364 research outputs found

    Water resources planning/ Grigg

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    xii, 328 hal.; ill.; 23 cm

    Water resources planning/ Grigg

    No full text
    xii, 328 hal.; ill.; 23 cm

    Water resources planning/ Grigg

    No full text
    xii, 328 hal.; ill.; 23 cm

    Illinois in 1837; a sketch descriptive of the situation, boundaries, face of the country, prominent districts, prairies, rivers, minerals, animals, agricultural productions, public lands, plans of internal improvement, manufacturers, &c., of the state of Illinois: also, suggestions to emigrants, sketches of the counties, cities, and principal towns in the state: together with a letter on the cultivation of the prairies, by the Hon. H. L. Ellsworth. To which are annexed the letters from a rambler in the West ...

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    "The publisher is probably the author. It was got up mainly to promote the sale of Illinois lands then owned by John Grigg of Philadelphia."--:Sabin, Bibl. Amer. v.9, no. 34260.On cover: Illinois in 1837 & 8: with a map. Containing, also, the emigrant's guide to the West. Philadelphia, Grigg & Elliot, 1838.Mode of access: Internet.BEIN 1977 2741: Advertisement of the Collegiate and commercial school, New Haven, Con.[!] on verso of p. 143, is dated October, 1837, and is followed by [8] p. of publisher's advertisement. Table of contents repeated on p. [4] of cover. Bookplate of Edwin Stanton Fickes

    Hydraulic and water quality model for a river network

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    A river network system consisting of branches and loops is sometimes complicated by downstream effects from tides, lakes, and because of this, management of water quality, sediment control, and floods, in such rivers is a difficult task. Development of tools to aid in the management decision-making process is an important area of research; ultimately resulting in more reliable results. River behavior can be modeled in detail (one-, two-, or three-dimensional models) with a digital computer using numerical methods. Usually the level of detail is determined by the size of the system. Large system models are restricted in size and detail due to the high cost and storage requirements of the computer. A model was developed to simulate the hydraulic behavior and water quality of a river network on a one-dimensional representation. The two complete St. Venant equations and the transport equation were solved by the finite difference method. The transport equation utilizes the advection, dispersion, and source and sink terms. The system of equations resulting from use of an implicit scheme was solved by a modified Gauss elimination procedure. The model can simulate biochemical oxygen demand, dissolved oxygen, or any other conservative substance. The basic equations are solved; thus, the simulation of other substances can be added to the model by including the mathematical description of the reaction processes in the source and sink terms of the transport equation. The hydraulic module of the model was adjusted and verified with data from the Jacui Delta, Brazil. Good agreement between the calculated results and the observed data resulted. The water quality model was tested under hypothetical conditions for the same Delta in order to demonstrate the utility of the mathematical model in making decisions at the management level. This model is a mathematical method that can be used in large systems of variable complexity to help in understanding their processes, controlling data measurements, and reaching sound management decisions

    Hydrologic aspects of dam safety

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    Organized by the Colorado Water Resources Research Institute and the Office of the State Engineer; edited by Neil S. Grigg.Series number incorrectly printed as 162 on cover.Report of workshop held on November 16, 1989 at Colorado State University

    Choir 02

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    Black and white photograph shows a group portrait of women and men students, in robes and stoles, posing in three rows. Douglas Hall, acccompanist, sits in front of the group at the piano. The back of the photograph reads "WFC choir, 1951-1952, slightly different pose [�] Howler, 1952, 130," "photo by Irvin Grigg," and "WFA." A similar image is shown in The Howler (1952), page 130, with names: (first row) Anne Reed, Jeanette Hughes, Lola Kemp, Patsy Banks, Lib Graeff, Dot Raiford, Nancy Priester, Eleanor Mahoney, Dorothy Henderson; (second row) Sylvia Keene, Mary Nell Reed, Anita Elkins, Mary Charlie Patterson, Priscilla Foster, Marilyn Thomas, Sara Page Jackson, Anne Baker, Peggy West, Peggy Barnes, Margaret Davison, Sadie Frye, Isabelle Knott; and (third row) Jimmy Brisson, Glenn Watson, Joe Beach, Tommy Olive, Neil Gabbert, Chesley Singleton, Jimmy Mize, Wallace Shearon, Carlton Cox, Dan Crouch, Dale Simmons, Jack Boston, Louten Britt, Ken Grigg, Bob Jenkins, Melvin McClelland

    Economic Framework of Smart and Integrated Urban Water Systems

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    Smart and integrated urban water systems have important roles in advancing smart cities, but their contributions go much further by supplying needed public services and connecting other sectors to meet sustainability goals. Achieving integration and gaining access to financing are obstacles to implementing smart water systems and both are implicit in the economic framework of smart cities. Problems in financing the start-up of smart water systems are reported often. The local and diverse nature of water systems is another barrier because an approach that works in one place may not work in another with different conditions. The paper identifies the challenges posed by the economic framework and provides examples from four cities with diverse characteristics. It outlines pathways to advance implementation of smart water systems by improving control strategies, advancing instrumentation and control technologies, and most of all, to help transform cities by raising customer awareness and trust through reliable and useful water information

    Air Pollution and Respiratory Infection: An Emerging and Troubling Association

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    Any reuse of material published in the ATS journals, or archived versions of the accepted author manuscript, should include a reference to the initial publication and a link back to the article on ATSJournals.org
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