... Polk County, IA. The line traverses United States Postal Service Zip Codes 50317, 50032, 50021, 50009, and 50035. UP has certified that: (1) No local traffic has moved over the line for at least 2 years...--Exempt Abandonments to abandon a portion of its line of railroad known as the Bondurant Industrial...
Holbrook, John; Autin, Whitney J.; Rittenour, Tammy M.; Marshak, Stephen; Goble, Ronald J.
The earthquake cycles that characterize continental-interior areas that are far from active plate boundaries have proven highly cryptic and difficult to resolve. We used a novel paleoseismic proxy to address this issue. Namely, we reconstructed Holocene Mississippi River channels from maps of floodplain strata in order to identify channel perturbations reflective of major displacement events on the high-hazard and mid-plate Reelfoot thrust fault, New Madrid seismic zone, U.S.A. Only three discrete slip events are currently documented for the Reelfoot fault (˜ AD 900, ˜ AD 1450, and AD 1812). This study extends this record and, thus, illustrates the utility of stratigraphic proxies as paleoseismic tools. We concurrently offer here some of the first quantified response times for tectonically induced channel pattern changes in large alluvial rivers. We identified at least two cycles of pervasive meandering that were interrupted by channel-straightening responses occurring upstream of the Reelfoot fault scarp. These straightening responses initiated at 2244 BC +/- 269 to 1620 BC +/- 220 and ˜ AD 900, respectively, and each records initiation of a period of Reelfoot fault slip after millennia of relative tectonic quiescence. The second (or New Madrid) straightening response was triggered by the previously known ˜ AD 900 fault slip event, and this initial low sinuosity has been protracted until the modern day by the latter ˜ AD 1450 and AD 1812 events. The first (or Bondurant) straightening response began a period of several hundred to ˜ 1400 years of low river sinuosity which evidences a similar period of multiple recurrent displacement events on the Reelfoot fault. These Bondurant events predate the existing paleoseismic record for the Reelfoot fault. These data offer initial evidence that slip events on the Reelfoot fault were temporally clustered on millennial scales and, thus, offers the first direct evidence for millennial-scale clustering of earthquakes on a
Pak-Tao Leung; Carl H. Gibson
-mixing-rates toward the sea surface so that the submerged waste-field could be detected from a space satellite (Bondur and Filatov, 2003).
Ikeda, J S; BonDurant, R H; Campero, C M; Corbeil, L B
Bovine trichomoniasis is a sexually transmitted disease caused by the flagellated protozoan Tritrichomonas foetus. A protective surface antigen was previously identified and immunoaffinity purified from T. foetus isolate D1 with cross-reactive monoclonal antibodies (MAbs) TF1.15 and TF1.17 (BonDurant, R. H., R. R. Corbeil, and L. B. Corbeil, Infect. Immun. 61:1385-1394, 1993). This antigen elicited antibody responses in the serum and cervicovaginal mucus of heifers. Thus, it may be useful as an immunodiagnostic reagent as well as a subunit vaccine. Conservation of the antigen in all strains would be crucial for either application. We investigated the conservation of this antigen among 36 isolates of T. foetus from Argentina, Costa Rica, and the United States using MAbs TF1.15 and TF1.17 in an enzyme-linked immunosorbent assay. MAb TF1.17 reacted with 32 of the 36 isolates, whereas MAb TF1.15 reacted with all of the isolates tested. One of the isolates which did not react with MAb TF1.17 (i.e., D1#3) was investigated further by Western blotting (immunoblotting) to determine the reason for the lack of reactivity with one of the two cross-reactive MAbs. The antigenic band that was reactive with MAb TF1.15 had a molecular mass slightly lower than that of the corresponding band from isolate D1, which reacted with both MAbs TF1.15 and TF1.17. Thus, at least a major portion of the antigen appeared to be conserved. This was confirmed in a study of heifers infected with isolate D1#3. The vaginal immunoglobulin A antibodies of these infected heifers reacted with the antigen of isolate D1 that was immunoaffinity purified with MAb TF1.17. Therefore, even though the epitope recognized by MAb TF1.17 was missing in the challenge isolate (D1#3), the heifers developed an immune response to the rest of the molecule. These results indicate that the major portion of the previously described protective antigen is conserved in different isolates of T. foetus. This portion contains the