Sample records for grandes bagres siluriformes

  1. Cucullanus costaricensis n. sp. (Nematoda: Cucullanidae), a parasite of Bagre pinnimaculatus (Siluriformes: Ariidae) from Río Tempisque, Costa Rica.

    PubMed

    López-Caballero, Jorge; Osorio-Sarabia, David; García-Prieto, Luis

    2009-04-01

    A new species of nematode, Cucullanus costaricensis n. sp., is described from the Red Sea catfish Bagre pinnimaculatus from Río Tempisque, Costa Rica. The new species is characterized by the following traits: spicules and gubernaculum length (0.48 +/- 0.02 [0.45-0.50] and 0.20 +/- 0.02 [0.18-0.21], respectively); a protruding cloacal region in males, and the arrangement of caudal papillae (1 medial unpaired precloacal papilla and 10 pairs of papillae: 3 precloacals [first pair subventral and anterior to ventral sucker; second and third pairs posterior to ventral sucker; second pair asymmetric and subventral; third pair slightly subventral and closer to cloacal opening], 3 subventral adcloacal pairs [pairs 4-6], and 4 pairs of postcloacal papillae [seventh pair lateral, eighth pair subdorsal, ninth and tenth pairs subventral]); and lateral phasmids between the seventh and eighth pairs of postcloacal papillae. This finding represents the first record for a species of Cucullanus in Central America. PMID:18842070

  2. Evidence of Niche Partitioning under Ontogenetic Influences among Three Morphologically Similar Siluriformes in Small Subtropical Streams

    PubMed Central

    Bonato, Karine Orlandi; Fialho, Clarice Bernhardt

    2014-01-01

    Ontogenetic influences in patterns of niche breadth and feeding overlap were investigated in three species of Siluriformes (Heptapterus sp., Rhamdia quelen and Trichomycterus poikilos) aiming at understanding the species coexistence. Samplings were conducted bimonthly by electrofishing technique from June/2012 to June/2013 in ten streams of the northwestern state of Rio Grande do Sul, Brazil. The stomach contents of 1,948 individuals were analyzed by volumetric method, with 59 food items identified. In general Heptapterus sp. consumed a high proportion of Aegla sp., terrestrial plant remains and Megaloptera; R. quelen consumed fish, and Oligochaeta, followed by Aegla sp.; while the diet of T. poikilos was based on Simuliidae, Ephemeroptera and Trichoptera. Specie segregation was observed in the NMDS. Through PERMANOVA analysis feeding differences among species, and between a combination of species plus size classes were observed. IndVal showed which items were indicators of these differences. Niche breadth values were high for all species. The niche breadth values were low only for the larger size of R. quelen and Heptapterus sp. while T. poikilos values were more similar. Overall the species were a low feeding overlap values. The higher frequency of high feeding overlap was observed for interaction between Heptapterus sp. and T. poikilos. The null model confirmed the niche partitioning between the species. The higher frequency of high and intermediate feeding overlap values were reported to smaller size classes. The null model showed resource sharing between the species/size class. Therefore, overall species showed a resource partitioning because of the use of occasional items. However, these species share resources mainly in the early ontogenetic stages until the emphasized change of morphological characteristics leading to trophic niche expansion and the apparent segregation observed. PMID:25340614

  3. Trophic ecomorphology of Siluriformes (Pisces, Osteichthyes) from a tropical stream.

    PubMed

    Pagotto, J P A; Goulart, E; Oliveira, E F; Yamamura, C B

    2011-05-01

    The present study analysed the relationship between morphology and trophic structure of Siluriformes (Pisces, Osteichthyes) from the Caracu Stream (22º 45' S and 53º 15' W), a tributary of the Paraná River (Brazil). Sampling was carried out at three sites using electrofishing, and two species of Loricariidae and four of Heptapteridae were obtained. A cluster analysis revealed the presence of three trophic guilds (detritivores, insectivores and omnivores). Principal components analysis demonstrated the segregation of two ecomorphotypes: at one extreme there were the detritivores (Loricariidae) with morphological structures that are fundamental in allowing them to fix themselves to substrates characterised by rushing torrents, thus permitting them to graze on the detritus and organic materials encrusted on the substrate; at the other extreme of the gradient there were the insectivores and omnivores (Heptapteridae), with morphological characteristics that promote superior performance in the exploitation of structurally complex habitats with low current velocity, colonised by insects and plants. Canonical discriminant analysis revealed an ecomorphological divergence between insectivores, which have morphological structures that permit them to capture prey in small spaces among rocks, and omnivores, which have a more compressed body and tend to explore food items deposited in marginal backwater zones. Mantel tests showed that trophic structure was significantly related to the body shape of a species, independently of the phylogenetic history, indicating that, in this case, there was an ecomorphotype for each trophic guild. Therefore, the present study demonstrated that the Siluriformes of the Caracu Stream were ecomorphologically structured and that morphology can be applied as an additional tool in predicting the trophic structure of this group. PMID:21755165

  4. First record of Ameiurus melas (Siluriformes, Ictaluridae) in the Alqueva reservoir, Guadiana basin (Portugal)

    E-print Network

    Marques, Tiago A.

    First record of Ameiurus melas (Siluriformes, Ictaluridae) in the Alqueva reservoir, Guadiana basin and Environmental Modelling, St Andrews, SCOTLAND. R�SUM�. - Premier signalement de Ameiurus melas (Siluri- formes février 2002, créant ainsi un nouvel habitat approprié pour Ameiurus melas. Afin de confirmer et d

  5. First description of B chromosomes in the family Auchenipteridae, Parauchenipterus galeatus (Siluriformes) of the São Francisco River basin (MG, Brazil)

    Microsoft Academic Search

    Roberto Laridondo Lui; Daniel Rodrigues Blanco; Vladimir Pavan Margarido; Orlando Moreira Filho

    2009-01-01

    B chromosomes are considered additional and non-essential; they likely originate from A chromosomes and follow a distinct evolution. In fish, approximately half of the Neotropical species with B chromosomes are Characiformes and 35% are Siluriformes. There has been no report of B chromosomes in Auchenipteridae until this moment. B chromosomes found in a population of Parauchenipterus galeatus from the São

  6. KASCADE-Grande: The Grande Array

    NASA Astrophysics Data System (ADS)

    Chiavassa, A.; Antoni, T.; Apel, W. D.; Badea, F.; Bekk, K.; Bercuci, A.; Bertaina, M.; Blümer, H.; Bozdog, H.; Brancus, I. M.; Brüggermann, M.; Buchholz, P.; Büttner, C.; Doll, P.; Engel, R.; Engler, J.; Feßler, F.; Ghia, P. L.; Gils, H. J.; Haungs, A.; Heck, D.; Hörandel, J. R.; Iwan, A.; Kampert, K-H.; Klages, H. O.; Kolotaev, Y.; Maier, G.; Mathes, H. J.; Mayer, H. J.; Milke, J.; Morello, C.; Müller, M.; Navarra, G.; Obenland, R.; Oehlschläger, J.; Ostapchenko, S.; Petcu, M.; Plewnia, S.; Rebel, H.; Roth, M.; Schieler, H.; Scholz, J.; Thouw, T.; Trinchero, G. C.; Ulrich, H.; Valchierotti, S.; van Buren, J.; Walkowiak, W.; Weindl, A.; Wochele, J.; Zabierowski, J.; Zagromski, S.

    2003-07-01

    . The KASCADE-Grande experiment is starting data taking at Forschungszentrum Karlsruhe, Germany, with the aim of extending the energy range of KASCADE up to E0 ˜ 1018 eV. The new experiment is based on the KASCADE facilities, and two new arrays: Grande and Piccolo, with the respective aims of realizing a large acceptance area and a compact interface triggering system. The characteristics of Grande its performances concerning the dynamic range and timing measurements are presented.

  7. Federal Grand Jury

    NSDL National Science Digital Library

    "Everything about a grand jury is cloaked in secrecy," proclaims Susan Brenner and Greg Lockhart, Professors of Law at the University of Dayton School of Law and co-authors of Federal Grand Jury Practice. At their Website devoted to grand juries, they effectively elucidate the complex rules and processes of both federal and state grand juries. They uncover the mysteries behind the grand jury system by providing a detailed FAQ, two clearly written and illustrated sections on federal and state grand juries, and a highly educational section entitled Multimedia Overview: A State Grand Jury at Work, which is a virtual tour of the grand jury process. For more inquisitive citizens, a selective list of grand jury links is also available.

  8. Grand Canyon University Portland State University Grand Canyon University

    E-print Network

    Caughman, John

    Grand Canyon University Portland State University Grand Canyon University Transfer Worksheet College-level transferable academic courses taken at Grand Canyon University (GCU) will transfer. Academic Major Requirements 2. Degree Requirements (BA, BS) 3. General Education Requirements #12;Grand

  9. GRAND RIVER Winter 2014

    E-print Network

    Thompson, Michael

    GRAND RIVER POST SECONDARY BOARD NEWSLETTER Winter 2014 Issue 55 P.O. Box 339 Ohsweken ON, N0A 1M0-mail: info@grpseo.org Website: www.grpseo.org Grand River Post Secondary Board Members Brenda Davis (Chair TO TOMORROW Onkwehon:we with Grand River Territory lineage are empowered through higher education within

  10. The Grand Staircase

    NSDL National Science Digital Library

    Ronald Blakey

    This website contains visual information about the geologic history of the Grand Staircase region of Arizona and Utah, which comprises the area from the Grand Canyon to Bryce Canyon. There is a brief introduction to the region, a Landsat image of the Grand Canyon, panel cross-sections showing stages of geologic evolution for this area, sectional stratigraphy, stratigraphic columns connecting the different sections, and outcrop photos of the region.

  11. Rio Grande project partnerships

    E-print Network

    Supercinski, Danielle

    2008-01-01

    ?Agricultural Research Service, has ongoing experiments with three biological control agents that feed on the giant reed. In a project funded by RGBI, Dr. Georgianne Moore, Texas A&M University, is working with Goolsby to study effects of these agents on the growth...tx H2O | pg. 18 Rio Grande project partnerships W ater quality and quantity issues in the Rio Grande are nothing new for the Rio Grande Basin. However, the continued activities and projects by several universities and local, state...

  12. Spine anatomy reveals the diversity of catfish through time: a case study of Synodontis (Siluriformes)

    NASA Astrophysics Data System (ADS)

    Pinton, Aurélie; Fara, Emmanuel; Otero, Olga

    2006-01-01

    Synodontis (Mochokidae, Siluriformes) is a freshwater catfish endemic to Africa. The 118 extant species are present in almost all hydrographic basins. Some species are restricted to a single stream, whereas others have a vast distribution. Synodontis is known in the fossil record since the Miocene, and its history depends on the connections among African basins through time. The identification of species in the fossil record is essential to reconstruct this historical pattern. Catfish pectoral and dorsal spines are robust, they preserve well and they form most of the fossil remains for the genus Synodontis. Unfortunately, the criteria for the identification of extant Synodontis species are not applicable to fossil specimens. Here, we define 11 original morphological characters that permit to discriminate four extant species from the Chad-Chari hydrographic system. Six of these characters are defined on pectoral spines and five on dorsal spines. We then show that these characters can be used successfully for identifying fossil specimens. In particular, we present a case study in which we identify Synodontis cf. schall and Brachysynodontis cf. batensoda in the hominid-bearing sector Toros-Menalla (Late Miocene, northern Chad). We show that spine anatomy can be a powerful tool to recognise catfish species through time and thus to identify historical diversity pattern.

  13. Molecular phylogeny and biogeography of air sac catfishes of the Heteropneustes fossilis species complex (Siluriformes: Heteropneustidae).

    PubMed

    Ratmuangkhwang, Sahat; Musikasinthorn, Prachya; Kumazawa, Yoshinori

    2014-10-01

    The air sac catfish, Heteropneustes fossilis (Siluriformes: Heteropneustidae), is widely distributed in freshwaters of the Indian subcontinent and mainland southeast Asia. No comprehensive molecular studies that cover the broad distributional areas have been carried out to date. Here, we conducted molecular phylogenetic analyses using both mitochondrial and nuclear gene sequences to suggest that the Heteropneustes fossilis species complex consists of three clades that may potentially be separate species with distinct geographical distribution (southeast Asia, northeastern India, and southwestern India). The first and second clades are more closely related to each other than they are to the third clade. Within the first clade there is a basal divergence of a subclade consisting of individuals from the Upper Irrawaddy River basin of Myanmar, which share some morphological traits with members of the Indian clades. Our molecular and morphological data are congruent with hypotheses that the Early-Middle Miocene disconnection between the paleo-Tsangpo River and the Irrawaddy River caused the vicariant divergence between southeast Asian and northeastern Indian clades, and that the southeast Asian Heteropneustes originated from the Upper Irrawaddy. PMID:24875251

  14. Cytogenetic study of heptapterids (Teleostei, Siluriformes) with particular respect to the Nemuroglanis subclade

    PubMed Central

    Kantek, Daniel Luis Zanella; Moreira Peres, Wellington Adriano; Moreira-Filho, Orlando

    2015-01-01

    Abstract The catfish family Heptapteridae (order Siluriformes) is endemic to the Neotropics and is one of the most common of the fish families in small bodies of water. Although over 200 species have been identified in this family, very few have been characterized cytogenetically. Here, we analyze the chromosome genomes of four species of Heptapteridae: Cetopsorhamdia iheringi (Schubart & Gomes, 1959), 2n = 58, comprising 28 metacentric (m) + 26 submetacentric (sm) + 4 subtelomeric (st) chromosomes; Pimelodella vittata (Lütken, 1874), 2n = 46, comprising 16m + 22sm + 8st; Rhamdia prope quelen (Quoy & Gaimard, 1824), 2n = 58 comprising 26m + 16sm + 14st + 2 acrocentric; and Rhamdiopsis prope microcephala (Lütken, 1874), 2n = 56, comprising 12m + 30sm + 14st. The nucleolus organizer regions (NORs) were located in a single chromosome pair in all species. The two species that belonged to the subclade Nemuroglanis, Cetopsorhamdia iheringi and Rhamdia prope quelen, had a diploid chromosome number of 58 and an interstitial NOR adjacent to a C+ block located on one of the larger chromosome pairs in the complement. Our results from conventional cytogenetic techniques in combination with FISH using 18S and 5S rDNA probes corroborated the taxonomical hypothesis for the formation of the Nemuroglanis subclade.

  15. Monticellia santafesina n. sp. (Cestoda: Proteocephalidea), a parasite of Megalonema platanum (Günther) (Siluriformes: Pimelodidae) in the Paraná River basin, Argentina.

    PubMed

    Arredondo, Nathalia J; de Pertierra, Alicia A Gil

    2010-06-01

    The proteocephalidean tapeworm Monticellia santafesina n. sp. is described from the siluriform catfish Megalonema platanum (Günther) (Siluriformes: Pimelodidae) in the Paraná River basin, Argentina. The new species is allocated to Monticellia La Rue, 1911 (Proteocephalidae: Monticelliinae) because of the cortical position of the testes, ovary, vitelline follicles and uterus, a globular scolex without a metascolex and uniloculate suckers. The new species differs from all other species of Monticellia (except for M. lenha Woodland, 1933) in possessing a vaginal canal opening anterior or posterior to the cirrus-sac. M. santafesina can be distinguished from M. lenha by the following characteristics: a larger body size; a weakly developed internal longitudinal musculature arranged in 15-35 slim bundles of muscle fibres; vitelline follicles not interrupted at the level of the cirrus-sac and vaginal canal, and with a few paramuscular and/or medullary follicles; the absence of large spinitriches on the anterior margin of the suckers; and the utilisation of Megalonema platanum (in the Paraná River basin) as its host, rather than Sorubimichthys planiceps (Spix & Agassiz) (in the River Amazon). Monticellia santafesina exhibits low values of prevalence (9%) and intensity of infection (1). Megalonema platanum was parasitised by two proteocephalidean cestodes, Rudolphiella cf. lobosa (Riggenbach, 1895) and the new species described in this paper. PMID:20437217

  16. New species and geographical records of dactylogyrids (Monogenea) of catfish (Siluriformes) from the Peruvian Amazonia.

    PubMed

    Mendoza-Palmero, Carlos A; Scholz, Tomáš; Mendoza-Franco, Edgar F; Kuchta, Roman

    2012-06-01

    Three new species of gill monogeneans (Dactylogyridae: Ancyrocephalinae) are described from siluriform catfish from Iquitos, Peru: Demidospermus mortenthaleri n. sp. from Brachyplatystoma juruense (Boulenger), Demidospermus brevicirrus n. sp. from Pimelodus sp., and Aphanoblastella aurorae n. sp. from Goeldiella eques (Müller & Troschel). Demidospermus mortenthaleri is characterized by a male copulatory organ (MCO) with a small loop at its middle portion; 2 types of hooks, of which pairs 5 and 6 are longer than the remaining hooks; a proximal subunit round and highly depressed thumb; and a sclerotized vagina with a round pad at the vaginal aperture. Demidospermus brevicirrus is distinguished from other congeners by the presence of a short, straight, and robust MCO and boot-shaped accessory piece with a hooked projection directed posteriorly. Aphanoblastella aurorae is the only species of the genus that possesses an arrow-shaped sclerotized vagina and a medial process on the dorsal bar. Another 6 dactylogyrids described previously are recorded for the first time from the Peruvian Amazonia: Cosmetocleithrum bulbocirrus Kritsky, Thatcher and Boeger, 1986 ; Vancleaveus fungulus Kritsky, Thatcher and Boeger, 1986 ; V. janauacaensis Kritsky, Thatcher and Boeger, 1986 ; V. platyrhynchi Kritsky, Thatcher and Boeger, 1986 ; Unilatus unilatus Mizelle and Kritsky, 1967 ; and U. brittani Mizelle, Kritsky and Crane, 1968 . Based on observations of specimens collected in the Peruvian Amazonia, new morphological data for these species are provided. Comparison of new specimens of U. unilatus and U. brittani with those of Unilatus brevispinus Suriano, 1985 and Unilatus longispinus Suriano, 1985 , both originally described from Brazil, has shown that they are conspecific. Therefore, the latter species were synonymized with U. unilatus and U. brittani , respectively. In addition, 56 undescribed monogeneans found in catfish from the Peruvian Amazonia, some of them probably belonging to new genera, are listed. PMID:22191552

  17. Grand Canyon Explorer

    NSDL National Science Digital Library

    Maintained by Bob Ribokas, Grand Canyon Explorer is quite extraordinary for a unaffiliated Web site. Updated regularly, it contains everything from stunning photography and geologic descriptions to information about hiking permits and park trials for users planning a trip. A highlight of the site is the guided tour, which provides descriptions and pictures from the park entrance to the Grand Canyon's spectacular formations like Mohave Point on the South Rim. The author has even provided a downloadable version of the Web site for Pocket PC's and PDA's, enabling users to have all the information at their finger tips when visiting the park.

  18. Transverse section through the Grand Lodge and Grand Chapter rooms ...

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

    Transverse section through the Grand Lodge and Grand Chapter rooms of James H. Windrim and George Summers?s neoclassical competition design for the New Masonic Temple, Philadelphia, 1867 - Masonic Temple, 1 North Broad Street, Philadelphia, Philadelphia County, PA

  19. Grand Ole Opry House

    USGS Multimedia Gallery

    Rivers in middle Tennessee crested May 2-3,2010, breaking records at many USGS-operated streamgages.The flood peak on the Cumberland River in downtown Nashville ranks as the highest observed during the past 73 years. Flooding on the Cumberland River damaged the Grand Ole Opry House, Bridgestone Aren...

  20. Grand Staircase-Escalante

    USGS Multimedia Gallery

    A view of Grand Staircase-Escalante National Monument from Rainbow Point in Bryce Canyon National Park. Bryce Canyon is a unique sandstone formation in southern Utah. It is home to a large number of hoodoos, which are oddly shaped pillars of rock that formed due to different erosion rates for the d...

  1. The Grand Canyon

    NSDL National Science Digital Library

    Brieske, Joel A.

    2002-01-01

    The first site from PBS.org, called Lost in the Canyon (1), offers an excellent online learning experience. Visitors learn about John Wesley Powell's expedition down the Colorado River, covered in transcripts from the companion television show and a timeline of Powell's life. Other features include an interactive lesson on running rapids and a look at the unique geologic history of the area. Next, from StudyWorks! Online comes the lesson entitled Sleuthing at the Grand Canyon: Using Rocks to Tell Us About the Past (2). Through basic descriptions, photographs, and illustrations, students learn how rocks form, how scientists use them to find out about past environments, and much more. The third site is provided by the Grand Canyon Monitoring and Research Center called The Grand Canyon Monitoring and Research Center Fiscal Year 2000-2004 Monitoring and Research Strategic Plan (3). Readers will discover the mission of the center, history of monitoring in the area, management strategies, research activities, and much more. Next is a site offered by Richard S. Naylor of Northeastern University's Department of Geology called Unconformities in the Grand Canyon (4). Visitors will find descriptions and photographs of several sites in the Grand Canyon that exhibit geologic unconformities or surfaces that represent a break in the geologic record. The fifth site is maintained by kaibob.org called the Geology of Grand Canyon (5). This site contains basic information on how the canyon was formed, where all the rock came from, why it looks like it does, and when it all happened. From NASA's Visible Earth Web site comes the 3-D View of Grand Canyon (6) page. The canyon can be viewed in a low or high resolution JPEG format, which shows the surrounding area, part of the Colorado river, and the canyon itself in dynamic colors. Part of Northern Arizona University, the seventh site is entitled Canyons, Culture, and Environmental Change: An Introduction to the Land Use History of the Colorado Plateau (7). The site provides an introduction to the environmental history of the Colorado Plateau and summarizes a vast body of research from multiple disciplines in an easily accessible format. The last site from NOAA's Colorado River Basin Forecast Center is the River Forecasts and Data page (8). Provided are data from various sites along the river that offer a wide range of relevant information such as simulated hydrographs.

  2. Harriscolex nathaliae N. Sp. (Cestoda: Proteocephalidea) from Pseudoplatystoma corruscans (Siluriformes: Pimelodidae) in the Paraná River Basin, Argentina.

    PubMed

    Al Gil de Pertierra, Alicia; de Chambrier, Alain

    2013-06-01

    The proteocephalidean cestode Harriscolex nathaliae n. sp. (Proteocephalidae: Zygobothriinae) is described from the intestine of the spotted sorubim Pseudoplatystoma corruscans (Spix and Agassiz) (Siluriformes: Pimelodidae) from the Paraná River basin in Argentina. This new species differs from the only species of the genus, Harriscolex kaparari (Woodland, 1935), which is a parasite of Pseudoplatystoma tigrinum (Linnaeus) from the Amazon River in Brazil, by its larger scolex (width of 450-750 ?m vs. 305-340 ?m), the position of the vagina in relation to the cirrus sac (anterior and posterior vs. only anterior), an asymmetrical vaginal sphincter, the arrangement of vitelline follicles (1 narrow longitudinal band on each side of the proglottid vs. 2 pairs of wide longitudinal bands on dorsal and ventral sides), and a higher number of uterine diverticula (22-45 vs. 16-20). Harriscolex nathaliae is covered with 2 types of microtriches, acicular filitriches and gladiate spinitriches. PMID:23146094

  3. The Grand Time Game

    NSDL National Science Digital Library

    The Grand Time Game is a collection of activities that teach students about geologic time. The game elements consist of a tabletop model that demonstrates the geologic history of the Grand Canyon, a script in which students report selected events along the geologic time scale as the instructor operates the model, and a set of overhead transparencies that the instructor shows to illustrate the story. The materials also include an activity sheet for students to record important events as they progress, and a card game about fossils and geologic time, played in groups of three or four students after the script reading (the cards can also be pasted onto a calendar or timeline). Instructions for building the model are provided.

  4. The Grand Challenge

    NSDL National Science Digital Library

    VU Bioengineering RET Program, School of Engineering,

    This lesson introduces the MRI Safety Grand Challenge question. Students write journal responses to the question and brainstorm what information they need to know in order to answer the question. Their ideas are shared with the class and recorded. Then students watch a video interview with a real-life researcher to gain a professional perspective on MRI safety and brainstorm for more ideas. Through the associated activity, students visualize magnetic fields.

  5. The Rio Grande conservatory

    SciTech Connect

    Kriescher, P.; Mazria, E.

    2000-04-01

    Today, as public concern mounts about the environmental damage caused by conventional energy technologies, architects are exploring new methods of providing energy to buildings so that they have a more cooperative relationship with the environment. The technology choices now available in glazing make it possible to maximize the use of the sun's energy while minimizing the heat loss and gain associated with large expanses of glazing. Mazria Riskin Odems Inc., the architects of the Rio Grande Conservatory, an all-glass botanical conservatory in Albuquerque, New Mexico, created a striking example of what is possible through the judicious use of modern glazing technologies.

  6. The Grand Canyon

    NASA Technical Reports Server (NTRS)

    2001-01-01

    Northern Arizona and the Grand Canyon are captured in this pair of MISR images from December 31, 2000 (Terra orbit 5525). The left-hand image is a true color view from the nadir (vertical) camera. The right-hand image is a stereo composite generated using data from MISR's vertical and 46-degree-forward cameras. Viewing the stereo image in 3-D requires the use of red/blue glasses with the red filter placed over your left eye. To facilitate stereo viewing, the images have been oriented with north at the left.

    In addition to the Grand Canyon itself, which is visible in the western (lower)half of the images, other landmarks include Lake Powell, on the left, and Humphreys Peak and Sunset Crater National Monument on the right. Meteor Crater appears as a small dark depression with a brighter rim, and is just visible along the upper right-hand edge. Can you find it?

    MISR was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Office of Earth Science, Washington, DC. The Terra satellite is managed by NASA's Goddard Space Flight Center, Greenbelt, MD. JPL is a division of the California Institute of Technology.

  7. MALE RIO GRANDE WILD TURKEY

    E-print Network

    Rio Grande wild turkeys (Meleagris gallopavo intermedia) in the northern extent of their native range, displaying, foraging, habitat, Kansas, loafing, Meleagris gallopavo intermedia, riparian restoration, roosts

  8. Grand Challenges For Engineering

    NSDL National Science Digital Library

    Where will the next great ideas in engineering come from? What will they be? These are but a few of the excellent and thoughtful questions being asked as part of the Grand Challenges For Engineering initiative. Sponsored by the National Academy of Engineering (NAE), this website is part of their effort to solicit opinions on this material from engineering experts and members of the scientific community. Visitors to the site can learn about members of the initiative's committee and also learn about some of the innovations that the panel is already thinking about, such as the challenges of landing on Mars. In the "Hopes" section, visitors can read several essays, including one from President Jimmy Carter on his own thoughts on future challenges in this area of human endeavor. It is also worth noting that visitors can offer their own opinions on all of the material here, and that comments are moderated along the way.

  9. The Grand Canyon

    NSDL National Science Digital Library

    This lesson plan is part of the DiscoverySchool.com lesson plan library for grades 6-8. It focuses on the ecology of the Grand Canyon area. Students act as scientists investigating the damming of the Colorado River by the Glen Canyon dam and experimental flooding that took place in 1996. They then write a proposal as to whether or not more experimental flooding should be done on the area considering the ecological effects. It includes objectives, materials, procedures, discussion questions, evaluation ideas, extensions, suggested readings, and vocabulary. There are videos available to order which complement this lesson, an audio-enhanced vocabulary list, and links to teaching tools for making custom quizzes, worksheets, puzzles and lesson plans.

  10. Metazoan parasites of Conorhynchos conirostris (Valenciennes, 1840) an endemic siluriform fish of the São Francisco basin, Brazil.

    PubMed

    Brasil-Sato, Marilia de C; Dos Santos, Michelle D

    2005-01-01

    Specimens of Conorhynchos conirostris (Valenciennes, 1840) (Osteichthyes: Siluriformes) were collected from the upper São Francisco River (18 degrees 12'32''S, 45 degrees 15'41''W) in the municipality of Três Marias, Minas Gerais, Brazil, to investigate their parasitofauna. Of the 24 pirá fish collected, 8 were male (33.3%) and 16 were female (66.7%). Of this total, 12 were parasitized (50%). Nine species of parasites were found: Helobdella sp., Creptotrema creptotrema Travassos, Artigas & Pereira, 1928; Palaeocryptogonimus claviformis Szidat, 1954; metacercariae of Clinostomum sp. and of Austrodiplostomum compactum (Lutz 1928); Procamallanus (Spirocamallanus) sp. (young specimen); larvae of Anisakidae and Rhabdochona sp.; and Neoechinorhynchus sp. (young specimen). Helobdella sp. had the highest prevalence, followed by C. creptotrema (most abundant) and P. claviformis. Creptotrema creptotrema was dominant species in the parasite community of C. conirostris. There was no influence of the host size and sex on the prevalence and abundance of parasites, with P. claviformis being found only in male hosts. With the exception of Procamallanus (Spirocamallanus) sp., this was the first record of these parasites in C. conirostris. PMID:16445873

  11. First description of B chromosomes in the family Auchenipteridae, Parauchenipterus galeatus (Siluriformes) of the São Francisco River basin (MG, Brazil).

    PubMed

    Lui, Roberto Laridondo; Blanco, Daniel Rodrigues; Margarido, Vladimir Pavan; Filho, Orlando Moreira

    2009-01-01

    B chromosomes are considered additional and non-essential; they likely originate from A chromosomes and follow a distinct evolution. In fish, approximately half of the Neotropical species with B chromosomes are Characiformes and 35% are Siluriformes. There has been no report of B chromosomes in Auchenipteridae until this moment. B chromosomes found in a population of Parauchenipterus galeatus from the São Francisco River basin in the state of Minas Gerais (Brazil) were small, metacentric, totally heterochromatic and exhibited intra-individual and inter-individual variation. The diploid number was 58 chromosomes (22 metacentric, 16 submetacentric, 12 subtelocentric and 8 acrocentric). The nucleolar organizing regions were simple and the heterochromatin intercalated in the ribosomal sites, characterized by CMA(3) and DAPI fluorochromes, was of a GC-rich constitution. The 5S rDNA genes were located in an intercalary position in only one chromosome pair. An hypothesis about the origin of the B chromosomes in P. galeatus and a review on B chromosomes in catfish are also presented in this study. PMID:19394233

  12. Grand Canyon Explorer: The Geology of the Grand Canyon

    NSDL National Science Digital Library

    Bob Ribokas

    This site provides an overview of how the Grand Canyon was formed. Concepts discussed include erosion by water, ice and wind, continental drift, and deposition. A photo gallery and stratigraphic figures support the text.

  13. DARPA Grand Challenge 2005

    NSDL National Science Digital Library

    The Defense Advanced Research Projects Agency (DARPA), the central research and development organization for the Department of Defense (DoD), sponsors the annual DARPA Grand Challenge (first reported on in the August 1, 2003, NSDL Scout Report for Math, Engineering, and Technology), which is "a field test intended to accelerate research and development in autonomous ground vehicles that will help save American lives on the battlefield." Individuals and organizations from industry, the R&D community, government, the armed services, academia, students, backyard inventors, and automotive enthusiasts are invited to enter the challenge. The news release posted on this website on June 6, 2005, announces the 40 semifinalists selected to advance to the National Qualification Event, which will be held September 27 through October 6, 2005 in Fontana, Calif. The team that develops an autonomous ground vehicle that is the first to finish the designated route within 10 hours wins $2 million. When the race was first held in 2003, the most successful team managed to cover only 7.4 miles of the desert terrain featuring natural and man-made obstacles. A related website describing the Autonomous Vehicle Practice Facility of the US Department of Defense Joint Robotics Program (JRP) was still under construction at the time of this report.

  14. Grand slam on cancer.

    PubMed

    Gartrell, Nanette

    2014-01-01

    A winner of 59 Grand Slam championships including a record 9 Wimbledon singles titles, Martina Navratilova is the most successful woman tennis player of the modern era. Martina was inducted into the International Tennis Hall of Fame, named "Tour Player of the Year" seven times by the Women's Tennis Association, declared "Female Athlete of the Year" by the Associated Press, and ranked one of the "Top Forty Athletes of All-Time" by Sports Illustrated. Equally accomplished off the court, Martina is an author, philanthropist, TV commentator, and activist who has dedicated her life to educating people about prejudice and stereotypes. After coming out as a lesbian in 1981, Martina became a tireless advocate of equal rights for lesbian, gay, bisexual, and transgender (LGBT) people, and she has contributed generously to the LGBT community. Martina is the author of seven books, including most recently Shape Your Self: My 6-Step Diet and Fitness Plan to Achieve the Best Shape of your Life, an inspiring guide to healthy living and personal fitness. Martina was diagnosed with breast cancer in 2010. PMID:24400624

  15. Molecular differentiation of species of the genus Zungaro (Siluriformes, Pimelodidae) from the Amazon and Paraná-Paraguay River basins in Brazil.

    PubMed

    Boni, T A; Padial, A A; Prioli, S M A P; Lucio, L C; Maniglia, T C; Bignotto, T S; Panarari-Antunes, R S; Prioli, R A; Prioli, A J

    2011-01-01

    Fish species of the Zungaro genus (Siluriformes, Pimelodidae) are amongst the largest migratory fish in Latin America and have considerable economic importance for commercial fishing in Brazil. However, natural populations of this large catfish are experiencing a severe decline. There are significant taxonomical inconsistencies for this fish. Two geographically separated species of the fish were initially described, one endemic in the Amazon and another in the Paraná-Paraguay River basins. A taxonomic review had recently proposed that there is only one Zungaro species in Brazil, based on morphological data. We made a molecular study of Zungaro populations in an attempt to solve taxonomical inconsistencies and to analyze genetic diversity in natural populations of this genus. We analyzed two regions of the mitochondrial DNA (the control region and the ATPase 6 gene region) of individuals sampled from the Paraná-Paraguay River and Amazon River basins. Analyses based on p-distances and maximum likelihood phylogenetic models showed a genetic difference between populations corresponding to different species. Genetic differentiation between Zungaro populations was at the same level as that observed between other Siluriformes species, using the same DNA sequences. We conclude that Zungaro species of the Paraná-Paraguay River basin do not belong to the same species found in the Amazon basin. This finding has a significant implication for conservation of this fish, given that populations are disappearing at a high rate in the Paraná-Paraguay River basin, mainly due to impoundments. PMID:22095604

  16. Progress Report "The Grand Challenges

    E-print Network

    Bou-Zeid, Elie

    Professor in Ecology and Evolutionary Biology. Director, Princeton Environmental Institute Frontcover: With Grand Challenges project funding to develop sustainable technologies for Africa, faculty member Winston of poverty, environment, health, and conflict. Individuals with the scholarly accomplishments required

  17. Nuclear Proliferation and Grand Challenges

    ScienceCinema

    McCarthy, Kathy

    2013-05-28

    Nuclear engineer Dr. Kathy McCarthy leads systems analysis. She talks about proliferation and the grand challenges of nuclear R&D. For more information about INL energy research, visit http://www.facebook.com/idahonationallaboratory.

  18. 1996 Grand Canyon Flood Analysis

    NSDL National Science Digital Library

    Mark Manone

    Mark Manone, Northern Arizona University Summary Analyze the effect of a 1996 controlled flood on a sandbar in Grand Canyon. This exercise uses Spatial Analyst and 3D Analyst Context Type and level of course ...

  19. Needs assessment for the Greenway Grand Forks-East Grand Forks development and public education

    Microsoft Academic Search

    Laura Munski

    2008-01-01

    Following the flood of 1997, the U.S. Army Corps of Engineers included the Greenway Grand Forks---East Grand Forks (the Greenway) as a flood control measure for Grand Forks, North Dakota and East Grand Forks, Minnesota. It extends along both the Red River of the North and the Red Lake River, encompassing 2200 acres of land. The cities of Grand Forks

  20. Flavor tests of grand unification

    SciTech Connect

    Hall, L.J.

    1995-10-31

    How will we ever be convinced that grand unification, or string theory, or some other physics at very high energies, is correct? Two ways in which this could happen are: The structure of the theory is itself so compelling and tightly constrained, and the links to observed particle interactions are sufficiently strong, that the theory is convincing and is accepted as the standard viewpoint. String theory is a candidate for such a theory, but connections to known physics will require much further understanding of the breaking of its many symmetries. The theory predicts new physics beyond the standard model, which is discovered. If the structure of the theory is not very tightly constrained, several such predictions will be necessary for it to become convincing. Grand unification is a candidate for such a theory, but as yet there have been no discoveries beyond the standard model. Supersymmetric grand unified theories do have a constrained gauge structure, and this has led to the successful prediction of the weak mixing angle at the percent level of accuracy While significant, this is hardly convincing. Never-the-less, supersymmetric grand unified theories offer the prospect of many further tests. In this talk I make the case that experiments of this decade, and the next, allow for the possibility that we might become convinced that grand unification is correct.

  1. Thomas Moran: "The Grand Canyon."

    ERIC Educational Resources Information Center

    Brubaker, Ann

    1986-01-01

    Presents a lesson plan for introducing students in grades four through six to Thomas Moran's painting, "The Grand Canyon." The goal of the lesson is to illustrate the importance of the American West as a subject for artists in the nineteenth century. (JDH)

  2. Le grand entretien L'interdisciplinarit

    E-print Network

    van Tiggelen, Bart

    Le grand entretien L'interdisciplinarité selonEdgarMorin w dépasser les frontières le journal n dernier prix Nobel de physique. 18 I19 Le grand entretien Edgar Morin, philosophe et sociologue, directeur

  3. Grand rip and grand bang/crunch cosmological singularities

    NASA Astrophysics Data System (ADS)

    Fernández-Jambrina, L.

    2014-09-01

    The present accelerated expansion of the Universe has enriched the list of possible scenarios for its fate, singular or not. In this paper a unifying framework for analyzing such behaviors is proposed, based on generalized power and asymptotic expansions of the barotropic index w, or equivalently of the deceleration parameter q, in terms of the time coordinate. Besides well-known singular and nonsingular future behaviors, other types of strong singularities appear around the phantom divide in flat models, with features similar to those of big rip or big bang/crunch, which we have dubbed "grand rip" and "grand bang/crunch," respectively, since energy density and pressure diverge faster than t-2 in coordinate time. In addition to this, the scale factor does not admit convergent generalized power series around these singularities with a finite number of terms with negative powers.

  4. Grand Rip and Grand Bang/Crunch cosmological singularities

    E-print Network

    L. Fernández-Jambrina

    2015-01-26

    The present accelerated expansion of the universe has enriched the list of possible scenarios for its fate, singular or not. In this paper a unifying framework for analyzing such behaviors is proposed, based on generalized power and asymptotic expansions of the barotropic index $w$, or equivalently of the deceleration parameter $q$, in terms of the time coordinate. Besides well known singular and non-singular future behaviors, other types of strong singularities appear around the phantom divide in flat models, with features similar to those of big rip or big bang/crunch, which we have dubbed grand rip and grand bang/crunch respectively, since energy density and pressure diverge faster than $t^{-2}$ in coordinate time. In addition to this, the scale factor does not admit convergent generalized power series around these singularities with a finite number of terms with negative powers.

  5. GRAND DITCH VIEW, FROM FARVIEW CURVE OVERLOOK, VIEWING WEST. DITCH ...

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

    GRAND DITCH VIEW, FROM FARVIEW CURVE OVERLOOK, VIEWING WEST. DITCH IS INDICATED BY HORIZONTAL LINE NEAR TOP OF CLOUD COVERED PEAKS - Grand Ditch, Baker Creek to LaPoudre Pass Creek, Grand Lake, Grand County, CO

  6. Results from KASCADE-Grande

    NASA Astrophysics Data System (ADS)

    Bertaina, M.; Apel, W. D.; Arteaga-Velázquez, J. C.; Bekk, K.; Blümer, J.; Bozdog, H.; Brancus, I. M.; Buchholz, P.; Cantoni, E.; Chiavassa, A.; Cossavella, F.; Daumiller, K.; de Souza, V.; Di Pierro, F.; Doll, P.; Engel, R.; Engler, J.; Finger, M.; Fuhrmann, D.; Ghia, P. L.; Gils, H. J.; Glasstetter, R.; Grupen, C.; Haungs, A.; Heck, D.; Hörandel, J. R.; Huber, D.; Huege, T.; Isar, P. G.; Kampert, K.-H.; Kang, D.; Klages, H. O.; Link, K.; ?uczak, P.; Ludwig, M.; Mathes, H. J.; Mayer, H. J.; Melissas, M.; Milke, J.; Mitrica, B.; Morello, C.; Navarra, G.; Oehlschläger, J.; Ostapchenko, S.; Over, S.; Palmieri, N.; Petcu, M.; Pierog, T.; Rebel, H.; Roth, M.; Schieler, H.; Schröder, F. G.; Sima, O.; Toma, G.; Trinchero, G. C.; Ulrich, H.; Weindl, A.; Wochele, J.; Wommer, M.; Zabierowski, J.

    2012-11-01

    The KASCADE-Grande experiment, located at Karlsruhe Institute of Technology (Germany) is a multi-component extensive air-shower experiment devoted to the study of cosmic rays and their interactions at primary energies 1014-1018 eV. Main goals of the experiment are the measurement of the all-particle energy spectrum and mass composition in the 1016-1018 eV range by sampling charged (Nch) and muon (N?) components of the air shower. The method to derive the energy spectrum and its uncertainties, as well as the implications of the obtained result, is discussed. An overview of the analyses performed by KASCADE-Grande to derive the mass composition of the measured high-energy comic rays is presented as well.

  7. Grand Canyon: The Hidden Secrets

    NSDL National Science Digital Library

    Summertime means vacations for many people, and for many of these sojourning to the American Southwest, this may mean a trip to the brilliance that is the Grand Canyon in northern Arizona. The people at National Geographic certainly know this area quite well, as they have sponsored a number of research expeditions there over the past century or so. Designed as a way to publicize the film that the organization plays at their canyon visitor center, this site contains a number of helpful features for those persons who may be visiting the canyon. First, visitors will want to look at the interactive map of the South Rim offered here. The map allows visitors to learn about selected features of the area, such as the famous bald eagles, the various outlooks, and the plants indigenous to the region. The site also includes a section for young people, a number of free screensavers and wallpapers, along with a travel guide to visiting the Grand Canyon.

