1,313 research outputs found
Oregon Commerce and Compliance Division safety action plan, final report
No full textby Jason C. Anderson (Ph.D., Research Associate, Portland State University) and Sal Hernandez (Ph.D., Associate Professor, Oregon State University) and Doug Hedlund (MBA, Hedlund Consulting, LLC) for Oregon Department of Transportation Commerce and Compliance Division.Title from PDF cover (viewed on February 10, 2021).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references (page 39).Mode of access: Internet from the Oregon Government Publications Collection.Text in English
H\ue5kan Lindqvist
No full textIntroduction of the Architect and researcher H\ue5kan Lindqvist and of a special section, 58 pages long, on the Gothenburg architect Hans Hedlund (1855-1931), written mainly by Lindqvist, but also by Prof Claes Caldenby
Team H&H RC Baja Drivetrain
No full textA need for a drivetrain and steering system that could provide locomotion and directional control for the H&H RC Baja racecar was needed. The RC Baja event is a competition hosted yearly by the CWU ASME club in which teams of engineering students compete against each other to test the effectiveness of the respective vehicle designs. The car needs to be able to compete in three events: a drag race, slalom course, and a Baja course event. This was accomplished by designing and manufacturing several parts from different materials utilizing a range of manufacturing techniques to produce sub-assemblies and that made up the drivetrain systems. The system was constructed using a variety of methods including; machining of parts, 3d printing, and off the shelf parts. The RC car was designed in SolidWorks a parametric modeling software to ensure manufactured parts were easy to assemble the systems was designed using; material analysis, statics, and concepts from mechanical design, across 12 unique engineering analysis to guide the engineering decisions and manufacturing processes and ensure the car would meet all requirements set forth by not drivetrain engineer but also the suspension and chassis engineer. The results of this work were a vehicle capable of a top speed of 25mph, climbing inclines up to 30 degrees and drivetrain assembly weighing less than 4 pounds
The expanding distribution of Ixodes scapularis and associated pathogens in the Chicago, IL, metropolitan area
No full textThe geographic distribution of Lyme disease in the United States has increased considerably since the first description of the illness in the 1970s. The primary vector of Lyme disease, the tick Ixodes scapularis (Acari: Ixodidae), has expanded its range concurrently with the disease including into urban landscapes. To investigate landscape factors that may influence the colonization of I. scapularis and its associated pathogens in an urban ecosystem, 45 sites were sampled along three transects spanning the urban-to-rural human land use gradient in the Chicago, Illinois, metropolitan area. I collected four species of ticks (88% were I. scapularis) which exhibited variable infection rates for six pathogens, including Borrelia burgdorferi, the causative agent of Lyme disease, and B. lonestari and B. miyamotoi, both reported for the first time in Illinois. Logistic regression modeling indicated the presence of I. scapularis was positively correlated with forest land cover and negatively correlated with developed land cover, while the presence of B. burgdorferi was positively correlated with forest land cover. Neither the presence of the tick or the pathogen were correlated with distance to the nearest major river way. This study suggests that the range of I. scapularis and its pathogens have expanded in the Chicago metropolitan area since previous studies were conducted, including into forested urban areas near to the urban core. As tick and pathogen continue to colonize new areas, active monitoring and increased public education will be needed to protect vulnerable human populations.Submission published under a 24 month embargo labeled 'U of I only', the embargo will last until 2017-08-01The student, Tyler Hedlund, accepted the attached license on 2015-07-20 at 11:56.The student, Tyler Hedlund, submitted this Thesis for approval on 2015-07-20 at 12:04.This Thesis was approved for publication on 2015-07-20 at 13:08.DSpace SAF Submission Ingestion Package generated from Vireo submission #8563 on 2015-09-29 at 15:00:52Made available in DSpace on 2015-09-29T20:50:21Z (GMT). No. of bitstreams: 2
HEDLUND-THESIS-2015.pdf: 911023 bytes, checksum: 7ce00e549e59a8167bb59c44020bdc62 (MD5)
LICENSE.txt: 4210 bytes, checksum: 7c334b108421ce1b74e89a3f896b6907 (MD5)
Previous issue date: 2015-07-20Embargo set by: Seth Robbins for item 89500
Lift date: 2017-09-29T20:50:34Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 89500 on 2017-09-30T09:15:26Z
Episturmian words: a survey
No full textIn this paper, we survey the rich theory of infinite episturmian words which generalize to any finite alphabet, in a rather resembling way, the well-known family of Sturmian words on two letters. After recalling definitions and basic properties, we consider episturmian morphisms that allow for a deeper study of these words. Some properties of factors are described, including factor complexity, palindromes, fractional powers, frequencies, and return words. We also consider lexicographical properties of episturmian words, as well as their connection to the balance property, and related notions such as finite episturmian words, Arnoux-Rauzy sequences, and "episkew words" that generalize the skew words of Morse and Hedlund
Polytype control of MoS2 using chemical bath deposition
No full textMolybdenum disulfide (MoS₂) has a wide range of applications from electronics to catalysis. While the properties of single-layer and multilayer MoS₂ films are well understood, controlling the deposited MoS₂ polytype remains a significant challenge. In this work, we employ chemical bath deposition, an aqueous deposition technique, to deposit large area MoS₂ thin films at room temperature. Using Raman spectroscopy and x-ray photoelectron spectroscopy, we show that the deposited MoS₂ polytype can be changed from semiconducting 2H MoS₂ on hydrophobic -CH₃ and -CO₂C₆F₅ terminated self-assembled monolayers (SAMs) to semimetallic 1T MoS₂ on hydrophilic -OH and -COOH terminated SAMs. The data suggest that the deposition of MoS₂ polytypes is controlled by the substrate surface energy. High surface energy substrates stabilize 1T MoS₂ films, while 2H MoS₂ is deposited on lower surface energy substrates. This effect appears to be general enabling the deposition of different MoS₂ polytypes on a wide range of substrates. ©2019 Author(s).National Science Foundation (Grant No. CHE 1708258).Erik Jonsson School of Engineering and Computer ScienceSchool of Natural Sciences and Mathematic
Family I. Chthoniobacteraceae fam. nov.
No full textRod-shaped or pleomorphic cells that stain Gram-negative. Nonmotile. Nonsporeforming. Includes free-living micro-organisms in soil and symbionts of nematodes. Free-living organisms are aerobic and saccharolytic and use predominantly mono-, di-, and polysaccharides and their derivatives. Menaquinones are the only respiratory quinones detected, primarily MK-10 and MK-11
Family I. Victivallaceae fam. nov.
No full textThe phylum Verrucomicrobia is defined by phylogenetic analysis of 16S rRNA gene sequences of cultured strains and environmental clone sequences retrieved from a wide variety of environments. All cultivated members of the phylum stain Gram-negative; many have intracellular compartments bounded by internal membranes. Menaquinones are the dominant respiratory quinones; ubiquinones have not been detected. Most members are chemoheterotrophs, preferring carbohydrates including complex natural polysaccharides. Recently isolated members are thermoacidophilic methylotrophs
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