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Sample records for grandes bagres siluriformes

  1. A new species of Pareiorhaphis (Siluriformes: Loricariidae) from the headwaters of the Arroio Garapiá, coastal drainage of Rio Grande do Sul state, Brazil.

    PubMed

    Pereira, Edson H L; Lehmann, Pablo A; Schvambach, Lucas J; Reis, Roberto E

    2015-01-01

    Pareiorhaphis garapia, new species, is described based on specimens collected in the headwaters of the Arroio Garapiá, Rio Maquiné basin, a coastal drainage of Rio Grande do Sul State, southern Brazil. The new species is distinguished from all other Pareiorhaphis species in having the nuchal plate covered by thick skin, the exposed posterior process of the cleithrum comparatively narrow, and the last segment of the preopercular ramus of the latero-sensory canal reduced to an ossified tubule. The absence of a dorsal-fin spinelet, the reduced number of plates in the dorsal and mid-dorsal series of lateral plates, and morphometric traits also distinguish the new species from its congeners. The restricted geographic distribution of P. garapia, endemic to a headwater stream of the Rio Maquiné basin, and the syntopic occurrence of P. nudulus are discussed. PMID:26624457

  2. A preliminary inventory of the catfishes of the lower Rio Nhamundá, Brazil (Ostariophysi, Siluriformes)

    PubMed Central

    Duarte Ribeiro, Emanuell; Nogueira Machado, Valéria; Hrbek, Tomas; Farias, Izeni Pires

    2015-01-01

    Abstract The Rio Nhamundá is a poorly-known clearwater river draining the southern Guiana Shield of Brazil. In this study we report the findings of a preliminary ichthyological survey, focusing on catfishes (Siluriformes). We identify a total of 36 species (31 genera, seven families) from the Nhamundá, including 11 species already recorded from the river. Overall, our survey results show that even rapid surveys can provide important information on Amazon fish biodiversity, suggesting potential new species, providing range extensions for nominal species, and additionally highlighting taxa in need of taxonomic revision and genetic study. As well as the traditional forms of data collected on biodiversity surveys (i.e. preserved specimen vouchers), our study also provides "new" types of data in the form of DNA barcodes and images of fishes exhibiting colouration in life, information that will be invaluable in future work addressing difficult groups. O Rio Nhamundá é um rio de água clara, pouco conhecido, que drena parte do Escudo das Guianas em território brasileiro. Nesse estudo, nós reportamos os resultados de um levantamento ictiofaunístico preliminar dessa área, tendo como foco os bagres (Siluriformes). Nós identificamos um total de 36 espécies (31 gêneros, sete famílias) provenientes de nossa coleta, e adicionamos 11 espécies já conhecidas para o rio. De maneira geral, os resultados de nossa pesquisa mostram que mesmo levantamentos rápidos podem gerar informações importantes sobre a biodiversidade de peixes amazônicos, sugerindo potenciais espécies novas, ampliando a área de distribuição de espécies, além de apontar a necessidade de revisões taxonômicas e estudos genéticos para alguns taxa. Para além das formas tradicionais de dados coletados em pesquisas de biodiversidade (i.e. espécimes preservados), nosso estudo fornece "novas" formas de dados, como DNA barcodes e imagens com o padrão de coloração dos espécimes vivos, informações essas que serão de valor inestimável para futuros estudos que abordem grupos taxonômicos difíceis. PMID:25977611

  3. A preliminary inventory of the catfishes of the lower Rio Nhamundá, Brazil (Ostariophysi, Siluriformes).

    PubMed

    Collins, Rupert A; Duarte Ribeiro, Emanuell; Nogueira Machado, Valéria; Hrbek, Tomas; Farias, Izeni Pires

    2015-01-01

    The Rio Nhamundá is a poorly-known clearwater river draining the southern Guiana Shield of Brazil. In this study we report the findings of a preliminary ichthyological survey, focusing on catfishes (Siluriformes). We identify a total of 36 species (31 genera, seven families) from the Nhamundá, including 11 species already recorded from the river. Overall, our survey results show that even rapid surveys can provide important information on Amazon fish biodiversity, suggesting potential new species, providing range extensions for nominal species, and additionally highlighting taxa in need of taxonomic revision and genetic study. As well as the traditional forms of data collected on biodiversity surveys (i.e. preserved specimen vouchers), our study also provides "new" types of data in the form of DNA barcodes and images of fishes exhibiting colouration in life, information that will be invaluable in future work addressing difficult groups. O Rio Nhamundá é um rio de água clara, pouco conhecido, que drena parte do Escudo das Guianas em território brasileiro. Nesse estudo, nós reportamos os resultados de um levantamento ictiofaunístico preliminar dessa área, tendo como foco os bagres (Siluriformes). Nós identificamos um total de 36 espécies (31 gêneros, sete famílias) provenientes de nossa coleta, e adicionamos 11 espécies já conhecidas para o rio. De maneira geral, os resultados de nossa pesquisa mostram que mesmo levantamentos rápidos podem gerar informações importantes sobre a biodiversidade de peixes amazônicos, sugerindo potenciais espécies novas, ampliando a área de distribuição de espécies, além de apontar a necessidade de revisões taxonômicas e estudos genéticos para alguns taxa. Para além das formas tradicionais de dados coletados em pesquisas de biodiversidade (i.e. espécimes preservados), nosso estudo fornece "novas" formas de dados, como DNA barcodes e imagens com o padrão de coloração dos espécimes vivos, informações essas que serão de valor inestimável para futuros estudos que abordem grupos taxonômicos difíceis. PMID:25977611

  4. Grand Canyon

    Atmospheric Science Data Center

    2014-05-15

    article title:  The Grand Canyon     View Larger Image Northern Arizona and the Grand Canyon are captured in this pair of Multi-angle Imaging SpectroRadiometer ... formats available at JPL December 31, 2000 - Grand Canyon and Lake Powell. project:  MISR ...

  5. 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

  6. The complete mitochondrial genome of Glyptothorax sinense (Siluriformes, Sisoridae).

    PubMed

    Yan, Shu-Xiang; Xiong, Mei-Hua; Que, Yan-Fu; Tang, Hui-Yuan; Zhu, Bin; Shao, Ke

    2016-03-01

    Glyptothorax sinense (Siluriformes, Sisoridae), is a kind of small-sized freshwater fish which mainly distributes in the middle and upper reaches of the Yangtze River in China. In this study, the complete mitochondrial genome of G. sinense was first determined using a PCR-based method. The complete mtDNA sequence is 16,531?bp in length, including 22 transfer RNA genes, 2 ribosomal RNA genes, 13 protein-coding genes, and a non-coding control region (D-loop). The overall-based composition was 31.61% A, 26.66% T, 15.38% G and 26.34% C, with a relatively high A?+?T content (58.27%). This will provide a useful tool for evolutionary and population genetic studies of G. sinense. PMID:24865921