  8. Winning the DARPA Grand Challenge

    Microsoft Academic Search

    Sebastian Thrun

    2006-01-01

    The DARPA Grand Challenge has been the most significant challenge to the mobile robotics community in more than a decade.\\u000a The challenge was to build an autonomous robot capable of traversing 132 miles of unrehearsed desert terrain in less than\\u000a 10 hours. In 2004, the best robot only made 7.3 miles. In 2005, Stanford won the challenge and the $2M

  9. Grand Challenges of Enterprise Integration

    SciTech Connect

    Brosey, W.D; Neal, R.E.; Marks, D.

    2001-04-01

    Enterprise Integration connects and combines people, processes, systems, and technologies to ensure that the right people and the right processes have the right information and the right resources at the right time. A consensus roadmap for Technologies for Enterprise Integration was created as part of an industry/government/academia partnership in the Integrated Manufacturing Technology Initiative (IMTI). Two of the grand challenges identified by the roadmapping effort will be addressed here--Customer Responsive Enterprises and Totally Connected Enterprises. Each of these challenges is briefly discussed as to the current state of industry and the future vision as developed in the roadmap.

  10. Grand canonical Molecular Dynamics Simulations

    E-print Network

    Fritsch, S; Junghans, C; Ciccotti, G; Site, L Delle; Kremer, K

    2011-01-01

    For simulation studies of (macro-) molecular liquids it would be of significant interest to be able to adjust/increase the level of resolution within one region of space, while allowing for the free exchange of molecules between (open) regions of different resolution/representation. In the present work we generalize the adaptive resolution idea in terms of a generalized Grand Canonical approach. This provides a robust framework for truly open Molecular Dynamics systems. We apply the method to liquid water at ambient conditions.

  11. SeiSmological grand challengeS

    E-print Network

    Allen, Richard M.

    SeiSmological grand challengeS in UnderStanding earth'S dynamic SyStemS SeiSmological grand challengeS in UnderStanding earth'S dynamic SyStemS January 2009 Long-range Science PLan for SeiSmoLogy WorkShoP SePtember 18­19, 2008, Denver, co #12;PrePared by the SeiSmological grand challengeS Writing grou

  12. Klettafjllin og Grand Canyon 1 Klettafjllin, Grand Canyon og Laramide byltingin

    E-print Network

    Ingólfsson, �lafur

    Klettafjöllin og Grand Canyon 1 Klettafjöllin, Grand Canyon og Laramide byltingin Kristbjörg María farið í Colorado, vestan við Klettafjöllin, en þar er að finna hið mikilfenglega Grand Canyon sem sker. Myndun Klettafjallanna og Grand Canyon hefur lengi valdið miklum heilabrotum meðal vísindamanna, enda er

  13. View of upstream face of the forebay dam of Grand ...

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

    View of upstream face of the forebay dam of Grand Coulee Dam, looking west. Construction of the forebay dam, which replaced the eastern end of the original Grand Coulee Dam, was completed in 1974. - Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake, Across Columbia River, Southeast of Town of Grand Coulee, Grand Coulee, Grant County, WA

  14. Grand unification of neutron stars

    PubMed Central

    Kaspi, Victoria M.

    2010-01-01

    The last decade has shown us that the observational properties of neutron stars are remarkably diverse. From magnetars to rotating radio transients, from radio pulsars to isolated neutron stars, from central compact objects to millisecond pulsars, observational manifestations of neutron stars are surprisingly varied, with most properties totally unpredicted. The challenge is to establish an overarching physical theory of neutron stars and their birth properties that can explain this great diversity. Here I survey the disparate neutron stars classes, describe their properties, and highlight results made possible by the Chandra X-Ray Observatory, in celebration of its 10th anniversary. Finally, I describe the current status of efforts at physical “grand unification” of this wealth of observational phenomena, and comment on possibilities for Chandra’s next decade in this field. PMID:20404205

  15. American Experience: Grand Coulee Dam

    NSDL National Science Digital Library

    2012-04-27

    Among many great national achievements during the Great Depression, the Grand Coulee Dam remains one of the most impressive. This fine website from the American Experience program complements a documentary that was first aired on PBS in 2012. The construction of this dam would, in the worlds of President Franklin Roosevelt, be part of a "planned promised land" that would transform the lives of farm families. The site includes a great interactive timeline, a photo gallery, and a short preview of the entire film. Additionally, the site includes two nice bonus videos, including one that deals with the processes of closing the spillway. The blog on the site includes several interesting posts on the history of the dam. Also, visitors have the opportunity to share their own stories about their own favorite iconic structures in the United States.

  16. Evaluation of videoconferenced grand rounds.

    PubMed

    Allen, Michael; Sargeant, Joan; MacDougall, Eileen; O'Brien, Brian

    2002-01-01

    We evaluated various aspects of grand rounds videoconferenced from a tertiary care hospital to a regional hospital in Nova Scotia. During a five-month study period, 29 rounds were broadcast (19 in medicine and 10 in cardiology). The total recorded attendance at the remote site was 103, comprising 70 specialists, nine family physicians and 24 other health-care professionals. We received 55 evaluations, a response rate of 53%. On a five-point Likert scale (on which higher scores indicated better quality), mean ratings by remote-site participants of the technical quality of the videoconference were 3.0-3.5, with the lowest ratings being for ability to hear the discussion (3.0) and to see visual aids (3.1). Mean ratings for content, presentation, discussion and educational value were 3.8 or higher. Of the 49 physicians who presented the rounds, we received evaluations from 41, a response rate of 84%. The presenters rated all aspects of the videoconference and interaction with remote sites at 3.8 or lower. The lowest ratings were for ability to see the remote sites (3.0) and the usefulness of the discussion (3.4). We received 278 evaluations from participants at the presenting site, an estimated response rate of about 55%. The results indicated no adverse opinions of the effect of videoconferencing (mean scores 3.1-3.3). The estimated costs of videoconferencing one grand round to one site and four sites were C dollars 723 and C dollars 1515, respectively. The study confirmed that videoconferenced rounds can provide satisfactory continuing medical education to community specialists, which is an especially important consideration as maintenance of certification becomes mandatory. PMID:12217103

  17. Hyacinths Choke the Rio Grande

    NASA Technical Reports Server (NTRS)

    2002-01-01

    These images acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), flying aboard NASA's Terra satellite, demonstrate the potential of satellite-based remote sensors to monitor infestations of non-native plant species. These images show the vigorous growth of water hyacinths along a stretch of the Rio Grande River in Texas. The infestation had grown so dense in some places it was impeding the flow of water and rendered the river impassible for boats. The hyacinth is an aquatic weed native to South America. The plant is exotic looking and, when it blooms, the hyacinth produces a pretty purple flower, which is why it was introduced into North America. However, it has the capacity to grow and spread at astonishing rates so that in the wild it can completely clog the flow of rivers and waterways in a matter of days or weeks. The top image was acquired on March 30, 2002, and the bottom image on May 9, 2002. In the near-infrared region of the spectrum, photosynthetically-active vegetation is highly reflective. Consequently, vegetation appears bright to the near-infrared sensors aboard ASTER; and water, which absorbs near-infrared radiation, appears dark. In these false-color images produced from the sensor data, healthy vegetation is shown as bright red while water is blue or black. Notice a water hyacinth infestation is already apparent on March 30 near the center of the image. By May 9, the hyacinth population has exploded to cover more than half the river in the scene. Satellite-based remote sensors can enable scientists to monitor large areas of infestation like this one rather quickly and efficiently, which is particularly useful for regions that are difficult to reach from on the ground. (For more details, click to read Showdown in the Rio Grande.) Images courtesy Terrametrics; Data provided by the ASTER Science Team

  18. Proton Hexality in Local Grand Unification

    E-print Network

    Stefan Forste; Hans Peter Nilles; Saul Ramos-Sanchez; Patrick K. S. Vaudrevange

    2010-09-03

    Proton hexality is a discrete symmetry that avoids the problem of too fast proton decay in the supersymmetric extension of the standard model. Unfortunately it is inconsistent with conventional grand unification. We show that proton hexality can be incorporated in the scheme of "Local Grand Unification" discussed in the framework of model building in (heterotic) string theory.

  19. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...Waters 1 2012-07-01 2012-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable...REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the Lansing Island bridge,...

  20. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Waters 1 2010-07-01 2010-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable...REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the Lansing Island bridge,...

  1. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...Waters 1 2011-07-01 2011-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable...REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the Lansing Island bridge,...

  2. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...Waters 1 2013-07-01 2013-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable...REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the Lansing Island bridge,...

  3. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...Waters 1 2014-07-01 2014-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable...REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the Lansing Island bridge,...

  4. Aspects of grand unified and string phenomenology

    Microsoft Academic Search

    Joel W. Walker; Dimitri V Nanopoulos

    2005-01-01

    Explored in this report is the essential interconnectedness of Grand Unified and String Theoretic Phenomenology. In order to extract a modeled connection to low-energy physics from the context of superstring theory, it is presently necessary to input some preferred region of parameter space in which to search. This need may be well filled by a parallel study of Grand Unification,

  5. How Was the Grand Canyon Formed?

    NSDL National Science Digital Library

    In this lesson students will learn about how the Grand Canyon was formed, focusing on the process of erosion. They will examine the canyon's rock layers to infer what the area looked like when the layers were created. Students will conclude by creating posters illustrating and describing what the Grand Canyon looks like today and what it looked in the past. Students will locate Arizona on a United States map and find the Grand Canyon. They will locate the Colorado River and trace its route from east to west through the canyon. Students will study a photograph of the Grand Canyon, brainstorm how the canyon was formed, and discuss their ideas. They will also view and discuss drawings of the Grand Canyon region as its various rock layers were deposited.

  6. A large-scale phylogeny of Synodontis (Mochokidae, Siluriformes) reveals the influence of geological events on continental diversity during the Cenozoic.

    PubMed

    Pinton, Aurélie; Agnèse, Jean-François; Paugy, Didier; Otero, Olga

    2013-03-01

    To explain the spatial variability of fish taxa at a large scale, two alternative proposals are usually evoked. In recent years, the debate has centred on the relative roles of present and historical processes in shaping biodiversity patterns. In Africa, attempts to understand the processes that determine the large scale distribution of fishes and exploration of historical contingencies have been under-investigated given that most of the phylogenetic studies focus on the history of the Great Lakes. Here, we explore phylogeographic events in the evolutionary history of Synodontis (Mohokidae, Siluriformes) over Africa during the Cenozoic focusing on the putative role of historical processes. We discuss how known geological events together with hydrographical changes contributed to shape Synodontis biogeographical history. Synodontis was chosen on the basis of its high diversity and distribution in Africa: it consists of approximately 120 species that are widely distributed in all hydrographic basins except the Maghreb and South Africa. We propose the most comprehensive phylogeny of this catfish genus. Our results provide support for the 'hydrogeological' hypothesis, which proposes that palaeohydrological changes linked with the geological context may have been the cause of diversification of freshwater fish deep in the Tertiary. More precisely, the two main geological structures that participated to shape the hydrographical network in Africa, namely the Central African Shear zone and the East African rift system, appear as strong drivers of Synodontis diversification and evolution. PMID:23274216

  7. A new Neocalceostomatid (Monogenoidea) from the gills of the blackfin sea catfish, Arius jella (Siluriformes: Ariidae), in the Bay of Bengal, India.

    PubMed

    Kritsky, Delane C; Shameem, U; Kumari, Ch Padma; Krishnaveni, I

    2012-06-01

    Thysanotohaptor n. gen. (Neocalceostomatidae) is proposed to accommodate Thysanotohaptor rex n. sp. collected from the gills of the blackfin sea catfish Arius jella Day (Siluriformes: Ariidae) from off the coast of Visakhapatnam, Bay of Bengal, Andhra Pradesh, India. Thysanotohaptor is differentiated from the other known neocalceostomatid genera by its species having multiple postgermarial testes (single testis in species of Neocalceostoma and Neocalceostomoides ), lacking a transverse bar associated with the ventral anchor pair (present in species of Neocalceostoma ), and possessing a disc-shaped haptor with a pleated marginal frill (frill absent in Neocalceostomoides spp.; Neocalceostoma spp. with delicate marginal membranes). The Neocalceostomatidae is considered valid within the Order Dactylogyridea based on its members having a haptor armed with 10 marginal and 4 ventral hooks and a germarium having a distal loop prior to uniting with the ootype; the family is not assigned to a suborder of Dactylogyridea because of uncertainty in part about the way in which the distribution of haptoral hooks evolved within the taxon. PMID:22263751

  8. Blood flukes (Digenea: Aporocotylidae) of walking catfishes (Siluriformes: Clariidae): new genus and species from the Mekong River (Vietnam) with comments on related catfish aporocotylids.

    PubMed

    Truong, Triet Nhat; Bullard, Stephen A

    2013-07-01

    Nomasanguinicola canthoensis gen. et sp. n. infects the branchial vessels of bighead catfish, Clarias macrocephalus Günther (Siluriformes: Clariidae), in the Mekong River near Can Tho, southern Vietnam. Nomasanguinicola differs from all other genera of fish blood flukes (Digenea: Aporocotylidae) by the combination of lacking body spines and by having an anterior sucker with two flanking columns of large denticles, an intestine comprising several short papilla-like caeca, an inverse U-shaped uterus, and an ootype located near the separate genital pores. The new species has an ootype that is posterior to the level of the female genital pore. That feature most easily differentiates it from the only other putative aporocotylid species having an anterior sucker with two flanking columns of large denticles, Plehniella dentata Paperna, 1964 and Sanguinicola clarias Imam, Marzouk, Hassan et Itman, 1984, which have an ootype that is lateral (P. dentata) or anterior (S. clarias) to the level of the female genital pore. These two species apparently lack extant type materials, infect North African catfish, Clarias gariepinus (Burchell), and herein are considered incertae sedis, but likely comprise species of Nomasanguinicola. An updated list of hosts, sites of infection and geographic localities for the six species and three genera of blood flukes that mature in catfishes is provided. The new species is the first fish blood fluke recorded from Vietnam and only the third reported from a walking catfish (Clariidae). PMID:23951931

  9. Population Dynamics and Diet of the Madamango Sea Catfish Cathorops spixii (Agassiz, 1829) (Siluriformes: Ariidae) in a Tropical Bight in Southeastern Brazil

    PubMed Central

    Denadai, Márcia; Pombo, Maíra; Santos, Flávia Borges; Bessa, Eduardo; Ferreira, Adriana; Turra, Alexander

    2013-01-01

    The madamango sea catfish, Cathorops spixii (Siluriformes: Ariidae), is often among the most abundant fishes on the South American Atlantic coast. In the present study, conducted in shallow, non-estuarine coastal areas of Caraguatatuba Bight in southeastern Brazil, collections of this species, the most abundant member of the ichthyofauna, included primarily medium-sized individuals, indicating that the area may play a specific role in their development. Although studies of the local ichthyofauna have been much neglected, the area is economically important and its ecological significance is undervalued. This study primarily treats habitat use by C. spixii, assessing certain population parameters and the dietary composition. Monthly samples were taken from August 2003 through October 2004, with three trawls in two areas, corresponding to depths of about 1 to 4 m. The catfish showed two main peaks of abundance in the area, in April/May and July 2004. A mode around 9 cm SL persisted through time, and the entrance of younger recruits peaked from January to April. The low estimate for body-growth parameters (K?=?0.16) corroborates some K-strategist characteristics of the species. The asymptotic length was 27.3 cm SL and total mortality (Z) was 1.01 yr?1. Cathorops spixii showed an omnivorous feeding habit, preying mainly upon polychaetes, copepods and bivalves, with considerable seasonality in its diet. PMID:24282575

  10. Population dynamics and diet of the madamango Sea catfish Cathorops spixii (Agassiz, 1829) (Siluriformes: Ariidae) in a tropical bight in Southeastern Brazil.

    PubMed

    Denadai, Márcia; Pombo, Maíra; Santos, Flávia Borges; Bessa, Eduardo; Ferreira, Adriana; Turra, Alexander

    2013-01-01

    The madamango sea catfish, Cathorops spixii (Siluriformes: Ariidae), is often among the most abundant fishes on the South American Atlantic coast. In the present study, conducted in shallow, non-estuarine coastal areas of Caraguatatuba Bight in southeastern Brazil, collections of this species, the most abundant member of the ichthyofauna, included primarily medium-sized individuals, indicating that the area may play a specific role in their development. Although studies of the local ichthyofauna have been much neglected, the area is economically important and its ecological significance is undervalued. This study primarily treats habitat use by C. spixii, assessing certain population parameters and the dietary composition. Monthly samples were taken from August 2003 through October 2004, with three trawls in two areas, corresponding to depths of about 1 to 4 m. The catfish showed two main peaks of abundance in the area, in April/May and July 2004. A mode around 9 cm SL persisted through time, and the entrance of younger recruits peaked from January to April. The low estimate for body-growth parameters (K = 0.16) corroborates some K-strategist characteristics of the species. The asymptotic length was 27.3 cm SL and total mortality (Z) was 1.01 yr(-1). Cathorops spixii showed an omnivorous feeding habit, preying mainly upon polychaetes, copepods and bivalves, with considerable seasonality in its diet. PMID:24282575

  11. 17. Photocopy of photograph (original contact print in Grand Rapids ...

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

    17. Photocopy of photograph (original contact print in Grand Rapids Michigan City Library, Michigan Room) circa 1908, photographer unknown. VIEW NORTH - NORTHEAST, SOUTHSIDE, GENERAL VIEW. - Bridge Street Bridge, Spanning Grand River, Michigan & Bridge Streets, Grand Rapids, Kent County, MI

  12. Flooding in Grand Forks, North Dakota in 1997

    USGS Multimedia Gallery

    Flood waters inundated Grand Forks, North Dakota and East Grand Forks, Minnesota.The picture is looking west to Grand Forks, North Dakota and the  USGS gage house is the small white square in the center of the picture....

  13. MOBILITY IN GRAND JUNCTION DAVID SCHRANK

    E-print Network

    INSTITUTE TIM LOMAX RESEARCH ENGINEER TEXAS TRANSPORTATION INSTITUTE TIM BAKER UNIT MANAGER, MOBILITY White · Joe Hill City of Grand Junction Transportation Department · Jody Kliska · Sandra Mallory

  14. Wintertime meteorology of the Grand Canyon region

    SciTech Connect

    Whiteman, C.D.

    1992-09-01

    The Grand Canyon region of the American Southwest is an interesting region meteorologically, but because of its isolated location, the lack of major population centers in the region, and the high cost of meteorological field experiments, it has historically received little observational attention. In recent years, however, attention has been directed to episodes of visibility degradation in many of the US National parks, and two recent field studies focused on this visibility problem have greatly increased the meteorological data available for the Grand Canyon region. The most recent and comprehensive of these studies is the Navajo Generating Station Winter Visibility Study of 1989--90. This study investigated the sources of visibility degradation in Grand Canyon National Park and the meteorological mechanisms leading to low visibility episodes. In this paper we present analyses of this rich data set to gain a better understanding of the key wintertime meteorological features of the Grand Canyon region.

  15. Plio-pleistocene pumice floods in the ancestral Rio Grande, southern Rio Grande rift, USA

    Microsoft Academic Search

    Greg H. Mack; William C. McIntosh; Michael R. Leeder; H. Curtis Monger

    1996-01-01

    At least four times during the late Pliocene and early Pleistocene pyroclastic eruptions in the Jemez volcanic field, northern Rio Grande rift, flooded the ancestral Rio Grande with gravel-sized pumice. Following as much as 400 km of fluvial transport, the pumice was deposited in beds 0.2 to 2.0 m thick in the Camp Rice Formation of the southern Rio Grande

  16. 75 FR 6094 - Modification of Class E Airspace; Grand Junction, CO

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-08

    ...Modification of Class E Airspace; Grand Junction, CO AGENCY: Federal Aviation Administration...Grand Junction Regional, Grand Junction, CO, to accommodate the vectoring of Instrument...Grand Junction Regional, Grand Junction, CO to en route airspace, and changes the...

  17. Karyotype and cytogenetic mapping of 9 classes of repetitive DNAs in the genome of the naked catfish Mystus bocourti (Siluriformes, Bagridae)

    PubMed Central

    2013-01-01

    Background In the present study, conventional and molecular cytogenetic studies were performed in the naked catfish Mystus bocourti (Siluriformes, Bagridae). Besides the conventional Giemsa staining, fluorescence in situ hybridization (FISH) using nine classes of repetitive DNAs namely 5S and 18S rDNAs, U2 snRNA, the microsatellites (CA)15 and (GA)15, telomeric repeats, and the retrotransposable elements Rex1, 3 and 6. was also performed. Results M. bocourti had 2n?=?56 chromosomes with a karyotype composed by 11 m?+?11 sm?+?6 st/a and a fundamental number (NF) equal to 100 in both sexes. Heteromorphic sex chromosome cannot be identified. The U2 snRNA, 5S and 18S rDNA were present in only one pair of chromosomes but none of them in a syntenic position. Microsatellites (CA)15 and (GA)15 showed hybridization signals at subtelomeric regions of all chromosomes with a stronger accumulation into one specific chromosomal pair. FISH with the telomeric probe revealed hybridization signals on each telomere of all chromosomes and interstitial telomeric sites (ITS) were not detected. The retrotransposable elements Rex1, 3 and 6 were generally spread throughout the genome. Conclusions In general, the repetitive sequences were not randomly distributed in the genome, suggesting a pattern of compartmentalization on the heterochromatic region of the chromosomes. Little is known about the structure and organization of bagrid genomes and the knowledge of the chromosomal distribution of repetitive DNA sequences in M. bocourti represents the first step for achieving an integrated view of their genomes. PMID:24266901

  18. Monopoles of SU(15) grand unification

    SciTech Connect

    Pal, P.B.

    1991-03-01

    In a recently analyzed grand unified model based on the gauge group SU(15), monopoles are automatically consistent with the cosmological mass density bound. The Parker bound of monopole flux puts some constaints on the model which can be easily satisfied.

  19. Investigative Case - "Rio Grande Wildlife Refuge"

    NSDL National Science Digital Library

    Developed for Lifelines Online by Wayne McMillan of Garden City Community College and Mark A. Storey of Texarkana College. (www.bioquest.org/lifelines (more info) )

    As professional ecologists working for the fish and wildlife service, students must develop a plan to manage a new wildlife refuge along the Rio Grande River. The fish and wildlife service plans to connect forest islands along the river, which will become not only a new refuge but also a "wildlife corridor."

  20. Spécificités des grandes villes de province

    Microsoft Academic Search

    Philippe Julien

    1996-01-01

    [spa] Especificidades de las grandes ciudades de provincias . El cruce entre la actividad econômica y la cualificaciôn individual (funciôn) permite describir el empleo ofrecido por las areas urbanas con toda la precision deseable : se toman en cuenta, entre otras, las interferencias entre sectores secundario y terciario (empleos terciarios de la industria). Doce de dichas funciones, llamadas funciones estratégicas,

  1. The Verification Grand Challenge and Abstract Interpretation

    E-print Network

    Cousot, Patrick

    The Verification Grand Challenge and Abstract Interpretation Patrick Cousot1 ´Ecole normale sup of real-time, safety critical, embedded systems. For example, Astr´ee [1,2,3,17,18,25] can analyze mechanically and verify formally the absence of runtime errors in industrial safety-critical embedded

  2. The Verification Grand Challenge and Abstract Interpretation

    E-print Network

    Cousot, Patrick

    The Verification Grand Challenge and Abstract Interpretation Patrick Cousot École normale to automatically verify complex properties of real­ time, safety critical, embedded systems. For example, ASTRÉE [1 safety­critical embedded control/command codes of several hundred thousand lines of C. We summarize

  3. The Verification Grand Challenge and Abstract Interpretation

    E-print Network

    Cousot, Patrick

    The Verification Grand Challenge and Abstract Interpretation Patrick Cousot École normale to automatically verify complex properties of real- time, safety critical, embedded systems. For example, ASTRÉE [1 safety-critical embedded control/command codes of several hundred thousand lines of C. We summarize

  4. BAHIA GRANDE RESTORATION PROJECT DW14945947

    EPA Science Inventory

    The Bahia Grande Restoration Project is located on a 6,000+ acre shallow basin that at one time was inundated with biological resources. The basin supported large flocks of wintering and migratory waterfowl. Also, it contributed to a productive recreational and commercial fishe...

  5. LONDON'S GLOBAL UNIVERSITY THE GRAND CHALLENGE OF

    E-print Network

    Saunders, Mark

    LONDON'S GLOBAL UNIVERSITY THE GRAND CHALLENGE OF GLOBAL HEALTH 08/09 #12;UCL began as a radical, struggling upstart on the fringes of London. Its founding principles of innovation, accessibility. UCL ­ LONDON'S GLOBAL UNIVERSITY A world to transform The world is in crisis. Billions of us suffer

  6. Grand Staircase-Escalante Framed by Cedars

    USGS Multimedia Gallery

    Grand Staircase-Escalante National Monument, managed by BLM, can be seen framed by two cedar trees in Bryce Canyon National Park. Bryce Canyon is a unique sandstone formation in southern Utah. It is home to a large number of hoodoos, which are oddly shaped pillars of rock that formed due to differe...

  7. Bryce Canyon and Grand Staircase-Escalante

    USGS Multimedia Gallery

    Views along the Queen's Garden Trail in Bryce Canyon National Park; Grand Staircase-Escalante National Monument can be seen in the background. Bryce Canyon is a unique sandstone formation in southern Utah. It is home to a large number of hoodoos, which are oddly shaped pillars of rock that formed d...

  8. Bryce Canyon and Grand Staircase-Escalante

    USGS Multimedia Gallery

    In the foreground are sandstone hoodoos and in the background is the Grand Staircase-Escalante National Monument, which is managed by the Bureau of Land Management. Bryce Canyon is a unique sandstone formation in southern Utah. It is home to a large number of hoodoos, which are oddly shaped pillars...

  9. Gravity as a Grand Unification of Forces

    Microsoft Academic Search

    Rasulkhozha Sharafiddinov

    2005-01-01

    Any of all possible types of charges corresponds in nature to a kind of the inertial mass. Such a mass - charge duality of matter explains the coexistence of grand united rest mass and charge for the same neutrino equal respectively to its all the gravitational mass and charge which consist of the gravitoelectric, gravitoweak, gravitostrong and a range of

  10. Overview of the Multiple Biometrics Grand Challenge

    Microsoft Academic Search

    P. Jonathon Phillips; Patrick J. Flynn; J. Ross Beveridge; W. Todd Scruggs; Alice J. O'toole; David S. Bolme; Kevin W. Bowyer; Bruce A. Draper; Geof H. Givens; Yui Man Lui; Hassan Sahibzada; Joseph A. Scallan; Samuel Weimer

    2009-01-01

    The goal of the Multiple Biometrics Grand Challenge (MBGC) is to improve the performance of face and iris recognition technology from biometric samples acquired under unconstrained conditions. The MBGC is organized into three challenge problems. Each challenge problem re- laxes the acquisition constraints in dierent directions. In the Portal Challenge Problem, the goal is to recognize people from near-infrared (NIR)

  11. www.law.und.edu GRAND FORKS

    E-print Network

    Delene, David J.

    www.law.und.edu GRAND FORKS 2010-2011 ACADEMIC CATALOG #12;WELCOME FROM THE DEAN Thank you for your interest in the University of North Dakota School of Law. As you weigh choosing among the more than 200 law one law school from another. If you are looking for a law school that o ers a high-quality legal

  12. www.law.und.edu GRAND FORKS

    E-print Network

    Delene, David J.

    www.law.und.edu GRAND FORKS 2011-2012 ACADEMIC CATALOG #12;WELCOME FROM THE DEAN Thank you for your interest in the University of North Dakota School of Law. As you weigh choosing among the more than 200 law one law school from another. If you are looking for a law school that offers a high-quality legal

  13. Map Your Way to the Grand Canyon

    ERIC Educational Resources Information Center

    Yoder, Holly

    2005-01-01

    In the introductory assignment, each randomly assigned group spends about 10 to 15 minutes at each station. The author incorporates as much sensory stimulation in the activity as possible. At the first station, students view a PowerPoint show from a geology class the author participated in at the Grand Canyon. At station two, students look at a…

  14. Foundations and Grand Challenges of Artificial

    E-print Network

    Reddy, Raj

    chess. Chess is an AI problem par excellence. It plays the same role in artificial intelligenceFoundations and Grand Challenges of Artificial Intelligence Raj Reddy 1988 AAAI Presidential in our field. First, let us look at some recent advances. Advances in Artificial Intelligence What can we

  15. The Colorado River in the Grand Canyon.

    ERIC Educational Resources Information Center

    Speece, Susan

    1991-01-01

    An assessment of the water quality of the Colorado River in the Grand Canyon was made, using the following parameters: dissolved oxygen, water temperature, hydrogen ion concentration, total dissolved solids, turbidity, and ammonium/nitrogen levels. These parameters were used to provide some clue as to the "wellness" and stability of the aquatic…

  16. Toxic Waste in Grand Banks. Lesson Plan.

    ERIC Educational Resources Information Center

    Litchka, Peter

    "Toxic Waste in Grand Banks" is an assessment task in which students from a high school economics class investigate the issues of economic prosperity, environmental concerns, government intervention in the market economy, and responsible civic participation in solving community problems. Students will demonstrate an ability--both individually and…

  17. The Cambrian eustatic signal: Not so grand

    SciTech Connect

    Cowan, C.A.; James, N.P. (Queen's Univ., Kingston, Ontario (Canada))

    1990-05-01

    Efforts to decipher potential high-frequency (fourth- and fifth-order) eustatic signals within third-order grand cycles in Cambrian strata of western Newfoundland have yielded a surprising result: the conspicuous, large-scale stratigraphic rhythms, grand cycles, were not principally a bathymetric phenomenon, grand cycles, i.e., the stratigraphic repetition of tens-of-meters-thick lithosomes, which are alternately carbonate and terrigenous clastic rich, are widely cited as evidence for lower Paleozoic third-order eustatic fluctuations. Evidence from Middle to Upper Cambrian platform strata in western Newfoundland indicates that grand cyclicity in this area was not simply a response to sea level change. Instead, the stratigraphic signal of eustasy is marked by the presence of terrigenous clastics in an otherwise carbonate-prone succession. Detailed facies analysis reveals that both terrigenous and carbonate lithosomes are locally constructed of predictable, meter-scale, coarsening-upward cycles. Lithofacies constituting meter-scale cycles in both lithosomes are bathymetrically indistinguishable with respect to environmental energy, ichnofauna, and exposure index. Meter-scale cycles in either lithosome are typically capped by the same lithology, precluding contemporaneous generation of carbonate vs. terrigenous cycles along some presumed bathymetric gradient. Obvious lithologic differences between carbonate and terrigenous meter-scale cycles obscure their common origin. Terrigenous cycles are best explained by the incursion of siliciclastic fines into a shallow-water carbonate environment irrespective of sea level change.

  18. Navajo generating plant and Grand Canyon haze

    SciTech Connect

    Norris, J.E.

    1991-01-15

    This article examines the question of whether the Navajo generating plant pollution is contributing to pollution of the air in the Grand Canyon region. The topics include the regulatory context of the plant, the experiment known as the Winter Haze Intensive Tracer Experiment (WHITEX), the National Research Council evaluation of the WHITEX, and The Navajo Generating Station Visibility Study.

  19. Grand Canyon Monitoring and Research Center

    USGS Publications Warehouse

    Hamill, John F.

    2009-01-01

    The Grand Canyon of the Colorado River, one of the world's most spectacular gorges, is a premier U.S. National Park and a World Heritage Site. The canyon supports a diverse array of distinctive plants and animals and contains cultural resources significant to the region's Native Americans. About 15 miles upstream of Grand Canyon National Park sits Glen Canyon Dam, completed in 1963, which created Lake Powell. The dam provides hydroelectric power for 200 wholesale customers in six western States, but it has also altered the Colorado River's flow, temperature, and sediment-carrying capacity. Over time this has resulted in beach erosion, invasion and expansion of nonnative species, and losses of native fish. Public concern about the effects of Glen Canyon Dam operations prompted the passage of the Grand Canyon Protection Act of 1992, which directs the Secretary of the Interior to operate the dam 'to protect, mitigate adverse impacts to, and improve values for which Grand Canyon National Park and Glen Canyon National Recreation Area were established...' This legislation also required the creation of a long-term monitoring and research program to provide information that could inform decisions related to dam operations and protection of downstream resources.

  20. Grand Canyon Humpback Chub Population Improving

    USGS Publications Warehouse

    Andersen, Matthew E.

    2007-01-01

    The humpback chub (Gila cypha) is a long-lived, freshwater fish found only in the Colorado River Basin. Physical adaptations-large adult body size, large predorsal hump, and small eyes-appear to have helped humpback chub evolve in the historically turbulent Colorado River. A variety of factors, including habitat alterations and the introduction of nonnative fishes, likely prompted the decline of native Colorado River fishes. Declining numbers propelled the humpback chub onto the Federal list of endangered species in 1967, and the species is today protected under the Endangered Species Act of 1973. Only six populations of humpback chub are currently known to exist, five in the Colorado River Basin above Lees Ferry, Ariz., and one in Grand Canyon, Ariz. The U.S. Geological Survey's Grand Canyon Monitoring and Research Center oversees monitoring and research activities for the Grand Canyon population under the auspices of the Glen Canyon Dam Adaptive Management Program (GCDAMP). Analysis of data collected through 2006 suggests that the number of adult (age 4+ years) humpback chub in Grand Canyon increased to approximately 6,000 fish in 2006, following an approximate 40-50 percent decline between 1989 and 2001. Increasing numbers of adult fish appear to be the result of steadily increasing numbers of juvenile fish reaching adulthood beginning in the mid- to late-1990s and continuing through at least 2002.

  1. Comparing ecological restoration alternatives: Grand Canyon, Arizona

    Microsoft Academic Search

    Peter Z. Fulé; W. Wallace Covington; H. B. Smith; Judith D. Springer; Thomas A. Heinlein; Kristin D. Huisinga; Margaret M. Moore

    2002-01-01

    Three treatments designed to initiate the process of restoring the surface fire regime and open forest structure of a southwestern ponderosa pine forest were compared on the Kaibab National Forest along the Grand Canyon’s South Rim. The treatments were: (1) full restoration (FULL)—thinning trees to emulate stand structure prior to fire regime disruption ca. 1887, forest floor fuel treatment, and

  2. Rio Grande rift: problems and perspectives

    SciTech Connect

    Baldridge, W.S.; Olsen, K.H.; Callender, J.F.

    1984-01-01

    Topics and ideas addressed include: (1) the regional extent of the Rio Grande rift; (2) the structure of the crust and upper mantle; (3) whether the evidence for an axile dike in the lower crust is compelling; (4) the nature of faulting and extension in the crust; and (5) the structural and magmatic development of the rift. 88 references, 5 figures.

  3. Creationism in the Grand Canyon, Texas Textbooks

    NASA Astrophysics Data System (ADS)

    Folger, Peter

    2004-01-01

    AGU President Bob Dickinson, together with presidents of six other scientific societies, have written to Joseph Alston, Superintendent of Grand Canyon National Park, pointing out that a creationist book, The Grand Canyon: A Different View, is being sold in bookstores within the borders of the park as a scientific explanation about Grand Canyon geologic history. President Dickinson's 16 December letter urges that Alston clearly separate The Grand Canyon: A Different View from books and materials that discuss the legitimate scientific understanding of the origin of the Grand Canyon. The letter warns the Park Service against giving the impression that it approves of the anti-science movement known as young-Earth creationism, or that it endorses the advancement of religious tenets disguised as science. The text of the letter is on AGU's Web site http://www.agu.org/sci_soc/policy/sci_pol.html. Also, this fall, AGU sent an alert to Texas members about efforts by intelligent design creationists aimed at weakening the teaching of biological evolution in textbooks used in Texas schools. The alert pointed scientists to a letter, drafted by AGU, together with the American Institute of Physics, the American Physical Society, the Optical Society of America, and the American Astronomical Society, that urged the Texas State Board of Education to adopt textbooks that presented only accepted, peer-reviewed science and pedagogical expertise. Over 550 scientists in Texas added their names to the letter (http://www.agu.org/sci_soc/policy/texas_textbooks.pdf ), sent to the Board of Education on 1 November prior to their vote to adopt a slate of new science textbooks. The Board voted 11-5 in favor of keeping the textbooks free of changes advocated by groups supporting intelligent design creationism.

  4. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.906 Grand Haven Coast Guard...48? N, 086°14?17? W; then back to the point of origin (NAD 83). (b) Special Local Regulations....

  5. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.906 Grand Haven Coast Guard...48? N, 086°14?17? W; then back to the point of origin. (DATUM: NAD 83). (b) Special Local...

  6. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.906 Grand Haven Coast Guard...48? N, 086°14?17? W; then back to the point of origin. (DATUM: NAD 83). (b) Special Local...

  7. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.906 Grand Haven Coast Guard...48? N, 086°14?17? W; then back to the point of origin. (DATUM: NAD 83). (b) Special Local...

  8. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.906 Grand Haven Coast Guard...48? N, 086°14?17? W; then back to the point of origin. (DATUM: NAD 83). (b) Special Local...

  9. 76 FR 44302 - Upper Rio Grande Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-25

    ...Register Volume 76, Number 142 (Monday, July 25, 2011)] [Notices] [Pages 44302-44303...DEPARTMENT OF AGRICULTURE Forest Service Upper Rio Grande Resource Advisory Committee AGENCY...SUMMARY: The Upper Rio Grande Resource Advisory Committee...

  10. 27 CFR 9.119 - Middle Rio Grande Valley.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...the boundaries of the “Middle Rio Grande Valley” viticultural...1952), revised 1979. (25) Wind Mesa, N. Mex. (1952...boundary of the proposed Middle Rio Grande Valley viticultural area...converges with New Mexico State Route 25/Interstate 85 (now known...

  11. 27 CFR 9.119 - Middle Rio Grande Valley.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...the boundaries of the “Middle Rio Grande Valley” viticultural...1952), revised 1979. (25) Wind Mesa, N. Mex. (1952...boundary of the proposed Middle Rio Grande Valley viticultural area...converges with New Mexico State Route 25/Interstate 85 (now known...

  12. 17. Junction of old Crosscut Canal with Grand Canal, view ...

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

    17. Junction of old Crosscut Canal with Grand Canal, view to north; Crosscut enters from upper right, control gates of Grand Canal at left. - Old Crosscut Canal, North Side of Salt River, Phoenix, Maricopa County, AZ

  13. 13. VIEW OF EXISTING GRAND CANAL COURT PEDESTRIAN BRIDGE OVER ...

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

    13. VIEW OF EXISTING GRAND CANAL COURT PEDESTRIAN BRIDGE OVER CARROLL CANAL, LOOKING WEST TOWARD GRAND CANAL FROM NORTH SIDE OF CARROLL CANAL - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  14. 19. VIEW OF PEDESTRIAN BRIDGE OVER GRAND CANAL LOCATED SOUTH ...

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

    19. VIEW OF PEDESTRIAN BRIDGE OVER GRAND CANAL LOCATED SOUTH OF SHERMAN CANAL, LOOKING NORTH FROM THE EAST SIDE OF GRAND CANAL - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  15. "United States Reclamation Service, Grand River Dam, plan & sections ...

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

    "United States Reclamation Service, Grand River Dam, plan & sections of power-house." No date specified - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  16. "United States Reclamation Service, Grand River Dam, pier "A" and ...

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

    "United States Reclamation Service, Grand River Dam, pier "A" and east side regulator gate wall." No date specified - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  17. "United States Reclamation Service Grand River Dam side elevation & ...

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

    "United States Reclamation Service Grand River Dam side elevation & sections gate houses - piers D & F." No date specified - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  18. 32. VIEW OF TERMINUS OF GRAND CANAL, SHOWING TURNOUT GATES, ...

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

    32. VIEW OF TERMINUS OF GRAND CANAL, SHOWING TURNOUT GATES, LOOKING SOUTHWEST. WASTE WATER IS TURNED INTO THE BED OF NEW RIVER. Photographer: Mark Durben, April 1989 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

  19. Cause-specific Mortality of Grand Multiparous Women in Finland

    Microsoft Academic Search

    Marianne Hinkula; Antti Kauppila; Simo Nayha; Eero Pukkala

    2005-01-01

    Knowledge is limited on mortality of grand multiparous women (? 5 deliveries), whose hormonal, metabolic, and social conditions differ from the average. The authors studied overall and cause-specific mortality in 1974-2001 among 87,922 grand multiparous women including 3,678 grand grand multiparous women (? 10 deliveries) in Finland. Standardized mortality ratios were defined as ratios of observed to expected numbers of

  20. 2. Lower end of the Old Crosscut at the Grand ...

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

    2. Lower end of the Old Crosscut at the Grand Canal, aerial view to Southeast. The Old Crosscut, obscured by trees, runs from lower left to where it meets the much larger Grand. The large mound is the Pueblo Grande archaeological site. Photographer: A.D. Newcomer, 1928 Source: Pueblo Grande Museum Cultural Park, Phoenix, Arizona. - Old Crosscut Canal, North Side of Salt River, Phoenix, Maricopa County, AZ

  1. 16. Photocopy of photograph (original contact print in Grand Rapids, ...

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

    16. Photocopy of photograph (original contact print in Grand Rapids, Michigan City Library, Michigan Room) 1904, photographer unknown. VIEW NORTHEAST, SOUTHSIDE, BRIDGE UNDER CONSTRUCTION. Note old railroad tressel bridge. - Bridge Street Bridge, Spanning Grand River, Michigan & Bridge Streets, Grand Rapids, Kent County, MI

  2. Overview of the Grand Junction Office from Bluff east of ...

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

    Overview of the Grand Junction Office from Bluff east of facility. Note Buildings #35. #33 and #31A in lower left of photograph. VIEW WEST - Department of Energy, Grand Junction Office, 2597 B3/4 Road, Grand Junction, Mesa County, CO

  3. 27 CFR 9.87 - Grand River Valley.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2010-04-01 2010-04-01 false Grand River Valley. 9.87 Section 9.87 Alcohol...American Viticultural Areas § 9.87 Grand River Valley. (a) Name. The name of the...area described in this section is “Grand River Valley.” (b) Approved map....

