234 research outputs found

    ARCHAEOLOGICAL INVESTIGATIONS AT THE QUINCY MINING COMPANY OFFICE (TRACT 102-04) THE QUINCY NATIONAL GUARD ENCAMPMENT (TRACT 102-03). KEWEENAW NATIONAL HISTORICAL PARK, HOUGHTON COUNTY, MICHIGAN.

    Get PDF
    This report presents the results of preliminary archaeological research at the Quincy Unit as part of the Cooperative Agreement P18AC00178 between the United States Department of Interior/National Park Service and Michigan Technological University titled An Inventory of Historic Archaeological Resources at Keweenaw National Historical Park (KEWE) and Isle Royale National Park (ISRO). Archaeological investigation concentrated on the lot housing the Quincy Mine Office and the location of the Quincy Michigan National Guard encampment located across US-41 from the No.2 Rockhouse, used during the Copper Country Miners’ Strike of 1913-14. This is a multi-year project, primarily looking at the Quincy Mining Company property in an assessment of cultural resources in accordance with Section 110 of the National Historical Preservation Act. This is crucial information to the development and interpretation of this area in the future

    Effects of Acid Treatment on the SEM-EDX Characteristics of Kaolin Clay

    Get PDF
    Raw kaolin was refluxed by sulphuric acid in variable concentrations of 2 M, 4 M, 6 M and 8 M. The morphology and elemental compositions of the acid-leached kaolin were analyse by Field Scanning Electron Microscopy (FESEM) and Energy Dispersive X-ray analysis (EDX) respectively. The disintegration and leaching of Al3+ ions of the clay are determined by FESEM studies. The acid treatment increases the silicon content and decreases aluminium content as revealed by EDX analysis. The leaching of Al3+ ions increases with gradual increase in concentration of the acid. Therefore, kaolin reflux with acid at lower strength (2 M and 4 M) are more dispersed and more industrially useful than that which is treated at higher acid strength

    A SELDI-TOF approach to ecotoxicology: Comparative profiling of low molecular weight proteins from a marine diatom exposed to CdSe/ZnS quantum dots

    Get PDF
    Quantum dots (QDs), namely semiconductor nanocrystals, due to their particular optical and electronic properties, have growing applications in device technology, biotechnology and biomedical fields. Nevertheless, the possible threat to human health and the environment have attracted increasing attention as the production and applications of QDs increases rapidly while standard evaluation of safety lags. In the present study we performed proteomic analyses, by means of 2D gel electrophoresis and Surface Enhanced Laser Desorption Ionization-Time of Flight-Mass Spectrometry (SELDI-TOF-MS). We aimed to identify potential biomarkers of exposure to CdSe/ZnS quantum dots. The marine diatom Phaeodactylum tricornutum exposed to 2.5nM QDs was used as a model system. Both 2DE and SELDI showed the presence of differentially expressed proteins. By Principal Component Analysis (PCA) we were able to show that the differentially expressed proteins can discriminate between exposed and not exposed cells. Furthermore, a protein profile specific for exposed cells was obtained by SELDI analysis. To our knowledge, this is the first example of the application of SELDI technology to the analysis of microorganisms used as biological sentinel model of marine environmental pollution

    Synthesis, Characterization, Photophysical And Computational Study Of Schiff Base Ligands And Their Zn(II) Complexes [QD1-999].

    Get PDF
    Ligan bes Schiff dan kompleks Zn(II)nya telah menunjukkan kebolehan yang baik untuk pelbagai aplikasi disebabkan sifat-sifat dalam keadaan asas dan terujanya yang menarik. Schiff base ligands and their Zn(II) complexes have shown good potentials in a range of applications due to their interesting ground and excited state properties

    Optimizing Completion Time and Energy Consumption in a Bidirectional Relay Network

    Get PDF
    Consider a wireless network with multiple sources and destinations, where the amount of data of each source node is finite. An interesting question is what is the shortest completion time, i. e. the time required that all data from the sources gets to the respective destinations. A similar question arises for the minimal required energy. While the requirement for minimal energy consumption is obvious, the shortest completion time is relevant when certain multi-node network needs to reserve the wireless medium in order to carry out the data exchange among its nodes. The completion time/energy consumption required for multiple flows depends on the current channel realizations, transmission methods used and, notably, the relation between the data sizes of different source nodes. In this paper we investigate the shortest completion time and minimal energy consumption in a two-way relay wireless network. The system applies optimal time multiplexing of several known transmission methods, including one-way relaying and wireless network coding (WNC). We show that when the relay applies Amplify-and-Forward (AF), both minimizations are linear optimization problems. On the other hand, when the relay uses Decode-and-Forward (DF), each of them is a quadratic optimization problem. The results show that, for given channel realizations, there is an optimal ratio of the data packets at the sources to obtain minimal completion time or energy consumption. This can be used as a guidance for the nodes to apply traffic shaping. In most cases, DF leads to shorter completion time and energy consumption compared to AF. ? 2012 IEEE.EI

    Reference Question Data Mining

    Get PDF
    This exploratory study investigated the feasibility of using reference questions as an important tool in the construction of study guides, instructional outreach, and collection development at a small, four-year university in Lake Charles, Louisiana. The premise for the study was based on the assumption that the content of the reference question and class from which the question came provide more valuable information than the metadata normally captured within reference classification systems (e.g., directional, research). Reference question subjects received at the reference desk were recorded over six months by the reference staff. The authors then analyzed and classified the data to discover patterns in collection use. The resulting report was then disseminated to the reference, collection development, and instructional outreach departments. The findings reveal that this method of reference data classification and timely reporting provides an excellent reference for planning in these library departments

    Program Quality Review - Department of Chemistry (2000)

    Get PDF
    Program Quality Review measuring library support for the Department of Chemistry. Tracks library expenditures on materials serving chemistry and related topics, books added and circulated by subject with peer comparisons, scholarly books published by subject, and URI Library holdings of top-ranked journals

    Financial Literacy In Developing Countries

    Get PDF
    This paper includes two parts: a guide to implementing a financial literacy program as well as a survey to evaluate the effectiveness of the program. The guide was developed through a literature review on financial literacy interventions in developing countries. Best practices on enrollment, training, and support post training are included. Generally, there is heterogeneity in the results of trainings but those which were the most successful were targeted to the specific needs of different socioeconomic groups. The survey is intended for use by Tostan, a nonprofit in Senegal, and other nonprofits who want to evaluate their financial literacy programs. The survey uses best practices in development economics to try and measure how financial literacy levels, behavior, and wellbeing change depending on involvement in an intervention
    corecore