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  • Development and Implementation of JetNet : A Decentralized Wireless Sensing Protocol

    Creator:
    Goins, Justin B.
    Abstract:
    Modern sensor network applications are often implemented wirelessly in order to lessen installation costs and reduce deployment times. Unfortunately, these wireless sensor network (WSN) nodes must often rely on batteries or energy harvesting techniques in order to sustain their operation and supply the power needed to maintain communication within the...
    Resource Type:
    Dissertation
    Full Text:
    order to lessen installation costs and reduce deployment times. Unfortunately, these wire- less sensor

  • Electric Machine Capability Characterization for Actuators in Disaster Response Robots

    Creator:
    Li, Qianyun
    Abstract:
    Disaster response robots need to be simultaneously able to survive extreme environment and complete the mission efficiently and robustly. One of the determinants is the performance of the actuators in each joint, which drive the robot to the desired motion accurately. In robotics society, people usually build their robots directly...
    Resource Type:
    Masters Thesis
    Full Text:
    actuated and controlled, the parameter of port defines the total number of sensors, actuators, and initial

  • Ultrashort Near-Infrared Fiber-Optic Sensors for Carbon Dioxide Detection

    Creator:
    Chong, Xinyuan, Kim, Ki-Joong, Ohodnicki, Paul R., Li, Erwen, Chang, Chih-Hung, and Wang, Alan X.
    Abstract:
    In this paper, we report a fiber-optic carbon dioxide (CO₂) near-infrared (IR) absorption sensor with only 8-cm sensing length that is coated with nanoporous metalorganic framework material Cu-BTC (BTC = benzene-1,3, 5-tricarboxylate). The multimode optical fiber was etched by hydrofluoric acid to remove the cladding and part of the core,...
    Resource Type:
    Article
    Full Text:
    of the fiber-optic sensor to alternating Ar and CO2 flows at (a) 1572.5 nm, (b) 1500 nm; Response

  • Optical Sensors using Biological Photonic Crystals

    Creator:
    Squire, Kenneth James
    Abstract:
    This dissertation focuses on the application of diatom frustules, the biosilica shell of an algae possessing physical and photonic properties capable of enhancing optical signals, for the enhancement of optical sensing. In this work, we incorporate diatom frustules into biosensors for signal enhancement and improved target molecule detection. The potential...
    Resource Type:
    Dissertation
    Full Text:
    enhancement using external manipulation (a), chemical crosslinkers (b) and physical spacers (c

  • Polymeric submicron optical ion-selective sensors

    Creator:
    Bychkova, Valeriya
    Abstract:
    Ion-selective polymeric optical sensors – ion optodes – are a promising alternative to ion-selective electrodes and fluorescent dyes for analytical and biological applications, e.g. extra- and intracellular measurements. They are non-toxic, highly selective robust probes for ionic fluxes monitoring. A large-scale fabrication of ion optodes using a solvent displacement method...
    Resource Type:
    Dissertation
    Full Text:
    , M.A. Sensors and Actuators B 1998, 51, 12–16. (12) Clark, H. A., Hoyer, M., Philbert, M.A

  • Data acquisition techniques for next generation wireless sensor networks

    Creator:
    Ehsan, Samina
    Abstract:
    The meteoric rise and prevalent usage of wireless networking technologies for mobile communication applications have captured the attention of media and imagination of public in the recent decade. One such proliferation is experienced in Wireless Sensor Networks (WSNs), where multimedia enabled elements are fused with integrated sensors to empower tightly...
    Resource Type:
    Dissertation
    Full Text:
    - pensive compared to traditional sensors. These sensor nodes can sense, measure, and gather information

  • CMOS-Integrated Single-Element Thermal Flow Sensors

    Creator:
    Clocker, Kyle
    Abstract:
    Flow rate sensors for in situ gas or liquid monitoring typically comprise multiple transducer elements, including a heater and one or more temperature sensors to measure the rate of heat energy removal by the flowing fluid. The need for multiple transducer elements limits feasibility of shrinking these sensors to microfluidic...
    Resource Type:
    Masters Thesis
    Full Text:
    heater is shown in (a), the sensor in channel in (b), and entire assembly in (c

  • Tuning of Peroxiredoxin Catalysis for Various Physiological Roles

    Creator:
    Perkins, Arden, Poole, Leslie B., and Karplus, P. Andrew
    Abstract:
    Peroxiredoxins (Prxs) make up an ancient family of enzymes that are the predominant peroxidases for nearly all organisms and play essential roles in reducing hydrogen peroxide, organic hydroperoxides, and peroxynitrite. Even between distantly related organisms, the core protein fold and key catalytic residues related to its cysteine-based catalytic mechanism have...
    Resource Type:
    Article
    Full Text:
    Catalysis for Various Physiological Roles 1 2 Arden Perkinsa, Leslie B. Pooleb, and P. Andrew

  • Aqueous Synthesis of Tailored ZnO Nanocrsytals, Nanocrystal Assembiles, and Nanostructured Films by Physical Means Enabled by a Continuous Flow Microreactor

    Creator:
    Choi, Chang-Ho and Chang, Chih-hung
    Abstract:
    ZnO nanofilms with four distinctly different morphologies were fabricated by adjusting physical parameters including the flow rate of the solution and rpm of the rotating disk in the continuous flow mircroreactor system while keeping the same chemical precursors, precursor solution concentration, and reaction temperature. Controlled reactive species including colloidal ZnO...
    Resource Type:
    Article
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    Institute and School of 6 Chemical, Biological & Environmental Engineering, Oregon State University

  • Exploring experimental test stand design and operation within a system reliability research methodology

    Creator:
    Koopmans, Michael, 1986-
    Abstract:
    In cases where complex systems routinely experience extreme operating conditions, preventative maintenance is often employed to guard against system failure. Yet, with accessible real-time data and the standard practice becoming prohibitively expensive, the test stand can serve as a vital contributor to the development of system health and reliability estimations....
    Resource Type:
    Masters Thesis
    Full Text:
    , sensors, actuators, and support hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 2.7