  4. 27 CFR 9.87 - Grand River Valley.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2011-04-01 2011-04-01 false Grand River Valley. 9.87 Section 9.87 Alcohol...American Viticultural Areas § 9.87 Grand River Valley. (a) Name. The name of the...area described in this section is “Grand River Valley.” (b) Approved map....

  5. 27 CFR 9.87 - Grand River Valley.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...2013-04-01 2013-04-01 false Grand River Valley. 9.87 Section 9.87 Alcohol...American Viticultural Areas § 9.87 Grand River Valley. (a) Name. The name of the...area described in this section is “Grand River Valley.” (b) Approved map....

  6. 27 CFR 9.87 - Grand River Valley.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...2012-04-01 2012-04-01 false Grand River Valley. 9.87 Section 9.87 Alcohol...American Viticultural Areas § 9.87 Grand River Valley. (a) Name. The name of the...area described in this section is “Grand River Valley.” (b) Approved map....

  7. 27 CFR 9.87 - Grand River Valley.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...2014-04-01 2014-04-01 false Grand River Valley. 9.87 Section 9.87 Alcohol...American Viticultural Areas § 9.87 Grand River Valley. (a) Name. The name of the...area described in this section is “Grand River Valley.” (b) Approved map....

  8. Radiocarbon dates from the Casa Grande. Final report

    SciTech Connect

    Andresen, J.M.

    1981-01-01

    This report suggests a very early Civano construction date for Casa Grande, Casa Grande Ruins National Monument, Arizona on the basis of C14 dates from fragments of two primary roof beams. The radiocarbon dates presented are seen as a positive contribution to an understanding of the history of Casa Grande.

  9. CURRICULUM VITAE: THEODORE KENNEDY Grand Canyon Monitoring and Research Center

    E-print Network

    Lovich, Jeffrey E.

    CURRICULUM VITAE: THEODORE KENNEDY Grand Canyon Monitoring and Research Center United States/RESEARCH: 2/05 - present. Aquatic Ecologist, Grand Canyon Monitoring and Research Center, USGS, Flagstaff.S. 1/03 - 3/04. Postdoctoral researcher, Grand Canyon Monitoring and Research Center,USGS, Flagstaff

  10. Pathogens in Rio Grande River Water Few studies have evaluated the microbial quality of the Rio Grande River despite its

    E-print Network

    Pathogens in Rio Grande River Water Few studies have evaluated the microbial quality of the Rio of the pathogens Cryptosporidium and Giardia in Rio Grande River water in the El Paso, Texas, region to human health by these pathogens. Levels of· Cryptosporidium and Giardia in Rio Grande River water

  11. IEEE ROBOTICS AND AUTOMATION MAGAZINE SPECIAL ISSUE ON GRAND CHALLENGES IN ROBOTICS 1 The Grand Challenges in Socially Assistive

    E-print Network

    Scassellati, Brian

    IEEE ROBOTICS AND AUTOMATION MAGAZINE SPECIAL ISSUE ON GRAND CHALLENGES IN ROBOTICS 1 The Grand users through social rather than physical interaction [1]. This paper describes the broad scope and are currently being developed to assist people with disabilities. The paper then proposes the grand challenges

  12. Nonuniform fluids in the grand canonical ensemble

    SciTech Connect

    Percus, J.K.

    1982-01-01

    Nonuniform simple classical fluids are considered quite generally. The grand canonical ensemble is particularly suitable, conceptually, in the leading approximation of local thermodynamics, which figuratively divides the system into approximately uniform spatial subsystems. The procedure is reviewed by which this approach is systematically corrected for slowly varying density profiles, and a model is suggested that carries the correction into the domain of local fluctuations. The latter is assessed for substrate bounded fluids, as well as for two-phase interfaces. The peculiarities of the grand ensemble in a two-phase region stem from the inherent very large number fluctuations. A primitive model shows how these are quenched in the canonical ensemble. This is taken advantage of by applying the Kac-Siegert representation of the van der Waals decomposition with petit canonical corrections, to the two-phase regime.

  13. Grand-Unified-Theory Baryogenesis after Preheating

    Microsoft Academic Search

    Edward W. Kolb; Andrei Linde; Antonio Riotto

    1996-01-01

    At the end of inflation the Universe is frozen in a near zero-entropy state with energy density in a coherent scalar field and must be ``defrosted'' to produce the observed entropy and baryon number. We propose that the baryon asymmetry is generated by the decay of supermassive grand-unified-theory (GUT) bosons produced nonthermally in a preheating phase after inflation. We show

  14. Drives : les grands thormes 20 septembre 2013

    E-print Network

    Mironescu, Petru

    ;Pierre de Fermat (160?-1665). Magistrat de métier. Homme de grande culture, latiniste, helléniste points d'extremum #12;Théorème de Fermat (I) Théorème de Fermat (I) Hypothèses I intervalle ouvert f. Contributions en mathématiques (petit théorème de Fermat) et en physique (principe de Fermat en optique) #12

  15. LE GRAND TH EME DE FERMAT

    E-print Network

    Faccanoni, Gloria

    LE GRAND TH â?? EOR â?? EME DE FERMAT Vendredi 20 octobre 2000 â?? a 10h30 Une marge qui fit couler augebitur scientia Extrait du testament arithmâ??etique lettre de Fermat â??a Carcavi, aoâ??ut #### z n = x n + y Fermat. Euler dâ??emontre le cas de l'exposant 3, Legendre et Dirichlet celui de l'exposant 5, Lam

  16. Survival of Rio Grande Wild Turkey chicks

    Microsoft Academic Search

    Brian L. Spears; Warren B. Ballard; Mark C. Wallace; Richard S. Phillips; Derrick P. Holdstock; John H. Brunjes; Roger D. Applegate; Michael S. Miller; Philip S. Gipson

    Knowledge of chick survival rates is required to develop species-specific habitat-survival relationships. We determined pre-flight daily survival of Rio Grande Wild Turkey (Meleagris gallopavo intermedia) chicks from hatching to time of tree roost at four sites in southwestern Kansas and the Texas Rolling Plains, May-August, 2000 and 2001. One-hundred twenty-three chicks from 39 broods were equipped with cyanoacrylate-attached transmitters. The

  17. Geology Fieldnotes: Grand Canyon National Park, Arizona

    NSDL National Science Digital Library

    Visitors can access park geology information, photographs, related links, visitor information, multimedia resources, and resources for teaching geology with National Park examples. The park geology section discusses the Grand Canyon's geologic history, structural geology, and features a question-and-answer section about the canyon. The history of the canyon as a park and environmental issues surrounding it are also discussed. A geologic cross section of the canyon showing the various rock layers is included.

  18. GRAVITY AS A GRAND UNIFICATION OF FORCES

    E-print Network

    Rasulkhozha S. Sharafiddinov

    2005-01-01

    Any of all possible types of charges corresponds in nature to a kind of the inertial mass. Such a mass- charge duality of matter explains the coexistence of grand united rest mass and charge for the same neutrino equal respectively to its all the gravitational mass and charge which consist of the gravitoelectric, gravitoweak, gravitostrong and a range of others, innate components. From their point of view, a new grand unification theory has been created at the discussion of a question about unification of forces of a different nature. In this theory, the gravitational field must be naturally united gauge field of the unified system of the most diverse combinations of electromagnetic photons, weak bosons and strong gluons where the four pairs of forces of the micro world fundamental interactions are united. Some consequences and laboratory confirmations of the suggested theory have been listed which allow also to define the structure of the graviton as a grand united boson. Thereby it gives the possibility to directly look at the nature of the gravitational matter elucidating the interratio of intraneutrino forces

  19. Gravity as a Grand Unification of Forces

    E-print Network

    Sharafiddinov, R S

    2004-01-01

    Any of all possible types of charges corresponds in nature to a kind of the inertial mass. Such a mass - charge duality of matter explains the coexistence of grand united rest mass and charge for the same neutrino equal respectively to its all the gravitational mass and charge which consist of the gravitoelectric, gravitoweak, gravitostrong and a range of others, innate components. From their point of view, a new grand unification theory has been created at the discussion of a question about unification of forces of a different nature. In this theory, the gravitational field must be naturally united gauge field of the unified system of the most diverse combinations of electromagnetic photons, weak bosons and strong gluons where the four pairs of forces of the micro world fundamental interactions are united. Some consequences and laboratory confirmations of the suggested theory have been listed which allow also to define the structure of the graviton as a grand united boson. Thereby it gives the possibility to...

  20. Hospital grand rounds in family medicine. Content and educational structure.

    PubMed Central

    Lewkonia, R.; Sosnowski, M.; Murray, F.

    1996-01-01

    OBJECTIVE: To investigate hospital grand rounds in family medicine, to examine their content and organization, and to recommend improved educational structures for these ubiquitous continuing medical education events. DATA SELECTION: Retrospective analysis of titles and content of 358 family medicine grand rounds offered in the department of family medicine of a large urban hospital from mid-1983 to the end of 1994. FINDINGS: Only 10% of family medicine grand rounds were presented by family physicians. Most grand rounds were in the form of specialists exhibiting their own interests in a lecture format. Analysis of grand rounds titles showed no consistent pattern of topics but an emphasis on practical aspects of medical care. Patient-based presentations were uncommon, as were grand rounds with more than one speaker. CONCLUSIONS: The content and mix of topics appeared appropriate, but in the absence of a curricular structure, or evaluation of learning gain, it is difficult to assess the value of grand rounds. PMID:9222579

  1. Greening of the Grand Canyon -- developing a sustainable design for the Grand Canyon National Park

    SciTech Connect

    Gordon, H.T. [Burt Hill Kosar Rittelmann Associates, Washington, DC (United States)

    1995-11-01

    The Grand Canyon National Park (GCNP) is faced with increasing visitor demand that is threatening the natural and cultural resources of one of the most popular recreation sites in the United States. The National Park Service (NPS) developed a draft General Management Plan (GMP), which provides management objectives and visions for the entire park, with alternative plans for the park`s developed areas. With the GMP as a starting point, a Grand Canyon Sustainable Design Workshop was conducted to make the Grand Canyon National Park more environmentally and economically sustainable. The workshop, which used the Environmental Design Charrette process, addressed integrated environmental solutions and their implementation in three primary areas: Integrated Information, Visitor Experience, and Resource Efficiency. This paper describes the Environmental Design Charrette process and the efforts of the Resource Efficiency group.

  2. Needs assessment for the Greenway Grand Forks-East Grand Forks development and public education

    NASA Astrophysics Data System (ADS)

    Munski, Laura

    Following the flood of 1997, the U.S. Army Corps of Engineers included the Greenway Grand Forks---East Grand Forks (the Greenway) as a flood control measure for Grand Forks, North Dakota and East Grand Forks, Minnesota. It extends along both the Red River of the North and the Red Lake River, encompassing 2200 acres of land. The cities of Grand Forks and East Grand Forks hired consultants to assist with the postflood planning process. The planning process culminated with the Red River of the North Greenway Final Report (Flink, 1998). The purpose of this study was to determine if the development of the Greenway addressed the objectives of the planning report. The history of the land adjacent to the rivers was reviewed to document the progression of riverfront development. Anecdotal evidence was collected, field observations were made, city council minutes were reviewed, Greenway Technical Committee members were interviewed, Greenway Technical Committee minutes were reviewed, and the Greenway Grand Forks---East Grand Forks survey results were reviewed to determine if the objectives of the Red River of the North Greenway Final Report were addressed. A cross section survey was designed by Laura Munski for this dissertation research. The survey was approved by the Greenway Technical Committee. The survey collected both quantitative and qualitative data from the community. The purpose of the survey portion of the research project was to ascertain how residents were kept informed of activities on the Greenway and what amenities residents were using on the Greenway and to solicit their comments regarding the Greenway. The results of the survey research were used in both marketing and event planning for the Greenway. The singular qualitative survey question gave respondents an opportunity to share their comments regarding the Greenway. The qualitative data analysis provided insight to the amenities and educational programs desired by respondents, their concerns regarding the Greenway, and the limitations of public knowledge regarding the Greenway. The Red River of the North Greenway Final Report (Flink, 1998) stated that the Greenway could be an excellent resource for supplementing educational curriculums. Greenways provide outdoor classrooms for both formal and informal education. The educational opportunities of other North American greenways were investigated and compared to the educational opportunities of the Greenway.

  3. Resurrection of grand unified theory baryogenesis.

    PubMed

    Fukugita, M; Yanagida, T

    2002-09-23

    A "new" scenario is proposed for baryogenesis. We show that the delayed decay of colored Higgs particles in grand unified theories may generate an excess baryon number of the empirically desired amount, if the mass of the heaviest neutrino is in the range 0.02 eV

  4. The Grand Canyon: Its Youngest Rocks

    NSDL National Science Digital Library

    This video segment adapted from NOVA shows a dramatic landscape created by relatively recent rock-forming activity in the Grand Canyon. Volcanic eruptions only a million years ago created the canyon's youngest rocks. In contrast with the much older Vishnu Schist formation, this younger rock has been much more susceptible to physical change. When three-hundred-meter (thousand-foot) lava dams periodically blocked the river, they were quickly eroded away and river flow restored. A background essay and list of dis

  5. The Grand Challenge: Simulating Human Vision

    NSDL National Science Digital Library

    2014-09-18

    Students are introduced to the Robotics Peripheral Vision Grand Challenge question. They are asked to write journal responses to the question and brainstorm what information they require to answer the question. Their ideas are shared with the class and recorded. Then, students share their ideas with each other and brainstorm any additional ideas. Next, students draw a basis for the average peripheral vision of humans and then compare that range to the range of two different focal lengths in a camera. Through the associated activity provides, students see the differences between human and computer vision.

  6. Supernovae in flocculent and grand design spirals

    SciTech Connect

    Mccall, M.L.; Schmidt, F.H.

    1986-12-01

    The arm structure of supernovae host galaxies has been studied in order to ascertain whether or not spiral density waves have an impact on supernovae frequencies. The ensembles of Type I and Type II supernovae hosts contain identical fractions of grand design spirals consistent with the representations in control samples chosen without regard to supernovae production. The results suggest that a density wave does not greatly enhance the massive star formation rate per unit luminosity of a galaxy. Instead, star formation in most galaxies may be dominated by stochastic processes. 30 references.

  7. Local Grand Unification and String Theory

    SciTech Connect

    Nilles, Hans Peter [Bethe Center for Theoretical Physics and Physikalisches Institut der Universitaet Bonn, Nussallee 12, 53115 Bonn (Germany); Ramos-Sanchez, Saul [Deutsches Elektronen-Synchrotron DESY, Hamburg (Germany); Vaudrevange, Patrick K. S. [Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universitaet Muenchen, 80333 Muenchen (Germany)

    2010-02-10

    The low energy effective action of string theory depends strongly on the process of compactification and the localization of fields in extra dimensions. Explicit string constructions towards the minimal supersymmetric standard model (MSSM) reveal interesting results leading to the concept of local grand unification. Properties of the MSSM indicate that we might live at a special location close to an orbifold fixed point rather than a generic point in Calabi-Yau moduli space. We observe an enhancement of (discrete) symmetries that have various implications for the properties of the MSSM such as proton stability as well as solutions to the flavor problem, the mu-problem and the strong CP-problem.

  8. The Grand Canyon: Its Youngest Rocks

    NSDL National Science Digital Library

    This video segment adapted from NOVA shows a dramatic landscape created by relatively recent rock-forming activity in the Grand Canyon. Volcanic eruptions only a million years ago created the canyon's youngest rocks. In contrast with the much older Vishnu Schist formation, this younger rock has been much more susceptible to physical change. When three-hundred-meter (thousand-foot) lava dams periodically blocked the river, they were quickly eroded away and river flow restored. A background essay and list of discussion questions are included.

  9. Neutrino oscillations in grand unified theories

    SciTech Connect

    Milton, K.A.

    1983-01-01

    The natural scale of nu/sub e/ mixing angles in SO(10) is small, of order theta/sub c//3. It is possible to achieve large nu/sub e/ mixing angles theta, but such solutions are unstable. This difficulty reflects the quark mass hierarchy. On the other hand, nu/sub ..mu../-nu/sub tau/ mixing could naturally be substantial. These qualitative features would be expected to hold any grand unified model where the Gell-Mann-Ramond-Slansky mechanism generates naturally small neutrino masses.

  10. The Grand Canyon: How It Formed

    NSDL National Science Digital Library

    Today, in the deepest part of the Grand Canyon, the Colorado River flows past rocks that are 1.7 billion years old. This video describes how the river cut vertically through layers of pre-existing rock as the plateau beneath it was uplifted by tectonic forces. It also explains that other forces worked to widen the canyon, particluarly the activity of tributary streams and debris flows caused by flash flooding from intense rainfall or rapid snowmelt moving loose rock and boulders down canyon walls and side channels. A background essay and list of discussion questions are also provided.

  11. The Grand Duchy on the Grand Tour: A Historical Study of Student Migration in Luxembourg

    ERIC Educational Resources Information Center

    Rohstock, Anne; Schreiber, Catherina

    2013-01-01

    Since Luxembourg became independent in 1839, practically the entire political, economic and intellectual elite of the country has been socialised abroad. It was only in 2003 that the Grand Duchy set up its own university; before then, young Luxembourgers had to study in foreign countries. Over the past 150 years, Luxembourg has thus experienced…

  12. Citrus Production in the Lower Rio Grande Valley of Texas.

    E-print Network

    Traub, Hamilton Paul; Friend, W. H. (William Heartsill)

    1930-01-01

    LIE?ARY, A t r: COLLEGE, CAvrus. TEXAS AGRICULTURAL EXPERIMENT STATION A. B. CONNER, DIRECTOR COLLEGE STATION, BRAZOS COUNTY, TEXAS - BULLETIN NO. 419 DIVISION OF HORTICULTURE Citrus Production in the Lower Rio Grande Valley of Texas... of Agriculture. . Citrus fruit production in the Lower Rio Grande Valley, especially grapefruit, has increased at a rather rapid rate dur- ing the past few years. More than 5,000,000 citrus trees were set in orchard form in the Lower Rio Grande Valley up...

  13. The Grand Challenge: Fix the Hip Challenge

    NSDL National Science Digital Library

    2014-09-18

    This lesson introduces the Bone Module Grand Challenge question. Students are asked to write their initial responses to the question alone. They will then brainstorm ideas with one other student. Finally, the ideas are shared with the class and recorded. It is important for students to gather information to decide whether or not this condition is hereditary. Students then watch two videos about osteoporosis. Grand Challenge Question: When you get home from school, your mother grabs you, and you rush to the hospital. Your grandmother fell and was rushed to the emergency room. The doctor tells your family your grandmother has a fractured hip, and he is referring her to an orthopedic specialist. The orthopedic doctor decides to perform a DEXA scan. The result showed her bone mineral density (BMD) was -3.3. What would be a probable diagnosis to her condition? What are some possible causes of her condition? Should her family be worried that this condition is hereditary, and if so, what are possible prevented measures they could take to prevent this from happening to them? What statistical method did you use to determine if the condition is hereditary?

  14. Grand Canyon, Lake Powell, and Lake Mead

    NASA Technical Reports Server (NTRS)

    2002-01-01

    A snowfall in the American West provides contrast to the landscape's muted earth tones and indicates changes in topography and elevation across (clockwise from top left) Nevada, Utah, Colorado, New Mexico, Arizona, and California. In Utah, the southern ranges of the Wasatch Mountains are covered in snow, and the Colorado River etches a dark ribbon across the red rock of the Colorado Plateau. In the center of the image is the reservoir created by the Glen Canyon Dam. To the east are the gray-colored slopes of Navaho Mountain, and to the southeast, dusted with snow is the region called Black Mesa. Southwest of Glen Canyon, the Colorado enters the Grand Canyon, which cuts westward through Arizona. At a deep bend in the river, the higher elevations of the Keibab Plateau have held onto snow. At the end of the Grand Canyon lies another large reservoir, Lake Mead, which is formed by the Hoover Dam. Credit: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC

  15. Gravity as a Grand Unification of Forces

    E-print Network

    Rasulkhozha S. Sharafiddinov

    2014-12-17

    To any type of charge corresponds a kind of inertial mass. Such a mass-charge duality explains the availability in the neutrino of the naturally united rest mass and charge equal to all its mass and charge consisting of the electric, weak, strong and the range of other the innate components. From their point of view, we discuss a new theory of a grand unification. In this theory, the gravitational field is a naturally united field of the unified system of the most diverse combinations of the electric photons, magnetic monophotons, weak bosons and the strong gluons where the four pairs of forces of a different nature are united. Some consequences and laboratory confirmations of the discussed theory have been listed, in which graviton is predicted as a grand united gauge boson. Therefore, the gravitons constitute a natural light testifying in favor of gravitational force. They show that to each type of light corresponds a kind of force. Thereby, the suggested field theory that unites all gauge bosons in gravitons gives the possibility to directly look on the nature of gravitational matter elucidating the interratio of intragraviton forces and the problem of elementary particle fundamental symmetries.

  16. Neutrino mass and grand unification of flavor

    E-print Network

    Mohapatra, Rabindra N

    2010-01-01

    The problem of understanding quark mass and mixing hierarchies has been an outstanding problem of particle physics for a long time. The discovery of neutrino masses in the past decade, exhibiting mixing and mass patterns so very different from the quark sector has added an extra dimension to this puzzle. This is specially difficult to understand within the framework of conventional grand unified theories which are supposed to unify the quarks and leptons at short distance scales. In the paper, I discuss a recent proposal by Dutta, Mimura and this author that appears to provide a promising way to resolve this puzzle. After stating the ansatz, we show how it can be realized within a SO(10) grand unification framework. Just as Gell-Mann's suggestion of SU(3) symmetry as a way to understand the hadronic flavor puzzle of the sixties led to the foundation of modern particle physics, one could hope that a satisfactory resolution of the current quark-lepton flavor problem would provide fundamental insight into the na...

  17. Aquatic macroinvertebrates of the Grand Calumet River

    USGS Publications Warehouse

    Last, Laurel L.; Whitman, Richard L.

    2000-01-01

    The Grand Calumet River is potential habitat for a rich community of aquatic macroinvertebrates. Historical surveys of these organisms have been limited to post-industrialization of the Calumet Region; but because river habitats and conditions prior to industrialization have been described, past macroinvertebrate composition can be inferred. In the past 20 years, several surveys have been conducted in the Grand Calumet that have focused on a limited area, but when these studies are amassed the information available covers much of the river. In this paper, the aquatic macroinvertebrate communities in the river are described, and options for restoration are discussed. Many of the macroinvertebrates present are indicators of high levels of pollution, but a few pollution-sensitive species have been found. There is evidence, however, that the sediment quality has improved since the 1960's, likely due to pollution controls that have been put into place. Restoration opportunities should consider the macroinvertebrate community and the potential to improve sediment habitat without damaging the community structure.

  18. Elastoplasticidad anisotropa de metales en grandes deformaciones

    NASA Astrophysics Data System (ADS)

    Caminero Torija, Miguel Angel

    El objetivo de este trabajo es el desarrollo de modelos y algoritmos numericos que simulen el comportamiento del material bajo estas condiciones en el contexto de programas de elementos finitos, dando como resultado predicciones mas precisas de los procesos de conformado y deformacion plastica en general. Para lograr este objetivo se han desarrollado diversas tareas destinadas a mejorar las predicciones en tres aspectos fundamentales. El primer aspecto consiste en la mejora de la descripcion del endurecimiento cinematico anisotropo en pequenas deformaciones, lo cual se ha realizado a traves de modelos y algoritmos implicitos de superficies multiples. Ha sido estudiada la consistencia de este tipo de modelos tanto si estan basados en una regla implicita similar a la de Mroz o en la regla de Prager. Ademas se han simulado los ensayos de Lamba y Sidebottom, obteniendo, en contra de la creencia general, muy buenas predicciones con la regla de Prager. Dichos modelos podrian ser extendidos de forma relativamente facil para considerar grandes deformaciones a traves de procedimientos en deformaciones logaritmicas, similares a los desarrollados en esta tesis y detallados a continuacion. El segundo aspecto consiste en la descripcion de la anisotropia elastoplastica inicial. Esto se ha conseguido mediante el desarrollo de modelos y algoritmos para plasticidad anisotropa en grandes deformaciones, bien ignorando la posible anisotropia elastica, bien considerandola simultaneamente con la anisotropia plastica. Para ello ha sido necesario desarrollar primero un nuevo algoritmo de elastoplasticidad anisotropa en pequenas deformaciones consistentemente linealizado y sin despreciar ningun termino, de tal forma que se conserve la convergencia cuadratica de los metodos de Newton. Este algoritmo en pequenas deformaciones ha servido para realizar la correccion plastica de dos algoritmos en grandes deformaciones. El primero de estos algoritmos es una variacion del clasico algoritmo de Eterovic y Bathe para incluir la posibilidad de plasticidad anisotropa con endurecimiento mixto. Este primer algoritmo esta restringido a casos de isotropia elastica. La isotropia elastica es una hipotesis bastante habitual en plasticidad anisotropa y tiene la ventaja de que permite el uso de formulaciones mixtas u/p. El segundo algoritmo, mas complejo y general, incluye la posibilidad de elasticidad anisotropa, plasticidad anisotropa y endurecimiento mixto. Este algoritmo supone una contribucion importante ya que esta basado en hipotesis comunmente aceptadas y utilizadas en elastoplasticidad isotropa: descomposicion multiplicativa del gradiente de deformaciones en parte elastica y parte plastica, descripcion hiperelastica sencilla en funcion de deformaciones logaritmicas e integracion exponencial que conserva el volumen. Ademas, la estructura final del algoritmo es modular y relativamente sencilla, consistiendo en un pre- y un postprocesador geometrico y una correccion plastica realizada en pequenas deformaciones. El algoritmo esta consistentemente linealizado para conservar la convergencia cuadratica asintotica de los metodos de Newton y la forma final que toma dicha linealizacion es similar al caso de isotropia elastoplastica implementado; consiste en el modulo tangente algoritmico de pequenas deformaciones sobre el que se aplica una transformacion para convertirlo en el de grandes deformaciones. Todos estos modelos han sido implementados en un codigo propio de elementos finitos denominado DULCINEA, el cual tiene formulaciones lagrangianas totales y actualizadas para grandes deformaciones. Una de las tareas necesarias para poder realizar las simulaciones, ha sido el estudio e implementacion de diferentes elementos que no sufran el bloqueo volumetrico severo que se observa en formulaciones estandar basadas en desplazamientos. Este bloqueo se debe a la condicion de quasi-incompresibilidad que imponen los modelos de plasticidad desviadores y consiste en una respuesta exageradamente rigida de la solucion obtenida por el metodo de los elementos finitos estandar. Ent

  19. Lava Flows in the Grand Canyon

    NASA Technical Reports Server (NTRS)

    2003-01-01

    Over vast expanses of time, natural processes like floods and volcanoes deposit layers of rock on the Earth's surface. To delve down through layers of rock is to explore our planet's history. Sometimes rock layers are exposed through human activity, such as drilling or excavation. Other times, rivers carve through the rock. One of the best, and most well-known, examples of a river exposing ancient rocks is Colorado River in Arizona's Grand Canyon. What fewer people know is that the Grand Canyon also has a history of relatively recent (on geologic time scales) volcanism. The evidence--hardened lava--spills down the canyon walls all the way to the river. On June 22, 2003, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite captured this image of the Grand Canyon, near 36.2 degrees north latitude and 113.2 degrees west longitude. ASTER detects light visible to human eyes as well as 'invisible' infrared light. Because different minerals reflect different portions of the light spectrum, ASTER can see varying mineral compositions of the rocks it observes, as well as detecting vegetation. In this three-dimensional visualization, lava fields appear brownish gray, darker than the layers of limestone, sandstone and other rock in the canyon. Vegetation appears green, and sparsely vegetated areas appear mustard. Water in the Colorado River is blue-purple. Geologists estimate that between 1.8 million and 400,000 years ago, lava flows actually dammed the Colorado River more than a dozen times. Some of the lava dams were as high as 600 meters (about 1,969 feet), forming immense reservoirs. Over time, enough water and sediment built up to push the river flow over the tops of these dams and eventually erode them away. Today, remnants of these lava dams remain throughout the area, along with the much older rock layers they cover. Among the most well known examples of these 'frozen' lava cascades is Lava Falls, which spills down to the river next to a cinder cone known as Volcan's Throne. Numerous flows spread down into Whitmore Canyon, a Colorado River tributary, as well.

  20. Grand Unification with Intermediate Scale Gauge Symmetries

    NASA Astrophysics Data System (ADS)

    Keith, Evan J.

    Using the values of the gauge coupling constants at the scale M_{Z} derived from recent data from the CERN e^+e^ - collider LEP, we consider the breaking of the non-supersymmetric grand unification group SO(10) to the standard model gauge group through several chains. Some chains are ruled out from experimental constraints. We determine the intermediate and unification scales for chains containing one intermediate breaking scale by use of two -loop renormalization group equations with appropriate matching conditions. For the allowed chains, the intermediate scale is high, in the range of 10^9-10 ^{11} GeV. We also determine the range of intermediate and unification scales for chains containing two intermediate stages. We identify chains where new chargeless gauge bosons are possible at relatively low energy ({~}1 TeV), but as expected find none where extra light charged gauge bosons can occur. However in a supersymmetric version of SO(10) with a judicious choice of Higgs content, we find that, contrary to commonly held belief, the SU(2) _{R} breaking scale can be low and hence new charged bosons may be within the reach of existing or future colliders. We also look at an example of a larger group, SU(16), that provides the possibility for a rich low energy gauge structure. In addition, we investigate the status of predictive fermion mass ansatze which make use of the grand unification scale conditions m_{e} = m_ {d}/3, m_mu = 3m_{s }, and | V_{cb }| = sqrt{m_{c}/m _{t}} in non-supersymmetric SO(10) grand unification. The gauge symmetry below an intermediate symmetry breaking scale M_ {I} is assumed to be that of the standard model with either one Higgs doublet or two Higgs doublets. We find in both cases that a maximum of four standard model parameters may be predicted within 1sigma experimental ranges in addition to predicting the top mass. We also discuss the possibility of third generation Yukawa coupling unification in the two Higgs standard model which leads to a greater predictive ability but also requires a large top quark mass (>180 GeV) and constrains alpha_{3c}(M_{Z }) to be near its lower 1sigma bound.

  1. A morphological and molecular study of two species of Raphidascaroides Yamaguti, 1941 (Nematoda: Anisakidae), parasites of doradid catfish (Siluriformes) in South America, with a description of R. moraveci n. sp.

    PubMed

    Pereira, Felipe B; Tavares, Luiz E R; Scholz, Tomáš; Luque, José L

    2015-05-01

    Nematodes of the genus Raphidascaroides Yamaguti, 1941 parasitising doradid catfishes (Siluriformes: Doradidae) in Brazil were studied based on morphological and molecular evaluation of newly collected material. A new species, Raphidascaroides moraveci n. sp., is described from the intestine of Platydoras armatulus (Valenciennes) from River Miranda, River Paraguay basin, Pantanal, Mato Grosso do Sul. The new species differs from all of the congeners in having short spicules (163-217 ?m in length) representing less than 1% of the total body length and in the posterior region of cloacal opening covered by small rudimentary spines. In addition, it differs from the other congeneric species in the number and arrangement of the caudal papillae and the structure of lips and tail. Raphidascaroides moraveci n. sp. is the third species described from freshwater fishes and the second one in the Neotropical Region. New morphological data on R. brasiliensis Moravec & Thatcher, 1997 from Megalodoras uranoscopus (Eigenmann & Eigenmann) and Platydoras costatus (Linnaeus) (both new host records) from River Xingu, River Amazon basin, Pará, are provided including scanning electron micrographs of taxonomically important structures. The differentiation of the new species is supported by molecular data (partial sequences of the small and large subunits of the rRNA gene). PMID:25862032

  2. Grand Canyon Monitoring and Research Center

    NSDL National Science Digital Library

    Created in 1995, the Grand Canyon Monitoring and Research Center (GCMRC) was created in order to measure the effects of Glen Canyon Dam operations on natural and physical resources along the Colorado River. As such, the GCMRC's projects also monitor and examine the biological, cultural, and physical resources of the entire Colorado River ecosystem. The materials on their site are divided into five primary sections, including "News & Info", "Research", and "Products". In the "News & Info" area visitors can learn about the endangered species that reside in the area covered by the GCMRC and also take a look at their outreach materials, which include fact sheets, posters, and transcripts from recent symposia. The "Research" area is a bit more technical in nature, containing papers on water flow simulations and elevation data. The site is rounded out by the "Products" area, where visitors can look over new publications and evaluate simulation models.

  3. AIP/123-QED Modeling and simulation of a grand piano

    E-print Network

    Paris-Sud XI, Université de

    AIP/123-QED Modeling and simulation of a grand piano Juliette Chabassier and Patrick Joly Poems, France (Dated: April 30, 2013) Piano modeling 1 hal-00873089,version1-15Oct2013 Author manuscript;Abstract A time-domain global modeling of a grand piano is presented. The string model includes internal

  4. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Grand Canyon National Park. 7.4 Section 7.4 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR...SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.4 Grand...

  5. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 false Grand Canyon National Park. 7.4 Section 7.4 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR...SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.4 Grand...

  6. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 false Grand Canyon National Park. 7.4 Section 7.4 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR...SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.4 Grand...

  7. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 false Grand Canyon National Park. 7.4 Section 7.4 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR...SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.4 Grand...

  8. "No. 64. View of Grand River looking along the axis ...

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

    "No. 64. View of Grand River looking along the axis of proposed diversion dam. H.T.C., Aug. 20, 1913." - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  9. 20. VIEW OF GRAND CANAL, SHOWING OLD ALIGNMENT, LOOKING EAST ...

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

    20. VIEW OF GRAND CANAL, SHOWING OLD ALIGNMENT, LOOKING EAST FROM SOUTH BANK NEAR SETTLING BASIN (see HAER Photograph No. AZ-30-17, Crosscut Hydro Plant). THE LARGE FOREGROUND PIPE CARRIED WATER ACROSS THE CANAL FROM THE SETTLING BASIN TO THE CROSSCUT STEAM PLANT. Photographer: Mark Durben, April 1989 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

  10. Videoconferenced Grand Rounds: Needs Assessment for Community Specialists

    ERIC Educational Resources Information Center

    Sargeant, Joan; Allen, Michael; O'Brien, Brian; MacDougall, Eileen

    2003-01-01

    Introduction: Grand rounds are a traditional means of continuing education for specialist physicians. The purpose of this study was to determine the need for and feasibility of interactive videoconferenced grand rounds between an academic health center and community specialists practicing in the three provinces served by the health center.…

  11. IMPLEMENTATION OF AGRICULTURAL SALINITY CONTROL TECHNOLOGY IN GRAND VALLEY

    EPA Science Inventory

    A summary of the results of applied research on salinity control of irrigation return flows in the Grand Valley of Colorado is presented for the period of 1969 to 1976. Salinity and economic impacts are described for the Grand Valley Salinity Control Demonstration Project which c...

  12. Career fields: a small step towards a grand career theory?

    Microsoft Academic Search

    Alexander Iellatchitch; Wolfgang Mayrhofer; Michael Meyer

    2003-01-01

    Little theory development has been done that accounts for the changes in the forms, actors and contexts of careers that we currently can see. Looking at careers from a ‘grand’ and unified theoretical perspective has a number of advantages. In particular, grand social theories allow the link between a well-elaborated and differentiated framework for social phenomena and for careers. Moreover,

  13. "Dept. of Interior United States Reclamation Service Grand Valley Diversion ...

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

    "Dept. of Interior United States Reclamation Service Grand Valley Diversion Dam rolling crest sections of 70' roller specifications No. 285 January 1915" - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  14. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Grand Canyon National Park. 7.4 Section 7.4 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR...SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.4 Grand...

  15. 4. Photocopy of architectural blueprint (on file at La Grande ...

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

    4. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1939 OIL AND GAS BUILDING - Union Ranger District Compound, Oil & Gas House, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  16. Fishes Inhabiting the Rio Grande, Texas and Mexico, Between

    E-print Network

    of the Rio Grande can be divided into three faunal assemblages: The saline Rio Grande fauna (made up or part of their life history stages. Endangered species are found in the last assem blage but twoDepartment of Zoology, The University of severe flooding and Thomas (1963) reported highTexas, Austin, Texas

  17. THE "MUD VOLCANO," A STINKY THERMAL FEATURE ON THE GRAND ...

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

    THE "MUD VOLCANO," A STINKY THERMAL FEATURE ON THE GRAND LOOP ROAD. ACIDIC HOT SPRINGS HAVE REDUCED THE UNDERLYING LAVA TO A FINE CLAY, PRODUCING AN AREA OF BOILING MUD. THE ODOR OF ROTTEN EGGS IS FROM HYDROGEN SULFIDE GAS. - Grand Loop Road, Forming circuit between Mammoth Hot Springs, Norris Junction, Madison Junction, Old Faithful, Mammoth, Park County, WY

  18. 24. VIEW SHOWING WASTE GATES ON GRAND CANAL AT JUNCTION ...

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

    24. VIEW SHOWING WASTE GATES ON GRAND CANAL AT JUNCTION WITH OLD CROSSCUT NE/4, Sec. 7, TIN, R4E; LOOKING WEST. OLD CROSSCUT CANAL ENTERS FROM RIGHT. WASTE GATE ON LEFT EMPTIES INTO SALT RIVER BED Photographer: Kevin Kreisel-Coons, May 1990 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

  19. GrandTReNDS: the Grand Teton Reactive Nitrogen Deposition Study

    NASA Astrophysics Data System (ADS)

    Collett, J. L.; Benedict, K. B.; Prenni, A. J.; Day, D.; Li, Y.; Levin, E. J.; Sullivan, A. P.; Schurman, M. I.; Lee, T.; Desyaterik, Y.; Kreidenweis, S. M.; Schichtel, B. A.

    2012-12-01

    Increasing deposition of reactive nitrogen in recent decades has been shown to be adversely impacting ecosystems in the Rocky Mountain region of the western United States. Measurements in Rocky Mountain National Park (RMNP), in northern Colorado, have demonstrated that wet inputs of nitrate and ammonium routinely exceed the critical load established for the region. Additional contributions from dry deposition of gaseous ammonia and wet deposition of organic nitrogen have also been found to be substantial, although neither of these pathways has been traditionally included in routine monitoring networks nor are they included in regional critical load calculations. Less is known about reactive nitrogen deposition in other alpine ecosystems in the region. Here we present an overview of key findings from the 2011 Grand Teton Reactive Nitrogen Deposition Study (GrandTReNDS) conducted from April-September in a region centered around Grand Teton National Park (GTNP). A total of 14 measurement sites were established for the study, featuring a variety of continuous and time-integrated measurements of aerosol and trace gas composition and wet deposition. Prior to GrandTReNDS, there were was little information about air quality in GTNP. Study findings indicate a significant east-west gradient in atmospheric ammonia concentrations, with higher concentrations west of the Teton mountain range. Measured concentrations of nitric acid and PM2.5 nitrate and ammonium showed relatively small gradients from the west side to the east side of GTNP. As in RMNP, the four largest contributors to the GTNP reactive nitrogen deposition budget were wet deposition of ammonium, nitrate, and organic nitrogen, and dry deposition of ammonia. Ammonia dry deposition was found to be even more important in GTNP than in RMNP due to higher concentration levels and less abundant summertime precipitation.

  20. Seasonally Flooded Grasslands -Grand CaymanSeasonally Flooded Grasslands -Grand Cayman 0 1 2 3 4 50.5

    E-print Network

    Exeter, University of

    Seasonally Flooded Grasslands - Grand CaymanSeasonally Flooded Grasslands - Grand Cayman 0 1 2 3 4 Protected Areas Seasonally Flooded Grasslands V.A.1.N.g. #12;Seasonally Flooded Grasslands - Little CaymanSeasonally Flooded Grasslands - Little Cayman 0 0.5 1 1.5 2 2.50.25 Kilometers Cayman Islands National Biodiversity

  1. 77 FR 23242 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-18

    ...Grand Coulee Project Hydroelectric Authority; Notice...Grand Coulee Project Hydroelectric Authority filed an...f) of the Federal Power Act (FPA), proposing...17- foot-diameter power tunnels leading from...Grand Coulee Project Hydroelectric Authority,...

  2. 76 FR 43575 - Amendment of Class E Airspace; Grand Marais, MN

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-21

    ...Amendment of Class E Airspace; Grand Marais, MN AGENCY: Federal Aviation Administration...amends Class E airspace for Grand Marais, MN, to accommodate new Area Navigation (RNAV...amend Class E airspace for Grand Marais, MN, creating additional controlled...

  3. 76 FR 28687 - Proposed Amendment of Class E Airspace; Grand Marais, MN

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-18

    ...Amendment of Class E Airspace; Grand Marais, MN AGENCY: Federal Aviation Administration...amend Class E airspace at Grand Marais, MN. Additional controlled airspace is necessary...Marais/Cook County Airport, Grand Marais, MN. Controlled airspace is needed for...

  4. 77 FR 31344 - Grand Valley Irrigation Company; Notice of Application Accepted for Filing and Soliciting...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-25

    ...Project No. 14377-000] Grand Valley Irrigation Company; Notice of Application Accepted...2012. d. Applicant: Grand Valley Irrigation District. e. Name of Project: Dividers...would be located on the Grand Valley Irrigation Canal where the Mainline canal...

  5. 76 FR 56966 - Amendment of Class D and Modification of Class E Airspace; Grand Junction, CO

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-15

    ...Modification of Class E Airspace; Grand Junction, CO AGENCY: Federal Aviation Administration...modifies Class E airspace at Grand Junction, CO. Additional controlled airspace is necessary...controlled airspace at Grand Junction, CO (76 FR 40293). Interested parties...

