Sample records for yuma clapper rail

  1. Distribution of two western clapper rail races as determined by responses to taped calls

    USGS Publications Warehouse

    Tomlinson, R.E.; Todd, R.L.

    1973-01-01

    During 1969 and 1970, surveys of the endangered Yuma Clapper Rail were conducted using taped calls to elicit responses from the birds. During the two summers, more than 158 Yuma clappers were located in cattailtule marshes along the Colorado River south of Needles, California, to the International Boundary, a distance of about 240 miles. Clappers (probably of the same race) were also found in estuarian marshes of the Colorado River Delta of Mexico; in the Salton Sea; in two freshwater marsh areas near Phoenix, Arizona; and in two freshwater marshes adjacent to the lower Gila River near Tacna, Arizona.....Populations of Sonora Clapper Rails were discovered as permanent residents in five separate mangrove swamps along the west coast of Mexico in the vicinity of Kino Bay, Sonora. These observations were farther north than any heretofore reported for the race R. l. rhizophorae, and the swamps also represent the extreme northward limit of mangroves in Sonora.....During the winter, Yuma clappers did not respond to taped calls north of the International Boundary, whereas clappers along the coast of Sonora readily answered the calls during the same period of time. We conclude that most Yuma Clapper Rails migrate from their summer habitat along the Colorado River in September and do not return to the breeding areas until late April.

  2. Multi-species call-broadcast improved detection of endangered Yuma clapper rail compared to single-species call-broadcast

    USGS Publications Warehouse

    Nadeau, Christopher P.; Conway, Courtney J.; Piest, Linden; Burger, William P.

    2013-01-01

    Broadcasting calls of marsh birds during point-count surveys increases their detection probability and decreases variation in the number of birds detected across replicate surveys. However, multi-species monitoring using call-broadcast may reduce these benefits if birds are reluctant to call once they hear broadcasted calls of other species. We compared a protocol that uses call-broadcast for only one species (Yuma clapper rail [Rallus longirostris yumanensis]) to a protocol that uses call-broadcast for multiple species. We detected more of each of the following species using the multi-species protocol: 25 % more pied-billed grebes, 160 % more American bitterns, 52 % more least bitterns, 388 % more California black rails, 12 % more Yuma clapper rails, 156 % more Virginia rails, 214 % more soras, and 19 % more common gallinules. Moreover, the coefficient of variation was smaller when using the multi-species protocol: 10 % smaller for pied-billed grebes, 38 % smaller for American bitterns, 19 % smaller for least bitterns, 55 % smaller for California black rails, 5 % smaller for Yuma clapper rails, 38 % smaller for Virginia rails, 44 % smaller for soras, and 8 % smaller for common gallinules. Our results suggest that multi-species monitoring approaches may be more effective and more efficient than single-species approaches even when using call-broadcast.

  3. Fire helps restore natural disturbance regime to benefit rare and endangered marsh birds endemic to the Colorado River.

    PubMed

    Conway, Courtney J; Nadeau, Christopher P; Piest, Linden

    2010-10-01

    Large flood events were part of the historical disturbance regime within the lower basin of most large river systems around the world. Large flood events are now rare in the lower basins of most large river systems due to flood control structures. Endemic organisms that are adapted to this historical disturbance regime have become less abundant due to these dramatic changes in the hydrology and the resultant changes in vegetation structure. The Yuma Clapper Rail is a federally endangered bird that breeds in emergent marshes within the lower Colorado River basin in the southwestern United States and northwestern Mexico. We evaluated whether prescribed fire could be used as a surrogate disturbance event to help restore historical conditions for the benefit of Yuma Clapper Rails and four sympatric marsh-dependent birds. We conducted call-broadcast surveys for marsh birds within burned and unburned (control) plots both pre- and post-burn. Fire increased the numbers of Yuma Clapper Rails and Virginia Rails, and did not affect the numbers of Black Rails, Soras, and Least Bitterns. We found no evidence that detection probability of any of the five species differed between burn and control plots. Our results suggest that prescribed fire can be used to set back succession of emergent marshlands and help mimic the natural disturbance regime in the lower Colorado River basin. Hence, prescribed fire can be used to help increase Yuma Clapper Rail populations without adversely affecting sympatric species. Implementing a coordinated long-term fire management plan within marshes of the lower Colorado River may allow regulatory agencies to remove the Yuma Clapper Rail from the endangered species list.

  4. Fire helps restore natural disturbance regime to benefit rare and endangered marsh birds endemic to the Colorado River

    USGS Publications Warehouse

    Conway, C.J.; Nadeau, C.P.; Piest, L.

    2010-01-01

    Large flood events were part of the historical disturbance regime within the lower basin of most large river systems around the world. Large flood events are now rare in the lower basins of most large river systems due to flood control structures. Endemic organisms that are adapted to this historical disturbance regime have become less abundant due to these dramatic changes in the hydrology and the resultant changes in vegetation structure. The Yuma Clapper Rail is a federally endangered bird that breeds in emergent marshes within the lower Colorado River basin in the southwestern United States and northwestern Mexico. We evaluated whether prescribed fire could be used as a surrogate disturbance event to help restore historical conditions for the benefit of Yuma Clapper Rails and four sympatric marsh-dependent birds. We conducted call-broadcast surveys for marsh birds within burned and unburned (control) plots both pre-and post-burn. Fire increased the numbers of Yuma Clapper Rails and Virginia Rails, and did not affect the numbers of Black Rails, Soras, and Least Bitterns. We found no evidence that detection probability of any of the five species differed between burn and control plots. Our results suggest that prescribed fire can be used to set back succession of emergent marshlands and help mimic the natural disturbance regime in the lower Colorado River basin. Hence, prescribed fire can be used to help increase Yuma Clapper Rail populations without adversely affecting sympatric species. Implementing a coordinated long-term fire management plan within marshes of the lower Colorado River may allow regulatory agencies to remove the Yuma Clapper Rail from the endangered species list. ?? 2010 by the Ecological Society of America.

  5. Loss of genetic diversity in sea otters (Enhydra lutris) associated with the fur trade of the 18th and 19th centuries

    USGS Publications Warehouse

    Larson, S.; Jameson, R.; Etnier, M.; Flemings, M.; Bentzen, P.

    2002-01-01

    During 1969 and 1970, surveys of the endangered Yuma Clapper Rail were conducted using taped calls to elicit responses from the birds. During the two summers, more than 158 Yuma clappers were located in cattailtule marshes along the Colorado River south of Needles, California, to the International Boundary, a distance of about 240 miles. Clappers (probably of the same race) were also found in estuarian marshes of the Colorado River Delta of Mexico; in the Salton Sea; in two freshwater marsh areas near Phoenix, Arizona; and in two freshwater marshes adjacent to the lower Gila River near Tacna, Arizona.....Populations of Sonora Clapper Rails were discovered as permanent residents in five separate mangrove swamps along the west coast of Mexico in the vicinity of Kino Bay, Sonora. These observations were farther north than any heretofore reported for the race R. l. rhizophorae, and the swamps also represent the extreme northward limit of mangroves in Sonora.....During the winter, Yuma clappers did not respond to taped calls north of the International Boundary, whereas clappers along the coast of Sonora readily answered the calls during the same period of time. We conclude that most Yuma Clapper Rails migrate from their summer habitat along the Colorado River in September and do not return to the breeding areas until late April.

  6. Distribution and abundance of the Yuma clapper rail (Rallus longirostris yumanensis) in the Colorado River delta, México

    USGS Publications Warehouse

    Hinojosa-Huerta, Osvel; DeStefano, Stephen; Shaw, William W.

    2001-01-01

    We estimated the abundance of Yuma clapper rails in the Ciénega de Santa Clara and determined the distribution of the subspecies in the Colorado River delta region in México. The maximum estimate of abundance was 6629 individuals (95% C.I. 4859–8399), assuming a response rate by rails to taped calls of 60%. Rails were widely distributed in the delta, occupying almost all marshlands dominated by cattail. As this is an endangered subspecies shared by México and the U.S., the conservation of the delta ecosystem should be the interest of both countries, especially when water management decisions upstream in the U.S. have an impact over natural areas downstream in México.

  7. 77 FR 43107 - Endangered and Threatened Species Permit Applications

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-23

    ... presence/absence surveys for southwestern willow flycatcher (Empidonax traillii extimus) within Arizona...), southwestern willow flycatcher (Empidonax trailii extimus), and Yuma clapper rail (Rallus longirostris... conduct presence/absence surveys and collect plant material (leaves, flowers) of white bladderpod...

  8. 75 FR 6697 - Endangered and Threatened Wildlife and Plants; Draft Yuma Clapper Rail (Rallus longirostris...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-10

    ...-term contracts for water supplies at Sonny Bono Salton Sea National Wildlife Refuge and Imperial State... species is completed and protective measures implemented if needed; and a secure water supply for the..., directed research on habitat and threats, efforts to obtain secure water supplies for important habitats...

  9. Sexing California Clapper Rails using morphological measurements

    USGS Publications Warehouse

    Overton, Cory T.; Casazza, Michael L.; Takekawa, John Y.; Rohmer, Tobias M.

    2009-01-01

    California Clapper Rails (Rallus longirostris obsoletus) have monomorphic plumage, a trait that makes identification of sex difficult without extensive behavioral observation or genetic testing. Using 31 Clapper Rails (22 females, 9 males), caught in south San Francisco Bay, CA, and using easily measurable morphological characteristics, we developed a discriminant function to distinguish sex. We then validated this function on 33 additional rails. Seven morphological measurements were considered, resulting in three which were selected in the discriminate function: culmen length, tarsometatarsus length, and flat wing length. We had no classification errors for the development or testing datasets either with resubstitution or cross-validation procedures. Male California Clapper Rails were 6-22% larger than females for individual morphological traits, and the largest difference was in body mass.  Variables in our discriminant function closely match variables developed for sexing Clapper Rails of Gulf Coast populations. However, a universal discriminant function to sex all Clapper Rail subspecies is not likely because of large and inconsistent differences in morphological traits among subspecies. 

  10. Dietary mercury exposure to endangered California Clapper Rails in San Francisco Bay.

    PubMed

    Casazza, Michael L; Ricca, Mark A; Overton, Cory T; Takekawa, John Y; Merritt, Angela M; Ackerman, Joshua T

    2014-09-15

    California Clapper Rails (Rallus longirostris obsoletus) are an endangered waterbird that forage in tidal-marsh habitats that pose risks from mercury exposure. We analyzed total mercury (Hg) in six macro-invertebrate and one fish species representing Clapper Rail diets from four tidal-marshes in San Francisco Bay, California. Mercury concentrations among individual taxa ranged from lowest at Colma Creek (mean range: 0.09-0.2 μg/g dw) to highest at Cogswell (0.2-0.7), Laumeister (0.2-0.9) and Arrowhead Marshes (0.3-1.9). These spatial patterns for Hg matched patterns reported previously in Clapper Rail blood from the same four marshes. Over 25% of eastern mudsnails (Ilyanassa obsolete) and staghorn sculpin (Leptocottus armatus) exceeded dietary Hg concentrations (ww) often associated with avian reproductive impairment. Our results indicate that Hg concentrations vary considerably among tidal-marshes and diet taxa, and Hg concentrations of prey may provide an appropriate proxy for relative exposure risk for Clapper Rails. Copyright © 2014. Published by Elsevier Ltd.

  11. Dietary mercury exposure to endangered California Clapper Rails in San Francisco Bay

    USGS Publications Warehouse

    Casazza, Michael L.; Ricca, Mark A.; Overton, Cory T.; Takekawa, John Y.; Merritt, Angela M.; Ackerman, Joshua T.

    2015-01-01

    California Clapper Rails (Rallus longirostris obsoletus) are an endangered waterbird that forage in tidal-marsh habitats that pose risks from mercury exposure. We analyzed total mercury (Hg) in six macro-invertebrate and one fish species representing Clapper Rail diets from four tidal-marshes in San Francisco Bay, California. Mercury concentrations among individual taxa ranged from lowest at Colma Creek (mean range: 0.09–0.2 μg/g dw) to highest at Cogswell (0.2–0.7), Laumeister (0.2–0.9) and Arrowhead Marshes (0.3–1.9). These spatial patterns for Hg matched patterns reported previously in Clapper Rail blood from the same four marshes. Over 25% of eastern mudsnails (Ilyanassa obsolete) and staghorn sculpin (Leptocottus armatus) exceeded dietary Hg concentrations (ww) often associated with avian reproductive impairment. Our results indicate that Hg concentrations vary considerably among tidal-marshes and diet taxa, and Hg concentrations of prey may provide an appropriate proxy for relative exposure risk for Clapper Rails.

  12. Endangered light-footed clapper rail affects parasite community structure in coastal wetlands

    USGS Publications Warehouse

    Whitney, Kathleen L.; Hechinger, Ryan F.; Kuris, Armand M.; Lafferty, Kevin D.

    2007-01-01

    An extinction necessarily affects community members that have obligate relationships with the extinct species. Indirect or cascading effects can lead to even broader changes at the community or ecosystem level. However, it is not clear whether generalist parasites should be affected by the extinction of one of their hosts. We tested the prediction that loss of a host species could affect the structure of a generalist parasite community by investigating the role of endangered Light-footed Clapper Rails (Rallus longirostris levipes) in structuring trematode communities in four tidal wetlands in southern California, USA (Carpinteria Salt Marsh, Mugu Lagoon) and Mexico (Estero de Punta Banda, Bahia Falsa–San Quintín). We used larval trematode parasites in first intermediate host snails (Cerithidea californica) as windows into the adult trematodes that parasitize Clapper Rails. Within and among wetlands, we found positive associations between Clapper Rails and four trematode species, particularly in the vegetated marsh habitat where Clapper Rails typically occur. This suggests that further loss of Clapper Rails is likely to affect the abundance of several competitively dominant trematode species in wetlands with California horn snails, with possible indirect effects on the trematode community and changes in the impacts of these parasites on fishes and invertebrates.

  13. The status of the light-footed clapper rail

    USGS Publications Warehouse

    Wilbur, S.R.

    1974-01-01

    Only 12 California marsh areas are presently believed to be inhabited by the Light-footed Clapper Rail, and eight of these appear to support only 5-15 birds apiece. Tentative estimates for the other four are: Anaheim Bay 200, Upper Newport 30-35, Los Penasquitos 30, and Tijuana Estuary 150. These estimates, admittedly very rough, indicate a total Light-footed Rail population on only about 500 birds. Recognizing that rails are secretive and hard to inventory, the actual count could be somewhat higher, but I feel it is most unlikely that the number could be more than 750 birds altogether. Reductions in Light-footed Clapper Rail populations can be attributed almost entirely to loss of habitat. An estimated 26,000 acres of saltmarsh once existed between Santa Barbara and the Mexican border. At present there are approximately 8500 acres, much of which has been degraded by pollution, water diversion, and restriction of tidal flow. Of those areas currently occupied by Clapper Rails, few can be considered to have a very secure future. Of the four major areas only Anaheim Bay appears to be relatively safe from future habitat destruction. Tijuana Estuary, Los Penasquitos Lagoon, and Upper Newport Bay are all threatened by commercial developments that could reduce or destroy local rail populations. I have not visited Baja California, but I believe there is still a substantial population of Clapper Rails in the marshes around San Quintin Bay. Taxonomists do not agree on the subspecific identity of these birds, but some feel they are representatives of the Light-footed race. If so, it is fortunate to have a relatively secure (for now) reservoir of these birds, but whether the Light-footed Clapper Rail survives within the United States may well be decided within the next few years.

  14. Effects of predation, flooding, and contamination on reproductive success of California Clapper Rails (Rallus longirostris obsoletus) in San Francisco Bay

    USGS Publications Warehouse

    Schwarzbach, S.E.; Albertson, J.D.; Thomas, C.M.

    2006-01-01

    We assessed the reproductive success of the California Clapper Rail (Rallus longirostris obsoletus), an endangered subspecies restricted to San Francisco Bay, and the relative importance of predation, flooding, and contaminants as factors affecting that success. Our study was conducted in six tidal marshes in the northern and southern reaches of San Francisco Bay. This assessment, conducted in four breeding seasons (1991, 1992, 1998, 1999), determined that productivity of California Clapper Rails was much reduced over the natural potential. Only 69% of clapper rail eggs whose viability could be assessed were viable. Hatchability of eggs in North Bay and South Bay marshes was 65% and 70%, respectively. Only 45% of the nests successfully hatched at least one egg. Despite mean clutch sizes of 6.7 and 6.9 in the North and South bays, respectively, clapper rails produced only 1.9 and 2.5 young per nesting attempt. Flooding was a minor factor, reducing the number of eggs available to hatch by only 2.3%. Predation on eggs was a major factor affecting nest success, reducing productivity by a third. Failed eggs were examined for abnormal development and contaminant concentrations. Contamination appeared to adversely influence California Clapper Rail reproductive success, as evidenced by deformities; embryo hemorrhaging; embryo malpositions; a depressed rate of hatchability; excess concentrations of mercury, barium, and chromium over known avian embryotoxic thresholds; and a correlation of deformities with elevated concentrations of some trace elements in eggs that failed to hatch. Mercury was the only significant contaminant common to all marshes.

  15. Diel variation in detection and vocalization rates of king (Rallus elegans) and clapper (Rallus crepitans) rails in intracoastal waterways

    USGS Publications Warehouse

    Stiffler, Lydia L.; Anderson, James T.; Welsh, Amy B.; Harding, Sergio R.; Costanzo, Gary R.; Katzner, Todd

    2017-01-01

    Surveys for secretive marsh birds could be improved with refinements to address regional and species-specific variation in detection probabilities and optimal times of day to survey. Diel variation in relation to naïve occupancy, detection rates, and vocalization rates of King (Rallus elegans) and Clapper (R. crepitans) rails were studied in intracoastal waterways in Virginia, USA. Autonomous acoustic devices recorded vocalizations of King and Clapper rails at 75 locations for 48-hr periods within a marsh complex. Naïve King and Clapper rail occupancy did not vary hourly at either the marsh or the study area level. Combined King and Clapper rail detections and vocalizations varied across marshes, decreased as the sampling season progressed, and, for detections, was greatest during low rising tides (P < 0.01). Hourly variation in vocalization and detection rates did not show a pattern but occurred between 7.8% of pairwise comparisons for detections and 10.5% of pairwise comparisons for vocalizations (P < 0.01). Higher rates of detections and vocalizations occurred during the hours of 00:00–00:59, 05:00–05:59, 14:00–15:59, and lower rates during the hours of 07:00–09:59. Although statistically significant, because there were no patterns in these hourly differences, they may not be biologically relevant and are of little use to management. In fact, these findings demonstrate that surveys for King and Clapper rails in Virginia intracoastal waterways may be effectively conducted throughout the day.

  16. Natal plumage characters in rails

    USGS Publications Warehouse

    Wetherbee, D.K.; Meanley, B.

    1965-01-01

    The downy young of the Clapper Rail (Rallus longirostris), King Rail (Rallus elegans), and Virginia Rail (Rallus limicola) are described as totally black in all literature examined by us. Wetherbee (Bird-Banding, 32: 141-159, 1961) noted that some neonates of Virginia Rail from Storrs, Connecticut, had patches of white down below the wings. "Neonatal" pertains to the developmental condition or characters at hatching distinct from the much abused term "natal" which in ornithology pertains to the condition or characters from hatching to acquisition of teleoptile plumage. The presence of similar patches of white down was observed by us in the Clapper Rails at Chincoteague, Virginia (Figure 1). An examination of many hundreds of specimens from the ranges of most of the subspecies of Clapper Rails, including the strongly contrasting R. longirostris saturatus from Louisiana, revealed the almost invariable presence of at least 1 and sometimes as many as 30 white neossoptiles in the anterior abdominal regions of the ventral pterylae. Conversely, no King Rail neonate examined by us has shown a white neossoptile.

  17. Clutch size of the clapper rail

    USGS Publications Warehouse

    Stewart, R.E.; Meanley, B.

    1960-01-01

    Incidental information concerning the clutch size of the Clapper Rail (Rallus longirostris) was obtained during other studies of this species in the extensive salt marshes near Chincoteague, Virginia. Clutches were considered complete when repeated visits to the nest showed no additional eggs or when embryonic development could be clearly detected.

  18. The toxicity of p,p'-DDT to the clapper rail

    USGS Publications Warehouse

    Van Velzen, A.; Kreitzer, J.F.

    1975-01-01

    The LC50 (concentration of toxicant in the diet expected to kill half of the test birds in 5 days) for p,p' -DDT in clapper rails (Rallus longirostris) was found to be 1,612 ppm for males and 1,896 ppm for females. Amounts of DDT + DDD in the brains of birds that died were significantly greater (P < 0.01) than those in the brains of survivors. Thirty ppm DDT + DDD approximated the lower limit of these compounds in the brains of rails diagnostic of death from DDT poisoning. Residues in livers and carcasses are reported. Considering the relatively high resistance of the clapper rail to DDT poisoning, we concluded that exposure to this pesticide in marshes is not likely to be a significant factor in mortality of adult rails. Effects other than direct mortality were not evaluated in this study.

  19. Human Health Baseline Risk Assessment for the Estuary, Operable Unit 1, Marsh Trespasser, Fish and Shellfish Consumer, Clapper Rail Consumer, LCP Chemicals Superfund Site

    EPA Pesticide Factsheets

    report on marsh trespasser and consumption of fish, shellfish, and clapper rail at LCP Superfund site in Brunswick, Georgia, prepared by EPS, Inc. in Aug. 2011. Region ID: 04 DocID: 10841008, DocDate: 08-01-2011

  20. Does mercury contamination reduce body condition of endangered California clapper rails?

    USGS Publications Warehouse

    Ackerman, Joshua T.; Overton, Cory T.; Casazza, Michael L.; Takekawa, John Y.; Eagles-Smith, Collin A.; Keister, Robin A.; Herzog, Mark P.

    2012-01-01

    We examined mercury exposure in 133 endangered California clapper rails (Rallus longirostris obsoletus) within tidal marsh habitats of San Francisco Bay, California from 2006 to 2010. Mean total mercury concentrations were 0.56 μg/g ww in blood (range: 0.15–1.43), 9.87 μg/g fw in head feathers (3.37–22.0), 9.04 μg/g fw in breast feathers (3.68–20.2), and 0.57 μg/g fww in abandoned eggs (0.15–2.70). We recaptured 21 clapper rails and most had low within-individual variation in mercury. Differences in mercury concentrations were largely attributed to tidal marsh site, with some evidence for year and quadratic date effects. Mercury concentrations in feathers were correlated with blood, and slopes differed between sexes (R2 = 0.58–0.76). Body condition was negatively related to mercury concentrations. Model averaged estimates indicated a potential decrease in body mass of 20–22 g (5–7%) over the observed range of mercury concentrations. Our results indicate the potential for detrimental effects of mercury contamination on endangered California clapper rails in tidal marsh habitats.

  1. Tidal and seasonal effects on survival rates of the endangered California clapper rail: Does invasive Spartina facilitate greater survival in a dynamic environment?

    USGS Publications Warehouse

    Overton, Cory T.; Casazza, Michael L.; Takekawa, John Y.; Strong, Donald R.; Holyoak, Marcel

    2014-01-01

    Invasive species frequently degrade habitats, disturb ecosystem processes, and can increase the likelihood of extinction of imperiled populations. However, novel or enhanced functions provided by invading species may reduce the impact of processes that limit populations. It is important to recognize how invasive species benefit endangered species to determine overall effects on sensitive ecosystems. For example, since the 1990s, hybrid Spartina (Spartina foliosa × alterniflora) has expanded throughout South San Francisco Bay, USA, supplanting native vegetation and invading mudflats. The endangered California clapper rail (Rallus longirostris obsoletus) uses the tall, dense hybrid Spartina for cover and nesting, but the effects of hybrid Spartina on clapper rail survival was unknown. We estimated survival rates of 108 radio-marked California clapper rails in South San Francisco Bay from January 2007 to March 2010, a period of extensive hybrid Spartina eradication, with Kaplan–Meier product limit estimators. Clapper rail survival patterns were consistent with hybrid Spartina providing increased refuge cover from predators during tidal extremes which flood native vegetation, particularly during the winter when the vegetation senesces. Model averaged annual survival rates within hybrid Spartina dominated marshes before eradication (Ŝ = 0.466) were greater than the same marshes posttreatment (Ŝ = 0.275) and a marsh dominated by native vegetation (Ŝ = 0.272). However, models with and without marsh treatment as explanatory factor for survival rates had nearly equivalent support in the observed data, lending ambiguity as to whether hybrid Spartina facilitated greater survival rates than native marshland. Conservation actions to aid in recovery of this endangered species should recognize the importance of available of high tide refugia, particularly in light of invasive species eradication programs and projections of future sea-level rise.

  2. Organochlorine residues and shell thickness in eggs of the clapper rail, common gallinule, purple gallinule, and limpkin (Class Aves), eastern and southern United States, 1972-74

    USGS Publications Warehouse

    Klaas, E.E.; Ohlendorf, H.M.; Cromartie, E.

    1980-01-01

    Organochlorine residues and shell thicknesses were surveyed in eggs of the clapper rail (Rallus longirostris), purple gallinule (Porphyrula martinica), common gallinule (Gallinula chloropas), and limpkin (Aramus guarauna) from the eastern and southern United States. Clapper rail eggs were collected during 1972-73 in New Jersey, Virginia, and South Carolina. During 1973-74, gallinule eggs were collected in Florida, South Carolina, and Louisiana, and limpkin eggs were collected in Florida. Egg contents were analyzed for residues of organochlorine pesticides, including DDT, TDE, DDE, dieldrin, mirex, heptachlor epoxide, oxychlordane, cis-chlordane (and/or trans-nonachlor), cis-nonachlor, hexachlorobenzene (HCB), toxaphene, and endrin, and for polychlorinated biphenyls (PCBs). Shell thicknesses of recent eggs of these species were compared with archival eggs that had been collected before 1947. With the exception of the limpkin, the majority of eggs analyzed contained residues of p,p'-DDE and PCBs. Geometric means ranged from 0.10 ppm to 1.3 ppm. Small amounts (less than 1.0 ppm) of mirex, dieldrin, cis-chlordane (and/or trans-nonachlor), TDE, and DDT were detected in a few eggs. No evidence of eggshell thinning was found for any of the species studied. DDE residues in clapper rail eggs were higher in New Jersey and Virginia than in South Carolina.

  3. The light-footed clapper rail: An update

    USGS Publications Warehouse

    Wilburn, Cynthia A.; Jorgensen, Paul D.; Massey, Barbara W.; Basham, Venita A.

    1979-01-01

    A preliminary report on the Light-footed Clapper Rail, Rallus longirostris levipes, estimated a population of 500-750 birds in California (Wilbur, Am. Birds 28:868-870, 1974). Since then, additional work has been accomplished, most notably: (1) an intensive study of Carpinteria Marsh, Santa Barbara County, 1976-1977 (Basham); (2) a series of winter high tide counts at Anaheim Bay, Orange County, 1975-1977 (Massey, C. Collins, J. Lindell, M. Silbernagle); and (3) a detailed investigation of the rail population of Tijuana Slough, San Diego County, 1973-1974 (Jorgensen). These, plus short-term studies by the authors and K. Bender, D. Pinkler, P. Johns, and S. Lockhart, have shown that the original estimate was unrealistic. A more probable winter total is 300 rails, distributed as described below.

  4. Recovery strategies for the California clapper rail (Rallus longirostris obsoletus) in the heavily-urbanized San Francisco estuarine ecosystem

    USGS Publications Warehouse

    Foin, Theodore C.; Garcia, E. Jacqueline; Gill, Robert E.; Culberson, Steven D.; Collins, Joshua N.

    1997-01-01

    The California clapper rail (Rallus longirostris obsoletus), a Federal- and State-listed endangered marsh bird, has a geographic range restricted to one of the most heavily-urbanized estuaries in the world. The rail population has long been in a state of decline, although the exact contribution of each of the many contributing causes remains unclear. The rail is one of the key targets of emerging plans to conserve and restore tidal marshlands. Reduction of tidal marsh habitat, estimated at 85–95%, has been the major historical cause of rail decline. Increased predation intensity may be the more important present problem, because habitat fragmentation and alteration coupled with the invasion of the red fox have made the remaining populations more vulnerable to predators. Population viability analysis shows that adult survivorship is the key demographic variable; reversals in population fate occur over a narrow range of ecologically realistic values. Analysis of habitat requirements and population dynamics of the clapper rail in the San Francisco Estuary shows that decreased within-marsh habitat quality, particularly reduction of tidal flows and alteration of drainage, is an important barrier to population recovery. Management and restoration activities should emphasize the development of well-channelized high tidal marsh, because this is the key requirement of rail habitat. Developing effective restoration programs depends upon having information that field research will not provide. The effect of spatial pattern of reserves requires accurate estimation of the effects of prédation and inter-marsh movement, both of which are practically impossible to measure adequately. It will be necessary to develop and use simulation models that can be applied to geographic data to accomplish this task.

  5. Forest turnover rates follow global and regional patterns of productivity

    USGS Publications Warehouse

    Stephenson, N.L.; van Mantgem, P.J.

    2005-01-01

    Organochlorine residues and shell thicknesses were surveyed in eggs of the clapper rail (Rallus longirostris), purple gallinule (Porphyrula martinica), common gallinule (Gallinula chloropas), and limpkin (Aramus guarauna) from the eastern and southern United States. Clapper rail eggs were collected during 1972-73 in New Jersey, Virginia, and South Carolina. During 1973-74, gallinule eggs were collected in Florida, South Carolina, and Louisiana, and limpkin eggs were collected in Florida. Egg contents were analyzed for residues of organochlorine pesticides, including DDT, TDE, DDE, dieldrin, mirex, heptachlor epoxide, oxychlordane, cis-chlordane (and/or trans-nonachlor), cis-nonachlor, hexachlorobenzene (HCB), toxaphene, and endrin, and for polychlorinated biphenyls (PCBs). Shell thicknesses of recent eggs of these species were compared with archival eggs that had been collected before 1947. With the exception of the limpkin, the majority of eggs analyzed contained residues of p,p'-DDE and PCBs. Geometric means ranged from 0.10 ppm to 1.3 ppm. Small amounts (less than 1.0 ppm) of mirex, dieldrin, cis-chlordane (and/or trans-nonachlor), TDE, and DDT were detected in a few eggs. No evidence of eggshell thinning was found for any of the species studied. DDE residues in clapper rail eggs were higher in New Jersey and Virginia than in South Carolina.

  6. Gene flow connects coastal populations of a habitat specialist, the Clapper Rail Rallus crepitans

    USGS Publications Warehouse

    Coster, Stephanie S.; Welsh, Amy B.; Costanzo, Gary R.; Harding, Sergio R.; Anderson, James T.; Katzner, Todd

    2018-01-01

    Examining population genetic structure can reveal patterns of reproductive isolation or population mixing and inform conservation management. Some avian species are predicted to exhibit minimal genetic differentiation among populations as a result of the species high mobility, with habitat specialists tending to show greater fine‐scale genetic structure. To explore the relationship between habitat specialization and gene flow, we investigated the genetic structure of a saltmarsh specialist with high potential mobility across a wide geographic range of fragmented habitat. Little variation among mitochondrial sequences (620 bp from ND2) was observed among 149 individual Clapper Rails Rallus crepitans sampled along the Atlantic coast of North America, with the majority of individuals at all sampling sites sharing a single haplotype. Genotyping of nine microsatellite loci across 136 individuals revealed moderate genetic diversity, no evidence of bottlenecks, and a weak pattern of genetic differentiation that increased with geographic distance. Multivariate analyses, Bayesian clustering and an AMOVA all suggested a lack of genetic structuring across the North American Atlantic coast, with all individuals grouped into a single interbreeding population. Spatial autocorrelation analyses showed evidence of weak female philopatry and a lack of male philopatry. We conclude that high gene flow connecting populations of this habitat specialist may result from the interaction of ecological and behavioral factors that promote dispersal and limit natal philopatry and breeding‐site fidelity. As climate change threatens saltmarshes, the genetic diversity and population connectivity of Clapper Rails may promote resilience of their populations. This finding helps inform about potential fates of other similarly behaving saltmarsh specialists on the Atlantic coast.

  7. Taxonomic status of certain clapper rails of southwestern United States and northwestern Mexico

    USGS Publications Warehouse

    Banks, R.C.; Tomlinson, R.E.

    1974-01-01

    Examination of 58 Clapper Rail specimens taken in the breeding season from the Colorado Valley and the west coast of mainland Mexico verifies the distinctness of the races Rallus longirostris yomanensis, R. 1. rhizophorae, and R. 1. nayaritensis. Rallus 1. yumanensis is a relatively pale brown, pointed-winged, summer resident of freshwater marshes along the valley and delta of the Colorado River. Late winter specimens of yumanensis have been taken in freshwater and saltwater habitats in the Mexican states of Sinaloa and Puebla. Both R. 1. rhizophorae, a pale grayish bird, and R. 1. nayaritensis, a darker grayish form, are presumed year-round residents of the western Mexican mangrove swamps. Both have more rounded wings than yumanensis. The range of rhizophorae extends south along the coast from central Sonora to central Sinaloa, and that of nayaritensis from central Sinaloa to the vicinity of San Blas, Nayarit. Features of the range and characters of birds where the range of these two races approach each other are unclear.

  8. Habitat Value of Man-Made Coastal Marshes in Florida

    DTIC Science & Technology

    1991-09-01

    extraneous material as possible, and preserved in plastic bags. All cores were taken directly over a culm of Spartina that had been clipped at ground...spoonbill Ajaia ajaja x Wood stork Mycteri.a .ne:-. ana X Mottled duck Anas tulvigula x Black rail Lateral/us jamaici-,A,. X Clapper rail Rat/us...erythrophthalmus X X LeConte’s or sharp-tailed sparrow Ammodramus spp. X X Seaside sparrow Ammodramus maritimus X X Red- winged blackbird Agelaius

  9. Concentrations and time trends of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) in aquatic bird eggs from San Francisco Bay, CA 2000-2003.

    PubMed

    She, Jianwen; Holden, Arthur; Adelsbach, Terrence L; Tanner, Manon; Schwarzbach, Steven E; Yee, Julie L; Hooper, Kim

    2008-08-01

    Concentrations of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) were measured in 169 avian eggs. We analyzed randomly collected eggs of two species of piscivorous birds: Caspian tern (Sterna caspia) (n=78) and Forster's tern (Sterna forsteri) (n=76). We also analyzed fail-to-hatch eggs from two species protected under the Federal Endangered Species Act of 1973, that breed in the San Francisco Bay region: the piscivorous California Least tern (Sterna antillarum brownii) (n=11) and the omnivorous California Clapper rail (Rallus longirostris obsoletus) (n=4). San Francisco Bay eggs were collected annually for four years (2000-2003), and additional 20 eggs were collected and analyzed from Gray's Harbor, Washington in 2001. Geometric mean PBDE concentrations did not significantly differ in the three tern species, but concentrations in eggs from the fail to hatch California Clapper rail eggs were significantly lower than those found in the randomly collected tern eggs. Median concentrations of SigmaPBDEs in Caspian tern eggs for 2000-2003 were 2410, 4730, 3720 and 2880 ng/g lipid weight (lw), respectively, in Forster's terns 1820, 4380, 5460 and 3600 ng/g lw, respectively, and in California Least terns for 2001 and 2002 were 5060 and 5170 ng/g lw, respectively. In contrast, median SigmaPBDEs concentration in California Clapper rail eggs for 2001 was 379 ng/g lw. Five PBDEs were the major congeners found and decreased in the order BDE-47, -99, -100, -153, and -154. BDE-32, -28, -71, -66, -85, -183 were less prevalent, minor congeners, as was BDE-209, which was measured in a subset of samples. PBDE concentrations in bird eggs from San Francisco Bay were site related. There was no significant difference in PBDE concentrations in Caspian tern eggs from San Francisco Bay and Gray's Harbor, WA. Average PBDE concentrations in eggs did not significantly increase over the period 2000-2003.

  10. Concentrations and time trends of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) in aquatic bird eggs from San Francisco Bay, CA 2000-2003

    USGS Publications Warehouse

    She, J.; Holden, A.; Adelsbach, T.L.; Tanner, M.; Schwarzbach, S.E.; Yee, J.L.; Hooper, K.

    2008-01-01

    Concentrations of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) were measured in 169 avian eggs. We analyzed randomly collected eggs of two species of piscivorous birds: Caspian tern (Sterna caspia) (n = 78) and Forster's tern (Sterna forsteri) (n = 76). We also analyzed fail-to-hatch eggs from two species protected under the Federal Endangered Species Act of 1973, that breed in the San Francisco Bay region: the piscivorous California Least tern (Sterna antillarum brownii) (n = 11) and the omnivorous California Clapper rail (Rallus longirostris obsoletus) (n = 4). San Francisco Bay eggs were collected annually for four years (2000-2003), and additional 20 eggs were collected and analyzed from Gray's Harbor, Washington in 2001. Geometric mean PBDE concentrations did not significantly differ in the three tern species, but concentrations in eggs from the fail to hatch California Clapper rail eggs were significantly lower than those found in the randomly collected tern eggs. Median concentrations of ???PBDEs in Caspian tern eggs for 2000-2003 were 2410, 4730, 3720 and 2880 ng/g lipid weight (lw), respectively, in Forster's terns 1820, 4380, 5460 and 3600 ng/g lw, respectively, and in California Least terns for 2001 and 2002 were 5060 and 5170 ng/g lw, respectively. In contrast, median ???PBDEs concentration in California Clapper rail eggs for 2001 was 379 ng/g lw. Five PBDEs were the major congeners found and decreased in the order BDE-47, -99, -100, -153, and -154. BDE-32, -28, -71, -66, -85, -183 were less prevalent, minor congeners, as was BDE-209, which was measured in a subset of samples. PBDE concentrations in bird eggs from San Francisco Bay were site related. There was no significant difference in PBDE concentrations in Caspian tern eggs from San Francisco Bay and Gray's Harbor, WA. Average PBDE concentrations in eggs did not significantly increase over the period 2000-2003. ?? 2008 Elsevier Ltd. All rights reserved.

