93 research outputs found

    Forney Creek

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    In this photograph by Dick Zani, Glenn Cardwell is standing on remains of old railroad bridge on Forney Creek. No doubt, these remains were once part of a railroad serving logging operations in the Smokies

    Diffusion in an absorbing porous medium : from microscopic geometry to macroscopic transport

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    Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Includes bibliographical references (p. 71-73).Two physical models of diffusion in absorbing porous media are proposed on two length scales. One models diffusion in the pore space of a random medium with absorbing interfaces while the other is a reaction diffusion model where particles are absorbed in the bulk. Typical particle traveling distances and a bulk absorption coefficient are described in terms of general geometrical characteristics of a random medium and the analytical relations are found to compare well with numerical experiments. For the case of geometries consisting of randomly placed cubes, absorption in the bulk scales with the solid fraction to the two-thirds power. The statistical distribution of reaction rates in these models is found to be inversely related to the reaction rate. A quasi-static Monte-Carlo model is also investigated. The more complex problem of microbial extracellular enzyme distributions in marine sediment was an inspiration for this work.by David C. Forney, III.S.M

    Iowa State College Journal of Science 30.1

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    Evaluation of nutrient availability in soils, and prediction of yield response to fertilization. C.A. Black 1 Effects of organic mercury compounds on enzymatic oxidation of malic acid. James L. Hilton and Frederick G. Smith 13 Fungus leaf spots of brome grass in Iowa. Lois H. Tiffany 21 The leguminosae of the north-central United States II. Hedysareae. Duane Isley 33 Growth of crappies, bluegill, and warmouth in Lake Ahquabi, Iowa. Richard C. Hennemuth 119 Effect of fluorescent and incandescent light on temperatures in photoperiodic chambers. S.C. Wiggans and R.H. Shaw 139 Life history of the black bullhead, Ameiurus melas (Rafinesque), of Clear Lake, Iowa. John L. Forney 145</p

    At limits of life: multidisciplinary insights reveal environmental constraints on biotic diversity in continental Antarctica

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    Data source: Supporting information, http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0044578#s5Multitrophic communities that maintain the functionality of the extreme Antarctic terrestrial ecosystems, while the simplest of any natural community, are still challenging our knowledge about the limits to life on earth. In this study, we describe and interpret the linkage between the diversity of different trophic level communities to the geological morphology and soil geochemistry in the remote Transantarctic Mountains (Darwin Mountains, 80uS). We examined the distribution and diversity of biota (bacteria, cyanobacteria, lichens, algae, invertebrates) with respect to elevation, age of glacial drift sheets, and soil physicochemistry. Results showed an abiotic spatial gradient with respect to the diversity of the organisms across different trophic levels. More complex communities, in terms of trophic level diversity, were related to the weakly developed younger drifts (Hatherton and Britannia) with higher soil C/N ratio and lower total soluble salts content (thus lower conductivity). Our results indicate that an increase of ion concentration from younger to older drift regions drives a succession of complex to more simple communities, in terms of number of trophic levels and diversity within each group of organisms analysed. This study revealed that integrating diversity across multi-trophic levels of biotic communities with abiotic spatial heterogeneity and geological history is fundamental to understand environmental constraints influencing biological distribution in Antarctic soil ecosystems.Catarina Magalhães, Mark I. Stevens, S. Craig Cary, Becky A. Ball, Bryan C. Storey, Diana H. Wall, Roman Tűrk and Ulrike Ruprech

    NIST Hazard I team receives the Department of Commerce Silver Medal, October 31, 1990

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    On October 31, 1990 the NIST Hazard I team received the Department of Commerce Silver Medal. The Department of Commerce Silver Medal is the second highest honorary award given by the Department. It is granted for meritorious contributions of unusual value to the Department or the Nation. The team was recognized for their development of HAZARD I, was the world’s first quantitative fire hazard assessment methodology. This revolutionary evaluation procedure allowed prediction of the threat to life and safety arising from fires in dwellings. The evaluation procedures included user-friendly software and a reference guide which allowed a user to describe a fire problem and calculate the outcome using professional-quality fire modeling software developed by the team. Hazard I was used for new commercial product development and for litigation. (left to right) Deputy Secretary of Commerce Thomas J. Murrin; C. Lynn Forney, mathematician; Emil Braun, physicist; Richard D. Peacock, chemical engineer; Walter W. Jones, group leader, Fire Hazard Analysis; Richard W. Bukowski, senior research engineer; Under Secretary for Technology Robert M. White. This image is part of the Fire Research collection. In 1914 Congress authorized an appropriation to the National Bureau of Standards for a special investigation to study fire-resistant properties of building materials. Fires were claiming thousands of lives annually in the country, with property losses exceeding $250 million. In a joint undertaking with the National Fire Protection Association and the Underwriters' Laboratories, the Bureau conducted a thorough study of the behavior and safety of building materials in various types of construction under all possible fire conditions. The study furnished architects, builders, state and city building bureaus, and insurance interests with fundamental engineering data long needed but nowhere available. [from: Measures for Progress by R.C. Cochrane, p. 130-131.

