172,818 research outputs found

    Rott, C.

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    The Palisades, Garretson SD, Minnehaha County

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    9 x 11 print, red cliffs overlooking water, there are trees along the edge of the photographTowns Fort Pierre - Gary P15 Tab G Poster board Garretson P15 [stamp] Property of: South Dakota State Historical Society Pierre, South Dakota [stamp] Give photo credit to: South Dakota State Historical Society.The Palisades Garretson So Dak Photo by C. J. Rott. Garretson. So. Dak

    Jesse James Cave, Garretson SD, Minnehaha County

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    9 x 11 print, dark opening in cliffs above waterTowns Fort Pierre - Gary P15 Tab G Poster board Garretson P15 [stamp] Property of: South Dakota State Historical Society Pierre, South Dakota [stamp] Give photo credit to: South Dakota State Historical Society.Jesse James Cave Garretson, So. Dak. Photo by C. J. Rott. Garretson. So. Dak

    Ecologically derived immission values for phosphorus in rivers - The Rott case study

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    S.271-285 : Abb.,Tab.,Lit.Flow regulations of rivers result in elevated retention times and in subsequent eutrophication effects, such as algal mass development. These phenomena were studied in a small river and its shallow flood retention basin (River Rott, Lower Bavaria) from 1982 to 1988. Algal mass developments (median value at the outlet: 125, 90 percentile > 300 myg/l Chlorophyll = Chl) significantly exceed those in the Rivers Ruhr and Main in both in concentration and duration. The latter rivers are similar in nutrient contents. The main reasons for this deviation in the River Rott system are thought to be the shallowness of the flood retention basin and the high content of riverine solids in the water. We assume that the latter fact favours diatom dominance throughout the whole year. The Phosphorus limits which control eutrophication effects for the Rivers Ruhr and Main are far too high for the River Rott and will not reduce algal mass development in this system

    Split Rock River, Garretson SD, Minnehaha County

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    9 x 10.5 print, cliffs overlooking water, there are open fields in the backgroundTowns Fort Pierre - Gary P15 Tab G Poster board Garretson P15 [stamp] Property of: South Dakota State Historical Society Pierre, South Dakota [stamp] Give photo credit to: South Dakota State Historical Society.The Scenic Split Rock River Garretson, S. D. Photo by C. J. Rott. Garretson. S. D

    Split Rock Park Dam, Garretson SD, Minnehaha County

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    9 x 11 print, terraced low head dam of Sioux quartzite and pipestoneTowns Fort Pierre - Gary P15 Tab G Poster board Garretson P15 [stamp] Property of: South Dakota State Historical Society Pierre, South Dakota [stamp] Give photo credit to: South Dakota State Historical Society.Photo by C. J. Rott, Garretson S. Dak. Split Rock Park Dam Garretson, S. Dak

    Sugarcane Mosaic

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    Mosaic’s most distinctive symptom is a pattern of contrasting shades of green, often islands of normal green on a background of paler green or yellowish chlorotic areas on the leaf blade. It had not been a problem in Florida until 1996, when it was observed on CP72-2086, a major commercial cultivar, near the intersection of Hatton Highway and US 98. Presently, because of the limited acreage of CP72-2086, the disease is only a potential threat. This revised 3-page fact sheet was written by P. Rott, J. C. Comstock, R. A. Gilbert, and H. S. Sandhu, and published by the UF Department of Agronomy, March 2015. (Photo: Philippe Rott, UF/IFAS)

    Sugarcane Mosaic

    No full text
    Mosaic’s most distinctive symptom is a pattern of contrasting shades of green, often islands of normal green on a background of paler green or yellowish chlorotic areas on the leaf blade. It had not been a problem in Florida until 1996, when it was observed on CP72-2086, a major commercial cultivar, near the intersection of Hatton Highway and US 98. Presently, because of the limited acreage of CP72-2086, the disease is only a potential threat. This revised 3-page fact sheet was written by P. Rott, J. C. Comstock, R. A. Gilbert, and H. S. Sandhu, and published by the UF Department of Agronomy, March 2015. (Photo: Philippe Rott, UF/IFAS)

    Notes on contraposing conditionals

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    The contraposing conditional 'If A then C' is defined by the conjunction of A > C and ~C > ~A, where > is a conditional of the kind studied by Stalnaker, Lewis and others. This idea has recently been explored, under the name 'evidential conditional', in a sequence of papers by Crupi and Iacona and Raidl, and it has been found of independent interest by Booth and Chandler. I discuss various properties of these conditionals and compare them to the 'difference-making conditionals' studied by Rott, which are defined by the conjunction of A > C and not ~A > C. I raise some doubts about Crupi and Iacona's claim that contraposition captures the idea of evidence or support
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