  11. Building a Habitat Conversion Model for San Francisco Bay Wetlands: A Multi-species Approach for Integrating GIS and Field Data

    Treesearch

    Diana Stralberg; Nils Warnock; Nadav Nur; Hildie Spautz; Gary W. Page

    2005-01-01

    More than 80 percent of San Francisco Bay's original tidal wetlands have been altered or displaced, reducing available habitat for a range of tidal marsh-dependent species, including the Federally listed California Clapper Rail (Rallus longirostris obsoletus) and three endemic Song Sparrow (Melospiza melodia) subspecies. In...

  12. Detailed study of water quality, bottom sediment, and biota associated with irrigation drainage in the Salton Sea area, California, 1988-90

    USGS Publications Warehouse

    Setmire, J.G.; Schroeder, R.A.; Densmore, J.N.; Goodbred, S.O.; Audet, D.J.; Radke, W.R.

    1993-01-01

    Results of a detailed study by the National Irrigation Water-Quality Program (NIWQP), U.S. Department of the Interior, indicate that factors controlling contaminant concentrations in subsurface irrigation drainwater in the Imperial Valley are soil characteristics, hydrology, and agricultural practices. Higher contaminant concentrations commonly were associated with clayey soils, which retard the movement of irrigation water and thus increase the degree of evaporative concentration. Regression of hydrogen- and oxygen-isotope ratios in samples collected from sumps yields a linear drainwater evaporation line that extrapolates through the isotopic composition of Colorado River water, thus demonstrating that Colorado River water is the sole source of subsurface drainwater in the Imperial Valley. Ratios of selenium to chloride indicate that selenium present in subsurface drainwater throughout the Imperial Valley originates from the Colorado River. The selenium load discharged to the Salton Sea from the Alamo River, the largest contributor, is about 6.5 tons/yr. Biological sampling and analysis showed that drainwater contaminants, including selenium, boron, and DDE, are accumulating in tissues of migratory and resident birds that use food sources in the Imperial Valley and the Salton Sea. Selenium concentration in fish-eating birds, shorebirds, and the endangered Yuma clapper rail were at levels that could affect reproduction. Boron concentrations in migratory waterfowl and resident shorebirds were at levels that potentially could cause reduced growth in young. As a result of DDE contamination of food sources, waterfowl and fish-eating birds in the Imperial Valley may be experiencing reproductive impairment.

  13. Maximizing detection probability of Wetland-dependent birds during point-count surveys in northwestern Florida

    USGS Publications Warehouse

    Nadeau, C.P.; Conway, C.J.; Smith, B.S.; Lewis, T.E.

    2008-01-01

    We conducted 262 call-broadcast point-count surveys (1-6 replicate surveys on each of 62 points) using standardized North American Marsh Bird Monitoring Protocols between 31 May and 7 July 2006 on St. Vincent National Wildlife Refuge, an island off the northwest coast of Florida. We conducted double-blind multiple-observer surveys, paired morning and evening surveys, and paired morning and night surveys to examine the influence of call-broadcast and time of day on detection probability. Observer detection probability for all species pooled was 75% and was similar between passive (69%) and call-broadcast (65%) periods. Detection probability was higher on morning than evening (t = 3.0, P = 0.030) or night (t = 3.4, P = 0.042) surveys when we pooled all species. Detection probability was higher (but not significant for all species) on morning compared to evening or night surveys for all five focal species detected on surveys: Least Bittern (Ixobrychus exilis), Clapper Rail (Rallus longirostris), Purple Gallinule (Porphyrula martinica), Common Moorhen (Gallinula chloropus), and American Coot (Fulica americana). We detected more Least Bitterns (t = 2.4, P = 0.064) and Common Moorhens (t = 2.8, P = 0.026) on morning than evening surveys, and more Clapper Rails (t = 5.1, P = 0.014) on morning than night surveys.

  14. Modeling the Cienega de Santa Clara, Sonora, Mexico

    NASA Astrophysics Data System (ADS)

    Huckelbridge, K. H.; Hidalgo, H.; Dracup, J.; Ibarra Obando, S. E.

    2002-12-01

    The Cienega de Santa Clara is a created wetland located in the Colorado River Delta (CRD), in Sonora, Mexico. It is sustained by agricultural return flows from the Wellton-Mohawk Irrigation District in Arizona and the Mexicali Valley in Mexico. As one of the few wetlands remaining in the CRD, it provides critical habitat for several species of fish and birds, including several endangered species such as the desert pupfish (Cyprinodon macularius) and the Yuma clapper rail (Rallus longirostris yumanensis). However, this habitat may be in jeopardy if the quantity and quality of the agricultural inflows are significantly altered. This study seeks to develop a model that describes the dynamics of wetland hydrology, vegetation, and water quality as a function of inflow variability and salinity loading. The model is divided into four modules set up in sequence. For a given time step, the sequence begins with the first module, which utilizes basic diffusion equations to simulate mixing processes in the shallow wetland when the flow and concentration of the inflow deviate from the baseline. The second module develops a vegetated-area response to the resulting distribution of salinity in the wetland. Using the new area of vegetation cover determined by the second module and various meteorological variables, the third module calculates the evapotranspiration rate for the wetland, using the Penman-Montieth equation. Finally, the fourth module takes the overall evapotranspiration rate, along with precipitation, inflow and outflow and calculates the new volume of the wetland using a water balance. This volume then establishes the initial variables for the next time step. The key outputs from the model are salinity concentration, area of vegetation cover, and wetland volume for each time step. Results from this model will illustrate how the wetland's hydrology, vegetation, and water quality are altered over time under various inflow scenarios. These outputs can ultimately be used to assess the impacts to wetland wildlife and overall ecosystem health, and to determine the best management strategy for the Cienega de Santa Clara.

  15. Environmental extremes and biotic interactions facilitate depredation of endangered California Ridgway’s rail in a San Francisco Bay tidal marsh

    USGS Publications Warehouse

    Overton, Cory T.; Bobzien, Steven; Grefsrud, Marcia

    2016-01-01

    On 23 December 2015 while performing a high tide population survey for endangered Ridgway’s rails (Rallus obsoletus obsoletus; formerly known as the California clapper rail) and other rail species at Arrowhead Marsh, Martin Luther King Jr. Regional Shoreline, Oakland, California, the authors observed a series of species interactions resulting in the predation of a Ridgway’s rail by an adult female peregrine falcon (Falco peregrinus). High tide surveys are performed during the highest tides of the year when tidal marsh vegetation at Arrowhead Marsh becomes inundated, concentrating the tidal marsh obligate species into the limited area of emergent vegetation remaining as refuge cover. Annual mean tide level (elevation referenced relative to mean lower low water) at Arrowhead Marsh is 1.10 m, mean higher high water is 2.04 m (NOAA National Ocean Service 2014) and the average elevation of the marsh surface is 1.60 m (Overton et al. 2014). Tidal conditions on the day of the survey were predicted to be 2.42 m. Observed tides at the nearby Alameda Island tide gauge were 8 cm higher than predicted due to a regional low-pressure system and warmer than average sea surface temperatures (NOAA National Ocean Service 2014). The approximately 80 cm deep inundation of the marsh plain was sufficient to completely submerge tidal marsh vegetation and effectively remove 90% of refugia habitats.

  16. Evaluating autonomous acoustic surveying techniques for rails in tidal marshes

    USGS Publications Warehouse

    Stiffler, Lydia L.; Anderson, James T.; Katzner, Todd

    2018-01-01

    There is a growing interest toward the use of autonomous recording units (ARUs) for acoustic surveying of secretive marsh bird populations. However, there is little information on how ARUs compare to human surveyors or how best to use ARU data that can be collected continuously throughout the day. We used ARUs to conduct 2 acoustic surveys for king (Rallus elegans) and clapper rails (R. crepitans) within a tidal marsh complex along the Pamunkey River, Virginia, USA, during May–July 2015. To determine the effectiveness of an ARU in replacing human personnel, we compared results of callback point‐count surveys with concurrent acoustic recordings and calculated estimates of detection probability for both rail species combined. The success of ARUs at detecting rails that human observers recorded decreased with distance (P ≤ 0.001), such that at <25 m, 90.3% of human‐recorded rails also were detected by the ARU, but at >75 m, only 34.0% of human‐detected rails were detected by the ARU. To determine a subsampling scheme for continuous ARU data that allows for effective surveying of presence and call rates of rails, we used ARUs to conduct 15 continuous 48‐hr passive surveys, generating 720 hr of recordings. We established 5 subsampling periods of 5, 10, 15, 30, and 45 min to evaluate ARU‐based presence and vocalization detections of rails compared with each of the full 60‐min sampling of ARU‐based detection of rails. All subsampling periods resulted in different (P ≤ 0.001) detection rates and unstandardized vocalization rates compared with the hourly sampling period. However, standardized vocalization counts from the 30‐min subsampling period were not different from vocalization counts of the full hourly sampling period. When surveying rail species in estuarine environments, species‐, habitat‐, and ARU‐specific limitations to ARU sampling should be considered when making inferences about abundances and distributions from ARU data. 

  17. Occupancy modeling of autonomously recorded vocalizations to predict distribution of rallids in tidal wetlands

    USGS Publications Warehouse

    Stiffler, Lydia L.; Anderson, James T.; Katzner, Todd

    2018-01-01

    Conservation and management for a species requires reliable information on its status, distribution, and habitat use. We identified occupancy and distributions of king (Rallus elegans) and clapper (R. crepitans) rail populations in marsh complexes along the Pamunkey and Mattaponi Rivers in Virginia, USA by modeling data on vocalizations recorded from autonomous recording units (ARUs). Occupancy probability for both species combined was 0.64 (95% CI: 0.53, 0.75) in marshes along the Pamunkey and 0.59 (0.45, 0.72) in marshes along the Mattaponi. Occupancy probability along the Pamunkey was strongly influenced by salinity, increasing logistically by a factor of 1.62 (0.6, 2.65) per parts per thousand of salinity. In contrast, there was not a strong salinity gradient on the Mattaponi and therefore vegetative community structure determined occupancy probability on that river. Estimated detection probability across both marshes was 0.63 (0.62, 0.65), but detection rates decreased as the season progressed. Monitoring wildlife within wetlands presents unique challenges for conservation managers. Our findings provide insight not only into how rails responded to environmental variation but also into the general utility of ARUs for occupancy modeling of the distribution and habitat associations of rails within tidal marsh systems.

  18. Summary of intrinsic and extrinsic factors affecting detection probability of marsh birds

    USGS Publications Warehouse

    Conway, C.J.; Gibbs, J.P.

    2011-01-01

    Many species of marsh birds (rails, bitterns, grebes, etc.) rely exclusively on emergent marsh vegetation for all phases of their life cycle, and many organizations have become concerned about the status and persistence of this group of birds. Yet, marsh birds are notoriously difficult to monitor due to their secretive habits. We synthesized the published and unpublished literature and summarized the factors that influence detection probability of secretive marsh birds in North America. Marsh birds are more likely to respond to conspecific than heterospecific calls, and seasonal peak in vocalization probability varies among co-existing species. The effectiveness of morning versus evening surveys varies among species and locations. Vocalization probability appears to be positively correlated with density in breeding Virginia Rails (Rallus limicola), Soras (Porzana carolina), and Clapper Rails (Rallus longirostris). Movement of birds toward the broadcast source creates biases when using count data from callbroadcast surveys to estimate population density. Ambient temperature, wind speed, cloud cover, and moon phase affected detection probability in some, but not all, studies. Better estimates of detection probability are needed. We provide recommendations that would help improve future marsh bird survey efforts and a list of 14 priority information and research needs that represent gaps in our current knowledge where future resources are best directed. ?? Society of Wetland Scientists 2011.

  19. Investigation of ecosystems impacts from geothermal development in Imperial Valley, California

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Shinn, J.H.; Ireland, R.R.; Kercher, J.R.

    1979-07-13

    A summary of three years of field ecological investigation in Imperial Valley Environmental Program is presented. The potential terrestrial habitat impacts of geothermal development are discussed for shorebirds and waterfowl habitat, the endangered clapper rail, powerline corridors, noise effects, animal trace element burdens, and the desert community. Aquatic habitats are discussed in terms of Salton Sea salinity, effects of geothermal brine discharges to the Salton Sea, trace element baselines, and potential toxicity of brine spills in freshwater. Studies of impacts on agriculture involved brine movement in soil, release of trace metals, trace element baselines in soil and plants, water requirementsmore » of crops, and H{sub 2}S effects on crop production in the presence of CO{sub 2} and ozone.« less

  20. Habitat models to predict wetland bird occupancy influenced by scale, anthropogenic disturbance, and imperfect detection

    USGS Publications Warehouse

    Glisson, Wesley J.; Conway, Courtney J.; Nadeau, Christopher P.; Borgmann, Kathi L.

    2017-01-01

    Understanding species–habitat relationships for endangered species is critical for their conservation. However, many studies have limited value for conservation because they fail to account for habitat associations at multiple spatial scales, anthropogenic variables, and imperfect detection. We addressed these three limitations by developing models for an endangered wetland bird, Yuma Ridgway's rail (Rallus obsoletus yumanensis), that examined how the spatial scale of environmental variables, inclusion of anthropogenic disturbance variables, and accounting for imperfect detection in validation data influenced model performance. These models identified associations between environmental variables and occupancy. We used bird survey and spatial environmental data at 2473 locations throughout the species' U.S. range to create and validate occupancy models and produce predictive maps of occupancy. We compared habitat-based models at three spatial scales (100, 224, and 500 m radii buffers) with and without anthropogenic disturbance variables using validation data adjusted for imperfect detection and an unadjusted validation dataset that ignored imperfect detection. The inclusion of anthropogenic disturbance variables improved the performance of habitat models at all three spatial scales, and the 224-m-scale model performed best. All models exhibited greater predictive ability when imperfect detection was incorporated into validation data. Yuma Ridgway's rail occupancy was negatively associated with ephemeral and slow-moving riverine features and high-intensity anthropogenic development, and positively associated with emergent vegetation, agriculture, and low-intensity development. Our modeling approach accounts for common limitations in modeling species–habitat relationships and creating predictive maps of occupancy probability and, therefore, provides a useful framework for other species.

  1. Experimental research on friction coefficient between grain bulk and bamboo clappers

    NASA Astrophysics Data System (ADS)

    Tang, Gan; Sun, Ping; Zhao, Yanqi; Yin, Lingfeng; Zhuang, Hong

    2017-12-01

    A silo is an important piece of storage equipment, especially in the grain industry. The internal friction angle and the friction coefficient between the grain and the silo wall are the main parameters needed for calculating the lateral pressure of the silo wall. Bamboo is used in silo walls, but there are no provisions about the friction coefficient between bulk grain and bamboo clappers in existing codes. In this paper, the material of the silo wall is bamboo. The internal friction of five types of grain and the friction coefficient between the grain and the bamboo clappers were measured with an equal-strain direct shear apparatus. By comparing the experimental result values with the code values, the friction coefficient between the grain bulk and bamboo clappers is lower than that between grain and steel wall and that between grain and concrete wall. The differences in value are 0.21 and 0.09, respectively.

  2. 78 FR 72006 - Establishment of Class D Airspace and Class E Airspace; Laguna AAF, AZ

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-02

    ... establishes Class D airspace and Class E airspace at Laguna Army Air Field (AAF), (Yuma Proving Ground), Yuma...) within a 3.5- mile radius of Laguna AAF (Yuma Proving Ground), Yuma, AZ; and Class E airspace extending... scope of that authority as it establishes controlled airspace at Laguna AAF, (Yuma Proving Ground), Yuma...

  3. GATEWAY Demonstrations: Trial Demonstration of Area Lighting Retrofit, Yuma Border Patrol, Yuma, Arizona

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Wilkerson, A. M.; McCullough, J. J.

    Along the Yuma Sector Border Patrol Area in Yuma, Arizona, the GATEWAY program conducted a trial demonstration in which the incumbent quartz metal halide area lighting was replaced with LED at three pole locations at the Yuma Sector Border Patrol Area in Yuma, Arizona. The retrofit was documented to better understand LED technology performance in high-temperature environments.

  4. GATEWAY Demonstrations: LED System Performance in a Trial Installation--Two Years Later, Yuma Border Patrol, Yuma, Arizona

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Wilkerson, Andrea M.; Sullivan, Gregory P.; Davis, Robert G.

    Along the Yuma Sector Border Patrol Area in Yuma, Arizona, the GATEWAY program conducted a trial demonstration in which the incumbent quartz metal halide area lighting was replaced with LED at three pole locations at the Yuma Sector Border Patrol Area in Yuma, Arizona. The retrofit was documented to better understand LED technology performance in high-temperature environments. This report follows the GATEWAY Yuma Phase 1.1 Report and reflects LED system results documented two years after the demonstration began.

  5. GATEWAY Demonstrations: LED System Performance in a Trial Installation--One Year Later, Yuma Border Patrol, Yuma, Arizona

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Wilkerson, A. M.; Davis, R. G.

    Along the Yuma Sector Border Patrol Area in Yuma, Arizona, the GATEWAY program conducted a trial demonstration in which the incumbent quartz metal halide area lighting was replaced with LED at three pole locations at the Yuma Sector Border Patrol Area in Yuma, Arizona. The retrofit was documented to better understand LED technology performance in high-temperature environments. This report follows the GATEWAY Yuma Phase 1.0 Report and reflects LED system results documented one year after the demonstration began.

  6. Susceptibility of Tissue Cultures of Canine Origin to Viruses

    DTIC Science & Technology

    1965-08-01

    importance. It was realized that dogs may harbor other than the common- ly recognized rabies, distemper and infectious canine hepatitis viruses. Proper... CANINE ORIGIN TO VIRUSES S......... . i Albuquerque, New Mexico by FRANK F. PINDAK AND WILLIAM E. CLAPPER August 1965 DISTRIBUTON STATEMENTA Approved...TID-4500 (43rd Ed.) SUSCEPTIBILITY OF TISSUE CULTURES OF CANINE ORIGIN TO VIRUSES by Frank F. Pindak and William E. Clapper Submitted as a Technical

  7. TOP 01-1-011B Vehicle Test Facilities at Aberdeen Test Center and Yuma Test Center

    DTIC Science & Technology

    2017-12-12

    TYPE Final 3. DATES COVERED (From - To) 4. TITLE AND SUBTITLE Test Operations Procedure (TOP) 01-1-011B Vehicle Test Facilities at Aberdeen... Test Center and Yuma Test Center 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHORS 5d. PROJECT NUMBER 5e... Test Center 400 Colleran Road Aberdeen Proving Ground, MD 21005-5059 U.S. Army Yuma Proving Ground Yuma Test Center 301 C. Street Yuma, AZ

  8. Photocopy of photograph (original print in collection of Gerald A. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Photocopy of photograph (original print in collection of Gerald A. Doyle, Phoenix) Photographer: Emil Eger, Yuma, 1983 AERIAL VIEW OF THE YUMA CROSSING LOOKING WEST. FROM BOTTOM TO TOP OF THE IMAGE ARE: 1924 SPRR BRIDGE, OCEAN-TO-OCEAN HIGHWAY BRIDGE, INTERSTATE HIGHWAY BRIDGE (THE LAST IS NOT REFERENCED IN THIS DOCUMENT). THE RIVER IS SEEN IN FLOOD STAGE, APPROXIMATING THE HISTORIC CONDITION BEFORE THE CONSTRUCTION OF THE UP-STREAM DAMS. - Yuma Crossing, Riverfront Area, between Prison Hill & Fourth Avenue, Yuma, Yuma County, AZ

  9. 75 FR 4842 - Notice of Availability of Record of Decision for the Yuma Field Office Resource Management Plan...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-29

    ... Conservation Service; the Yuma County Department of Public Works; the city of Yuma; the U.S. Army Yuma Proving..., recreational, geological, educational, scientific, and scenic values that balance multiple uses of the BLM... cultural resources for which the area is designated; (2) Recreation facilities are limited to projects that...

  10. The study of international and interstate transport of ozone in Yuma, Arizona

    NASA Astrophysics Data System (ADS)

    Li, Y.; Sonenberg, M.; Wood, J. L.; Pearson, C. R.; Colson, H.; Malloy, J. W.; Pace, M.; Mao, F.; Paul, J.; Busby, B. R.; Parkey, B.; Drago, L.; Franquist, T. S.

    2017-12-01

    In October 2015, EPA reduced the National Ambient Air Quality Standards (NAAQS) for ozone from 75 parts per billion (ppb) to 70 ppb. Meeting the new standard may be extremely challenging for some areas, including rural Yuma County in the State of Arizona. Yuma County faces unique air quality challenges, since it borders the Mexican states of Baja California and Sonora, and the State of California. The present study investigates the contribution of international and interstate transport of ozone and ozone precursors to episodes of elevated ozone concentrations in Yuma. The Arizona Department of Environmental Quality (ADEQ) merged HYSPLIT modeling outputs with two years of hourly ground ozone monitor data to investigate the potential area contributions to ozone concentrations in Yuma County. This analysis found that elevated ozone concentrations in Yuma in 2014 and 2015 frequently coincided with back-trajectories over both California and Mexico, typically favoring Mexico during the spring. In May 2017, ADEQ installed a new ozone monitor in San Luis Rio Colorado, Sonora, Mexico (Latitude: 32.4665, Longitude: -114.7688), which is 29 km south of ozone site in Yuma County. We will present the first simultaneous observations of ozone seasons in Sonora, Mexico, eastern California, and Yuma.

  11. BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING SOUTHWEST. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING SOUTHWEST. - Yuma Main Street Water Treatment Plant, Blaisdell Slow Sand Filter Washing Machine, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  12. DOE Office of Scientific and Technical Information (OSTI.GOV)

    None

    Along the Yuma Sector Border Patrol Area in Yuma, Arizona, the GATEWAY program conducted a trial demonstration in which the incumbent quartz metal halide area lighting was replaced with LED at three pole locations at the Yuma Sector Border Patrol Area in Yuma, Arizona. The retrofit was documented to better understand LED technology performance in high-temperature environments. This document is a summary brief of the Phase 1.0 and 1.1 reports previously published on this demonstration.

  13. BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING WEST. THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING WEST. THE NONHISTORIC CHEMICAL BUILDING IS SEEN IN THE BACKGROUND. - Yuma Main Street Water Treatment Plant, Blaisdell Slow Sand Filter Washing Machine, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  14. Impact adding bifurcation in an autonomous hybrid dynamical model of church bell

    NASA Astrophysics Data System (ADS)

    Brzeski, P.; Chong, A. S. E.; Wiercigroch, M.; Perlikowski, P.

    2018-05-01

    In this paper we present the bifurcation analysis of the yoke-bell-clapper system which corresponds to the biggest bell "Serce Lodzi" mounted in the Cathedral Basilica of St Stanislaus Kostka, Lodz, Poland. The mathematical model of the system considered in this work has been derived and verified based on measurements of dynamics of the real bell. We perform numerical analysis both by direct numerical integration and path-following method using toolbox ABESPOL (Chong, 2016). By introducing the active yoke the position of the bell-clapper system with respect to the yoke axis of rotation can be easily changed and it can be used to probe the system dynamics. We found a wide variety of periodic and non-periodic solutions, and examined the ranges of coexistence of solutions and transitions between them via different types of bifurcations. Finally, a new type of bifurcation induced by a grazing event - an "impact adding bifurcation" has been proposed. When it occurs, the number of impacts between the bell and the clapper is increasing while the period of the system's motion stays the same.

  15. VIEW LOOKING SOUTHEAST TOWARD WEST SIDE OF SETTLING RESERVOIR NO. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW LOOKING SOUTHEAST TOWARD WEST SIDE OF SETTLING RESERVOIR NO. 1. THE BLAISDELL SLOW SAND FILTER WASHING MACHINE IS SEEN AT THE LEFT. MAIN STREET IS IN THE FOREGROUND. - Yuma Main Street Water Treatment Plant, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  16. SPRR WATER SETTLING RESERVOIR. VIEW LOOKING NORTHEAST. INTERSTATE HIGHWAY 8 ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    SPRR WATER SETTLING RESERVOIR. VIEW LOOKING NORTHEAST. INTERSTATE HIGHWAY 8 BRIDGE CROSSES THE COLORADO RIVER BEYOND THE RESERVOIR. THE OCEAN-TO-OCEAN HIGHWAY BRIDGE AND THE 1924 SPRR BRIDGE ARE AT THE RIGHT EDGE OF THE IMAGE ABOVE THE INTERSTATE BRIDGE. FORT YUMA IS SEEN BEYOND THE INTERSTATE ON INDIAN HILL IN CALIFORNIA. THE SINGLE AUTO IS PARKED ON THE SITE OF THE SPRR HOTEL. - Southern Pacific Railroad Water Settling Reservoir, Yuma Crossing, south bank of Colorado River at foot of Madison Avenue, Yuma, Yuma County, AZ

  17. BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING NORTHWEST. PIPING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING NORTHWEST. PIPING IN FOREGROUND IS NOT RELATED TO THE MACHINE. THE NORTHEAST CORNER OF SETTLING RESERVOIR NO. 3 IS SEEN AT THE LOWER LEFT. - Yuma Main Street Water Treatment Plant, Blaisdell Slow Sand Filter Washing Machine, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  18. VIEW LOOKING NORTH ALONG THE EAST SIDE OF SETTLING RESERVOIR ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW LOOKING NORTH ALONG THE EAST SIDE OF SETTLING RESERVOIR NO. 3. THE BLAISDELL SLOW SAND FILTER WASHING MACHINE IS SEEN AT THE NORTHEAST CORNER OF THE RESERVOIR. THE CONCRETE COLUMNS (LEFT) AND THE CEMENT-ASBESTOS TROUGH (RIGHT) WERE ADDED CIRCA 1944. - Yuma Main Street Water Treatment Plant, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  19. VIEW LOOKING EAST. THE NORTH WALL OF SETTLING RESERVOIR NO. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW LOOKING EAST. THE NORTH WALL OF SETTLING RESERVOIR NO. 3 IS AT THE LEFT. THE BLAISDELL SLOW SAND FILTER WASHING MACHINE IS SEEN AT THE UPPER LEFT AND SETTLING RESERVOIR NO. 4 IS SEEN BEYOND THE EAST WALL OF SETTLING RESERVOIR NO. 3. - Yuma Main Street Water Treatment Plant, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  20. 78 FR 57545 - Proposed Establishment of Class D Airspace and Class E Airspace; Laguna AAF, AZ

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-19

    ... Air Field (AAF), (Yuma Proving Ground), Yuma, AZ. The establishment of an air traffic control tower... Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590; telephone (202) 366-9826... Proving Ground), Yuma, AZ, excluding R-2306E and R- 2307 when in effect; and Class E airspace extending...

  1. Photocopy of photograph (original print in collection of Gerald A. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Photocopy of photograph (original print in collection of Gerald A. Doyle, Phoenix) Photographer unknown, June 7, 1943 AERIAL VIEW OF THE YUMA CROSSING LOOKING WEST. THE 1924 SPRR BRIDGE AND THE OCEAN-TO-OCEAN HIGHWAY BRIDGE ARE AT THE BOTTOM OF THE IMAGE. THE SITE OF SPRR BRIDGES AT MADISON AVENUE IS MARKED BY THE REMNANTS OF TWO MID-STREAM BRIDGE PIERS. THE CIRCULAR FOUNDATION OF THE SWINGING SPAN OF THE STEEL BRIDGE IS ON THE SHORELINE AT THE LEFT OF THE SOUTH (LEFT) PIER. THE RIVER IS IN FLOOD STAGE. - Yuma Crossing, Riverfront Area, between Prison Hill & Fourth Avenue, Yuma, Yuma County, AZ

  2. Assessment of geochemical and hydrologic conditions near Old Yuma Mine in Saguaro National Park, Arizona, 2014–17

    USGS Publications Warehouse

    Beisner, Kimberly R.; Gray, Floyd

    2018-03-13

    The Old Yuma Mine is an abandoned copper, lead, zinc, silver, and gold mine located within the boundaries of Saguaro National Park, Tucson Mountain District, Arizona. This study analyzed the geochemistry of sediments associated with the Old Yuma Mine and assessed hydrologic and geochemical conditions of groundwater to evaluate the area surrounding the Old Yuma Mine. The purpose of the study was to establish the geochemical signature of material associated with the Old Yuma Mine and to compare it with background material and groundwater in the area. Few groundwater samples exceeded the U.S. Environmental Protection Agency (EPA) drinking water standards. Concentrations of several elements were elevated in the waste rock and mine tailings compared with concentrations in sediments collected in background areas. A subset of 15 sediment samples was leached to simulate precipitation interacting with the solid material. Analysis of leachate samples compared to groundwater samples suggests that groundwater samples collected in this study are distinct from leachate samples associated with mining related material. Results suggest that at this time groundwater samples collected during this investigation are not influenced by elements leached from Old Yuma Mine materials.

  3. Manufacturing Methods and Technology Project Summary Reports

    DTIC Science & Technology

    1986-07-01

    Yuma Proving Ground in January 1985. The ARBAT system provides a unique real-time computer capability to identify all critical flight...cheaper tnaii the existing radar system. This prototype is expected to save over ^1 million per year at Yuma Proving Grounds . TECOM is planning to...purchase 4 production ballistic radar systems to be installed at Yuma Proving Grounds , Dugway Proving Grounds , and Jefferson Proving Grounds at a

  4. Nevada Test and Training Range Depleted Uranium Target Disposal Environmental Assessment

    DTIC Science & Technology

    2005-03-01

    to establish the probability and scope of such transport. Long-Term Fate of Depleted Uranium at Aberdeen and Yuma Proving Grounds Phase II: Human...1990. Long-Term Fate of Depleted Uranium at Aberdeen and Yuma Proving Grounds Final Report, Phase 1: Geochemical Transport and Modeling. Los...of Depleted Uranium at Aberdeen and Yuma Proving Grounds , Phase II: Human Health and Ecological Risk Assessments. Los Alamos National Laboratory

  5. ESTCP UXO Discrimination Study. MTADS Demonstration at Camp Sibert Magnetometer / EM61 MkII / GEM-3 Arrays, Gadsden, AL, April 2007

    DTIC Science & Technology

    2008-08-21

    Yuma Proving Ground Open Field ............................................................................... 76 B.3.1 Response Stage... Yuma Proving Ground ZIP (250) Iomega ZIP disk (250 MB version) xv ACKNOWLEDGEMENTS Glenn Harbaugh and Daniel Steinhurst (P.I.) of Nova Research...sites at Aberdeen Proving Ground and Yuma Proving Ground in 2003 and 2004 [6]. At each of the sites, the Calibration Lanes, the Blind Test Grid

  6. BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING SOUTH. THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING SOUTH. THE OUTSIDE FACE OF THE NORTH WALL OF SETTLING RESERVOIR NO. 3 IS SEEN AT THE RIGHT. THE SETTLING RESERVOIR IS ELEVATED ABOVE THE FILTERING RESERVOIR TO ACHIEVE GRAVITY WATER FLOW FROM THE SETTLING RESERVOIR INTO THE FILTERING RESERVOIR. - Yuma Main Street Water Treatment Plant, Blaisdell Slow Sand Filter Washing Machine, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  7. VIEW LOOKING NORTHWEST TOWARD SOUTHEAST CORNER OF SETTLING RESERVOIR NO. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW LOOKING NORTHWEST TOWARD SOUTHEAST CORNER OF SETTLING RESERVOIR NO. 3. THE SOUTHWEST CORNER OF SETTLING RESERVOIR NO. 1 IS AT THE FAR LEFT. THE BLAISDELL SLOW SAND FILTER WASHING MACHINE IS SEEN AT THE RIGHT. THE SOUTHERN PACIFIC RAILROAD RESERVOIR IS SEEN ON THE HORIZON AT LEFT. JONES STREET IS IN THE FOREGROUND. - Yuma Main Street Water Treatment Plant, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  8. The Pomona-Rincon Road and Its Place in the Regional Transportation Network

    DTIC Science & Technology

    1989-10-19

    on American soil by diverting north of Pilot Knob (near Yuma in Imperial County) to Indian Wells, near Indio. This proved impossible, due to desert...Overland Mail, and then the Fort Yuma to Los Angeles Road. Portions of this route are still extant in the Prado Basin south of Euclid Avenue. The Serrano...Emigrant Trail. It became the route of the Butterfield Overland Mail, and then the Fort Yuma to Los Angeles Road. Portions of this route are still extant in

  9. Transportation impacts to wildlife on state route 37 in northern San Pablo Bay, California

    USGS Publications Warehouse

    Winton, Bryan R.; Takekawa, John Y.

    2002-01-01

    State Route 37 bisects conservation lands managed by San Pablo Bay National Wildlife Refuge (U.S. Fish & Wildlife Service) and Napa-Sonoma Marshes Wildlife Area (California Department of Fish and Game) in Solano and Sonoma Counties. The 2-lane highway connects Interstates 101 and 80 in northern San Francisco Bay and experiences ~26,000 vehicles per day. Road-killed wildlife between Napa River and Tolay Creek bridges (14.7 km) were counted in 2000 to ascertain species composition, relative abundance, and relative occurence (animal fatality interval). The primary objectives of the study were to determine if endangered salt marsh harvest mice (Reithrodontomys raviventris), California clapper rails (Rallus longirostris), or other species of concern were represented, and to collect baseline data on transportation impacts to wildlife in the area. During 51 surveys, 291 dead birds (54.6%) and mammals (45.4%) were observed. Endangered species were not positively identified dead on the highway. In total, 28 bird, 10 mammal and 1 reptile species were positively identified along this section of highway that traverses tidal marsh and diked baylands (i.e., salt ponds, seasonal wetlands, and oat-hay agriculture fields). The mean animal fatality interval for both lanes was one road-kill every 2.1km (2.1 km SD).

  10. BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING SOUTHEAST. THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING SOUTHEAST. THE ELECTRIC TROLLEY IS SEEN AT THE LEFT. THE BULKHEAD SEEN AT THE LOWER RIGHT IS NOT PART OF THE MACHINE; IT WAS INSTALLED TO RETAIN THE FILTER SAND AFTER THE MACHINE WAS NO LONGER USED. THE NORTHWEST CORNER OF SETTLING RESERVOIR NO. 4 IS SEEN IN THE DISTANCE BELOW THE RIGHT SIDE OF THE TROLLEY. - Yuma Main Street Water Treatment Plant, Blaisdell Slow Sand Filter Washing Machine, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  11. RadNet Air Data From Yuma, AZ

    EPA Pesticide Factsheets

    This page presents radiation air monitoring and air filter analysis data for Yuma, AZ from EPA's RadNet system. RadNet is a nationwide network of monitoring stations that measure radiation in air, drinking water and precipitation.

  12. Primary Ciliary Dyskinesia

    MedlinePlus

    ... made to help with CPT, such as: An electric chest clapper, known as a mechanical percussor. An ... your child spends time, including the home and car. Encourage your child to never start smoking. For ...

  13. Binational Dengue Outbreak Along the United States-Mexico Border - Yuma County, Arizona, and Sonora, Mexico, 2014.

    PubMed

    Jones, Jefferson M; Lopez, Benito; Adams, Laura; Gálvez, Francisco Javier Navarro; Núñez, Alfredo Sánchez; Santillán, Nubia Astrid Hernández; Plante, Lydia; Hemme, Ryan R; Casal, Mariana; Hunsperger, Elizabeth A; Muñoz-Jordan, Jorge; Acevedo, Veronica; Ernst, Kacey; Hayden, Mary; Waterman, Steve; Gomez, Diana; Sharp, Tyler M; Komatsu, Kenneth K

    2016-05-20

    Dengue is an acute febrile illness caused by any of four dengue virus types (DENV-1-4). DENVs are transmitted by mosquitos of the genus Aedes (1) and are endemic throughout the tropics (2). In 2010, an estimated 390 million DENV infections occurred worldwide (2). During 2007-2013, a total of three to 10 dengue cases were reported annually in Arizona and all were travel-associated. During September-December 2014, coincident with a dengue outbreak in Sonora, Mexico, 93 travel-associated dengue cases were reported in Arizona residents; 70 (75%) cases were among residents of Yuma County, which borders San Luis Río Colorado, Sonora, Mexico. San Luis Río Colorado reported its first case of locally acquired dengue in September 2014. To investigate the temporal relationship of the dengue outbreaks in Yuma County and San Luis Río Colorado and compare patient characteristics and signs and symptoms, passive surveillance data from both locations were analyzed. In addition, household-based cluster investigations were conducted near the residences of reported dengue cases in Yuma County to identify unreported cases and assess risk for local transmission. Surveillance data identified 52 locally acquired cases (21% hospitalized) in San Luis Río Colorado and 70 travel-associated cases (66% hospitalized) in Yuma County with illness onset during September-December 2014. Among 194 persons who participated in the cluster investigations in Yuma County, 152 (78%) traveled to Mexico at least monthly during the preceding 3 months. Four (2%) of 161 Yuma County residents who provided serum samples for diagnostic testing during cluster investigations had detectable DENV immunoglobulin M (IgM); one reported a recent febrile illness, and all four had traveled to Mexico during the preceding 3 months. Entomologic assessments among 105 households revealed 24 water containers per 100 houses colonized by Ae. aegypti. Frequent travel to Mexico and Ae. aegypti colonization indicate risk for local transmission of DENV in Yuma County. Public health officials in Sonora and Arizona should continue to collaborate on dengue surveillance and educate the public regarding mosquito abatement and avoidance practices. Clinicians evaluating patients from the U.S.-Mexico border region should consider dengue in patients with acute febrile illness and report suspected cases to public health authorities.