    Creighton University School of Law Class of 2009

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    Graduates|Alberhasky, Terri; Baldwin, Sara; Benson, Tyson; Beranek-Oscarson, Roxann; Blaha, Scott B.; Block, Tyler; Brown, Nick; Brugman, Helmut E.; Campbell, Molly E.; Carlson, Jared D.; Casper, Jonathan D. (President); Chalkey, Jeffrey A.; Chambers, Craig N.; Collins, Kainani C.; Cortese, Elisabeth A. (3L Representative); Cossitt, Thomas P.; Craig, J. Aaron; Cummings, Morgan I.; Cunningham, Charles B.; Curry, Carolyn H.; Czapla, Andrew T.; Davis, Kristin A.; Denning, Emily; Dougherty, Joshua N.; Dreshman, Lauren F.; Duncan, Janice; England, John James; Evers, Mitchell E.; Flaum, Martin J., II; Flickinger, Benjamin J.; Foley, Kathryn G.; Forney, Paul J.; Futhey, Robert W.; Garrigan, Sean W.; Gatterman, Anthony T.; George, Jennifer I.; Gilliam, Martha C.; Goates, Richard H. (3L Representative); Gordon, Jacob C.; Greenband, Jennifer W.; Grennan, David A.; Hall, Carter C.; Hanley, Matthew Mark; Hardacre, Justin B.; Hardy, Ryan S.; Hillebrandt, John P.; Hinds, Derek E.; Hindrichs, Sarah A.; Hoch, Harry A., III; Hockenberry, Justin D.; Holland, Robert A.; Jobe, Britton D.; Johnson, Blake E.; Johnson, Lawrence J., Jr.; Jungman, Megan K.; Kelley, Sean; Kelley, Winifred F.; Kelly, Brent M.; Kenney, Christine M.; Kerger, Cory J.; Kiesler, Mark; Kimball, Katherine; Kleine, Philip K.; Kleysteuber, Jeffrey D.; Knox, Jessica L.; Landherr, Christopher R.; Langdon, Timothy J.; LaPole, Elizabeth ; Larson, Joseph A.; Lavery, Sean M.; Lavin, Richard P.; Lee, Philip K.; Levine, Jessica E.; Lucht, Stacy K.; Marron, Matthew V.; Marsh, Matthew G.; Martin, Rachel A.; McSorley, Tricia (Vice President); Mertz, Scott; Metcalfe, Christopher J.; Mohrhauser, Luke T.; Moles, Christopher D.; Molner, Mark D.; Mori, Sarah; Muckey-Shirk, Jeremy Ray; Mullen, Tyler; Nabity, Jeffrey M.; Neher, Matthew d'Argy; Nelsen, Russell J.; Nelson, Shellie; Neman, Todd; Niemann, Rebecca A.; Novak, Amanda L.; O'Bannon-Martens, Te'ya T.; O'Connell, Kevin J.; Oliverson, Derek K.; Oswald, Zachary; Pekny, Darren J.; Prince, Jacalyn A.; Prybella, Kristen M.; Ratigan, Ryan P.; Ratzlaff, Leah; Rinehart, Jess P.; Roberts, Justin A.; Roberts, Michael M.; Robinson, Beau; Rooney, William E., III; Roose, Jeremy; Rose, Jeremy A.; Rosso, Ryan V.; Roundy, Jonathan E.; Saathoff, Matthew P.; Schons, Callie R.; Seagrass, Jonathan; Seavey, Kimberly I.; Simpson Eric J.; Smith, David; Sodoro, Meghan A.; Sohriakoff, Nathan J.; Sooriyaarachchi, Marcus C. B.; Stark, Robert A.; Steen, Ryan A.; Steier, David; Stiles, Dustin J.; Suhrbier, Rachel R.; Sullivan, Margaret; Swanson, Joshua A.; Tan, Jenny; Thorpe, Kristen; Tyrrell, Robert E.; Vela, Homero E.; Walkup, Ashley; Warnock, Nathaniel J.; Warren, Patrick; Wegner, Jonathan; Welch, Nicholas; Westerlin, Ryan A.; Whiddon, Mandy L.; Whitmer, Darin L.; Winter, Matthew; Wolff, Jessica; Wolters, Bradley E.; Woods, Laura; Young, Michael S.; Zapala, John W.|40 x 30 in (landscape
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