Innovative Solutions for Slope Stability Reinforcement and Characterization: Vol. I

Soil slope instability concerning highway infrastructure is an ongoing problem in Iowa, as slope failures endanger public safety and continue to result in costly repair work. Characterization of slope failures is complicated, because the factors affecting slope stability can be difficult to discern and measure, particularly soil shear strength parameters. While in the past extensive research has been conducted on slope stability investigations and analysis, this research consists of field investigations addressing both the characterization and reinforcement of such slope failures. The current research focuses on applying an infrequently-used testing technique comprised of the Borehole Shear Test (BST). This insitu test rapidly provides effective (i.e., drained) shear strength parameter values of soil. Using the BST device, fifteen Iowa slopes (fourteen failures and one proposed slope) were investigated and documented. Particular attention was paid to highly weathered shale and glacial till soil deposits, which have both been associated with slope failures in the southern Iowa drift region. Conventional laboratory tests including direct shear tests, triaxial compression tests, and ring shear tests were also performed on undisturbed and reconstituted soil samples to supplement BST results. The shear strength measurements were incorporated into complete evaluations of slope stability using both limit equilibrium and probabilistic analyses. The research methods and findings of these investigations are summarized in Volume 1 of this report. Research details of the independent characterization and reinforcement investigations are provided in Volumes 2 and 3, respectively. Combined, the field investigations offer guidance on identifying the factors that affect slope stability at a particular location and also on designing slope reinforcement using pile elements for cases where remedial measures are necessary. The research findings are expected to benefit civil and geotechnical engineers of government transportation agencies, consultants, and contractors dealing with slope stability, slope remediation, and geotechnical testing in Iowa

HST Images Flash Ionization of Old Ejecta by the 2011 Eruption of Recurrent Nova T Pyxidis

T Pyxidis is the only recurrent nova surrounded by knots of material ejected in previous outbursts. Following the eruption that began on 2011 April 14.29, we obtained seven epochs (from 4 to 383 days after eruption) of Hubble Space Telescope narrowband Ha images of T Pyx . The flash of radiation from the nova event had no effect on the ejecta until at least 55 days after the eruption began. Photoionization of hydrogen located north and south of the central star was seen 132 days after the beginning of the eruption. That hydrogen recombined in the following 51 days, allowing us to determine a hydrogen atom density of at least 7e5 cm^-3 - at least an order of magnitude denser than the previously detected, unresolved [NII] knots surrounding T Pyx. Material to the northwest and southeast was photoionized between 132 and 183 days after the eruption began. 99 days later that hydrogen had recombined. Both then (282 days after outburst) and 101 days later, we detected almost no trace of hydrogen emission around T Pyx. There is a large reservoir of previously unseen, cold diffuse hydrogen overlapping the previously detected, [NII] - emitting knots of T Pyx ejecta. The mass of this newly detected hydrogen is probably an order of magnitude larger than that of the [NII] knots. We also determine that there is no significant reservoir of undetected ejecta from the outer boundaries of the previously detected ejecta out to about twice that distance, near the plane of the sky. The lack of distant ejecta is consistent with the Schaefer et al (2010) scenario for T Pyx, in which the star underwent its first eruption within five years of 1866 after many millennia of quiescence, followed by the six observed recurrent nova eruptions since 1890. This lack of distant ejecta is not consistent with scenarios in which T Pyx has been erupting continuously as a recurrent nova for many centuries or millennia.Comment: 27 pages, 10 figures, submitted to the Astrophysical Journa

Prospectus, November 14, 1984

YOUR COURAGE, DEDICATION AND SACRIFICES ARE NOT FORGOTTEN; Parkland Veterans Honored; Women Veterans receive deserved recognition; Landslide of volunteers hoped for; Recognition needed all year; Blood Drive November; Best Sellers in the Library; PC Happenings; Original performance at Parkland; How to Live to be 1000 is retirees topic; Gallery hosts touring exhibit; EMT refresher workshop scheduled; Parkland, GM cooperate; Student job prospects look great; Man on Street...Question: Did you vote on Tuesday, and whatever you answer, why?; Creative Corner...especially for you!; Doom story...The cataclysm begins; Fluffy White Clouds; Nursing on a psychiatric floor; Ember of Empathy; With Feeling; Hurry Monday!; Contradiction versus deception; the eve of destruction; Homo Sapiens; Essence; Straub has not even begun to hit his stride; Good music sometimes underrated; Anothe Bowie hit; Classifieds; Britter\u27s Knights devastate USA Adidas 113-55 in opener; Lady Cobras finish spectacular season with 39-9-1 clipping; Knights down Nonames 100-30; Cobra cagers have flexibility and depth for \u2784-\u2785 campaign; Stater, Phillips supply one-two punch for Cobrashttps://spark.parkland.edu/prospectus_1984/1004/thumbnail.jp