  7. The complete mitochondrial genome of Pseudobagrus emarginatus (Siluriformes: Bagridae).

    PubMed

    Shao, Ke; Yan, Shu-Xiang; Zhu, Bin; Xiong, Mei-Hua; Tian, Hua; Liao, Xiao-Lin

    2016-01-01

    In this study, the total mitochondrial genome sequence of Pseudobagrus emarginatus (Siluriformes: Bagridae) was firstly sequenced and determined. The complete mtDNA genome sequence of P. emarginatus is 16,534?bp in length. It consists of 22 transfer RNA genes, 2 ribosomal RNA genes, 13 protein-coding genes, and a non-coding control region (D-loop). The overall-based composition was 31.5% A, 26.8% T, 14.9% G and 26.8% C, with a high A+T content (58.3%), which was nearly the same as other reported catfishes. These results will provide useful data to the natural resources conservation and systematics analysis of P. emarginatus and its related species in future. PMID:24725015

  8. Complete mitochondrial DNA genome of Pseudobagrus medianalis (Siluriformes: Bagridae).

    PubMed

    Liang, Hong-Wei; Li, Zhong; Zou, Gui-Wei; Shi, Ming-Yan

    2016-01-01

    The complete mitochondrial genome was sequenced from the freshwater fish, Pseudobagrus medianalis (Siluriformes: Bagridae) in this study. The genome sequence was 16,647?bp in length, and the gene order and contents were identical with the bagridae fishes. The mitochondrial genome contains 13 protein-coding genes, 2 ribosomal RNAs, 22 transfer RNAs and 2 non-coding regions (control region and origin of light-strand replication). All genes were encoded on the heavy strain except for ND6 and eight tRNA genes. The overall base composition is 25.7% A, 30.9% T, 28.0% G, 15.4% C, with an A+T bias of 56.6%. The complete mitogenome data provides useful genetic markers for the studies on the molecular identification, population genetics, phylogenetic analysis and conservation genetics. PMID:24724973

  9. The complete mitochondrial genome sequence of Hemibagrus sp. (Siluriformes: Bagridae).

    PubMed

    Hao, Rong-Chao; Wang, Guo-Hua

    2014-10-16

    Abstract At present, the phylogenetic and taxonomic positions of Bagridae and Siluriformes have long been unclear. In this paper, we sequenced and annotated the complete mitogenome of Hemibagrus sp. The total length was 16,529 bp, and was typically consist of 37 genes, including 13 protein-coding genes, 2 rRNAs, 22 tRNA, a light-strand replication origin (OL) and a single large control region (CR). Except for eight tRNA and ND6 genes, all other mitochondrial genes were encoded on the heavy strand (H-strand). The gene content, organization and arrangement were identical to that of a typical bony fish. The overall base composition was 26.5%, 26.8%, 31.7% and 15.0% for T, C, A and G, respectively, with a slight bias on AT content (58.2%). This information could not only contribute to provide useful molecular data for the species identification, but also to further taxonomic and phylogenetic studies of Hemibagrus and Bagridae. PMID:25319292

  10. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: V. Five new species of Thaparocleidus Jain, 1952 (Ancylodiscoididae) from Pangasius Nasutus.

    PubMed

    Pariselle, A; Lim, L H; Lambert, A

    2003-12-01

    The examination of gill parasites from Pangasius nasutus (Bleeker, 1862) (Siluriformes, Pangasiidae) revealed the presence of five new species of Monogenea, all belonging to Thaparocleidus Jain, 1952 (Monogenea, Ancylodiscoididae) as defined by Lim (1996) and Lim et al. (2001): T. serpens n. sp. T. ocrea n. sp., T. megagripus n. sp., T. citreum n. sp. and T. alatus n. sp. PMID:14710628

  11. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: IX. Two new species of Thaparocleidus Jain, 1952 (Ancylodiscoididae) from Pangasius mahakamensis.

    PubMed

    Pariselle, A; Lim, L H S; Lambert, A

    2005-12-01

    The examination of gill parasites from P. mahakamensis Pouyaud, Gustiano & Teugels, 2002 (Siluriformes, Pangasiidae) in Southeast Asia revealed the presence of three species of Monogenea. One (Thaparocleidus caecus (Mizelle & Kritsky, 1969)) had been previously described. The other two, belonging to Thaparocleidus Jain, 1952 (Monogenea, Ancylodiscoididae) as defined by Lim (1996) and Lim et al. (2001), are considered new species: T. pouyaudi n. sp. and T. teugelsi n. sp. PMID:16402564

  12. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: VI. Pangasitrema camillae n. g., n. sp. (Monogenea, Ancylodiscoididae), from Pangasius polyuranodon.

    PubMed

    Pariselle, A; Euzet, L; Lambert, A

    2004-06-01

    The examination of gill parasites from Pangasius polyuranodon Bleeker, 1852 (Siluriformes, Pangasiidae) in Indonesia revealed the presence of a new species of Manogenea, belonging to a new genus: Pangasitrema camillae n. g., n. sp. (Ancylodiscoididae). Among Ancylodiscoididae, the genus has several distinguishing features: the reduced size of the haptor, the morphology and size of gripi, the absence of a ventral transversal bar and of a cuneus associated with dorsal gripi. PMID:15224575

  13. The complete mitochondrial genome of the spotted longbarbel catfish, Hemibagrus guttatus (Siluriformes, Bagridae).

    PubMed

    Tian, Hua; Que, Yanfu; Zhao, Na; Chen, Feng; Zhu, Bin; Huang, Daoming; Chang, Jianbo; Liao, Xiaolin

    2016-01-01

    Spotted longbarbel catfish, Hemibagrus guttatus (Siluriformes, Bagridae), is regarded as one of the "four famous fish" in the Pearl River system in China. So far, very few genomic resources from this species were available. In the present study, the complete mitochondrial genome of H. guttatus was determined to be 16,528?bp long circular molecule with a typical gene arrangement of vertebrate mitochondrial DNA. It includes 22 transfer RNA genes, 2 ribosomal RNA genes, 13 protein-coding genes, and a non-coding control region (D-loop). The complete mtDNA genome sequence obtained in this study would be useful for studying genetic diversity and phylogenetics in H. guttatus and related taxa in future. PMID:24660927

  14. Neotropical Siluriformes as a Model for Insights on Determining Biodiversity of Animal Groups

    PubMed Central

    Ota, Renata Rúbia; Message, Hugo José; da Graça, Weferson Júnio; Pavanelli, Carla Simone

    2015-01-01

    We performed an analysis of the descriptions of new species of Neotropical Siluriformes (catfishes) to estimate the number of new species that remain to be described for a complete knowledge on biodiversity of this order, to verify the effectiveness of taxonomic support, and to identify trends and present relevant information for future policies. We conducted a literature review of species descriptions between January 1990 and August 2014. The following metadata were recorded from each article: year of publication, number of species, journal and impact factor, family(s) of the described species, number of authors, age of the authors and coauthors, country of the first author’s institution and ecoregion of the type-locality. From accumulation of descriptions, we built an estimate model for number of species remaining to be described. We found 595 described species in 402 articles. The data demonstrated that there has been an increased understanding of the diversity of Siluriformes over the last 25 years in the Neotropical region, although 35% of the species still remain to be described. The model estimated that with the current trends and incentives, the biodiversity will be known in almost seven decades. We have reinforced the idea that greater joint efforts should be made by society and the scientific community to obtain this knowledge in a shorter period of time through enhanced programs for promoting science, training and the advancement of professionals before undiscovered species become extinct. The model built in this study can be used for similar estimates of other groups of animals. PMID:26168270

  15. Image grand tour

    NASA Astrophysics Data System (ADS)

    Wegman, Edward J.; Poston, Wendy L.; Solka, Jeffrey L.