  14. Transit development plan for the Yuma regional area

    DOT National Transportation Integrated Search

    1993-12-16

    The purpose of this Transit Development Pan (TDP) is to indicate how transit could be implemented in the Yuma area, if and when, the local agencies decide to initiate public transit and utilize Federal Transit Administration (FTA) funds. The Plan dem...

  15. DETERMINANTS OF CHILDREN'S PESTICIDE EXPOSURE IN YUMA COUNTY, ARIZONA

    EPA Science Inventory

    In 1999-2000, researchers from US EPA's Office of Research and Development in collaboration with several government and academic institutions conducted pesticide exposure assessment studies in Yuma county. Results from these studies have been previously reported (Gordon SM, et a...

  16. BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING SOUTH. THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    BLAISDELL SLOW SAND FILTER WASHING MACHINE. VIEW LOOKING SOUTH. THE SUCTION (INTAKE) HOSE IS SEEN AT THE LEFT RESTING ON THE FILTER BED SURFACE; THE DISCHARGE HOSE IS AT THE RIGHT, RUNNING FROM THE BOTTOM OF THE CENTRAL VERTICAL AXLE TO THE CENTRIFUGAL PUMP. FROM THE PUMP WATER IS DISCHARGED THROUGH THE HORIZONTAL PIPE LOCATED UNDER THE EDGE OF PLATFORM DECK INTO THE WASTE-WATER TROUGH (NOT SEEN IN THIS VIEW). - Yuma Main Street Water Treatment Plant, Blaisdell Slow Sand Filter Washing Machine, Jones Street at foot of Main Street, Yuma, Yuma County, AZ

  17. Avian communities in tidal salt marshes of San Francisco Bay: a review of functional groups by foraging guild and habitat association

    USGS Publications Warehouse

    Takekawa, John Y.; Woo, Isa; Gardiner, Rachel J.; Casazza, Michael L.; Ackerman, Joshua T.; Nur, Nadav; Liu, Leonard; Spautz, Hildie; Palaima, Arnas

    2011-01-01

    The San Francisco Bay estuary is highly urbanized, but it supports the largest remaining extent of tidal salt marshes on the west coast of North America as well as a diverse native bird community. San Francisco Bay tidal marshes are occupied by more than 113 bird species that represent 31 families, including five subspecies from three families that we denote as tidal-marsh obligates. To better identify the niche of bird species in tidal marshes, we present a review of functional groups based on foraging guilds and habitat associations. Foraging guilds describe the method by which species obtain food from tidal marshes, while habitat associations describe broad areas within the marsh that have similar environmental conditions. For example, the ubiquitous song sparrows (Alameda Melospiza melodia pusillula, Suisun M. m. maxillaris, and San Pablo M. m. samuelis) are surface-feeding generalists that consume prey from vegetation and the ground, and they are found across the entire marsh plain into the upland–marsh transition. In contrast, surface-feeding California black rails (Laterallus jamaicensis coturniculus) are cryptic, and generally restricted in their distribution to the mid- and high-marsh plain. Although in the same family, the endangered California clapper rail (Rallus longirostris obsoletus) has become highly specialized, foraging primarily on benthic fauna within marsh channels when they are exposed at low tide. Shorebirds such as the black-necked stilt (Himantopus mexicanus) typically probe in mud flats to consume macroinvertebrate prey, and are generally restricted to foraging on salt pans within the marsh plain, in ponds, or on mud flats during transitional stages of marsh evolution. The abundance and distribution of birds varies widely with changing water depths and vegetation colonization during different stages of restoration. Thus, tidal-marsh birds represent a rich and diverse community in bay marshes, with niches that may be distinguished by the food resources they consume and the habitats that they occupy along the tidal gradient.

  18. 75 FR 81190 - Television Broadcasting Services; Yuma, AZ

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-27

    ... FEDERAL COMMUNICATIONS COMMISSION 47 CFR Part 73 [DA 10-2365; MB Docket No. 02-151; RM-10453] Television Broadcasting Services; Yuma, AZ AGENCY: Federal Communications Commission. ACTION: Dismissal... or via e-mail http://www.BCPIWEB.com . To request this document in accessible formats (computer...

  19. 77 FR 43115 - Notice of Temporary Closure of Betty's Kitchen Wildlife and Interpretive Area, Yuma County, AZ

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-23

    ... Road, Yuma, Arizona 85365, via email at [email protected] , or telephone 928-317-3200. Persons who use a... closure is needed to reduce or eliminate the likelihood of accidents to visitors while fishing, picnicking...

  20. WELLTON GOVERNMENT CAMP, PERMANENT GARAGE TYPE 1G. PLAN, ELEVATIONS, AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    WELLTON GOVERNMENT CAMP, PERMANENT GARAGE TYPE 1-G. PLAN, ELEVATIONS, AND SECTIONS. Drawing 50-308-4552, dated October 25, 1949. U.S. Department of the Interior, Bureau of Reclamation, Yuma, Arizona - Wellton-Mohawk Irrigation System, Permanent Garage Type 1-G, 30601 Wellton-Mohawk Drive, Wellton, Yuma County, AZ

  1. PESTICIDES IN DUST SAMPLES FROM HOMES AND SCHOOLS IN YUMA, ARIZONA

    EPA Science Inventory

    A pilot study was conducted in Yuma, Arizona to investigate children's exposure to pesticides as detected in urine and dust samples. The principle hypothesis of the study is that pesticide levels in young children vary with the distance children live or attend school from agric...

  2. Integrated Science Investigations of the Salton Sea, California, USA

    NASA Astrophysics Data System (ADS)

    Barnum, D.

    2006-12-01

    The Salton Sea is the latest waterbody to be formed by Colorado River floodwaters within the Salton Trough. Over the past 100 years, floodwaters have been replaced by agricultural drainage water and municipal discharges so that today, most of the water reaching the Salton Sea is agricultural drainwater flowing down the New, Alamo and Whitewater Rivers. An evaporation of about 6 feet per year and inputs of more than 4 million tons of salt per year have increased salinity of the waters of the Salton Sea. The current salinity level of approximately 46 parts per thousand is about 25% more saline than ocean water. Diverting water from the Imperial Valley agricultural lands to urban Southern California, and anticipated loss of inflows from Mexico and increasing water conservation activities will result in less water flowing into the Salton Sea. A Restoration Program is being conducted to evaluate the effects of diminished inflows on the Salton Sea Ecosystem and recommend alternatives to avoid or minimize those effects. The Salton Sea has become increasingly important as habitat for migratory birds because of wetland losses. California has lost approximately 91% of interior wetland acreage from pre-settlement until the mid-1980's. The Salton Sea provides critical habitat linking distant wetlands of Pacific and Central Flyways to wintering habitats in Mexico and Central and South America. More than 400 species of birds have been observed in the Salton Sea Ecosystem. Large percentages of the populations for several bird species such as the endangered Yuma Clapper Rail, the Eared Grebe, Snowy Plover and American White Pelican utilize the Salton Sea. Approximately 20 species of conservation concern utilize the Salton Sea ecosystem. Fish-eating birds such as Great Blue Herons, California Brown Pelicans, Double-crested Cormorants and several species of egrets are highly dependent upon the fishery of the Salton Sea. The Salton Sea fishery is now primarily comprised of tilapia. However, as recently as 2001 the fishery was comprised of tilapia and 3 species of salt water fish, and was described as one of the most productive fisheries in the world. The loss of the fishery has significant consequences for the fish-eating birds and a productive sport fishing industry. Arresting salinity as a means for sustaining the fishery of the Salton Sea is a major focus for the Salton Sea Restoration Project. Other issues affecting restoration include selenium, hydrogen sulfide generating sediments, air quality issues associated with the amount of the current Salton Sea that will become dry, loss of migratory bird habitat as the lake level recedes, and loss of invertebrate communities. The USGS Salton Sea Science Office is working with state, local and tribal governments, academic institutions, and other federal agencies to develop integrated plans for evaluating nutrient dynamics, contaminants for migratory birds and human health, evaluations of various restoration alternatives, avian population dynamics, air quality related studies including sediment characterization of the Salton Sea lake bed and emissions data analysis, larval fish abundance and distribution data analysis, salinity tolerance limits for fish, and wetland habitat restoration.

  3. Rising seas and sinking coastal marshes: Implications to Atlantic waterbirds

    USGS Publications Warehouse

    Erwin, R.M.; Prosser, D.J.; Sanders, G.

    2000-01-01

    Along the mid-Atlantic U.S. coast, relative sea level rise (RSLR) is higher than the global average of 1.5-2.0 mm/yr, ranging from about 2.5 in parts of Virginia and Delaware to about 4.0 in New Jersey (Atlantic City and Sandy Hook) and near the mouth of Chesapeake Bay, Virginia. Very few data exist on marsh elevation changes, but information from some areas in Virginia, New Jersey and New York suggest that marsh islands are not 'keeping pace' with this RSLR. We began a study in 1999 that addresses changes in sea level and marsh elevation at sites from Cape Cod to s. Virginia known to be important areas for migratory waterbirds, including waterfowl, shorebirds, wading birds, and seabirds. Marsh monitoring sites have been established and data on microhabitat use by birds during all 4 seasons is being collected at these sites. Species expected to be most vulnerable to RSLR in these marshes are breeding species such as Laughing Gulls, Common, Gull-billed and Forster's terns, Clapper Rails, and American Black Ducks. Most of these species are of special concern at state, regional, or national levels. We show how important this region to these species from a flyway perspective, with> 70% of all Atlantic coast Laughing Gulls and Forster's Terns nesting from New Jersey to Virginia.

  4. WELLTON GOVERNMENT CAMP, PERMANENT GARAGE TYPE 2G. PLAN, ELEVATIONS, AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    WELLTON GOVERNMENT CAMP, PERMANENT GARAGE TYPE 2-G. PLAN, ELEVATIONS, AND SECTIONS. Drawing 50-308-4553, dated October 21, 1949. U.S. Department of the Interior, Bureau of Reclamation, Yuma, Arizona - Wellton-Mohawk Irrigation System, Permanent Garage Type 2-G, 30611 and 30621 Wellton-Mohawk Drive, Wellton, Yuma County, AZ

  5. Quechan Tribe Comprehensive Plan.

    ERIC Educational Resources Information Center

    Peterson, Mike; Calnimptewa, Gerald

    The Fort Yuma Reservation of the Quechan Tribe is located on 9,246 acres in the southwest corner of California in Imperial County and the southeast corner of Arizona in Yuma County. Historical records indicate the Quechans have inhabited the area since approximately 800 A.D. The 1974 tribal rolls show a population of 1,687. The unemployment rate…

  6. The Longitudinal Link between Student Health and Math Achievement Scores

    ERIC Educational Resources Information Center

    Garcy, Anthony M.

    2009-01-01

    This study investigated the relationship between health conditions suffered over time and student scores on the Stanford Achievement Test 9 in Yuma County, Arizona, public grade schools. The majority of children in Yuma County were of Hispanic origin. The poverty and low income status of most of these children placed them at greater risk for…

  7. Yuma Border Patrol Lighting Retrofit: Final LED System Performance Assessment of Trial and Full Installation

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Wilkerson, Andrea; Sullivan, Gregory P.; Davis, Robert G.

    Along the Yuma Sector Border Patrol Area in Yuma, Arizona, the GATEWAY program conducted a trial evaluation in which the incumbent quartz metal halide area lighting was replaced with LED at three pole locations, and illuminance measurements were recorded initially and at 2500 hours, 5000 hours, 7000, and 11,000 hours of operation. Additionally, four second-generation LED luminaires installed as part of the full installation were evaluated initially and again after 4,000 hours of operation. While the initial energy, lighting quality, and maintenance benefits relative to the incumbent high-pressure sodium system were very satisfactory, the study raises important questions regarding themore » long-term performance of LED lighting systems in high-temperature environments.« less

  8. 75 FR 28642 - Limiting Mountain Lion Predation on Desert Bighorn Sheep on Kofa National Wildlife Refuge, Yuma...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-21

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R2-R-2009-N274] [22570-1261-0000-K2] Limiting Mountain Lion Predation on Desert Bighorn Sheep on Kofa National Wildlife Refuge, Yuma and La Paz Counties, AZ AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of availability of the final...

  9. Registration of ‘Mace’ hard red winter wheat

    USDA-ARS?s Scientific Manuscript database

    ‘Mace’ (Reg. No. CV PI 651043) hard red winter wheat (Triticum aestivum L.) was developed by the USDA-ARS and the Nebraska Agricultural Experiment Station and released in December, 2007. Mace was selected from the cross Yuma//PI 372129/3/CO850034/4/4*Yuma/5/(KS91H184/Arlin S//KS91HW29/3/NE89526)....

  10. Memorandum on ground-water conditions in parts of Tps. 10 and 11 S., Rs. 23 and 24 W., Yuma County, Arizona

    USGS Publications Warehouse

    Johnson, P.W.

    1954-01-01

    In response to a request from J.R. Burger, Acting State Land Commissioner, dated September 24, 1953, a brief reconnaissance was made of ground-water conditions in southwestern Yuma County, Ariz.  This memorandum is based on the reconnaissance and on review of data available from other agencies.

  11. Defense Infrastructure: The Enhanced Use Lease Program Requires Management Attention

    DTIC Science & Technology

    2011-06-01

    included in our EUL case studies, the escrow agreements executed by the Army in connection with the EUL at Yuma Proving Ground , Arizona, and the EUL at...research park. 6 Army Redstone Arsenal, Alabama 2009 50 468 acres Site for office and research center development. 7 Army Yuma Proving Ground ...9The three Army EUL case studies were located at Aberdeen Proving Ground , Maryland; Fort

  12. Treating Substance Abuse Offenders in the Southwestern United States: A Report Evaluating the Long-Term Effectiveness of the Yuma County Adult Drug Court

    ERIC Educational Resources Information Center

    McCarthy, Sherri; Waters, Thomas Franklin

    2003-01-01

    This report summarizes data gathered from the 64 graduates of the Yuma County Drug Court from 1998 to 2001. Those who agreed to participate were interviewed at 3, 6, 12 and/or 18 months after graduation. Instruments used included the Addiction Severity Index, the CSAT GPRA Client Outcomes Measure for Discretionary Programs and a questionnaire…

  13. Tropic Testing of Vehicles

    DTIC Science & Technology

    2014-08-27

    kilometer track running through tropical forest . The track is a combination of a bauxite/dirt base with grades on the road up to 20 percent and log...TYPE Final 3. DATES COVERED (From - To) 4. TITLE AND SUBTITLE Test Operations Procedure (TOP) 02-2-817A Tropic Testing of Vehicles 5a...PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) U.S. Army Yuma Proving Ground Tropic Regions Test Center (TEDT-YPT) 301 C. Street Yuma, AZ

  14. DOE Office of Scientific and Technical Information (OSTI.GOV)

    Wilkerson, Andrea M.; McCullough, Jeffrey J.

    The Yuma Sector Border Patrol Area is a high flux lighting application in a high temperature environment, presenting a formidable challenge for light-emitting diodes (LEDs). This retrofit is an Energy Savings Performance Contract ENABLE project under the U.S. Department of Energy (DOE) Federal Energy Management Program. If high flux LED technology performs well in a region with high ambient temperature and solar radiation, it can perform well in most outdoor environments. The design process for the Yuma retrofit has already provided valuable knowledge to CBP and DOE. The LED lighting system selected for the retrofit is expected to reduce energymore » consumption 69% compared to the incumbent quartz metal halide (QMH) lighting system. If the LED lighting system is installed, GATEWAY will continue to document and disseminate information regarding the installation and long-term performance so that others may also gain valuable knowledge from the Yuma Sector Border Patrol Area lighting retrofit.« less

  15. Marsh birds and the North American Breeding Bird Survey: judging the value of a landscape level survey for habitat specialist species with low detection rates

    USGS Publications Warehouse

    Sauer, J.R.

    1999-01-01

    The North American Breeding Bird Survey was started in 1966, and provides information on population change for >400 species of birds. it covers the continental United States, Canada, and Alaska, and is conducted once each year, in June, by volunteer observers. A 39.4 kIn roadside survey route is driven starting 30 min before sunrise, and a 3 min point count is conducted at each of 50 stops spaced every 0.8 kIn. Existing analyses of the data are internet-based (http://www.mbr-pwrc.usgs.govlbbslbbs.html), and include maps of relative abundance, estimates of population change including trends (%/yr), composite annual indices (pattern in time), and maps of population trend (pattern in space). At least 36 species of marsh birds are encountered on the BBS, and the survey provides estimates with greatly varying levels of efficiency for the species. It is often difficult to understand how well the BBS surveys a species. Often, efficiency is judged by estimating trend and its variance for a species, then by calculating power and needed samples to detect a prespecified trend over some time period (e.g., a 2%/yr trend over 31 yr). Unfortunately, this approach is not always valid, as estimated trends and variances can be of little use if the population is poorly sampled. Lurking concerns with BBS data include (1) incomplete coverage of species range; (2) undersampling of habitats; and (3) low and variable visibility of birds during point counts. It is difficult to evaluate these concerns, because known populations do not exist for comparison with counts, and detection rates are time-consuming and costly to estimate. I evaluated the efficiency of the BBS for selected rails (Rallidae) and snipes (Scolopacidae), presenting estimates of population trend over 1966-1996 (T), power to detect 2%/yr trend over 31 yr, needed samples to achieve power of 0.75 with alpha= 0.1, number of survey routes with data for the species (N), average abundance on survey routes (RA), and maps of relative abundance. Examples include Yellow Rail (Coturnicops noveboracensis) (T=12 %/yr; P= 0.0085; N =28; routes; RA=0.05; Power=0.37; Needed samples=85), Black Rail (Laterallus jamaicensis) (No trend data or power information available, N =8), Clapper Rail (Rallus longirostris) (T=1.9%/yr; P=0.55; N =64; RA=0.31; Power=0.35; Needed samples=590), King Rail (Rallus elegans) (T=-4.2 %/yr; P= 0.03; N =76; Power=0.41; Needed samples=159), Sora (Porzana carolina) (T=0.98 %/yr; P= 0.24; N =720; RA= 0.92; Power=0.69; Needed samples= 377), and Common Snipe (Gallinago gallinago) (T=-0.24 %/yr; P= 0.54; N =1412; RA= 2.19; Power=0.98; Needed samples=205). With regard to quality of BBS data, marsh birds fall into 3 categories: (1) almost never encountered on BBS routes; (2) encountered at extremely low abundances on BBS routes; and (3) probably fairly well sampled by BBS roadside counts. BBS data can provide useful information for many marsh bird species, but users should be aware of the limitations of the BBS sample for monitoring species that have low visibility from point counts and prefer habitats not often encountered on roadsides.

  16. Hydrogeologic framework refinement, ground-water flow and storage, water-chemistry analyses, and water-budget components of the Yuma area, southwestern Arizona and southeastern California

    USGS Publications Warehouse

    Dickinson, Jesse; Land, Michael; Faunt, Claudia C.; Leake, S.A.; Reichard, Eric G.; Fleming, John B.; Pool, D.R.

    2006-01-01

    The ground-water and surface-water system in the Yuma area in southwestern Arizona and southeastern California is managed intensely to meet water-delivery requirements of customers in the United States, to manage high ground-water levels in the valleys, and to maintain treaty-mandated water-quality and quantity requirements of Mexico. The following components in this report, which were identified to be useful in the development of a ground-water management model, are: (1) refinement of the hydrogeologic framework; (2) updated water-level maps, general ground-water flow patterns, and an estimate of the amount of ground water stored in the mound under Yuma Mesa; (3) review and documentation of the ground-water budget calculated by the Bureau of Reclamation, U.S. Department of the Interior (Reclamation); and (4) water-chemistry characterization to identify the spatial distribution of water quality, information on sources and ages of ground water, and information about the productive-interval depths of the aquifer. A refined three-dimensional digital hydrogeologic framework model includes the following hydrogeologic units from bottom to top: (1) the effective hydrologic basement of the basin aquifer, which includes the Pliocene Bouse Formation, Tertiary volcanic and sedimentary rocks, and pre-Tertiary metamorphic and plutonic rocks; (2) undifferentiated lower units to represent the Pliocene transition zone and wedge zone; (3) coarse-gravel unit; (4) lower, middle, and upper basin fill to represent the upper, fine-grained zone between the top of the coarse-gravel unit and the land surface; and (5) clay A and clay B. Data for the refined model includes digital elevation models, borehole lithology data, geophysical data, and structural data to represent the geometry of the hydrogeologic units. The top surface of the coarse-gravel unit, defined by using borehole and geophysical data, varies similarly to terraces resulting from the down cutting of the Colorado River. Clay A is nearly the same as the previous conceptual hydrogeologic model definition (Olmsted and others, 1973), except for a minor westward extension from the city of Yuma. Clay B is extended to the southerly international boundary and increased in areal extent by about two-thirds of the original extent (Olmsted and others, 1973). The other hydrogeologic units generally are the same as in the previous conceptual hydrogeologic model. Before development, the Colorado and Gila Rivers were the sources of nearly all the ground water in the Yuma area through direct infiltration of water from river channels and annual overbank flooding. After construction of upstream reservoirs and clearing and irrigation of the floodplains, the rivers now act as drains for the ground water. Ground-water levels in most of the Yuma area are higher now than they were in predevelopment time. A general gradient of ground-water flow toward the natural discharge area south of the Yuma area still exists, but many other changes in flow are evident. Ground water in Yuma Valley once flowed away from the Colorado River, but now has a component of flow towards the river and Mexicali Valley. A ground-water mound has formed under Yuma Mesa from long-term surface-water irrigation; about 600,000 to 800,000 acre-ft of water are stored in the mound. Ground-water withdrawals adjacent to the southerly international boundary have resulted in water-level declines in that area. The reviewed and documented water budget includes the following components: (1) recharge in irrigated areas, (2) evapotranspiration by irrigated crops and phreatophytes, (3) ground-water return flow to the Colorado River, and (4) ground-water withdrawals (including those in Mexicali Valley). Recharge components were calculated by subtracting the amount of water used by crops from the amount of water delivered. Evapotranspiration rates were calculated on the basis of established methods, thus were appropriate for input to the ground-wate

  17. Final Environmental Impact Statement MX: Buried Trench Construction and Test Project.

    DTIC Science & Technology

    1977-11-01

    miles ’li kmn) away from the s:te along Interstate Highway 3. The nearest : ommunities are Dateland, Arizona , stlmated population less than L00) and...tend to con- centrate in Yuma City, and other groups are randomly distributed through- out the population centers (38, 39). Tourism is an important... tourism to Yuma. The government sector is about the same size as agriculture as a source or earnings, and the presence of substantial military activities

  18. Geothermal Potential of Marine Corps Air Station, Yuma, Arizona, and the Western Portion of Luke-Williams Gunnery Range

    DTIC Science & Technology

    1988-01-01

    region appears to be a temporal as well as a spatial transition zone between the emplacement of the majority of the Arizona porphyry coppers during... Porphyry Copper Deposits of the Western Hemisphere. American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc., 1978, 219 pp. 30. U.S...NWC TP 6827 S Geothermal Potential of Marine Corps Air Station, Yuma, Arizona , and the Western Portion of Luke-Williams Gunnery Range by Steven C

  19. Wetland Accretion Rate Model of Ecosystem Resilience (WARMER) and its application to habitat sustainability for endangered species in the San Francisco Estuary

    USGS Publications Warehouse

    Swanson, Kathleen M.; Drexler, Judith Z.; Schoellhamer, David H.; Thorne, Karen M.; Casazza, Michael L.; Overton, Cory T.; Callaway, John C.; Takekawa, John Y.

    2014-01-01

    Salt marsh faunas are constrained by specific habitat requirements for marsh elevation relative to sea level and tidal range. As sea level rises, changes in relative elevation of the marsh plain will have differing impacts on the availability of habitat for marsh obligate species. The Wetland Accretion Rate Model for Ecosystem Resilience (WARMER) is a 1-D model of elevation that incorporates both biological and physical processes of vertical marsh accretion. Here, we use WARMER to evaluate changes in marsh surface elevation and the impact of these elevation changes on marsh habitat for specific species of concern. Model results were compared to elevation-based habitat criteria developed for marsh vegetation, the endangered California clapper rail (Rallus longirostris obsoletus), and the endangered salt marsh harvest mouse (Reithrodontomys raviventris) to determine the response of marsh habitat for each species to predicted >1-m sea-level rise by 2100. Feedback between vertical accretion mechanisms and elevation reduced the effect of initial elevation in the modeled scenarios. Elevation decreased nonlinearly with larger changes in elevation during the latter half of the century when the rate of sea-level rise increased. Model scenarios indicated that changes in elevation will degrade habitat quality within salt marshes in the San Francisco Estuary, and degradation will accelerate in the latter half of the century as the rate of sea-level rise accelerates. A sensitivity analysis of the model results showed that inorganic sediment accumulation and the rate of sea-level rise had the greatest influence over salt marsh sustainability.

  20. Hazard-Ranking of Agricultural Pesticides for Chronic Health Effects in Yuma County, Arizona

    PubMed Central

    Sugeng, Anastasia J.; Beamer, Paloma I.; Lutz, Eric A.; Rosales, Cecilia B.

    2013-01-01

    With thousands of pesticides registered by the United States Environmental Protection Agency, it not feasible to sample for all pesticides applied in agricultural communities. Hazard-ranking pesticides based on use, toxicity, and exposure potential can help prioritize community-specific pesticide hazards. This study applied hazard-ranking schemes for cancer, endocrine disruption, and reproductive/developmental toxicity in Yuma County, Arizona. An existing cancer hazard-ranking scheme was modified, and novel schemes for endocrine disruption and reproductive/developmental toxicity were developed to rank pesticide hazards. The hazard-ranking schemes accounted for pesticide use, toxicity, and exposure potential based on chemical properties of each pesticide. Pesticides were ranked as hazards with respect to each health effect, as well as overall chronic health effects. The highest hazard-ranked pesticides for overall chronic health effects were maneb, metam sodium, trifluralin, pronamide, and bifenthrin. The relative pesticide rankings were unique for each health effect. The highest hazard-ranked pesticides differed from those most heavily applied, as well as from those previously detected in Yuma homes over a decade ago. The most hazardous pesticides for cancer in Yuma County, Arizona were also different from a previous hazard-ranking applied in California. Hazard-ranking schemes that take into account pesticide use, toxicity, and exposure potential can help prioritize pesticides of greatest health risk in agricultural communities. This study is the first to provide pesticide hazard-rankings for endocrine disruption and reproductive/developmental toxicity based on use, toxicity, and exposure potential. These hazard-ranking schemes can be applied to other agricultural communities for prioritizing community-specific pesticide hazards to target decreasing health risk. PMID:23783270

  1. Strategic Studies Quarterly. Winter 2015

    DTIC Science & Technology

    2016-09-19

    and policy that nurtured it and Amer- ica to greatness. While 600 million people watched Apollo 11 landing on the moon, only 11,000 watched...Business,” Washington Post, 11 February 2013. 64. James R. Clapper, Worldwide Threat Assessment of the US Intelligence Community , state- ment for the...aerospace community united for the “first offset strategy” of integrating nuclear warheads on bombs and missiles, which enabled Pres. Dwight

  2. Hazard-ranking of agricultural pesticides for chronic health effects in Yuma County, Arizona.

    PubMed

    Sugeng, Anastasia J; Beamer, Paloma I; Lutz, Eric A; Rosales, Cecilia B

    2013-10-01

    With thousands of pesticides registered by the United States Environmental Protection Agency, it not feasible to sample for all pesticides applied in agricultural communities. Hazard-ranking pesticides based on use, toxicity, and exposure potential can help prioritize community-specific pesticide hazards. This study applied hazard-ranking schemes for cancer, endocrine disruption, and reproductive/developmental toxicity in Yuma County, Arizona. An existing cancer hazard-ranking scheme was modified, and novel schemes for endocrine disruption and reproductive/developmental toxicity were developed to rank pesticide hazards. The hazard-ranking schemes accounted for pesticide use, toxicity, and exposure potential based on chemical properties of each pesticide. Pesticides were ranked as hazards with respect to each health effect, as well as overall chronic health effects. The highest hazard-ranked pesticides for overall chronic health effects were maneb, metam-sodium, trifluralin, pronamide, and bifenthrin. The relative pesticide rankings were unique for each health effect. The highest hazard-ranked pesticides differed from those most heavily applied, as well as from those previously detected in Yuma homes over a decade ago. The most hazardous pesticides for cancer in Yuma County, Arizona were also different from a previous hazard-ranking applied in California. Hazard-ranking schemes that take into account pesticide use, toxicity, and exposure potential can help prioritize pesticides of greatest health risk in agricultural communities. This study is the first to provide pesticide hazard-rankings for endocrine disruption and reproductive/developmental toxicity based on use, toxicity, and exposure potential. These hazard-ranking schemes can be applied to other agricultural communities for prioritizing community-specific pesticide hazards to target decreasing health risk. Copyright © 2013 Elsevier B.V. All rights reserved.

  3. Studies in Intelligence. Volume 55, Number 3

    DTIC Science & Technology

    2011-09-01

    hearing, Director of National Intelligence (DNI) James R. Clapper noted the need for a single repository of terrorism- related data as a foundation...A CIA Memoir by Stuart Methven The Making And Breaking Of An American Spy, by James Everett Intelligence Abroad Ashraf Marwan, Israel’s Most Valuable...Bureau cases. He includes bio - graphical details about special agents and illu- minates the often frustrating bureaucratic culture in which they

  4. Studies in Intelligence. Volume 58, Number 1, March 2014

    DTIC Science & Technology

    2014-03-01

    contact for defense intelli- gence, more effective implementa- tion of DCI policy guidance, consolidated oversight of DoD pro - grams and improved...disparate parts of the budget. As USD(I) Clapper went even fur- ther in exercising MIP authorities and developing an intelligence pro - gram between...the MIP and the broader National Intelligence Pro - gram (NIP), making defense intelli- gence program planning more effective and efficient. Over time

  5. SAAM: A Method for Analyzing the Properties of Software Architectures

    DTIC Science & Technology

    2007-05-01

    ABSTRACT Same as Report (SAR) 18. NUMBER OF PAGES 10 19a. NAME OF RESPONSIBLE PERSON a. REPORT unclassified b . ABSTRACT unclassified c. THIS PAGE...of Software Engineering. [3] Bass, L., Clapper, B ., Hardy, E., Kazman, R., Seacord, R. “Serpent: A User Interface Management System”. Proceedings of...Forthcoming. [9] Green, J., Selby, B . “Dynamic Planning and Software Mainte- nance: A Fiscal Approach”, Naval Postgraduate School, Monterey, CA, NTIS

  6. Iran’s Reemergence as a Major Player in Global Security

    DTIC Science & Technology

    2013-05-21

    economic sanctions levied against the Islamic Republic. Iran continues to deny International Atomic Energy Agency inspectors’ access to possible uranium ...build nuclear weapons.”55 Mr. Clapper went on to say that “Iran’s technical advancement, particularly in uranium enrichment, strengthens our assessment...will to do so.”56 During the briefing, he made clear that Iran is technically capable of producing enough highly enriched uranium for a weapon

  7. Surface elevation dynamics in vegetated Spartina marshes versus unvegetated tidal ponds along the mid-Atlantic coast, USA, with implications to waterbirds

    USGS Publications Warehouse

    Erwin, R. Michael; Cahoon, Donald R.; Prosser, Diann J.; Sanders, Geoffrey; Hensel, Philippe

    2006-01-01

    Mid Atlantic coastal salt marshes contain a matrix of vegetation diversified by tidal pools, pannes, and creeks, providing habitats of varying importance to many species of breeding, migrating, and wintering waterbirds. We hypothesized that changes in marsh elevation were not sufficient to keep pace with those of sea level in both vegetated and unvegetated Spartina alterniflora sites at a number of mid lagoon marsh areas along the Atlantic coast. We also predicted that northern areas would suffer less of a deficit than would southern sites. Beginning in August 1998, we installed surface elevation tables at study sites on Cape Cod, Massachusetts, southern New Jersey, and two locations along Virginia's eastern shore. We compared these elevation changes over the 4-4.5 yr record with the long-term (> 50 yr) tidal records for each locale. We also collected data on waterbird use of these sites during all seasons of the year, based on ground surveys and replicated surveys from observation platforms. Three patterns of marsh elevation change were found. At Nauset Marsh, Cape Cod, the Spartina marsh surface tracked the pond surface, both keeping pace with regional sea-level rise rates. In New Jersey, the ponds are becoming deeper while marsh surface elevation remains unchanged from the initial reading. This may result in a submergence of the marsh in the future, assuming sea-level rise continues at current rates. Ponds at both Virginia sites are filling in, while marsh surface elevation rates do not seem to be keeping pace with local sea-level rise. An additional finding at all sites was that subsidence in the vegetated marsh surfaces was less than in unvegetated areas, reflecting the importance of the root mat in stabilizing sediments. The implications to migratory waterbirds are significant. Submergence of much of the lagoonal marsh area in Virginia and New Jersey over the next century could have major negative (i.e., flooding) effects on nesting populations of marsh-dependent seaside sparrows Ammodramus maritimus, saltmarsh sharp-tailed sparrows A. caudacutus, black rails Laterallus jamaicensis, clapper rails Rallus longirostris, Forster's terns Sterna forsteri, common terns Sterna hirundo, and gull-billed terns Sterna nilotica. Although short-term inundation of many lagoonal marshes may benefit some open-water feeding ducks, geese, and swans during winter, the long-term ecosystem effects may be detrimental, as wildlife resources will be lost or displaced. With the reduction in area of emergent marsh, estuarine secondary productivity and biotic diversity will also be reduced.

  8. Cooperative geochemical investigation of geothermal resources in the Imperial Valley and Yuma areas. Final report

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Coplen, T.B.

    1973-10-01

    Preliminary studies indicate that the Imperial Valley has a large geothermal potential. In order to delineate additional geothermal systems a chemical and isotopic investigation of samples from water wells, springs, and geothermal wells in the Imperial Valley and Yuma areas was conducted. Na, K, and Ca concentrations of nearly 200 well water, spring water, hot spring, and geothermal fluid samples from the Imperial Valley area were measured by atomic absorption spectrophotometry. Fournier and Truesdell's function was determined for each water sample. Suspected geothermal areas are identified. Hydrogen and oxygen isotope abundances were determined in order to determine and to identifymore » the source of the water in the Mesa geothermal system. (JGB)« less

  9. High Velocity Jet Noise Source Location and Reduction. Task 2. Theoretical Developments and Basic Experiments.

    DTIC Science & Technology

    1978-05-01

    Measured Flight Effect for J85/ Aerotrain Conical Nozzle, 400 ft Sideline. 360 4-149. Comparison of Predicted and Measured Flight Velocity Exponent m for J85... Aerotrain Conical Nozzle. 362 4-150. Comparison of Measured and Predicted Flight Noise Spectra for J85/ Aerotrain Conical Nozzle, V = 2200 fps, 400 ft...Bertin Aerotrain simulated flight noise results which were obtained by Clapper, et al.( 72) in Task 4 of this program. Fig- ure 4-148 shows the

  10. 40 CFR 52.121 - Classification of regions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Intrastate (Mohave, Yuma) I III III III III Central Arizona Intrastate (Gila, Pinal) I IA III III III Southeast Arizona Intrastate (Cochise, Graham, Greenlee, Santa Cruz) I IA III III III [45 FR 67345, Oct. 10...

  11. 40 CFR 52.121 - Classification of regions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Intrastate (Mohave, Yuma) I III III III III Central Arizona Intrastate (Gila, Pinal) I IA III III III Southeast Arizona Intrastate (Cochise, Graham, Greenlee, Santa Cruz) I IA III III III [45 FR 67345, Oct. 10...

  12. Detail of motor control cabinet and field breakers. Control cabinet ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail of motor control cabinet and field breakers. Control cabinet and breaker panel built by Cutler-Hammer - Wellton-Mohawk Irrigation System, Pumping Plant No. 3, South of Interstate 8, Wellton, Yuma County, AZ

  13. 76 FR 30319 - Real Property Master Plan Programmatic Environmental Impact Statement, at Yuma Proving Ground...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-25

    ..., sensors, and guidance systems and realistic training. The U.S. has been engaged in hostile conflicts in..., water resources, biological resources, cultural resources, socioeconomics, utilities, land use, and...

