444 research outputs found

    Simulation of Changes in Stormwater Quality at Four Potential Flow-Attenuation Sites in the Irondequoit Creek Watershed, Monroe County, New York

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    The potential for improving stormwater quality in the Irondequoit Creek watershed, New York, using flow attenuation basins was analyzed by deterministic simulations of sediment retention. Simulations are based on \u27 plug-flow \u27 concepts and settling of particulate matter according to Stoke \u27s law in (1) temporary storage basins, which retain storm runoff but allow normal runoff to pass unimpeded, and (2) maximum storage basins, which maintain a permanent pool of water. The rate of suspended-sediment retention varies with particle size and detention time. The detention time is a function of basin size, rate of inflow, and type of basin simulated and is greater in maximum storage basins, which produce an 8 to 84% greater suspended-sediment load reduction than temporary storage basins. The predicted annual suspended-sediment-load retention ranges from 28 to 32% in temporary storage basins and from 33 to 60% in maximum storage basins. Total annual loads of phosphorous, lead, and zinc, constituents that are often absorbed to sediment particles, would be reduced by 22 to 59%, 20 to 47% and 16 to 38 %, respectively, according to suspended-sediment simulations. Actual sediment-retention and chemical-retention rates may be less than predicted, however, because (1) the sediment may be resuspended mechanically, (2) anaerobic conditions may cause release of adsorbed constituents into the dissolved phase, and (3) metals may become remobilized in the presence of high concentrations of chlorides from road salts. (USGS

    Jesse James Syndrome

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    Serving Gifted Students in Rural Settings is a superb set of essays that would help practitioners in rural settings develop or enhance services for gifted students. The authors are specialists in Rural Studies, Counseling, and Gifted Education. Dr. Tamra Stambaugh is an Assistant Research Professor for Special Education and the Executive of Programs for Talented Youth at Vanderbilt University. Dr. Susannah M. Wood is an associate professor at the University of Iowa in the Department of Rehabilitation and Counselor Education. The talent of the two editors created this manual for practitioners that brings much-needed guidance for building and enhancing programs to meet the needs of gifted rural students. Leadership in rural settings is a challenge. In my own experience as a rural superintendent and principal, my talent needed to be spread across multiple roles within the district, from expertise in curriculum and instruction to not-so-strong expertise for inspecting school bus routes. Teachers are required to have talent in multiple areas as well. Each day they plan and teach multiple classes and all types of students, from a special needs child to second language learner, an average learner or a very gifted child. Education should meet the needs of all students, but without layers of support, it is a challenge

    Jesse James Syndrome

    Get PDF
    Serving Gifted Students in Rural Settings is a superb set of essays that would help practitioners in rural settings develop or enhance services for gifted students. The authors are specialists in Rural Studies, Counseling, and Gifted Education. Dr. Tamra Stambaugh is an Assistant Research Professor for Special Education and the Executive of Programs for Talented Youth at Vanderbilt University. Dr. Susannah M. Wood is an associate professor at the University of Iowa in the Department of Rehabilitation and Counselor Education. The talent of the two editors created this manual for practitioners that brings much-needed guidance for building and enhancing programs to meet the needs of gifted rural students. Leadership in rural settings is a challenge. In my own experience as a rural superintendent and principal, my talent needed to be spread across multiple roles within the district, from expertise in curriculum and instruction to not-so-strong expertise for inspecting school bus routes. Teachers are required to have talent in multiple areas as well. Each day they plan and teach multiple classes and all types of students, from a special needs child to second language learner, an average learner or a very gifted child. Education should meet the needs of all students, but without layers of support, it is a challenge

    Meeting of the Biological Club

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    Meeting of the Biological Club

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    Meeting of the Biological Club

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    Meetings of the Biological Club

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    Meeting of the Biological Club

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