  6. 75 FR 30428 - Notice of Inventory Completion: U.S. Department of the Interior, National Park Service, Grand...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-01

    ...Department of the Interior, National Park Service, Grand Canyon National Park, Grand Canyon, AZ AGENCY: National Park Service, Interior...Department of the Interior, National Park Service, Grand Canyon National Park, Grand Canyon, AZ. The...

  7. Grand challenge scientific questions in coupled modeling

    NASA Technical Reports Server (NTRS)

    Koch, Steven

    1993-01-01

    Most convective field experiments in the past (e.g., SESAME, CCOPE, CINDE) have attempted to resolve only the immediate scales of moist convection using network arrays that spanned two or three atmospheric scales at most. Furthermore, these scales have been defined more on practical considerations (cost, manpower, etc.) than on a clear understanding of their theoretical significance. Unfortunately, this has precluded a description of the entire life cycle of MCS's and their interaction with larger scale systems, the land surface, and trace species. Fortunately, the following factors now make it possible to attempt to simulate scale contraction processes from the synoptic scale down to the cloud scale, as well as interactions between complex meteorological, land surface, precipitation, chemical, and hydrologic processes with coupled, multiscale models: the availability of new technology to sample meteorological fields at high temporal and spatial resolution over a broad region made possible by the weather observing modernization program; increased computer power and improved numerical approaches to run limited area models with nonhydrostatic precipitation physics so as to explicitly resolve MCS (Mesoscale Convective System) processes; and four dimensional assimilation of non-conventional data to provide dynamically consistent datasets for diagnostic analysis of nonlinear scale-interactive dynamics. Several examples of scale-interactive processes which present grand challenges for coupled, multiscale modeling were presented.

  8. Coordinating the Atlantis Grand Opening Event

    NASA Technical Reports Server (NTRS)

    Smith, Abigail Allaine

    2013-01-01

    While working as the marketing intern for Kennedy Space Center's (KSC) Center Planning and Development Directorate (CPD), I was given the opportunity not only to learn new skills and expand my work experience under the powerful influence of NASA, but I also was given the opportunity to prove that I am an individual capable of contributing to the KSC team. My main responsibility while working in CPD was to organize and run a booth that represented the entire directorate at the Grand Opening of the Shuttle Atlantis exhibit during the weekend of June 28-30. This event was important for CPD because as a Directorate that markets KSC's facilities, technical capabilities and technologies to potential partners, it is important to attend all events and use them to gain an understanding of our audience. Although we catered mostly to the general public during this event, it was still important to reach out to the larger space enthusiast community and let them know about KSC's future plans to become a multi-user spaceport and that teclmology is still being developed.

  9. Modeling and simulation of a grand piano.

    PubMed

    Chabassier, Juliette; Chaigne, Antoine; Joly, Patrick

    2013-07-01

    A time-domain global modeling of a grand piano is presented. The string model includes internal losses, stiffness, and geometrical nonlinearity. The hammer-string interaction is governed by a nonlinear dissipative compression force. The soundboard is modeled as a dissipative bidimensional orthotropic Reissner-Mindlin plate where the presence of ribs and bridges is treated as local heterogeneities. The coupling between strings and soundboard at the bridge allows the transmission of both transverse and longitudinal waves to the soundboard. The soundboard is coupled to the acoustic field, whereas all other parts of the structure are supposed to be perfectly rigid. The acoustic field is bounded artificially using perfectly matched layers. The discrete form of the equations is based on original energy preserving schemes. Artificial decoupling is achieved, through the use of Schur complements and Lagrange multipliers, so that each variable of the problem can be updated separately at each time step. The capability of the model is highlighted by series of simulations in the low, medium, and high register, and through comparisons with waveforms recorded on a Steinway D piano. Its ability to account for phantom partials and precursors, consecutive to string nonlinearity and inharmonicity, is particularly emphasized. PMID:23862839

  10. Local Grand Unification in the Heterotic Landscape

    E-print Network

    Jonas Schmidt

    2009-09-03

    We consider the possibility that the unification of the electroweak interactions and the strong force arises from string theory, at energies significantly lower than the string scale. As a tool, an effective grand unified field theory in six dimensions is derived from an anisotropic orbifold compactification of the heterotic string. It is explicitly shown that all anomalies cancel in the model, though anomalous Abelian gauge symmetries are present locally at the boundary singularities. In the supersymmetric vacuum additional interactions arise from higher-dimensional operators. We develop methods that relate the couplings of the effective theory to the location of the vacuum, and find that unbroken discrete symmetries play an important role for the phenomenology of orbifold models. An efficient algorithm for the calculation of the superpotential to arbitrary order is developed, based on symmetry arguments. We furthermore present a correspondence between bulk fields of the orbifold model in six dimensions, and the moduli fields that arise from compactifying four internal dimensions on a manifold with non-trivial gauge background.

  11. "P8400564 Grand Valley Project view of GV Diversion Dam ...

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

    "P8-400-564 Grand Valley Project - view of GV Diversion Dam on Col. River completed in 1915 by BOR to divert water to irrigate the Grand Valley Project. 7-18-58 by Stan Rasmussen." Note integration of the dam and canal headgate at center left, proximity of the river and railroad tracks at lower left, and gatekeeper's house on lower right - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  12. The DARPA grand challenge - development of an autonomous vehicle

    Microsoft Academic Search

    Reinhold Behringer; Sundar Sundareswaran; Brian Gregory; Richard Elsley; Bob Addison; Wayne Guthmiller; Robert Daily; David Bevly

    2004-01-01

    The DARPA Grand Challenge (DGC) was an opportunity to test autonomous vehicles in a competitive situation. In addition to intelligent behaviour, the participating vehicles must also exhibit ruggedness and endurance in order to survive the fast ride over rough terrain (\\

  13. 33 CFR 117.447 - Grand Cabahanosse Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.447 Grand Cabahanosse Bayou. The draw of the S70 bridge, mile 7.6 near Paincourtville, shall open on...

  14. 33 CFR 117.447 - Grand Cabahanosse Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.447 Grand Cabahanosse Bayou. The draw of the S70 bridge, mile 7.6 near Paincourtville, shall open on...

  15. 33 CFR 117.447 - Grand Cabahanosse Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.447 Grand Cabahanosse Bayou. The draw of the S70 bridge, mile 7.6 near Paincourtville, shall open on...

  16. 33 CFR 117.478 - Lower Grand River.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.478 Lower Grand River. (a) The draw of the LA 75 bridge, mile 38.4 (Alternate Route) at...

  17. 33 CFR 117.447 - Grand Cabahanosse Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.447 Grand Cabahanosse Bayou. The draw of the S70 bridge, mile 7.6 near Paincourtville, shall open on...

  18. 33 CFR 117.478 - Lower Grand River.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.478 Lower Grand River. (a) The draw of the LA 75 bridge, mile 38.4 (Alternate Route) at...

  19. 59. PLANS FOR HEADGATE INSTALLATION IN GRAND CANAL AT WASHINGTON ...

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

    59. PLANS FOR HEADGATE INSTALLATION IN GRAND CANAL AT WASHINGTON STREET Plan Sheet D-13360, Sheet No. 15 of 20 (delineated by D. Hee, May 1957) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  20. Habitat Appraisal Guide for Rio Grande Wild Turkey

    E-print Network

    Cathey, James; Locke, Shawn; Ransom, Dean; DeMaso, Stephen; Schwertner, T. Wayne; Collier, Bret

    2007-09-04

    The Rio Grande wild turkey habitat appraisal guide gives landowners and managers a standardized, systematic way to evaluate current habitat conditions. It can be used to identify limiting factors. It also contains suggestions for improving...

  1. Grande Ronde Basin Fish Habitat Enhancement Project : 1998 Annual Report.

    SciTech Connect

    McGowan, Vance R.; Powell, Russ M.

    1999-05-01

    The primary goal of ''The Grande Ronde Basin Fish Habitat Improvement Project'' is to access, create, improve, protect, and restore reparian and instream habitat for anadromous salmonids, thereby maximizing opportunities for natural fish production within the basin.

  2. Research Article Rio Grande Wild Turkey Habitat Selection in the

    E-print Network

    , USA ABSTRACT We recorded telemetry locations from 1,129 radiotagged turkeys (Meleagris gallopavo cattle grazing, habitat use, Meleagris gallopavo intermedia, nesting ecology, Rio Grande wild turkey. Interactions between cattle and wild turkeys (Meleagris gallopavo) varied depending on local habitat

  3. Cambridge Grand Junction transit implementation : alternatives, scheduling, cost, and performance

    E-print Network

    Iglesias Cuervo, Jesus

    2012-01-01

    The Grand Junction railroad lies at the heart of East Cambridge adjacent to the Kendall Square business district and the Massachusetts Institute of Technology campus. Over the last one hundred years the railroad has gone ...

  4. Wil Wheaton and the Grand Entrance - Duration: 4:07.

    NASA Video Gallery

    As NASA prepares for Curiosity rover landing on Mars, Wil Wheaton shares this thrilling story of NASA's hardest planetary science mission to date. The video titled, "Grand Entrance," guides viewers...

  5. 72. 451 MADISON AVENUE, GRAND STAIR, ZODIAC CLOCK WITH DECORATIVE ...

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

    72. 451 MADISON AVENUE, GRAND STAIR, ZODIAC CLOCK WITH DECORATIVE CARVING BY STANFORD WHITE AND AUGUSTUS SAINT-GAUDENS - Villard Houses, 451-457 Madison Avenue & 24 East Fifty-first Street, New York, New York County, NY

  6. Stanley: The Robot That Won the DARPA Grand Challenge

    Microsoft Academic Search

    Sebastian Thrun; Mike Montemerlo; Hendrik Dahlkamp; David Stavens; Andrei Aron; James Diebel; Philip Fong; John Gale; Morgan Halpenny; Gabriel Hoffmann; Kenny Lau; Celia Oakley; Mark Palatucci; Vaughan Pratt; Pascal Stang; Sven Strohband; Cedric Dupont; Lars-Erik Jendrossek; Christian Koelen; Charles Markey; Carlo Rummel; Joe van Niekerk; Eric Jensen; Philippe Alessandrini; Gary Bradski; Bob Davies; Scott Ettinger; Adrian Kaehler; Ara Nefian; Pamela Mahoney

    This article describes the robot Stanley, which won the 2005 DARPA Grand Challenge. Stanley was developed for high-speed desert\\u000a driving without human intervention. The robot’s software system relied predominately on state-of-the-art AI technologies,\\u000a such as machine learning and probabilistic reasoning. This article describes the major components of this architecture, and\\u000a discusses the results of the Grand Challenge race.

  7. American Grand Strategy in a World at Risk

    Microsoft Academic Search

    Walter Russell Mead

    2005-01-01

    If there is no single long-standing American grand strategy, one nonetheless sees through the course of U.S. history the tracks of a grand strategy. It started with the idea of a U.S. monopoly in the Western Hemisphere, along with balances of power in the chief theaters of the world; with belief in the primacy of sea and air power and

  8. 8. VIEW SHOWING THE DEMOSSING OF GRAND CANAL LOCATION UNKNOWN. ...

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

    8. VIEW SHOWING THE DEMOSSING OF GRAND CANAL LOCATION UNKNOWN. AT TEAM OF HORSES ON OPPOSITE BANKS OF THE CANAL DRAG A CHAIN BETWEEN THEM ALONG THE BOTTOM OF THE CANAL, WHICH PULLS THE MOSS AND WEEDS LOOSE. THE PLANS THEN FLOAT DOWN THE CANAL AND ARE CAUGHT IN A SCREEN AND REMOVED. Photographer unknown, 1923 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

  9. Grand multiparity: is it still a risk in pregnancy?

    PubMed Central

    2013-01-01

    Background The association of grand multiparity and poor pregnancy outcome has not been consistent for decades. Classifying grand multiparous women as a high-risk group without clear evidence of a consistent association with adverse outcomes can lead to socioeconomic burdens to the mother, family and health systems. We compared the maternal and perinatal complications among grand multiparous and other multiparous women in Dar es Salaam in Tanzania. Methods A cross-sectional study was undertaken at Muhimbili National Hospital (MNH). A standard questionnaire enquired the following variables: demographic characteristics, antenatal profile and detected obstetric risk factors as well as maternal and neonatal risk factors. Predictors of adverse outcomes in relation to grand multiparous women were assessed at p?=?0.05. Results Grand multiparas had twice the likelihood of malpresentation and a threefold higher prevalence of meconium-stained liquor and placenta previa compared with lower-parity women even when adjusted for age. Neonates delivered by grand multiparous women (12.1%) were at three-time greater risk of a low Apgar score compared with lower-parity women (5.4%) (odds ratio (OR), 2.9; 95% confidence interval (CI), 1.5–5.0). Grand multiparity and low birth weight were independently associated with a low Apgar score (OR, 2.4; 95%, CI 1.4–4.2 for GM; OR, 4.2; 95% CI, 2.3–7.8) for low birth weight. Conclusion Grand multiparity remains a risk in pregnancy and is associated with an increased prevalence of maternal and neonatal complications (malpresentation, meconium-stained liquor, placenta previa and a low Apgar score) compared with other multiparous women who delivered at Muhimbili National Hospital. PMID:24365087

  10. Methods toward improving 'Grande Rio 66' pepper seed germination

    E-print Network

    Rogers, Barbara Anna

    1980-01-01

    METHODS TOWARD IMPROVING 'GRANDE RIO 66' PEPPER SEED GERMINATION A Thesis by BARBARA ANNA ROGERS Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May... 1980 Major Subject: Horticulture METHODS TONARD IMPROVING 'GRANDE RIO 66' PEPPER SEED GERMINATION A Thesis by BARBARA ANNA ROGERS Approved as to style and content by: Chairman of Committee Head of epartment em er Member May 1980 ABSTRACT...

  11. Grand Unification as a Bridge Between String Theory and Phenomenology

    Microsoft Academic Search

    Jogesh C. Pati

    2006-01-01

    In the first part of the talk, I explain what empirical evidence points to the need for having an effective grand unification-like symmetry possessing the symmetry SU(4)-color in 4D. If one assumes the premises of a future predictive theory including gravity--be it string\\/M theory or a reincarnation--this evidence then suggests that such a theory should lead to an effective grand

  12. Thermomechanical models of the Rio Grande rift

    SciTech Connect

    Bridwell, R.J.; Anderson, C.A.

    1980-01-01

    Fully two-dimensional, coupled thermochemical solutions of a continental rift and platform are used to model the crust and mantle structure of a hot, buoyant mantle diapir beneath the Rio Grande rift. The thermomechanical model includes both linear and nonlinear laws of the Weertman type relating shear stress and creep strain rate, viscosity which depends on temperature and pressure, and activation energy, temperature-dependent thermal conductivity, temperature-dependent coefficient of thermal expansion, the Boussinesq approximation for thermal bouyancy, material convection using a stress rate that is invariant to rigid rotations, an elastically deformable crust, and a free surface. The model determines the free surface velocities, solid state flow field in the mantle, and viscosity structure of lithosphere and asthenosphere. Regional topography and crustal heat flow are simulated. A suite of symmetric models, assumes continental geotherms on the right and the successively increasing rift geotherms on the left. These models predict an asthenospheric flow field which transfers cold material laterally toward the rift at > 300 km, hot, buoyant material approx. 200 km wide which ascends vertically at rates of 1 km/my between 175 to 325 km, and spreads laterally away from the rift at the base of the lithosphere. Crustal spreading rates are similar to uplift rates. The lithosphere acts as stiff, elastic cap, damping upward motion through decreased velocities of 1 km/10 my and spreading uplift laterally. A parameter study varying material coefficients for the Weertman flow law suggests asthenospheric viscosities of approx. 10/sup 22/ to 10/sup 23/ poise. Similar studies predict crustal viscosities of approx. 10/sup 25/ poise. The buoyant process of mantle flow narrows and concentrates heat transport beneath the rift, increases upward velocity, and broadly arches the lithosphere. 10 figures, 1 table.

  13. 3D View of Grand Canyon, Arizona

    NASA Technical Reports Server (NTRS)

    2000-01-01

    The Grand Canyon is one of North America's most spectacular geologic features. Carved primarily by the Colorado River over the past six million years, the canyon sports vertical drops of 5,000 feet and spans a 445-kilometer-long stretch of Arizona desert. The strata along the steep walls of the canyon form a record of geologic time from the Paleozoic Era (250 million years ago) to the Precambrian (1.7 billion years ago).

    The above view was acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument aboard the Terra spacecraft. Visible and near infrared data were combined to form an image that simulates the natural colors of water and vegetation. Rock colors, however, are not accurate. The image data were combined with elevation data to produce this perspective view, with no vertical exaggeration, looking from above the South Rim up Bright Angel Canyon towards the North Rim. The light lines on the plateau at lower right are the roads around the Canyon View Information Plaza. The Bright Angel Trail, which reaches the Colorado in 11.3 kilometers, can be seen dropping into the canyon over Plateau Point at bottom center. The blue and black areas on the North Rim indicate a forest fire that was smoldering as the data were acquired on May 12, 2000.

    Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is one of five Earth-observing instruments launched December 18, 1999, on NASA's Terra satellite. The instrument was built by Japan's Ministry of International Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products. Dr. Anne Kahle at NASA's Jet Propulsion Laboratory, Pasadena, Calif., is the U.S. Science team leader; Moshe Pniel of JPL is the project manager. ASTER is the only high resolution imaging sensor on Terra. The primary goal of the ASTER mission is to obtain high-resolution image data in 14 channels over the entire land surface, as well as black and white stereo images. With revisit time of between 4 and 16 days, ASTER will provide the capability for repeat coverage of changing areas on Earth's surface.

    The broad spectral coverage and high spectral resolution of ASTER will provide scientists in numerous disciplines with critical information for surface mapping, and monitoring dynamic conditions and temporal change. Example applications are: monitoring glacial advances and retreats, monitoring potentially active volcanoes, identifying crop stress, determining cloud morphology and physical properties, wetlands Evaluation, thermal pollution monitoring, coral reef degradation, surface temperature mapping of soils and geology, and measuring surface heat balance.

  14. Coral associations of the Pleistocene Ironshore Formation, Grand Cayman

    NASA Astrophysics Data System (ADS)

    Hunter, I. G.; Jones, B.

    1996-11-01

    The 125-ka sea level, which was approximately 6 m above present-day sea level, led to the partial flooding of many Caribbean islands. On Grand. Cayman, this event led to the formation of the large Ironshore Lagoon that covered most of the western half of the island and numerous, small embayments along the south, east, and north coasts. At that time, at least 33 coral species grew in waters around Grand Cayman. This fauna, like the modern coral fauna of Grand Cayman, was dominated by Montastrea annularis, Porites porites, Acropora polmata, and A. cervicornis. Scolymia cubensis and Mycetophyllia ferox, not previously identified from the Late Pleistocene, are found in the Pleistocene patch reefs. Madracis mirabilis, Colpophyllia breviserialis, Agaricia tenuifolia, A. lamarcki, A. undata, Millepora spp., Mycetophyllia reesi, M. aliciae, and M. danaana, found on modern reefs, have not been identified from the Late Pleistocene reefs. Conversely, Pocillopora sp. cf. P. palmata, which is found in Late Pleistocene reefs, is absent on the modern reefs around Grand Cayman. The corals in the Ironshore Formation of Grand Cayman have been divided into 10 associations according to their dominant species, overall composition, and faunal diversity. Many of these associations are similar to the modern associations around Grand Cayman. Each of the Pleistocene coral associations, which can be accurately located on the known Late Pleistocene paleogeography of Grand Cayman, developed in distinct environmental settings. Overall trends identified in the modern settings are also apparent in the Late Pleistocene faunas. Thus, the diversity of the coral faunas increased from the interior of the Ironshore Lagoon to the reef crest. Similarly, the coral diversity in the Pleistocene patch reefs was related to the size of the reefs and their position relative to breaks in the barrier reef. The barrier reef included corals that are incapable of sediment rejection; whereas the patch reefs lacked such corals.

  15. Populating a Control Point Database: A cooperative effort between the USGS, Grand Canyon Monitoring and Research Center and the Grand Canyon Youth Organization

    Microsoft Academic Search

    K. M. Brown; C. Fritzinger; E. Wharton

    2004-01-01

    The Grand Canyon Monitoring and Research Center measures the effects of Glen Canyon Dam operations on the resources along the Colorado River from Glen Canyon Dam to Lake Mead in support of the Grand Canyon Adaptive Management Program. Control points are integral for geo-referencing the myriad of data collected in the Grand Canyon including aerial photography, topographic and bathymetric data

  16. Environmental Audit of the Grand Junction Projects Office

    SciTech Connect

    Not Available

    1991-08-01

    The Grand Junction Projects Office (GJPO) is located in Mesa County, Colorado, immediately south and west of the Grand Junction city limits. The US Atomic Energy Commission (AEC) established the Colorado Raw Materials Office at the present-day Grand Junction Projects Office in 1947, to aid in the development of a viable domestic uranium industry. Activities at the site included sampling uranium concentrate; pilot-plant milling research, including testing and processing of uranium ores; and operation of a uranium mill pilot plant from 1954 to 1958. The last shipment of uranium concentrate was sent from GJPO in January, 1975. Since that time the site has been utilized to support various DOE programs, such as the former National Uranium Resource Evaluation (NURE) Program, the Uranium Mill Tailings Remedial Action Project (UMTRAP), the Surplus Facilities Management Program (SFMP), and the Technical Measurements Center (TMC). All known contamination at GJPO is believed to be the result of the past uranium milling, analyses, and storage activities. Hazards associated with the wastes impounded at GJPO include surface and ground-water contamination and potential radon and gamma-radiation exposure. This report documents the results of the Baseline Environmental Audit conducted at Grand Junction Projects Office (GJPO) located in Grand Junction, Colorado. The Grand Junction Baseline Environmental Audit was conducted from May 28 to June 12, 1991, by the Office of Environmental Audit (EH-24). This Audit evaluated environmental programs and activities at GJPO, as well as GJPO activities at the State-Owned Temporary Repository. 4 figs., 12 tabs.

  17. Regional economic impacts of Grand Canyon river runners.

    PubMed

    Hjerpe, Evan E; Kim, Yeon-Su

    2007-10-01

    Economic impact analysis (EIA) of outdoor recreation can provide critical social information concerning the utilization of natural resources. Outdoor recreation and other non-consumptive uses of resources are viewed as environmentally friendly alternatives to extractive-type industries. While outdoor recreation can be an appropriate use of resources, it generates both beneficial and adverse socioeconomic impacts on rural communities. The authors used EIA to assess the regional economic impacts of rafting in Grand Canyon National Park. The Grand Canyon region of northern Arizona represents a rural US economy that is highly dependent upon tourism and recreational expenditures. The purpose of this research is twofold. The first is to ascertain the previously unknown regional economic impacts of Grand Canyon river runners. The second purpose is to examine attributes of these economic impacts in terms of regional multipliers, leakage, and types of employment created. Most of the literature on economic impacts of outdoor recreation has focused strictly on the positive economic impacts, failing to illuminate the coinciding adverse and constraining economic impacts. Examining the attributes of economic impacts can highlight deficiencies and constraints that limit the economic benefits of recreation and tourism. Regional expenditure information was obtained by surveying non-commercial boaters and commercial outfitters. The authors used IMPLAN input-output modeling to assess direct, indirect, and induced effects of Grand Canyon river runners. Multipliers were calculated for output, employment, and income. Over 22,000 people rafted on the Colorado River through Grand Canyon National Park in 2001, resulting in an estimated $21,100,000 of regional expenditures to the greater Grand Canyon economy. However, over 50% of all rafting-related expenditures were not captured by the regional economy and many of the jobs created by the rafting industry are lower-wage and seasonal. Policy recommendations are given for increasing the regional retention of rafting expenditures and for understanding both the beneficial and adverse impacts that accompany outdoor recreation in rural areas. PMID:17070647

  18. OBSIDIAN CLIFF OVERLOOKS THE EAST SIDE OF THE GRAND LOOP ...

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

    OBSIDIAN CLIFF OVERLOOKS THE EAST SIDE OF THE GRAND LOOP ROAD. THE OBSIDIAN, A BLACK VOLCANIC GLASS, FORMED WHEN A LAVA FLOW CONTACTED GLACIAL ICE. IN THE CONSTRUCTION OF THE ROAD BY THE U.S. ARMY CORPS OF ENGINEERS, WORKERS CREATED THE LEDGE FOR THE ROAD BY BUILDING LARGE BONFIRES AGAINST THE CLIFF, THEN DASHING THE HEATED ROCK WITH COLD WATER, CAUSING IT TO SHATTER. - Grand Loop Road, Forming circuit between Mammoth Hot Springs, Norris Junction, Madison Junction, Old Faithful, Mammoth, Park County, WY

  19. The Verifying Compiler, a Grand Challenge for Computing Research

    Microsoft Academic Search

    C. A. R. Hoare

    2005-01-01

    \\u000a I propose a set of criteria which distinguish a grand challenge in science or engineering from the many other kinds of short-term\\u000a or long-term research problems that engage the interest of scientists and engineers.\\u000a \\u000a \\u000a The primary purpose of the formulation and promulgation of a grand challenge is to contribute to the advancement of some branch\\u000a of science or engineering. A

  20. Noncommutative geometry, Grand Symmetry and twisted spectral triple

    E-print Network

    Devastato, Agostino

    2015-01-01

    In the noncommutative geometry approach to the standard model we discuss the possibility to derive the extra scalar field sv- initially suggested by particle physicist to stabilize the electroweak vacuum - from a "grand algebra" that contains the usual standard model algebra. We introduce the Connes-Moscovici twisted spectral triples for the Grand Symmetry model, to cure a technical problem, that is the appearance, together with the field sv, of unbounded vectorial terms. The twist makes these terms bounded, and also permits to understand the breaking making the computation of the Higgs mass compatible with the 126 GeV experimental value.

  1. Noncommutative geometry, Grand Symmetry and twisted spectral triple

    E-print Network

    Agostino Devastato

    2015-03-09

    In the noncommutative geometry approach to the standard model we discuss the possibility to derive the extra scalar field sv- initially suggested by particle physicist to stabilize the electroweak vacuum - from a "grand algebra" that contains the usual standard model algebra. We introduce the Connes-Moscovici twisted spectral triples for the Grand Symmetry model, to cure a technical problem, that is the appearance, together with the field sv, of unbounded vectorial terms. The twist makes these terms bounded, and also permits to understand the breaking making the computation of the Higgs mass compatible with the 126 GeV experimental value.

  2. The Grand Geochemistry of 4 Vesta: First Results

    NASA Technical Reports Server (NTRS)

    Prettyman, T. H.; Beck, A.; Feldman, W. C.; Forni, O.; Joy, S. P.; Lawrence, D. J.; McCoy T. J.; McFadden, L. A.; McSween, H. Y.; Mittlefehldt, D. W.; Polanskey, C. A.; Rayman, M. D.; Raymond, C. A.; Reedy, R. C.; Russell, C. T.; Titus, T. N.; Toplis, M. J.; Yamashita, N.

    2012-01-01

    On 12-Dec-2011, the Dawn spacecraft commenced low altitude mapping of the giant asteroid, 4 Vesta (264-km mean radius). Dawn's roughly circular, polar, low altitude mapping orbit (LAMO) has a mean radius of 470 km, placing the spacecraft within about 210 km of Vesta's surface. At these altitudes, Dawn s Gamma Ray and Neutron Detector (GRaND) is sensitive to Vesta's elemental com-position (Fig. 1). GRaND will acquire data in LAMO for up to 16 weeks, which is sufficient to map the elemental composition of the entire surface of Vesta. The timing of LAMO enables us to report the first results of our geochemistry investigation at this conference. In this abstract, we present an overview of our initial observations, based on data acquired at high altitude and during the first weeks of LAMO. GRaND overview. A detailed description of the GRaND instrument, science objectives and prospective results is given in [1]. At low altitudes, GRaND is sensitive to gamma rays and neutrons produced by cosmogenic nuclear reactions and radioactive decay occurring within the top few decimeters of the surface and on a spatial scale of a few hundred kilometers. From these nuclear emissions, the abundance of several major- and minor-elements, such as Fe, Mg, Si, K, and Th can be determined. Assuming the howardite, eucrite, and diogenite (HED) meteorites are representative of Vesta s crustal composition [2], then GRaND will be able to map the mixing ratios of whole-rock HED end-members, enabling the determination of the relative proportions of basaltic eucrite, cumulate eucrite, and diogenite as well as the proportions of mafic and plagioclase minerals [1,3]. GRaND will also search for compositions not well-represented in the meteorite collection, such as evolved, K-rich lithologies [4], and outcrops of olivine from Vesta s mantle or igneous intrusions in major impact basins [5]. The search for a possible mesosiderite source region is described in [6]. GRaND will globally map the abundance of H, providing constraints on the delivery of H by solar wind and the infall of carbonaceous chondrite materials.

  3. Grands Are Grand: A Cross-Generational Learning Experience at the North Museum of Natural History and Science

    NSDL National Science Digital Library

    Esther D. Wahlberg

    2008-01-01

    Grands Are Grand is a monthly informal science program for children ages 3-5 and their grandparents offered by the North Museum of Natural History and Science in Lancaster, Pennsylvania. The lessons include a wide variety of touchable, visual, and audible materials that present opportunities for active exploration and learning. Children are able to touch live animals, feel their skins and skeletons, and watch how they move. By mixing formal presentation with active engagement, the program focuses on the needs of preschool children.

  4. Solving Computational Grand Challenges Using a Network of Heterogeneous Supercomputers

    Microsoft Academic Search

    Adam Beguelin; Jack Dongarra; Al Geist; Robert Manchek; Vaidy S. Sunderam

    1991-01-01

    . This paper describes experiments connecting a Cray XMP, Intel iPSC\\/860,and Thinking Machines CM2 together over a high speed network to form a much larger virtualcomputer. The purpose of the experiments is to demonstrate the power and flexibilityof the PVM (Parallel Virtual Machine) system to allow programmers to exploit a diversecollection of the most powerful computers available to solve Grand

  5. Measuring Stream Discharge in Grand Teton National Park

    USGS Multimedia Gallery

    USGS hydrologic technician Bob Reaves collects streamflow measurements from the cableway at the USGS streamgage on the Snake River near Moran, WY. Jackson Lake Dam is shown in the background. Location: USGS streamgage station 13011000, Snake River near Moran, WY, Grand Teton National Park. &nb...

  6. 'BEST MANAGEMENT PRACTICES' FOR SALINITY CONTROL IN GRAND VALLEY

    EPA Science Inventory

    A nontechnical summary of several research activities in the Grand Valley is given. Analyses of alternative measures of reducing the salt load originating from the Valley as a result of irrigation return flows are presented. These alternatives include conveyance channel linings, ...

  7. 54. PAGE TWO OF PLANS FOR EXISTING GRAND CANAL COURT ...

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

    54. PAGE TWO OF PLANS FOR EXISTING GRAND CANAL COURT (VIRGINIA COURT) ARCHED PEDESTRIAN BRIDGE OVER CARROLL CANAL Plan Sheet D-26358, Sheet No. 2 of 6 (delineated by Richard G. Carrizosa, January 1978) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  8. 57. PAGE FIVE OF PLANS FOR EXISTING GRAND CANAL COURT ...

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

    57. PAGE FIVE OF PLANS FOR EXISTING GRAND CANAL COURT (VIRGINIA COURT) ARCHED PEDESTRIAN BRIDGE OVER CARROLL CANAL Plan Sheet D-26358, Sheet No. 5 of 6 (delineated by Richard G. Carrizosa, January 1978) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  9. 65. PLANS FOR PROPOSED ARCHED BRIDGE OVER GRAND CANAL AT ...

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

    65. PLANS FOR PROPOSED ARCHED BRIDGE OVER GRAND CANAL AT 25TH AVENUE Plan Sheet D-29887, Venice Canals Pedestrian Bridges Replacement, Sheet No. 10 of 14 (delineated by Manuel Bartolome, June 1990) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  10. 55. PAGE THREE OF PLANS FOR EXISTING GRAND CANAL COURT ...

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

    55. PAGE THREE OF PLANS FOR EXISTING GRAND CANAL COURT (VIRGINIA COURT) ARCHED PEDESTRIAN BRIDGE OVER CARROLL CANAL Plan Sheet D-26358, Sheet No. 3 of 6 (delineated by William Loo, January 1978) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  11. 56. PAGE FOUR OF PLANS FOR EXISTING GRAND CANAL COURT ...

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

    56. PAGE FOUR OF PLANS FOR EXISTING GRAND CANAL COURT (VIRGINIA COURT) ARCHED PEDESTRIAN BRIDGE OVER CARROLL CANAL Plan Sheet D-26358, Sheet No. 4 of 6 (delineated by William Loo, January 1978) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  12. Basement extension and salt mobility, southern Grand Banks, Newfoundland

    SciTech Connect

    Balkwill, H.R.; Legall, F.

    1986-05-01

    The Grand Banks, an especially wide cratonic segment of the North American Atlantic continental shelf, extended vigorously during Late Triassic-Aptian rift-phase episodes, accompanied by syntectonic basin filling and large-scale structural disruption. Thereafter, the rift-disrupted domain underwent drift-phase subsidence and was buried by a seaward-prograding continental terrace wedge, in which progressively feeble extension is evident. Rift-faulted cratonic basement is perceptible on industry-acquired reflection seismic profiles from the southern Grand Banks. The profiles also show that Carboniferous and Lower Jurassic salt were the main levels of supracrustal detachment during Jurassic and Early Cretaceous extension. Large salt-mobilized structures within the rift-phase succession include fault-zone sheaths, elongate pillows, aligned piercement spires, and immense walls. These elements parallel large extension faults in basement and, in many places, are superposed on the faults. In striking contrast, upper Aptian and younger drift-phase strata are regionally subhorizontal, and are broken to middle and late Tertiary stratigraphic levels by only a few small extension faults and aligned diapirs. The authors interpret the structural/stratigraphic relationships in the southern Grand Banks to indicate that episodic Mesozoic and Cenozoic basement extension was the principal dynamic agent in determining the timing of salt structures, their orientations, and styles of disruption on enclosing strata. This genetic association may be applicable to other parts of the Grand Banks tectonic province, and possibly to other extensional cratonic margin basins.

  13. 45. INTERIOR, FIRST FLOOR, SOUTHEAST CORNER OF GRAND STAIRCASE (STAIRS ...

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

    45. INTERIOR, FIRST FLOOR, SOUTHEAST CORNER OF GRAND STAIRCASE (STAIRS G), SIDE AISLE, EAST WALL, THE NEGRO'S CONTRIBUTION IN THE SOCIAL AND CULTURAL DEVELOPMENT OF AMERICA: EDUCATION MURAL - U.S. Department of the Interior, Eighteenth & C Streets Northwest, Washington, District of Columbia, DC

  14. Nature and Science at Grand Teton National Park

    NSDL National Science Digital Library

    This National Park Service (NPS) website highlights the natural resources of Grand Teton National Park. Resources discussed include animals (birds, mammals, amphibians, reptiles), plants (wildflowers), environmental factors (geologic activity) and natural features (glaciers and mountains). A selection of links to additional documents and websites with related information is provided.

  15. Grand Challenges in GIScience: UCGIS experiences 2006-2010

    E-print Network

    Wright, Dawn Jeannine

    Grand Challenges in GIScience: UCGIS experiences 2006-2010 Tim Nyerges University of Washington Enterprise Project (Mike Gould and Toni Fisher et al.) 2008 white paper 2009 proposal 2010 proposals #12... thank you!Officers Position Name Institution President Tim Nyerges UNIVERSITY OF WASHINGTON Past

  16. Plantologie: atmosphre, surface, habitabilit UE M1 Grandes Questions Environnementales

    E-print Network

    Spiga, Aymeric

    Planétologie: atmosphère, surface, habitabilité UE M1 Grandes Questions Environnementales Aymeric 28 47 Bureau : Campus Jussieu, Tour 45-55, 3e étage, 305A Mail : aymeric [point] spiga [at] upmc [point] fr Site internet : http://www.lmd.jussieu.fr/~aslmd Twitter : http://www.twitter.com/aymeric

  17. SNOW: THE REAL WATER SUPPLY FOR THE RIO GRANDE BASIN

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The Rio Grande basin in Colorado, New Mexico, Texas, and Mexico is an important drainage in southwestern North America, vital for water consumption by a rapidly growing population, irrigated agriculture, economic development, preservation of endangered species, and energy generation. The most impor...

  18. Dans le grand mouvement scientifique du XIXe sicle, le dveloppement

    E-print Network

    , dans les années récentes, deux grands prix de l'Académie des Sciences sont venus distinguer des scientifique inclut une phase technique de réalisation d'appareillages, permettant notamment d'agiter et d'aérer les larves doucement sans les endommager, mais aussi une phase scientifique d'observation (types de

  19. GRAND CANYON NATIONAL PARK: ASSESSMENT OF TRANSPORTATION ALTERNATIVES

    Microsoft Academic Search

    Melissa Laube; Robert Stout

    2000-01-01

    Continuing traffic growth on roadways in the Grand Canyon National Park is a significant problem, detracting from the park as a natural, scenic environment and generating unacceptable levels of noise, air pollution, and congestion. A 1995 General Management Plan for the park identified transportation as the most significant issue affecting preservation of the park's unique natural resources. In FY 1999,

  20. The Stephen and NancyGrand Water Research

    E-print Network

    Agricultural Management Practices for Reducing Water Pollution and Hypoxia in Large Water Bodies in the WorldThe Stephen and NancyGrand Water Research Institute The Dahlia Greidinger International Symposium: Global Climate Change, Environmental Risks and Water Scarcity Appendix 1- Symposium Program 404 Crop

  1. The verifying compiler: A grand challenge for computing research

    Microsoft Academic Search

    Tony Hoare

    2003-01-01

    This contribution proposes a set of criteria that distinguish a grand challenge in science or engineering from the many other kinds of short-term or long-term research problems that engage the interest of scientists and engineers. As an example drawn from Computer Science, it revives an old challenge: the construction and application of a verifying compiler that guarantees correctness of a

  2. Grand Canyon Investigations: 131 Years in the Field

    USGS Multimedia Gallery

    Staff at the USGS Central Region Library created two displays for an open-house in celebration of National Library Week, April, 2010. This display on USGS scientific investigtations of the Grand Canyon displays field records, historical photography,historical surveying equipment, and publications fr...

  3. Grand Canyon Investigations: 131 years in the field

    USGS Multimedia Gallery

    Staff at the USGS Central Region Library created two displays for an open-house in celebration of National Library Week, April, 2010. This display on USGS scientific investigtations of the Grand Canyon displays field records, historical photography,historical surveying equipment, and publications fr...

  4. Society and Health in the Lower Rio Grande Valley.

    ERIC Educational Resources Information Center

    Madsen, William

    Shedding light on problems of mental health and illness that have baffled public health workers attempting to improve the health and welfare of Mexican Americans living in the lower Rio Grande Valley, this document reports the folk customs, social organization, medical practices, and beliefs of the Mexican American of this area. Chapters describe…

  5. Winning the DARPA Grand Challenge with an AI Robot

    Microsoft Academic Search

    Michael Montemerlo; Sebastian Thrun; Hendrik Dahlkamp; David Stavens; Sven Strohband

    2006-01-01

    This paper describes the software architecture of Stanley, an autonomous land vehicle developed for high-speed desert driving without human intervention. The vehi- cle recently won the DARPA Grand Challenge, a major robotics competition. The article describes the software architecture of the robot, which relied pervasively on state-of-the-art AI technologies, such as machine learn- ing and probabilistic reasoning.

  6. Grand Canyon Trekkers: School-Based Lunchtime Walking Program

    ERIC Educational Resources Information Center

    Hawthorne, Alisa; Shaibi, Gabriel; Gance-Cleveland, Bonnie; McFall, Sarah

    2011-01-01

    The incidence of childhood overweight is especially troubling among low income Latino youth. Grand Canyon Trekkers (GCT) was implemented as a quasi-experimental study in 10 Title 1 elementary schools with a large Latino population to examine the effects of a 16-week structured walking program on components of health-related physical fitness: Body…

  7. The Middle Rio Grande: Its ecology and management

    E-print Network

    the climate, geology, hydrology, subsequent river and factors which contribute to the past and current of the longest rivers in North America (1900 miles). The Rio originates in the southern Rocky Mountains Service, Albuquerque, NM. changed Rio Grande ecosystems by altering flood cycles, channel geomorphology

  8. 44. INTERIOR, FIRST FLOOR, NORTHEAST CORNER OF GRAND STAIRCASE (STAIRS ...

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

    44. INTERIOR, FIRST FLOOR, NORTHEAST CORNER OF GRAND STAIRCASE (STAIRS G), SIDE AISLE, EAST WALL, THE NEGRO'S CONTRIBUTION IN THE SOCIAL AND CULTURAL DEVELOPMENT OF AMERICA: RELIGION MURAL (4' x 5' negative; 8' x 10' print) - U.S. Department of the Interior, Eighteenth & C Streets Northwest, Washington, District of Columbia, DC

  9. The Deaf of Grand Cayman, British West Indies.

    ERIC Educational Resources Information Center

    Washabaugh, William

    1981-01-01

    Argues for the existence of two types of communities other than the diglossic deaf communities--isolated and developing deaf communities. The history, sign language and finger spelling of the Grand Cayman deaf community are discussed. As the deaf community develops, it is thinning out and breaking up. (PJM)

  10. KASCADE-Grande: An overview and first results

    NASA Astrophysics Data System (ADS)

    Bertaina, M.; Apel, W. D.; Arteaga, J. C.; Badea, F.; Bekk, K.; Blümer, J.; Bozdog, H.; Brancus, I. M.; Brüggemann, M.; Buchholz, P.; Chiavassa, A.; Cossavella, F.; Daumiller, K.; de Souza, V.; di Pierro, F.; Doll, P.; Engel, R.; Engler, J.; Finger, M.; Fuhrmann, D.; Ghia, P. L.; Gils, H. J.; Glasstetter, R.; Grupen, C.; Haungs, A.; Heck, D.; Hörandel, J. R.; Huege, T.; Isar, P. G.; Kampert, K.-H.; Kickelbick, D.; Klages, H. O.; Kolotaev, Y.; Luczak, P.; Mathes, H. J.; Mayer, H. J.; Meurer, C.; Milke, J.; Mitrica, B.; Morales, A.; Morello, C.; Navarra, G.; Nehls, S.; Oehlschläger, J.; Ostapchenko, S.; Over, S.; Petcu, M.; Pierog, T.; Plewnia, S.; Rebel, H.; Roth, M.; Schieler, H.; Sima, O.; Stümpert, M.; Toma, G.; Trinchero, G. C.; Ulrich, H.; van Buren, J.; Walkowiak, W.; Weindl, A.; Wochele, J.; Zabierowski, J.