  14. 78 FR 43901 - Changes in Flood Hazard Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-22

    ...- 3189P). Maricopa County 2801 West 040037-102D.pdf. Board of Durango Street, Supervisors, 301 Phoenix, AZ... Durango Street, Supervisors, 301 Phoenix, AZ West Jefferson, 85009. 10th Floor, Phoenix, AZ 85003. Yuma...

  15. Deferred School Maintenance Creates National Crises.

    ERIC Educational Resources Information Center

    Geiger, Philip E.

    2002-01-01

    Describes the cost and causes of the school maintenance "crises"; lists seven questions to determine if a school district has a quality maintenance program; describes consequences of deferred school maintenance in Yuma (Arizona) Union High School District. (PKP)

  16. South side. Also showing forebay, wing for the main control ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    South side. Also showing forebay, wing for the main control room, and evaporative cooling unit at left - Wellton-Mohawk Irrigation System, Pumping Plant No. 2, Bounded by Interstate 8 to south, Wellton, Yuma County, AZ

  17. WelltonMohawk Irrigation System, Wasteway No. 1, WelltonMohawk Canal, North side ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Wellton-Mohawk Irrigation System, Wasteway No. 1, Wellton-Mohawk Canal, North side of Wellton-Mohawk Canal, bounded by Gila River to North & the Union Pacific Railroad & Gila Mountains to south, Wellton, Yuma County, AZ

  18. 19 CFR 122.24 - Landing requirements for certain aircraft arriving from areas south of U.S.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    .... Houston, Tex William P. Hobby Airport. Key West, Fla Key West International Airport. Laredo, Tex Laredo.... West Palm Beach, Fla Palm Beach International Airport. Wilmington, NC New Hanover County Airport Yuma...

  19. 19 CFR 122.24 - Landing requirements for certain aircraft arriving from areas south of U.S.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    .... Houston, Tex William P. Hobby Airport. Key West, Fla Key West International Airport. Laredo, Tex Laredo.... West Palm Beach, Fla Palm Beach International Airport. Wilmington, NC New Hanover County Airport Yuma...

  20. 19 CFR 122.24 - Landing requirements for certain aircraft arriving from areas south of U.S.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    .... Houston, Tex William P. Hobby Airport. Key West, Fla Key West International Airport. Laredo, Tex Laredo.... West Palm Beach, Fla Palm Beach International Airport. Wilmington, NC New Hanover County Airport Yuma...

  1. 19 CFR 122.24 - Landing requirements for certain aircraft arriving from areas south of U.S.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    .... Houston, Tex William P. Hobby Airport. Key West, Fla Key West International Airport. Laredo, Tex Laredo.... West Palm Beach, Fla Palm Beach International Airport. Wilmington, NC New Hanover County Airport Yuma...

  2. MODELING OF MACROSCALE AGRICULTURAL ELEMENTS IN PESTICIDE EXPOSURE

    EPA Science Inventory

    Yuma County, Arizona, is the site of year around agriculture. To understand the role of agricultural pesticide exposures experienced by children, urinary metabolite concentrations were compared with agricultural use of pesticides. The urinary metabolite and household data wer...

  3. Space Radar Image of Pinacate Volcanic Field, Mexico

    NASA Image and Video Library

    1999-04-15

    This spaceborne radar image shows the Pinacate Volcanic Field in the state of Sonora, Mexico, about 150 kilometers 93 miles southeast of Yuma, Arizona. The United States/Mexico border runs across the upper right corner of the image.

  4. Indians of Arizona.

    ERIC Educational Resources Information Center

    Bureau of Indian Affairs (Dept. of Interior), Washington, DC.

    Briefly describing each tribe within Arizona's four major American Indian groups, this handbook presents information relative to the cultural background and socioeconomic development of the following tribes: (1) Athapascan Tribes (Navajos and Apaches); (2) Pueblo Indians (Hopis); (3) Desert Rancheria Tribes (Pimas, Yumas, Papagos, Maricopas,…

  5. South front and west side, oblique view to the northeast. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    South front and west side, oblique view to the northeast. A recent addition is visible at the far left behind the original building - Wellton-Mohawk Irrigation System, Building No. 13 (House), 30682 Wellton-Mohawk Drive, Wellton, Yuma County, AZ

  6. Detail of field breakers in the motor control cabinet for ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail of field breakers in the motor control cabinet for unit 3. Control cabinet and breaker panel built by Cutler-Hammer - Wellton-Mohawk Irrigation System, Pumping Plant No. 1, Bounded by Gila River & Union Pacific Railroad, Wellton, Yuma County, AZ

  7. 77 FR 54907 - Combined Notice of Filings #2

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-06

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Combined Notice of Filings 2 Take notice that the Commission received the following electric rate filings: Docket Numbers: ER10-2601-001; ER10-2605-003. Applicants: Power Resources, Ltd., Yuma Cogeneration Associates. Description: Notification of...

  8. 75 FR 8321 - North Baja Pipeline, LLC; Notice of Abbreviated Application of North Baja Pipeline LLC; To Amend...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-24

    ... Convenience and Necessity February 18, 2010. Take notice that on February 4, 2010, North Baja Pipeline, LLC... certificate of public convenience and necessity authorizing the construction and operation of the Yuma Lateral...

  9. 78 FR 50049 - Draft Programmatic Environmental Impact Statement for Activities and Operations at Yuma Proving...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-16

    ... and training mission. YPG consists of approximately 840,000 acres of DoD-managed land in the Sonoran Desert in southwestern Arizona. DATES: The public comment period will end 45 days after publication of an...

  10. Late Neogene deformation of the Chocolate Mountains Anticlinorium: Implications for deposition of the Bouse Formation and early evolution of the Lower Colorado River

    USGS Publications Warehouse

    Beard, Sue; Haxel, Gordon B.; Dorsey, Rebecca J.; McDougall, Kristin A.; Jacobsen, Carl E.

    2016-01-01

    Deformation related to late Neogene dextral shear can explain a shift from an estuarine to lacustrine depositional environment in the southern Bouse Formation north of Yuma, Arizona. We infer that late Neogene deformation in the Chocolate Mountain Anticlinorium (CMA) created a barrier that blocked an estuary inlet, and that pre-existing and possibly active structures subsequently controlled the local course of the lower Colorado River. Structural patterns summarized below suggest that the CMA absorbed transpressional strain caused by left-stepping segments of dextral faults of the San Andreas fault system and/or the eastern California shear zone and Gulf of California shear zone. For this hypothesis to be correct, about 200-250 m of post-6 Ma, pre- ~5.3 Ma uplift along the CMA crest would be required to cut off a marine inlet. The 220-km-long CMA, cored by the early Paleogene Orocopia Schist subduction complex, extends from the Orocopia Mountains (Calif.) southeastward through the Chocolate Mountains (parallel to the southern San Andreas fault). Where Highway 78 crosses the Chocolate Mountains (Fig. 1), the CMA turns eastward through the Black Mountain-Picacho area (Calif.) and Trigo Mountains (Ariz.) into southwest Arizona. It separates southernmost Bouse Formation outcrops of the Blythe basin from subsurface Bouse outcrops to the south in the Yuma area. South of Blythe basin the CMA is transected by the lower Colorado River along a circuitous path. Here we focus on the geology of an area between the central Chocolate Mountains and the Yuma Proving Grounds in Arizona. Specific landmarks include the southeast Chocolate Mountains, Midway Mountains, Peter Kane Mountain, Black Mountain, Picacho Peak, and Gavilan Hills. For simplicity, we refer to this as the eastern Chocolate Mountains.

  11. Overview of Pump Room, showing pumps at right and power ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Overview of Pump Room, showing pumps at right and power distribution cabinets for valve motors along north wall at left. View to east - Wellton-Mohawk Irrigation System, Pumping Plant No. 1, Bounded by Gila River & Union Pacific Railroad, Wellton, Yuma County, AZ

  12. Detail, unit 4, 3,000 hp synchronous pump motor. Manufactured by ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail, unit 4, 3,000 hp synchronous pump motor. Manufactured by The Electric Products Company, Cleveland, Ohio. Unit 5 is identical to this unit - Wellton-Mohawk Irrigation System, Pumping Plant No. 2, Bounded by Interstate 8 to south, Wellton, Yuma County, AZ

  13. Detail, Unit 4, Worthington MixFlo Pump, Harrison, New Jersey, USA. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail, Unit 4, Worthington Mix-Flo Pump, Harrison, New Jersey, USA. All six pump units are of the same size, make, and model - Wellton-Mohawk Irrigation System, Pumping Plant No. 1, Bounded by Gila River & Union Pacific Railroad, Wellton, Yuma County, AZ

  14. Service bay area, pump room level, showing ventilation fans and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Service bay area, pump room level, showing ventilation fans and ducts association with evaporative-cooling system. Note battery bank at far right. View to the east - Wellton-Mohawk Irrigation System, Pumping Plant No. 3, South of Interstate 8, Wellton, Yuma County, AZ

  15. Analysis of beryllium and depleted uranium: An overview of detection methods in aerosols and soils

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Camins, I.; Shinn, J.H.

    We conducted a survey of commercially available methods for analysis of beryllium and depleted uranium in aerosols and soils to find a reliable, cost-effective, and sufficiently precise method for researchers involved in environmental testing at the Yuma Proving Ground, Yuma, Arizona. Criteria used for evaluation include cost, method of analysis, specificity, sensitivity, reproducibility, applicability, and commercial availability. We found that atomic absorption spectrometry with graphite furnace meets these criteria for testing samples for beryllium. We found that this method can also be used to test samples for depleted uranium. However, atomic absorption with graphite furnace is not as sensitive amore » measurement method for depleted uranium as it is for beryllium, so we recommend that quality control of depleted uranium analysis be maintained by testing 10 of every 1000 samples by neutron activation analysis. We also evaluated 45 companies and institutions that provide analyses of beryllium and depleted uranium. 5 refs., 1 tab.« less

  16. Main Control Room, view to the east. The door to ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Main Control Room, view to the east. The door to the motor room is to the right, and the main control cabinets are to the left - Wellton-Mohawk Irrigation System, Pumping Plant No. 1, Bounded by Gila River & Union Pacific Railroad, Wellton, Yuma County, AZ

  17. Susceptibility of Bagrada hilaris (Hemiptera: Pentatomidae) to insecticides in laboratory and greenhouse bioassays

    USDA-ARS?s Scientific Manuscript database

    Field-collected populations of Bagrada hilaris (Burmeister) from Coachella Valley, CA, Imperial Valley, CA, Riverside, CA and Yuma Valley, AZ, were evaluated for susceptibility to several active ingredients representing ten classes of insecticide chemistry. Both leaf-spray and leaf-dip bioassays wer...

  18. Enterprising Approach

    ERIC Educational Resources Information Center

    Robelen, Erik W.

    2006-01-01

    A master's-degree program blends courses in education and business to prepare leaders for the entrepreneurial world of charter schooling. Verree D. Laughlin wants to launch a network of small, community-oriented charter schools, starting with one near the Mexican border in Yuma, Arizona. Katheryn Crayton-Shay recently took the reins of a…

  19. Multiple pole electromagnetic propulsion system with separated ballistic guidance and electrical current contact surfaces

    DOEpatents

    Sims, Jr., James R.

    2008-07-15

    An electromagnetic propulsion system is disclosed having separate rails for ballistic guidance and for carrying current. In this system, one or more pairs of ballistic guidance rails are provided, with each ballistic guidance rail having a pair of current carrying rails joined to it to form a combined rail. Each combined rail is separated electrically from adjacent combined rails by electrically insulating blocks. Each of the current carrying rails in a given combined rail pair have the same electrical polarity, and the polarities alternate between adjacent combined rails. Armatures contact current carrying rails to complete the circuit to generate the accelerating Lorentz force on the armatures. Bore riders on the sabot and/or projectile are in contact with the ballistic guide rails. Separation of the current carrying and ballistic guidance functions increases resistance of the system to rail movement and bending, as well as reduced wear/damage to the rails. In further embodiments, a circumferential over wrap providing compressive force on the rails further increases resistance of the system to rail movement and bending.

  20. 77 FR 17121 - RailAmerica, Inc., Palm Beach Rail Holding, Inc., RailAmerica Transportation Corp., RailTex, Inc...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-23

    ... Group, LLC, and RR Acquisition Holding, LLC--Control Exemption--Wellsboro & Corning Railroad, LLC Rail.... (RTC), RailTex, Inc. (RailTex), Fortress Investment Group, LLC (Fortress), and RR Acquisition Holding... acquire indirect control of the Wellsboro & Corning Railroad, LLC (W&C), a Class III rail carrier, through...

  1. 76 FR 58293 - Rate Adjustments for Indian Irrigation Projects

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-20

    ... 1st Avenue, Parker, AZ 85344, Telephone: (928) 669-7111. Duck Valley Irrigation Project.... Joseph...-feet. Duck Valley Irrigation Project. Basic per acre.... 5.30 5.30 Fort Yuma Irrigation Project Basic...)). Information Quality Act In developing this notice, we did not conduct or use a study, experiment, or survey...

  2. VULNERABILITY OF YOUNG CHILDREN TO ORGANOPHOSPHATE PESTICIDES AND SELECTED METALS THROUGH INTERMITTENT EXPOSURES IN YUMA COUNTY, ARIZONA

    EPA Science Inventory

    Children are the most susceptible population to environmental contaminants since: (a) their organs and neurological system are rapidly developing; (b) their intake (air, water, food, beverage) is greater relative to body size and weight; (c) their activities, behavior and p...

  3. Standardized UXO Technology Demonstration Site Blind Grid Record No. 904 (Sky Research, Inc.). EM61 MKII/Towed Array

    DTIC Science & Technology

    2008-09-01

    DEMONSTRATOR’S FIELD PERSONNEL Geophysicist: Craig Hyslop Geophysicist: John Jacobsen Geophysicist: Rob Mehl 3.7 DEMONSTRATOR’S FIELD SURVEYING...Yuma Proving Ground Soil Survey Report, May 2003. 5. Practical Nonparametric Statistics, W.J. Conover, John Wiley & Sons, 1980 , pages 144 through

  4. 77 FR 26576 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-04

    ... Bluffs Hwy. & Langley Ave., Pensacola, 12000299 Monroe County Veterans of Foreign Wars Walter R. Mickens...., Manhattan, 12000301 Second Baptist Church, (African American Resources in Manhattan, Kansas MPS) 831 Yuma St., Manhattan, 12000302 Sedgwick County Wichita Veterans Administration Hospital, (United States Second...

  5. 19 CFR 122.24 - Landing requirements for certain aircraft arriving from areas south of U.S.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ..., Fla Opa-Locka Airport. Miami, Fla Tamiami Airport. Midland, TX Midland International Airport. New Orleans, La New Orleans International Airport (Moissant Field). New Orleans, La New Orleans Lakefront.... West Palm Beach, Fla Palm Beach International Airport. Wilmington, NC New Hanover County Airport Yuma...

  6. Detail, unit 3, 1,100 horsepower (hp) pump motor. Manufactured by ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail, unit 3, 1,100 horsepower (hp) pump motor. Manufactured by the Electric Products Company, Cleveland, Ohio, USA. Units 1,2, and 4 are identical to this unit - Wellton-Mohawk Irrigation System, Pumping Plant No. 1, Bounded by Gila River & Union Pacific Railroad, Wellton, Yuma County, AZ

  7. CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing) Highlights.

    DTIC Science & Technology

    1984-10-01

    ATTN: AMCRE-C/Ms. Jean Lamb C dr, ATTN: ANCRM-P/Mr. Jerry Gibson Cdr, ATTN: AMCQA-E/Mr. Billings Cdr, ATTN: AMXAM-TL/Technical Library US Army...Sands Missile Range, ATTN: STEWS -TE-TL/Technical Library Cdr, US Military Academy, ATTN: LTC Lanse Leach - - . Cdr, Yuma Proving Grounds, ATTN

  8. 77 FR 52681 - Reorganization and Expansion of Foreign-Trade Zone 219 Under Alternative Site Framework Yuma, AZ

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-30

    ... 219's existing Sites 1 and 2 and new Site 4 would be categorized as magnet sites, Site 3 would be... provision for magnet sites that would terminate authority for Site 2 and Site 4 if not activated by August...

  9. 77 FR 74652 - Combined Notice of Filings #1

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-17

    ...-1521-001; ER12-1522-001; ER12- 1626-001; ER10-2605-004. Applicants: Agua Caliente Solar, LLC, Alta Wind VII, LLC, Alta Wind IX, LLC, Topaz Solar Farms LLC, Yuma Cogeneration Associates. Description...: Midwest Independent Transmission System Operator, Inc. Description: SA 2431 Glacial Ridge Wind-GRE...

  10. SAR studies in the Yuma Desert, Arizona: Sand penetration, geology, and the detection of military ordnance debris

    USGS Publications Warehouse

    Schaber, G.G.

    1999-01-01

    Synthetic Aperture Radar (SAR) images acquired over part of the Yuma Desert in southwestern Arizona demonstrate the ability of C-band (5.7-cm wavelength), L-band (24.5 cm), and P-band (68 cm) AIRSAR signals to backscatter from increasingly greater depths reaching several meters in blow sand and sandy alluvium. AIRSAR images obtained within the Barry M. Goldwater Bombing and Gunnery Range near Yuma, Arizona, show a total reversal of C- and P-band backscatter contrast (image tone) for three distinct geologic units. This phenomenon results from an increasingly greater depth of radar imaging with increasing radar wavelength. In the case of sandy- and small pebble-alluvium surfaces mantled by up to several meters of blow sand, backscatter increases directly with SAR wavelength as a result of volume scattering from a calcic soil horizon at shallow depth and by volume scattering from the root mounds of healthy desert vegetation that locally stabilize blow sand. AIRSAR images obtained within the military range are also shown to be useful for detecting metallic military ordnance debris that is located either at the surface or covered by tens of centimeters to several meters of blow sand. The degree of detectability of this ordnance increases with SAR wavelength and is clearly maximized on P-band images that are processed in the cross-polarized mode (HV). This effect is attributed to maximum signal penetration at P-band and the enhanced PHV image contrast between the radar-bright ordnance debris and the radar-dark sandy desert. This article focuses on the interpretation of high resolution AIRSAR images but also Compares these airborne SAR images with those acquired from spacecraft sensors such as ERS-SAR and Space Radar Laboratory (SIR-C/X-SAR).Synthetic Aperture Radar (SAR) images acquired over part of the Yuma Desert in southwestern Arizona demonstrate the ability of C-band (5.7-cm wavelength), L-band (24.5 cm), and P-band (68 cm) AIRSAR signals to backscatter from increasingly greater depths reaching several meters in blow sand and sandy alluvium. AIRSAR images obtained within the Barry M. Goldwater Bombing and Gunnery Range near Yuma, Arizona, show a total reversal of C- and P-band backscatter contrast (image tone) for three distinct geologic units. This phenomenon results from an increasingly greater depth of radar imaging with increasing radar wavelength. In the case of sandy- and small pebble-alluvium surfaces mantled by up to several meters of blow sand, backscatter increases directly with SAR wavelength as a result of volume scattering from a calcic soil horizon at shallow depth and by volume scattering from the root mounds of healthy desert vegetation that locally stabilize blow sand. AIRSAR images obtained within the military range are also shown to be useful for detecting metallic military ordnance debris that is located either at the surface or covered by tens of centimeters to several meters of blow sand. The degree of detectability of this ordnance increases with SAR wavelength and is clearly maximized on P-band images that are processed in the cross-polarized mode (HV). This effect is attributed to maximum signal penetration at P-band and the enhanced PHV image contrast between the radar-bright ordnance debris and the radar-dark sandy desert. This article focuses on the interpretation of high resolution AIRSAR images but also compares these airborne SAR images with those acquired from spacecraft sensors such as ERS-SAR and Space Radar Laboratory (SIR-C/X-SAR).

  11. Impact of the rail-pad multi-discrete model upon the prediction of the rail response

    NASA Astrophysics Data System (ADS)

    Mazilu, T.; Leu, M.

    2017-08-01

    Wheel/rail vibration has many technical effects such as wear of the rolling surfaces, rolling noise, settlement of the ballast and subgrade etc. This vibration is depending on the rail pad characteristic and subsequently, it is important to have an accurate overview on the relation between the rail pad characteristic and the level of the wheel/rail vibration. To this end, much theoretical and experimental research has been developed in the past, and for the theoretical approach the track model, in general, and, particularly, the rail pad model is of crucial importance. Usually, the rail pad model is discrete model one, neglecting the length of the rail pad. This fact is questionable because the sleepers span is only 4 times the rail pad length. Using the rail pad discrete model, the rail response is overestimated when the frequency of the excitation equals the pinned-pinned resonance frequency. In this paper, a multi-discrete model for the rail pad, consisting in many Kelvin-Voigt parallel systems, is inserted into an analytical model of the track. The track model is reduced to a rail taken as infinite Timoshenko beam, discretely supported via rail pad, sleeper and ballast. The influence of the number of Kelvin-Voigt systems of the rail pad model on the rail response is analysed.

  12. Structure and Properties of Thermite Welds in Premium Rails

    DOT National Transportation Integrated Search

    1985-12-01

    Thermite welds were used to join combinations of premium rails and AREA Controlled Cooled Carbon rails (i.e., standard rails). The premium rails comprised head-hardened rails and CrMo, CrV and Cr alloy rails. A major objective was to determine the fe...

  13. 76 FR 55335 - Alternate Passenger Rail Service Pilot Program

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-07

    ... proceeding to develop a pilot program that permits a rail carrier or rail carriers that own infrastructure... develop a pilot program that permits a rail carrier or rail carriers that own infrastructure over which... that permits a rail carrier or rail carriers that own infrastructure over which Amtrak operates a...

  14. 77 FR 12107 - RailAmerica, Inc., Palm Beach Holding, Inc., RailAmerica Transportation Corp., RailTex, Inc...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-28

    ...., Palm Beach Holding, Inc., RailAmerica Transportation Corp., RailTex, Inc., Fortress Investment Group, LLC, and RR Acquisition Holding, LLC--Control Exemption--Marquette Rail, LLC AGENCY: Surface...), RailTex, Inc., Fortress Investment Group, LLC (Fortress), and RR Acquisition Holding, LLC (RR...

  15. 75 FR 76520 - Tennessee Southern Railroad Company, Patriot Rail, LLC, Patriot Rail Holdings LLC, and Patriot...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-08

    ... family by converting two of its subsidiaries from corporations into limited liability companies: (1... Railroad Company, Patriot Rail, LLC, Patriot Rail Holdings LLC, and Patriot Rail Corp.--Corporate Family... Railroad Company (TSRR), Patriot Rail, LLC (PRL) and its subsidiaries, Patriot Rail Holdings LLC (PRH) and...

  16. Fast rail corrugation detection based on texture filtering

    NASA Astrophysics Data System (ADS)

    Xiao, Jie; Lu, Kaixia

    2018-02-01

    The condition detection of rails in high-speed railway is one of the important means to ensure the safety of railway transportation. In order to replace the traditional manual inspection, save manpower and material resources, and improve the detection speed and accuracy, it is of great significance to develop a machine vision system for locating and identifying defects on rails automatically. Rail defects exhibit different properties and are divided into various categories related to the type and position of flaws on the rail. Several kinds of interrelated factors cause rail defects such as type of rail, construction conditions, and speed and/or frequency of trains using the rail. Rail corrugation is a particular kind of defects that produce an undulatory deformation on the rail heads. In high speed train, the corrugation induces harmful vibrations on wheels and its components and reduces the lifetime of rails. This type of defects should be detected to avoid rail fractures. In this paper, a novel method for fast rail corrugation detection based on texture filtering was proposed.

  17. Securing America’s Passenger-Rail Systems

    DTIC Science & Technology

    2007-01-01

    around the world highlight the vulnerability of rail travel and the importance of rail security for these passengers. The use of passenger rail and...take to U.S. railways. Recent attacks on passenger-rail systems around the world highlight the vulnerability of rail travel and the importance of rail...rails (Boardman, 2005), making more than 3.5 billion trips (APTA, 2006).1 And these estimates do not count the passengers traveling on the National

  18. Green's functions for analysis of dynamic response of wheel/rail to vertical excitation

    NASA Astrophysics Data System (ADS)

    Mazilu, Traian

    2007-09-01

    An analytical model to simulate wheel/rail interaction using the Green's functions method is proposed in this paper. The model consists of a moving wheel on a discretely supported rail. Particularly for this model of rail, the bending and the longitudinal displacement are coupled due to the rail pad and a complex model of the rail pad is adopted. An efficient method for solving a time-domain analysis for wheel/rail interaction is presented. The method is based on the properties of the rail's Green functions and starting to these functions, a track's Green matrix is assembled for the numerical simulations of wheel/rail response due to three kinds of vertical excitations: the steady-state interaction, the rail corrugation and the wheel flat. The study points to influence of the worn rail—rigid contact—on variation in the wheel/rail contact force. The concept of pinned-pinned inhibitive rail pad is also presented.

  19. Recommendations for the Development of a Dust Suppressant Test Operations Procedure (TOP) Performed at the U.S. Army Yuma Proving Ground

    DTIC Science & Technology

    2010-02-08

    variety of bedrock types including: igneous ( basalt , granite, and rhyolite), metamorphic (schist and gneiss), and sedimentary rocks of Quaternary...TerraLOC® Standard formulation was applied. Chemical dust suppressant formulations vary widely, to include salts, oils, fiber mixtures and synthetic

  20. Main control room, showing original sixpane windows and doors to ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Main control room, showing original six-pane windows and doors to pump motor room at left. The main control cabinets and switchgear, visible on right, were replaced in 2003. View to the south - Wellton-Mohawk Irrigation System, Pumping Plant No. 2, Bounded by Interstate 8 to south, Wellton, Yuma County, AZ

  1. Looking north at the 125 horsepower pumps, their discharge pipes, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Looking north at the 125 horsepower pumps, their discharge pipes, a metal grate for catching debris, and the pump start station control cabinets - Wellton-Mohawk Irrigation System, Relift Station, Texas Hill Canal 2.5, Northern Terminus of Avenue 51 East, approximately .5 mile south of Union Pacific Railroad, Wellton, Yuma County, AZ

  2. Motor Room, overall view to the west. The control cabinet ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Motor Room, overall view to the west. The control cabinet and cement pipes along the south wall are being temporarily stored in the Pumping Plant and are not part of the original equipment - Wellton-Mohawk Irrigation System, Pumping Plant No. 1, Bounded by Gila River & Union Pacific Railroad, Wellton, Yuma County, AZ

  3. 76 FR 41250 - Formetanate HCl and Acephate; Notice of Receipt of Requests to Voluntarily Amend Registrations To...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-13

    ... EPA of requests from several registrants including Amvac Chemical Corporation, United Phosphorus, Inc... dated April 20, 2011 (Makhteshim Agan of North America, Inc.), May 10, 2011 (United Phosphorus, Inc... 92660. 10163 Gowan Company, P.O. Box 5569, Yuma, AZ 85366-5569. 70506 United Phosphorus, Inc., 630...

  4. 77 FR 76477 - Notice of Availability of the Final Environmental Impact Statement for the Quartzsite Solar...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-28

    ... traditional steam turbine generators. The Project would contain the central receiver or tower, a solar field... the Final Environmental Impact Statement for the Quartzsite Solar Energy Project and the Yuma Field...: Notice of Availability. SUMMARY: Quartzsite Solar Energy (QSE) has requested to interconnect the...

  5. Looking southwest in the service bay area, pump room level, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Looking southwest in the service bay area, pump room level, at the ventilation fan ducts associated with the evaporative cooling system. Stairs to the operating deck above the intakes are at the far left - Wellton-Mohawk Irrigation System, Pumping Plant No. 2, Bounded by Interstate 8 to south, Wellton, Yuma County, AZ

  6. Adventures in Teaching via Interactive Television.

    ERIC Educational Resources Information Center

    Lund, Steven; Sanderson, Lee

    Since 1991, Arizona Western College has provided interactive television (ITV) college courses to other sites within and outside of Yuma County (Arizona). This method of course delivery reaches students at distant sites not large enough to support a class and also allows teachers at several sites to offer courses to a larger student pool. It makes…

  7. 76 FR 65715 - Combined Notice of Filings #2

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-24

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Combined Notice of Filings 2 Take notice that the Commission received the following electric rate filings: Docket Numbers: ER10-3246-001; ER11-2044-003; ER11-3876-002; ER10- 2605-001. Applicants: MidAmerican Energy Company, Cordova Energy Company, LLC, PacifiCorp, Yuma Cogeneration...

  8. Detail, unit 4, 1,850 horsepower (hp) synchronous pump motor manufactured ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail, unit 4, 1,850 horsepower (hp) synchronous pump motor manufactured by The Electric Products Company, Cleveland , Ohio. Pump units 1, 2, and 3 are identical to this unit. View to the west - Wellton-Mohawk Irrigation System, Pumping Plant No. 3, South of Interstate 8, Wellton, Yuma County, AZ

  9. 78 FR 55737 - Notice of Service Delivery Area Designation for the Tejon Indian Tribe

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-11

    .... Liberty, MT. Chitimacha Tribe of Louisiana St. Mary Parish, LA. Cocopah Tribe of Arizona Yuma, AZ..., Washington. Thurston, WA. Confederated Tribes of the Colville Chelan, WA,\\8\\ Douglas, WA, Reservation... Coos, OR,\\9\\ Curry, OR, Umpqua & Siuslaw Indians of Oregon. Douglas, OR, Lane, OR, Lincoln, OR...

  10. Complete genome sequences of two atypical enteropathogenic Escherichia coli O145 environmental strains

    USDA-ARS?s Scientific Manuscript database

    Escherichia coli O145 strains RM14715 and RM14723 were isolated from wildlife feces near a leafy greens-growing region in Yuma, Arizona. Both strains carry a distinct genotype compared with the E. coli O145 strains isolated from Salinas Valley, California. Here we report complete genome sequences an...

  11. Generation and Propagation of Microseismic Signals from Footsteps

    DTIC Science & Technology

    1973-09-01

    7.75/MF $3.00 Retrofitting a Residence for Solar HeatingPB-247 823/ PAT 138 p. PC$6.00/MF $3.00 and Cooling: The Design and Construction Investigation...logarithm This equation was developed using selected field data collected in Panal and West Germany, and at Fort Huachuca and Yuma, Ariz., and

  12. Mapping Typha Domingensis in the Cienega de Santa Clara Using Satellite Images, Global Positioning System, and Spectrometry

    USGS Publications Warehouse

    Sanchez, Richard D.; Burnett, Earl E.; Croxen, Fred

    2000-01-01

    The Cienega de Santa Clara, Sonora, Mexico, a brackish wetland area created near the delta of the Colorado River from drainage effluent flowing from the United States since 1977, may undergo changes owing to the operation of the Yuma Desalting Plant in the United States. This has become the largest wetland in the delta region containing rare and endangered species, yet little is known about the environmental impact of these changes. The water quality of the marsh is of growing concern to the Bureau of Reclamation (BOR) which operates the Desalting Plant. Consequently, the BOR solicited the U.S. Geological Survey to investigate the limits and usefulness of satellite, global positioning system (GPS), and spectra data to map the Typha domingensis (cattail) of the Cienega de Santa Clara. Typha domingensis was selected by the BOR as the Cienega de Santa Clara indicator species to best predict the environmental effects of effl uent from the Yuma Desalting Plant. The successful base mapping of Typha domingensis will provide a viable tool for long-term monitoring and stress detection in the Cienega de Santa Clara.

  13. Reconnaissance samplings and characterization of aquatic humic substances at the Yuma Desalting Test Facility, Arizona

    USGS Publications Warehouse

    Malcolm, R.L.; Wershaw, R. L.; Thurman, E.M.; Aiken, G.R.; Pinckney, D.J.; Kaakinen, J.

    1981-01-01

    Smectite clay minerals were found to be the principal compound on the surface of the cellulose-acetate, reverse-osmosis membranes at the Yuma Desalting Test Facility. These clay minerals were not present in the pumped ground water, but were blown into the conveyance canal from adjacent soils. Humic substances from the water and suspended sediments were associated with the clay films on the membrane, but no definitive results concerning their role in fouling were achieved. Microbial fouling is believed to be only a minor aspect of membrane fouling. Chemical and physical changes in humic substances were extensively studied at four points in the water-treatment process. Humic substances accounted for the largest component (over 25 percent) of organic constituents. Humic substances in the canal source water were similar to other aquatic humic substances present in natural waters. During the treatment process, these substances are brominated and decolorized. The effect of these halogenated humic substances on membrane fouling is unclear, but their presence in the reverse-osmosis product water and reverse-osmosis reject brine, along with volatile trihalomethanes, has led to environmental concerns. (USGS)

  14. Investigation on CWR longitudinal restraint behavior in winter rail break and summer destressing operations.

    DOT National Transportation Integrated Search

    1997-08-01

    This report presents the results of investigations on the rail anchor/fastener effects on rail movement and the resulting rail force distribution in continuous welded rail (CWR) track during rail breaks and destressing operations. Two types of tests ...

  15. 78 FR 65244 - Rail Vehicles Access Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-31

    ...-0001] RIN 3014-AA42 Rail Vehicles Access Advisory Committee AGENCY: Architectural and Transportation Barriers Compliance Board. ACTION: Notice of advisory committee meeting. SUMMARY: The Rail Vehicles Access... vehicles that operate on fixed guideway systems (e.g., rapid rail, light rail, commuter rail, intercity...

  16. 49 CFR 210.9 - Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars. 210.9 Section 210.9 Transportation Other Regulations... locomotive, rail car, or consist of a locomotive and rail cars. A locomotive, rail car, or consist of a...

  17. 49 CFR 210.9 - Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars. 210.9 Section 210.9 Transportation Other Regulations... locomotive, rail car, or consist of a locomotive and rail cars. A locomotive, rail car, or consist of a...

  18. 49 CFR 210.9 - Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars. 210.9 Section 210.9 Transportation Other Regulations... locomotive, rail car, or consist of a locomotive and rail cars. A locomotive, rail car, or consist of a...

  19. 49 CFR 210.9 - Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars. 210.9 Section 210.9 Transportation Other Regulations... locomotive, rail car, or consist of a locomotive and rail cars. A locomotive, rail car, or consist of a...

  20. 49 CFR 210.9 - Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Movement of a noise defective locomotive, rail car, or consist of a locomotive and rail cars. 210.9 Section 210.9 Transportation Other Regulations... locomotive, rail car, or consist of a locomotive and rail cars. A locomotive, rail car, or consist of a...

  1. Real-time and accurate rail wear measurement method and experimental analysis.

    PubMed

    Liu, Zhen; Li, Fengjiao; Huang, Bangkui; Zhang, Guangjun

    2014-08-01

    When a train is running on uneven or curved rails, it generates violent vibrations on the rails. As a result, the light plane of the single-line structured light vision sensor is not vertical, causing errors in rail wear measurements (referred to as vibration errors in this paper). To avoid vibration errors, a novel rail wear measurement method is introduced in this paper, which involves three main steps. First, a multi-line structured light vision sensor (which has at least two linear laser projectors) projects a stripe-shaped light onto the inside of the rail. Second, the central points of the light stripes in the image are extracted quickly, and the three-dimensional profile of the rail is obtained based on the mathematical model of the structured light vision sensor. Then, the obtained rail profile is transformed from the measurement coordinate frame (MCF) to the standard rail coordinate frame (RCF) by taking the three-dimensional profile of the measured rail waist as the datum. Finally, rail wear constraint points are adopted to simplify the location of the rail wear points, and the profile composed of the rail wear points are compared with the standard rail profile in RCF to determine the rail wear. Both real data experiments and simulation experiments show that the vibration errors can be eliminated when the proposed method is used.

  2. Demonstration of the Military Ecological Risk Assessment Framework (MERAF): Apache Longbow - Hell Missile Test at Yuma Proving Ground

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Efroymson, R.A.