    1998-09-01

    The image grand tour is a method for visualizing multispectral or multiple registered images. In many settings, several registered images of the same scene are collected. This most often happens when multispectral images are collected, but may happen in other settings as well. A multispectral image can be viewed as an image in which each pixel has a multivariate vector attached. The desired goal is to combine the multivariate vector into a single value which may be rendered in gray scale as an image. One way of exploring multivariate data has been by means of the grand tour. The grand tour in a conventional sense is a continuous space-filling path through the set of two-dimensional planes. Data is then projected into the two-planes. Traditionally the data analyst views the grand tour until an interesting configuration of the data is viewed. In our image grand tour, the grand tour is a continuous space filling path through the set of one-planes, i.e. lines. The idea of the image grand tour is then to project the vector attached to each pixel into the one-dimensional space and render each as a gray-scale value. Thus we obtain a continuously changing gray scale image of the multispectral scene. As with conventional data analysis, we watch the scene until an interesting configuration of the image is seen. In this talk we will discuss some of the theory associated with one-dimensional grand tours. We illustrate this talk with multispectral (six bands) images of minefield, and illustrate how the grand tour can create linear combinations of the multispectral images which specifically highlight mines in a minefield.

  16. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: X. six new species of Thaparocleidus Jain, 1952 (Ancylodiscoididae) from Pangasius micronema.

    PubMed

    Pariselle, A; Lim, L H S; Lambert, A

    2006-12-01

    The examination of gill parasites from Pangasius micronemao Bleeker, 1847 (Siluriformes, Pangasiidae) in Southeast Asia revealed the presence of nine species of Monogenea. Two (Thoparocleidus brevicochleus Pariselle, Lim & Lambert, 2001 and T. sinespinoe Pariselle, Lim & Lambert, 2001) have been previously described. Among the others, six species, belonging to Thaporocleidus Jain, 1952 (Monogenea, Ancylodiscoididae) as defined by Lim (1996) and Lim et al. (2001), are considered new species: T. tacitus n. sp., T. summagracilis n. sp., T. portentosus n. sp., T rukyonii n. sp., T. durandi n. sp., and T. lebrunce n. sp. The remaining species is represented by too few individuals to be conclusively described. PMID:17285848

  17. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: II. Four new species of Thaparocleidus Jain, 1952 (Ancylodiscoidinae) from Pangasius humeralis.

    PubMed

    Pariselle, A; Lim, L H; Lambert, A

    2001-12-01

    The examination of gills from two rare endemic species of Pangasius Valenciennes, 1840 (Siluriformes, Pangasiidae): P. humeralis Roberts, 1989 (five specimens) and P. lithostoma Roberts, 1989 (six specimens) from the Kapuas River (West Kalimantan province, Bomeo Island, Indonesia) revealed the presence of four new species of Monogenea belonging to the genus Thaparocleidus Jain, 1952 (Monogenea, Ancylodiscoidinae) on P. humeralis: T. sinespinae n. sp., T. brevicochleus n. sp., T. kapuasensis n. sp. and T. gustianoi n. sp., and not any on P. lithostoma. PMID:11802268

  18. 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.

  19. 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. PMID:25893072

  20. Grand antiprism and quaternions

    NASA Astrophysics Data System (ADS)

    Koca, Mehmet; Ajmi, Mudhahir Al; Ozdes Koca, Nazife

    2009-12-01

    Vertices of the four-dimensional (4D) semi-regular polytope, the grand antiprism and its symmetry group of order 400 are represented in terms of quaternions with unit norm. It follows from the icosian representation of the E8 root system which decomposes into two copies of the root system of H4. The symmetry of the grand antiprism is a maximal subgroup of the Coxeter group W(H4). It is the group Aut(H2 ⊕ H'2) which is constructed in terms of 20 quaternionic roots of the Coxeter diagram H2 ⊕ H'2. The root system of H4 represented by the binary icosahedral group I of order 120, constitutes the regular 4D polytope 600-cell. When its 20 quaternionic vertices corresponding to the roots of the diagram H2 ⊕ H'2 are removed from the vertices of the 600-cell the remaining 100 quaternions constitute the vertices of the grand antiprism. We give a detailed analysis of the construction of the cells of the grand antiprism in terms of quaternions. The dual polytope of the grand antiprism has also been constructed.

  1. 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

  2. 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...

  3. Democracy and "Grand" Corruption.

    ERIC Educational Resources Information Center

    Rose-Ackerman, Susan

    1996-01-01

    Defines "grand" corruption as that occurring at the higher levels of a political system and involving large sums of money. Discusses the impact and incentives for this level of corruption as well as various government responses. Identifies multinational corporations as the major malefactors. (MJP)

  4. 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...

  5. 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

  6. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: VIII. Four new species of Thaparocleidus Jain, 1952 (Ancylodiscoididae) from Pangasius polyuranodon and P. elongatus.

    PubMed

    Pariselle, A; Lim, L H S; Lambert, A

    2005-03-01

    The examination of gill parasites from Pangasius polyuranodon Bleeker, 1852 and P. elongatus Pouyaud, Gustiano & Teugels, 2002 (Siluriformes, Pangasiidae) in Southeast Asia revealed the presence of four new species of Monogenea all belonging to Thaparocleidus Jain, 1952 (Monogenea, Ancylodiscoididae) as defined by Lim (1996) and Lim et al. (2001): T. furcus n. sp., T. infundibulus n. sp., T. sudartoi n. sp. and T. turbinatio n. sp. PMID:15828578

  7. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: VII. Six new host-specific species of Thaparocleidus Jain, 1952 (Ancylodiscoididae) from Pangasius polyuranodon.

    PubMed

    Pariselle, A; Lim, L H S; Lambert, A

    2004-12-01

    The examination of gill parasites from Pangasius polyuranodon Bleeker, 1852 (Siluriformes, Pangasiidae) revealed the presence of six new host-specific species of Monogenea, all belonging to Thaparocleidus Jain, 1952 (Monogenea, Ancylodiscoididae) as defined by Lim (1996) and Lim et al. (2001): T. caestus n. sp., T. crassipenis n. sp., T. legendrei n. sp., T. levangi n. sp., T. slembroucki n. sp. and T. virgula n. sp. PMID:15638137

  8. Metazoan parasites of Mandi-amarelo Pimelodus maculatus and of Jundiá Rhamdia quelen (Osteichthyes: Siluriformes) of Paraíba do Sul River, Volta Redonda, Rio de Janeiro.

    PubMed

    Venancio, Aline Cristine Pinto; de Aguiar, Gesilene Ribeiro; Lopes, Patrícia da Silva; Alves, Dimitri Ramos

    2010-01-01

    Forty-one specimens of mandi-amarelo Pimelodus maculatus Lacépède, 1803 (Siluriformes: Pimelodidae) and 54 specimens of jundiá Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Heptapteridae) were collected from the Paraíba do Sul River, Volta Redonda, State of Rio de Janeiro, Brazil between November 2007 and October 2008. These fish underwent necropsy so their infracommunities of metazoan parasites could be studied. The same three species of parasites were collected in the two fish species studied. These were one monogenean, one nematode, and one hirudinean. Cucullanus pinnai (Travassos, Artiga, and Pereira, 1928) (Nematoda: Cucullanidae) and Aphanoblastella sp. (Monogenea: Dactylogyridae) were the dominant species with the highest prevalence in P. maculatus and R. quelen. The parasite species of P. maculatus and R. quelen showed an atypical over-dispersed pattern of distribution. No parasite species showed significant correlation between the body total length of the siluriform hosts and their prevalence and abundance. The parasite species richness showed a mean value of 0.87 ± 0.67 (0-2) and 0.57 ± 0.56 (0-2) in P. maculatus and R. quelen, respectively, and no correlation with the body total length. PMID:20943019

  9. Grand Island's good neighbors

    SciTech Connect

    Rabbe, D.L.