    2008-04-01

    The KASCADE-Grande experiment, located at Forschungszentrum Karlsruhe (Germany), is a multi-component extensive air-shower experiment to study cosmic rays and their interactions at primary energies 1014 1018 eV. After detailed investigations of the knee in the spectrum with KASCADE and EAS-TOP experiments, the main goal of KASCADE-Grande is to provide conclusive results on the knee region by detecting the expected iron knee in the spectrum at around 1017 eV, and measuring the composition in the possible transition region between galactic and extragalactic components. Due to its multi-component characteristics, basically the former KASCADE experiment enriched by two new arrays of scintillator detectors (Grande and Piccolo), with the aim of providing a large acceptance area (0.5 km2) and prompt trigger signal, KASCADE-Grande is a suitable array to provide refined measurements in the 1016 1018 eV region. In the following, we briefly report on the characteristics of the detector, its performance, and first results based on 2 years of data taking.

  11. Grand Manner Aesthetics in Landscape: From Canvas to Celluloid

    ERIC Educational Resources Information Center

    Auger, Emily E.

    2009-01-01

    The methods by which environmental issues are aestheticized in late-twentieth-century film is directly and historically related to those established for grand manner painters by Nicholas Poussin (1594-1665) and taught at the French academy from the seventeenth through the nineteenth centuries. That these fundamentals were part of the training of…

  12. MIGRATION OF THE WILLOW THE MIDDLE RIO FLYCATCHER GRANDE ALONG

    Microsoft Academic Search

    WANG YONG; DEBORAH M. FINCH

    we studied timing, abundance, subspecies composition, fat stores, stopover length, and habitat use of Willow Flycatchers (Empidonax traillii) during spring and fall stopover along the Middle Rio Grande, New Mexico. Spring migration started in mid-May and lasted about a month. Fall migration started in early-August and also lasted about a month. The most abundant subspecies was the Southwestern Willow Flycatcher

  13. DEPARTMENT OF UROLOGIC SCIENCES GRAND ROUNDS FOR 2014-2015

    E-print Network

    Michelson, David G.

    DEPARTMENT OF UROLOGIC SCIENCES GRAND ROUNDS FOR 2014-2015 UNIVERSITY OF BRITISH COLUMBIA 0700, The Technology, The Adjuncts. Dr. Ryan Flannigan, Urology Resident PGY-4 17 Cryptorchidism: Mystery of the Missing Nut Dr. Henry Tran, Urology Resident PGY-4 24 High Risk Non Muscle Invasive Bladder Cancer

  14. DEPARTMENT OF UROLOGIC SCIENCES GRAND ROUNDS FOR 2014-2015

    E-print Network

    Ollivier-Gooch, Carl

    DEPARTMENT OF UROLOGIC SCIENCES GRAND ROUNDS FOR 2014-2015 UNIVERSITY OF BRITISH COLUMBIA 0700, The Technology, The Adjuncts. Dr. Ryan Flannigan, Resident PGY- 4 17 Dr. Henry Tran, Urology Resident PGY-4 24 Visiting Professor, Dr. Colin Dinney, Professor and Chairman of Department of Urology at MD Anderson Cancer

  15. DEPARTMENT OF UROLOGIC SCIENCES GRAND ROUNDS FOR 2013-2014

    E-print Network

    Michelson, David G.

    DEPARTMENT OF UROLOGIC SCIENCES GRAND ROUNDS FOR 2013-2014 UNIVERSITY OF BRITISH COLUMBIA 0700 Cell Carcinoma Before, During and After Renal Transplantation Dr. Samir Bidnur, Urology Resident PGY-3 in the targeted therapy era Dr. Michael Metcalfe, Urology Resident PGY-4 16 Failure to Launch. Impairments

  16. DEPARTMENT OF UROLOGIC SCIENCES GRAND ROUNDS FOR 2013-2014

    E-print Network

    Michelson, David G.

    DEPARTMENT OF UROLOGIC SCIENCES GRAND ROUNDS FOR 2013-2014 UNIVERSITY OF BRITISH COLUMBIA 0700, During and After Renal Transplantation Dr. Samir Bidnur, Urology Resident PGY-3 October 2 therapy era Dr. Michael Metcalfe, Urology Resident PGY-4 16 Failure to Launch. Impairments of Primary

  17. Grand Prize and Citation Winners: Ten School with Soaring Expectations.

    ERIC Educational Resources Information Center

    Learning By Design, 2002

    2002-01-01

    Describes the design features of the grand prize winners of the 2002 "Learning by Design" contest--an addition to West Linn High School in West Linn, Oregon, and the renovation of Beaver Brook Academic Center/The Ethel Walker School in Simsbury, Connecticut. Also describes the designs of the eight citation winners. (EV)

  18. EVALUATION OF IRRIGATION METHODS FOR SALINITY CONTROL IN GRAND VALLEY

    EPA Science Inventory

    Irrigation return flows in the Upper Colorado River Basin carry large salt loads as a result of contact with the saline soils and the marine derived geologic substratum. The Grand Valley of western Colorado is a major contributor to the salinity problems of the basin and is, ther...

  19. Male Rio Grande Turkey Survival and Movements in the

    Microsoft Academic Search

    Texas Panhandle

    Wildlife managers depend on accurate information regarding wild turkey (Meleagris gallopavo) survival patterns to properly manage turkey populations. Survival patterns of male Rio Grande wild turkeys (M. g. intermedia) have not been studied intensively. Wildlife managers in the Texas Panhandle, USA, and southwestern Kansas, USA, suspected that turkey populations were declining. From January 2000 through August 2002, we studied survival

  20. Modeling streamflow from snowmelt in the upper Rio Grande

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Annual snowpack in the high elevation snowsheds of the Upper Rio Grande (URG) Basin is a vital source of surface water for irrigated agriculture in New Mexico. Maximum streamflow from the annual snowpack usually occurs in early May for the southernmost snowsheds (e.g., Ojo Caliente) and at the end o...

  1. Case Study of the Grand Rapids Public Schools.

    ERIC Educational Resources Information Center

    Center for Educational Studies, Grand Rapids, MI.

    The Center for Educational Studies is a cooperative research center jointly funded and governed by the Grand Rapids Public Schools and Western Michigan University. It developed out of the need for more sustained longitudinal research oriented toward practical teaching applications. Current research being carried out includes studies on sex…

  2. Kristina Sorensen Acoustics of a Rotating Grand Piano & the Flute

    E-print Network

    Hart, Gus

    Kristina Sorensen Acoustics of a Rotating Grand Piano & the Flute Kristina Sorensen 1 10 June 2011 will be utilizing an acoustical array of microphones to analyze the three-dimensional sound radiation. Computer Relationships of Sound Propagation in both the Frequency and Time Domains Improve Competence in Acoustical

  3. RECLAMATION RESEARCH IN THE ALPINE REGION NEAR GRANDE CACHE, ALBERTA

    Microsoft Academic Search

    T. M. Macyk; V. Albush; O. Terry

    In 1992 the Alberta Research Council initiated a reclamation study at the Smoky River Coal Limited No. 12 Mine South area located northwest of Grande Cache, Alberta. The objective of the research is to assess the potential for revegetation of land affected by surface coal mining in this alpine area. Two plot areas approximately 300 m apart were established on

  4. ASSESSING TRANSBOUNDARY INFLUENCES IN THE LOWER RIO GRANDE VALLEY

    EPA Science Inventory

    The Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was a U.S.-Mexico Border XXI Program project to assess transboundary air pollution in and near Brownsville, Texas. The study used a three-site air monitoring network very close to the border to capture the d...

  5. 43. INTERIOR, FIRST FLOOR, SOUTHWEST CORNER OF GRAND STAIRCASE (STAIRS ...

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

    43. INTERIOR, FIRST FLOOR, SOUTHWEST CORNER OF GRAND STAIRCASE (STAIRS G), SIDE AISLE, WEST WALL, THE NEGRO'S CONTRIBUTION IN THE SOCIAL AND CULTURAL DEVELOPMENT OF AMERICA: THE ARTS MURAL - U.S. Department of the Interior, Eighteenth & C Streets Northwest, Washington, District of Columbia, DC

  6. 42. INTERIOR, FIRST FLOOR, NORTHWEST CORNER OF GRAND STAIRCASE (STAIRS ...

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

    42. INTERIOR, FIRST FLOOR, NORTHWEST CORNER OF GRAND STAIRCASE (STAIRS G), SIDE AISLE, WEST WALL, THE NEGRO'S CONTRIBUTION IN THE SOCIAL AND CULTURAL DEVELOPMENT OF AMERICA: SCIENCE MURAL - U.S. Department of the Interior, Eighteenth & C Streets Northwest, Washington, District of Columbia, DC

  7. Alt-Energy Grand Prix Inspires an "I Can" Attitude

    ERIC Educational Resources Information Center

    Tessmer, Al; Trzeciak, Mark

    2010-01-01

    This article describes how a team comprised largely of high school students builds and races an E85-fueled car and takes first place at the Bowling Green (Ohio) State University (BGSU) Grand Prix. Free and open to the public, the event features student drivers and crews, racing go-karts powered by renewable, ethanol-based E85 fuel. The track is a…

  8. EMPLOYMENT SUMMARY FOR 2011 GRADUATES Grand Forks, ND 58202

    E-print Network

    Delene, David J.

    EMPLOYMENT SUMMARY FOR 2011 GRADUATES Grand Forks, ND 58202 Website : www.law.und.edu Phone : 701 Date Deferred 0 Total graduates 81 Unemployed - Not Seeking 0 Employment Status Unknown 2 Unemployed - Seeking 9 Employed - Undeterminable * 0 0 0 0 0 Employed - Bar Passage Required 40 0 1 0 41 Pursuing

  9. Climate Change: A Grand Software Challenge Steve Easterbrook

    E-print Network

    Easterbrook, Steve

    Climate Change: A Grand Software Challenge Steve Easterbrook Department of Computer Science is a critical enabling technology in nearly all as- pects of climate change, from the computational models used]: General 1. INTRODUCTION Climate change is likely to be the defining issue of the 21st century. The science

  10. Evaluation of bergy bit populations on the Grand Banks

    Microsoft Academic Search

    G Crocker; J English; R McKenna; R Gagnon

    2004-01-01

    Shuttle tankers and hydrocarbon production platforms operating on the Grand Banks of Newfoundland must be designed for some level of ice loading. In some cases, high ice loads can result from relatively small icebergs, bergy bits, or growlers. This is particularly true when wave-induced ice motions are significant (in high sea states) or when vessel speeds are high (e.g., a

  11. SEDIMENT FLUX THROUGH THE RIO GRANDE RIVER: A MONSOONAL EFFECT

    E-print Network

    Seamons, Kent E.

    monsoonal effects using relationships between sediment flux, river discharge, and precipitation. Heavy water greatly affect stream discharge and sediment flux than increased precipitation with constant stormSEDIMENT FLUX THROUGH THE RIO GRANDE RIVER: A MONSOONAL EFFECT Troy C.Hiatt A thesis submitted

  12. Workshop and conference on Grand Challenges applications and software technology

    SciTech Connect

    Not Available

    1993-12-31

    On May 4--7, 1993, nine federal agencies sponsored a four-day meeting on Grand Challenge applications and software technology. The objective was to bring High-Performance Computing and Communications (HPCC) Grand Challenge applications research groups supported under the federal HPCC program together with HPCC software technologists to: discuss multidisciplinary computational science research issues and approaches, identify major technology challenges facing users and providers, and refine software technology requirements for Grand Challenge applications research. The first day and a half focused on applications. Presentations were given by speakers from universities, national laboratories, and government agencies actively involved in Grand Challenge research. Five areas of research were covered: environmental and earth sciences; computational physics; computational biology, chemistry, and materials sciences; computational fluid and plasma dynamics; and applications of artificial intelligence. The next day and a half was spent in working groups in which the applications researchers were joined by software technologists. Nine breakout sessions took place: I/0, Data, and File Systems; Parallel Programming Paradigms; Performance Characterization and Evaluation of Massively Parallel Processing Applications; Program Development Tools; Building Multidisciplinary Applications; Algorithm and Libraries I; Algorithms and Libraries II; Graphics and Visualization; and National HPCC Infrastructure.

  13. Citrus Variety Trends in the Lower Rio Grande Valley.

    E-print Network

    Alderman, D. C. (DeForest Charles)

    1951-01-01

    Citrus Variety Trends in the Lower Rio Grande Valley CONTENTS ......................................................................................................... Digest ...... 3... thousands of citrus trees and the growers were faced with a tremendous replanting program, which, in turn, had focused interest on varieties. Fruit production figures, yields per acre, and monetary returns per acre for five varieties of grapefruit...

  14. 44. CROSS SECTION OF GRAND CANAL (not to scale, but ...

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

    44. CROSS SECTION OF GRAND CANAL (not to scale, but representative of all six canals) Plan Sheet D-29976, Venice Canals Rehabilitation, Sheet No. 7 of 26 (delineated by T. Wu and E. Lee, March 1991) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  15. 60. PAGE TWO OF PLANS FOR GRAND CANAL AT WASHINGTON ...

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

    60. PAGE TWO OF PLANS FOR GRAND CANAL AT WASHINGTON STREET TIDEGATE SYSTEM REHABILITATION Plan Sheet D-28451, Sheet No. 2 of 3 (delineated by H. V. Nguyen, November 1985) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  16. 61. PAGE THREE OF PLANS FOR GRAND CANAL AT WASHINGTON ...

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

    61. PAGE THREE OF PLANS FOR GRAND CANAL AT WASHINGTON STREET TIDEGATE SYSTEM REHABILITATION Plan Sheet D-28451, Sheet No. 3 of 3 (delineated by H. V. Nguyen, November 1985) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

  17. Grand Rounds Understanding the Potential Role of Adult

    E-print Network

    George, Steven C.

    Grand Rounds Understanding the Potential Role of Adult Stem Cells in the Skin Adult stem cell and regenerative cells obtained from human adipose tissue. He has 30 years of experience working with adult stem cells in both academia and industry. Prior to joining Cytori, Dr Fraser had a 12 year career

  18. Collaborative Care for Children: A Grand Rounds Presentation

    ERIC Educational Resources Information Center

    Foley, Michele; Dunbar, Nancy; Clancy, Jeanne

    2014-01-01

    At the end of the 2011-2012 school year, two collaborative initiatives took place in Springfield, MA, between the public school system and Baystate Medical Center, an affiliate of Tufts University. The success of these initiatives was highlighted during grand rounds that featured academic medical center physicians and nurses as well as public…

  19. Challenges and Opportunities for Water of the Rio Grande

    Microsoft Academic Search

    M. Edward Rister; Allen W. Sturdivant; Ronald D. Lacewell; Ari M. Michelsen

    2011-01-01

    The Rio Grande has headwaters in Colorado, flows through New Mexico, and serves as the United States.–Mexico border in Texas, emptying into the Gulf of Mexico. Snow melt in Colorado and northern New Mexico constitutes the water river supply for New Mexico and the El Paso region, whereas summer monsoonal flow from the Rio Conchos in Mexico and tributaries, including

  20. When did the Grand Canyon Begin to Form?

    NSDL National Science Digital Library

    Mary LeFever

    2008-03-14

    This post, originally published in the Connecting News with National Science Education Standards blog, deals with the findings suggesting the Grand Canyon is two to three times older than commonly believed. Ideas for engaging students in a thoughtful discussion about these research findings are provided.

  1. Late Quaternary Zonation of Vegetation in the Eastern Grand Canyon

    Microsoft Academic Search

    Kenneth Cole

    1982-01-01

    Fossil assemblages from 53 packrat middens indicate which plant species were dominant during the last 24,000 years in the eastern Grand Canyon. Past vegetational patterns show associations that cannot be attributed to simple elevational displacement of the modern zones. A model emphasizing a latitudinal shift of climatic values is proposed.

  2. Carbonaceous aerosol particles from common vegetation in the Grand Canyon

    SciTech Connect

    Hallock, K.A.; Mazurek, M.A. (Brookhaven National Lab., Upton, NY (United States)); Cass, G.R. (California Inst. of Tech., Pasadena, CA (United States). Dept. of Environmental Engineering Science)

    1992-05-01

    The problem of visibility reduction in the Grand Canyon due to fine organic aerosol particles in the atmosphere has become an area of increased environmental concern. Aerosol particles can be derived from many emission sources. In this report, we focus on identifying organic aerosols derived from common vegetation in the Grand Canyon. These aerosols are expected to be significant contributors to the total atmospheric organic aerosol content. Aerosol samples from living vegetation were collected by resuspension of surface wax and resin components liberated from the leaves of vegetation common to areas of the Grand Canyon. The samples were analyzed using high-resolution gas chromatography/mass spectrometry (GC/MS). Probable identification of compounds was made by comparison of sample spectra with National Institute of Standards and Technology (NIST) mass spectral references and positive identification of compounds was made when possible by comparison with authentic standards as well as NIST references. Using these references, we have been able to positively identify the presence of n-alkane and n-alkanoic acid homolog series in the surface waxes of the vegetation sampled. Several monoterpenes, sesquiterpenes, and diterpenes were identified also as possible biogenic aerosols which may contribute to the total organic aerosol abundance leading to visibility reduction in the Grand Canyon.

  3. Brighty, donkeys and conservation in the Grand Canyon.

    PubMed

    Wills, John

    2006-09-01

    The Grand Canyon is a vast place. It is almost incomprehensible in size. And yet it can also seem strangely crowded. Millions of tourists flock to the Grand Canyon in northern Arizona every year. In 1999, almost 5 million people visited, the highest figure in Canyon history. And each one of them expected to see a wild, free and untrammelled landscape. Despite the obvious natural resources, this expectation has proved anything but easy to satisfy. The US National Park Service (NPS), responsible for the management of most large North American parks (along with several historic sites and museums), has struggled to make or keep the canyon "grand". Park rangers have grappled with a multitude of issues during the past century, including automobile congestion, drying of the Colorado River and uranium mining inside the park. Conservation has posed a unique set of challenges. On a fundamental level, "restoring" the Grand Canyon to its "original" wilderness setting has proved intensely problematic. In the field of wildlife management, restoring the Canyon to its pre-Columbian splendour has entailed some tough decisions--none more so than a 1976 plan to eliminate a sizeable population of feral burros (wild donkeys) roaming the preserve, animals classified as exotics by the NPS. PMID:16904748

  4. National Uranium Resource Evaluation, Grand Canyon Quadrangle, Arizona

    SciTech Connect

    Baillieul, T.A.; Zollinger, R.C.

    1982-06-01

    The Grand Canyon Quadrangle (2/sup 0/), northwestern Arizona, was evaluated to identify environments and delineate areas favorable for the occurrence of uranium deposits. This was done using criteria developed for the National Uranium Resource Evaluation. General surface reconnaissance and geochemical sampling were carried out in all geologic environments within the quadrangle. Aerial radiometric and hydrochemical and stream-sediment reconnaissance surveys were performed, although results were not available in time for field checking. The results of this investigation indicate environments favorable for: channel-controlled, peneconcordant sandstone deposits in the Petrified Forest Member of the Chinle Formation in the north-central part of the quadrangle, vein-type deposits in collapse breccias in all areas underlain by the Redwall Limestone, and unconformity-related deposits in the metasediments of the Vishnu Group within the Grand Canyon. All other rock units examined are considered unfavorable for hosting uranium deposits. Younger Precambrian rocks of the Grand Canyon Supergroup, exposed only within the Grand Canyon National Park, remain unevaluated.

  5. The Grand Canyon: The Top Two Rock Layers

    NSDL National Science Digital Library

    2006-01-01

    Watch this short video clip to learn more about the rock layers of the Grand Canyon. This video discusses the two sandstone formations that comprise the uppermost part of the canyon. The video also discusses how the two sandstone layers were formed.

  6. Natural variability in forests of the Grand Canyon, USA

    Microsoft Academic Search

    Peter Z. Fule; W. Wallace Covington; Margaret M. Moore; Thomas A. Heinlein; Amy E. M. Waltz

    2002-01-01

    Abstract Aim Compare contemporary with pre-fire-disruption forest structures, assessing the influence,of factors,that,caused,ecological,change,and,evaluating,remote,sites as relatively natural areas. Location,Grand,Canyon,National,Park contains,the largest never-harvested,and,long-

  7. Crisscrossing "Grand Canyon": Bridging the Gaps with Computer Conferencing.

    ERIC Educational Resources Information Center

    Minock, Mary; Shor, Francis

    1995-01-01

    Notes that Interdisciplinary Studies Program faculty at Wayne State University devised courses and assignments using computer conferencing to create a collaborative, democratic, and nonauthoritarian learning community. Discusses an assignment based on the film "Grand Canyon" that encouraged students to take on roles of their racial and gender…

  8. Wintertime Boundary Layer Structure in the Grand Canyon

    Microsoft Academic Search

    C. David Whiteman; Shiyuan Zhong; Xindi Bian

    1999-01-01

    Wintertime temperature profiles in the Grand Canyon exhibit a neutral to isothermal stratification during both daytime and nighttime, with only rare instances of actual temperature inversions. The canyon warms during daytime and cools during nighttime more or less uniformly through the canyon's entire depth. This weak stability and temperature structure evolution differ from other Rocky Mountain valleys, which develop strong

  9. Cenozoic Landscape Evolution of the Grand Canyon Region, Arizona

    E-print Network

    Lee, John

    2008-02-26

    patterns by recording the thermal history of rocks in the subsurface. This study utilizes apatite (U-Th)/He and fission track analysis of a several newly collected datasets to constrain the unroofing of the Grand Canyon region. Assessment of topographic...

  10. The Grand Canyon of the Yellowstone Online Tour

    NSDL National Science Digital Library

    Yellowstone National Park

    This Yellowstone National Park website offers an online tour of the Grand Canyon of the Yellowstone. Prominent viewpoints of the canyon are highlighted with photos and information concerning their history. Other stops include information on giant glacial boulders and waterfalls. Similar tours of the Old Faithful area, the Norris Geyser Basin, the Fountain Paint Pots, and the Mammoth Hot Springs are also available online.

  11. EXPLORING SOLAR GRAND MINIMA THROUGH A TIME DELAY DYNAMO MODEL

    NASA Astrophysics Data System (ADS)

    Hazra, Soumitra; Nandy, D.

    2013-07-01

    Fluctuations in solar magnetic output, including episodes of grand minima such as the Maunder minimum are studied using a mathematical model based on time delay differential equations. Time delays physically capture the effect of the finite time required for magnetic flux transport between two spatially segregated source regions for toroidal and poloidal field creation. We show that cycle to cycle variations and Maunder-like grand minima are naturally produced by introduction of stochastic fluctuation in the poloidal field generation mechanism. Our analysis shows that the Babcock-Leighton mechanism, alone, cannot restart the sunspot cycle once it settles into a grand minimum. An additional poloidal field source capable of working on weak toroidal magnetic fields - such as that driven by helical turbulence (mean-field alpha-effect) - is necessary to recover the solar cycle. Our result demonstrates the importance of a small-scale alpha-effect in the context of the large-scale solar cycle dynamics and shows, how self consistent entry and exit from grand minima like episodes are possible.

  12. NASA's Asteroid Initiative Asteroid Redirect Mission and Grand Challenge

    E-print Network

    NASA's Asteroid Initiative Asteroid Redirect Mission and Grand Challenge Robert Lightfoot, NASA's Asteroid Initiative · NASA is leveraging relevant portions of science, space technology, and human exploration capabilities toward a first-ever mission to capture and redirect a near Earth asteroid to earth

  13. Grand Canyon Glass Skywalk creates excitement and controversy

    NSDL National Science Digital Library

    Grinnell, Max

    Skywalk at Grand Canyon making its debuthttp://www.azcentral.com/news/articles/0320grandcanyonskywalk20-ON.htmlGrand Canyon National Park [pdf]http://www.nps.gov/grca/Hualapai Tribehttp://www.itcaonline.com/tribes_hualapai.htmlASU Libraries: Native Americans Onlinehttp://www.asu.edu/lib/archives/links.htmGrand Canyon Skywalk [Macromedia Flash Player]http://www.grandcanyonskywalk.com/Over the millennia, the Grand Canyon has been the source of wonder and amazement as it was traversed first by indigenous people and a host of other individuals, including John Wesley Powell, who surveyed the area in 1869. This Tuesday saw the formal opening of a recent man-made addition to the rim of the Canyon that generated plenty of commentary and controversy months before it opened. The Grand Canyon Skywalk, which resembles a massive horseshoe, extends 70 feet beyond the canyon's edge. The Las Vegas developer, David Jin, created this project. Visitors to the Skywalk who pay $25 will get to look down through glass panels to the canyon floor some 4000 feet below, which could be both exhilarating and frightening, depending one one's temperament and tolerance for heights. The Hualapai Indians, who have aggressively defended the Skywalk as a form of effective economic development, approved the Skywalk and Sheri Yellowhawk who has been overseeing the project commented, "When we have so much poverty and so much unemployment, we have to do something." Other individuals and organizations have voiced strong concerns about the Skywalk, and Kieran Suckling, policy director for the Center for Biological Diversity is one of their number. In a recent interview, he commented "The tribe has repeatedly brought tacky, gross commercial ventures into the canyon, and it's inappropriate."The first link will take users to a well-written piece from Devika Bhat of the Times which comments on the opening of the Skywalk. The second link takes users to another piece on the Skywalk, offered courtesy of the Arizona Republic. Moving along, the third link leads to the very authoritative and informative National Park Service site dedicated to the natural history and geography of the Grand Canyon. The fourth link whisks users away to the Inter Tribal Council of Arizona's site on the Hualapai Tribe. The fifth link will take users to the Arizona State University Libraries' Native Americans Online site. Here, visitors can look over an extensive set of links that lead to a variety of online resources, such as digital collections and such. The final link leads to the official homepage of the Grand Canyon Skywalk, which is available in Korean, Japanese, Chinese, and English.

  14. 77 FR 14269 - Amendment of Class C Airspace; Springfield, MO; Lincoln, NE; Grand Rapids, MI

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-09

    ...Gerald R. Ford International Airport, Grand...6, 2012, to include the city name...airport name and geographic coordinates of Gerald R. Ford International Airport, Grand...Gerald R. Ford International Airport,...

  15. 75 FR 11938 - Meridian Automotive Systems, Grand Rapids, MI; Notice of Termination of Investigation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-12

    ...Administration [TA-W-70,227] Meridian Automotive Systems, Grand Rapids, MI; Notice...official on behalf of workers of Meridian Automotive Systems, Grand Rapids, Michigan (Meridian Automotive). The petitioning group of...

  16. 40 CFR 81.173 - Grand Mesa Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 false Grand Mesa Intrastate Air Quality Control Region. 81.173 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.173 Grand...

  17. 40 CFR 81.173 - Grand Mesa Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 false Grand Mesa Intrastate Air Quality Control Region. 81.173 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.173 Grand...

  18. Estimating commuter rail demand to Kendall Square along the Grand Junction Corridor

    E-print Network

    Bockelie, Adam

    2012-01-01

    Since acquiring the Grand Junction Railroad in June 2010 from CSX, the Massachusetts Bay Transit Authority (MBTA) has explored the possibility of using the line for commuter rail service. In addition the Grand Junction ...

  19. 75 FR 10308 - Fire Management Plan, Final Environmental Impact Statement, Record of Decision, Grand Canyon...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-05

    ...DEPARTMENT OF THE INTERIOR National Park Service Fire Management Plan, Final Environmental Impact...Environmental Impact Statement for the Fire Management Plan, Grand Canyon National...availability of the Record of Decision for the Fire Management Plan, Grand Canyon...

  20. 75 FR 54085 - Divide Ranger District, Rio Grande National Forest; Colorado; Big Moose Vegetation Management...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-03

    ...Forest Service Divide Ranger District, Rio Grande National Forest; Colorado; Big...Management Project AGENCY: Forest Service, Rio Grande National Forest, USDA. ACTION...1909.15, Section 21. Dated: August 25, 2010. Thomas Malecek, District...

  1. 78 FR 45495 - Conejos Peak Ranger District, Rio Grande National Forest; Colorado; Cumbres Vegetation Management...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-29

    ...Forest Service Conejos Peak Ranger District, Rio Grande National Forest; Colorado; Cumbres...SUMMARY: The Conejos Peak Ranger District, Rio Grande National Forest, proposes to salvage...e-mail to...

  2. 12. CCC RUBBLE PAVING IN GRAND CANAL AT 4E10N NEAR ...

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

    12. CCC RUBBLE PAVING IN GRAND CANAL AT 4E-10N NEAR 83RD AVENUE AND BETHANY HOME ROAD, GLENDALE. Photographer unknown, January 18, 1938 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

  3. 78 FR 29202 - Environmental Impact Statement: Grand Forks County, North Dakota and Polk County, Minnesota

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-17

    ...Statement: Grand Forks County, North Dakota and Polk County, Minnesota AGENCY...project in Grand Forks County, North Dakota and Polk County, Minnesota. FOR...Federal Highway Administration, North Dakota Division Office, 1471...

  4. 76 FR 42654 - Endangered and Threatened Wildlife and Plants; Petition To List Grand Canyon Cave Pseudoscorpion

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-19

    ...ceilings, and floors for animals and invertebrates. He identified 12 invertebrates from the 8 caves. The Grand Canyon cave...unpublished literature on cave-dwelling invertebrates within Grand Canyon National Park, as...

  5. Estimating Distribution and Abundance of Rio Grande Wild Turkeys in South Texas

    E-print Network

    Caveny, Robert J.

    2010-10-12

    Grande wild turkey (Meleagris gallapavo intermedia) distribution and abundance. I flew replicated aerial surveys during 2007 and 2008 to evaluate distribution of Rio Grande wild turkeys in the south Texas Coastal Sand Plains. I used a double observer...

  6. 75 FR 9955 - Entergy Operations, Inc.; Grand Gulf Nuclear Station, Unit 1; Environmental Assessment and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-04

    ...Operations, Inc.; Grand Gulf Nuclear Station, Unit 1; Environmental...Significant Impact The U.S. Nuclear Regulatory Commission (NRC...operation of the Grand Gulf Nuclear Station, Unit 1 (GGNS...No changes to the National Pollution Discharge Elimination...

  7. 14 CFR Appendix to Subpart U of... - Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Appendix to Subpart U of...in the Vicinity of Grand Canyon National Park, AZ Pt. 93, Subpt. U, App...the Vicinity of the Grand Canyon National Park, AZ...

  8. 14 CFR Special Federal Aviation... - 2-Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Federal Special Federal...the Vicinity of the Grand Canyon National Park, AZ Section 1. Applicability...designated as the Grand Canyon National Park Special Flight Rules Area: That...

  9. 14 CFR Appendix to Subpart U of... - Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Appendix to Subpart U of...in the Vicinity of Grand Canyon National Park, AZ Pt. 93, Subpt. U, App...the Vicinity of the Grand Canyon National Park, AZ...

  10. 14 CFR Special Federal Aviation... - 2-Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Federal Special Federal...the Vicinity of the Grand Canyon National Park, AZ Section 1. Applicability...designated as the Grand Canyon National Park Special Flight Rules Area: That...

  11. 14 CFR Appendix to Subpart U of... - Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Appendix to Subpart U of...in the Vicinity of Grand Canyon National Park, AZ Pt. 93, Subpt. U, App...the Vicinity of the Grand Canyon National Park, AZ...

  12. 14 CFR Appendix to Subpart U of... - Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Appendix to Subpart U of...in the Vicinity of Grand Canyon National Park, AZ Pt. 93, Subpt. U, App...the Vicinity of the Grand Canyon National Park, AZ...

  13. 14 CFR Special Federal Aviation... - 2-Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Federal Special Federal...the Vicinity of the Grand Canyon National Park, AZ Section 1. Applicability...designated as the Grand Canyon National Park Special Flight Rules Area: That...

  14. 14 CFR Special Federal Aviation... - 2-Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Federal Special Federal...the Vicinity of the Grand Canyon National Park, AZ Section 1. Applicability...designated as the Grand Canyon National Park Special Flight Rules Area: That...

  15. 76 FR 40293 - Proposed Amendment of Class D and Modification of Class E Airspace; Grand Junction, CO

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-08

    ...Modification of Class E Airspace; Grand Junction, CO AGENCY: Federal Aviation Administration...Junction Regional Airport, Grand Junction, CO. Additional controlled airspace is necessary...Junction Regional Airport, Grand Junction, CO. Additional controlled airspace...

  16. 14 CFR Special Federal Aviation... - 2-Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Federal Special Federal...the Vicinity of the Grand Canyon National Park, AZ Section 1. Applicability...designated as the Grand Canyon National Park Special Flight Rules Area: That...

  17. 14 CFR Appendix to Subpart U of... - Special Flight Rules in the Vicinity of the Grand Canyon National Park, AZ

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...the Vicinity of the Grand Canyon National Park, AZ Appendix to Subpart U of...in the Vicinity of Grand Canyon National Park, AZ Pt. 93, Subpt. U, App...the Vicinity of the Grand Canyon National Park, AZ...

  18. 75 FR 34001 - Safety Zone; Grand Marais Splash-In, West Bay, Lake Superior, Grand Marais, MI

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-16

    ...during the Grand Marais Splash-In Sea Plane Competition. DATES: This rule is effective...potential hazards associated with the sea plane competition. Under 5 U.S.C. 553...spectators from hazards associated with sea planes taking- off, flying and landing in...

  19. Rare, Threatened and Endangered Species of the Rio Grande/ Rio Bravo Basin: A Bibliography

    E-print Network

    Wilkins, Neal; Gil, Karine

    Rare, Threatened and Endangered Species of the Rio Grande/ Rio Bravo Basin: A Bibliography By Karine Gil and Neal Wilkins April 2003 Rio Grande Basin Mexico TWRI Technical Report 214 Contents... can also add references to the Rio Grande Basin Endangered and Threatened Species bibliography. Rio Grande Word: Chapters I-IV are also provided in Microsoft Word with links to Internet sites. *EndNote®: This program for Microsoft Word or Corel...

  20. Research and management of soil, plant, animal, and human resources in the Middle Rio Grande Basin

    E-print Network

    Research and management of soil, plant, animal, and human resources in the Middle Rio Grande Basin of the Rio Grande Basin". This program is funded by an Ecosystem Management grant from Forest Service systems and human popula- tions in the Middle Rio Grande Basin. Research studies emphasize upland ecology

  1. Human impacts on riparian ecosystems of the Middle Rio Grande Valley during historic times

    E-print Network

    Human impacts on riparian ecosystems of the Middle Rio Grande Valley during historic times Frank E riparian ecosystems in the Middle Rio Grande Valley of New Mexico. A vital relationship has existed between have influenced human generated changes in the riparian ecosys- tems of the Middle Rio Grande Valley

  2. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section...105 Marquesas Keys, FL to Rio Grande, TX. A line drawn...33 CFR 2.22(a)(1)) to Rio Grande, Texas at approximate position latitude 25°58.6? N, longitude...

  3. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section...105 Marquesas Keys, FL to Rio Grande, TX. A line drawn...33 CFR 2.22(a)(1)) to Rio Grande, Texas at approximate position latitude 25°58.6? N, longitude...

  4. 78 FR 25097 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-29

    ...SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this...

  5. 77 FR 41798 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-16

    ...SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this...

  6. 77 FR 21584 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-10

    ...SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics...

  7. 76 FR 39120 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-05

    ...established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics include...Overview of the Rio Grande Natural Area Act and Commission...

  8. 78 FR 69127 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-18

    ...SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this...

  9. 76 FR 73657 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-29

    ...SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics...

  10. 76 FR 55416 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-07

    ...established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics include: Site visit to Rio Grande Natural Area, a review of existing...

  11. 77 FR 8275 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-14

    ...SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics...

  12. 77 FR 66479 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-05

    ...SUPPLEMENTARY INFORMATION: The Rio Grande Natural Area Commission was established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this...

  13. Effects of tributary debris on the longitudinal profile of the Colorado River in Grand Canyon

    E-print Network

    Effects of tributary debris on the longitudinal profile of the Colorado River in Grand Canyon January 2006; published 17 June 2006. [1] The Colorado River in Grand Canyon has long been known debris flow activity in Grand Canyon. At all wavelengths the most likely cause for these river profile

  14. Magnitude and Frequency Data for Historic Debris Flows in Grand Canyon

    E-print Network

    Magnitude and Frequency Data for Historic Debris Flows in Grand Canyon National Park and Vicinity with the BUREAU OF RECLAMATION #12;Magnitude and Frequency Data for Historic Debris Flows in Grand Canyon National.............................................................................................................................. 6 Debris flows in Grand Canyon National Park

  15. Debris flow deposition and reworking by the Colorado River in Grand Canyon, Arizona

    E-print Network

    Debris flow deposition and reworking by the Colorado River in Grand Canyon, Arizona Brian J reworking to limit the rate of debris fan aggradation in Grand Canyon. Citation: Yanites, B. J., R. H. Webb in Grand Canyon, Arizona, Water Resour. Res., 42, W11411, doi:10.1029/2005WR004847. 1. Introduction [2

  16. Quaternary Science Reviews 24 (2005) 24282448 Pleistocene geomorphology and geochronology of eastern Grand

    E-print Network

    Pederson, Joel L.

    of eastern Grand Canyon: linkages of landscape components during climate changes Matt D. Andersa , Joel L deposits in the arid setting of eastern Grand Canyon. The result is a stratigraphic framework of inset fill catchments within Grand Canyon may be largely a function of the weathering-limited nature of hillslope

  17. Age and Evolution of the Grand Canyon Revealed by UPb Dating of Water Table Type Speleothems

    Microsoft Academic Search

    Victor Polyak; Carol Hill; Yemane Asmerom

    2008-01-01

    The age and evolution of the Grand Canyon have been subjects of great interest and debate since its discovery. We found that cave mammillaries (water table indicator speleothems) from nine sites in the Grand Canyon showed uranium-lead dating evidence for an old western Grand Canyon on the assumption that groundwater table decline rates are equivalent to incision rates. Samples in

  18. Water Environment Evolution along the China Grand Canal

    NASA Astrophysics Data System (ADS)

    Mao, F.; Wu, Y. X.; Yang, B. F.; Li, X. J.

    2014-03-01

    The China Grand Canal is one of the earliest canals in the world, having lasted for nearly 3000 years. Even its section canals have a rich history, such as the North-South Grand Canal that was established during the Sui Dynasty, whereas the Beijing-Hangzhou Canal was excavated during the Yuan Dynasty and the east line of the South-to-North Water Diversion. As one of the longest in the world, the China Grand Canal's total length is over 3500 kilometers. This length includes the navigable, unnavigable, and underground sections. Making the best use of situations and according to local conditions, the Chinese people harmoniously constructed the Beijing-Hangzhou Canal with nature. Tens of millions of workers took nearly 3000 years to complete the great shipping system. Navigable sections still exist for up to 900 kilometers and the volume of freight traffic is approximately 300 million tons. The canal remains the main logistical channel of the North-to-South Coal Transportation, South-to-North Water Diversion, and resources circulation. To date, China is promoting the success of heritage application. Part of these efforts is the declaration of the China Grand Canal as a World Cultural Heritage by 2014. In addition, the east route of the South-to-North Water Transfer project is planned to be navigable by 2016. The ancient Beijing-Hangzhou Grand Canal will usher in the new ecological civilization and cultural revival along the canal. This paper presents technical methods of water environment evolution research on the river system, river, and water quality along the Beijing-Hangzhou Canal through the integration of historical literature and modern remote sensing image data. The study carried out water environment investigation and analysis along the Beijing-Hangzhou canal by using ETM, SPOT image data, and GPS measurement data. Spatial and temporal evolution characteristics and regulations of the Beijing-Hangzhou Grand Canal regional water environment in the span of 3000 years were obtained. As a key national cultural relic, candidate of the world cultural heritage, and route of the South-to-North Water Diversion, the China Great Canal is a worthy subject of a study. Results presented in this paper therefore have high realistic significance.

  19. Hyperchloremic acidosis during grand mal seizure lactic acidosis

    Microsoft Academic Search

    F. Brivet; M. Bernardin; P. Cherin; J. Chalas; P. Galanaud; J. Dormont

    1994-01-01

    Objective  To evaluate the prevalence and the mechanism of hyperchloremic acidosis component (HC1A) during lactic acidosis secondary\\u000a to grand mal seizures.\\u000a \\u000a \\u000a \\u000a Design  Retrospective study.\\u000a \\u000a \\u000a \\u000a Setting  Medical intensive care unit in a university hospital.\\u000a \\u000a \\u000a \\u000a Patients  35 patients admitted for grand mal seizures with lactic acidosis (pH2 2 <8 kPa).\\u000a \\u000a \\u000a \\u000a Measurements  HC1A was defined by the ratio: excess anion gap\\/HCO3 deficit (?AG\\/?TCO2) <0.8. A difference in the

  20. Light threshold effects in supersymmetric grand unified theories

    SciTech Connect

    Faraggi, A.E. [Weizmann Institute of Science, Rehovot (Israel). Dept. of Physics; Grinstein, B. [Superconducting Super Collider Lab., Dallas, TX (United States)

    1993-08-01

    Supersymmetric Grand Unified Theories have a rich spectrum of particles barely heavier than the intermediate vector bosons. As their non-supersymmetric counterparts, they lead to many relations among low energy observables. But the precise form of the predictions is modified by the extended spectrum. If the masses of these new particles are comparable to M{sub Z}, the standard computation of their effect becomes inaccurate. The authors, present a detailed discussion of the correct procedure, and carry out the relevant computations to one loop order. Attention is paid to the special treatment that the top and Higgs particles must receive. The size of the effect is explored for a range of parameters in the minimal supersymmetric SU(5) grand-unified theory with radiative breaking. It is found that the naive (leading-log) computation can be fairly inaccurate.

