletion of intracellular polyamines. Treatment of IEC-6 and IEC-Cdx2 cells with indomethacin, phenylbutazone and NS-398 induced significant depolarization of Em, whereas treatment with SC-560 had no effect on Em. The Em of IEC-Cdx2 cells was: −38.5±1.8mV under control conditions; −35.9±1.6mV after treatment with SC-560; −18.8±1.2mV after treatment with indomethacin; and −23.7±1.4mV after treatment with NS-398. Whereas SC-560 had no significant effects on the total cellular expression of Kv1.4 channel protein, indomethacin and NS-398 decreased not only the total cellular expression of Kv1.4, but also the cell surface expression of both Kv1.4 and Kv1.6 channel subunits in IEC-Cdx2. Both Kv1.4 and Kv1.6 channel proteins were immunoprecipitated by Kv1.4 antibody from IEC-Cdx2 lysates, indicating that these subunits co-assemble to form heteromeric Kv channels. These results suggest that NSAID inhibition of epithelial cell migration is independent of polyamine-depletion, and is associated with depolarization of Em and decreased surface expression of heteromeric Kv1 channels.ID: S0006295207001931; M3: Article; Accession Number: S0006295207001931; Author: L.C. Freeman (b); Author: D.F. Narvaez (a); Author: A. McCoy (a); Author: F.B. von Stein (c); Author: S. Young (b); Author: K. Silver (a); Author: S. Ganta (b); Author: D. Koch (b); Author: R. Hunter (b); Author: R.F. Gilmour (c); Author: J.D. Lillich (a, ⁎); Affiliation: Department of Clinical Sciences, Kansas State University, Manhattan, KS 66506, United States; Affiliation: Department of Anatomy and Physiology, Kansas State University, Manhattan, KS 66506, United States; Affiliation: Department of Biomedical Sciences, Cornell University, Ithaca, NY 14853, United States; Keyword: Non-steroidal anti-inflammatory drugs; Keyword: Intestinal epithelial cells; Keyword: Membrane potential; Keyword: Potassium channels; Number of Pages: 12; Language: English;Source type: Electronic(1)http://search.ebscohost.com/login.aspx?direct=true&db=edselp&AN=S0006295207001931&site=eds-live&scope=sit
- …