    1980-09-01

    Tornado-devasted Grand Island, Nebraska was spared the destruction of a 100 megawatt coal-fired power plant under construction. The town is a charter member of the Nebraska Municipal Power Pool, whose other members responded with help. Over 90 percent of the town was without power and most communications were severed. Power pool members restored vital water and sewer services and provided power for two weeks until lines and pumps were repaired. (DCK)

  10. 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 μm vs. 305-340 μm), 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

  11. Requiem for the grand round.

    PubMed

    Stanyon, Maham; Khan, Shahid Anis

    2015-02-01

    The time-honoured tradition of Grand Round is firmly rooted in medical education, but has little evidence for its effectiveness or its impact on patient management. A mode of didactic teaching, Grand Round has lost its appeal in modern medical education with dwindling attendance at Grand Rounds worldwide. Once a platform for eminence-based medicine and a cross fertilisation of medical ideas, emphasis on sub-specialisation and clinical governance, combined with rota, trainee engagement and attendance failures has made Grand Round obsolete. To survive, Grand Round must have evidence for its effectiveness in medical education. It must be able to compete with other forms of teaching and adapt by using technology to reach trainees. Engaging the audience and encouraging participation needs to be woven into the fabric of the modern Grand Round, alongside learning clinical skills and developing clinical reasoning. Understanding the needs of today's trainees and their involvement in formulating the Grand Round programme is vital. Attendance at Grand Round is a recognised measure of its success and will be used in its evaluation. Questions still remain regarding the future of Grand Round. Its survival will depend upon its ability to change with time and reclaim its place as a credible tool to promote learning. PMID:25650190

  12. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: I. Five new species of Thaparocleidus Jain, 1952 (Ancylodiscoidinae) from Pangasius pangasius, P. kinabatanganensis, P. rheophilus and P. nieuwenhuisii.

    PubMed

    Pariselle, A; Lim, L H; Lambert, A

    2001-06-01

    The examination of gill parasites from Pangasius pangasius (Hamilton, 1822); P. kinabatanganensis Roberts & Vidthayanon, 1991; P. rheophilus Pouyaud & Teugels, 2000 and P. nieuwenhuisii (Popta, 1904) (Siluriformes, Pangasiidae) in Southeast Asia revealed the presence of six species of Thaparocleidus Jain, 1952 (Monogenea, Ancylodiscoidinae). One has been previously described from P. pangasius: T. pangasi (Tripathi, 1957). The other five are new species: T. chandpuri n. sp. from P. pangasius; T. bahari n. sp. and T. sabanensis n. sp. from P. kinabatanganensis; T. redebensis n. sp. from P. rheophilus and T. mahakamensis n. sp. from P. nieuwenhuisii. PMID:11474980

  13. 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

  14. A new genus and species of proteocephalidean tapeworm (Cestoda) from Pangasius larnaudii (Siluriformes: Pangasiidae) in Southeast Asia.

    PubMed

    Scholz, Tomáš; de Chambrier, Alain

    2012-06-01

    A new proteocephalidean cestode is described from spot pangasius, Pangasius larnaudii (Siluriformes: Pangasiidae), from Tonle Sap Lake in Cambodia and a new genus, Pangasiocestus , is proposed to accommodate it. The genus is placed in the Gangesiinae because its scolex possesses a large rostellum-like apical organ and its genital organs (testes, ovary, vitellarium, and uterus) are situated in the medulla, with some vitelline follicles paramuscular. Pangasiocestus romani n. gen. and n. sp., the type and only species of the new genus, is characterized mainly by its rosette-like scolex composed of 4 lobes bearing a small sucker in their center, and the apical part with a large, discoidal, rostellum-like apical organ devoid of hooks, by weakly developed inner longitudinal musculature formed by very few isolated muscle fibers, uneven size of testes in immature and mature proglottids, with lateral testes smaller and more dense than median ones, by very narrow lateral bands of vitelline follicles, formed usually by single follicles, and by the vagina anterior to the cirrus sac. This is the first proteocephalidean cestode from a pangasiid catfish identified to the species level (proteocephalidean cestodes from 3 Pangasius spp. reported in an unpublished account from Vietnam, misidentified as Proteocephalus osculatus (Goeze, 1782) [?=? Glanitaenia osculata ], are not considered). PMID:22257242

  15. Comparative morphology of the gonadal structure related to reproductive strategies in six species of neotropical catfishes (Teleostei: Siluriformes).

    PubMed

    Melo, Rafael Magno Costa; Arantes, Fábio Pereira; Sato, Yoshimi; dos Santos, José Enemir; Rizzo, Elizete; Bazzoli, Nilo

    2011-05-01

    We studied the relationship between the morphology of the reproductive system and the reproductive strategies of six neotropical catfishes using macroscopic and microscopic analyses. The reproductive system of the examined Siluriformes showed diversified characteristics, but permitted their being grouped according to three reproductive strategies: pelagic spawning, demersal spawning, and internally fertilizing. The pelagic spawners Pseudoplatystoma corruscans and Conorhynchos conirostris have testes that are characterized by filiform lobes, absence of testicular secretion, full-grown oocytes of small diameter, thin zona radiata, and cuboidal follicular cells. Pimelodus maculatus is morphologically distinct from the other two pelagic spawners catfishes due to the presence of testicular secretion. The demersal spawners Lophiosilurus alexandri and Rhinelepis aspera possess homogeneous testicular secretion, large mature oocytes, and columnar follicular cells. The most specialized reproductive system was observed in the internally fertilizing Trachelyopterus galeatus, which possesses a seminal vesicle accessory to the testes, spermatozoa with elongated nuclei that form spermatozeugmata, and a secretory ovarian lamellar epithelium that is associated with sperm storage. The reproductive system observed in Neotropical catfishes showed a relationship associated with the type of fertilization and the reproductive strategies of the six species studied. PMID:21246599

  16. Nuclear Proliferation and Grand Challenges

    SciTech Connect

    McCarthy, Kathy

    2009-01-01

    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.

  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. 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.

  19. Isolation and characterization of microsatellite loci in Pimelodus maculatus (Siluriformes: Pimelodidae).

    PubMed

    Paiva, Ana Luiza B; Kalapothakis, Evanguedes

    2008-09-01

    To evaluate genetic variability in Pimelodus maculatus, a small migratory catfish common in South America, we isolated and characterized several microsatellite markers from individuals collected from a population in the River Grande (Brazil). A total of 11 loci were obtained and analyzed. All the loci were polymorphic, with the number of alleles ranging from three to 27 per locus. Observed and expected heterozygosities ranged from 0.5 to 0.89 and from 0.53 to 0.95, respectively. These polymorphic markers can be used as effective tools to study the genetic structure in populations of this species. PMID:21585977

  20. 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)

  1. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: III. Five new species of Thaparocleidus Jain, 1952 (Ancylodiscoididae) from Pangasius bocourti, P. djambal and P. hypophthalmus.