  1. Constraining grand unification using first and second generation sfermions

    NASA Astrophysics Data System (ADS)

    Miller, D. J.; Morais, A. P.; Pandita, P. N.

    2013-01-01

    We investigate the spectrum of supersymmetric grand unification models based on the gauge groups SU(5), SO(10) and E6, paying particular attention to the first and second generation. We demonstrate how the measurement of the first or second generation sfermion spectrum may be used to constrain the underlying grand unification structure. The smallness of first and second generation Yukawa interactions allows us to perform an analytic analysis, deriving expressions for the high scale parameters in terms of the low scale sfermion masses. We also describe a sum rule that provides an SO(10) mass prediction, distinct from SU(5), and discuss E6 models, both with and without extra exotic matter at low energies. The derived relations are compared with numerical results including two-loop running and the full Yukawa dependence.

  2. Volume terms for charged colloids: a grand-canonical treatment

    E-print Network

    Bas Zoetekouw; Rene van Roij

    2006-02-28

    We present a study of thermodynamic properties of suspensions of charged colloids on the basis of linear Poisson-Boltzmann theory. We calculate the effective Hamiltonian of the colloids by integrating out the ionic degrees of freedom grand-canonically. This procedure not only yields the well-known pairwise screened-Coulomb interaction between the colloids, but also additional volume terms which affect the phase behavior and the thermodynamic properties such as the osmotic pressure. These calculations are greatly facilitated by the grand-canonical character of our treatment of the ions, and allow for relatively fast computations compared to earlier studies in the canonical ensemble. Moreover, the present derivation of the volume terms are relatively simple, make a direct connection with Donnan equilibrium, yield an explicit expression for the effective screening constant, and allow for extensions to include, for instance, nonlinear effects.

  3. Investigating the 2nd knee: The KASCADE-Grande experiment

    E-print Network

    KASCADE-Grande Collaboration - A. Haungs; W. D. Apel; A. F. Badea

    2005-08-12

    Recent results from the multi-detector set-up KASCADE on measurements of cosmic rays in the energy range of the so called "first" knee (at approx. 3 PeV) indicate a distinct knee in the energy spectra of light primary cosmic rays and an increasing dominance of heavy ones towards higher energies. This leads to the expectation of knee-like features of the heavy primaries at around 100 PeV. To investigate this energy region KASCADE has recently been extended by a factor 10 in area to the new experiment KASCADE-Grande. Main results of KASCADE as well as set-up, capabilities, and status of KASCADE-Grande are presented.

  4. Late archaic settlement systems in the northern Rio Grande

    SciTech Connect

    Vierra, Bradley J.

    2003-01-01

    Last year at these meetings I proposed a possible seasonal transhumance pattern for the Late Archaic in the northern Rio Grande region. This pattern involved the movement of groups from the lowland juniper-savanna grasslands in the early summer, to the upland ponderosa pindmixed conifer forests in the mid to late summer, and then back down to the piiion-juniper woodlands during the fall. The Rio Grande Valley was also used for winter habitation sites. Following on this research, I take the next step by studying the inter-assemblage variability represented in a sample of open-air sites located within each of these vegetation communities. The results indicate that there are significant differences in reduction tactics represented between valley habitation vs., upland campsites, and that these site sites are linked together by obsidian procurement patterns.

  5. Grand challenges in mass storage: A system integrator's perspective

    NASA Technical Reports Server (NTRS)

    Mintz, Dan; Lee, Richard

    1993-01-01

    The grand challenges are the following: to develop more innovation in approach; to expand the I/O barrier; to achieve increased volumetric efficiency and incremental cost improvements; to reinforce the 'weakest link' software; to implement improved architectures; and to minimize the impact of self-destructing technologies. Mass storage is defined as any type of storage system exceeding 100 GBytes in total size, under the control of a centralized file management scheme. The topics covered are presented in viewgraph form.

  6. Differential compaction mechanism for earth fissures near Casa Grande, Arizona.

    USGS Publications Warehouse

    Jachens, R.C.; Holzer, T.L.

    1982-01-01

    Precise gravity measurements indicate that earth fissures or tension cracks caused by ground-water withdrawal within a 10km2 area SE of Casa Grande are associated with relief on the buried interface between the alluvial aquifer and underlying bedrock. These relations suggest that the fissures are forming in response to localized differential compaction caused by localized variations of aquifer-system thickness. -from Authors

  7. Pollution Sources Over the Grand Canyon and Canyonlands National Parks

    Microsoft Academic Search

    S. Huang; C. J. Popp; R. Arimoto; R. S. Martin

    2003-01-01

    To investigate pollution sources that are degrading the visibility of two national parks, Grand Canyon National Park, AZ, and Canyonlands National Park, UT, daily samples of total suspended particulates (TSP), PM2.5, trace gases, and organic compounds were collected in the two parks in the summer (July) of 2001 and winter (December-January) of 2001-2002. Factor analysis results show a number of

  8. Predicting floodplain boundary changes following the Cerro Grande wildfire

    Microsoft Academic Search

    Stephen G. McLin; Everett P. Springer

    2001-01-01

    A combined ArcView GIS-HEC modelling application for floodplain analysis of pre- and post-burned watersheds is described. The burned study area is located on Pajarito Plateau near Los Alamos National Laboratory (the Laboratory), where the Cerro Grande Wildfire burned 42 878 acres (17 352 ha) in May 2000. This area is dominated by rugged mountains that are dissected by numerous steep

  9. Seismic Evidence for an Active Southern Rio Grande Rift

    NASA Astrophysics Data System (ADS)

    Thompson, L. E.; Velasco, A. A.

    2010-12-01

    Competing models exist to explain what caused the Earth’s crust to spread apart 29 million years ago to create a region known today as the Rio Grande Rift (RGR). The RGR extends from central Colorado through New Mexico to northern Mexico, near El Paso. A growing body of evidence shows that geologic activity still occurs in the RGR, with a continuation of faulting, seismicity and a small widening rate. We map of the seismic velocity structure and crustal thickness using data from the Rio Grande Rift Seismic TRAnsect (RISTRA) experiment and the EarthScope Transportable Array (USArray) dataset. In addition to the data we collected from the RISTRA experiment and USArray dataset, we also acquired receiver functions from the EarthScope Automatic Receiver Survey (EARS) website (http://www.earthscope.org/data) and waveform data from the Incorporated Research Institutes for Seismology (IRIS) Data Management Center (DMC). In particular, we requested seismograms from the IRIS DMC database where we acquired teleseismic events from Jan 2000 to Dec 2009. This includes 7,259 seismic events with a minimum magnitude of 5.5 and 106,389 continuous waveforms. This data was preprocessed (merged, rotated) using a program called Standing Order of Data (SOD). We computed receiver functions and receiver function stacks for all data in the Southern Rio Grande Rift (SRGR). We map the crustal thickness, seismic velocity, and mantle structure to better determine the nature of tectonic activity that is presently taking place and further investigate the regional extension of the Southern Rio Grande Rift (SRGR). Here we present results of the crustal and velocity structure using the kriging interpolation scheme and interpret our results in relation to southern RGR deformation and extension.

  10. GAUGE: the GrAnd Unification and Gravity Explorer

    Microsoft Academic Search

    G. Amelino-Camelia; K. Aplin; M. Arndt; J. D. Barrow; R. J. Bingham; C. Borde; P. Bouyer; M. Caldwell; A. M. Cruise; T. Damour; P. D’Arrigo; H. Dittus; W. Ertmer; B. Foulon; P. Gill; G. D. Hammond; J. Hough; C. Jentsch; U. Johann; P. Jetzer; H. Klein; A. Lambrecht; B. Lamine; C. Lämmerzahl; N. Lockerbie; F. Loeffler; J. T. Mendonca; J. Mester; W.-T. Ni; C. Pegrum; A. Peters; E. Rasel; S. Reynaud; D. Shaul; T. J. Sumner; S. Theil; C. Torrie; P. Touboul; C. Trenkel; S. Vitale; W. Vodel; C. Wang; H. Ward; A. Woodgate

    2009-01-01

    The GAUGE (GrAnd Unification and Gravity Explorer) mission proposes to use a drag-free spacecraft platform onto which a number\\u000a of experiments are attached. They are designed to address a number of key issues at the interface between gravity and unification\\u000a with the other forces of nature. The equivalence principle is to be probed with both a high-precision test using classical

  11. WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS

    E-print Network

    Garcia, Bianca 1989-

    2011-05-06

    their methods of advertising, technology, demographic market, and distribution locations. These four companies include Watermill Express, Avant, Aquamax, and Waterplex. In this thesis we will describe the water vending industry in the Lower Rio Grande... that will lure consumer?s to want to purchase their water. For example, an advertisement on these watermills will read ?Try Our Water. You?ll Love it!? or ?Great Water.? These advertisements are even translated to Spanish, which will attract their target...

  12. Biology of the Rio Grande border region : a bibliography

    USGS Publications Warehouse

    Johnson, Lynne E.; Jacobs, Linda J.; Papoulias, Diana

    1997-01-01

    This bibliography includes 1,913 references to the literature of the Rio Grande (Rio Bravo del Norte). The specific geographic area covered extends 100 km on either side of the river from Elephant Butte Dam in New Mexico to the Gulf of Mexico. The bibliography focuses on the biological literature, divided into major subject areas, and also includes supporting literature from the physical and environmental sciences.

  13. Economics of Citrus Production in the Rio Grande Valley.

    E-print Network

    Reichardt, Alan W.

    1977-01-01

    Economics of Citrus Production in the Rio Grande Valley B-1178A OP AN G E S ? M 1\\ T lJ PEG F- 0 V -::-. lOP I G ~ T F 0 ? T E )( ~ S ~ I (l G R ~ N DE. V 1\\ L L E Y FSTIMATED CJSTS AND RE TUPNS ~Eq ACRE HIGH L~VfL MANAGEMENT PFJICF: o~ UNIT...

  14. Grande Ronde Basin Supplementation Program; Lostine River, 2000 Annual Report.

    SciTech Connect

    Onjukka, Sam T. (Oregon Department of Fish and Wildlife, Portland, OR); Harbeck, Jim (Nez Perce Tribe, Department of Fisheries Resource Management, Enterprise, OR)

    2003-03-01

    The Northwest Power Planning Council (NPPC) identified supplementation as a high priority to achieve its goal of increasing runs of anadromous fish in the Columbia Basin. Supplementation activities in the Lostine River and associated monitoring and evaluation conducted by the Nez Perce Tribe relate directly to the needs addressed in the Columbia River Basin Fish and Wildlife Program (NPPC 1994). Measure 7.4L.1 of the Program mandates that appropriate research accompany any proposed supplementation. In addition, measure 7.3B.2 of the Program stresses the need for evaluating supplementation projects to assess their ability to increase production. Finally, Section 7.4D.3 encourages the study of hatchery rearing and release strategies to improve survival and adaptation of cultured fish. In 1997, Oregon Department of Fisheries and Wildlife (ODFW) requested a modification of Permit 1011 to allow the take of adult spring chinook salmon. In 1998, the Nez Perce Tribe also requested a permit specific to activities on Lostine River. The permit was issued in 2000. A special condition in the permits required the development of a long term management plan for the spring chinook salmon of the Grande Ronde Basin. The Nez Perce Tribe, ODFW, and the Confederated Tribes of the Umatilla Indian Reservation (CTUIR) completed a formal long range plan entitled ''Grande Ronde Basin Endemic Spring Chinook Salmon Supplementation Program''. The program proposes to increase the survival of spring chinook salmon in the Grand Ronde Basin through hatchery intervention. Adult salmon from the Lostine River, Catherine Creek, and the Upper Grande Ronde River are used for a conventional supplementation program in the basin. The Nez Perce program currently operates under the ESA Section 10 Permit 1149.

  15. Grande Ronde Basin Supplementation Program; Lostine River, 2001 Annual Report.

    SciTech Connect

    Onjukka, Sam T. (Oregon Department of Fish and Wildlife, Portland, OR); Harbeck, Jim (Nez Perce Tribe, Department of Fisheries Resource Management, Enterprise, OR)

    2003-03-01

    The Northwest Power Planning Council (NPPC) identified supplementation as a high priority to achieve its goal of increasing runs of anadromous fish in the Columbia Basin. Supplementation activities in the Lostine River and associated monitoring and evaluation conducted by the Nez Perce Tribe relate directly to the needs addressed in the Columbia River Basin Fish and Wildlife Program (NPPC 1994). Measure 7.4L.1 of the Program mandates that appropriate research accompany any proposed supplementation. In addition, measure 7.3B.2 of the Program stresses the need for evaluating supplementation projects to assess their ability to increase production. Finally, Section 7.4D.3 encourages the study of hatchery rearing and release strategies to improve survival and adaptation of cultured fish. In 1997, Oregon Department of Fisheries and Wildlife (ODFW) requested a modification of Permit 1011 to allow the take of adult spring chinook salmon. In 1998, the Nez Perce Tribe also requested a permit specific to activities on Lostine River. The permit was issued in 2000. A special condition in the permits required the development of a long term management plan for the spring chinook salmon of the Grande Ronde Basin. The Nez Perce Tribe, ODFW, and the Confederated Tribes of the Umatilla Indian Reservation (CTUIR) completed a formal long range plan entitled ''Grande Ronde Basin Endemic Spring Chinook Salmon Supplementation Program''. The program proposes to increase the survival of spring chinook salmon in the Grand Ronde Basin through hatchery intervention. Adult salmon from the Lostine River, Catherine Creek, and the Upper Grande Ronde River are used for a conventional supplementation program in the basin. The Nez Perce program currently operates under the ESA Section 10 Permit 1149.

  16. Stability and Change in U.S. Grand Strategy

    Microsoft Academic Search

    Barry R. Posen

    2007-01-01

    Since the Global War on Terror (more recently termed the Long War) emerged as the centerpiece of U.S. grand strategy in 2001, the post–Cold War U.S. debate has narrowed significantly. Essentially three alternative strategies now compete for pride of place. Two are variants of a “primacy” strategy; one is a variant of “restraint,” sometimes termed “offshore balancing.” All three strategies

  17. Natural variability in forests of the Grand Canyon

    Microsoft Academic Search

    Peter Z. Fule ´; W. Wallace Covington; Margaret M. Moore; Thomas A. Heinlein

    2002-01-01

    Aim Compare contemporary with pre-fire-disruption forest structures, assessing the influence of factors that caused ecological change and evaluating remote sites as relatively natural areas. Location Grand Canyon National Park contains the largest never-harvested and long- term ungrazed forest ecosystem in Arizona, providing valuable sites for measuring natural variability. However, anthropogenic disruption of natural fire regimes since Euro-American settlement c. 1880

  18. Grand Canyon Exercise: Geological Time, History, and Sedimentary Environments.

    NSDL National Science Digital Library

    Dexter Perkins

    1998-01-01

    This site presents a take-home web-based project for introductory geology students. The exercise has the students interpreting the sedimentary geology (lithology and fossils) of the Grand Canyon to create a geological history for the region. It is an open-ended exercise with no absolutely correct answer; it involves students acting as scientists - that is, the way real scientists think and combine information to come up with explanations.

  19. Science Sampler: Map your way to the Grand Canyon

    NSDL National Science Digital Library

    Holly Yoder

    2005-10-01

    How do urban eighth graders from the flatlands of Indiana capture the poetry and grandeur of the Grand Canyon without ever leaving the classroom? By talking and touching and seeing and smelling and listening and...writing. Enhance your eighth-grade geology unit by implementing this inquiry-based activity that stimulates the senses and uses writing as a means of assessment and as a creative outlet into your science curriculum.

  20. Grand Unification as a Bridge Between String Theory and Phenomenology

    Microsoft Academic Search

    Jogesh C. Pati

    2006-01-01

    In the first part of this paper, we explain what empirical evidence points to the need for having an effective grand unification-like symmetry possessing the symmetry SU(4)-color in 4D. If one assumes the premises of a future predictive theory including gravity --- be it string\\/M-theory or a reincarnation --- this evidence then suggests that such a theory should lead to

  1. Grand Uniflcation as a Bridge Between String Theory and Phenomenology

    Microsoft Academic Search

    Jogesh C. Patiy

    In the flrst part of the talk, I explain what empirical evidence points to the need for having an efiective grand uniflcation-like symmetry possessing the symmetry SU(4)- color in 4D. If one assumes the premises of a future predictive theory including gravity|be it string\\/M theory or a reincarnation|this evidence then suggests that such a theory should lead to an efiective

  2. Estimating Rio Grande wild turkey densities in Texas

    E-print Network

    Locke, Shawn Lee

    2009-06-02

    in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Co-Chairs of Committee Roel R. Lopez Nova J. Silvy Committee Members, Markus J. Peterson Sorin C. Popescu Head of Department, Thomas E. Lacher Jr...-Chairs of Advisory Committee: Dr. Roel R. Lopez Dr. Nova J. Silvy Rio Grande wild turkeys (Meleagris gallopavo intermedia) are a highly mobile, wide ranging, and secretive species located throughout the arid regions of Texas. As a result of declines...

  3. Seurat and the Making of La Grande Jatte

    NSDL National Science Digital Library

    Although it seems a touch odd that a museum of the caliber of Art Institute of Chicago has mounted an exhibition based on a single painting, Georges Seurat's A Sunday on La Grande Jatte (1884) is, as stated at the web site, "one of the most beloved, famous, and frequently reproduced paintings in the world ... the painting is an icon and a destination in itself for visitors." To elucidate La Grande Jatte, the show brings together about 130 works of art by Seurat, fellow pointillist painters Paul Signac and Lucien Pissarro, as well as Claude Monet, Pierre Auguste Renoir, and Camille Pissarro. Exhibition themes include Seurat's early years and his color theories, based on optical mixing of colors, and enhancing color intensity by placing dots of contrasting or opposite colors (e.g. red & green) next to each other. There are also sections on Bathing Place, Asnières, a painting that Seurat completed just prior to La Grande Jatte, and Claude Monet's Impressionist paintings of the same landscape. The web site provides enough information to both whet the appetite of those who are willing to travel to Chicago and stand in line for tickets, and to satisfy those who do not wish to make the trip.

  4. Field Studies of Geothermal Reservoirs Rio Grande Rift, New Mexico

    SciTech Connect

    James C Witcher

    2002-07-30

    The Rio Grande rift provides an excellent field laboratory to study the nature of geothermal systems in an extensional environment. Much of the geologic complexity that is found in the Basin and Range is absent because the rift is located on cratonic crust with a thin and well-characterized Phanerozoic stratigraphy and tectonic history. On the other hand, the Neogene thermo-tectonic history of the rift has many parallels with the Basin and Range to the west. The geology of the southern Rio Grande rift is among the best characterized of any rift system in the world. Also, most geologic maps for the region are rather unique in that detailed analyses of Quaternary stratigraphic and surficial unit are added in concert with the details of bedrock geology. Pleistocene to Holocene entrenchment of the Rio Grande and tributaries unroofs the alteration signatures and permeability attributes of paleo outflow plumes and upflow zones, associated with present-day, but hidden or ''blind,'' hydrothermal systems at Rincon and San Diego Mountain.

  5. Electrical resistance sensors record spring flow timing, Grand Canyon, Arizona

    USGS Publications Warehouse

    Adams, E.A.; Monroe, S.A.; Springer, A.E.; Blasch, K.W.; Bills, D.J.

    2006-01-01

    Springs along the south rim of the Grand Canyon, Arizona, are important ecological and cultural resources in Grand Canyon National Park and are discharge points for regional and local aquifers of the Coconino Plateau. This study evaluated the applicability of electrical resistance (ER) sensors for measuring diffuse, low-stage (<1.0 cm) intermittent and ephemeral flow in the steep, rocky spring-fed tributaries of the south rim. ER sensors were used to conduct a baseline survey of spring flow timing at eight sites in three spring-fed tributaries in Grand Canyon. Sensors were attached to a nearly vertical rock wall at a spring outlet and were installed in alluvial and bedrock channels. Spring flow timing data inferred by the ER sensors were consistent with observations during site visits, with flow events recorded with collocated streamflow gauging stations and with local precipitation gauges. ER sensors were able to distinguish the presence of flow along nearly vertical rock surfaces with flow depths between 0.3 and 1.0 cm. Laboratory experiments confirmed the ability of the sensors to monitor the timing of diffuse flow on impervious surfaces. A comparison of flow patterns along the stream reaches and at springs identified the timing and location of perennial and intermittent flow, and periods of increased evapotranspiration.

  6. Electrical resistance sensors record spring flow timing, Grand Canyon, Arizona.

    PubMed

    Adams, Eric A; Monroe, Stephen A; Springer, Abraham E; Blasch, Kyle W; Bills, Donald J

    2006-01-01

    Springs along the south rim of the Grand Canyon, Arizona, are important ecological and cultural resources in Grand Canyon National Park and are discharge points for regional and local aquifers of the Coconino Plateau. This study evaluated the applicability of electrical resistance (ER) sensors for measuring diffuse, low-stage (<1.0 cm) intermittent and ephemeral flow in the steep, rocky spring-fed tributaries of the south rim. ER sensors were used to conduct a baseline survey of spring flow timing at eight sites in three spring-fed tributaries in Grand Canyon. Sensors were attached to a nearly vertical rock wall at a spring outlet and were installed in alluvial and bedrock channels. Spring flow timing data inferred by the ER sensors were consistent with observations during site visits, with flow events recorded with collocated streamflow gauging stations and with local precipitation gauges. ER sensors were able to distinguish the presence of flow along nearly vertical rock surfaces with flow depths between 0.3 and 1.0 cm. Laboratory experiments confirmed the ability of the sensors to monitor the timing of diffuse flow on impervious surfaces. A comparison of flow patterns along the stream reaches and at springs identified the timing and location of perennial and intermittent flow, and periods of increased evapotranspiration. PMID:16961484

  7. Environmental assessment of facility operations at the U.S. Department of Energy Grand Junction Projects Office, Grand Junction, Colorado

    SciTech Connect

    NONE

    1996-06-01

    The US Department of Energy (DOE) has prepared a sitewide environmental assessment (EA) of the proposed action to continue and expand present-day activities on the DOE Grand Junction Projects Office (GJPO) facility in Grand Junction, Colorado. Because DOE-GJPO regularly proposes and conducts many different on-site activities, DOE decided to evaluate these activities in one sitewide EA rather than in multiple, activity-specific documents. On the basis of the information and analyses presented in the EA, DOE has determined that the proposed action does not constitute a major Federal action significantly affecting the quality of the human environment, as defined by the National Environmental Policy Act (NEPA) of 1969. Therefore, preparation of an environmental impact statement is not required for facility operations, and DOE is issuing this Finding of No Significant Impact (FONSI).

  8. Maritime Cliffs and Ironshore -Grand CaymanMaritime Cliffs and Ironshore -Grand Cayman 0 1 2 3 4 50.5

    E-print Network

    Exeter, University of

    Maritime Cliffs and Ironshore - Grand CaymanMaritime Cliffs and Ironshore - Grand Cayman 0 1 2 3 4 Maritime Cliff Ironshore Ironshore Mosaic Beachrock Mosaic #12;Maritime Cliffs and Ironshore - Little CaymanMaritime Cliffs and Ironshore - Little Cayman 0 0.5 1 1.5 2 2.50.25 Kilometers Cayman Islands

  9. No Genetic Evidence for Hybridization Between Rio Grande Sucker, Catostomus Plebeius , and the Introduced White Sucker, Catostomus Commersoni , in the Rio Grande

    Microsoft Academic Search

    Megan V. McPhee; Thomas F. Turner

    2004-01-01

    Hybridization with the introduced white sucker, Catostomus commerson, has been blamed in part for the decline of the Rio Grande sucker, C. plebeius, in the upper Rio Grande basin of Colorado and New Mexico but without convincing evidence. Here we report results from a genetic study of hybridization between the two species across their sympatric range in New Mexico. We

  10. Survey of Seeps and Springs within the Bureau of Land Management's Grand Junction Field Office Management Area

    E-print Network

    Survey of Seeps and Springs within the Bureau of Land Management's Grand Junction Field Office and Springs within the Bureau of Land Management's Grand Junction Field Office Management Area (Garfield County, CO) Prepared for: Bureau of Land Management, Grand Junction Field Office 2815 H Road Grand

  11. Grande Ronde Model Watershed Program FY 1998 Habitat Projects.

    SciTech Connect

    Grande Ronde Model Watershed Staff

    1999-08-01

    The Grande Ronde Model Watershed Program (GRMWP) is the primary entity coordinating habitat restoration on both private and public lands within the Grande Ronde Basin. The Grande Ronde Basin covers approximately 5,300 square miles, containing more than 2600 miles of fish bearing streams, in the Blue Mountains of northeast Oregon. Snake River spring chinook salmon, summer steelhead and bull trout, which are listed under the Endangered Species Act, are present in the basin. The GRMWP began coordinating restoration projects in 1994. Approximately 215 projects have been implemented through the GRMWP program as of 1998. Nine of these projects were funded in part through the Bonneville Power Administration's 1998 Columbia Basin Fish and Wildlife Program. These nine projects used a variety of methods to enhance and restore watershed conditions. In-stream work to improve fish habitat included construction of hard structures (eg. vortex rock weirs), placement of large woody material and whole trees, gravel bar treatments, and improvements to off-channel rearing habitat; 55 miles of stream were treated. Fish passage was improved at three locations by replacing or removing culverts that blocked fish. Stream riparian conditions were enhanced with exclosure fencing, vegetation planting and thinning, noxious weed control, and floodplain enhancements; 10 miles of stream were directly benefited with these riparian improvements. Four spring developments were constructed to enhance riparian and stream conditions by providing off stream livestock water sources. Nine spring developments and 1 reservoir were improved with fencing and/or piping to troughs to reduce sediment runoff and restore riparian habitat. Roads were closed or obliterated (8.5 miles) and road drainage was improved (3.4 miles) to reduce sediment delivery to streams. These nine projects cost approximately 1.3 million dollars to implement and monitor. BPA provided 41% of the funding, the remainder was cost shared by county, state, and federal agencies, private landowners, Indian tribes and natural resource interest groups.

  12. The DOE Grand Challenge in Computational Accelerator Physics

    NASA Astrophysics Data System (ADS)

    Habib, Salman

    1998-04-01

    Particle accelerators are playing an increasingly important role in scientific research and in solving problems of national importance. In particular, efforts are now underway to develop accelerator-driven technologies for transmutation of radioactive waste, disposal of plutonium, energy production, and production of tritium. Next-generation spallation neutron sources based on similar technology will play a major role in materials science and biological science research. Accelerators such as the Large Hadron Collider (LHC), the Next Linear Collider (NLC), and fourth-generation light sources will have a major impact on basic and applied research. For many of these projects, high-resolution modeling far beyond that which has ever been performed by the accelerator community is required to reduce cost and technological risk, and to improve accelerator efficiency, performance, and reliability. In 1997 the U.S. Department of Energy initiated a Grand Challenge in Computational Accelerator Physics. The primary goal of the Grand Challenge is to develop a new generation of accelerator modeling tools for high performance computing platforms, and to apply them to the above-mentioned projects. The new tools will enable the simulation of problems 3 to 4 orders of magnitude larger than has ever been done before. This talk will focus on the beam dynamics effort of the Grand Challenge. Topics that will be discussed include parallel 3D space charge algorithms, high-resolution particle-in-cell codes, and the development of direct Vlasov-Poisson solvers. As an example of recent progress we will present results from a 50 million particle simulation for the accelerator production of tritium (APT) project.

  13. Potential particulate impacts at the Grand Canyon from northwestern Mexico.

    PubMed

    Eatough, D J; Green, M; Moran, W; Farber, R

    2001-08-10

    Project MOHAVE was a major air quality and visibility research program conducted from 1990 to 1999 to investigate the causes of visibility impairment in the Grand Canyon National Park region. At Meadview, a remote monitoring site just west of the Grand Canyon National Park, on September 1 and 2, 1992, the concentrations of sulfate (3.1 and 4.3 microg sulfate/m3) were the highest seen in 6 years of monitoring at this site. During this period, the concentrations of SO2 at Meadview were also abnormally high and approximately three times the sulfate concentrations, on a nmol/m3 basis. High concentrations of sulfate and SO2 extended south into southern Arizona and northwestern Mexico. Based on ambient atmospheric conditions, emissions from the Mohave Power Project (MPP) 110 km upwind of Meadview could not have been responsible for the majority of the regionally observed sulfur oxides. The geographical distribution of SO2 and sulfate, and available source information suggest that northwestern Mexico was a significant source of the unusually high observed sulfur oxides. A CMB model developed during Project MOHAVE was used to apportion sulfur oxides at Meadview and other sampling sites throughout the study region for August 31-September 2, 1992. The results indicate that the contribution of MPP to sulfate at Meadview was typical. However, the transport of SOx from northwestern Mexico was elevated throughout much of the region during this time period. This led to the large increase in sulfate concentrations at Meadview on September 1 and 2. These results indicate that emissions from Mexico can be a significant source of particulate material in the Grand Canyon. PMID:11516140

  14. Aerosol and Transport Climatology at the Grand Canyon

    NASA Astrophysics Data System (ADS)

    Vasconcelos, Luis Alfredo De Paula

    1995-01-01

    This study was carried out to establish a visibility and air quality climatology for the Grand Canyon to help evaluate the extent and conditions under which the degradation of visibility occurs in the region, and to investigate long-term relationships between airmass transport and observations at the sampling sites. The data set analyzed comes from a monitoring program called SCENES, which collected air samples during five years (1984-1989) at several sites around the Grand Canyon. The sampling and analysis of the aerosol were performed for two size fractions and various sampling schedules and analysis protocols were followed. The data set was organized according to these protocols, and then sorted according to parameters, such as the levels of haziness, humidity and a tracer for urban emissions. The aerosol composition was studied as a function of season, location, time of the day and the parameters above. A method was then devised to investigate the potential of routine ATAD back trajectory analyses to locate sources of contaminant in air at the Grand Canyon. The distribution of back trajectory segment endpoints on a latitude-longitude grid was examined as a function of the contaminant's concentration. Grid cells which were preferentially associated with high concentrations of the contaminant were identified as candidate emissions sources. Screening of chance associations due to statistical fluctuations was performed, and results were evaluated for real and hypothetical tracers with known distributions. The method was then applied to the chemical, optical and meteorological measurements made during SCENES to investigate the preferential association of these variables with regions around the Grand Canyon. Chemical mass balance calculations performed under different conditions of the atmosphere indicate that aerosols in the region exhibit substantial seasonal variation in composition and concentration, but little systematic diurnal variation. The ambient humidity affects the composition of the aerosol, but not its total concentration. Although fine mass correlated strongly with light scattering, as expected, little association between chemical composition and light scattering was seen. Results of the back trajectory analysis showed that the method was able to resolve the direction of potential sources, but with poor radial precision. In general, the lowest levels of fine-mass and sulfur concentrations, as well as of light scattering by particles, are associated with northerly flow. Airmasses from the north generally have higher speeds than the ones from the south, and are transported over regions with fewer emission sources; they are less likely to accumulate pollutants. The airmasses with the highest fine-mass concentrations and light scattering values usually come from the south, and they are consistently associated with both southern California and central and southern Arizona.

  15. Guide for Citrus Production in the Lower Rio Grande Valley.

    E-print Network

    Maxwell, Norman P. (Norman Paul); Bailey, Morris A.

    1963-01-01

    the rooting zone soil should be applied to provide for moderate leaching. The soil must have adequate natural or artificial drainage. Soils in the Lower Ria Grande Valley vary in CJ-MODERATELY HIGH - SALINITY WATER 500 to 1000 texture from coarse sandv... are too saline for citrus production. Many of these soils have inadequate natural drainage and are difficult to drain artificially. Generally, since the coarser-textured, well-drained soils are least likely to be saline, they are the best for citrus...

  16. Cotton Irrigation in the Lower Rio Grande Valley.

    E-print Network

    Gerard, C. J. (Cleveland Joseph); Burleson , C. A.; Crowley, W. R.; Namken, L. N.; Bloodworth, M. E.

    1964-01-01

    Grande Valley Experiment Station since 1949 to find answers to some of the prob- lems of soil and water management in cotton production and to find ways of making more efficient use of the limited supply of irrigation water. Studies to determine.... The purpose of this publication is to sum- marize the results of the studies and to propose irrigation schedules for coarse and medium-tex- tured soils such as the Willacy and Hidalgo soil series and fine-textured soils such as the Harlin- gen clay...

  17. EE Times: Preparing for the Next 'DARPA Grand Challenge'

    NSDL National Science Digital Library

    This article from EE Times tracks the status of Team Overbot, "a group of enthusiasts, engineers, and partners" who are building an autonomous robot vehicle for the October 8, 2005 DARPA (Defense Advanced Research Projects Agency) Grand Challenge. The annual Challenge, sponsored by DARPA, requires designers to develop an autonomous robot vehicle that can successfully make a trek through all kinds of terrain covering about 150 miles. The prize of $2 million has proven difficult to win, with none of the vehicles finishing last year's course. The article describes the contest and this team's design methodology.

  18. Seismic investigation of the southern Rio Grande Rift

    NASA Astrophysics Data System (ADS)

    Thompson, Lennox E.

    Competing models exist to explain what caused the Earth's crust to spread apart 29 million years ago to create a region known today as the Rio Grande Rift (RGR). The RGR extends from central Colorado through New Mexico to northern Mexico, near El Paso. The RGR has different geologic features that distinguish it from most other valleys (e.g., the RGR was not cut by a river nor does a river branch upstream). A growing body of evidence shows that geologic activity still occurs in the RGR, with a continuation of faulting, seismicity and widening at a small rate of about 0.3 mm/yr (Woodward , 1977). We map of the seismic velocity structure and crustal thickness using data from the Rio Grande Rift Seismic TRAnsect (RISTRA) experiment and the EarthScope Transportable Array (USArray) dataset. In addition to the data we collected from the RISTRA experiment and USArray dataset, we also acquired receiver functions from the EarthScope Automatic Receiver Survey (EARS) website (http://www.earthscope.org/data) and waveform data from the Incorporated Research Institutes for Seismology (IRIS) Data Management Center (DMC). We requested seismograms from the IRIS DMC database where we acquired teleseismic events from Jan 2000 to Dec 2009. This includes 7,259 seismic events with a minimum magnitude of 5.5 and 106,389 continuous waveforms. This data was preprocessed (merged, rotated) using a program called Standing Order of Data (SOD). The RISTRA experiment and the USArray were designed to image crust and mantle structures by computing receiver functions for all data in the Southern Rio Grande Rift (SRGR). We map the crustal thickness, seismic velocity, and mantle structure for the sole purpose to better determine the nature of tectonic activity that is presently taking place and further investigate the regional extension of the Southern Rio Grande Rift (SRGR). Here we present preliminary results of the crustal and velocity structure using the kriging interpolation scheme seem stable and we are now able to clearly observe certain patterns we can use to interpret the southern RGR deformation and extension.

  19. Grande Ronde Endemic Spring Chinook Project - ODFW, 2008 Annual Report.

    SciTech Connect

    Patterson, Scott

    2009-04-10

    Core activities of the Grande Ronde Endemic Spring Chinook Supplementation Program (GRESCSP) are funded through the authority of the Lower Snake River Fish and Wildlife Compensation Plan (LSRCP). The LSRCP program was approved by the Water Resources Development Act of 1976, PL 94-587, Section 102, 94th Congress substantially in accordance with the Special Report, LSRCP, June 1975 on file with the Chief of Engineers. The LSRCP was prepared and submitted in compliance with the Fish and Wildlife Coordination Act of 1958, PL 85-624, 85th Congress, August 12, 1958 to mitigate for the losses of fish and wildlife caused by the construction of dams on lower Snake River. The GRESCSP is an artificial propagation program that was initiated by Bonneville Power Administrations Fish and Wildlife program in the mid 1990's. The intent of this program was to change the mitigation aspect of the LSRCP program (harvest mitigation) to an integrated supplementation program; inasmuch as, hatchery produced fish could be experimentally used as a recovery tool and fish surplus to mitigation would be available for in-place and in-kind harvest. Fish production is still authorized by the LSRCP with the original mitigation return goal of 5,860 adult spring Chinook to the project area. The GRESCSP was developed with two primary components: (1) conventional broodstock (projects 199800702; 199800703; 199800704) and (2) captive brood (projects 199801001; 199801006). The GRESCSP relies on cooperative M&E efforts from the LSRCP including setting aside the Wenaha and Minam tributaries as natural production reserves components used for reference streams. The GRESCSP, coordinated with federal and tribal partners, identifies production levels for both propagation components and weir management strategies for each of the three supplemented tributary areas within the Grande Ronde Sub-basin. The three supplemented areas are Catherine Creek, Lostine River, and upper Grande Ronde River. Lookingglass Creek, an extirpated area, will be stocked (smolts and adults) with Catherine Creek origin salmon to initiate natural production in unseeded habitat, and to initiate future harvest opportunities. The current production levels have been incorporated into the U.S. v. Oregon Interim Management Agreement. The purpose of this contract is to integrate Bonneville Power Administration (BPA) efforts with the Lower Snake River Compensation Plan (LSRCP) program utilizing Lookingglass Hatchery as the primary rearing facility. BPA constructed an adult holding and spawning structure on the hatchery grounds; however, maintenance of this infrastructure was discontinued due to funding limitation and transferred to the LSRCP program in 2007. These integrated efforts focus on holding and spawning adults, rearing juveniles, fish health, and monitoring natural production (Redd counts) for Catherine Creek, Lostine River, and Upper Grande Ronde stocks.

  20. Sugarcane Trials in the Lower Rio Grande Valley of Texas.

    E-print Network

    Cowley, W. R.; Smith, B. A.

    1969-01-01

    the his- torical concept of the adaptation of sugarcane to the environmental conditions of the Lower Rio Grande Valley of Texas. The potentials for yields of cane and sugar indi- cated by these studies compare most favorably with those reported from....2 pounds with acre yields of 6,460 and 4,098 pounds. Fanguy (19), reporting on the results of sugarcane variety outfield experiments in Louisiana in 1967, indicated top yields from combined locations in the range of 33 tons per acre and sugar yields...

  1. Les grandes tapes de la vie de Georges Cuvier

    E-print Network

    17 Les grandes étapes de la vie de Georges Cuvier L'enfant de Montbéliard (1769-1784) Le 23 août 1769, naît à Montbéliard Jean Léopold Nicolas Frédéric Cuvier, surnommé Georges par sa mère, née Anne (1765-1767) et Georges Frédéric (1773-1838) dit Frédéric. Sa maison natale se trouve au 22, rue Cuvier

  2. Rio Grande Wild Turkey in Texas: Biology and Management

    E-print Network

    Cathey, James; Melton, Kyle; Dreibelbis, Justin; Cavney, Bob; Locke, Shawn; DeMaso, Stephen; Schwertner, T. Wayne; Collier, Bret

    2007-09-11

    Rio Grande yekruT dliW In Texas: Biology and Management B-6198 08-07 James C. Cathey, Texas Cooperative Extension, The Texas A&M University System Kyle Melton, Department of Wildlife and Fisheries Sciences, Texas A&M University Justin... Department Upland Game Bird Program for funding for this work, and the Institute of Renewable Natural Resources at Texas A&M University for their support. Photographs were provided by D. Lang Alford, James R. Cathey, James C. Cathey, Kyle Melton, Justin...

  3. Grande Ronde Basin Fish Habitat Enhancement Project : 2000 Annual Report.

    SciTech Connect

    McGowan, Vance R.; Powell, Russ M.; Stennfeld, Scott P.

    2001-04-01

    On July 1, 1984 the Bonneville Power Administration and the Oregon Department of Fish and Wildlife entered into an agreement to initiate fish habitat enhancement work in the Joseph Creek subbasin of the Grande Ronde River Basin in northeast Oregon. In July of 1985 the Upper and Middle Grande Ronde River, and Catherine Creek subbasins were included in the intergovernmental contract, and on March 1, 1996 the Wallowa River subbasin was added. The primary goal of ''The Grande Ronde Basin Fish Habitat Enhancement Project'' is to access, create, improve, protect, and restore riparian and instream habitat for anadromous salmonids, thereby maximizing opportunities for natural fish production within the basin. This project provided for implementation of Program Measure 703 (C)(1), Action Item 4.2 of the Northwest Power Planning Council's Columbia River Basin Fish and Wildlife Program (NPPC, 1987), and continues to be implemented as offsite mitigation for mainstem fishery losses caused by the Columbia River hydro-electric system. All work conducted by the Oregon Department of Fish and Wildlife is on private lands and therefore requires that considerable time be spent developing rapport with landowners to gain acceptance of, and continued cooperation with this program throughout 10-15 year lease periods. This project calls for passive regeneration of habitat, using riparian enclosure fencing as the primary method to restore degraded streams to a normative condition. Active remediation techniques using plantings, off-site water developments, site-specific instream structures, or whole channel alterations are also utilized where applicable. Individual projects contribute to and complement ecosystem and basin-wide watershed restoration efforts that are underway by state, federal, and tribal agencies, and local watershed councils. Work undertaken during 2000 included: (1) Implementing 2 new projects in the Grande Ronde drainage, and retrofitting one old project that will protect an additional 1.3 miles of stream and 298.3 acres of habitat; (2) Conducting instream work activities in 3 streams to enhance habitat and/or restore natural channel dimensions, patterns or profiles; (3) Improving fish passage in Bear Creek to restore tributary and mainstem access; (4) Planting and seeding 6.7 stream miles with 7,100 plants and 365 lbs. of seed; (5) Establishing 18 new photopoints and retaking 229 existing photopoint pictures; (6) Monitoring stream temperatures at 12 locations on 6 streams; (7) completing riparian fence, water gap and other maintenance on 98.7 miles of project fences. Since initiation of the project in 1984 over 62 miles of anadromous fish bearing streams and 1,910 acres of habitat have been protected, enhanced and maintained.