    2002-05-09

    This ecological risk assessment for a testing program at Yuma Proving Ground, Arizona, is a demonstration of the Military Ecological Risk Assessment Framework (MERAF; Suter et al. 2001). The demonstration is intended to illustrate how risk assessment guidance concerning-generic military training and testing activities and guidance concerning a specific type of activity (e.g., low-altitude aircraft overflights) may be implemented at a military installation. MERAF was developed with funding from the Strategic Research and Development Program (SERDP) of the Department of Defense. Novel aspects of MERAF include: (1) the assessment of risks from physical stressors using an ecological risk assessment framework,more » (2) the consideration of contingent or indirect effects of stressors (e.g., population-level effects that are derived from habitat or hydrological changes), (3) the integration of risks associated with different component activities or stressors, (4) the emphasis on quantitative risk estimates and estimates of uncertainty, and (5) the modularity of design, permitting components of the framework to be used in various military risk assessments that include similar activities. The particular subject of this report is the assessment of ecological risks associated with a testing program at Cibola Range of Yuma Proving Ground, Arizona. The program involves an Apache Longbow helicopter firing Hellfire missiles at moving targets, i.e., M60-A1 tanks. Thus, the three component activities of the Apache-Hellfire test were: (1) helicopter overflight, (2) missile firing, and (3) tracked vehicle movement. The demonstration was limited, to two ecological endpoint entities (i.e., potentially susceptible and valued populations or communities): woody desert wash communities and mule deer populations. The core assessment area is composed of about 126 km{sup 2} between the Chocolate and Middle Mountains. The core time of the program is a three-week period, including fourteen days of activity in August of 2000.« less

  3. Evidence of episodic long-lived eruptions in the Yuma, Ginsburg, Jesús Baraza and Tasyo mud volcanoes, Gulf of Cádiz

    NASA Astrophysics Data System (ADS)

    Toyos, María H.; Medialdea, Teresa; León, Ricardo; Somoza, Luis; González, Francisco Javier; Meléndez, Nieves

    2016-06-01

    High-resolution single channel and multichannel seismic reflection profiles and multibeam bathymetric and backscatter data collected during several cruises over the period 1999 to 2007 have enabled characterising not only the seabed morphology but also the subsurface structural elements of the Yuma, Ginsburg, Jesús Baraza and Tasyo mud volcanoes (MVs) in the Gulf of Cádiz at 1,050-1,250 m water depth. These MVs vary strongly in morphology and size. The data reveal elongated cone-shaped edifices, rimmed depressions, and scarps interpreted as flank failures developed by collapse, faulting, compaction and gravitational processes. MV architecture is characterised by both extrusive and intrusive complexes, comprising stacked edifices (including seabed cones and up to four buried bicones) underlain by chaotic vertical zones and downward-tapering cones suggesting feeder systems. These intrusive structures represent the upper layer of the feeder system linking the fluid mud sources with the constructional edifices. The overall architecture is interpreted to be the result of successive events of mud extrusion and outbuilding alternating with periods of dormancy. Each mud extrusion phase is connected with the development of an edifice, represented by a seabed cone or a buried bicone. In all four MVs, the stacked edifices and the intrusive complexes penetrate Late Miocene-Quaternary units and are rooted in the Gulf of Cádiz wedge emplaced during the late Tortonian. Major phases of mud extrusion and outbuilding took place since the Late Pliocene, even though in the Yuma and Jesús Baraza MVs mud volcanism started in the Late Miocene shortly after the emplacement of the Gulf of Cádiz wedge. This study shows that fluid venting in the eastern sector of the Gulf of Cádiz promoted the outbuilding of large long-lived mud volcanoes active since the Late Miocene, and which have been reactivated repeatedly until recent times.

  4. Yuma proving grounds automatic UXO detection using biomorphic robots

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Tilden, M.W.

    1996-07-01

    The current variety and dispersion of Unexploded Ordnance (UXO) is a daunting technological problem for current sensory and extraction techniques. The bottom line is that the only way to insure a live UXO has been found and removed is to step on it. As this is an upsetting proposition for biological organisms like animals, farmers, or Yuma field personnel, this paper details a non-biological approach to developing inexpensive, automatic machines that will find, tag, and may eventually remove UXO from a variety of terrains by several proposed methods. The Yuma proving grounds (Arizona) has been pelted with bombs, mines, missiles,more » and shells since the 1940s. The idea of automatic machines that can clean up after such testing is an old one but as yet unrealized because of the daunting cost, power and complexity requirements of capable robot mechanisms. A researcher at Los Alamos National Laboratory has invented and developed a new variety of living robots that are solar powered, legged, autonomous, adaptive to massive damage, and very inexpensive. This technology, called Nervous Networks (Nv), allows for the creation of capable walking mechanisms (known as Biomorphic robots, or Biomechs for short) that rather than work from task principles use instead a survival-based design philosophy. This allows Nv based machines to continue doing work even after multiple limbs and sensors have been removed or damaged, and to dynamically negotiate complex terrains as an emergent property of their operation (fighting to proceed, as it were). They are not programmed, and indeed, the twelve transistor Nv controller keeps their electronic cost well below that of most pocket radios. It is suspected that advanced forms of these machines in huge numbers may be an interesting, capable solution to the problem of general and specific UXO identification, tagging, and removal.« less

  5. 40 CFR 201.13 - Standard for rail car operations.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Standard for rail car operations. 201... Interstate Rail Carrier Operations Standards § 201.13 Standard for rail car operations. Effective December 31, 1976, no carrier subject to this regulation shall operate any rail car or combination of rail cars...

  6. 40 CFR 201.13 - Standard for rail car operations.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 26 2013-07-01 2013-07-01 false Standard for rail car operations. 201... Interstate Rail Carrier Operations Standards § 201.13 Standard for rail car operations. Effective December 31, 1976, no carrier subject to this regulation shall operate any rail car or combination of rail cars...

  7. 40 CFR 201.13 - Standard for rail car operations.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 25 2014-07-01 2014-07-01 false Standard for rail car operations. 201... Interstate Rail Carrier Operations Standards § 201.13 Standard for rail car operations. Effective December 31, 1976, no carrier subject to this regulation shall operate any rail car or combination of rail cars...

  8. 40 CFR 201.13 - Standard for rail car operations.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 26 2012-07-01 2011-07-01 true Standard for rail car operations. 201... Interstate Rail Carrier Operations Standards § 201.13 Standard for rail car operations. Effective December 31, 1976, no carrier subject to this regulation shall operate any rail car or combination of rail cars...

  9. 40 CFR 201.13 - Standard for rail car operations.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 25 2011-07-01 2011-07-01 false Standard for rail car operations. 201... Interstate Rail Carrier Operations Standards § 201.13 Standard for rail car operations. Effective December 31, 1976, no carrier subject to this regulation shall operate any rail car or combination of rail cars...

  10. 78 FR 32007 - Environmental Impact Statement for Tulsa-Oklahoma City Passenger Rail Corridor, Oklahoma, Lincoln...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-28

    ... Environmental Policy Act of 1969 (NEPA) for the State of Oklahoma High-Speed Rail Initiative: Tulsa--Oklahoma... South Central High Speed Rail Corridor and is a federally-designated high-speed rail (HSR) corridor...-Speed Rail Initiative: Tulsa--Oklahoma City Passenger Rail Corridor Investment Plan. The proposed route...

  11. Solar panel truss mounting systems and methods

    DOEpatents

    Al-Haddad, Tristan Farris; Cavieres, Andres; Gentry, Russell; Goodman, Joseph; Nolan, Wade; Pitelka, Taylor; Rahimzadeh, Keyan; Brooks, Bradley; Lohr, Joshua; Crooks, Ryan; Porges, Jamie; Rubin, Daniel

    2015-10-20

    An exemplary embodiment of the present invention provides a solar panel truss mounting system comprising a base and a truss assembly coupled to the base. The truss assembly comprises a first panel rail mount, second panel rail mount parallel to the first panel rail mount, base rail mount parallel to the first and second panel rail mounts, and a plurality of support members. A first portion of the plurality of support members extends between the first and second panel rail mounts. A second portion of the plurality of support members extends between the first panel rail mount and the base rail mount. A third portion of the plurality of support members extends between the second panel rail mount and the base rail mount. The system can further comprise a plurality of connectors for coupling a plurality of photovoltaic solar panels to the truss assembly.

  12. Solar panel truss mounting systems and methods

    DOEpatents

    Al-Haddad, Tristan Farris; Cavieres, Andres; Gentry, Russell; Goodman, Joseph; Nolan, Wade; Pitelka, Taylor; Rahimzadeh, Keyan; Brooks, Bradley; Lohr, Joshua; Crooks, Ryan; Porges, Jamie; Rubin, Daniel

    2016-06-28

    An exemplary embodiment of the present invention provides a solar panel truss mounting system comprising a base and a truss assembly coupled to the base. The truss assembly comprises a first panel rail mount, second panel rail mount parallel to the first panel rail mount, base rail mount parallel to the first and second panel rail mounts, and a plurality of support members. A first portion of the plurality of support members extends between the first and second panel rail mounts. A second portion of the plurality of support members extends between the first panel rail mount and the base rail mount. A third portion of the plurality of support members extends between the second panel rail mount and the base rail mount. The system can further comprise a plurality of connectors for coupling a plurality of photovoltaic solar panels to the truss assembly.

  13. Review on Selection and Suitability of Rail Transit Station Design Pertaining to Public Safety

    NASA Astrophysics Data System (ADS)

    Akabal, Farah Mohd; Masirin, Mohd Idrus Haji Mohd; Abidin Akasah, Zainal; Rohani, Munzilah Md

    2017-08-01

    Railway has emerged as a fast, convenient, safe, clean, and low-cost alternative to air and road transportation. Many countries have invested in rail transportation. In America, Europe and Asia, large investments are planned for rail transportation. This is because congestion problems can be reduced with the introduction of rail transportation. Rail transportation involves several components which are important to ensure the smooth and safe delivery of services such as locomotives, rail stations and railway tracks. Rail transit stations are places where trains stop to pick-up and drop-off passengers. Stations are vital for many to enable them to engage in work and social commitments. This paper focuses only on the rail transit station as it is one of the important components in rail transportation. It is also considered as a key public meeting place and space for interactions in a community. The role of rail transit station and the requirements of a good rail transit station are also described in this paper. Steps in selecting the location of rail transit station include the function and facilities in rail transit station are discussed with reference to best practices and handbooks. Selection of the appropriate rail transit station locations may help users indirectly. In addition, this paper will also elucidate on the design considerations for an efficient and effective rail transit station. Design selections for the rail transit station must be balanced between aesthetic value and functional efficiency. The right design selection may help conserve energy, assure and facilitate consumers even thought a rail transit station plays a smaller role in attracting consumers compared to a shopping complex or a residential building. This will contribute towards better and greener building for a green transportation facility. Thus, with this paper it is expected to assist the relevant authority to identify important elements in the selection and determination of suitable rail transit station design for the future. It is also important to ensure the design is appropriate from the selection and suitability perspective as design and operation will assist to facilitate the success of the national rail network and encourage the public to use rail transit system. A conducive and neatly design railway station will not only add to the passenger experience but also, as a supporting facility to the economic, social and environmental benefits of the rail industry.

  14. Modern Methods of Rail Welding

    NASA Astrophysics Data System (ADS)

    Kozyrev, Nikolay A.; Kozyreva, Olga A.; Usoltsev, Aleksander A.; Kryukov, Roman E.; Shevchenko, Roman A.

    2017-10-01

    Existing methods of rail welding, which are enable to get continuous welded rail track, are observed in this article. Analysis of existing welding methods allows considering an issue of continuous rail track in detail. Metallurgical and welding technologies of rail welding and also process technologies reducing aftereffects of temperature exposure are important factors determining the quality and reliability of the continuous rail track. Analysis of the existing methods of rail welding enable to find the research line for solving this problem.

  15. 46 CFR 28.410 - Deck rails, lifelines, storm rails, and hand grabs.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Deck rails, lifelines, storm rails, and hand grabs. 28..., lifelines, storm rails, and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section... with a bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab...

  16. 46 CFR 28.410 - Deck rails, lifelines, storm rails, and hand grabs.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 1 2014-10-01 2014-10-01 false Deck rails, lifelines, storm rails, and hand grabs. 28..., lifelines, storm rails, and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section... with a bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab...

  17. 46 CFR 28.810 - Deck rails, lifelines, storm rails and hand grabs.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Deck rails, lifelines, storm rails and hand grabs. 28..., storm rails and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section, deck... bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab must be...

  18. 46 CFR 28.810 - Deck rails, lifelines, storm rails and hand grabs.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false Deck rails, lifelines, storm rails and hand grabs. 28..., storm rails and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section, deck... bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab must be...

  19. 46 CFR 28.810 - Deck rails, lifelines, storm rails and hand grabs.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false Deck rails, lifelines, storm rails and hand grabs. 28..., storm rails and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section, deck... bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab must be...

  20. 46 CFR 28.410 - Deck rails, lifelines, storm rails, and hand grabs.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false Deck rails, lifelines, storm rails, and hand grabs. 28..., lifelines, storm rails, and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section... with a bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab...

  1. 46 CFR 28.410 - Deck rails, lifelines, storm rails, and hand grabs.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false Deck rails, lifelines, storm rails, and hand grabs. 28..., lifelines, storm rails, and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section... with a bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab...

  2. 46 CFR 28.410 - Deck rails, lifelines, storm rails, and hand grabs.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Deck rails, lifelines, storm rails, and hand grabs. 28..., lifelines, storm rails, and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section... with a bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab...

  3. 46 CFR 28.810 - Deck rails, lifelines, storm rails and hand grabs.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Deck rails, lifelines, storm rails and hand grabs. 28..., storm rails and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section, deck... bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab must be...

  4. 46 CFR 28.810 - Deck rails, lifelines, storm rails and hand grabs.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 1 2014-10-01 2014-10-01 false Deck rails, lifelines, storm rails and hand grabs. 28..., storm rails and hand grabs. (a) Except as otherwise provided in paragraph (d) of this section, deck... bulwark, chain link fencing, wire mesh, or an equivalent. (f) A suitable storm rail or hand grab must be...

  5. 78 FR 31916 - Yuma Cogeneration Associates; Notice of Filing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-28

    ... protest this filing must file in accordance with Rules 211 and 214 of the Commission's Rules of Practice.... Any person wishing to become a party must file a notice of intervention or motion to intervene, as... Internet access who will eFile a document and/or be listed as a contact for an intervenor must create and...

  6. User Data Package - Energy-Efficient Windows and Window Coverings for Naval Housing

    DTIC Science & Technology

    1990-07-01

    1765 33 Savannah 1819 32 Tucson 1800 32 Winslow 4782 35 Idaho Yuma 974 33 Boise 5809 44 Lewiston 5542 46 Arkansas Pocatello 7033 43 Fort Smith 3292 35...Alexandria, VA DODDS Pac, FAC, Okinawa, Japan DOE Fed Energy Mgt Program, Wash, DC: INEL Tech Lib Reports Sta. Idaho Falls. ID; Knolls Atomic Pwr Lab

  7. 76 FR 4338 - Combined Notice of Filings #2

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-25

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Combined Notice of Filings 2 January 18, 2011. Take notice that the Commission received the following electric rate filings: Docket Numbers: ER96-719-028; ER97-2801-030; ER99-2156-021; ER07- 1236-005. Applicants: MidAmerican Energy Company; PacifiCorp; Cordova Energy Company LLC; Yuma...

  8. To designate the United States courthouse under construction at 98 West First Street, Yuma, Arizona, as the "John M. Roll United States Courthouse".

    THOMAS, 112th Congress

    Rep. Grijalva, Raul M. [D-AZ-7

    2011-02-09

    02/10/2011 For Further Action See S.188. (All Actions) Notes: For further action, see S.188, which became Public Law 112-2 on 2/17/2011. Tracker: This bill has the status IntroducedHere are the steps for Status of Legislation:

  9. Detail of crankhandle lifting device. "Foote Bros. Gear & Mach ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail of crank-handle lifting device. "Foote Bros. Gear & Mach Corp, Chicago, 01T" appears of the side of the crank - Wellton-Mohawk Irrigation System, Wasteway No. 1, Wellton-Mohawk Canal, North side of Wellton-Mohawk Canal, bounded by Gila River to North & the Union Pacific Railroad & Gila Mountains to south, Wellton, Yuma County, AZ

  10. South Perimeter Road, view to the east. One and twocar ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    South Perimeter Road, view to the east. One- and two-car garages are visible at left; a row of citrus trees separate the road from a ball field at right; and a weather station is in the right foreground - Wellton-Mohawk Irrigation System, Building No. 1 (House), 30601 Wellton-Mohawk Drive, Wellton, Yuma County, AZ

  11. Wasteway, intake side. The floatoperated radial gates are housed behind ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Wasteway, intake side. The float-operated radial gates are housed behind the concrete (below water level), view to the northwest - Wellton-Mohawk Irrigation System, Wasteway No. 1, Wellton-Mohawk Canal, North side of Wellton-Mohawk Canal, bounded by Gila River to North & the Union Pacific Railroad & Gila Mountains to south, Wellton, Yuma County, AZ

  12. It's Not a Matter of Time: Highlights from the 2011 Competency-Based Summit

    ERIC Educational Resources Information Center

    Sturgis, Chris; Patrick, Susan; Pittenger, Linda

    2011-01-01

    From Anchorage, Alaska, to Orlando, Florida, and from Gray, Maine, to Yuma, Arizona, one hundred competency-based innovators gathered at the Competency-Based Learning Summit in March 2011. Sponsored by the Council of Chief State School Officers (CCSSO) and the International Association for K-12 Online Learning (iNACOL), the Summit was developed in…

  13. 77 FR 7600 - Notice of Segregation of Public Lands in the State of Arizona for the Restoration Design Energy...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-13

    ...--Agua Caliente Solar Energy Zone in Yuma County, AZ AGENCY: Bureau of Land Management, Interior. ACTION... of protecting potential sites for future solar energy development while they are being analyzed in... public lands corresponds with the analysis of these same public lands as a proposed Solar Energy Zone...

  14. 75 FR 70027 - Notice of Inventory Completion: Denver Museum of Nature & Science, Denver, CO

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-16

    ... Nation, Kansas; Quechan Tribe of the Fort Yuma Indian Reservation, California & Arizona; Sac & Fox Tribe of the Mississippi in Iowa; Sac & Fox Nation of Missouri in Kansas and Nebraska; Sac & Fox Nation..., California & Arizona; Sac & Fox Tribe of the Mississippi in Iowa; Sac & Fox Nation of Missouri in Kansas and...

  15. 75 FR 26774 - Notice of Re-Designation of the Service Delivery Area for the Cowlitz Indian Tribe

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-12

    ... Tribe of Louisiana St. Mary Parish, LA. Cocopah Tribe of Arizona Yuma, AZ, Imperial, CA. Coeur D'Alene... of the Colville Chelan, WA,\\8\\ Douglas, WA, Reservation, Washington. Ferry, WA, Grant, WA, Lincoln... & Siuslaw Indians of Oregon. Douglas, OR, Lane, OR, Lincoln, OR. Confederated Tribes of the Goshute Nevada...

  16. 77 FR 62413 - Establishment of the Cesar E. Chavez National Monument

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-12

    ... leaders in the history of the United States. From humble beginnings in Yuma, Arizona, to the founding of... through C[eacute]sar Ch[aacute]vez death in 1993, La Paz was at the forefront of the American farm worker..., La Paz became a symbol of the accomplishments and broadening of the American farm worker movement. At...

  17. Wear Enhancement of Wheel-Rail Interaction by Ultrasonic Nanocrystalline Surface Modification Technique.

    PubMed

    Chang, Seky; Pyun, Young-Sik; Amanov, Auezhan

    2017-02-16

    In this study, an ultrasonic nanocrystalline surface modification (UNSM) technique was applied to normal and heat-treated rails made of 60 kgK steel to enhance the wear resistance of the wheel-rail interaction. The hardness and compressive residual stress values of the untreated and UNSM-treated rails were measured by the Brinell hardness tester and X-ray diffraction technique, respectively. It was found, according to the measurement results, that the hardness was increased by about 20% and 8%, whereas the compressive residual stress was induced by about 52% and 62% for the UNSM-treated normal and heat-treated rails, respectively. The UNSM-treated normal rail showed a slightly higher hardness than the heat-treated rail. The wear resistance of rails with respect to rotating speed and rolling time was assessed using a rolling contact wear (RCW) tester under dry conditions. The RCW test results revealed that the wear of the UNSM-treated rails was enhanced in comparison with those of the untreated rails. Also, the wear amount of the rails was increased with increasing the rotation speed. The UNSM-treated normal rail exhibited the highest wear resistance with respect to the rotation speed. The wear mechanisms of the rails are also discussed based on microscopic images of the worn out surfaces.

  18. Wear Enhancement of Wheel-Rail Interaction by Ultrasonic Nanocrystalline Surface Modification Technique

    PubMed Central

    Chang, Seky; Pyun, Young-Sik; Amanov, Auezhan

    2017-01-01

    In this study, an ultrasonic nanocrystalline surface modification (UNSM) technique was applied to normal and heat-treated rails made of 60 kgK steel to enhance the wear resistance of the wheel-rail interaction. The hardness and compressive residual stress values of the untreated and UNSM-treated rails were measured by the Brinell hardness tester and X-ray diffraction technique, respectively. It was found, according to the measurement results, that the hardness was increased by about 20% and 8%, whereas the compressive residual stress was induced by about 52% and 62% for the UNSM-treated normal and heat-treated rails, respectively. The UNSM-treated normal rail showed a slightly higher hardness than the heat-treated rail. The wear resistance of rails with respect to rotating speed and rolling time was assessed using a rolling contact wear (RCW) tester under dry conditions. The RCW test results revealed that the wear of the UNSM-treated rails was enhanced in comparison with those of the untreated rails. Also, the wear amount of the rails was increased with increasing the rotation speed. The UNSM-treated normal rail exhibited the highest wear resistance with respect to the rotation speed. The wear mechanisms of the rails are also discussed based on microscopic images of the worn out surfaces. PMID:28772549

  19. Crashworthiness evaluation of light rail vehicle interiors.

    DOT National Transportation Integrated Search

    2011-12-01

    Statistically, light rail transit (LRT) systems have higher injury rates on a perpassengermile basis than heavy rail and commuter rail systems, because in most cities, light rail vehicles (LRVs) operate on city streets. Passenger safety is depe...

  20. National University Rail Transportation Center : Tier 1 : final report.

    DOT National Transportation Integrated Search

    2016-10-17

    This project was a collaborative effort between Michigan Techs Rail Transportation Program (RTP), a member of the National University Rail Center (NURail) and the Michigan Dept of Transportation (MDOT), Office of Rail to advance rail transportatio...

  1. Solar panel truss mounting systems and methods

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Al-Haddad, Tristan Farris; Cavieres, Andres; Gentry, Russell

    An exemplary embodiment of the present invention provides a solar panel truss mounting system comprising a base and a truss assembly coupled to the base. The truss assembly comprises a first panel rail mount, second panel rail mount parallel to the first panel rail mount, base rail mount parallel to the first and second panel rail mounts, and a plurality of support members. A first portion of the plurality of support members extends between the first and second panel rail mounts. A second portion of the plurality of support members extends between the first panel rail mount and the basemore » rail mount. A third portion of the plurality of support members extends between the second panel rail mount and the base rail mount. The system can further comprise a plurality of connectors for coupling a plurality of photovoltaic solar panels to the truss assembly.« less

  2. Estimation of rail wear limits based on rail strength investigations

    DOT National Transportation Integrated Search

    1998-12-01

    This report describes analyses performed to estimate limits on rail wear based on strength investigations. Two different failure modes are considered in this report: (1) permanent plastic bending, and (2) rail fracture. Rail bending stresses are calc...

  3. 2000 Montana state rail plan update

    DOT National Transportation Integrated Search

    2000-01-01

    This 2000 Montana Rail Plan Update is a comprehensive update of the State Rail Plan. The purpose of this update is to review the State's role in rail planning, retain eligibility for Local Rail Freight Assistance (LRFA) funding, update the descriptio...

  4. 49 CFR 37.83 - Remanufacture of rail vehicles and purchase or lease of remanufactured rail vehicles by public...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... lease of remanufactured rail vehicles by public entities operating rapid or light rail systems. 37.83... operating rapid or light rail systems. (a) This section applies to any public entity operating a rapid or... operates a rapid or light rail system any segment of which is included on the National Register of Historic...

  5. 49 CFR 37.83 - Remanufacture of rail vehicles and purchase or lease of remanufactured rail vehicles by public...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... lease of remanufactured rail vehicles by public entities operating rapid or light rail systems. 37.83... operating rapid or light rail systems. (a) This section applies to any public entity operating a rapid or... operates a rapid or light rail system any segment of which is included on the National Register of Historic...

  6. 49 CFR 37.83 - Remanufacture of rail vehicles and purchase or lease of remanufactured rail vehicles by public...

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... lease of remanufactured rail vehicles by public entities operating rapid or light rail systems. 37.83... operating rapid or light rail systems. (a) This section applies to any public entity operating a rapid or... operates a rapid or light rail system any segment of which is included on the National Register of Historic...

  7. 49 CFR 37.83 - Remanufacture of rail vehicles and purchase or lease of remanufactured rail vehicles by public...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... lease of remanufactured rail vehicles by public entities operating rapid or light rail systems. 37.83... operating rapid or light rail systems. (a) This section applies to any public entity operating a rapid or... operates a rapid or light rail system any segment of which is included on the National Register of Historic...

  8. 49 CFR 37.83 - Remanufacture of rail vehicles and purchase or lease of remanufactured rail vehicles by public...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... lease of remanufactured rail vehicles by public entities operating rapid or light rail systems. 37.83... operating rapid or light rail systems. (a) This section applies to any public entity operating a rapid or... operates a rapid or light rail system any segment of which is included on the National Register of Historic...

  9. Multi-point contact of the high-speed vehicle-turnout system dynamics

    NASA Astrophysics Data System (ADS)

    Ren, Zunsong

    2013-05-01

    The wheel-rail contact problems, such as the number, location and the track of contact patches, are very important for optimizing the spatial structure of the rails and lowering the vehicle-turnout system dynamics. However, the above problems are not well solved currently because of having the difficulties in how to determine the multi-contact, to preciously present the changeable profiles of the rails and to establish an accurate spatial turnout system dynamics model. Based on a high-speed vehicle-turnout coupled model in which the track is modeled as flexible with rails and sleepers represented by beams, the line tracing extreme point method is introduced to investigate the wheel-rail multiple contact conditions and the key sections of the blade rail, longer nose rail, shorter rail in the switch and nose rail area are discretized to represent the varying profiles of rails in the turnout. The dynamic interaction between the vehicle and turnout is simulated for cases of the vehicle divergently passing the turnout and the multi-point contact is obtained. The tracks of the contact patches on the top of the rails are presented and the wheel-rail impact forces are offered in comparison with the contact patches transference on the rails. The numerical simulation results indicate that the length of two-point contact occurrence of a worn wheel profile and rails is longer than that of the new wheel profile and rails; The two-point contact definitely occurs in the switch and crossing area. Generally, three-point contact doesn't occur for the new rail profile, which is testified by the wheel-rails interpolation distance and the first order derivative function of the tracing line extreme points. The presented research is not only helpful to optimize the structure of the turnout, but also useful to lower the dynamics of the high speed vehicle-turnout system.

  10. Movements of radio-marked California Ridgway's rails during monitoring surveys: Implications for population monitoring

    USGS Publications Warehouse

    Bui, Thuy-Vy D.; Takekawa, John Y.; Overton, Cory T.; Schultz, Emily R.; Hull, Joshua M.; Casazza, Michael L.

    2015-01-01

    The California Ridgway's rail Rallus obsoletus obsoletus (hereafter California rail) is a secretive marsh bird endemic to tidal marshes in the San Francisco Bay (hereafter bay) of California. The California rail has undergone significant range contraction and population declines due to a variety of factors, including predation and the degradation and loss of habitat. Call-count surveys, which include call playbacks, based on the standardized North American marsh bird monitoring protocol have been conducted throughout the bay since 2005 to monitor population size and distribution of the California rail. However, call-count surveys are difficult to evaluate for efficacy or accuracy. To measure the accuracy of call-count surveys and investigate whether radio-marked California rails moved in response to call-count surveys, we compared locations of radio-marked California rails collected at frequent intervals (15 min) to California rail detections recorded during call-count surveys conducted over the same time periods. Overall, 60% of radio-marked California rails within 200 m of observers were not detected during call-count surveys. Movements of radio-marked California rails showed no directional bias (P = 0.92) irrespective of whether or not playbacks of five marsh bird species (including the California rail) were broadcast from listening stations. Our findings suggest that playbacks of rail vocalizations do not consistently influence California rail movements during surveys. However, call-count surveys may underestimate California rail presence; therefore, caution should be used when relating raw numbers of call-count detections to population abundance.

  11. Rail-to-rail differential input amplification stage with main and surrogate differential pairs

    DOEpatents

    Britton, Jr., Charles Lanier; Smith, Stephen Fulton

    2007-03-06

    An operational amplifier input stage provides a symmetrical rail-to-rail input common-mode voltage without turning off either pair of complementary differential input transistors. Secondary, or surrogate, transistor pairs assume the function of the complementary differential transistors. The circuit also maintains essentially constant transconductance, constant slew rate, and constant signal-path supply current as it provides rail-to-rail operation.

  12. Analysis of minimum rail size in heavy axle load environment

    DOT National Transportation Integrated Search

    2013-04-15

    The effects of increasing axle loads on rail integrity are examined in this paper. In the present context, rail integrity refers to the prevention and control of rail failures. Rail failures usually occur because cracks or defects develop and grow fr...

  13. Developing course lecture notes on high-speed rail.

    DOT National Transportation Integrated Search

    2017-07-15

    1. Introduction a. World-wide Development of High-Speed Rail (Japan, Europe, China) b. High-speed Rail in the U.S. 2. High-Speed Rail Infrastructure a. Geometric Design of High Speed Rail i. Horizontal Curve ii. Vertical Curve iii. Grade and Turnout ...

  14. Assessment of Rail Seat Abrasion Patterns and Environment

    DOT National Transportation Integrated Search

    2012-05-01

    Rail seat abrasion (RSA) of concrete ties is manifested by the loss of material under the rail seat area and, in extreme cases, results in loss of rail clip holding power, reverse rail cant, and gauge widening. RSA was measured in several curves on t...

  15. 78 FR 59316 - Rail Vehicles Access Advisory Committee Meetings

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-26

    ...-0001] RIN 3014-AA42 Rail Vehicles Access Advisory Committee Meetings AGENCY: Architectural and... Vehicles Access Advisory Committee (Committee) will hold its first meeting. We, the Architectural and... transportation vehicles that operate on fixed guideway systems (e.g., rapid rail, light rail, commuter rail...

  16. Field homogeneity improvement of maglev NdFeB magnetic rails from joints.

    PubMed

    Li, Y J; Dai, Q; Deng, C Y; Sun, R X; Zheng, J; Chen, Z; Sun, Y; Wang, H; Yuan, Z D; Fang, C; Deng, Z G

    2016-01-01

    An ideal magnetic rail should provide a homogeneous magnetic field along the longitudinal direction to guarantee the reliable friction-free operation of high temperature superconducting (HTS) maglev vehicles. But in reality, magnetic field inhomogeneity may occur due to lots of reasons; the joint gap is the most direct one. Joint gaps inevitably exist between adjacent segments and influence the longitudinal magnetic field homogeneity above the rail since any magnetic rails are consisting of many permanent magnet segments. To improve the running performance of maglev systems, two new rail joints are proposed based on the normal rail joint, which are named as mitered rail joint and overlapped rail joint. It is found that the overlapped rail joint has a better effect to provide a competitive homogeneous magnetic field. And the further structure optimization has been done to ensure maglev vehicle operation as stable as possible when passing through those joint gaps. The results show that the overlapped rail joint with optimal parameters can significantly reduce the magnetic field inhomogeneity comparing with the other two rail joints. In addition, an appropriate gap was suggested when balancing the thermal expansion of magnets and homogenous magnetic field, which is considered valuable references for the future design of the magnetic rails.

  17. Intercity passenger rail : assessing the benefits of increased federal funding for Amtrak and high-speed passenger rail systems

    DOT National Transportation Integrated Search

    2001-03-21

    The Rail Passenger Service Act of 1970 created Amtrak to provide intercity passenger rail service. Like other major national intercity passenger rail systems in the world, Amtrak has received substantial government support-nearly $24 billion for capi...

  18. 46 CFR 169.329 - Storm rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Storm rails. 169.329 Section 169.329 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Construction and Arrangement Rails and Guards § 169.329 Storm rails. Suitable storm rails or hand grabs must be...

  19. 46 CFR 169.329 - Storm rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Storm rails. 169.329 Section 169.329 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Construction and Arrangement Rails and Guards § 169.329 Storm rails. Suitable storm rails or hand grabs must be...

  20. 46 CFR 169.329 - Storm rails.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Storm rails. 169.329 Section 169.329 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Construction and Arrangement Rails and Guards § 169.329 Storm rails. Suitable storm rails or hand grabs must be...

  1. 46 CFR 169.329 - Storm rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Storm rails. 169.329 Section 169.329 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Construction and Arrangement Rails and Guards § 169.329 Storm rails. Suitable storm rails or hand grabs must be...

  2. 46 CFR 169.329 - Storm rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Storm rails. 169.329 Section 169.329 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Construction and Arrangement Rails and Guards § 169.329 Storm rails. Suitable storm rails or hand grabs must be...

  3. 76 FR 77716 - Alternate Passenger Rail Service Pilot Program

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-14

    ... program that permits a rail carrier or rail carriers that own infrastructure over which Amtrak operates... develops a pilot program that permits a rail carrier or rail carriers that own infrastructure over which... the infrastructure as described in Sec. 269.7 of this final rule. In addition, such information...

  4. Simulation of rail yard emissions transport to the near-source environment

    EPA Science Inventory

    Rail yards are critical nodes in the freight transportation network and locations of clustered emission sources. When people reside in close proximity to an active rail yard, the near-field effect of rail yard emissions is of concern. Field characterization of near-rail yard ai...

  5. 46 CFR 169.327 - Deck rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ..., DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Construction and Arrangement Rails and Guards § 169.327 Deck rails. (a) All rails or lifelines must be at least 30 inches high... through bolted or welded to the deck. (b) Rails or lifelines must consist of evenly spaced courses. The...

  6. 46 CFR 169.327 - Deck rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ..., DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Construction and Arrangement Rails and Guards § 169.327 Deck rails. (a) All rails or lifelines must be at least 30 inches high... through bolted or welded to the deck. (b) Rails or lifelines must consist of evenly spaced courses. The...

  7. 46 CFR 169.327 - Deck rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Deck rails. 169.327 Section 169.327 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Construction and Arrangement Rails and Guards § 169.327 Deck rails. (a) All rails or lifelines must be at least 30 inches high...

  8. 46 CFR 169.327 - Deck rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Deck rails. 169.327 Section 169.327 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS SAILING SCHOOL VESSELS Construction and Arrangement Rails and Guards § 169.327 Deck rails. (a) All rails or lifelines must be at least 30 inches high...

  9. 76 FR 22747 - RailAmerica, Inc., Palm Beach Holdings, Inc., RailAmerica Transportation Corp., RailTex, Inc...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-22

    ...., Palm Beach Holdings, Inc., RailAmerica Transportation Corp., RailTex, Inc., Fortress Investment Group, LLC, and RR Acquisition Holding, LLC--Continuance in Control Exemption-- Conecuh Valley Railway, LLC...), Fortress Investment Group, LLC (Fortress), and RR Acquisition Holding, LLC (RR Acquisition) (collectively...

  10. 46 CFR 177.920 - Storm rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Storm rails. 177.920 Section 177.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS (UNDER 100 GROSS TONS) CONSTRUCTION AND ARRANGEMENT Rails and Guards § 177.920 Storm rails. Suitable storm rails or hand grabs must be...

  11. 46 CFR 177.920 - Storm rails.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Storm rails. 177.920 Section 177.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS (UNDER 100 GROSS TONS) CONSTRUCTION AND ARRANGEMENT Rails and Guards § 177.920 Storm rails. Suitable storm rails or hand grabs must be...

  12. 46 CFR 108.221 - Storm rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Storm rails. 108.221 Section 108.221 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Rails § 108.221 Storm rails. Each unit must have a storm rail in the following...

  13. 46 CFR 177.920 - Storm rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Storm rails. 177.920 Section 177.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS (UNDER 100 GROSS TONS) CONSTRUCTION AND ARRANGEMENT Rails and Guards § 177.920 Storm rails. Suitable storm rails or hand grabs must be...

  14. 46 CFR 108.221 - Storm rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Storm rails. 108.221 Section 108.221 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Rails § 108.221 Storm rails. Each unit must have a storm rail in the following...

  15. 46 CFR 108.221 - Storm rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Storm rails. 108.221 Section 108.221 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Rails § 108.221 Storm rails. Each unit must have a storm rail in the following...

  16. 46 CFR 108.221 - Storm rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Storm rails. 108.221 Section 108.221 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Rails § 108.221 Storm rails. Each unit must have a storm rail in the following...

  17. 46 CFR 127.320 - Storm rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Storm rails. 127.320 Section 127.320 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS CONSTRUCTION AND ARRANGEMENTS Rails and Guards § 127.320 Storm rails. Suitable storm rails must be installed in each passageway and at...

  18. 46 CFR 127.320 - Storm rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Storm rails. 127.320 Section 127.320 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS CONSTRUCTION AND ARRANGEMENTS Rails and Guards § 127.320 Storm rails. Suitable storm rails must be installed in each passageway and at...

  19. 46 CFR 177.920 - Storm rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Storm rails. 177.920 Section 177.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS (UNDER 100 GROSS TONS) CONSTRUCTION AND ARRANGEMENT Rails and Guards § 177.920 Storm rails. Suitable storm rails or hand grabs must be...

  20. 46 CFR 127.320 - Storm rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Storm rails. 127.320 Section 127.320 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS CONSTRUCTION AND ARRANGEMENTS Rails and Guards § 127.320 Storm rails. Suitable storm rails must be installed in each passageway and at...