    PubMed

    Pariselle, A; Lim, L H S; Lambert, A

    2002-09-01

    The examination of gill parasites from Pangasius bocourti Sauvage, 1880; P. djambal Bleeker, 1846; P. hypophthalmus (Sauvage, 1878) and P. gigas Chevey, 1930 (Siluriformes, Pangasiidae) revealed the presence of seven species of Monogenea among which five are considered new species. They all belong to Thaparocleidus Jain, 1952 (Ancylodiscoididae) as defined by Lim (1996) and Lim et al. (2001). P. bocourti: T. combesi n. sp., T. komarudini n. sp. and T. vietnamensis n. sp. P. djambal: T. caecus (Mizelle & Kritsky, 1969), T. combesi n. sp., T. euzeti n. sp., T. komarudini n. sp. and T. sadilii n. sp. P. hypophthalmus: T. caecus, T. siamensis (Lim, 1990) and T. vietnamensis n. sp. P. gigas: no Monogenea were found on this host species. PMID:12375363

  2. CCR Grand Rounds and Eminent Lectures

    Cancer.gov

    CCR Grand Rounds NCI’s Center for Cancer Research (CCR) Grand Rounds is a weekly lecture series addressing current research in clinical and molecular oncology. Speakers are leading national and international researchers and clinicians. Fridays, 12:00 noon

  3. Redescription of Parspina argentinensis (Szidat, 1954) (Digenea: Cryptogonimidae) from freshwater fishes (Pimelodidae) in the basins of the Paraná and La Plata Rivers, Argentina, with comments on P. bagre Pearse, 1920.

    PubMed

    Ostrowski de Núñez, Margarita C; Arredondo, Nathalia J; Doma, Irene L; Gil de Pertierra, Alicia A

    2011-01-01

    The type-specimens of Parspina argentinensis (Szidat, 1954) from Pimelodus maculatus Lacépède, and new material from Iheringichthys labrosus (Lütken), Parapimelodus valenciennis (Lütken), Pimelodella gracilis (Valenciennes), Pimelodus albicans (Valenciennes), P. argenteus Perugia and P. maculatus caught in the basins of the La Plata and Paraná Rivers, Argentina, were studied to elucidate its taxonomic status. The type-specimens of Parspina bagre Pearse, 1920 from Pimelodella metae Eigenmann in Lake Valencia, Venezuela, were also studied and new observations on its morphology recorded. The amendation of the generic diagnosis of Parspina Pearse, 1920 is proposed based on the study of both species, which revealed, among other features, the absence of a thin walled-membrane enclosing the male terminal genitalia. Parspina argentinensis is characterised by the following features: absence of a gonotyl; presence of a bipartite seminal vesicle, pars prostatica and ejaculatory duct; caeca of nearly equal length; uterus extending from the level of the ventral sucker to end of body; testes symmetrical to slightly oblique; ovary transversely elongate, compact and variable in shape; and the utilisation of a wide range of freshwater fishes as hosts. The tegumental surface of this species is covered with pectinate spines arranged quincuncially. Spines decrease in size and density from forebody to hindbody. There are two types of sensory papillae, ciliated and dome-shaped. Ciliated papillae are distributed on the surface of the oral region and on the dorsal and ventral surfaces of the body, whereas dome-shaped papillae are found on the surface of the ventral rim of the oral sucker associated with a ciliated papilla. Gland-duct openings are interspersed with the spines of the oral crown. In addition, the infection indices of P. argentinensis vary widely, not only among different hosts but also between the Paraná and La Plata River basins. Higher prevalences of P. argentinensis are recorded in the La Plata River, and Pimelodus albicans, P. maculatus and Iheringichthys labrosus are the principal final hosts in this area. PMID:21161489

  4. Rio Grande Wetbacks: Mexican Migrant Workers.

    ERIC Educational Resources Information Center

    Norquest, Carrol

    Farmers in the Lower Rio Grande Valley of Texas saw a rise of wetback labor in the 1930s and 40s. The wetback laborers were Mexicans who had crossed the Rio Grande and were in the United States illegally to work. Carrol Norquest, a farmer in the Lower Rio Grande Valley, employed wetbacks regularly. In this book, Mr. Norquest writes about the…

  5. Rio Grande Wetbacks: Mexican Migrant Workers.

    ERIC Educational Resources Information Center

    Norquest, Carrol

    Farmers in the Lower Rio Grande Valley of Texas saw a rise of wetback labor in the 1930s and 40s. The wetback laborers were Mexicans who had crossed the Rio Grande and were in the United States illegally to work. Carrol Norquest, a farmer in the Lower Rio Grande Valley, employed wetbacks regularly. In this book, Mr. Norquest writes about the…

  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.; Łuczak, 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 (Nμ) 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 unification and exotic fermions

    NASA Astrophysics Data System (ADS)

    Feger, Robert P.; Kephart, Thomas W.

    2015-08-01

    We exploit the recently developed software package LieART to show that SU (N ) grand unified theories with chiral fermions in mixed tensor irreducible representations can lead to standard model chiral fermions without additional light exotic chiral fermions; i.e., only standard model fermions are light in these models. Results are tabulated which may be of use to model builders in the future. An SU(6) toy model is given and model searches are discussed.

  8. Gauge-Higgs grand unification

    NASA Astrophysics Data System (ADS)

    Hosotani, Yutaka; Yamatsu, Naoki

    2015-11-01

    SO(11) gauge-Higgs grand unification in the Randall-Sundrum warped space is proposed. Orbifold boundary conditions and one brane scalar field reduce SO(11) to the standard model symmetry, which is further broken to SU(3)_C × U(1)_EM by the Hosotani mechanism. In a minimal model, quarks and leptons are contained in a multiplet in 32 of SO(11) in each generation. Proton decay is naturally suppressed by a conserved fermion number.

  9. Introduction to grand unification theories

    SciTech Connect

    Kang, K.

    1980-01-01

    The Georgi-Glashow model is introduced based on the minimal gauge group SU(5) as a prototype grand unification theory of the electroweak and strong interactions. Simple estimation of sin/sup 2/ theta/sub W/ in the symmetry limit and the renormalization corrections at the energy scale of M/sub W/ are given along with other successes of the SU(5) model.

  10. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. 100.906 Section 100.906 Navigation and Navigable Waters COAST GUARD... Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. (a) Regulated Area. All waters of...

  11. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. 100.906 Section 100.906 Navigation and Navigable Waters COAST GUARD... Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. (a) Regulated Area. All waters of...

  12. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. 100.906 Section 100.906 Navigation and Navigable Waters COAST GUARD... Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. (a) Regulated Area. All waters of...

  13. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. 100.906 Section 100.906 Navigation and Navigable Waters COAST GUARD... Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. (a) Regulated Area. All waters of...

  14. 33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. 100.906 Section 100.906 Navigation and Navigable Waters COAST GUARD... Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. (a) Regulated Area. All waters of...

  15. 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

  16. 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.

  17. Grand unification: quo vadis domine

    SciTech Connect

    Senjanovic, G.