  4. THE "GRAND HISTORIANS" USE OF THE CONCEPT OF DISORGANIZATION

    E-print Network

    Ireland, Ralph R.

    1966-10-01

    systems rise to domi.nance , Kroeber is also a cult.ural determinist and t s cllaracterizsd by his use of geniu5les as indices of a atiIiulating cu.ltural en'Viro».meat rather' thGZl · as agerrts of cul,« t~alflo~acence. II The "Grand liistorians" In his.... Again, he spends a Whole chapter, heavily laden with statistics, dealing with war magnitudes.l~oattempt is made to show how the figures representing these magnitudes could be used as indices of social disorganization. Only fleeting references are made...

  5. Grand challenges in bioengineered nanorobotics for cancer therapy.

    PubMed

    Lenaghan, Scott C; Wang, Yongzhong; Xi, Ning; Fukuda, Toshio; Tarn, Tzyhjong; Hamel, William R; Zhang, Mingjun

    2013-03-01

    One of the grand challenges currently facing engineering, life sciences, and medicine is the development of fully functional nanorobots capable of sensing, decision making, and actuation. These nanorobots may aid in cancer therapy, site-specific drug delivery, circulating diagnostics, advanced surgery, and tissue repair. In this paper, we will discuss, from a bioinspired perspective, the challenges currently facing nanorobotics, including core design, propulsion and power generation, sensing, actuation, control, decision making, and system integration. Using strategies inspired from microorganisms, we will discuss a potential bioengineered nanorobot for cancer therapy. PMID:23380844

  6. SU(5) grand unification in pure gravity mediation

    NASA Astrophysics Data System (ADS)

    Evans, Jason L.; Nagata, Natsumi; Olive, Keith A.

    2015-03-01

    We discuss the proton lifetime in pure gravity mediation models with nonuniversal Higgs soft masses. Pure gravity mediation offers a simple framework for studying SU(5) grand unified theories with a split supersymmetrylike spectra. We find that for much of the parameter space gauge coupling unification is quite good leading to rather long lifetimes for the proton. However, for m3 /2˜60 TeV and tan ? ˜4 , for which gauge coupling unification is also good, the proton lifetime is short enough that it could be in reach of future experiments.

  7. Early Agriculture in the Eastern Grand Canyon of Arizona, USA

    USGS Publications Warehouse

    Davis, S.W.; Davis, M.E.; Lucchitta, I.; Finkel, R.; Caffee, M.

    2000-01-01

    Abandoned fields in Colorado River alluvium in the eastern Grand Canyon show signs of primitive agriculture. Presence of maize pollen in association with buried soils near Comanche Creek suggests that farming began prior to 3130 yr B.P. Cotton pollen, identified in buried soils near Nankoweap Creek, dates to 1310 yr B.P., approximately 500 years earlier than previously reported anywhere on the Colorado Plateau. Farming spanned three millennia in this reach of the canyon. Entrenchment, starting approximately 700 yr B.P., making water diversion to fields infeasible, was likely responsible for field abandonment. ?? 2000 John Wiley & Sons, Inc.

  8. Reviewing the success of intentional flooding of the Grand Canyon

    SciTech Connect

    Wirth, B.D. [Bureau of Reclamation, Salt Lake City, UT (United States)

    1997-04-01

    A description and evaluation of the results of an intentional flooding experiment at the Grand Canyon are described. The purpose of the 7-day release of flood waters from the Glen Canyon Dam was to determine if managed floods have the ability to predictably restore the riverine environment. A summary of environmental conditions leading to the experiment is provided and flood results are listed. Initial results showed significant improvement in the size and number of the river`s beaches, creation of backwater habitat for endangered species, and no adverse impact to the trout fishery, Indian cultural sites, and other resources.

  9. A FADC-based data acquisition system for the KASCADE-Grande experiment

    Microsoft Academic Search

    W. Walkowiak; T. Antoni; W. D. Apel; F. Badea; K. Bekk; A. Bercuci; M. Bertaina; H. Blumer; H. Bozdog; I. M. Brancus; M. Bruggemann; P. Buchholz; C. Buttner; A. Chiavassa; K. Daumiller; F. di Pierro; P. Doll; R. Engel; J. Engler; F. Fessler; P. L. Ghia; H. J. Gils; R. Glasstetter; A. Haungs; D. Heck; J. R. Horandel; K.-H. Kampert; H. O. Klages; Y. Kolotaev; G. Maier; H. J. Mathes; H. J. Mayer; J. Milke; B. Mitrica; C. Morello; M. Muller; G. Navarra; R. Obenland; J. Oehlschlager; S. Ostapchenko; S. Over; M. Petcu; S. Plewnia; H. Rebel; A. Risse; M. Roth; H. Schieler; J. Scholz; M. Stumpert; T. Thouw; G. Toma; G. C. Trinchero; H. Ulrich; S. Valchierotti; J. van Buren; A. Weindl; J. Wochele; J. Zabierowski; S. Zagromski; D. Zimmermann

    2004-01-01

    We present the design and first test results of a new FADC-based data acquisition (DAQ) system for the Grande array of the KASCADE-Grande experiment. The original KASCADE experiment at the Forschungszentrum Karlsruhe, Germany, has been extended by 37 detector stations of the former EAS-TOP experiment (Grande array) to provide sensitivity to energies for primary particles from the cosmos up to

  10. Female homicide in Rio Grande do Sul, Brazil.

    PubMed

    Leites, Gabriela Tomedi; Meneghel, Stela Nazareth; Hirakata, Vania Noemi

    2014-01-01

    This study aimed to assess the female homicide rate due to aggression in Rio Grande do Sul, Brazil, using this as a "proxy" of femicide. This was an ecological study which correlated the female homicide rate due to aggression in Rio Grande do Sul, according to the 35 microregions defined by the Brazilian Institute of Geography and Statistics (IBGE), with socioeconomic and demographic variables access and health indicators. Pearson's correlation test was performed with the selected variables. After this, multiple linear regressions were performed with variables with p < 0.20. The standardized average of female homicide rate due to aggression in the period from 2003 to 2007 was 3.1 obits per 100 thousand. After multiple regression analysis, the final model included male mortality due to aggression (p = 0.016), the percentage of hospital admissions for alcohol (p = 0.005) and the proportion of ill-defined deaths (p = 0.015). The model have an explanatory power of 39% (adjusted r2 = 0.391). The results are consistent with other studies and indicate a strong relationship between structural violence in society and violence against women, in addition to a higher incidence of female deaths in places with high alcohol hospitalization. PMID:25272258

  11. Geomorphology of plutonium in the Northern Rio Grande

    SciTech Connect

    Graf, W.L. [Arizona Univ., Tempe, AZ (United States). Dept., of Geography

    1993-03-01

    Nearly all of the plutonium in the natural environment of the Northern Rio Grande is associated with soils and sediment, and river processes account for most of the mobility of these materials. A composite regional budget for plutonium based on multi-decadal averages for sediment and plutonium movement shows that 90 percent of the plutonium moving into the system is from atmospheric fallout. The remaining 10 percent is from releases at Los Alamos. Annual variation in plutonium flux and storage exceeds 100 percent. The contribution to the plutonium budget from Los Alamos is associated with relatively coarse sediment which often behaves as bedload in the Rio Grande. Infusion of these materials into the main stream were largest in 1951, 1952, 1957, and 1968. Because of the schedule of delivery of plutonium to Los Alamos for experimentation and weapons manufacturing, the latter two years are probably the most important. Although the Los Alamos contribution to the entire plutonium budget was relatively small, in these four critical years it constituted 71--86 percent of the plutonium in bedload immediately downstream from Otowi.

  12. BotEC: The Grand Canyon's Rate of Erosion

    NSDL National Science Digital Library

    Peter Kresan

    Question: Some geologic processes, like volcanism and earthquakes, occur intermittently but can cause significant and sometimes catastrophic change very quickly. Others, like weathering, act continuously but gradually, in fact, imperceptibly slow. Regardless of how they operate, geologic processes, acting over long periods of time (thousands and millions of years) will produce significant change in the earth's surface. If you were to occasionally visit the Grand Canyon over a period of many years, you would most likely notice no change. Even the details in the walls would probably seem frozen forever. Yet the Colorado River is continuously, albeit very slowly, cutting into and eroding the Colorado Plateau. The Grand Canyon is gradually being deepened and enlarged. Some geologists are finding evidence that suggests that this mile deep canyon may have been cut with the last 4 million years. Assuming a uniform rate of erosion and without considering canyon widening due to slop retreat, calculate how much (in millimeters per year) the Colorado River would have to downcut per year to form this mile-deep canyon in 4 million years.

  13. Grand Unification as a Bridge Between String Theory and Phenomenology

    SciTech Connect

    Pati, Jogesh C.

    2006-06-09

    In the first part of the talk, I explain what empirical evidence points to the need for having an effective grand unification-like symmetry possessing the symmetry SU(4)-color in 4D. If one assumes the premises of a future predictive theory including gravity--be it string/M theory or a reincarnation--this evidence then suggests that such a theory should lead to an effective grand unification-like symmetry as above in 4D, near the string-GUT-scale, rather than the standard model symmetry. Advantages of an effective supersymmetric G(224) = SU(2){sub L} x SU(2){sub R} x SU(4){sup c} or SO(10) symmetry in 4D in explaining (1) observed neutrino oscillations, (2) baryogenesis via leptogenesis, and (3) certain fermion mass-relations are noted. And certain distinguishing tests of a SUSY G(224) or SO(10)-framework involving CP and flavor violations (as in {mu} {yields} e{gamma}, {tau} {yields} {mu}{gamma}, edm's of the neutron and the electron) as well as proton decay are briefly mentioned. Recalling some of the successes we have had in our understanding of nature so far, and the current difficulties of string/M theory as regards the large multiplicity of string vacua, some comments are made on the traditional goal of understanding vis a vis the recently evolved view of landscape and anthropism.

  14. The Oro Grande, New Mexico, chondrite and its lithic inclusion.

    NASA Technical Reports Server (NTRS)

    Fodor, R. V.; Keil, K.; Jarosewich, E.

    1972-01-01

    The Oro Grande, New Mexico, U.S.A., chondrite was found in 1971. Electron microprobe analyses and microscopic examination show the following mineralogy: olivine (Fa 19.3 mole %), orthopyroxene (Fs 16.2 mole %), diopside, feldspar (An 13.6 mole %), chlorapatite, whitlockite, kamacite, taenite, troilite, chromite, and an iron-bearing terrestrial weathering product. A bulk chemical analysis of the meteorite shows the following results (weight %): Fe 0.84, Ni 1.46, Co 0.07, FeS 3.62, SiO2 34.18, TiO2 0.14, Al2O3 1.83, Cr2O3 0.55, Fe2O3 21.25, FeO 9.13, MnO 0.31, MgO 21.52, CaO 1.72, Na2O 0.70, K2O 0.08, P2O5 0.25, H2O(+) 2.14, H2O(-) 0.40, C 0.22, sum 100.41. On the basis of composition and texture the Oro Grande meteorite is classified as an H5 chondrite.

  15. Predictive Temperature Equations for Three Sites at the Grand Canyon

    NASA Astrophysics Data System (ADS)

    McLaughlin, Katrina Marie Neitzel

    Climate data collected at a number of automated weather stations were used to create a series of predictive equations spanning from December 2009 to May 2010 in order to better predict the temperatures along hiking trails within the Grand Canyon. The central focus of this project is how atmospheric variables interact and can be combined to predict the weather in the Grand Canyon at the Indian Gardens, Phantom Ranch, and Bright Angel sites. Through the use of statistical analysis software and data regression, predictive equations were determined. The predictive equations are simple or multivariable best fits that reflect the curvilinear nature of the data. With data analysis software curves resulting from the predictive equations were plotted along with the observed data. Each equation's reduced chi2 was determined to aid the visual examination of the predictive equations' ability to reproduce the observed data. From this information an equation or pair of equations was determined to be the best of the predictive equations. Although a best predictive equation for each month and season was determined for each site, future work may refine equations to result in a more accurate predictive equation.

  16. Grand challenges in mass storage: A systems integrators perspective

    NASA Technical Reports Server (NTRS)

    Lee, Richard R.; Mintz, Daniel G.

    1993-01-01

    Within today's much ballyhooed supercomputing environment, with its CFLOPS of CPU power, and Gigabit networks, there exists a major roadblock to computing success; that of Mass Storage. The solution to this mass storage problem is considered to be one of the 'Grand Challenges' facing the computer industry today, as well as long into the future. It has become obvious to us, as well as many others in the industry, that there is no clear single solution in sight. The Systems Integrator today is faced with a myriad of quandaries in approaching this challenge. He must first be innovative in approach, second choose hardware solutions that are volumetric efficient; high in signal bandwidth; available from multiple sources; competitively priced, and have forward growth extendibility. In addition he must also comply with a variety of mandated, and often conflicting software standards (GOSIP, POSIX, IEEE, MSRM 4.0, and others), and finally he must deliver a systems solution with the 'most bang for the buck' in terms of cost vs. performance factors. These quandaries challenge the Systems Integrator to 'push the envelope' in terms of his or her ingenuity and innovation on an almost daily basis. This dynamic is explored further, and an attempt to acquaint the audience with rational approaches to this 'Grand Challenge' is made.

  17. Bringing Seismology's Grand Challenges to the Undergraduate Classroom

    NASA Astrophysics Data System (ADS)

    Benoit, M. H.; Taber, J.; Hubenthal, M.

    2011-12-01

    The "Seismological Grand Challenges in Understanding Earth's Dynamic Systems," a community-written long-range science plan for the next decade, poses 10 questions to guide fundamental seismological research. Written in an approachable fashion suitable for policymakers, the broad questions and supporting discussion contained in this document offer an ideal framework for the development of undergraduate curricular materials. Leveraging this document, we have created a collection of inquiry-based classroom modules that utilize authentic data to modernize seismological instruction in 100 and 200 level undergraduate courses. The modules not only introduce undergraduates to the broad questions that the seismological community seeks to answer in the future but also showcase the numerous areas where modern seismological research is actively contributing to our understanding of fundamental Earth processes. To date 6 in-depth explorations that correspond to the Grand Challenges document have been developed. The specific topics for each exploration were selected to showcase modern seismological research while also covering topics commonly included in the curriculum of these introductory classes. Examples of activities that have been created and their corresponding Grand Challenge include: -A guided inquiry that introduces students to episodic tremor and slip and compares the GPS and seismic signatures of ETS with those produced from standard tectonic earthquakes (Grand Challenge "How do faults slip?"). - A laboratory exercise where students engage in b-value mapping of volcanic earthquakes to assess potential eruption hazards (How do magmas ascend and erupt?). - A module that introduce students to glacial earthquakes in Greenland and compares their frequency and spatial distribution to tectonic earthquakes (How do processes in the ocean and atmosphere interact with the solid Earth?). What is the relationship between stress and strain in the lithosphere? - An activity that examines the phenomena of earthquake triggering by distant events. (What is the relationship between stress and strain in the lithosphere?) To enhance the usefulness of these resources, all have been developed in a modular fashion which allows instructors to pick and choose some (or all) of these resources for integration in to the scope and sequence of their course. In addition to the in-depth labs, we also have created a number of mini-activities and visual material for the classroom, including think-pair-shares and lecture tutorials based on the following Grand Challenges: -What is the lithosphere-asthenosphere boundary? -How do plate boundary systems evolve? -How do temperature and composition variations control mantle and core convection? -How are Earth's internal boundaries affected by dynamics? Over the next year we will be pilot testing and refining these activities at a number of institutions, including 2- and 4-year colleges, and the materials will eventually be disseminated online and through small training workshops. Current drafts of some of the activities are available at www.tcnj.edu/~benoit/grandchallenges.

  18. Controlled Flooding of the Colorado River in the Grand Canyon

    NSDL National Science Digital Library

    1997-01-01

    The controlled flood of the Colorado River in the Grand Canyon can be monitored in real time on the U.S. Geological Survey's (USGS) Web site. Starting on March 26 and continuing for seven days, the Bureau of Reclamation (BOR) is releasing approximately 45,000 cubic feet of water per second from Glen Canyon Dam. Line graphs of provisional stream flow data at 15 sites in Arizona are being made available in real time on the Internet via satellite telemetry technology. "This controlled flood will provide an excellent opportunity to demonstrate the usefulness of the real-time network during flooding conditions." Historical stream flow data is also available, as are calculated hydrographs, channel sand data, and detailed fact sheets on the rationale of the study and data collection methods. http://wwwdaztcn.wr.usgs.gov/flood.html

  19. Exploring the {alpha}p-process with Grand Raiden

    SciTech Connect

    O'Brien, S.; Berg, G. P. A.; Couder, M.; Goerres, J.; Patel, D.; Sault, K.; Wiescher, M. [Dept. of Physics and the Joint Institute for Nuclear Astrophysics, University of Notre Dame, Indiana (United States); Adachi, T.; Hatanaka, K.; Ishikawa, D.; Matsubara, H.; Okamura, H.; Ong, H. J.; Suzuki, T.; Tamii, A.; Zenihiro, J. [Research Center for Nuclear Physics, Osaka University, Osaka (Japan); Dozono, M.; Wakasa, T. [Dept. of Physics, Kyushu University, Fukuoka (Japan); Fujita, H. [Research Center for Nuclear Physics, Osaka University, Osaka (Japan); School of Physics, University of Witwatersrand, Johannesburg (South Africa); Fujita, Y. [Dept. of Physics, Osaka University, Osaka (Japan)] (and others)

    2009-01-28

    {sup 22}Mg, {sup 30}S, {sup 34}Ar and {sup 38}Ca have been investigated using (p,t) reactions at RCNP with the intent of identifying energy levels in nuclei that determine the reaction rates along the pathway of the {alpha}p-process. These experiments exploit the high resolution and 0 deg. capabilities of the Grand Raiden spectrometer and the WS beamline, which can deliver a fully dispersion matched beam to target. The level information is vital to understanding the nucleosynthesis occurring during explosive hydrogen burning, which, for example, is thought to occur during type I X-ray bursts. In the case of {sup 22}Mg, new reaction rate calculations have been performed for the {sup 18}Ne({alpha},p){sup 21}Na reaction. The experimental technique will be discussed, and the experimental results will be presented.

  20. Heating facilities for the MGM Grand Hotel, Reno, Nevada

    SciTech Connect

    Not Available

    1981-09-01

    The MGM Grand Hotel-Reno is located adjacent to an area with a well-documented geothermal resource. Currently, there is a number of entities seeking to determine the exact nature of the resource at the MGM site. This report concerns itself with identifying current natural gas loads within the MGM complex which could be met by geothermal should a source become available. The two principle assumptions upon which the following material is based are (1) that a source of 190/sup 0/F or higher temperature water is available and (2) all systems discussed would be installed in parallel with existing systems. That is, existing systems would remain in place providing 100 percent backup for the geothermal systems.

  1. A groundwater convection model for Rio Grande rift geothermal resources

    NASA Technical Reports Server (NTRS)

    Morgan, P.; Harder, V.; Daggett, P. H.; Swanberg, C. A.

    1981-01-01

    It has been proposed that forced convection, driven by normal groundwater flow through the interconnected basins of the Rio Grande rift is the primary source mechanism for the numerous geothermal anomalies along the rift. A test of this concept using an analytical model indicates that significant forced convection must occur in the basins even if permeabilities are as low as 50-200 millidarcies at a depth of 2 km. Where groundwater flow is constricted at the discharge areas of the basins forced convection can locally increase the gradient to a level where free convection also occurs, generating surface heat flow anomalies 5-15 times background. A compilation of groundwater data for the rift basins shows a strong correlation between constrictions in groundwater flow and hot springs and geothermal anomalies, giving strong circumstantial support to the convection model.

  2. Grand Ronde Basin Fish Habitat Enhancement Project, 2008 Annual Report.

    SciTech Connect

    McGowan, Vance R.; Morton, Winston H. [Oregon Department of Fish and Wildlife] [Oregon Department of Fish and Wildlife

    2009-07-01

    On July 1, 1984 the Bonneville Power Administration and the Oregon Department of Fish and Wildlife entered into an intergovernmental contract to initiate fish habitat enhancement work in the Joseph Creek subbasin of the Grande Ronde River Basin in northeast Oregon. In 1985 the Upper and Middle Grande Ronde River, and Catherine Creek subbasins were included in the contract, and in 1996 the Wallowa River subbasin was added. The primary goal of 'The Grande Ronde Basin Fish Habitat Enhancement Project' is to create, protect, and restore riparian and instream habitat for anadromous salmonids, thereby maximizing the opportunities for natural fish production within the basin. This project originally provided for implementation of Program Measure 703 (C)(1), Action Item 4.2 of the Northwest Power Planning Council's Columbia River Basin Fish and Wildlife Program (NPPC, 1987), and continues to be implemented under revisions of the Fish and Wild Program as offsite mitigation for mainstem fishery losses caused by the Columbia River hydro-electric system. All work conducted by the Oregon Department of Fish and Wildlife and partners is on private lands and therefore requires considerable time be spent developing rapport with landowners to gain acceptance, and continued cooperation with this program throughout 10-15 year lease periods. Both passive and active restoration treatment techniques are used. Passive regeneration of habitat, using riparian exclosure fencing and alternate water sources, is the primary method to restore degraded streams when restoration can be achieved primarily through changes in management. Active restoration techniques using plantings, bioengineering, site-specific instream structures, or whole stream channel alterations are utilized when streams are more severely degraded and not likely to recover in a reasonable timeframe. Individual projects contribute to and complement ecosystem and basin-wide watershed restoration efforts that are underway by state, federal, and tribal agencies, and coordinated by the Grande Ronde Model Watershed Program (Project. No. 199202601). Work undertaken during 2008 included: (1) completing 1 new fencing project in the North Fork John Day subbasin that protects 1.82 miles of stream and 216.2 acres of habitat, and 1 fencing project in the Wallowa subbasin that protects an additional 0.59 miles of stream and 42.5 acres of habitat; (2) constructing 0.47 miles of new channel on the Wallowa river to enhance habitat, restore natural channel dimensions, pattern and profile and reconnect approximately 18 acres of floodplain and wetland habitat; (3) planting 10,084 plants along 0.5 miles of the Wallowa Riverproject; (4) establishing 34 new photopoints on 5 projects and retaking 295 existing photopoint pictures; (5) monitoring stream temperatures at 10 locations on 5 streams and conducting other monitoring activities; (6) completing riparian fence, water gap and other maintenance on 116.8 miles of project fences; and (7) completed a comprehensive project summary report to the Independent Scientific Review panel (ISRP) that provided our conclusions regarding benefits to focal species, along with management recommendations for the future. Since initiation of this program 57 individual projects have been implemented, monitoring and maintained along 84.9 miles of anadromous fish bearing streams, that protect and enhance 3,564 acres of riparian and instream habitat.

  3. Grande Ronde Basin Fish Habitat Enhancement Project : 2007 Annual Report.

    SciTech Connect

    McGowan, Vance R.; Morton, Winston H.

    2008-12-30

    On July 1, 1984 the Bonneville Power Administration and the Oregon Department of Fish and Wildlife entered into an intergovernmental contract to initiate fish habitat enhancement work in the Joseph Creek subbasin of the Grande Ronde River Basin in northeast Oregon. In 1985 the Upper and Middle Grande Ronde River, and Catherine Creek subbasins were included in the contract, and in 1996 the Wallowa River subbasin was added. The primary goal of 'The Grande Ronde Basin Fish Habitat Enhancement Project' is to create, protect, and restore riparian and instream habitat for anadromous salmonids, thereby maximizing opportunities for natural fish production within the basin. This project provided for implementation of Program Measure 703 (C)(1), Action Item 4.2 of the Northwest Power Planning Council's Columbia River Basin Fish and Wildlife Program (NPPC, 1987), and continues to be implemented as offsite mitigation for mainstem fishery losses caused by the Columbia River hydro-electric system. All work conducted by the Oregon Department of Fish and Wildlife and partners is on private lands and therefore requires that considerable time be spent developing rapport with landowners to gain acceptance of, and continued cooperation with this program throughout 10-15 year lease periods. Both passive and active restoration treatment techniques are used. Passive regeneration of habitat, using riparian exclosure fencing and alternate water sources are the primary method to restore degraded streams when restoration can be achieved primarily through changes in management. Active restoration techniques using plantings, bioengineering, site-specific instream structures, or whole stream channel alterations are utilized when streams are more severely degraded and not likely to recover in a reasonable timeframe. Individual projects contribute to and complement ecosystem and basin-wide watershed restoration efforts that are underway by state, federal, and tribal agencies, and coordinated by the Grande Ronde Model Watershed Program (Project. No.199202601). Work undertaken during 2007 included: (1) Starting 1 new fencing project in the NFJD subbasin that will protect an additional 1.82 miles of stream and 216.2 acres of habitat; (2) Constructing 0.47 miles of new channel on the Wallowa River to enhance habitat, restore natural channel dimensions, pattern and profile and reconnect approximately 18 acres of floodplain and wetland habitat; (3) Planting 22,100 plants along 3 streams totaling 3.6 stream miles; (4) Establishing 34 new photopoints on 5 projects and retaking 295 existing photopoint pictures; (5) Monitoring stream temperatures at 10 locations on 5 streams and conducting other monitoring activities; (6) Completing riparian fence, water gap and other maintenance on 116.8 miles of project fences; (7) Initiated writing of a comprehensive project summary report that will present a summary of conclusions of the benefits to focal species and management recommendations for the future. Since initiation of this program 56 individual projects have been implemented, monitored and maintained along 84.8 miles of anadromous fish bearing streams that protect and enhance 3,501 acres of riparian and instream habitat.

  4. Ethiopia's Grand Renaissance Dam: Implications for Downstream Riparian Countries

    NASA Astrophysics Data System (ADS)

    Zhang, Y.; Block, P. J.; Hammond, M.; King, A.

    2013-12-01

    Ethiopia has begun seriously developing their significant hydropower potential by launching construction of the Grand Ethiopian Renaissance Dam (GERD) on the Blue Nile River to facilitate local and regional growth. Although this has required substantial planning on Ethiopia's part, no policy dictating the reservoir filling rate strategy has been publicly issued. This filling stage will have clear implications on downstream flows in Sudan and Egypt, complicated by evaporative losses, climate variability, and climate change. In this study, various filling policies and future climate states are simultaneously explored to infer potential streamflow reductions at Lake Nasser, providing regional decision-makers with a set of plausible, justifiable, and comparable outcomes. Schematic of the model framework Box plots of 2017-2032 percent change in annual average streamflow at Lake Nasser for each filling policy constructed from the 100 time-series and weighted precipitation changes. All values are relative to the no dam policy and no changes to future precipitation.

  5. The Grand Leap of the Whale up the Niagara Falls.

    PubMed

    Holm, Søren

    2015-04-01

    This article analyzes a neat conjuring trick employed in bioethics, that is, the immediate conversion of a philosophical conclusion into a policy prescription, and compares it to the "grand leap of the whale up the Niagara Falls" mentioned by Benjamin Franklin. It is shown that there is no simple and easy way to achieve the conversion, by considering arguments falling under four headings: (1) reasonable disagreement about values and theories, (2) general jurisprudential arguments, (3) the differences between policymaking and philosophy, and (4) the messy world of implementation. The particular issue used to illustrate the difficulties in moving from philosophical conclusion to policy description is infanticide of healthy infants, but the analysis is general, and the conclusion that the immediate move to policy is illegitimate is quite general. PMID:25719355

  6. Model grand potential for a nonuniform classical fluid

    SciTech Connect

    Percus, J.K.

    1981-08-01

    Classical equilibrium statistical mechanics of one-dimensional hard cores in an arbitrary external field is reviewed. The grand canonical potential is shown to be an extension of local thermodynamics in which suitable averages of density and pressure are used. A general three-dimensional system with arbitrary internal and external potentials is modeled in corresponding form, and the external potential represented as a functional of the density. Comparison with assumed bulk data permits evaluation of the required averages. It is shown that the wall equation of state for a wall-bounded fluid is satisfied exactly. Application is also made to the self-maintained density profile of the two-phase fluid at a first order phase transition.

  7. Bringing Seismology's Grand Challenges to the Undergraduate Classroom

    NASA Astrophysics Data System (ADS)

    Benoit, M. H.; Hubenthal, M.; Taber, J.

    2012-12-01

    The "Seismological Grand Challenges in Understanding Earth's Dynamic Systems," a community-written long-range science plan for the next decade, poses 10 questions to guide fundamental seismological research. Written in an approachable fashion suitable for policymakers, the broad questions and supporting discussion contained in this document offer an ideal framework for the development of undergraduate curricular materials. Leveraging this document, we have created a collection of inquiry-based classroom modules that utilize authentic data to modernize seismological instruction in 100 and 200 level undergraduate courses. The modules not only introduce undergraduates to the broad questions that the seismological community seeks to answer in the future but also showcase the numerous areas where modern seismological research is actively contributing to our understanding of fundamental Earth processes. To date 6 in-depth explorations that correspond to the Grand Challenges document have been developed. The specific topics for each exploration were selected to showcase modern seismological research while also covering topics commonly included in the curriculum of these introductory classes. The activities that have been created and their corresponding Grand Challenge are: -A guided inquiry that introduces students to episodic tremor and slip and compares the GPS and seismic signatures of ETS with those produced from standard tectonic earthquakes (Grand Challenge "How do faults slip?"). - A laboratory exercise where students engage in b-value mapping of volcanic earthquakes to assess potential eruption hazards (How do magmas ascend and erupt?). - A module that introduces students to glacial earthquakes in Greenland and compares their frequency and spatial distribution to tectonic earthquakes (How do processes in the ocean and atmosphere interact with the solid Earth?). -A suite of activities that introduce students to oil and gas exploration, including an activity that introduces the concept of shale gas exploration (Where are water and hydrocarbons hidden beneath the surface?) -A guided inquiry module that leads students to understand the differences between lithosphere and asthenosphere (What is the lithosphere-asthenosphere boundary?) - A module where students explore earthquake hazards and probability of ground shaking in southern California, New Madrid, and their own location. (How does the near-surface environment affect natural hazards and resources?). To enhance the usefulness of these resources, all have been developed in a modular fashion that allows instructors to pick and choose some (or all) of these resources for integration in to the scope and sequence of their course. Each module will include an instructor's guide containing instructions for implementing the activity, assessment strategies, and other resources. Formative pilot testing at 2- and 4- year colleges will take place fall 2012. Ultimately, the modules will be disseminated online through IRIS's InClass web portal and through small training workshops. Current drafts of some of the activities can be obtained by emailing M. Benoit (benoit@tcnj.edu).

  8. The Grand Banks ERS-1 SAR wave spectra validation experiment

    NASA Technical Reports Server (NTRS)

    Vachon, P. W.; Dobson, F. W.; Smith, S. D.; Anderson, R. J.; Buckley, J. R.; Allingham, M.; Vandemark, D.; Walsh, E. J.; Khandekar, M.; Lalbeharry, R.

    1993-01-01

    As part of the ERS-1 validation program, the ERS-1 Synthetic Aperture Radar (SAR) wave spectra validation experiment was carried out over the Grand Banks of Newfoundland (Canada) in Nov. 1991. The principal objective of the experiment was to obtain complete sets of wind and wave data from a variety of calibrated instruments to validate SAR measurements of ocean wave spectra. The field program activities are described and the rather complex wind and wave conditions which were observed are summarized. Spectral comparisons with ERS-1 SAR image spectra are provided. The ERS-1 SAR is shown to have measured swell and range traveling wind seas, but did not measure azimuth traveling wind seas at any time during the experiment. Results of velocity bunching forward mapping and new measurements of the relationship between wind stress and sea state are also shown.

  9. Proton Stability in Grand Unified Theories and Discrete Gauge Symmetries

    SciTech Connect

    Mohapatra, R. N. [Maryland Center for Fundamental Physics and Department of Physics, University of Maryland, College Park, MD-20742 (United States)

    2008-05-13

    Most supersymmetric grand unified theories face the problem of rapid proton decay coming either from R-parity violating interactions and/or from Planck scale induced R-parity conserving operators, possibly induced by non-perturbative Planck scale effects such as black holes or wormholes. In this talk, I argue in favor of the possibility that a natural way to resolve this problem is to assume that there are new discrete or continuous gauge symmetries accompanying these theories that resolve these problems while at the same time allowing enough flexibility to have a viable model. I discuss this for left-right and SO(10) theories and discuss the profound impact such considerations have on the construction of realistic GUT models. I then discuss a recently proposed SO(10) model which has only apparently string inspired multiplets and has enough structure to be a realistic model.

  10. Grand Canyon Trekkers: school-based lunchtime walking program.

    PubMed

    Hawthorne, Alisa; Shaibi, Gabriel; Gance-Cleveland, Bonnie; McFall, Sarah

    2011-02-01

    The incidence of childhood overweight is especially troubling among low income Latino youth. Grand Canyon Trekkers (GCT) was implemented as a quasi-experimental study in 10 Title 1 elementary schools with a large Latino population to examine the effects of a 16-week structured walking program on components of health-related physical fitness: Body Mass Index (BMI), waist circumference, and cardio-respiratory. Data on 1,074 research participants revealed no significance changes in BMI or waist circumference (p > .05); however, cardio-respiratory fitness increased by 37.1% over baseline. Cardiovascular fitness is an independent determinant of long-term health; therefore, the GCT program may have significantly improved the future health profile of the participants and decreased their risk of metabolic diseases. PMID:21123848

  11. Arsenic in the Middle Rio Grande: Occurrence and regulatory standards

    SciTech Connect

    Flanigan, K.G. [Balleau Groundwater, Inc., Albuquerque, NM (United States)

    1995-12-31

    Arsenic is present throughout the environment, occurring both naturally and as a result of human activity. Natural sources of arsenic include arsenic gases and compounds formed as a result of volcanic and geothermal activity and weathering of minerals and ores containing arsenic. Major sources of human-related release include smelting of ores and use of arsenic containing pesticides. Additional sources from commercial and industrial processes include use of arsenic-containing wood preservatives and paints and pigments. Arsenic occurs in the Middle Rio Grande Basin in central New Mexico both naturally and as a result of human activity. The paper describes the occurrence of arsenic in surface water and stream sediments, groundwater and subsequent discharge via wastewater effluent, and biota. Water standards are also discussed.

  12. The most important points in grand slam singles tennis.

    PubMed

    O'Donoghue, P G

    2001-06-01

    A computerized data management system was used to enter details of points played in 252 tennis matches from the men's and women's singles events of all four Grand Slam tournaments over a 2-year period. A supplementary data analysis system was developed to determine the proportion of points won by each player on serve at each game score from love all to deuce as well as the proportion of games the player went on to win from each score. Analysis of the 43 matches in which both players served at each score from love all to deuce revealed that the proportion of points won by the server was not significantly influenced by score, F(15, 495) = 0.8, p > .05. A further analysis of the 175 matches consisting of at least 100 points revealed that the proportion of points won by the superior player was not significantly influenced by gender, F(1, 165) = 0.1, p > .05, or surface, F(3, 165) = 0.1, p > .05. However, the proportion of points won when serving was significantly greater in men's singles than women's singles, F(1, 165) = 69.7, p < .001, R2 = .30. Surface also had a significant influence on the proportion of points won when serving, F(3, 165) = 8.1, p < .001, R2 = .13, with a significantly greater proportion of points won when serving by both winning and losing players at Wimbledon than at the Australian and French Opens, p < .05. This suggests that gender and surface should be accounted for when determining the importance of points in Grand Slam tennis. PMID:11393875

  13. Web-based Interactive Landform Simulation Model - Grand Canyon

    NASA Astrophysics Data System (ADS)

    Luo, W.; Pelletier, J. D.; Duffin, K.; Ormand, C. J.; Hung, W.; Iverson, E. A.; Shernoff, D.; Zhai, X.; Chowdary, A.

    2013-12-01

    Earth science educators need interactive tools to engage and enable students to better understand how Earth systems work over geologic time scales. The evolution of landforms is ripe for interactive, inquiry-based learning exercises because landforms exist all around us. The Web-based Interactive Landform Simulation Model - Grand Canyon (WILSIM-GC, http://serc.carleton.edu/landform/) is a continuation and upgrade of the simple cellular automata (CA) rule-based model (WILSIM-CA, http://www.niu.edu/landform/) that can be accessed from anywhere with an Internet connection. Major improvements in WILSIM-GC include adopting a physically based model and the latest Java technology. The physically based model is incorporated to illustrate the fluvial processes involved in land-sculpting pertaining to the development and evolution of one of the most famous landforms on Earth: the Grand Canyon. It is hoped that this focus on a famous and specific landscape will attract greater student interest and provide opportunities for students to learn not only how different processes interact to form the landform we observe today, but also how models and data are used together to enhance our understanding of the processes involved. The latest development in Java technology (such as Java OpenGL for access to ubiquitous fast graphics hardware, Trusted Applet for file input and output, and multithreaded ability to take advantage of modern multi-core CPUs) are incorporated into building WILSIM-GC and active, standards-aligned curricula materials guided by educational psychology theory on science learning will be developed to accompany the model. This project is funded NSF-TUES program.

  14. Rio Grande, San Luis Hills, and Blanca Peak in San Luis Basin

    USGS Multimedia Gallery

    Photo captures the Rio Grande, volcanic San Luis Hills, and Blanca Peak massif in the San Luis Basin, part of the Rio Grande rift.  The basin - currently being studied by the USGS - is of interest for groundwater, petroleum, and mineral resources. ...

  15. 77 FR 7574 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-13

    ...14349-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...the Grand Coulee Project Hydroelectric Authority (GCPHA) filed...section 4(f) of the Federal Power Act, proposing to study...the P.E. 16.4 Wasteway Hydroelectric Project, to be located...

  16. 77 FR 7574 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-13

    ...14352-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...the Grand Coulee Project Hydroelectric Authority (GCPHA) filed...section 4(f) of the Federal Power Act, proposing to study...E. Scooteney Wasteway Hydroelectric Project, to be located...

  17. 77 FR 38050 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-26

    ...14380-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...2012, Grand Coulee Project Hydroelectric Authority filed an application...section 4(f) of the Federal Power Act (FPA), proposing to...feasibility of the Pinto Dam Hydroelectric Project (Pinto Dam...

  18. 77 FR 23243 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-18

    ...14372-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...2012, Grand Coulee Project Hydroelectric Authority filed an application...section 4(f) of the Federal Power Act (FPA), proposing to...the Rocky Coulee Wasteway Hydroelectric Project (project) to...

  19. 77 FR 7143 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-10

    ...14351-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...the Grand Coulee Project Hydroelectric Authority (GCPHA) filed...section 4(f) of the Federal Power Act, proposing to study...the P.E. 46A Wasteway Hydroelectric Project, to be located...

  20. ASSESSING TRANSBOUNDARY INFLUENCES IN THE LOWER RIO GRANDE VALLEY (COMMUNITY SUMMARY)

    EPA Science Inventory

    The Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was done to determine if movement of air pollutants across the U.S.-Mexico border was occurring in the Lower Rio Grande Valley (hereinafter called "the Valley") and, if so, the extent. The study w...

  1. Peak discharge of a Pleistocene lava-dam outburst flood in Grand Canyon, Arizona, USA

    E-print Network

    Peak discharge of a Pleistocene lava-dam outburst flood in Grand Canyon, Arizona, USA Cassandra R Received 6 May 2005 Availble online 7 February 2006 Abstract The failure of a lava dam 165,000 yr ago produced the largest known flood on the Colorado River in Grand Canyon. The Hyaloclastite Dam was up to 366

  2. 78 FR 40081 - Safety Zone; Antique Boat Show, Niagara River, Grand Island, NY

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-03

    ...mile course located near the Buffalo Launch Club in Grand Island...September. The Captain of the Port Buffalo has determined that hydroplane...safety zone will encompass all waters of Niagara River, Grand Island...by the Captain of the Port Buffalo or his on-scene...

  3. Independent External Peer Review Rio Grande Floodway, San Acacia to Bosque Del Apache,

    E-print Network

    US Army Corps of Engineers

    Independent External Peer Review Rio Grande Floodway, San Acacia to Bosque Del Apache, New Mexico and maintenance Office of Management and Budget Probability of Unsatisfactory Performance SADD San Acacia performed an Independent External Peer Review (IEPR) of the Rio Grande Floodway, San Acacia to Bosque Del

  4. Second century megadrought in the Rio Grande headwaters, Colorado: How unusual was medieval drought?

    E-print Network

    Woodhouse, Connie

    in Colorado River flow [Meko et al., 2007], and the "Great Drought" associated with the abandonment of AncientSecond century megadrought in the Rio Grande headwaters, Colorado: How unusual was medieval drought bristle- cone pine (Pinus aristata) wood from the headwaters region of the Rio Grande River, Colorado

  5. Tree rings and multiseason drought variability in the lower Rio Grande Basin, USA

    E-print Network

    Castro, Christopher L.

    Tree rings and multiseason drought variability in the lower Rio Grande Basin, USA C. A. Woodhouse,1 to vulnerability to multiseason drought. The lower Rio Grande basin in New Mexico, used as a case study here, has experienced drought conditions over the past 12 years characterized both by low local summer monsoon

  6. BOTANICAL SURVEY OF WINTER PARK RESORT, ARAPAHO NATIONAL FOREST, GRAND COUNTY, COLORADO

    E-print Network

    BOTANICAL SURVEY OF WINTER PARK RESORT, ARAPAHO NATIONAL FOREST, GRAND COUNTY, COLORADO Colorado Collins, Colorado 80523-8002 #12;BOTANICAL SURVEY OF WINTER PARK RESORT, ARAPAHO NATIONAL FOREST, GRAND COUNTY, COLORADO Prepared for: Doug Laraby, Winter Park Resort P.O. Box 36 Winter Park, CO 80482 and U

  7. Shearwater diet during migration along the coast of Rio Grande do Sul, Brazil

    Microsoft Academic Search

    Maria Virginia Petry; Vanda Simone da Silva Fonseca; Lucas Krüger-Garcia; Roberta da Cruz Piuco; Jaqueline Brummelhaus

    2008-01-01

    The coastline of the state of Rio Grande do Sul (Brazil) is used annually as a migratory route by a number of seabird species.\\u000a Thirteen surveys were carried out between July 1997 and July 1998 to obtain information on the diet of Puffinus gravis, Puffinus griseus, and Puffinus puffinus along the coast of Rio Grande do Sul. Sampling efforts focused

  8. 33 CFR 100.106 - Freeport Grand Prix, Long Beach, NY.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Freeport Grand Prix, Long Beach, NY. 100.106 Section 100.106...100.106 Freeport Grand Prix, Long Beach, NY. (a) Regulated area. The...waters of Long Island to the south of Long Beach, New York. The regulated area is...