  1. 46 CFR 127.320 - Storm rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Storm rails. 127.320 Section 127.320 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS CONSTRUCTION AND ARRANGEMENTS Rails and Guards § 127.320 Storm rails. Suitable storm rails must be installed in each passageway and at...

  2. 46 CFR 177.920 - Storm rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Storm rails. 177.920 Section 177.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS (UNDER 100 GROSS TONS) CONSTRUCTION AND ARRANGEMENT Rails and Guards § 177.920 Storm rails. Suitable storm rails or hand grabs must be...

  3. 46 CFR 108.221 - Storm rails.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Storm rails. 108.221 Section 108.221 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Rails § 108.221 Storm rails. Each unit must have a storm rail in the following...

  4. 46 CFR 127.320 - Storm rails.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Storm rails. 127.320 Section 127.320 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS CONSTRUCTION AND ARRANGEMENTS Rails and Guards § 127.320 Storm rails. Suitable storm rails must be installed in each passageway and at...

  5. 75 FR 2133 - Construction and Operation of the Quartzsite Solar Energy Project, La Paz County, AZ (DOE/EIS-0440)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-14

    ... transmission system. Western is issuing this notice to inform the public and interested parties about Western's... scope, proposed action, alternatives, and issues to be addressed in the EIS. Solar Reserve has applied to the Bureau of Land Management (BLM), Yuma Field Office for a right-of-way grant for the proposed...

  6. Northern California redwood forests provide important seasonal habitat for migrant bats

    Treesearch

    Theodore J. Weller; Craig A. Stricker

    2012-01-01

    Bats are known to roost in redwood forests year-round, but their activities outside the summer season are poorly understood. To improve understanding of the use of redwoods by resident and migrant bats, we conducted 74 mist net surveys between February 2008 and October 2010. Captures were dominated by Yuma myotis (M. yumanensis) in the summer and...

  7. 75 FR 29323 - Notice of Public Hearings of the Draft Environmental Impact Statement for Basing the U.S. Marine...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-25

    ... materials management; biological resources; topography, geology and soils; water resources; and cultural and... (Coastal California Gnatcatcher) and one endangered species (San Diego Fairy Shrimp), and loss of 0.05... operational squadrons at MCAS Miramar, 1 operational and 1 OT&E squadron at MCAS Yuma) related to the loss of...

  8. 77 FR 53214 - Announcement of Funding Awards; Service Coordinators in Multifamily Housing Program, Fiscal Year...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-31

    ...,104 Center, Inc. Center. AZ Casa Sierra Vista, Casa Sierra Vista.... 600-A E 25th St...... Yuma 30 190........... 246 176,271 Senior Citizens Avenue. Housing, LTD. NM New Mexico-American La Resolana 1025 Chelwood... Corporation. OH CRS, Ltd (Stern Hendy Clifton Place........ 900 Rue De La Paix... Cincinnati 183 375,387...

  9. Digital Imagery Compression Best Practices Guide - A Motion Imagery Standards Profile (MISP) Compliant Architecture

    DTIC Science & Technology

    2012-06-01

    MISP) COMPLIANT ARCHITECTURE WHITE SANDS MISSILE RANGE REAGAN TEST SITE YUMA PROVING GROUND DUGWAY PROVING GROUND ABERDEEN TEST CENTER...DIGITAL MOTION IMAGERY COMPRESSION BEST PRACTICES GUIDE – A MOTION IMAGERY STANDARDS PROFILE (MISP) COMPLIANT ARCHITECTURE ...delivery, and archival purposes. These practices are based on a Motion Imagery Standards Profile (MISP) compliant architecture , which has been defined

  10. 106-17 Telemetry Standards Front Matter

    DTIC Science & Technology

    2017-07-01

    IS UNLIMITED ABERDEEN TEST CENTER DUGWAY PROVING GROUND REAGAN TEST SITE REDSTONE TEST CENTER WHITE SANDS MISSILE RANGE YUMA PROVING GROUND...Council US Army White Sands Missile Range, New Mexico 88002-5110 This page intentionally left blank. Telemetry Standards, IRIG Standard 106-17...TM receiver commands for interoperability. f. Task TG-141: Update IRIG 106 with Standards for Data Quality Metrics (DQM) and Data Quality

  11. A study to explore the use of orbital remote sensing to determine native arid plant distribution. [Arizona Regional Ecological Test Site

    NASA Technical Reports Server (NTRS)

    Mcginnies, W. G. (Principal Investigator); Lepley, L. K.; Haase, E. F.; Conn, J. S.; Musick, H. B.; Foster, K. E.

    1974-01-01

    The author has identified the following significant results. It is possible to determine, from ERTS imagery, native arid plant distribution. Using techniques of multispectral masking and extensive fieldwork, three native vegetation communities were defined and mapped in the Avra Valley study area. A map was made of the Yuma area with the aid of ground truth correlations between areas of desert pavement visible on ERTS images and unique vegetation types. With the exception of the Yuma soil-vegetation correlation phenomena, only very gross differentiations of desert vegetation communities can be made from ERTS data. Vegetation communities with obvious vegetation density differences such as saguaro-paloverde, creosote bush, and riparian vegetation can be separated on the Avra Valley imagery while more similar communities such as creosote bush and saltbush could not be differentiated. It is suggested that large differences in vegetation density are needed before the signatures of two different vegetation types can be differentiated on ERTS imagery. This is due to the relatively insignificant contribution of vegetation to the total radiometric signature of a given desert scene. Where more detailed information concerning the vegetation of arid regions is required, large scale imagery is appropriate.

  12. Lower Gila South Resource Management Plan, La Paz, Maricopa, Pima, Pinal and Yuma Counties, Arizona

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Not Available

    1985-08-01

    Implementation of a resource management plan is proposed for 2.0 million surface acres and 1.9 million acres of subsurface minerals in the Lower Gila South resource area, located in La Paz, Maricopa, Pima, Pinal, and Yuma counties, Arizona. The preferred alternative would involve range land improvements consisting of construction of 47 miles of fence, 10 reservoirs and 7 wells. Portions of the New Water Mountains, Eagletail Mountains, Woosley Peak, and Table Top Mountains wilderness study areas (WSAs), totaling 190,391 acres, would be designated as wilderness. The remaining portions of these WSAs and eight other WSAs, totaling 431,540 acres, would notmore » be recommended for wilderness designation and would revert to multiple-use management. Approximately 72,123 acres of isolated land parcels would be made available for sale or exchange, approximately 36,845 acres of nonpublic lands would be acquired, 112,160 acres of state and private mineral estate would be acquired, and 23,645 acres of federal minerals would be disposed of to facilitate management. Ten utility corridors would be designated. Mineral access and off-road vehicle use would be restricted on the lands proposed for wilderness designation.« less

  13. 75 FR 51331 - Draft Tier II Environmental Impact Statement: Southeast High Speed Rail Corridor-Richmond, VA...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-19

    ... Carolina Department of Transportation Rail Division (NCDOT) and the Virginia Department of Rail and Public... Raleigh,'' in the subject heading; or Ms. Christine Fix, Department of Rail & Public Transportation, 600... Department of Rail and Public Transportation Office at 600 East Main Street, Suite 2102, Richmond, VA; and...

  14. 49 CFR 174.59 - Marking and placarding of rail cars.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 2 2012-10-01 2012-10-01 false Marking and placarding of rail cars. 174.59... RAIL General Handling and Loading Requirements § 174.59 Marking and placarding of rail cars. No person may transport a rail car carrying hazardous materials unless it is marked and placarded as required by...

  15. 49 CFR 174.59 - Marking and placarding of rail cars.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 2 2011-10-01 2011-10-01 false Marking and placarding of rail cars. 174.59... RAIL General Handling and Loading Requirements § 174.59 Marking and placarding of rail cars. No person may transport a rail car carrying hazardous materials unless it is marked and placarded as required by...

  16. 49 CFR 174.59 - Marking and placarding of rail cars.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 2 2014-10-01 2014-10-01 false Marking and placarding of rail cars. 174.59... RAIL General Handling and Loading Requirements § 174.59 Marking and placarding of rail cars. No person may transport a rail car carrying hazardous materials unless it is marked and placarded as required by...

  17. 49 CFR 174.59 - Marking and placarding of rail cars.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 2 2013-10-01 2013-10-01 false Marking and placarding of rail cars. 174.59... RAIL General Handling and Loading Requirements § 174.59 Marking and placarding of rail cars. No person may transport a rail car carrying hazardous materials unless it is marked and placarded as required by...

  18. 49 CFR 174.59 - Marking and placarding of rail cars.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Marking and placarding of rail cars. 174.59... RAIL General Handling and Loading Requirements § 174.59 Marking and placarding of rail cars. No person may transport a rail car carrying hazardous materials unless it is marked and placarded as required by...

  19. 46 CFR 72.40-10 - Storm rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 3 2010-10-01 2010-10-01 false Storm rails. 72.40-10 Section 72.40-10 Shipping COAST... and Guards § 72.40-10 Storm rails. (a) Suitable storm rails shall be installed in all passageways and at the deckhouse sides where passengers or crew might have normal access. Storm rails shall be...

  20. 46 CFR 72.40-10 - Storm rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 3 2013-10-01 2013-10-01 false Storm rails. 72.40-10 Section 72.40-10 Shipping COAST... and Guards § 72.40-10 Storm rails. (a) Suitable storm rails shall be installed in all passageways and at the deckhouse sides where passengers or crew might have normal access. Storm rails shall be...

  1. 46 CFR 72.40-10 - Storm rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 3 2011-10-01 2011-10-01 false Storm rails. 72.40-10 Section 72.40-10 Shipping COAST... and Guards § 72.40-10 Storm rails. (a) Suitable storm rails shall be installed in all passageways and at the deckhouse sides where passengers or crew might have normal access. Storm rails shall be...

  2. 46 CFR 72.40-10 - Storm rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 3 2012-10-01 2012-10-01 false Storm rails. 72.40-10 Section 72.40-10 Shipping COAST... and Guards § 72.40-10 Storm rails. (a) Suitable storm rails shall be installed in all passageways and at the deckhouse sides where passengers or crew might have normal access. Storm rails shall be...

  3. 46 CFR 72.40-10 - Storm rails.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 3 2014-10-01 2014-10-01 false Storm rails. 72.40-10 Section 72.40-10 Shipping COAST... and Guards § 72.40-10 Storm rails. (a) Suitable storm rails shall be installed in all passageways and at the deckhouse sides where passengers or crew might have normal access. Storm rails shall be...

  4. 49 CFR 212.231 - Highway-rail grade crossing inspector.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Highway-rail grade crossing inspector. 212.231... § 212.231 Highway-rail grade crossing inspector. (a) The highway-rail grade crossing inspector is required, at a minimum, to be able to conduct independent inspections of all types of highway-rail grade...

  5. 49 CFR 212.231 - Highway-rail grade crossing inspector.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Highway-rail grade crossing inspector. 212.231... § 212.231 Highway-rail grade crossing inspector. (a) The highway-rail grade crossing inspector is required, at a minimum, to be able to conduct independent inspections of all types of highway-rail grade...

  6. 49 CFR 212.231 - Highway-rail grade crossing inspector.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Highway-rail grade crossing inspector. 212.231... § 212.231 Highway-rail grade crossing inspector. (a) The highway-rail grade crossing inspector is required, at a minimum, to be able to conduct independent inspections of all types of highway-rail grade...

  7. 46 CFR 190.25-5 - Where rails required.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Where rails required. 190.25-5 Section 190.25-5 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OCEANOGRAPHIC RESEARCH VESSELS CONSTRUCTION AND ARRANGEMENT Rails and Guards § 190.25-5 Where rails required. (a) All vessels shall have efficient guard rails...

  8. NCHRP report 350 test 3-11 of the modified T8 bridge rail.

    DOT National Transportation Integrated Search

    2009-04-01

    A new flexible bridge rail system, referred to as the T8 rail, was designed as a replacement for the T6 rail in high-speed applications on culverts and thin deck structures. The T8 rail failed a crash test when the breakaway posts failed the thin dec...

  9. 77 FR 54655 - Genesee & Wyoming Inc.-Control-RailAmerica, Inc., et al.

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-05

    ... & Wyoming Inc.--Control--RailAmerica, Inc., et al. AGENCY: Surface Transportation Board. ACTION: Decision No... August 6, 2012, by Genesee and Wyoming Inc. (GWI) and RailAmerica, Inc. (RailAmerica). The application seeks Board approval under 49 U.S.C. 11323-11325 of the acquisition of control of RailAmerica, a...

  10. Optimization of wheel-rail interface friction using top-of-rail friction modifiers: State of the art

    NASA Astrophysics Data System (ADS)

    Khan, M. Roshan; Dasaka, Satyanarayana Murty

    2018-05-01

    High Speed Railways and Dedicated Freight Corridors are the need of the day for fast and efficient transportation of the ever growing population and freight across long distances of travel. With the increase in speeds and axle loads carried by these trains, wearing out of rails and train wheel sections are a common issue, which is due to the increase in friction at the wheel-rail interfaces. For the cases where the wheel-rail interface friction is less than optimum, as in case of high speed trains with very low axle loads, wheel-slips are imminent and loss of traction occurs when the trains accelerate rapidly or brake all of a sudden. These vast variety of traction problems around the wheel-rail interface friction need to be mitigated carefully, so that the contact interface friction neither ascents too high to cause material wear and need for added locomotive power, nor be on the lower side to cause wheel-slips and loss of traction at high speeds. Top-of-rail friction modifiers are engineered surface coatings applied on top of rails, to maintain an optimum frictional contact between the train wheels and the rails. Extensive research works in the area of wheel-rail tribology have revealed that the optimum frictional coefficients at wheel-rail interfaces lie at a value of around 0.35. Application of top-of-rail (TOR) friction modifiers on rail surfaces add an extra layer of material coating on top of the rails, with a surface frictional coefficient of the desired range. This study reviews the common types of rail friction modifiers, the methods for their application, issues related with the application of friction modifiers, and a guideline on selection of the right class of coating material based on site specific requirements of the railway networks.

  11. Identification and prioritization of rail squat defects in the field using rail magnetisation technology

    NASA Astrophysics Data System (ADS)

    Kaewunruen, Sakdirat

    2015-04-01

    Inevitably, rail squats and studs are continuing to be a serious problem for railway organisations around the world in the 21st century. They are typically classified as the growth of any cracks that have grown longitudinally through the subsurface and some of the cracks propagating to the bottom of rails transversely, and have branched from initial longitudinal cracks with a depression of rail surface. The horizontal crack, which results in a depression of rail surface, induces increased maintenance level, more frequent monitoring, compromised rail testing (as the crack shields the signal echoes), and possible broken rails. This paper presents field investigations using a magnetised-rail testing device developed by MRX Technologies to identify and prioritise the rail squats. Most of the in situ squats were found on the high rail of the transition (variable-radius curved track), which is associated with rolling contact fatigue (RCF). This investigation highlights the field performance of the MRX's surface crack detection technology in comparison with the traditional ultrasonic method and detailed walking inspection. Visually, it was found in the field that the size of the RCF squats varies from very small to moderate. The predicted crack data were obtained by scanning the magnitised rails. The comparison of the actual crack depths (ultrasonic) and the predicted crack depths (MRX device) shows: • A possible correlation for small RCF/ squat cracks. • Poor interpretation of larger defects and welds. The field assessment also suggests some practical issues required for further development, including the detection of rail spalling, deep transverse crack, welding, and so on.

  12. Power System Implementation and Demonstration at Camp Katuu, Palau

    DTIC Science & Technology

    2011-05-11

    Horizontal Rows 3 Vertical Rows 3 Vertical Rows with Center Walkway 6 Vertical Rows 1 Amount of rail mounting (lf) 1440’ 1800’ 1800’ 1440’ 2 Ease of rail...installation some rail cutting required to clear walkway requires two level rail mounting system requires two level rail mounting system no rail...Maintenance access 21" horizontal & vertical walkway , does not have direct access to all panels Accessible with 15" walkways Direct access to each panel and

  13. 49 CFR 213.352 - Torch cut rail.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Torch cut rail. 213.352 Section 213.352... Torch cut rail. (a) Except as a temporary repair in emergency situations no rail having a torch cut end shall be used. When a rail end with a torch cut is used in emergency situations, train speed over that...

  14. 49 CFR 37.89 - Remanufacture of intercity and commuter rail cars and purchase or lease of remanufactured...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 1 2012-10-01 2012-10-01 false Remanufacture of intercity and commuter rail cars and purchase or lease of remanufactured intercity and commuter rail cars. 37.89 Section 37.89... commuter rail cars and purchase or lease of remanufactured intercity and commuter rail cars. (a) This...

  15. 49 CFR 37.89 - Remanufacture of intercity and commuter rail cars and purchase or lease of remanufactured...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 1 2013-10-01 2013-10-01 false Remanufacture of intercity and commuter rail cars and purchase or lease of remanufactured intercity and commuter rail cars. 37.89 Section 37.89... commuter rail cars and purchase or lease of remanufactured intercity and commuter rail cars. (a) This...

  16. 49 CFR 213.352 - Torch cut rail.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Torch cut rail. 213.352 Section 213.352... Torch cut rail. (a) Except as a temporary repair in emergency situations no rail having a torch cut end shall be used. When a rail end with a torch cut is used in emergency situations, train speed over that...

  17. 46 CFR 190.25-10 - Storm rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 7 2013-10-01 2013-10-01 false Storm rails. 190.25-10 Section 190.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 190.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  18. 46 CFR 92.25-10 - Storm rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Storm rails. 92.25-10 Section 92.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 92.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  19. 46 CFR 190.25-10 - Storm rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 7 2012-10-01 2012-10-01 false Storm rails. 190.25-10 Section 190.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 190.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  20. 46 CFR 190.25-10 - Storm rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Storm rails. 190.25-10 Section 190.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 190.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  1. 46 CFR 92.25-10 - Storm rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Storm rails. 92.25-10 Section 92.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 92.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  2. 46 CFR 92.25-10 - Storm rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Storm rails. 92.25-10 Section 92.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 92.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  3. 46 CFR 92.25-10 - Storm rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Storm rails. 92.25-10 Section 92.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 92.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  4. 46 CFR 190.25-10 - Storm rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 7 2011-10-01 2011-10-01 false Storm rails. 190.25-10 Section 190.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 190.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  5. 46 CFR 190.25-10 - Storm rails.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 7 2014-10-01 2014-10-01 false Storm rails. 190.25-10 Section 190.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 190.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  6. 46 CFR 92.25-10 - Storm rails.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Storm rails. 92.25-10 Section 92.25-10 Shipping COAST... ARRANGEMENT Rails and Guards § 92.25-10 Storm rails. (a) On vessels in ocean and coastwise service, suitable storm rails shall be installed in all passageways and at the deckhouse sides where persons on board...

  7. 78 FR 36017 - MCM Rail Services LLC, d/b/a Baltimore Industrial Railroad-Operation Exemption-Hilco SP Rail, LLC

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-14

    ... DEPARTMENT OF TRANSPORTATION Surface Transportation Board [Docket No. FD 35725] MCM Rail Services LLC, d/b/a Baltimore Industrial Railroad-- Operation Exemption--Hilco SP Rail, LLC MCM Rail Services LLC, d/b/a Baltimore Industrial Railroad (MCM), a noncarrier, has filed a verified notice of exemption...

  8. 76 FR 16538 - Solid Waste Rail Transfer Facilities

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-24

    ... circumstances. Upon receiving a land-use-exemption permit issued by the Board, a solid waste rail transfer... new application for a land-use-exemption permit if the rail line associated with the solid waste rail... transportation of solid waste by rail. (2) The Board will not grant a land-use-exemption permit for a solid waste...

  9. Safety assessment of underground vehicles passing over highly resilient curved tracks in the presence of a broken rail

    NASA Astrophysics Data System (ADS)

    Suárez, B.; Rodriguez, P.; Vázquez, M.; Fernández, I.

    2012-01-01

    Vehicle-track interaction for a new resilient slab track designed to reduce noise and vibration levels was analysed, in order to assess the derailment risk on a curved track when encountering a broken rail. Sensitivity of the rail support spacing of the relative position of the rail breakage between two adjacent rail supports and of running speed were analysed for two different elasticities of the rail fastening system. In none of the cases analysed was observed an appreciable difference between either of the elastic systems. As was expected, the most unfavourable situations were those with greater rail support spacing and those with greater distance from the breakage to the nearest rail support, although in none of the simulations performed did a derailment occur when running over the broken rail. When varying the running speed, the most favourable condition was obtained for an intermediate speed, due to the superposition of two antagonistic effects.

  10. Prediction of the interaction between a simple moving vehicle and an infinite periodically supported rail - Green's functions approach

    NASA Astrophysics Data System (ADS)

    Mazilu, Traian

    2010-09-01

    This paper herein describes the interaction between a simple moving vehicle and an infinite periodically supported rail, in order to signalise the basic features of the vehicle/track vibration behaviour in general, and wheel/rail vibration, in particular. The rail is modelled as an infinite Timoshenko beam resting on semi-sleepers via three-directional rail pads and ballast. The time-domain analysis was performed applying Green's matrix of the track method. This method allows taking into account the nonlinearities of the wheel/rail contact and the Doppler effect. The numerical analysis is dedicated to the wheel/rail response due to two types of excitation: the steady-state interaction and rail irregularities. The study points out to certain aspects regarding the parametric resonance, the amplitude-modulated vibration due to corrugation and the Doppler effect.

  11. 76 FR 4250 - Operating Certain Railroad Tank Cars in Excess of 263,000 Pounds Gross Rail Load; Approval

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-25

    ... Railroad Tank Cars in Excess of 263,000 Pounds Gross Rail Load; Approval AGENCY: Federal Railroad... certain railroad tank cars in excess of 263,000 pounds gross rail load. SUMMARY: On May 14, 2010, the... to allow certain rail tank cars, transporting hazardous materials, to exceed the gross weight on rail...

  12. 49 CFR 37.79 - Purchase or lease of new rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... entities operating rapid or light rail systems. 37.79 Section 37.79 Transportation Office of the Secretary... operating rapid or light rail systems. Each public entity operating a rapid or light rail system making a... system shall ensure that the vehicle is readily accessible to and usable by individuals with disabilities...

  13. 49 CFR 37.79 - Purchase or lease of new rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... entities operating rapid or light rail systems. 37.79 Section 37.79 Transportation Office of the Secretary... operating rapid or light rail systems. Each public entity operating a rapid or light rail system making a... system shall ensure that the vehicle is readily accessible to and usable by individuals with disabilities...

  14. 49 CFR 37.79 - Purchase or lease of new rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... entities operating rapid or light rail systems. 37.79 Section 37.79 Transportation Office of the Secretary... operating rapid or light rail systems. Each public entity operating a rapid or light rail system making a... system shall ensure that the vehicle is readily accessible to and usable by individuals with disabilities...

  15. 49 CFR 37.79 - Purchase or lease of new rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... entities operating rapid or light rail systems. 37.79 Section 37.79 Transportation Office of the Secretary... operating rapid or light rail systems. Each public entity operating a rapid or light rail system making a... system shall ensure that the vehicle is readily accessible to and usable by individuals with disabilities...

  16. 49 CFR 37.79 - Purchase or lease of new rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... entities operating rapid or light rail systems. 37.79 Section 37.79 Transportation Office of the Secretary... operating rapid or light rail systems. Each public entity operating a rapid or light rail system making a... system shall ensure that the vehicle is readily accessible to and usable by individuals with disabilities...

  17. Excitation Method of Linear-Motor-Type Rail Brake without Using Power Sources by Dynamic Braking with Zero Electrical Output

    NASA Astrophysics Data System (ADS)

    Sakamoto, Yasuaki; Kashiwagi, Takayuki; Hasegawa, Hitoshi; Sasakawa, Takashi; Fujii, Nobuo

    The eddy current rail brake is a type of braking system used in railway vehicles. Because of problems such as rail heating and problems associated with ensuring that power is supplied when the feeder malfunctions, this braking system has not been used for practical applications in Japan. Therefore, we proposed the use of linear induction motor (LIM) technology in eddy current rail brake systems. The LIM rail brake driven by dynamic braking can reduce rail heating and generate the energy required for self-excitation. In this paper, we present an excitation system and control method for the LIM rail brake driven by “dynamic braking with zero electrical output”. The proposed system is based on the concept that the LIM rail brake can be energized without using excitation power sources such as a feeder circuit and that high reliability can be realized by providing an independent excitation system. We have studied this system and conducted verification tests using a prototype LIM rail brake on a roller rig. The results show that the system performance is adequate for commercializing the proposed system, in which the LIM rail brake is driven without using any excitation power source.

  18. Interaction between moving tandem wheels and an infinite rail with periodic supports - Green's matrices of the track method in stationary reference frame

    NASA Astrophysics Data System (ADS)

    Mazilu, Traian

    2017-08-01

    This paper approaches the issue of the interaction between moving tandem wheels and an infinite periodically supported rail and points out at the basic characteristics in the steady-state interaction behaviour and in the interaction in the presence of the rail random irregularity. The rail is modelled as an infinite Timoshenko beam resting on supports which are discretely modelling the inertia of the sleepers and ballast and also the viscoelastic features of the rail pads, the ballast and the subgrade. Green‧s matrices of the track method in stationary reference frame were applied so as to conduct the time-domain analysis. This method allows to consider the nonlinearities of the wheel/rail contact and the Doppler effect. The study highlights certain aspects regarding the influence of the wheel base on the wheels/rail contact forces, particularly at the parametric resonance, due to the coincidence between the wheel/rail natural frequency and the passing frequency and also when the rail surface exhibits random irregularity. It has been shown that the wheel/rail dynamic behaviour is less intense when the wheel base equals integer multiple of the sleeper bay.

  19. FY 1998 Proposed Rail Improvement Program Supplement

    DOT National Transportation Integrated Search

    1997-01-01

    This FY 1998 Proposed Rail Improvement Program Supplement contains those rail plan amendments which have been published subsequent to the FY 1997 Proposed Rail Improvement program supplement. This document also contains the benefit/cost methodology u...

  20. Indiana rail plan

    DOT National Transportation Integrated Search

    2009-07-08

    The 2009 Indiana Rail Plan was developed as part of the Indiana Multimodal Freight and Mobility Plan to direct the State of Indianas future freight and passenger rail policy, provide a framework to guide future decisions regarding rail system inve...

  1. Preliminary national rail plan.

    DOT National Transportation Integrated Search

    2009-10-15

    The Passenger Rail Investment and Improvement Act of 2008 (PRIIA) directed the Administrator of the Federal Railroad Administration (FRA) to develop a Preliminary National Rail Plan (PNRP or Preliminary Plan) to address the rail needs of the Nation. ...

  2. Excitation of Surface Electromagnetic Waves on Railroad Rail

    DOT National Transportation Integrated Search

    1978-03-31

    UMTA's Office of Rail Technology research programs aim to improve urban rail transportation systems safety. This rail-transit research study attempts to develop an onboard, separate and independent obstacle-detection system--Surface Electromagnetic W...

  3. Transportation, social and financial impacts of light and commuter rail.

    DOT National Transportation Integrated Search

    2009-09-01

    While transportation impacts are often masked by heavy growth in corridor traffic and latent travel demand, : modeling enables measuring the real transportation impacts of rail projects. Rail transit is both safe and : environmentally friendly. Rail ...

  4. 49 CFR 213.135 - Switches.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... point to the stock rail. Broken or cracked switch point rails will be subject to the requirements of... of the stock rail. (d) The heel of each switch rail shall be secure and the bolts in each heel shall...

  5. 49 CFR 213.135 - Switches.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... point to the stock rail. Broken or cracked switch point rails will be subject to the requirements of... of the stock rail. (d) The heel of each switch rail shall be secure and the bolts in each heel shall...

  6. Potential scenarios of concern for high speed rail operations

    DOT National Transportation Integrated Search

    2011-03-16

    Currently, multiple operating authorities are proposing the : introduction of high-speed rail service in the United States. : While high-speed rail service shares a number of basic : principles with conventional-speed rail service, the operational : ...

  7. Rail Integrity Experience on the Washington Metro System

    DOT National Transportation Integrated Search

    2016-04-12

    The Washington Metropolitan Area Transit Authority (WMATA) provides passenger rail service to the nations capital. Although the rail system carries only passenger trains, the rail integrity issues that WMATA must manage are similar to those that f...

  8. Review of Rail Behavior Under Wheel/Rail Impact Loading

    DOT National Transportation Integrated Search

    1986-04-01

    The report discusses several studies involving factors that significantly affect rail life, particularly wheel impact loads. Parameters that characterize the effect of wheel impact loads on rail behavior are examined in terms of system variables such...

  9. Analysis of Lateral Rail Restraint.

    DOT National Transportation Integrated Search

    1983-09-01

    This report deals with the analysis of lateral rail strength using the results of experimental investigations and a nonlinear rail response model. Part of the analysis involves the parametric study of the influence of track parameters on lateral rail...

  10. Rail base corrosion and cracking prevention

    DOT National Transportation Integrated Search

    2014-07-01

    Rail base corrosion combined with fatigue or damage can significantly reduce rail life. Studies were done to examine the relative contribution of damage, corrosion, and fatigue on rail life. The combined effects can be separated into constituent fact...

  11. Study on service performance of 880 MPa-grade and 980 MPa-grade rail steels

    NASA Astrophysics Data System (ADS)

    Zhu, M.; Xu, G.; Zhou, J. H.; Wang, R. M.; Gan, X. L.

    2017-09-01

    With the rapid development of economy in China, the requirement for railway passenger and cargo transportation becomes higher and higher. Increasing speed and developing heavy-haul transportation can effectively improve the transportation capacity of railway. The requirement for rail steels with higher ability of abrasion resistance becomes urgent. Two kinds of rails, i.e., 880 MPa-grade and 980 MPa-grade rail steels, were laid on cargo line with 500 m short radius curve. The service performances of the tested steels were continuously tracked and analyzed during operation of total 22.5 million tons loads. Macro morphology, light band width, surface hardness and profile of rails were investigated. The results show that the performance of 980 MPa-grade rail steel is superior to that of 880 MPa-grade rail steel at same circumstance. Therefore, 980 MPa-grade rail should be selected in the cargo line with small radius curve.

  12. Installation Restoration Program Management Plan

    DTIC Science & Technology

    1999-03-01

    Proving Ground Dugway Proving Ground White Sands Missile Range Yuma Proving Ground Aviation Missile Command Redstone Arsenal Letterkenny Army Depot...approved for Public Release DUC QUALITY INSPECTED 3 REPLY TO ATTENTION OF DEPARTMENT OF THE ARMY U.S. ARMY ENVIRONMENTAL CENTER ABERDEEN PROVING GROUND ...environmental documents. The TIC is located at the USAEC at Aberdeen Proving Ground , MD. If an installation or MACOM/MSC is not aware of

  13. The Effects of Health Insurance Coverage on the Math Achievement Trajectories of School Children in Yuma County, Arizona: Implications for Education Accountability Policy

    ERIC Educational Resources Information Center

    Garcy, Anthony M.

    2013-01-01

    U.S. Federal and state education policies place considerable emphasis on assessing the effects that schools and teachers have on student test score performance. It is important for education policy makers to also consider other factors that can affect student achievement. This study finds that an exogenous school factor, discontinuous health…

  14. Looking east along the operating deck above the intake toward ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Looking east along the operating deck above the intake toward the Main Control Room. An evaporative-cooling system is to the left of the Control Room, and a motor-operated, geared trolly hoist and rake for removing debris from the trash rack is in the foreground - Wellton-Mohawk Irrigation System, Pumping Plant No. 1, Bounded by Gila River & Union Pacific Railroad, Wellton, Yuma County, AZ

  15. The Radar Roadmap

    DTIC Science & Technology

    2013-01-01

    local oscillator to measure the phase of both the transmitted and received pulses and then matching them to the correct range ambiguity. 2.5 High...track closely spaced objects. White Sands Missile Range (WSMR) and Patrick Air Force Base (AFB) operate the phased -array AN/MPS-39 MOTRs. The...ABERDEEN TEST CENTER DUGWAY PROVING GROUND REAGAN TEST SITE YUMA PROVING GROUND WHITE SANDS MISSILE RANGE NAVAL AIR WARFARE CENTER AIRCRAFT

  16. 9 CFR 97.2 - Administrative instructions prescribing commuted traveltime.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... Palmer 3 Arizona: Douglas 1 Do Nogales 6 Do Phoenix 6 Do Sierra Vista 3 Naco Douglas 2 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 2 Nogales 1 Do Douglas 6 Do Phoenix 6 Do Sierra Vista 3 San Luis Phoenix 6 Do Yuma 2 Sasabe Douglas 6 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 6 Do Tuscon 3 California: Calexico...

  17. 9 CFR 97.2 - Administrative instructions prescribing commuted traveltime.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Palmer 3 Arizona: Douglas 1 Do Nogales 6 Do Phoenix 6 Do Sierra Vista 3 Naco Douglas 2 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 2 Nogales 1 Do Douglas 6 Do Phoenix 6 Do Sierra Vista 3 San Luis Phoenix 6 Do Yuma 2 Sasabe Douglas 6 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 6 Do Tuscon 3 California: Calexico...

  18. 9 CFR 97.2 - Administrative instructions prescribing commuted traveltime.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... Palmer 3 Arizona: Douglas 1 Do Nogales 6 Do Phoenix 6 Do Sierra Vista 3 Naco Douglas 2 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 2 Nogales 1 Do Douglas 6 Do Phoenix 6 Do Sierra Vista 3 San Luis Phoenix 6 Do Yuma 2 Sasabe Douglas 6 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 6 Do Tuscon 3 California: Calexico...

  19. 9 CFR 97.2 - Administrative instructions prescribing commuted traveltime.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... Palmer 3 Arizona: Douglas 1 Do Nogales 6 Do Phoenix 6 Do Sierra Vista 3 Naco Douglas 2 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 2 Nogales 1 Do Douglas 6 Do Phoenix 6 Do Sierra Vista 3 San Luis Phoenix 6 Do Yuma 2 Sasabe Douglas 6 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 6 Do Tuscon 3 California: Calexico...

  20. 9 CFR 97.2 - Administrative instructions prescribing commuted traveltime.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... Palmer 3 Arizona: Douglas 1 Do Nogales 6 Do Phoenix 6 Do Sierra Vista 3 Naco Douglas 2 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 2 Nogales 1 Do Douglas 6 Do Phoenix 6 Do Sierra Vista 3 San Luis Phoenix 6 Do Yuma 2 Sasabe Douglas 6 Do Nogales 4 Do Phoenix 6 Do Sierra Vista 6 Do Tuscon 3 California: Calexico...

  1. Complete genome sequence of a natural Escherichia coli O145:H11 isolate that belongs to Phylo-group A

    USDA-ARS?s Scientific Manuscript database

    Escherichia coli O145:H11 strain RM14721 was originally isolated from wildlife feces near a leafy greens-growing region in Yuma, Arizona. This strain was initially positive in stx1; however, in the subsequent cultures, stx1 was not detected by PCR. Here we report the complete genome sequence and ann...

  2. 3 CFR 8884 - Proclamation 8884 of October 8, 2012. Establishment of the César E. Chávez National Monument

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... revered civil rights leaders in the history of the United States. From humble beginnings in Yuma, Arizona... achievements and contributions to the history of the United States made by César Chávez and the farm worker..., cultures, and organizations to the farm worker movement, such as women, youth, and religious organizations...

  3. Testing of the fracture resistance of rails

    NASA Astrophysics Data System (ADS)

    Swiderski, Zdzislaw

    Various grades of rail steel as well as whole rail sections were subjected to fracture resistance tests according to the unified method. It was found that heat treatment of rails increased fracture resistance by 50 percent. However, residual stresses also had a substantial effect. Apparent durability values N(sub c) from the Wilson formula have been derived. The influence of residual stresses on rail durability is stated.

  4. 77 FR 12182 - Safety Standard for Portable Bed Rails: Final Rule

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-29

    ... of ASTM F2085- 10a, comply with the following: (i) 1.4.1 Foam and inflatable bed rails need meet only...--portable bed rail constructed primarily of nonrigid materials such as fabric or foam. 3.1.11 inflatable bed..., inflatable bed rail, are terms that are now incorporated as non-rigid bed rail under new section 3.1.12 in...

  5. 49 CFR 37.81 - Purchase or lease of used rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... entities operating rapid or light rail systems. 37.81 Section 37.81 Transportation Office of the Secretary... operating rapid or light rail systems. (a) Except as provided elsewhere in this section, each public entity operating a rapid or light rail system which, after August 25, 1990, purchases or leases a used rapid or...

  6. 49 CFR 37.81 - Purchase or lease of used rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... entities operating rapid or light rail systems. 37.81 Section 37.81 Transportation Office of the Secretary... operating rapid or light rail systems. (a) Except as provided elsewhere in this section, each public entity operating a rapid or light rail system which, after August 25, 1990, purchases or leases a used rapid or...

  7. 49 CFR 37.81 - Purchase or lease of used rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... entities operating rapid or light rail systems. 37.81 Section 37.81 Transportation Office of the Secretary... operating rapid or light rail systems. (a) Except as provided elsewhere in this section, each public entity operating a rapid or light rail system which, after August 25, 1990, purchases or leases a used rapid or...