    1985-01-01

    The present theoretical and experimental situation with grand unification is summarized. The issues of proton decay and the Weinberg angle are addressed, going through the predictions of both the standard SU(5) theory and its supersymmetric extension. The SO(10) theory, which provides a minimal one family model, is then studied. The gravitational characteristics of domain walls and strings are then discussed. It is argued that there is a need to go beyond SO(10) in order to incorporate a unified picture of families. This leads to the prediction of mirror fermions, whose physics is analyzed. 31 refs. (LEW)

  18. 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

  19. Grand challenges for biological engineering.

    PubMed

    Yoon, Jeong-Yeol; Riley, Mark R

    2009-01-01

    Biological engineering will play a significant role in solving many of the world's problems in medicine, agriculture, and the environment. Recently the U.S. National Academy of Engineering (NAE) released a document "Grand Challenges in Engineering," covering broad realms of human concern from sustainability, health, vulnerability and the joy of living. Biological engineers, having tools and techniques at the interface between living and non-living entities, will play a prominent role in forging a better future. The 2010 Institute of Biological Engineering (IBE) conference in Cambridge, MA, USA will address, in part, the roles of biological engineering in solving the challenges presented by the NAE. This letter presents a brief outline of how biological engineers are working to solve these large scale and integrated problems of our society. PMID:19772647

  20. Google Earth Grand Tour Themes

    NASA Astrophysics Data System (ADS)

    De Paor, D. G.; Whitmeyer, S. J.; Bentley, C.; Dordevic, M. M.

    2014-12-01

    As part of an NSF TUES Type 3 project entitled "Google Earth for Onsite and Distance Education (GEODE)," we are assembling a "Grand Tour" of locations on Earth and other terrestrial bodies that every geoscience student should know about and visit at least in virtual reality. Based on feedback from colleagues at previous meetings, we have identified nine Grand Tour themes: "Plates and Plumes," "Rocks and Regions," "Geology Through Time," "The Mapping Challenge*," "U.S. National Parks*," "The Magical Mystery Tour*," "Resources and Hazards," "Planets and Moons," and "Top of the Pops." Themes marked with an asterisk are most developed at this stage and will be demonstrated in real time. The Mapping Challenge invites students to trace geological contacts, measure bedding strike and dip and the plunge, trend, and facing of a fold. There is an advanced tool for modeling periclinal folds. The challenge is presented in a game-like format with an emphasis on puzzle-solving that will appeal to students regardless of gender. For the tour of U.S. national parks, we divided the most geologically important parks into four groups—Western Pacific, West Coast, Rockies, and East Coast. We are combining our own team's GigaPan imagery with imagery already available on the Internet. There is a great deal of imagery just waiting to be annotated for geological education purposes. The Magical Mystery Tour takes students to Google Streetview locations selected by instructors. Students are presented with questions or tasks and are given automatic feedback. Other themes are under development. Within each theme, we are crowd-sourcing contributions from colleagues and inviting colleagues to vote for or against proposed locations and student interactions. The GEODE team includes the authors and: Heather Almquist, Stephen Burgin, Cinzia Cervato, Gene Cooper, Paul Karabinos, Terry Pavlis, Jen Piatek, Bill Richards, Jeff Ryan, Ron Schott, Kristen St. John, and Barb Tewksbury.

  1. 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

  2. 77 FR 11575 - Notice of Inventory Completion: Grand Rapids Public Museum, Grand Rapids, MI

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-27

    ... National Park Service Notice of Inventory Completion: Grand Rapids Public Museum, Grand Rapids, MI AGENCY: National Park Service, Interior. ACTION: Notice. SUMMARY: The Grand Rapids Public Museum has completed an... Rapids Public Museum. Repatriation of the human remains and associated funerary objects to the...

  3. FOI and Fire at the MGM Grand.

    ERIC Educational Resources Information Center

    Thompson, William N.; Marie, Janice

    The fire at the MGM Grand Hotel in Las Vegas, Nevada, brought to light a lack of compliance with the freedom of information philosophy and its supporting statutes. Freedom of information means circulation of important information. However, at the Grand Hotel, the hotel staff had not been properly trained in disaster procedures, the escape…

  4. 33 CFR 117.633 - Grand River.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Grand River. 117.633 Section 117.633 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Michigan § 117.633 Grand River. (a) Public vessels of the...

  5. 33 CFR 117.633 - Grand River.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Grand River. 117.633 Section 117.633 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Michigan § 117.633 Grand River. (a) Public vessels of the...

  6. 33 CFR 117.633 - Grand River.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Grand River. 117.633 Section 117.633 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Michigan § 117.633 Grand River. (a) Public vessels of the...

  7. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the...

  8. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the...

  9. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the...

  10. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the...

  11. 33 CFR 117.285 - Grand Canal.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Grand Canal. 117.285 Section 117.285 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Florida § 117.285 Grand Canal. (a) The draw of the...

  12. 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

  13. 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

  14. 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

  15. 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

  16. Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: IV. Five new species of Thaparocleidus Jain, 1952 (Ancylodiscoididae) from Pangasius krempfi, P. kunyit, P. mekongensis and P. sabahensis.

    PubMed

    Pariselle, A; Lim, L H S; Lambert, A

    2002-12-01

    The examination of gill parasites from Pangasius krempfi Roberts & Vidthayanon, 1991; P. kunyit Pouyaud et al., 1999; P. mekongensis Gustiano et al., in press and P. sabahensis Gustiano et al., in press (Siluriformes, Pangasiidae) in Southeast Asia revealed the presence of six species of Monogenea, all belonging to the genus Thaparocleidus Jain, 1952 (Monogenea, Ancylodiscoididae) as defined by Lim (1996) and Lim et al. (2001). One has been previously described (T. vietnamensis Pariselle et al., 2002), five are considered as new species: T. humerus n. sp. and T. culter n. sp. on P. kunyit; T. mehurus n. sp. and T. culteroides n. sp. on P. sabahensis; and T. phuongi n. sp. on the four studied host species. The latter one, due to slight morphometric differences linked to geographical origin of hosts, is described as made up of three sub-species: T. phuongi phuongi n. sub-sp., T. phuongi malaysiensis n. sub-sp. and T. phuongi indonesiensis n. sub-sp. PMID:12514945

  17. Grand unification of preon models

    SciTech Connect

    Rizzo, T.G.

    1983-11-01

    We investigate several preon models within the context of grand unification. We use the value of ..cap alpha../sub s/ (i.e., ..lambda../sub MS/, where MS indicates the modified minimal-subtraction scheme) and the precolor scale M/sub PC/ as input into the renormalization-group equations, and calculate the value of sin/sup 2/theta/sub W/(M/sub W/) and the unification mass scale M/sub U/. As a consistency check we follow the precolor coupling constant down from M/sub U/ to M/sub PC/ to see where precolor becomes strong. The models which are consistent with present neutral-current data and proton-lifetime limits yield values of M/sub U/ somewhat larger than the standard SU(5) model. The unification group G is not constrained by the analysis. We consider both SU(N) and SO(N) as precolor groups and allow for two breaking patterns G..-->..SU(3)/sub C/ x SU(2)/sub L/ x U(1)/sub Y/ x precolor or the low right-handed mass-scale possibility G ..-->.. SU(3)/sub c/ x SU(2)/sub L/ x SU(2)/sub R/ x U(1)/sub B-L/ x precolor. Of the various SO(N) possibilities examined none are found to satisfy all the constraints.

  18. 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....