  9. C : N : P stoichiometry of dominant riparian trees and arthropods along the Middle Rio Grande

    Microsoft Academic Search

    TERESA M. TIBBETS; MANUEL C. MOLLES JR

    2005-01-01

    SUMMARY 1. We examined the role of flooding on the leaf nutrient content of riparian trees by comparing the carbon : nitrogen : phosphorus (C : N : P) ratio of leaves and litter of Rio Grande cottonwood (Populus deltoides ssp. wislizenii) in flood and non-flood sites along the Middle Rio Grande, NM, U.S.A. The leaf C : N :

  10. Optimization-Based Navigation for the DARPA Grand Challenge Dmitriy Kogan and Richard M. Murray

    E-print Network

    Murray, Richard M.

    Optimization-Based Navigation for the DARPA Grand Challenge Dmitriy Kogan and Richard M. Murray fields of interest to autonomous robotics, DARPA, the research arm of the Department of Defense of the United States, sponsored the DARPA Grand Challenge (DGC), an off-road race for autonomous, land

  11. A Bayesian approach for the rainfall-runoff The case of Rio Grande Basin

    E-print Network

    Ravines, Romy R.

    A Bayesian approach for the rainfall-runoff problem: The case of Rio Grande Basin Romy R. Ravines, January 12, 2006 Abstract We present a joint analysis of runoff and rainfall data from Rio Grande, a basin. In practice, precipitation is measured in more than one monitoring sta- tion within a basin, thus some

  12. "U.S.R.S., Grand Valley Project, Colo. Sprocket, shaft and chain for ...

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

    "U.S.R.S., Grand Valley Project, Colo. Sprocket, shaft and chain for 70 ft. roller hoist. May 14, 1915." Note that on this and other working drawings of the roller gates, the German manufacturer/patent holder is not acknowledged - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  13. 30. VIEW SHOWING AUTOMATIC DEMOSSING RACK, GRAND CANAL AT 99TH ...

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

    30. VIEW SHOWING AUTOMATIC DEMOSSING RACK, GRAND CANAL AT 99TH AVENUE, LOOKING WEST. THIS MACHINE SCOOPS UP FLOATING WEEDS AND OTHER DEBRIS AND CONVEYS IT TO A TRASH DUMPSTER. Photographer: Mark Durben, April 1989 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

  14. Magnetic Investigation of Ancestral Puebloan Rio Grande (New Mexico) Glaze Wares

    Microsoft Academic Search

    J. B. Dyer; J. W. Geissman; A. F. Ramenofsky

    2007-01-01

    In geologically heterogeneous regions, such as the Rio Grande, archaeologists typically rely on petrographic analyses to determine ceramic provenance and reconstruct prehistoric trade patterns. Even in these regions, other methods are useful for elucidating trade patterns and\\/or resolving ambiguities from the petrographic data. Magnetic properties of Ancestral central Rio Grande Puebloan ceramics are being acquired to assess their use in

  15. Efficient Irrigation for Water Conservation in the Rio Grande Basin: 2010/2011 Progress and Accomplishments

    E-print Network

    Kalisek, D.; Harris, B. L.; Runyan, C.; DeMouche, L.

    Since 2001, the Efficient Irrigation for Water Conservation in the Rio Grande Basin Federal Initiative-known as the Rio Grande Basin Initiative (RGBI)-has saved more than 5 million acre-feet of water. Researchers, Extension specialists, and county...

  16. CLNS 96/1412 ThreeFamily SO(10) Grand Unification in String Theory

    E-print Network

    CLNS 96/1412 Three­Family SO(10) Grand Unification in String Theory Zurab Kakushadze \\Lambda and S­handed families in the four­dimensional heterotic string theory is presented. The model has one SO(10) adjoint be solved by considering grand unification in string theory. As we shall see, after imposing some rather

  17. 75 FR 49022 - San Luis & Rio Grande Railroad-Petition for a Declaratory Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-12

    ...Board [Docket No. FD 35380] San Luis & Rio Grande Railroad--Petition for a Declaratory...response to a petition filed by the San Luis & Rio Grande Railroad (SLRG), the Board is...planned to begin operations there on May 25, 2010. The County, however, filed...

  18. NOTES ON FISHES OF GRAND RIVER, CHOUTEAU CREEK, AND PRYOR CREEK, MAYES COUNTY, OKLAHOMA

    Microsoft Academic Search

    Loren G. Hill; William J. Matthews; Tony Schene; Kenneth Asbury

    1981-01-01

    comprising an ecotone. Branson considered Grand River an effective barrier to dispersal of fishes between the two faunas. We find that despite marked alteration by impoundment, Grand River remains a boundary between eastern and western fishes. We took typical Ozark fishes such as Notropis boops (bigeye shiner), Notropis camurus (bluntface shiner), Campostoma anomalum (central stoneroller), and Etheostoma spectabile (orangethroat darter)

  19. Notice of Release of Zapata Germplasm Rio Grande Clammyweed Selected Class of Natural Germplasm

    Microsoft Academic Search

    Paula D Maywald; Shelly D Maher; Juan Garza; John Lloyd-Reilley; Forrest S Smith; Andrew W. Scott; Keith A Pawelek

    2010-01-01

    : A selected germplasm of Rio Grande clammyweed (Polanisia dodecandra (L.) DC. ssp. riograndensis Iltis [Capparaceae]) has been released for rangeland restoration and wildlife habitat enhancement plantings in south Texas. Zapata Germplasm Rio Grande clammyweed is a warm-season annual forb originating from seed collected from native plants in Dimmitt and Zapata counties of south Texas. Collections were selected based on

  20. 77 FR 58820 - Grand River Dam Authority; Notice of Application Accepted for Filing, Soliciting Comments...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-24

    ...Grand Lake O' Cherokees. g. Filed Pursuant to: Federal Power Act, 16 U.S.C. 791a-825r. h. Applicant Contact: Ms. Tamara E. Jahnke, Assistant General Counsel, Grand River Dam Authority, P.O. Box 409, Vinita, Oklahoma 74301, (918)...

  1. Nuisible ou gibier ? Une analyse conomique de la chasse des grands animaux en France

    E-print Network

    Boyer, Edmond

    Nuisible ou gibier ? Une analyse économique de la chasse des grands animaux en France Carole ROPARS Nuisible ou gibier ? Une analyse économique de la chasse des grands animaux en France Carole ROPARS-COLLET Agrocampus Ouest, UMR1302, F-35000 Rennes, France INRA, UMR1302, F-35000 Rennes, France Philippe LE GOFFE

  2. A Parallel Java Grande Benchmark Suite L. A. Smith and J. M. Bull

    E-print Network

    Bull, Mark

    A Parallel Java Grande Benchmark Suite L. A. Smith and J. M. Bull EPCC, The King's Buildings Republic. email: xobdrzal@fi.muni.cz Abstract Increasing interest is being shown in the use of Java for large scale or Grande applications. This new use of Java places specific demands on the Java execution

  3. Determination of the Origin of the Sediments Discharged by the Ro Grande de Aasco

    E-print Network

    Gilbes, Fernando

    Determination of the Origin of the Sediments Discharged by the Río Grande de Añasco Ketlyn A the origin and composition of sediments discharged by the Rio Grande de Añasco (RGA). Sediments at the mouth techniques and selected laboratory analyses to determine the origin and composition of sediments discharged

  4. 78 FR 52783 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-26

    ...established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this...with abandoned structures in the Natural Area and a discussion of...

  5. 78 FR 9729 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-11

    ...established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this...with abandoned structures in the Natural Area and a tour of the Wild...

  6. Residues of Toxaphene in Insectivorous Birds (Petrochelidon spp.) From the Rio Grande, Texas

    E-print Network

    Mora, Miguel A.

    /Accepted: 10 August 2004 Abstract. Although it has been documented that wildlife in the Rio Grande Valley 1991), was used heavily in the southern United States as an agricultural pesticide for cotton, soybean the economy and thus land use in this watershed, particularly in the lower Rio Grande Valley (LRGV). As such

  7. A DISTRIBUTED VISION SYSTEM FOR BOAT TRAFFIC MONITORING IN THE VENICE GRAND CANAL

    E-print Network

    Iocchi, Luca

    A DISTRIBUTED VISION SYSTEM FOR BOAT TRAFFIC MONITORING IN THE VENICE GRAND CANAL D.Bloisi, L that has been realized for analyzing and com- puting statistics of trafic in the Grand Canal in Venice-bus fleet was equipped with GPS satellite receivers and a first rough speed and trajectory monitoring system

  8. A Probability of Revisitation Model: The Case of Winter Visits to the Grand Canyon

    Microsoft Academic Search

    Luiz Moutinho; John Trimble

    1991-01-01

    This paper finds that on average first-time visitors to the Grand Canyon are willing to travel significantly greater distances than repeat visitors. These findings are based upon a binary logit model of repeat visitations estimated from a recent sample of Grand Canyon visitors. This model expresses the probability of repeat visitation as a function of distance travelled and visitor demographic

  9. Modeling complex human–environment interactions: the Grand Canyon river trip simulator

    Microsoft Academic Search

    Catherine A. Roberts; Doug Stallman; Joanna A. Bieri

    2002-01-01

    Understanding the impacts of human recreation on natural resources is of critical importance in constructing effective management strategies. The Grand Canyon River Trip Simulator is a computer program that models complex, dynamic human–environment interactions in the river corridor of the Grand Canyon National Park. The system consists of a database and simulator engine. The database contains 487 trip diaries that

  10. Age and diet of fossil California condors in Grand Canyon, Arizona

    Microsoft Academic Search

    S. D. EMSLIE

    1987-01-01

    A dozen new radiocarbon dates, together with a thorough review of its fossil distribution, shed new light on the time and probable cause of extinction of the California condor, Gymnogyps californianus, in Grand Canyon, Arizona. The radiocarbon data indicate that this species became extinct in Grand Canyon, and other parts of the inland West, more than 10,000 years ago in

  11. Apprentissage discriminant des GMM `a grande marge pour la verification automatique du locuteur

    E-print Network

    Boyer, Edmond

    Apprentissage discriminant des GMM `a grande marge pour la v´erification automatique du locuteur´elange de Gaussiennes (GMM) sont commun´ement utilis´es en reconnaissance automatique du locuteur. Ils sont'apprentissage discriminant des GMM (`a matrices de covariance diagonales) minimisant une fonction de perte `a grande marge

  12. Flood Obelisk, Red River of the North, Grand Forks, North Dakota

    USGS Multimedia Gallery

    Flood obelisk marking the greatest floods from 1882-1997 at Grand Forks, North Dakota. This has become a famous landmark to compare current conditions to past events. This picture was taken on March 15, 2010, just before the Red River began to flood at Grand Forks....

  13. A new grand canonical ensemble method to calculate first-order phase transitions.

    PubMed

    Tang, Yiping

    2011-06-14

    A theory about first-order phase transition of pure fluids is proposed. The theory is developed by combining grand canonical ensemble with density functional for homogeneous fluids. It is based on the fact that the grand partition function of one macroscopic volume is the product of the grand partition functions of its subvolumes. Density fluctuations of molecules determine the relation between the grand partition function and the free energy density. By combining pairs of subvolumes successively, the free energy density is transformed and rapidly becomes stationary. The stationary curve versus molecule density is convex and its linear segments represent phase transitions. The transform leads to the new grand canonical method to calculate phase equilibrium, which is more robust than classic ones. The transform suggests that classical van der Waals loop is physical and essential to phase transition. PMID:21682526

  14. Unusual Recharge Processes near Arroyos of the Rio Grande Aquifer, El Paso/Juarez Area

    NASA Astrophysics Data System (ADS)

    Merino, M.; Hibbs, B. J.; Hogan, J.; Eastoe, C. J.; Druhan, J.

    2005-12-01

    The twin-cities of El Paso and Juarez share the water resources of the Hueco Bolson aquifer and overlying Rio Grande aquifer. Both aquifers span the international border between Mexico and the United States. Salinity in the Rio Grande aquifer varies widely, some parts of the shallow aquifer containing less than 1,000 mg/L total dissolved solids (TDS), other parts of the aquifer exceeding 5,000 mg/L TDS. One sizable part of the "Lower Valley" area, approximately 45 km below El Paso contains very dilute water near the outer edge of the floodplain. Historically it had been thought that the dilute waters in this location were derived from recharge from arroyos that drained proximal parts of the Hueco Bolson. Instead, our hydrogen and oxygen isotope data and carbon-14 data indicate that these dilute waters were derived from pre-dam infiltration of the Rio Grande. Relatively light and slightly evaporated pre-dam waters (-11.5 del O18) at the arroyos are also relatively young (60 to 90 percent modern carbon), tagging them as runoff waters from pre-dam snowmelt in Colorado. These isotopically light waters are found up to 110 meters beneath land surface. Prior to Rio Grande rectification and channelization of the mid-1930's, the Rio Grande flowed near the outer edge of the floodplain where these pre-dam, dilute waters are found at depth. Review of predevelopment drill stem tests indicated a permeable zone about 150 to 230 meters deep that had a lower hydraulic head than the overlying Rio Grande aquifer. The permeable zone acted as a predevelopment sink for flow that induced recharge from the Rio Grande and Rio Grande aquifer. Thus, we can account for local predevelopment recharge of the Rio Grande aquifer from infiltration of dilute water from the Rio Grande prior to the historic era of channel rectification, and not from recharge from flanking arroyos as had been postulated by previous researchers.

  15. 77 FR 32993 - Notice of Inventory Completion: U.S. Department of Agriculture, Forest Service, Rio Grande...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-04

    ...Agriculture, Forest Service, Rio Grande National Forest, 1803...Repatriation Act (NAGPRA), 25 U.S.C. 3003, of the completion...Agriculture, Forest Service, Rio Grande National Forest, and...responsibilities under NAGPRA, 25 U.S.C....

  16. 76 FR 6496 - Special Flight Rules Area in the Vicinity of Grand Canyon National Park, Draft Environmental...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-04

    ...DEPARTMENT OF THE INTERIOR National Park Service Special Flight Rules Area in the Vicinity of Grand Canyon National Park, Draft Environmental Impact Statement, Grand Canyon National Park, AZ AGENCY: National Park...

  17. 78 FR 10262 - Norfolk Southern Railway Company-Temporary Trackage Rights Exemption-Grand Trunk Western Railroad...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-13

    ...Railway Company--Temporary Trackage Rights Exemption--Grand Trunk Western Railroad...Ltd. Pursuant to a temporary trackage rights agreement dated January 24, 2013, Grand...agreed to grant temporary overhead trackage rights \\1\\ to Norfolk Southern Railway...

  18. Team CIMAR's NaviGATOR: An Unmanned Ground Vehicle for Application to the 2005 DARPA Grand Challenge

    E-print Network

    Florida, University of

    Team CIMAR's NaviGATOR: An Unmanned Ground Vehicle for Application to the 2005 DARPA Grand DARPA Grand Challenge event. After a brief description of the event, the architecture, based on version. Keywords: DARPA Grand Challenge, autonomous navigation, path planning, sensor fusion, world modeling

  19. 77 FR 15600 - Special Local Regulation; Emerald Coast Super Boat Grand Prix; Saint Andrew Bay; Panama City, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-16

    ...1625-AA08 Special Local Regulation; Emerald Coast Super Boat Grand Prix; Saint Andrew...persons on navigable waters during the Emerald Coast Super Boat Grand Prix high speed...from safety hazards associated with the Emerald Coast Super Boat Grand Prix high...

  20. 76 FR 21855 - Rio Grande National Forest, Divide Ranger District; Mineral County, CO; Village at Wolf Creek...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-19

    ...SUMMARY: The Rio Grande National Forest...30-7 p.m. on April 25, in Creede, CO at the...27 in Del Norte at the Rio Grande County Annex Building...30-7:00 p.m. on April 25, in Creede, CO at the...in Del Norte, CO at the Rio Grande County Annex...

  1. 77 FR 15006 - Special Local Regulations; Third Annual Space Coast Super Boat Grand Prix, Atlantic Ocean, Cocoa...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-14

    ...during the Third Annual Space Coast Super Boat Grand...host the Third Annual Space Coast Super Boat Grand...PART 100--SAFETY OF LIFE ON NAVIGABLE WATERS 1...Regulations; Third Annual Space Coast Super Boat Grand...petty officers, and other officers operating...

  2. Frequency and initiation of debris flows in Grand Canyon, Arizona Peter G. Griffiths and Robert H. Webb

    E-print Network

    Frequency and initiation of debris flows in Grand Canyon, Arizona Peter G. Griffiths and Robert H 2004. [1] Debris flows from 740 tributaries transport sediment into the Colorado River in Grand Canyon River in Grand Canyon, and repeat photography provides a 100 year record of debris flows from 147

  3. Changes in the water surface profile of the Colorado River in Grand Canyon, Arizona, between 1923 and 2000

    E-print Network

    Changes in the water surface profile of the Colorado River in Grand Canyon, Arizona, between 1923 of the Colorado River through Grand Canyon with theodolite and stadia rod. In 2000, lidar overflights collected throughout Grand Canyon. In addition, comparison of the two water surface profiles showed enhanced pool

  4. Imaging the changing shoreface along South Carolina's Grand Strand

    NASA Astrophysics Data System (ADS)

    Hill, J. C.; Gayes, P. T.; McCoy, C.; Viso, R.

    2008-12-01

    The Grand Strand coastal region of South Carolina is located along Long Bay, a sediment starved embayment with few tidal inlets or fluvial sources of sediment input. The area has been the focus of ongoing coastal erosion, shoreface monitoring and geophysical/geologic framework investigations for more than a decade. We have taken a nested approach to studying shoreface morphology, looking across a range of timescales and spatial resolutions, focusing both onshore and off. Our research combines RTK-GPS beach surveys, ground-based LIDAR, beach cameras and aerial photography of the coastline, along with Chirp subbottom profiles, interferometric/multibeam bathymetry, and sidescan sonar surveys across the innershelf. Focusing on the central portion of the Grand Strand, several trends are apparent in observations across a range of time scales. In recent months, storm events and beach renourishment have influenced sediment patterns on the shoreface and innershelf. Evidence from beach profiles, shoreline surveys and sidescan sonar in the months following renourishment suggest a shift in sediment from the upper to lower shoreface and out onto the inner shelf. Pre and post surveys around Tropical Storm Hanna (September 2008) also appear to show a flux of sediment to the inner shelf. In contrast, past storm events appear to have directed sediment onshore and in many cases, the shelf appears to be the primary source of sediment to the region. Over longer time scales, we have observed seasonal variations in the geometry of the shoreface and a correlation between geologic framework and sediment distribution. Subparallel ledges along the innershelf appear to be funneling sediment offshore. Sidescan sonar and Chirp subbottom profiles suggest preservation of meandering tidal paleochannels along the innershelf that may be an important source of sediment to the region. Beach profiles over the past decade suggest a trend of lower shoreface retreat in areas with sediment cover offshore, while the shoreface may be accreting in areas flanked by nearshore hardbottom. Repeat multibeam bathymetry surveys this fall will allow us to more accurately determine the morphology of the shoreface and innershelf, examine coastal morphodynamics and assess the volume of mobile sediment.

  5. Populating a Control Point Database: A cooperative effort between the USGS, Grand Canyon Monitoring and Research Center and the Grand Canyon Youth Organization

    NASA Astrophysics Data System (ADS)

    Brown, K. M.; Fritzinger, C.; Wharton, E.

    2004-12-01

    The Grand Canyon Monitoring and Research Center measures the effects of Glen Canyon Dam operations on the resources along the Colorado River from Glen Canyon Dam to Lake Mead in support of the Grand Canyon Adaptive Management Program. Control points are integral for geo-referencing the myriad of data collected in the Grand Canyon including aerial photography, topographic and bathymetric data used for classification and change-detection analysis of physical, biologic and cultural resources. The survey department has compiled a list of 870 control points installed by various organizations needing to establish a consistent reference for data collected at field sites along the 240 mile stretch of Colorado River in the Grand Canyon. This list is the foundation for the Control Point Database established primarily for researchers, to locate control points and independently geo-reference collected field data. The database has the potential to be a valuable mapping tool for assisting researchers to easily locate a control point and reduce the occurrance of unknowingly installing new control points within close proximity of an existing control point. The database is missing photographs and accurate site description information. Current site descriptions do not accurately define the location of the point but refer to the project that used the point, or some other interesting fact associated with the point. The Grand Canyon Monitoring and Research Center (GCMRC) resolved this problem by turning the data collection effort into an educational exercise for the participants of the Grand Canyon Youth organization. Grand Canyon Youth is a non-profit organization providing experiential education for middle and high school aged youth. GCMRC and the Grand Canyon Youth formed a partnership where GCMRC provided the logistical support, equipment, and training to conduct the field work, and the Grand Canyon Youth provided the time and personnel to complete the field work. Two data collection efforts were conducted during the 2004 summer allowing 40 youth the opportunity to contribute valuable information to the Control Point Database. This information included: verification of point existence, photographs, accurate site descriptions concisely describing the location of the point, how to reach the point, the specific point location and detailed bearings to visible and obvious land marks. The youth learned to locate themselves and find the points using 1:1000 airphotos, write detailed site descriptions, take bearings with a compass, measure vertical and horizontal distances, and use a digital camera. The youth found information for 252 control points (29% of the total points).

  6. Lepton Number Violation in Supersymmetric Grand Unified Theories

    E-print Network

    J. L. Chkareuli; C. D. Froggatt

    2000-04-10

    We argue that the nature of the global conservation laws in Supersymmetric Grand Unified Theories is determined by the basic vacuum configuration in the model rather than its Lagrangian. It is shown that the suppression of baryon number violation in a general (R-parity violating) superpotential can naturally appear in some extended SU(N) SUSY GUTs which, among other degenerate symmetry-breaking vacua, have a missing VEV vacuum configuration giving a solution to the doublet-triplet splitting problem. We construct SU(7) and SU(8) GUTs where the effective lepton number violating couplings immediately evolve, while the baryon number non-conserving ones are safely projected out as the GUT symmetry breaks down to that of the MSSM. However at the next stage, when SUSY breaks, the radiative corrections shift the missing VEV components to some nonzero values of order M_{SUSY}, thereby inducing the ordinary Higgs doublet mass, on the one hand, and tiny baryon number violation, on the other. So, a missing VEV solution to the gauge hierarchy problem leads at the same time to a similar hierarchy of baryon vs lepton number violation.

  7. Dark matter as the signal of grand unification

    SciTech Connect

    Kadastik, Mario; Kannike, Kristjan; Raidal, Martti [National Institute of Chemical Physics and Biophysics, Ravala 10, Tallinn 10143 (Estonia)

    2009-10-15

    We argue that the existence of dark matter (DM) is a possible consequence of grand unification (GUT) symmetry breaking. In GUTs like SO(10), discrete Z{sub 2} matter parity (-1){sup 3(B-L)} survives despite broken B-L, and group theory uniquely determines that the only possible Z{sub 2}-odd matter multiplets belong to representation 16. We construct the minimal nonsupersymmetric SO(10) model containing one scalar 16 for DM and study its predictions below M{sub G}. We find that electroweak symmetry breaking occurs radiatively due to DM couplings to the standard model Higgs boson. For thermal relic DM the mass range M{sub DM}{approx}O(0.1-1) TeV is predicted by model perturbativity up to M{sub G}. For M{sub DM}{approx}O(1) TeV to explain the observed cosmic ray anomalies with DM decays, there exists a lower bound on the spin-independent direct detection cross section within the reach of planned experiments.

  8. Bajc-Melfo vacua enable Yukawon ultraminimal grand unified theories

    NASA Astrophysics Data System (ADS)

    Aulakh, Charanjit S.

    2015-03-01

    Bajc-Melfo (BM ) two-field (S ,? ) superpotentials define metastable F-term supersymmetry-breaking vacua suitable as hidden sectors for calculable and realistic family and grand unification models. The undetermined vacuum expectation value (VEV) ?Ss? of the Polonyi field that breaks supersymmetry can be fixed either by coupling to N =1 supergravity or by radiative corrections. BM hidden sectors extend to symmetric multiplets (S ,? )ab of a gauged O (Ng) family symmetry, broken at the GUT scale, so that the O (Ng) charged component VEVs ?S^ a b? are also undetermined before accounting for the O (Ng) D-terms, which fix them by cancellation against D-term contributions from the visible sector. This facilitates Yukawon ultraminimal GUTs (YUMGUTs) proposed in [C. S. Aulakh and C. K. Khosa, Phys. Rev. D 90, 045008 (2014)] by relieving the visible sector from the need to give null D-terms for the family symmetry O (Ng). We analyze symmetry breaking and spectra of the hidden-sector fields in the supergravity resolved case when Ng=1 ,2 ,3 . Besides the Polonyi field Ss, most of the superfields S^a b remain light, with fermions getting masses only from loop corrections. Such modes may yield novel dark matter lighter than 100 GeV. Possible Polonyi and moduli problems associated with the fields Sa b call for detailed investigation of loop effects due to the Yukawa and gauge interactions in the hidden sector and of postinflationary field relaxation dynamics.

  9. Grand Army of the Republic Civil War Portraits

    NSDL National Science Digital Library

    Shortly after the conclusion of the Civil War, Union veterans formed the Grand Army of the Republic, or the G.A.R. Through the Reconstruction era and the Gilded Age, the G.A.R. was a powerful organization that lobbied the federal government for federal and state Soldiers Homes for invalids, advocated for the creation of Memorial Day, and also provided support for soldier reunions. This digital collection created by the University of Washington Libraries peers into the faces of some of these veterans by offering up this photograph album originally created by the Stevens Post #1 of the G.A.R., based in Seattle. The album contains over 100 portraits, and visitors can browse through them at their leisure. Visitors can zoom in and out on each photograph and they can also use a number of other tools to get the best view of each photograph for their own purposes. Also, while many of the photographs have complete provenance information, some do not, and visitors are welcome to write in with any insights they might have.

  10. Addressing Physics Grand Challenges Using the Jefferson Lab FEL

    NASA Astrophysics Data System (ADS)

    Williams, Gwyn P.

    2006-11-01

    The Jefferson Lab Free Electron Laser[1] is the first of the so-called 4^th generation light sources to go operational. Capable of delivering extraordinarily bright, tunable light in ultrafast pulses from THz[2] through infrared to UV, the facility extends the experimental reach of accelerator-based light-sources by many orders of magnitude. This allows new opportunities to study many of the ``Grand Challenges'' recently defined by the Office of Science, Basic Energy Sciences Division, most of which are concerned with understandings of equilibrium and non-equilibrium behavior of materials in physics, chemistry and biology using precise pump and probe techniques. Specifically, in condensed matter physics, the JLab FEL permits new studies which go beyond earlier studies of reductionist behavior to those which examine emergent behavior. Thus, the understanding of high Tc superconductivity, colossal magneto-resistance, and observations of the breakdown of the Born-Oppenheimer approximation, are examples of collective behavior which is now treated theoretically via the concept of quasiparticles. In this presentation we will describe the dual pathways of light source development and physics challenges, and then show how they are combined in experiments that allow new insights to be developed to understand material function. We will illustrate this with details of the evolution of accelerator-based light sources, and with examples of work performed to date. References: [1] Neil et al. Phys. Rev.Letts 84, 662 (2000). [2] Carr, Martin, McKinney, Neil, Jordan & Williams, Nature 420, 153 (2002).

  11. Grand minima of solar activity and sociodynamics of culture

    NASA Astrophysics Data System (ADS)

    Vladimirsky, B. M.

    2012-12-01

    Indices of creative productivity introduced by C. Murrey were used to verify S. Ertel's conclusion about a global increase in creative productivity during the prolonged minimum of solar activity in 1640-1710. It was found that these indices for mathematicians, philosophers, and scientists increase in the Maunder era by factor of 1.6 in comparison with intervals of the same length before and after the minimum. A similar effect was obtained for mathematicians and philosophers for five earlier equitype minima in total (an increase by a factor of 1.9). The regularity that is revealed is confirmed by the fact that the most important achievements of high-ranking mathematicians and philosophers during the whole time period (2300 years) considered in this study fall on epochs of reduced levels of solar activity. The rise in the probability of the generation of rational ideas during grand minima is reflected also in the fact that they precede the appearance of written language and farming. Ultra-low-frequency electromagnetic fields appear to serve as a physical agent stimulating the activity of the brain's left hemisphere during the epochs of minima.

  12. Grand canonical steady-state simulation of nucleation.

    PubMed

    Horsch, Martin; Vrabec, Jadran

    2009-11-14

    Grand canonical molecular dynamics (GCMD) is applied to the nucleation process in a metastable phase near the spinodal, where nucleation occurs almost instantaneously and is limited to a very short time interval. With a variant of Maxwell's demon, proposed by McDonald [Am. J. Phys. 31, 31 (1963)], all nuclei exceeding a specified size are removed. In such a steady-state simulation, the nucleation process is sampled over an arbitrary time span and all properties of the metastable state, including the nucleation rate, can be obtained with an increased precision. As an example, a series of GCMD simulations with McDonald's demon is carried out for homogeneous vapor to liquid nucleation of the truncated-shifted Lennard-Jones (tsLJ) fluid, covering the entire relevant temperature range. The results are in agreement with direct nonequilibrium MD simulation in the canonical ensemble. It is confirmed for supersaturated vapors of the tsLJ fluid that the classical nucleation theory underpredicts the nucleation rate by two orders of magnitude. PMID:19916595

  13. Touch and temporal behavior of grand piano actions

    NASA Astrophysics Data System (ADS)

    Goebl, Werner; Bresin, Roberto; Galembo, Alexander

    2005-08-01

    This study investigated the temporal behavior of grand piano actions from different manufacturers under different touch conditions and dynamic levels. An experimental setup consisting of accelerometers and a calibrated microphone was used to capture key and hammer movements, as well as the sound signal. Five selected keys were played by pianists with two types of touch (``pressed touch'' versus ``struck touch'') over the entire dynamic range. Discrete measurements were extracted from the accelerometer data for each of the over 2300 recorded tones (e.g., finger-key, hammer-string, and key bottom contact times, maximum hammer velocity). Travel times of the hammer (from finger-key to hammer-string) as a function of maximum hammer velocity varied clearly between the two types of touch, but only slightly between pianos. A travel time approximation used in earlier work [Goebl W., (2001). J. Acoust. Soc. Am. 110, 563-572] derived from a computer-controlled piano was verified. Constant temporal behavior over type of touch and low compression properties of the parts of the action (reflected in key bottom contact times) were hypothesized to be indicators for instrumental quality.

  14. Lunar and Terrestrial Planet Formation in the Grand Tack Scenario

    E-print Network

    Jacobson, Seth A

    2014-01-01

    We present conclusions from a large number of N-body simulations of the giant impact phase of terrestrial planet formation. We focus on new results obtained from the recently proposed Grand Tack model, which couples the gas-driven migration of giant planets to the accretion of the terrestrial planets. The giant impact phase follows the oligarchic growth phase, which builds a bi-modal mass distribution within the disc of embryos and planetesimals. By varying the ratio of the total mass in the embryo population to the total mass in the planetesimal population and the mass of the individual embryos, we explore how different disc conditions control the final planets. The total mass ratio of embryos to planetesimals controls the timing of the last giant (Moon forming) impact and its violence. The initial embryo mass sets the size of the lunar impactor and the growth rate of Mars. After comparing our simulated outcomes with the actual orbits of the terrestrial planets (angular momentum deficit, mass concentration) ...

  15. Grand challenge problems in environmental modeling and remediation: Groundwater contaminant transport. Final project report 1998

    SciTech Connect

    NONE

    1998-04-01

    The over-reaching goal of the Groundwater Grand Challenge component of the Partnership in Computational Science (PICS) was to develop and establish the massively parallel approach for the description of groundwater flow and transport and to address the problem of uncertainties in the data and its interpretation. This necessitated the development of innovative algorithms and the implementation of massively parallel computational tools to provide a suite of simulators for groundwater flow and transport in heterogeneous media. This report summarizes the activities and deliverables of the Groundwater Grand Challenge project funded through the High Performance Computing grand challenge program of the Department of Energy from 1995 through 1997.

  16. The ending of an era: After more than 10 years, the Rio Grande Basin Initiative concludes

    E-print Network

    Kalisek, Danielle

    2013-01-01

    Story by Danielle Kalisek 8 tx H2O Summer 2013 The Rio Grande near the river diversion point for the Delta Lake Irrigation District office in Edcouch, Texas. Photo by Danielle Kalisek. THE ENDING OF AN ERA After more than #31;#30; years..., the Rio Grande Basin Initiative concludes Summer 2013 tx H2O 9 Scientists with the Rio Grande Basin Initiative used aquatic weed control methods and herbicides to control invasive water plants such as water hyacinth, pictured. Photo by Danielle...

  17. The systemic and ideological sources of grand strategic doctrine : American foreign policy in the twentieth century

    E-print Network

    Green, Brendan Rittenhouse

    2011-01-01

    What explains the puzzling variation in America's foreign policy posture? This study proposes and tests a theory of American grand strategy that places an emphasis on two key variables: the ideological content of American ...

  18. Zooarchaeological analysis of prehistoric vertebrate exploitation at the Grand Bay Site, Carriacou, West Indies

    NASA Astrophysics Data System (ADS)

    Lefebvre, M. J.

    2007-12-01

    This paper discusses zooarchaeological analysis of vertebrate faunal specimens from Grand Bay, a Ceramic Age (ca. ad 400-1300) site on the island of Carriacou in the Grenadines, West Indies. Using faunal data to assess subsistence patterns of vertebrate exploitation during late site occupation, we can begin to better understand Grand Bay procurement strategies and coral reef exploitation. Preliminary zooarchaeological results imply that Grand Bay vertebrate exploitation emphasized marine resources over terrestrial resources, with particular emphasis on coral reef habitats and fish. The faunal data are discussed in relation to common patterns of prehistoric vertebrate exploitation in the Caribbean and fishing strategies. The Grand Bay faunal sample also provides a foundation from which to formulate future research foci and question zooarchaeological approaches to understanding prehistoric coral reef exploitation in the Caribbean.

  19. The SO2 Allowance Trading System: The Ironic History of a Grand Policy Experiment

    E-print Network

    Schmalensee, Richard

    Two decades have passed Two decades have passed since the Clean Air Act Amendments of 1990 launched a grand experiment in market-based environmental policy: the SO2 cap-and-trade system. That system performed well but ...

  20. Monitoring Fine Sediment; Grande Ronde and John Day Rivers, 1999 Annual Report.

    SciTech Connect

    Rhodes, Jonathan J.; Greene, M. Jonas; Purser, Michael D. (Columbia River Inter-Tribal Fish Commission, Portland, OR)

    2000-01-01

    This project was initiated to monitor surface fine sediment levels and overwinter intrusion of fine sediment in spring chinook salmon spawning habitat in the North Folk John Day and Grande Ronde Rivers, for five years.

  1. Workshop on The Rio Grande Rift: Crustal Modeling and Applications of Remote Sensing

    NASA Technical Reports Server (NTRS)

    Blanchard, D. P. (editor)

    1980-01-01

    The elements of a program that could address significant earth science problems by combining remote sensing and traditional geological, geophysical, and geochemical approaches were addressed. Specific areas and tasks related to the Rio Grande Rift are discussed.

  2. 40 CFR 81.83 - Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region. 81.83 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.83...

  3. 40 CFR 81.83 - Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region. 81.83 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.83...

  4. A simulation model of Rio Grande wild turkey dynamics in the Edwards Plateau of Texas

    E-print Network

    Schwertner, Thomas Wayne

    2006-08-16

    I investigated the effect of precipitation and predator abundance on Rio Grande wild turkey (Meleagris gallopavo; RGWT) in Texas. My results suggested that RGWT production was strongly correlated with cumulative winter precipitation over the range...

  5. Stanford University School of Medicine Department of Psychiatry and Behavioral Sciences Psychiatry Grand Rounds

    E-print Network

    Kay, Mark A.

    Stanford University School of Medicine Department of Psychiatry and Behavioral Sciences Psychiatry Grand Rounds "X&Y: A genetic basis for understanding sex differences in childhood psychiatric disorders" David Hong, MD Instructor Department of Psychiatry & Behavioral Sciences Stanford University School

  6. 77 FR 22569 - Interconnection of the Grande Prairie Wind Farm, Holt County, NE

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-16

    ...ENERGY Western Area Power Administration Interconnection...the Grande Prairie Wind Farm, Holt County...interconnect their proposed wind energy generation project to Western's power transmission system...to carry generated power from each wind turbine...

  7. Proceedings of Financial Cryptography '2001 (1922 february 2001, Grand Cayman Island, British West Indies)

    E-print Network

    Pointcheval, David

    Proceedings of Financial Cryptography '2001 (19­22 february 2001, Grand Cayman Island, British West Indies) P. Syverson Ed., Springer-Verlag, LNCS 2339, pages 319­338. The Power of RSA Inversion Oracles

  8. Proceedings of Financial Cryptography '2001 (1922 february 2001, Grand Cayman Island, British West Indies)

    E-print Network

    Pointcheval, David

    Proceedings of Financial Cryptography '2001 (19­22 february 2001, Grand Cayman Island, British West Indies) P. Syverson Ed., Springer-Verlag, LNCS 2339, pages 305­318. Monotone Signatures David Naccache1

  9. International cooperation between the United States and Mexico: addressing water quality of the Lower Rio Grande

    E-print Network

    Crouch, Kellie Gene

    1997-01-01

    Water quantities of the Lower Rio Grande were apportioned between Mexico and Texas through a treaty in 1944. The treaty defines the mandate of the International Boundary and Water Commission, an international institution composed of sections...

  10. SEASONAL VARIATION IN THE BIOGEOCHEMICAL CYCLING OF SESTON IN GRAND TRAVERSE BAY, LAKE MICHIGAN. (R825151)

    EPA Science Inventory

    This study describes the biogeochemical cycling of seston in Grand Traverse Bay, Lake Michigan. Seston was characterized by carbon and nitrogen elemental and isotopic abundances. Fluorescence, temperature, light transmittance, and concentrations of dissolved inorganic nitrogen we...

  11. 33 CFR 100.717 - Annual Fort Myers Beach Offshore Grand Prix; Fort Myers, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

  12. 33 CFR 100.717 - Annual Fort Myers Beach Offshore Grand Prix; Fort Myers, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

  13. 33 CFR 100.717 - Annual Fort Myers Beach Offshore Grand Prix; Fort Myers, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

  14. 33 CFR 100.717 - Annual Fort Myers Beach Offshore Grand Prix; Fort Myers, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

  15. 33 CFR 100.717 - Annual Fort Myers Beach Offshore Grand Prix; Fort Myers, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

  16. 75 FR 5634 - Grand Challenges of the 21st Century; Request for Information

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-03

    ...collaborating with each other and the Administration to achieve one or more of these goals, and (4) models for creating an ``architecture of participation'' that allows many individuals and organizations to contribute to these grand challenges. RFI...

  17. Apatite 4He/3He and (U-Th)/He Evidence for an Ancient Grand Canyon

    NASA Astrophysics Data System (ADS)

    Flowers, R. M.; Farley, K. A.

    2012-12-01

    The Grand Canyon is one of the most dramatic features on Earth, yet when and why it was carved have been controversial topics for more than 150 years. Here, we present apatite 4He/3He thermochronometry data from the Grand Canyon basement that tightly constrain the near-surface cooling history associated with canyon incision. 4He/3He spectra for eastern Grand Canyon apatites of differing He date, radiation damage, and U-Th zonation yield a self-consistent cooling history that substantially validates the He diffusion kinetic model applied here. Similar data for the western Grand Canyon provide evidence that it was excavated to within a few hundred meters of modern depths by ~70 million years ago (Ma), in contrast to the conventional model in which the entire canyon was carved since 5 to 6 Ma.

  18. Apatite 4He/3He and (U-Th)/He evidence for an ancient Grand Canyon.

    PubMed

    Flowers, R M; Farley, K A

    2012-12-21

    The Grand Canyon is one of the most dramatic features on Earth, yet when and why it was carved have been controversial topics for more than 150 years. Here, we present apatite (4)He/(3)He thermochronometry data from the Grand Canyon basement that tightly constrain the near-surface cooling history associated with canyon incision. (4)He/(3)He spectra for eastern Grand Canyon apatites of differing He date, radiation damage, and U-Th zonation yield a self-consistent cooling history that substantially validates the He diffusion kinetic model applied here. Similar data for the western Grand Canyon provide evidence that it was excavated to within a few hundred meters of modern depths by ~70 million years ago (Ma), in contrast to the conventional model in which the entire canyon was carved since 5 to 6 Ma. PMID:23196906

  19. 77 FR 14567 - Notice of Grand Staircase-Escalante National Monument Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-12

    [Federal Register Volume 77, Number 48 (Monday, March 12, 2012)] [Notices] [Page 14567...lodging, and meals are the responsibility of the participating public. Rene C. Berkhoudt, Grand Staircase-Escalante National Monument...

  20. 77 FR 55860 - Notice of Grand Staircase-Escalante National Monument Advisory Committee Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-11

    [Federal Register Volume 77, Number 176 (Tuesday, September 11, 2012)] [Notices] [Pages...lodging, and meals are the responsibility of the participating public. Rene C. Berkhoudt, Grand Staircase-Escalante National Monument...