  8. 49 CFR 37.81 - Purchase or lease of used rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... entities operating rapid or light rail systems. 37.81 Section 37.81 Transportation Office of the Secretary... operating rapid or light rail systems. (a) Except as provided elsewhere in this section, each public entity operating a rapid or light rail system which, after August 25, 1990, purchases or leases a used rapid or...

  9. 49 CFR 37.81 - Purchase or lease of used rail vehicles by public entities operating rapid or light rail systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... entities operating rapid or light rail systems. 37.81 Section 37.81 Transportation Office of the Secretary... operating rapid or light rail systems. (a) Except as provided elsewhere in this section, each public entity operating a rapid or light rail system which, after August 25, 1990, purchases or leases a used rapid or...

  10. Rail and Motor Outloading Capability Study. Fort Devens, Massachusetts,

    DTIC Science & Technology

    1980-03-01

    AD-AI 765 MILITARY TRAFFIC MANAGEMENT COMMAND TRANSPORTATION EN-ETC FIO 15/5 RAIL AND MOTOR OUTLOADING CAPABILITY STUDY. FORT DEVENS . MASSAC-ETC(U...REPORT TE 79-4-54 RAIL AND MOTOR OUTLOADING CAPABILITY STUDY FORT DEVENS , MASSACHUSETTS Accession Far DTIC TAB March 1980 _stribution/ Av_alability...INTRODUCTION 6.. . .. . . II. ANALYSIS OF FORT DEVENS ’ RAIL OUTLOADING FACILITIES ... . . .. . .9 A. General .9.. B. Rail Facility Description

  11. Evaluating the attractiveness of a new light rail extension: Testing simple change and displacement change hypotheses

    PubMed Central

    Brown, Barbara B.; Tribby, Calvin P.; Tharp, Doug; Flick, Kristi; Miller, Harvey J.; Smith, Ken R.; Jensen, Wyatt

    2015-01-01

    Many communities in the United States have been adding new light rail to bus-predominant public transit systems. However, there is disagreement as to whether opening light rail lines attracts new ridership or merely draws ridership from existing transit users. We study a new light rail line in Salt Lake City, Utah, USA, which is part of a complete street redevelopment. We utilize a pre-test post-test control group quasi-experimental design to test two different measures of ridership change. The first measure is calculated from stops along the light rail route; the second assumes that nearby bus stops might be displaced by the rail and calculates ridership change with those stops included as baseline. Both the simple measure (transit use changes on the complete street light rail corridor) and the “displacement” measure (transit use changes in the one-quarter mile catchment areas around new light rail stops) showed significant (p < .01) and substantial (677%) increases in transit passengers compared to pre-light rail bus users. In particular, the displacement analysis discredits a common challenge that when a new light rail line opens, most passengers are simply former bus riders whose routes were canceled in favor of light rail. The study suggests that light rail services can attract additional ridership to public transit systems. In addition, although pre-post control-group designs require time and effort, this project underscores the benefits of such quasi-experimental designs in terms of the strength of the inferences that can be drawn about the impacts of new transit infrastructure and services. PMID:26543329

  12. Evaluating the attractiveness of a new light rail extension: Testing simple change and displacement change hypotheses.

    PubMed

    Werner, Carol M; Brown, Barbara B; Tribby, Calvin P; Tharp, Doug; Flick, Kristi; Miller, Harvey J; Smith, Ken R; Jensen, Wyatt

    2016-01-01

    Many communities in the United States have been adding new light rail to bus-predominant public transit systems. However, there is disagreement as to whether opening light rail lines attracts new ridership or merely draws ridership from existing transit users. We study a new light rail line in Salt Lake City, Utah, USA, which is part of a complete street redevelopment. We utilize a pre-test post-test control group quasi-experimental design to test two different measures of ridership change. The first measure is calculated from stops along the light rail route; the second assumes that nearby bus stops might be displaced by the rail and calculates ridership change with those stops included as baseline. Both the simple measure (transit use changes on the complete street light rail corridor) and the "displacement" measure (transit use changes in the one-quarter mile catchment areas around new light rail stops) showed significant ( p < .01) and substantial (677%) increases in transit passengers compared to pre-light rail bus users. In particular, the displacement analysis discredits a common challenge that when a new light rail line opens, most passengers are simply former bus riders whose routes were canceled in favor of light rail. The study suggests that light rail services can attract additional ridership to public transit systems. In addition, although pre-post control-group designs require time and effort, this project underscores the benefits of such quasi-experimental designs in terms of the strength of the inferences that can be drawn about the impacts of new transit infrastructure and services.

  13. Investigation into the vibration of metro bogies induced by rail corrugation

    NASA Astrophysics Data System (ADS)

    Ling, Liang; Li, Wei; Foo, Elbert; Wu, Lei; Wen, Zefeng; Jin, Xuesong

    2017-01-01

    The current research of rail corrugation mainly focuses on the mechanisms of its formation and development. Compared with the root causes and development mechanisms, the wheel-rail impacts, the fatigue failure of vehicle-track parts, and the loss of ride comfort due to rail corrugation should also be taken into account. However, the influences of rail corrugation on vehicle and track vibration, and failure of vehicle and track structural parts are barely discussed in the literature. This paper presents an experimental and numerical investigation of the structural vibration of metro bogies caused by rail corrugation. Extensive experiments are conducted to investigate the effects of short-pitch rail corrugation on the vibration accelerations of metro bogies. A dynamic model of a metro vehicle coupled with a concrete track is established to study the influence of rail corrugation on the structural vibration of metro bogies. The field test results indicate that the short-pitch rail corrugation generates strong vibrations on the axle-boxes and the bogie frames, therefore, accelerates the fatigue failure of the bogie components. The numerical results show that short-pitch rail corrugation may largely reduce the fatigue life of the coil spring, and improving the damping value of the primary vertical dampers is likely to reduce the strong vibration induced by short-pitch rail corrugation. This research systematically studies the effect of rail corrugation on the vibration of metro bogies and proposes some remedies for mitigating strong vibrations of metro bogies and reducing the incidence of failure in primary coil springs, which would be helpful in developing new metro bogies and track maintenance procedures.

  14. Wheel/Rail Noise and Vibration Control

    DOT National Transportation Integrated Search

    1974-05-01

    Reported here are the interim results of a program under the UMTA Urban Rail Supporting Technology Program to develop a basic understanding of urban transit wheel/rail noise generation for application to the evaluation and improvement of wheel/rail n...

  15. 76 FR 19914 - Safety Standard for Portable Bed Rails: Notice of Proposed Rulemaking

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-11

    ... constructed primarily of nonrigid materials, such as fabric or foam. An ``inflatable bed rail'' is defined as..., such as fabric or foam; Inflatable bed rail is a portable bed rail constructed primarily of nonrigid...

  16. 49 CFR 213.119 - Continuous welded rail (CWR); plan contents.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... following items: (i) Loose, bent, or missing joint bolts; (ii) Rail end batter or mismatch that contributes... amount and length of rail end batter or ramp on each rail end; the amount of tread mismatch; the vertical...

  17. 49 CFR 213.119 - Continuous welded rail (CWR); plan contents.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... following items: (i) Loose, bent, or missing joint bolts; (ii) Rail end batter or mismatch that contributes... amount and length of rail end batter or ramp on each rail end; the amount of tread mismatch; the vertical...

  18. Analysis of Rail Transit Vehicle Dynamic Curving Performance

    DOT National Transportation Integrated Search

    1984-06-01

    An analytical model is developed for determining the dynamic curving performance of rail transit vehicles. The dynamic wheel/rail interaction forces, vehicle suspension and body motions and track displacement are computed, as well as wheel and rail w...

  19. Control of rolling contact fatigue on premium rails in revenue service.

    DOT National Transportation Integrated Search

    2014-11-01

    Effective rail maintenance strategies are : essential for controlling rolling contact fatigue : (RCF) and reducing wear of rails under heavy : axle load (HAL) operations. In an effort to : optimize rail maintenance strategies in revenue : service, Tr...

  20. Another look at the question of density and rail transit.

    DOT National Transportation Integrated Search

    2011-07-01

    Long community discussions about rail often include whether a citys spatial distribution of : housing, employment and other trip generators is conducive to supporting rail transit. A citys : decision to construct rail transit is based on an arr...

  1. A desire named streetcar : fantasy and fact in rail transit planning

    DOT National Transportation Integrated Search

    1992-06-30

    The forecasts that led local officials in eight U.S. cities to advocate rail transit projects over competing, less capital-intensive options grossly overestimated rail transit ridership and underestimated rail construction costs and operating expense...

  2. Undergraduate Certificate in Rail Transportation/Engineering.

    DOT National Transportation Integrated Search

    2016-05-05

    A shift in the U.S. transportation environment has led to a revival in rail transport, especially in : freight rail1. In the meantime, an aging rail employee demographic presents a severe threat to : sufficient level of individuals equipped to handle...

  3. Hazardous Materials Flow by Rail

    DOT National Transportation Integrated Search

    1990-03-01

    The report presents a quantitative overview of the movement of hazardous materials by rail in the United States. The data used is a hazardous materials rail waybill sample developed at TSC from the 1983 Rail Waybill Sample. The report examines (1) th...

  4. The commuter rail circulator network design problem : formulation, solution methods, and applications

    DOT National Transportation Integrated Search

    2007-08-01

    Commuter rail is increasingly popular as a means to introduce rail transportation to metropolitan transportation systems. The long-term benefits of commuter rail include the addition of capacity to the transportation system, providing a quality commu...

  5. On-line high-speed rail defect detection.

    DOT National Transportation Integrated Search

    2004-10-01

    This report presents the results of phase 2 of the project On-line high-speed rail defect detection aimed at improving the reliability and the speed of current defect detection in rails. Ultrasonic guided waves, traveling in the rail running di...

  6. Analyses of rail chill effect

    DOT National Transportation Integrated Search

    1998-06-01

    The principles of heat transfer are applied to analyze the so-called "rail chill" effect, which refers to hear loss by conduction from a hot rail vehicle wheel through the contact area into a cold rail, the wheel having been heated by friction brakin...

  7. Home school student visit and introduction to rail transportation and engineering.

    DOT National Transportation Integrated Search

    2016-06-22

    This project consisted of hosting local Champaign-Urbana, Illinois home school students for a visit to : the Rail Transportation and Engineering Center (RailTEC) at the University of Illinois at Urbana- : Champaign (UIUC). Beyond visiting RailTEC, st...

  8. 49 CFR 236.711 - Bond, rail joint.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Bond, rail joint. 236.711 Section 236.711 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION... Bond, rail joint. A metallic connection attached to adjoining rails to insure electrical conductivity. ...

  9. 49 CFR 236.752 - Joint, rail, insulated.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Joint, rail, insulated. 236.752 Section 236.752 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION... Joint, rail, insulated. A joint in which electrical insulation is provided between adjoining rails. ...

  10. Rail accelerator research at Lewis Research Center

    NASA Technical Reports Server (NTRS)

    Kerslake, W. R.; Cybyk, B. Z.

    1982-01-01

    A rail accelerator was chosen for study as an electromagnetic space propulsion device because of its simplicity and existing technology base. The results of a mission feasibility study using a large rail accelerator for direct launch of ton-size payloads from the Earth's surface to space, and the results of initial tests with a small, laboratory rail accelerator are presented. The laboratory rail accelerator has a bore of 3 by 3 mm and has accelerated 60 mg projectiles to velocities of 300 to 1000 m/s. Rail materials of Cu, W, and Mo were tested for efficiency and erosion rate.

  11. A Big Data Analysis Approach for Rail Failure Risk Assessment.

    PubMed

    Jamshidi, Ali; Faghih-Roohi, Shahrzad; Hajizadeh, Siamak; Núñez, Alfredo; Babuska, Robert; Dollevoet, Rolf; Li, Zili; De Schutter, Bart

    2017-08-01

    Railway infrastructure monitoring is a vital task to ensure rail transportation safety. A rail failure could result in not only a considerable impact on train delays and maintenance costs, but also on safety of passengers. In this article, the aim is to assess the risk of a rail failure by analyzing a type of rail surface defect called squats that are detected automatically among the huge number of records from video cameras. We propose an image processing approach for automatic detection of squats, especially severe types that are prone to rail breaks. We measure the visual length of the squats and use them to model the failure risk. For the assessment of the rail failure risk, we estimate the probability of rail failure based on the growth of squats. Moreover, we perform severity and crack growth analyses to consider the impact of rail traffic loads on defects in three different growth scenarios. The failure risk estimations are provided for several samples of squats with different crack growth lengths on a busy rail track of the Dutch railway network. The results illustrate the practicality and efficiency of the proposed approach. © 2017 The Authors Risk Analysis published by Wiley Periodicals, Inc. on behalf of Society for Risk Analysis.

  12. Effects of anchoring and arc structure on the control authority of a rail plasma actuator

    NASA Astrophysics Data System (ADS)

    Choi, Young-Joon; Gray, Miles; Sirohi, Jayant; Raja, Laxminarayan L.

    2017-09-01

    Experiments were conducted on a rail plasma actuator (RailPAc) with different electrode cross sections (rails or rods) to assess methods to improve the actuation authority, defined as the impulse generated for a given electrical input. The arc was characterized with electrical measurements and high-speed images, while impulse measurements quantified the actuation authority. A RailPAc power supply capable of delivering  ∼1 kA of current at  ∼100 V was connected to rod electrodes (free-floating with circular cross-section) and rail electrodes (flush-mounted in a flat plate with rectangular cross-section). High-speed images show that the rail electrodes cause the arc to anchor itself to the anode electrode and transit in discrete jumps, while rod electrodes permit the arc to transit smoothly without anchoring. The impulse measurements reveal that the anchoring reduces the actuation authority by  ∼21% compared to a smooth transit, and the effect of anchoring can be suppressed by reducing the gap between the rails to 2 mm. The study further demonstrates that if a smooth transit is achieved, the control authority can be increased with a larger gap and larger arc current. In conclusion, the actuation authority of a RailPAc can be maximized by carefully choosing a gap width that prevents anchoring. Further study is warranted to increase the RailPAc actuation authority by introducing multiple turns of wires beneath the RailPAc to augment the induced magnetic field.

  13. A method for improved accuracy in three dimensions for determining wheel/rail contact points

    NASA Astrophysics Data System (ADS)

    Yang, Xinwen; Gu, Shaojie; Zhou, Shunhua; Zhou, Yu; Lian, Songliang

    2015-11-01

    Searching for the contact points between wheels and rails is important because these points represent the points of exerted contact forces. In order to obtain an accurate contact point and an in-depth description of the wheel/rail contact behaviours on a curved track or in a turnout, a method with improved accuracy in three dimensions is proposed to determine the contact points and the contact patches between the wheel and the rail when considering the effect of the yaw angle and the roll angle on the motion of the wheel set. The proposed method, with no need of the curve fitting of the wheel and rail profiles, can accurately, directly, and comprehensively determine the contact interface distances between the wheel and the rail. The range iteration algorithm is used to improve the computation efficiency and reduce the calculation required. The present computation method is applied for the analysis of the contact of rails of CHINA (CHN) 75 kg/m and wheel sets of wearing type tread of China's freight cars. In addition, it can be proved that the results of the proposed method are consistent with that of Kalker's program CONTACT, and the maximum deviation from the wheel/rail contact patch area of this two methods is approximately 5%. The proposed method, can also be used to investigate static wheel/rail contact. Some wheel/rail contact points and contact patch distributions are discussed and assessed, wheel and rail non-worn and worn profiles included.

  14. Midwest regional rail system : a transportation network for the 21 century : executive report

    DOT National Transportation Integrated Search

    2000-02-01

    The Midwest Regional Rail Initiative is an ongoing effort to develop an improved and expanded passenger rail system in the Midwest. Since 1996, the Midwest Regional Rail Initiative (MWRRI) advanced from a series of service concepts, including increas...

  15. 36 CFR Appendix F to Part 1191 - Modifications Adopted by the Department of Transportation

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... negotiate steps may have to travel compared to the general public. Modification to 406 of Appendix D 406... shall be 8 inches (205 mm) minimum above top of rail. In light rail, commuter rail, and intercity rail...

  16. Wheel/Rail Noise Control : A Critical Evaluation

    DOT National Transportation Integrated Search

    1981-01-01

    Noise and vibration are the major sources of environmental impact from urban rail transit operations, and is a concern for both new and existing systems. One of the primary sources of noise on rail transit systems is wheel/rail noise, or, the noise e...

  17. Wheel/Rail Noise and Vibration : Volume 1. Mechanics of Wheel Rail Noise Generation.

    DOT National Transportation Integrated Search

    1975-05-01

    The final reports are reported of a project to develop a basic understanding of urban transit wheel/rail noise control measures. Analytical models of impedance, response, radiation efficiency, and directivity of wheels and rails are presented and com...

  18. 75 FR 17462 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-06

    ... decision may be purchased by contacting the office of Public Assistance, Governmental Affairs, and...-2)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the second quarter 2010 Rail Cost...

  19. Rail transportation : Federal Railroad Administration's new approach to rail safety

    DOT National Transportation Integrated Search

    1997-07-01

    In 1980, the Congress passed the Staggers Rail Act, which fostered substantial changes in the railroad industry. By 1995, fewer large freight railroads accounted for most of the industry's revenue and train miles. At the same time, these freight rail...

  20. 78 FR 57450 - State Rail Plan Guidance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-18

    ... development of State rail plans, as appropriate. A commenter recommended that the FRA Regional Manager be... integration of State rail plan development within the statewide/nonmetropolitan transportation planning... Guidance is to describe the processes for the development, submission, and acceptance of State rail plans...

  1. In-Service Performance and Costs of Methods to Control Urban Rail System Noise

    DOT National Transportation Integrated Search

    1979-12-01

    This study evaluates the acoustic and economic effectiveness of five methods of controlling wheel/rail noise and vibration on urban rail transit systems, namely: rail grinding, wheel truing, resilient wheels, ring-damped wheels, and welded vs. jointe...

  2. Proceedings : Seminar on the use of Composite Third Rail in Electrified Transit and Commuter Rail Systems

    DOT National Transportation Integrated Search

    1978-11-01

    The seminar was organized at the request of UMTA to disseminate accurate information on, and experience with, composite (aluminum and steel) third, or contact rail, in wayside power distribution systems of electrified urban rail properties. The semin...

  3. Wheel/Rail Noise and Vibration : Volume 2. Applications to Control of Wheel/Rail Noise.

    DOT National Transportation Integrated Search

    1975-05-01

    The final reports are reported of a project to develop a basic understanding of urban transit wheel/rail noise control measures. Analytical models of impedance, response, radiation efficiency, and directivity of wheels and rails are presented and com...

  4. 76 FR 59483 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-26

    ... the decision may be purchased by contacting the Office of Public Assistance, Governmental Affairs, and...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board, DOT. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the fourth quarter 2011 Rail Cost Adjustment...

  5. Effect of Wheel/Rail Loads on Concrete Tie Stresses and Rail Rollover.

    DOT National Transportation Integrated Search

    2011-09-21

    As a result of vertical and lateral wheel/rail forces, high contact stresses can develop at the interface between the rail base and tie. Under certain conditions, these stresses can exceed the strength of the concrete tie and result in deterioration ...

  6. 77 FR 68722 - National Highway-Rail Crossing Inventory Reporting Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-16

    ...-0007, Notice No. 2] RIN 2130-AC26 National Highway-Rail Crossing Inventory Reporting Requirements... Notice of Proposed Rulemaking (NPRM) on National Highway-Rail Crossing Inventory Reporting Requirements... National Highway-Rail Crossing Inventory (Crossing Inventory). This notice announces the scheduling of the...

  7. 77 FR 48591 - State Rail Plan Guidance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-14

    ... Plan Guidance AGENCY: Federal Railroad Administration (FRA), Department of Transportation (DOT). ACTION: Request for Public Comment on Proposed State Rail Plan Guidance. SUMMARY: FRA is publishing this notice to... plans. State rail plans are documents that are required under Section 303 of the Passenger Rail...

  8. Data Analysis and Instrumentation Requirements for Evaluating Rail Joints and Rail Fasteners in Urban Track

    DOT National Transportation Integrated Search

    1975-02-01

    Rail fasteners for concrete ties and direct fixation and bolted rail joints have been identified as key components for improving track performance. However, the lack of statistical load data limits the development of improved design criteria and eval...

  9. Pedestrian/bicyclist warning devices and signs at highway-rail and pathway-rail grade crossings.

    DOT National Transportation Integrated Search

    2013-04-01

    Federal reporting shows a relatively constant number of pedestrian and bicycle fatalities at highway-rail and : pathway-rail grade crossings over the past 10 years. This is in contrast to a marked decrease in trainvehicle : collisions at highway-r...

  10. 49 CFR 1580.101 - Rail security coordinator.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... the corporate level. (d) Each freight railroad carrier, rail hazardous materials shipper, and rail hazardous materials receiver required to have an RSC must provide to TSA the names, title, phone number(s... any of this information changes. (e) Each freight railroad carrier, rail hazardous materials shipper...

  11. 49 CFR 1580.101 - Rail security coordinator.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... the corporate level. (d) Each freight railroad carrier, rail hazardous materials shipper, and rail hazardous materials receiver required to have an RSC must provide to TSA the names, title, phone number(s... any of this information changes. (e) Each freight railroad carrier, rail hazardous materials shipper...

  12. 49 CFR 1580.101 - Rail security coordinator.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... the corporate level. (d) Each freight railroad carrier, rail hazardous materials shipper, and rail hazardous materials receiver required to have an RSC must provide to TSA the names, title, phone number(s... any of this information changes. (e) Each freight railroad carrier, rail hazardous materials shipper...

  13. New Hampshire state rail plan 2001

    DOT National Transportation Integrated Search

    2001-04-01

    This report is the 2001 update to the New Hampshire Statewide Rail Plan, which was last updated in 1991 and amended in 1993. The Rail Plan presents an overview of the current status of the New Hampshire Rail System, who operates it and how it is util...

  14. Vibro-Acoustic Forecasts for STS (Space Transportation System) Launches at V23, Vandenberg AFB: Results Summary and the Payload Preparation Room

    DTIC Science & Technology

    1985-05-08

    Displacement Time Series Forecasts for Channels 2 Through 8 and (b) Channels 9 Through 16 33 17. Sample PSD Plots for ( a ) Levels 99 and 119 East Cell Rail...for Sensors at ( a ) Levels 99 and 119 on the West Cell Rail, (b) Level 69 on the East and West Cell Rail Footings, and (c) Level 99 on the West Cell Rail...17. Sample PSD Plots for ( a ) Levels 99 and 119 East Cell Rail Locations, (b) level 69 Sensors on the East and West Cell Rail Footings, and (c) Level

  15. Control Measurements of Crane Rails Performed by Terrestrial Laser Scanning

    PubMed Central

    Kregar, Klemen; Možina, Jan; Ambrožič, Tomaž; Kogoj, Dušan; Marjetič, Aleš; Štebe, Gašper; Savšek, Simona

    2017-01-01

    This article presents a method for measuring the geometry of crane rails with terrestrial laser scanning (TLS). Two sets of crane rails were divided into segments, their planes were adjusted, and the characteristic rail lines were defined. We used their profiles to define the positional and altitude deviations of the rails, the span and height difference between the two rails, and we also verified that they complied with the Eurocode 3 standard. We tested the method on crane rails at the hydroelectric power plant in Krško and the thermal power plant in Brestanica. We used two scanning techniques: “pure” TLS (Riegel VZ-400) and “hybrid” TLS (Leica MS50) scanning. This article’s original contribution lies in the detailed presentation of the computations used to define the characteristic lines of the rails without using the numeric procedures from existing software packages. We also analysed the influence of segment length and point density on the rail geometry results, and compared the two laser scanning techniques. We also compared the results obtained by terrestrial laser scanning with the results obtained from the classic polar method, which served as a reference point for its precision. PMID:28726755

  16. 75 FR 7426 - Periodic Reporting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-19

    ... change in transportation cost system sampling. The proposal involves distributing rail costs using inter...) sampling, and proposes instead to distribute rail costs using the Inter-BC highway distribution factors. \\1... rail sampling, and to use the TRACS inter-BMC distribtion in place of the Rail distribution key in Cost...

  17. Linear friction welding for constructing and repairing rail for high speed and intercity passenger service rail : final report.

    DOT National Transportation Integrated Search

    2016-08-01

    This project developed a solid-state welding process based on linear friction welding (LFW) technology. While resistance flash welding or : thermite techniques are tried and true methods for joining rails and performing partial rail replacement repai...

  18. 77 FR 37958 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-25

    ..., http://www.stb.dot.gov . Copies of the decision may be purchased by contacting the Office of Public...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board, DOT. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the third quarter 2012 rail cost adjustment...

  19. 75 FR 35877 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-23

    ... available on our Web site, http://www.stb.dot.gov . Copies of the decision may be purchased by contacting...-3)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the third quarter 2010 rail cost...

  20. 75 FR 58019 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-23

    ..., http://www.stb.dot.gov . Copies of the decision may be purchased by contacting the office of Public...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board, DOT. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the fourth quarter 2010 Rail Cost Adjustment...

  1. 75 FR 80895 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-23

    ..., http://www.stb.dot.gov . Copies of the decision may be purchased by contacting the Office of Public...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board, DOT. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the first quarter 2011 Rail Cost Adjustment...

  2. 76 FR 16037 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-22

    ..., http://www.stb.dot.gov . Copies of the decision may be purchased by contacting the Office of Public...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board, DOT. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the second quarter 2011 Rail Cost Adjustment...

  3. 78 FR 37660 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-21

    ..., http://www.stb.dot.gov . Copies of the decision may be purchased by contacting the Office of Public...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board, DOT. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board approves the third quarter 2013 Rail Cost Adjustment Factor...

  4. 76 FR 37191 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-24

    ... our Web site, http://www.stb.dot.gov . Copies of the decision may be purchased by contacting the...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board, DOT. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the third quarter 2011 Rail Cost Adjustment...

  5. 78 FR 59093 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-25

    ...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board, DOT ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the fourth quarter 2013 rail cost adjustment factor (RCAF) and cost index filed by the Association of American Railroads. The fourth quarter 2013 RCAF...

  6. 78 FR 17764 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-22

    ..., http://www.stb.dot.gov . Copies of the decision may be purchased by contacting the Office of Public...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board, DOT. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the second quarter 2013 Rail Cost Adjustment...

  7. Bridge rail and approach railing for low-volume roads in Iowa : tech transfer summary, March 2010.

    DOT National Transportation Integrated Search

    2010-03-01

    The primary objective of the research summarized below was to describe the state of the practice regarding the nations bridge rails and approach guardrails and to perform a statewide crash analysis involving bridge rails and approach guardrails on...

  8. Pulmonary embolism after long duration rail travel: economy class syndrome or rail coach syndrome.

    PubMed

    Mittal, S K; Chopra, S; Calton, R

    2011-07-01

    Pulmonary embolism after long duration air travel is well described. However it can also occur following a long duration rail or road transport. We present a case of 43 year old male who developed deep venous thrombosis and acute pulmonary embolism after a long rail journey. We propose to call it as rail coach syndrome and stress the need for taking the same preventive measures as recommended for airline passengers.

  9. Static stall alleviation using a rail plasma actuator

    NASA Astrophysics Data System (ADS)

    Choi, Young-Joon; Gray, Miles; Sirohi, Jayant; Raja, Laxminarayan L.

    2018-07-01

    An experimental study was conducted to investigate the ability of a rail plasma actuator (RailPAc) to alleviate static stall on an airfoil. The RailPAc device consists of parallel rails flush mounted on the upper surface of a VR-12 airfoil, with a high-current (∼1.3 kA) arc bridging the gap between the rails. A Lorentz force (∼0.3 N lasting  ∼1 ms) generated on the arc propels it along the airfoil chord and transfers momentum to the surrounding flow. Experiments were conducted in a low speed wind tunnel at two different Reynolds numbers ( and ) and various static angles of attack (up to  ∼30°). Particle image velocimetry (PIV) was used to measure the flow over the passive and actuated airfoil, while the airfoil lift was measured using a force balance. The experiments showed that the RailPAc promotes flow reattachment and can suppress static stall over a wide range of angles of attack. Operation of a single RailPAc resulted in  ∼40 improvement in post-stall lift and  ∼4° increase in stall angle compared to a passive airfoil with an unpowered RailPAc. The results provide insight into the actuation mechanism and demonstrate, for the first time, the ability of the RailPAc to alleviate static stall on an airfoil.

  10. Modelling of dynamic contact length in rail grinding process

    NASA Astrophysics Data System (ADS)

    Zhi, Shaodan; Li, Jianyong; Zarembski, A. M.

    2014-09-01

    Rails endure frequent dynamic loads from the passing trains for supporting trains and guiding wheels. The accumulated stress concentrations will cause the plastic deformation of rail towards generating corrugations, contact fatigue cracks and also other defects, resulting in more dangerous status even the derailment risks. So the rail grinding technology has been invented with rotating grinding stones pressed on the rail with defects removal. Such rail grinding works are directed by experiences rather than scientifically guidance, lacking of flexible and scientific operating methods. With grinding control unit holding the grinding stones, the rail grinding process has the characteristics not only the surface grinding but also the running railway vehicles. First of all, it's important to analyze the contact length between the grinding stone and the rail, because the contact length is a critical parameter to measure the grinding capabilities of stones. Moreover, it's needed to build up models of railway vehicle unit bonded with the grinding stone to represent the rail grinding car. Therefore the theoretical model for contact length is developed based on the geometrical analysis. And the calculating models are improved considering the grinding car's dynamic behaviors during the grinding process. Eventually, results are obtained based on the models by taking both the operation parameters and the structure parameters into the calculation, which are suitable for revealing the process of rail grinding by combining the grinding mechanism and the railway vehicle systems.

  11. Director, Operational Test and Evaluation FY 2005 Annual Report

    DTIC Science & Technology

    2005-12-01

    agent at room temperature, and moderate humidity in a specially-sealed chamber at Dugway Proving Ground , Utah. • The tolerance of the...Manned Ground Vehicles. The Army is conducting extensive NLOS-C developmental test firings at Yuma Proving Ground , Arizona. A detailed report on... agent , another would destroy ton containers of mustard blister agent ). After completion of a campaign, the facility will revert to OT status for

  12. Identification and Quantification of Hydrocarbon Products in Effluents.

    DTIC Science & Technology

    1980-05-01

    Tobyhanna Army Depot ATTN: Const. Mgmt. Br. Jacksonville Tooele Army Depot ATTN: Engr. Library Japan Watervliet Arsenal Jidda Yuma Proving Ground Chief...the prepared standard series were stored in volumetric flasks sealed with latex caps over ground glass stoppers. Absorption spectra of the standa-rds in...Facilities Engineer Walter Reed Army Medical Center ATTN: DAEN-CW ARRADCOM ATIN: DAEN-RM Aberdeen Proving Ground USACC ATTN: DAEN-CCP Army Matis. and Mechanics

  13. In-Flight Performance Evaluation of Experimental Information Displays

    DTIC Science & Technology

    1979-05-01

    Chemical Systems Laboratory Experimentation Command Aberden Proving Ground ,MD Technical Library 21010 (1) Box 22 Fort Ord, CA 93941 (1) 21 US Amy Materiel...US Army Missile R&D Command Library, Bldg 3071 Redstone Arsenal, AL 35809 (1) ATTN: ATSL-DOSL Aberdeen Proving Ground , MD US Army Yuma Proving Ground ...Systems Chief Analysis Agency Benet Weapons Laboratory ATTN: Reports Distribution LCWSL, USA ARRADCOH Aberdeen Proving Ground , MD ATTN: DRDAR-LCB-TL

  14. A Comparison of Afghanistan, Yuma, Az, and Manufactured Sands Melted on EB-PVD Thermal Barrier Coatings

    DTIC Science & Technology

    2014-09-18

    superalloy materials enabled increased turbine engine temperatures. Further gains were achieved through the development of single - crystal materials...To further increase combustion temperatures without exceeding the material property limitations of the Ni-based single crystal alloy, elaborate...definition) SLR – Single Lens Reflex SPM – Suspended Particle Matter S – Sulfur TBC – Thermal Barrier Coating TC – Thermocouple TM – Melting

  15. Low Relative Humidity in the Atmosphere

    DTIC Science & Technology

    1989-01-01

    occur [1]. Dew points in most standard metrorological data are calculated from measurements with psychrometers to determine wet-bulb and dry-bulb...variation existed in relation to the observed data during the day. Only one entire day was missing, and an interpolation was made between the...few sporadic reports at other hours. No attempt has been made to interpolate missing observations as was done for Yuma. Because of the large number of

  16. An Investigation Into Ventilation And Dust Issues For The Joint Light Tactical Vehicle (JLTV)

    DTIC Science & Technology

    2012-05-01

    testing at Yuma and other places, the JLTV is filling up with dust and people are having a difficult time seeing and breathing. Obviously, a bad ...2012 Approved for public release; distribution is unlimited. NOTICES Disclaimers The...Citation of manufacturer’s or trade names does not constitute an official endorsement or approval of the use thereof. Destroy this report when it is

  17. A 3D Laser Profiling System for Rail Surface Defect Detection

    PubMed Central

    Li, Qingquan; Mao, Qingzhou; Zou, Qin

    2017-01-01

    Rail surface defects such as the abrasion, scratch and peeling often cause damages to the train wheels and rail bearings. An efficient and accurate detection of rail defects is of vital importance for the safety of railway transportation. In the past few decades, automatic rail defect detection has been studied; however, most developed methods use optic-imaging techniques to collect the rail surface data and are still suffering from a high false recognition rate. In this paper, a novel 3D laser profiling system (3D-LPS) is proposed, which integrates a laser scanner, odometer, inertial measurement unit (IMU) and global position system (GPS) to capture the rail surface profile data. For automatic defect detection, first, the deviation between the measured profile and a standard rail model profile is computed for each laser-imaging profile, and the points with large deviations are marked as candidate defect points. Specifically, an adaptive iterative closest point (AICP) algorithm is proposed to register the point sets of the measured profile with the standard rail model profile, and the registration precision is improved to the sub-millimeter level. Second, all of the measured profiles are combined together to form the rail surface through a high-precision positioning process with the IMU, odometer and GPS data. Third, the candidate defect points are merged into candidate defect regions using the K-means clustering. At last, the candidate defect regions are classified by a decision tree classifier. Experimental results demonstrate the effectiveness of the proposed laser-profiling system in rail surface defect detection and classification. PMID:28777323

  18. Investigation of rail irregularity effects on wheel/rail dynamic force in slab track: Comparison of two and three dimensional models

    NASA Astrophysics Data System (ADS)

    Sadeghi, Javad; Khajehdezfuly, Amin; Esmaeili, Morteza; Poorveis, Davood

    2016-07-01

    Rail irregularity is one of the most significant load amplification factors in railway track systems. In this paper, the capability and effectiveness of the two main railway slab tracks modeling techniques in prediction of the influences of rail irregularities on the Wheel/Rail Dynamic Force (WRDF) were investigated. For this purpose, two 2D and 3D numerical models of vehicle/discontinuous slab track interaction were developed. The validation of the numerical models was made by comparing the results of the models with those obtained from comprehensive field tests carried out in this research. The effects of the harmonic and non-harmonic rail irregularities on the WRDF obtained from 3D and 2D models were investigated. The results indicate that the difference between WRDF obtained from 2D and 3D models is negligible when the irregularities on the right and left rails are the same. However, as the difference between irregularities of the right and left rails increases, the results obtained from 2D and 3D models are considerably different. The results indicate that 2D models have limitations in prediction of WRDF; that is, a 3D modeling technique is required to predict WRDF when there is uneven or non-harmonic irregularity with large amplitudes. The size and extent of the influences of rail irregularities on the wheel/rail forces were discussed leading to provide a better understanding of the rail-wheel contact behavior and the required techniques for predicting WRDF.

  19. Concepts and procedures required for successful reduction of tensor magnetic gradiometer data obtained from an unexploded ordnance detection demonstration at Yuma Proving Grounds, Arizona

    USGS Publications Warehouse

    Bracken, Robert E.; Brown, Philip J.

    2006-01-01

    On March 12, 2003, data were gathered at Yuma Proving Grounds, in Arizona, using a Tensor Magnetic Gradiometer System (TMGS). This report shows how these data were processed and explains concepts required for successful TMGS data reduction. Important concepts discussed include extreme attitudinal sensitivity of vector measurements, low attitudinal sensitivity of gradient measurements, leakage of the common-mode field into gradient measurements, consequences of thermal drift, and effects of field curvature. Spatial-data collection procedures and a spin-calibration method are addressed. Discussions of data-reduction procedures include tracking of axial data by mathematically matching transfer functions among the axes, derivation and application of calibration coefficients, calculation of sensor-pair gradients, thermal-drift corrections, and gradient collocation. For presentation, the magnetic tensor at each data station is converted to a scalar quantity, the I2 tensor invariant, which is easily found by calculating the determinant of the tensor. At important processing junctures, the determinants for all stations in the mapped area are shown in shaded relief map-view. Final processed results are compared to a mathematical model to show the validity of the assumptions made during processing and the reasonableness of the ultimate answer obtained.