  19. 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

  20. Supersymmetry and supergravity: Phenomenology and grand unification

    SciTech Connect

    Arnowitt, R. |; Nath, P.

    1993-12-31

    A survey is given of supersymmetry and supergravity and their phenomenology. Some of the topics discussed are the basic ideas of global supersymmetry, the minimal supersymmetric Standard Model (MSSM) and its phenomenology, the basic ideas of local supersymmetry (supergravity), grand unification, supersymmetry breaking in supergravity grand unified models, radiative breaking of SU(2) {times} U(1), proton decay, cosmological constraints, and predictions of supergravity grand unified models. While the number of detailed derivations are necessarily limited, a sufficient number of results are given so that a reader can get a working knowledge of this field.

  1. 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.

  2. 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 southwest. Note the trash racks at the entrance to the penstocks. - Columbia Basin Project, Grand Coulee Dam & Franklin D. Roosevelt Lake, Across Columbia River, Southeast of Town of Grand Coulee, Grand Coulee, Grant County, WA

  3. Different Views of the Grand Canyon

    NASA Astrophysics Data System (ADS)

    Elders, Wilfred A.

    Each year the spectacular scenery of the Grand Canyon of Arizona awes its more than 4,000,000 visitors. Just as its enormous scale dwarfs our human sense of space, its geology also dwarfs our human sense of time. Perhaps here, more than anywhere else on the planet, we can experience a sense of ``Deep Time.'' The colorful rocks exposed in the vertical walls of the canyon display a span of 1.8 billion years of Earth's history [Beus and Morales, 2003]. But wait! There is a different view! According to Vail [2003], this time span is only 6,000 years and the Grand Canyon and its rocks are a record of the Biblical 6 days of creation and Noah's flood. During a visit to Grand Canyon, in August 2003, I learned that Vail's book, Grand Canyon: A Different View, is being sold within the National Park. The author and compiler of Grand Canyon: A Different View is a Colorado River guide who is well acquainted with the Grand Canyon at river level. He has produced a book with an attractive layout and beautiful photographs. The book is remarkable because it has 23 co-authors, all male, who comprise a veritable ``Who's Who'' in creationism. For example, Henry Morris and John Whitcomb, the authors of the seminal young Earth creationist text, The Genesis Flood [Whitcomb and Morris, 1961], each contribute a brief introduction. Each chapter of Grand Canyon: A Different View begins with an overview by Vail, followed by brief comments by several contributors that ``have been peer reviewed to ensure a consistent and Biblical perspective.'' This perspective is strict Biblical literalism.

  4. Growth and reproduction aspects of Pimelodus maculatus Lacépède, 1803 (Siluriformes, Pimelodidae) of the Cachoeira Dourada reservoir, state of Goiás and Minas Gerais, Brazil.

    PubMed

    Sabinson, L M; Rodrigues Filho, J L; Peret, A C; Verani, J R

    2014-05-01

    Growth and reproduction parameters of the yellow-mandi, Pimelodus maculatus Lacépède, 1803 (Siluriformes, Pimelodidae), were determined for the Cachoeira Dourada reservoir (GO/MG). The field work occurred throughout February 2007 to January 2008 (with the exception of December 2007). Gill nets with mesh sizes from 1.5 to 10 centimeters were placed in three different areas in the reservoir and were collected 24 hours later. A total of 538 specimens were captured, amongst which 242 were females, 219 were males and 77 could not have their sex determined. Sex ratio differed from 1:1 only during July 2007 and January 2008, with males and females predominating in each of those months. Males occupied the medium length classes (18.9 to 24.3 cm) while females were most abundant in the superior classes (from 27 to 37.8 cm).The growth constant K was statistically equal for males (K=0.1851) and females (K=0.1708), however, females P. maculatus may have a greater investment in reproductive tissue, a fact indicated by the elevated values of Kn and GSI during the summer. Bearing in mind that P. maculatus reproduces in the rainy season, a greater gain in weight is expected during the months before the reproduction season, and that after it occurs the fish loses fat and weight as a consequence of metabolic effort. Still, the absence of juveniles may be an indication that the species did not find in the reservoir the proper conditions for reproduction and growth of its fry. PMID:25166330

  5. 75 FR 37308 - Drawbridge Operation Regulations; Grand River, Grand Haven, MI

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-29

    ..., call or e-mail Mr. Lee D. Soule, Bridge Management Specialist, Ninth Coast Guard District; telephone....S. 31 Bridge at Mile 2.89 over the Grand River, at Grand Haven, MI. This deviation temporarily... Docket Management Facility (M-30), U.S. Department of Transportation, West Building Ground Floor,...

  6. Origin of grand minima in sunspot cycles.

    PubMed

    Choudhuri, Arnab Rai; Karak, Bidya Binay

    2012-10-26

    One of the most striking aspects of the 11-year sunspot cycle is that there have been times in the past when some cycles went missing, a most well-known example of this being the Maunder minimum during 1645-1715. Analyses of cosmogenic isotopes ((14)C and (10)Be) indicated that there were about 27 grand minima in the last 11,000 yrs, implying that about 2.7% of the solar cycles had conditions appropriate for forcing the Sun into grand minima. We address the question of how grand minima are produced and specifically calculate the frequency of occurrence of grand minima from a theoretical dynamo model. We assume that fluctuations in the poloidal field generation mechanism and in the meridional circulation produce irregularities of sunspot cycles. Taking these fluctuations to be Gaussian and estimating the values of important parameters from the data of the last 28 solar cycles, we show from our flux transport dynamo model that about 1-4% of the sunspot cycles may have conditions suitable for inducing grand minima. PMID:23215173

  7. 2010 Panel on the Biomaterials Grand Challenges

    PubMed Central

    Reichert, William “Monty”; Ratner, Buddy D.; Anderson, James; Coury, Art; Hoffman, Allan S.; Laurencin, Cato T.; Tirrell, David

    2014-01-01

    In 2009, the National Academy for Engineering issued the Grand Challenges for Engineering in the 21st Century comprised of 14 technical challenges that must be addressed to build a healthy, profitable, sustainable, and secure global community (http://www.engineeringchallenges.org). Although crucial, none of the NEA Grand Challenges adequately addressed the challenges that face the biomaterials community. In response to the NAE Grand Challenges, Monty Reichert of Duke University organized a panel entitled Grand Challenges in Biomaterials at the at the 2010 Society for Biomaterials Annual Meeting in Seattle. Six members of the National Academies—Buddy Ratner, James Anderson, Allan Hoffman, Art Coury, Cato Laurencin, and David Tirrell—were asked to propose a grand challenge to the audience that, if met, would significantly impact the future of biomaterials and medical devices. Successfully meeting these challenges will speed the 60-plus year transition from commodity, off-the-shelf biomaterials to bioengineered chemistries, and biomaterial devices that will significantly advance our ability to address patient needs and also to create new market opportunities. PMID:21171147

  8. Rio Grande sediment study -- Supply and transport

    SciTech Connect

    Diniz, E.; Eidson, D.; Bourgeois, M.