Prospectus, November 28, 1984

SPEAKING COBRAS NAMED COMMUNITY COLLEGE TEAM OF THE YEAR; Central Illinois Vietnam Veterans; Security reports thefts; Parkland election survey told; \u27There are 25 crucified saviors\u27; PC Happenings; Board of Trustees re-elect officers; Who\u27s Who Award nominations listed; Parkland Choral Union to perform \u27Messiah\u27; \u27Messiah\u27 comes again; Life Science Division has open house; Classifieds; Scott advocates negotiation versus doomsday; Creative Corner...especially for you!; Doom Story...The Final Conflict; Through another man\u27s eyes; and that is all; affair; your last veil; living together; Jesus Face; Jesus Died; This Isn\u27t It; wanting; being in love; On Being Forced to Play Backgammon After a Week in the Wilderness; only one; Searls Scouts; Talent scouts looking for fresh talent to work at Busch Gardens in 1985; King\u27s newest not his best; Parkland Community Band performs; Prompters cheer IRT; Cotton releases new solo; Original theatre production at Parkland Written, directed and produced by Lu Snyder; Carol sing is Sunday at UI; High School Quiz Bowl to be broadcast; Howard Player of the Week; Parkland loses on last-second shot; High School Notes; Cobras shoot past Illinois Central, 75-69; Lady Cobras want to schore in \u2784; Koebele plays the leadhttps://spark.parkland.edu/prospectus_1984/1002/thumbnail.jp

Catechol-derivatized poly(vinyl alcohol) as a coating molecule for magnetic nanoclusters

Surface functionalization of superparamagnetic iron oxide nanoparticles (SPIONs) remains indispensable in promoting colloidal stability and biocompatibility. We propose a well-defined and characterized synthesis of a new catechol-functionalized RAFT (reversible addition–fragmentation chain transfer) poly(vinyl alcohol) polymer, which can be anchored onto hydrophobic SPIONs via a one-pot emulsion ligand exchange process. Both single and clustered nanoparticles are obtained and can be separated from each other. As clustered SPIONs are receiving increasing attention, this new macroligand might be of considerable interest for both basic and applied sciences

Presence of antibiotic resistance genes in the receiving environment of Iqaluit's wastewater treatment plant in water, sediment, and clams sampled from Frobisher Bay, Nunavut : a preliminary study in the Canadian Arctic

Antibiotic resistance (AR) is a growing health concern worldwide, and the Arctic represents an understudied region in terms of AR. This study aimed to quantify AR genes from effluent released from a wastewater treatment plant (WWTP) in Iqaluit, Nunavut, Canada, thus creating a baseline reference for future evaluations. Water, sediment, and truncate softshell clam (Mya truncata) tissue samples were compared from the wastewater, the receiving environment of Frobisher Bay, and nearby undisturbed freshwaters. The pharmaceuticals and personal care products (PPCPs) atenolol, carbamazepine, metoprolol, naproxen, sulfapyridine, and trimethoprim were found in the wastewater, but the PPCPs were undetectable in the receiving environment. However, the relative abundances of ARGs were significantly higher in wastewater than in the receiving environment or reference sites. Abundances did not significantly differ in Frobisher Bay compared to undisturbed reference sites. ARGs in clams near the WWTP had similar relative abundances as those from pristine areas. The lack of ARG detection is likely due to Frobisher Bay tides flushing inputs to levels below detection. These data suggest that the WWTP infrastructure does not influence the receiving environment based on the measured parameters; more importantly, further research must elucidate the impact and fate of AR and PPCPs in Arctic communities

Music, computing and health: A roadmap for the current and future roles of music technology for health care and well-being.

Health and self-regulatio

Demonstration of a Hybrid Space Architecture During RIMPAC 2020

The Micro-Satellite Military Utility (MSMU) Project Arrangement (PA) is an agreement under the Responsive Space Capabilities (RSC) Memorandum of Understanding (MOU) that involves the Departments and Ministries of Defence of Australia, Canada, Germany, Italy, the Netherlands, New Zealand, Norway, United Kingdom and United States. MSMU’s charter is to inform a space enterprise that provides military users with reliable access to a broad spectrum of information in an opportunistic environment. Research and Development teams from MSMU partner nations supported Exercise Rim of the Pacific (RIMPAC) 2020 which took place 17 to 31 August 2020 in the Hawaiian region. RIMPAC 2020 provided an opportunity to explore the military utility of a Hybrid Space Architecture (HSA) of satellites including traditional government and commercial satellites, as well as micro-satellites and nanosatellites, by leveraging contributions across the MSMU partner nations. The objective was to continue testing the hypothesis that an HSA, mostly composed of small satellites, can bring significant value to the operational theatre. The MSMU PA partner nations have leveraged several multi-national exercises, with the first being the Exercise RIMPAC 2018. Previous exercises enabled multinational technology advancements, interoperability testing, process refinement, and capability developments to make advancements towards MSMU’s goal to address the warfighter’s need for diverse ISR capabilities. The most recent accomplishment was a major integration effort across mission planning tools, space-based Intelligence, Surveillance and Reconnaissance (ISR) data providers, and exploitation tools. The MSMU team accessed ~256 space-based sensors (EO – Electro Optical, SAR – Synthetic Aperture Radar, AIS – Automatic Identification System) to collect maritime domain and ISR data over a harbor, airfields and open sea. Data was exploited via international channels in order to determine the success rate of capturing pertinent data to be later exploited and disseminated. This paper describes results from the experiment and offers insights into the HSA military utility