  20. 76 FR 81011 - Notice of Final Federal Agency Actions on Proposed Light Rail Project in Washington

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-27

    ... on Proposed Light Rail Project in Washington AGENCY: Federal Highway Administration (FHWA... Light Rail Transit Project in King County Washington. These actions grant licenses, permits, and... Light Rail Transit Project, King County, WA. Federal Lead Agency: Federal Transit Administration (FTA...

  1. In-Service Performance and Costs of Methods for Control of Urban Rail System Noise : Experimental Design

    DOT National Transportation Integrated Search

    1976-05-01

    This report presents an experimental design for a project to evaluate four techniques for reducing wheel-rail noise on urban rail transit systems: (a) resilient wheels, (b) damped wheels, (c) wheel truing, and (d) rail griding. The design presents th...

  2. 75 FR 32240 - Draft Tier II Environmental Impact Statement: Southeast High Speed Rail Corridor-Richmond, VA...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-07

    ... Rail and Public Transportation (DRPT) are co-lead State agencies. The Environmental Protection Agency... 27699-1553, or SEHSR Comments, Virginia Department of Rail and Public Transportation, 600 East Main... Ms. Christine Fix, Virginia Department of Rail & Public Transportation, 600 East Main Street, Suite...

  3. 78 FR 33393 - Petition Requesting a Ban or Standard on Adult Portable Bed Rails

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-04

    ... Standard on Adult Portable Bed Rails AGENCY: Consumer Product Safety Commission. ACTION: Notice. SUMMARY... adult portable bed rails pose an unreasonable risk of injury and initiate related rulemaking under... that adult portable bed rails pose an unreasonable risk of injury and initiate related rulemaking under...

  4. 46 CFR 177.900 - Deck rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... rails must be designed and constructed to withstand a point load of 91 kilograms (200 pounds) applied at... simultaneously. (c) Where space limitations make deck rails impractical for areas designed for crew use only...) high. (4) While engaged in big game angling, the minimum rail height may be reduced to not less than...

  5. 46 CFR 177.900 - Deck rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... rails must be designed and constructed to withstand a point load of 91 kilograms (200 pounds) applied at... simultaneously. (c) Where space limitations make deck rails impractical for areas designed for crew use only...) high. (4) While engaged in big game angling, the minimum rail height may be reduced to not less than...

  6. 46 CFR 177.900 - Deck rails.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... rails must be designed and constructed to withstand a point load of 91 kilograms (200 pounds) applied at... simultaneously. (c) Where space limitations make deck rails impractical for areas designed for crew use only...) high. (4) While engaged in big game angling, the minimum rail height may be reduced to not less than...

  7. 46 CFR 177.900 - Deck rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... rails must be designed and constructed to withstand a point load of 91 kilograms (200 pounds) applied at... simultaneously. (c) Where space limitations make deck rails impractical for areas designed for crew use only...) high. (4) While engaged in big game angling, the minimum rail height may be reduced to not less than...

  8. 46 CFR 177.900 - Deck rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... rails must be designed and constructed to withstand a point load of 91 kilograms (200 pounds) applied at... simultaneously. (c) Where space limitations make deck rails impractical for areas designed for crew use only...) high. (4) While engaged in big game angling, the minimum rail height may be reduced to not less than...

  9. 30 CFR 56.9102 - Movement of independently operating rail equipment.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Movement of independently operating rail... MINES Loading, Hauling, and Dumping Traffic Safety § 56.9102 Movement of independently operating rail equipment. Movement of two or more pieces of rail equipment operating independently on the same track shall...

  10. 30 CFR 57.9102 - Movement of independently operating rail equipment.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Movement of independently operating rail... NONMETAL MINES Loading, Hauling, and Dumping Traffic Safety § 57.9102 Movement of independently operating rail equipment. Movement of two or more pieces of rail equipment operating independently on the same...

  11. 75 FR 16564 - High-Speed Intercity Passenger Rail (HSIPR) Program

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-01

    ... services to avoid shipping delays. Application forms are available at http://www.fra.dot.gov/Pages/2243..., and 501--Intercity Passenger Rail Service Corridor Capital Assistance (codified at 49 U.S.C. chapter... High Speed Rail Corridors and Intercity Passenger Rail Service.'' This document incorporates interim...

  12. Near-rail yard air quality--assessment through field measurements and computational fluid dynamics modeling

    EPA Science Inventory

    Compared to truck transport, goods movement by rail produces generally lower air pollutant emissions (e.g., particulate matter, carbon dioxide) per ton of freight transported. Emissions associated with rail transport are also confined to rail corridors which may lower the risk of...

  13. Evaluation of intrusion detection technologies for high speed rail grade crossings : final report.

    DOT National Transportation Integrated Search

    2003-12-01

    The rail industry is in the process of developing a prototype system for high speed rail. One of the concerns when using high speed rail is the danger of obstructions on the track. This level of danger is much higher than with traditional railway veh...

  14. 29 CFR 1918.36 - Weather deck rails.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 7 2010-07-01 2010-07-01 false Weather deck rails. 1918.36 Section 1918.36 Labor... (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Working Surfaces § 1918.36 Weather deck rails. Removable weather deck rails shall be kept in place except when cargo operations require them to be removed...

  15. 29 CFR 1918.36 - Weather deck rails.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 7 2012-07-01 2012-07-01 false Weather deck rails. 1918.36 Section 1918.36 Labor... (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Working Surfaces § 1918.36 Weather deck rails. Removable weather deck rails shall be kept in place except when cargo operations require them to be removed...

  16. 29 CFR 1918.36 - Weather deck rails.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 7 2014-07-01 2014-07-01 false Weather deck rails. 1918.36 Section 1918.36 Labor... (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Working Surfaces § 1918.36 Weather deck rails. Removable weather deck rails shall be kept in place except when cargo operations require them to be removed...

  17. 29 CFR 1918.36 - Weather deck rails.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 7 2013-07-01 2013-07-01 false Weather deck rails. 1918.36 Section 1918.36 Labor... (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Working Surfaces § 1918.36 Weather deck rails. Removable weather deck rails shall be kept in place except when cargo operations require them to be removed...

  18. 29 CFR 1918.36 - Weather deck rails.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 7 2011-07-01 2011-07-01 false Weather deck rails. 1918.36 Section 1918.36 Labor... (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR LONGSHORING Working Surfaces § 1918.36 Weather deck rails. Removable weather deck rails shall be kept in place except when cargo operations require them to be removed...

  19. 76 FR 80448 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-23

    ...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the first quarter 2012 rail cost adjustment factor (RCAF... decision, which is available on our Web site, http://www.stb.dot.gov . Copies of the decision may be...

  20. 77 FR 58910 - Quarterly Rail Cost Adjustment Factor

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-24

    ..., http://www.stb.dot.gov . Copies of the decision may be purchased by contacting the Office of Public...)] Quarterly Rail Cost Adjustment Factor AGENCY: Surface Transportation Board. ACTION: Approval of rail cost adjustment factor. SUMMARY: The Board has approved the fourth quarter 2012 rail cost adjustment factor (RCAF...

  1. 49 CFR 174.82 - General requirements for the handling of placarded rail cars, transport vehicles, freight...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... rail cars, transport vehicles, freight containers, and bulk packages. 174.82 Section 174.82... Placarded Rail Cars, Transport Vehicles and Freight Containers § 174.82 General requirements for the handling of placarded rail cars, transport vehicles, freight containers, and bulk packages. (a) Unless...

  2. 46 CFR 116.920 - Storm rails.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Storm rails. 116.920 Section 116.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS CARRYING MORE THAN 150... and Guards § 116.920 Storm rails. Suitable storm rails or hand grabs must be installed where necessary...

  3. 46 CFR 116.920 - Storm rails.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Storm rails. 116.920 Section 116.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS CARRYING MORE THAN 150... and Guards § 116.920 Storm rails. Suitable storm rails or hand grabs must be installed where necessary...

  4. 46 CFR 116.920 - Storm rails.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Storm rails. 116.920 Section 116.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS CARRYING MORE THAN 150... and Guards § 116.920 Storm rails. Suitable storm rails or hand grabs must be installed where necessary...

  5. 46 CFR 116.920 - Storm rails.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Storm rails. 116.920 Section 116.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS CARRYING MORE THAN 150... and Guards § 116.920 Storm rails. Suitable storm rails or hand grabs must be installed where necessary...

  6. 46 CFR 116.920 - Storm rails.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Storm rails. 116.920 Section 116.920 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL PASSENGER VESSELS CARRYING MORE THAN 150... and Guards § 116.920 Storm rails. Suitable storm rails or hand grabs must be installed where necessary...

  7. 49 CFR 212.233 - Apprentice highway-rail grade crossing inspector.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Apprentice highway-rail grade crossing inspector... Inspection Personnel § 212.233 Apprentice highway-rail grade crossing inspector. (a) An apprentice highway... Administrator for Safety leading to qualification as a highway-rail grade crossing inspector. The apprentice...

  8. 49 CFR 392.12 - Highway-rail crossings; safe clearance.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 5 2013-10-01 2013-10-01 false Highway-rail crossings; safe clearance. 392.12... DRIVING OF COMMERCIAL MOTOR VEHICLES Driving of Commercial Motor Vehicles § 392.12 Highway-rail crossings; safe clearance. No driver of a commercial motor vehicle shall drive onto a highway-rail grade crossing...

  9. 49 CFR 212.233 - Apprentice highway-rail grade crossing inspector.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Apprentice highway-rail grade crossing inspector... Inspection Personnel § 212.233 Apprentice highway-rail grade crossing inspector. (a) An apprentice highway... Administrator for Safety leading to qualification as a highway-rail grade crossing inspector. The apprentice...

  10. 49 CFR 392.12 - Highway-rail crossings; safe clearance.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 5 2014-10-01 2014-10-01 false Highway-rail crossings; safe clearance. 392.12... DRIVING OF COMMERCIAL MOTOR VEHICLES Driving of Commercial Motor Vehicles § 392.12 Highway-rail crossings; safe clearance. No driver of a commercial motor vehicle shall drive onto a highway-rail grade crossing...

  11. 49 CFR 212.233 - Apprentice highway-rail grade crossing inspector.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Apprentice highway-rail grade crossing inspector... Inspection Personnel § 212.233 Apprentice highway-rail grade crossing inspector. (a) An apprentice highway... Administrator for Safety leading to qualification as a highway-rail grade crossing inspector. The apprentice...

  12. 49 CFR 212.233 - Apprentice highway-rail grade crossing inspector.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Apprentice highway-rail grade crossing inspector... Inspection Personnel § 212.233 Apprentice highway-rail grade crossing inspector. (a) An apprentice highway... Administrator for Safety leading to qualification as a highway-rail grade crossing inspector. The apprentice...

  13. 49 CFR 212.233 - Apprentice highway-rail grade crossing inspector.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Apprentice highway-rail grade crossing inspector... Inspection Personnel § 212.233 Apprentice highway-rail grade crossing inspector. (a) An apprentice highway... Administrator for Safety leading to qualification as a highway-rail grade crossing inspector. The apprentice...

  14. Analyses of rail vehicle dynamics in support of development of the wheel rail dynamics research facility

    DOT National Transportation Integrated Search

    1973-06-30

    The development of experimental facilities for rail vehicle testing at the DOT High Speed Ground Test Center is being complemented by analytical studies. The purpose of this effort has been to gain insight into the dynamics of rail vehicles to guide ...

  15. 78 FR 36823 - California High-Speed Rail Authority-Construction Exemption-in Merced, Madera and Fresno Counties...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-19

    ...-Speed Rail Authority--Construction Exemption--in Merced, Madera and Fresno Counties, Cal AGENCY: Surface...-Speed Rail Authority (Authority) to construct an approximately 65- mile high-speed passenger rail line... statewide California High-Speed Train System. This exemption is subject to environmental mitigation...

  16. 77 FR 69769 - Solid Waste Rail Transfer Facilities

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-21

    .... SUMMARY: These final rules govern land-use-exemption permits for solid waste rail transfer facilities. The... ``land-use-exemption permits'' in certain circumstances. Under the CRA, a solid waste rail transfer... grants a land-use-exemption permit for a solid waste rail transfer facility, such permit would only...

  17. Radial arm strike rail

    DOEpatents

    McKeown, Mark H.; Beason, Steven C.

    1991-01-01

    The radial arm strike rail assembly is a system for measurement of bearings, directions, and stereophotography for geologic mapping, particularly where magnetic compasses are not appropriate. The radial arm, pivoting around a shaft axis, provides a reference direction determination for geologic mapping and bearing or direction determination. The centerable and levelable pedestal provide a base for the radial arm strike rail and the telescoping camera pedestal. The telescoping feature of the radial arm strike rail allows positioning the end of the rail for strike direction or bearing measurement with a goniometer.

  18. Use of a genetic algorithm to improve the rail profile on Stockholm underground

    NASA Astrophysics Data System (ADS)

    Persson, Ingemar; Nilsson, Rickard; Bik, Ulf; Lundgren, Magnus; Iwnicki, Simon

    2010-12-01

    In this paper, a genetic algorithm optimisation method has been used to develop an improved rail profile for Stockholm underground. An inverted penalty index based on a number of key performance parameters was generated as a fitness function and vehicle dynamics simulations were carried out with the multibody simulation package Gensys. The effectiveness of each profile produced by the genetic algorithm was assessed using the roulette wheel method. The method has been applied to the rail profile on the Stockholm underground, where problems with rolling contact fatigue on wheels and rails are currently managed by grinding. From a starting point of the original BV50 and the UIC60 rail profiles, an optimised rail profile with some shoulder relief has been produced. The optimised profile seems similar to measured rail profiles on the Stockholm underground network and although initial grinding is required, maintenance of the profile will probably not require further grinding.

  19. ENVIRONMENTAL ASSESSMENT FOR THE PROPOSED WITHDRAWAL OF PUBLIC LANDS WITHIN AND SURROUNDING THE CALIENTE RAIL CORRIDOR, NEVADA

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    DOE

    2005-12-01

    The purpose for agency action is to preclude surface entry and the location of new mining claims, subject to valid existing rights, within and surrounding the Caliente rail corridor as described in the Yucca Mountain FEIS (DOE 2002). This protective measure is needed to enhance the safe, efficient, and uninterrupted evaluation of land areas for potential rail alignments within the Caliente rail corridor. The evaluation will assist the DOE in determining, through the Rail Alignment environmental impact statement (EIS) process, whether to construct a branch rail line, and to provide support to the BLM in deciding whether or not tomore » reserve a ROW for the rail line under the Federal Land Policy and Management Act (FLPMA). The BLM participated as a cooperating agency in preparing this EA because it is the responsible land manager and BLM staff could contribute resource specific expertise.« less

  20. Transfer system

    DOEpatents

    Kurosawa, Kanji; Koga, Bunichiro; Ito, Hideki; Kiriyama, Shigeru; Higuchi, Shizuo

    2003-05-20

    A transport system includes a traveling rail (1) which constitutes a transport route and a transport body (3) which is capable of traveling on the traveling rail in the longitudinal direction of the traveling rail. Flexible drive tubes (5) are arranged on the traveling rail in the longitudinal direction of the traveling rail. The transport body includes a traveling wheel (4) which is capable of rolling on the traveling rail and drive wheels (2) which are capable of rolling on the drive tubes upon receiving the rotational drive power generated by pressure of a pressure medium supplied to the drive tubes while depressing the drive tubes. The traveling rail includes a plurality of transport sections and the transport body is capable of receiving a rotational drive force from the drive tubes at every transport sections. If necessary, a transport route changeover switch which changes over the transport route can be provided between the transport sections.

  1. Assessment of the benefits and costs associated with the adoption of the recommended fire safety practices for rail transit materials selection

    DOT National Transportation Integrated Search

    1982-12-01

    This report presents the results of an assessment of the benefits and costs associated with the adoption of Recommended Fire Safety Practices for Rail Transit Materials Selection for rapid rail transit and light rail transit vehicles. The potential b...

  2. 76 FR 75542 - Rail Splitter Wind Farm, LLC v. Ameren Services Company Midwest Independent Transmission, System...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-02

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. EL12-11-000] Rail Splitter Wind Farm, LLC v. Ameren Services Company Midwest Independent Transmission, System Operator, Inc...) Rules of Practice and Procedures, 18 CFR 385.206, Rail Splitter Wind Farm, LLC (Rail Splitter or...

  3. 29 CFR 1915.72 - Ladders.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... sectional area of the side rail. The dimensions of side rails for their total length shall be those...). (b) Construction of portable wood cleated ladders up to 30 feet in length. (1) Wood side rails shall... than one such pocket appears in each 4 feet of length. (5) The width between side rails at the base...

  4. Near-source air quality in rail yard environments – an overview of recent EPA measurement and modeling findings

    EPA Science Inventory

    This presentation will providing a summary of field measurements conducted in areas surrounding two major rail yards as well as modeling simulations of rail yard emissions dispersion. The Cicero Rail Yard Study (CIRYS) was recently released to the public and includes mobile and ...

  5. 49 CFR 213.122 - Torch cut rail.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Torch cut rail. 213.122 Section 213.122..., DEPARTMENT OF TRANSPORTATION TRACK SAFETY STANDARDS Track Structure § 213.122 Torch cut rail. (a) Except as a temporary repair in emergency situations no rail having a torch cut end shall be used in Classes 3 through 5...

  6. Plans for crash-tested wood bridge railings for concrete decks

    Treesearch

    Michael A. Ritter; Ronald K. Faller; Barry T. Rosson; Paula D. Hilbrich Lee; Sheila Rimal Duwadi

    1998-01-01

    As part of a continuing cooperative research between the Midwest Roadside Safety Facility (MwRSF); the USDA Forest Service, Forest Products Laboratory (FPL); and the Federal Highway Administration (FHWA), several crashworthy wood bridge railings and approach railing transitions have been adapted for use on concrete bridge decks. These railings meet testing and...

  7. 77 FR 2077 - Intent To Request Renewal From OMB of One Current Public Collection of Information: Rail...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-13

    ... carriers, including each carrier operating light rail or heavy rail transit service on track that is part of the general railroad system of transportation and rail transit systems. Also, these persons are... any threat information. In addition, freight railroad carriers and the affected shippers and receivers...

  8. 77 FR 19680 - Extension of Agency Information Collection Activity Under OMB Review: Rail Transportation Security

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-02

    ... receivers of certain hazardous materials; and passenger railroad carriers, including each carrier operating light rail or heavy rail transit service on track that is part of the general railroad system of transportation and rail transit systems. Also, these persons are required to report significant security concerns...

  9. 76 FR 31009 - Iowa Northern Railway Company-Operation Exemption-North Central Iowa Rail Corridor, LLC

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-27

    ... Railway Company--Operation Exemption--North Central Iowa Rail Corridor, LLC Iowa Northern Railway Company...) Docket No. FD 35507, North Central Iowa Rail Corridor, LLC--Acquisition Exemption--Union Pacific Railroad Company, in which North Central Iowa Rail Corridor, LLC seeks to acquire from Union Pacific Railroad...

  10. 49 U.S.C. 22705 - Content

    Code of Federal Regulations, 2010 CFR

    ... 49 U.S.C. United States Code, 2009 Edition Title 49 - TRANSPORTATION SUBTITLE V - RAIL PROGRAMS PART B - ASSISTANCE CHAPTER 227 - STATE RAIL PLANS Sec. 22705 - Content §22705. Content (a) In General .—Each State rail plan shall, at a minimum, contain the following: (1) An inventory of the existing overall rail transportation system an...

  11. 49 U.S.C. 22705 - Content

    Code of Federal Regulations, 2010 CFR

    ... 49 U.S.C. United States Code, 2011 Edition Title 49 - TRANSPORTATION SUBTITLE V - RAIL PROGRAMS PART B - ASSISTANCE CHAPTER 227 - STATE RAIL PLANS Sec. 22705 - Content §22705. Content (a) In General .—Each State rail plan shall, at a minimum, contain the following: (1) An inventory of the existing overall rail transportation system an...

  12. 49 U.S.C. 22705 - Content

    Code of Federal Regulations, 2010 CFR

    ... 49 U.S.C. United States Code, 2014 Edition Title 49 - TRANSPORTATION SUBTITLE V - RAIL PROGRAMS PART B - ASSISTANCE CHAPTER 227 - STATE RAIL PLANS Sec. 22705 - Content §22705. Content (a) In General .—Each State rail plan shall, at a minimum, contain the following: (1) An inventory of the existing overall rail transportation system an...

  13. 75 FR 39326 - Environmental Impact Statement for the Proposed Implementation of Rail Passenger Service on the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-08

    ... Proposed Implementation of Rail Passenger Service on the Cotton Belt Corridor AGENCY: Federal Transit... service on the 26-mile long Cotton Belt Corridor from Dallas-Fort Worth International Airport (DFWIA) in... primary purpose of the Cotton Belt Corridor Regional Rail Project is to provide passenger rail connections...

  14. 76 FR 41859 - Waiver Petition Docket Numbers FRA-2011-0002, CSX Transportation Railroad, and FRA-2004-17565...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-15

    ... FR 10087) announcing the CSX Transportation Railroad's (CSXT) request for a waiver to operate RailRunner equipment in RailRunner only operations; operate RailRunner equipment commingled with RoadRailer bi-modal equipment; and RailRunner equipment operating behind various conventional railcars. On...

  15. 49 CFR 213.122 - Torch cut rail.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Torch cut rail. 213.122 Section 213.122..., DEPARTMENT OF TRANSPORTATION TRACK SAFETY STANDARDS Track Structure § 213.122 Torch cut rail. (a) Except as a temporary repair in emergency situations no rail having a torch cut end shall be used in Classes 3 through 5...

  16. 49 CFR 214.521 - Flagging equipment for on-track roadway maintenance machines and hi-rail vehicles.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... maintenance machines and hi-rail vehicles. 214.521 Section 214.521 Transportation Other Regulations Relating... WORKPLACE SAFETY On-Track Roadway Maintenance Machines and Hi-Rail Vehicles § 214.521 Flagging equipment for on-track roadway maintenance machines and hi-rail vehicles. Each on-track roadway maintenance machine...

  17. 49 CFR 234.11 - State highway-rail grade crossing action plans.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false State highway-rail grade crossing action plans... PLANS Reports and Plans § 234.11 State highway-rail grade crossing action plans. (a) Purpose. The purpose of this section is to reduce collisions at highway-rail grade crossings in the ten States that...

  18. 49 CFR 234.11 - State highway-rail grade crossing action plans.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false State highway-rail grade crossing action plans... PLANS Reports and Plans § 234.11 State highway-rail grade crossing action plans. (a) Purpose. The purpose of this section is to reduce collisions at highway-rail grade crossings in the ten States that...

  19. 76 FR 17615 - Highway-Rail Grade Crossing; Safe Clearance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-30

    ...-2006-25660] RIN 2137-AE69 & 2126-AB04 Highway-Rail Grade Crossing; Safe Clearance AGENCY: Pipeline and... PHMSA and FMCSA extend the comment period for the Highway-Rail Grade Crossing; Safe Clearance Notice of... Alliance (CVSA) requested that PHMSA and FMCSA extend the comment period for the Highway-Rail Grade...

  20. 75 FR 26839 - Metrics and Standards for Intercity Passenger Rail Service under Section 207 of the Passenger...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-12

    ... performance and service quality of intercity passenger train operations. In compliance with the statute, the FRA and Amtrak jointly drafted performance metrics and standards for intercity passenger rail service... and Standards for Intercity Passenger Rail Service under Section 207 of the Passenger Rail Investment...

  1. 49 CFR 213.139 - Spring rail frogs.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Spring rail frogs. 213.139 Section 213.139..., DEPARTMENT OF TRANSPORTATION TRACK SAFETY STANDARDS Track Structure § 213.139 Spring rail frogs. (a) The outer edge of a wheel tread shall not contact the gage side of a spring wing rail. (b) The toe of each...

  2. 49 CFR 213.139 - Spring rail frogs.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Spring rail frogs. 213.139 Section 213.139..., DEPARTMENT OF TRANSPORTATION TRACK SAFETY STANDARDS Track Structure § 213.139 Spring rail frogs. (a) The outer edge of a wheel tread shall not contact the gage side of a spring wing rail. (b) The toe of each...

  3. 49 CFR 213.139 - Spring rail frogs.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Spring rail frogs. 213.139 Section 213.139..., DEPARTMENT OF TRANSPORTATION TRACK SAFETY STANDARDS Track Structure § 213.139 Spring rail frogs. (a) The outer edge of a wheel tread shall not contact the gage side of a spring wing rail. (b) The toe of each...

  4. 49 CFR 213.139 - Spring rail frogs.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Spring rail frogs. 213.139 Section 213.139..., DEPARTMENT OF TRANSPORTATION TRACK SAFETY STANDARDS Track Structure § 213.139 Spring rail frogs. (a) The outer edge of a wheel tread shall not contact the gage side of a spring wing rail. (b) The toe of each...

  5. 49 CFR 213.139 - Spring rail frogs.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Spring rail frogs. 213.139 Section 213.139..., DEPARTMENT OF TRANSPORTATION TRACK SAFETY STANDARDS Track Structure § 213.139 Spring rail frogs. (a) The outer edge of a wheel tread shall not contact the gage side of a spring wing rail. (b) The toe of each...

  6. 78 FR 28940 - Environmental Impact Statement for the Atlanta to Charlotte Portion of the Southeast High Speed...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-16

    ... the Atlanta to Charlotte Portion of the Southeast High Speed Rail Corridor AGENCY: Federal Rail... potential passenger rail improvements between Atlanta, GA and Charlotte, NC, along the Southeast High-Speed... federal High-Speed Intercity Passenger Rail (HSIPR) program and includes the development of a Passenger...

  7. 78 FR 24309 - California High-Speed Rail Authority-Construction Exemption-in Merced, Madera and Fresno Counties...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-24

    ...-Speed Rail Authority--Construction Exemption--in Merced, Madera and Fresno Counties, Cal On March 27, 2013, California High-Speed Rail Authority (Authority), a noncarrier state agency, filed a petition for... construct an approximately 65-mile dedicated high-speed passenger rail line between Merced and Fresno...

  8. 77 FR 64249 - Track Safety Standards; Improving Rail Integrity

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-19

    ... specific problems. This is a result of high traffic volumes that load the rail and accelerate defect growth... influenced by tonnage. Rapid growth rates can also be associated with rail where high-tensile residual stresses are present in the railhead and in CWR in lower temperature ranges where the rail is in high...

  9. MASH Test 3-11 on the T131RC Bridge Rail

    DOT National Transportation Integrated Search

    2012-10-01

    Texas Department of Transportation (TxDOT) currently uses the TxDOT Type T101RC Bridge Rail, : a steel post and beam bridge rail anchored to the top of concrete curbs. The T101RC Bridge Rail is : 27 inches in height and can be anchored to the top of ...

  10. Multiple stage railgun

    DOEpatents

    Hawke, Ronald S.; Scudder, Jonathan K.; Aaland, Kristian

    1982-01-01

    A multiple stage magnetic railgun accelerator (10) for accelerating a projectile (15) by movement of a plasma arc (13) along the rails (11,12). The railgun (10) is divided into a plurality of successive rail stages (10a-n) which are sequentially energized by separate energy sources (14a-n) as the projectile (15) moves through the bore (17) of the railgun (10). Propagation of energy from an energized rail stage back towards the breech end (29) of the railgun (10) can be prevented by connection of the energy sources (14a-n) to the rails (11,12) through isolation diodes (34a-n). Propagation of energy from an energized rail stage back towards the breech end of the railgun can also be prevented by dividing the rails (11,12) into electrically isolated rail sections (11a-n, 12a-n). In such case means (55a-n) are used to extinguish the arc at the end of each energized stage and a fuse (31) or laser device (61) is used to initiate a new plasma arc in the next energized rail stage.

  11. Difference in rural and urban driver-injury severities in highway-rail grade crossing accidents.

    PubMed

    Hao, Wei; Kamga, Camille

    2017-06-01

    Based on the Federal Railway Administration (FRA) database, there were 25,945 highway-rail crossing accidents in the United States between 2002 and 2011. With an extensive research, analysis results showed that there were substantial differences between rural and urban areas at highway-rail grade crossings. However, there is no published study specific on driver's injury severity at highway-rail grade crossings classified by area types. Using an ordered probit modelling approach, the study explores the determinants of driver-injury severity at rural highway-rail grade crossings compared with urban highway-rail grade crossings. The analysis found that motor vehicle driver's injury level at rural highway-rail grade crossing is extremely higher than urban area. Compared to collisions at urban area, collisions happened at rural area tend to result in more severe injuries. These crashes were more prevalent if vehicle drivers are driving at a high speed or the oncoming trains are high-speed. Moreover, highway-rail grade crossing accidents were more likely to occur at rural area without pavement and lighting.

  12. A novel rail defect detection method based on undecimated lifting wavelet packet transform and Shannon entropy-improved adaptive line enhancer

    NASA Astrophysics Data System (ADS)

    Hao, Qiushi; Zhang, Xin; Wang, Yan; Shen, Yi; Makis, Viliam

    2018-07-01

    Acoustic emission (AE) technology is sensitive to subliminal rail defects, however strong wheel-rail contact rolling noise under high-speed condition has gravely impeded detecting of rail defects using traditional denoising methods. In this context, the paper develops an adaptive detection method for rail cracks, which combines multiresolution analysis with an improved adaptive line enhancer (ALE). To obtain elaborate multiresolution information of transient crack signals with low computational cost, lifting scheme-based undecimated wavelet packet transform is adopted. In order to feature the impulsive property of crack signals, a Shannon entropy-improved ALE is proposed as a signal enhancing approach, where Shannon entropy is introduced to improve the cost function. Then a rail defect detection plan based on the proposed method for high-speed condition is put forward. From theoretical analysis and experimental verification, it is demonstrated that the proposed method has superior performance in enhancing the rail defect AE signal and reducing the strong background noise, offering an effective multiresolution approach for rail defect detection under high-speed and strong-noise condition.

  13. New magnetic rails with double-layer Halbach structure by employing NdFeB and ferrite magnets for HTS maglev

    NASA Astrophysics Data System (ADS)

    Sun, Ruixue; Zheng, Jun; Zheng, Botian; Qian, Nan; Li, Jipeng; Deng, Zigang

    2018-01-01

    In the high temperature superconducting (HTS) maglev system, the magnetic rail as an essential infrastructure is needed all along the route to carry passengers and goods to the destinations. Thus, large amount of rare earth magnetic materials are required in the magnetic rail construction. In order to decrease the dependence of magnetic rails on rare earth elements, the ferrite magnet is employed to replace part of the NdFeB magnets containing rare earth elements. Consequently, a new type rail with double-layer Halbach structure is presented, which is consisted of NdFeB and ferrite magnets. In this paper, we designed and fabricated the proposed rail, and further measured its magnetic flux density distribution and electromagnetic force interacting with HTS bulks. Experimental results indicate that, this new type rail, in double-layer Halbach structure, can achieve an equivalent distribution of magnetic flux density and levitation performance as the pure NdFeB Halbach rail, while a 10% reduction in NdFeB magnet consumption can be realized at the same time. In addition this work explores another magnetic material selection for HTS maglev applications. The dependence on rare earth element and the cost of magnetic rails can be further reduced, as the coercive force of ferrite magnets improved.

  14. Wear-caused deflection evolution of a slide rail, considering linear and non-linear wear models

    NASA Astrophysics Data System (ADS)

    Kim, Dongwook; Quagliato, Luca; Park, Donghwi; Murugesan, Mohanraj; Kim, Naksoo; Hong, Seokmoo

    2017-05-01

    The research presented in this paper details an experimental-numerical approach for the quantitative correlation between wear and end-point deflection in a slide rail. Focusing the attention on slide rail utilized in white-goods applications, the aim is to evaluate the number of cycles the slide rail can operate, under different load conditions, before it should be replaced due to unacceptable end-point deflection. In this paper, two formulations are utilized to describe the wear: Archard model for the linear wear and Lemaitre damage model for the nonlinear wear. The linear wear gradually reduces the surface of the slide rail whereas the nonlinear one accounts for the surface element deletion (i.e. due to pitting). To determine the constants to use in the wear models, simple tension test and sliding wear test, by utilizing a designed and developed experiment machine, have been carried out. A full slide rail model simulation has been implemented in ABAQUS including both linear and non-linear wear models and the results have been compared with those of the real rails under different load condition, provided by the rail manufacturer. The comparison between numerically estimated and real rail results proved the reliability of the developed numerical model, limiting the error in a ±10% range. The proposed approach allows predicting the displacement vs cycle curves, parametrized for different loads and, based on a chosen failure criterion, to predict the lifetime of the rail.

  15. Rail-dbGaP: analyzing dbGaP-protected data in the cloud with Amazon Elastic MapReduce.

    PubMed

    Nellore, Abhinav; Wilks, Christopher; Hansen, Kasper D; Leek, Jeffrey T; Langmead, Ben

    2016-08-15

    Public archives contain thousands of trillions of bases of valuable sequencing data. More than 40% of the Sequence Read Archive is human data protected by provisions such as dbGaP. To analyse dbGaP-protected data, researchers must typically work with IT administrators and signing officials to ensure all levels of security are implemented at their institution. This is a major obstacle, impeding reproducibility and reducing the utility of archived data. We present a protocol and software tool for analyzing protected data in a commercial cloud. The protocol, Rail-dbGaP, is applicable to any tool running on Amazon Web Services Elastic MapReduce. The tool, Rail-RNA v0.2, is a spliced aligner for RNA-seq data, which we demonstrate by running on 9662 samples from the dbGaP-protected GTEx consortium dataset. The Rail-dbGaP protocol makes explicit for the first time the steps an investigator must take to develop Elastic MapReduce pipelines that analyse dbGaP-protected data in a manner compliant with NIH guidelines. Rail-RNA automates implementation of the protocol, making it easy for typical biomedical investigators to study protected RNA-seq data, regardless of their local IT resources or expertise. Rail-RNA is available from http://rail.bio Technical details on the Rail-dbGaP protocol as well as an implementation walkthrough are available at https://github.com/nellore/rail-dbgap Detailed instructions on running Rail-RNA on dbGaP-protected data using Amazon Web Services are available at http://docs.rail.bio/dbgap/ : anellore@gmail.com or langmea@cs.jhu.edu Supplementary data are available at Bioinformatics online. © The Author 2016. Published by Oxford University Press.

  16. Driver injury severity related to inclement weather at highway-rail grade crossings in the United States.

    PubMed

    Hao, Wei; Daniel, Janice

    2016-01-01

    Previous studies on crash modeling at highway-rail grade crossings were aimed at exploring the factors that are likely to increase the crash frequencies at highway-rail grade crossings. In recent years, modeling driver's injury severity at highway-rail grade crossings has received interest. Because there were substantial differences among different weather conditions for driver's injury severity, this study attempts to explore the impact of weather influence on driver injury at highway-rail grade crossing. Utilizing the most recent 10 years (2002-2011) of highway-rail grade crossing accident data, this study applied a mixed logit model to explore the determinants of driver injury severity under different weather conditions at highway-rail grade crossing. Analysis results indicate that drivers' injury severity at highway-rail grade crossings is strongly different for different weather conditions. It was found that the factors significantly impacting driver injury severity at highway-rail grade crossings include motor vehicle speed, train speed, driver's age, gender, area type, lighting condition, highway pavement, traffic volume, and time of day. The findings of this study indicate that crashes are more prevalent if vehicle drivers are driving at high speed or the oncoming trains are high speed. Hence, a reduction in speed limit during inclement weather conditions could be particularly effective in moderating injury severity, allowing more reaction time for last-minute maneuvering and braking in moments before impacts. In addition, inclement weather-related crashes were more likely to occur in open areas and highway-rail grade crossings without pavement and lighting. Paved highway-rail grade crossings with installation of lights could be particularly effective in moderating injury severity.

  17. 77 FR 23806 - Manning Rail, Inc.-Acquisition and Operation Exemption-Manning Grain Company

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-20

    ... DEPARTMENT OF TRANSPORTATION Surface Transportation Board [Docket No. FD 35607] Manning Rail, Inc.--Acquisition and Operation Exemption--Manning Grain Company Manning Rail, Inc. (MRI), a noncarrier, has filed a verified notice of exemption \\1\\ under 49 CFR 1150.31 to acquire from Manning Grain Company (MGC) and operate a 7.1-mile rail line...

  18. 77 FR 49854 - Tier 1 Environmental Impact Statement for the Oregon Portion of the Pacific Northwest Rail...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-17

    ... represents other transportation modes such as auto, air travel, intercity bus, and existing rail and the... well as making decisions regarding the level of intercity passenger rail service provided in the... growth of 139% between 2000 and 2008. Current intercity passenger rail service in Oregon includes two...

  19. 2009 rail safety statistics report : an analysis of safety data reported by state safety oversight agencies and rail transit agencies for the years 2003-2008

    DOT National Transportation Integrated Search

    2010-01-01

    In calendar year 2008, the rail transit industry provided over 18.5 billion passenger : miles, a 5% increase from 2007 service numbers. Growth in ridership at the rail : transit agencies in the Federal Transit Administrations (FTA) State Safety Ov...

  20. 36 CFR 1192.175 - High-speed rail cars, monorails and systems.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false High-speed rail cars... TRANSPORTATION VEHICLES Other Vehicles and Systems § 1192.175 High-speed rail cars, monorails and systems. (a) All cars for high-speed rail systems, including but not limited to those using “maglev” or high speed...

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