    1995-12-31

    The 1992 New Mexico State Legislature directed the Interstate Stream Commission (ISC) to study the feasibility of clearing and deepening the channel of the Rio Grande between Albuquerque and Elephant Butte to improve water conveyance and water conservation. The ISC requested the US Army Corps of Engineers-Albuquerque District (COE) to undertake this study under the Planning Assistance to States Program. The study was divided into two phases. Phase 1 consisted of an analysis of the sediment contribution to the Rio grande from the tributaries and an evaluation of the existing US Geological Survey (USGS) sediment gage data. Phase 2 will be an analysis, through the use of an HEC-6, Scour and Deposition in Rivers and Reservoirs, computer model, to determine the long-term performance of any Rio Grande channel improvements. This narrative presents the Phase 1 methods and results.

  9. Grand and Semigrand Canonical Basin-Hopping

    PubMed Central

    2015-01-01

    We introduce grand and semigrand canonical global optimization approaches using basin-hopping with an acceptance criterion based on the local contribution of each potential energy minimum to the (semi)grand potential. The method is tested using local harmonic vibrational densities of states for atomic clusters as a function of temperature and chemical potential. The predicted global minima switch from dissociated states to clusters for larger values of the chemical potential and lower temperatures, in agreement with the predictions of a model fitted to heat capacity data for selected clusters. Semigrand canonical optimization allows us to identify particularly stable compositions in multicomponent nanoalloys as a function of increasing temperature, whereas the grand canonical potential can produce a useful survey of favorable structures as a byproduct of the global optimization search. PMID:26669731

  10. Research Furthers Conservation of Grand Canyon Sandbars

    USGS Publications Warehouse

    Melis, Theodore S.; Topping, David J.; Rubin, David M.; Wright, Scott A.

    2007-01-01

    Grand Canyon National Park lies approximately 25 km (15 mi) down-river from Glen Canyon Dam, which was built on the Colorado River just south of the Arizona-Utah border in Glen Canyon National Recreation Area. Before the dam began to regulate the Colorado River in 1963, the river carried such large quantities of red sediment, for which the Southwest is famous, that the Spanish named the river the Rio Colorado, or 'red river'. Today, the Colorado River usually runs clear below Glen Canyon Dam because the dam nearly eliminates the main-channel sand supply. The daily and seasonal flows of the river were also altered by the dam. These changes have disrupted the sedimentary processes that create and maintain Grand Canyon sandbars. Throughout Grand Canyon, sandbars create habitat for native plants and animals, supply camping beaches for river runners and hikers, and provide sediment needed to protect archaeological resources from weathering and erosion. Maintenance of sandbars in the Colorado River ecosystem, the river corridor that stretches from the dam to the western boundary of Grand Canyon National Park, is a goal of the Glen Canyon Dam Adaptive Management Program. The program is a federally authorized initiative to ensure that the mandates of the Grand Canyon Protection Act of 1992 are met through advances in information and resource management. The U.S. Geological Survey's Grand Canyon Monitoring and Research Center has responsibility for scientific monitoring and research efforts for the program. Extensive research and monitoring during the past decade have resulted in the identification of possible alternatives for operating Glen Canyon Dam that hold new potential for the conservation of sand resources.

  11. District-heating system, La Grande, Oregon

    SciTech Connect

    Not Available

    1982-01-01

    The area suggested for district heating feasibility study encompassed slightly over 400 acres extending north and south from the geographic center of the city. This district was subdivided into 8 areas, which include the Grande Ronde Hospital, Eastern Oregon State College, La Grande school district, one institutional area, one commercial area and three residential areas. Basic space heating loads developed for the various areas after a survey by county personnel and computation using a computer program form the basis for this economic feasibility study.

  12. Upper Rio Grande Simulation Model (URGSIM)

    SciTech Connect

    2010-08-05

    URGSIM estimates the location of surface water and groundwater resources in the upper Rio Grande Basin between the Colorado-New Mexico state line, and Caballo Reservoir from 1975 - 2045. It is a mass balance hydrology model of the Upper Rio Grande surface water, groundwater, and water demand systems which runs at a monthly timestep from 1975-1999 in calibration mode, 2000 ���¢�������� 2004 in validation mode, and 2005 ���¢�������� 2045 in scenario analysis mode.

  13. Five Grand Challenges for Library Research.

    ERIC Educational Resources Information Center

    Buckland, Michael K.

    2003-01-01

    Five Grand Challenges are proposed for library research: (1) Library service: Could library services be made more meaningful? (2) Library theory: Who knew what when? (3) Library design: Have digital libraries been designed backwards? (4) Library values: How neutral can libraries be? (5) Library communities: How do communities differ? (AEF)

  14. CCR Grand Rounds and Eminent Lectures

    Cancer.gov

    CCR Grand Rounds 2015 - 2016 March 2016  4      Ji Luo, Ph.D.Exploring Genetic Dependencies in Ras Mutant Cancer Cells Investigator Laboratory of Cancer Biology and Genetics Center for Cancer Research National Cancer Institute 11 James L. Gulley, M.D., Ph

  15. A Grand Unified Theory of Interdisciplinarity

    ERIC Educational Resources Information Center

    Davis, Lennard J.

    2007-01-01

    Aside from the appeal to administrators as a tool to reduce costs by combining less robust departments with heftier relations, interdisciplinarity is a powerful idea because it implies that different branches of knowledge can benefit from talking to one another: a grand, unified theory of knowledge in which each discipline contributes building…

  16. Precocious unification in simple grand unified theories

    SciTech Connect

    Ozer, M.

    1985-01-01

    We investigate how simple grand unified theories with a precocious-unification mass can be constructed. The maximal local symmetry of 2mn left-handed fermions and their left-handed antiparticles is shown to be a viable candidate, where m and n are the number of families and colors, respectively. The predictions of such a model are studied.

  17. 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...

  18. 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...

  19. 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...

  20. Superheavy spectrum and supersymmetric grand unification

    SciTech Connect

    Faraggi, A.E. ); Grinstein, B.; Meshkov, S. )

    1993-06-01

    We examine in detail the effect of the superheavy particle spectrum on the claim that recent data from CERN LEP are consistent with a SUSY SU(5) grand unified theory (GUT) whose superparticle spectrum is characterized by a single scale [ital M][sub [ital S

  1. 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...

  2. Substance Abuse in the Rio Grande Valley.

    ERIC Educational Resources Information Center

    Zavaleta, Anthony N.

    1979-01-01

    In the Mexican American barrios of Texas' Lower Rio Grande Valley, existence is complicated by the interactive forces of culture, society, and economy. These three factors act in unison to create an etiology of alcohol and drug use and abuse which is poorly understood by persons outside the barrio's grasp. (Author/NQ)

  3. Grand Canyon as seen from STS-58

    NASA Technical Reports Server (NTRS)

    1993-01-01

    A broad view westward along the Colorado River from just below Glen Canyon Dam (out of picture), through the entire Grand Canyon to Lake Mead and Las Vegas and westward to include southern Nevada and much of California. The Salton Sea, Los Angeles Basin, and Great Valley rim the Pacific Coast in the distance.

  4. 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.

  5. 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…

  6. Grand Unification with and without Supersymmetry

    SciTech Connect

    Melfo, Alejandra

    2007-06-19

    Grand Unified Theories based on the group SO(10) generically provide interesting and testable relations between the charged fermions and neutrino sector masses and mixings. In the light of the recent neutrino data, we reexamine these relations both in supersymmetric and non-supersymmetric models, and give a brief review of their present status.

  7. The Cambrian eustatic signal: Not so grand

    SciTech Connect

    Cowan, C.A.; James, N.P. )

    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.

  8. 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.

  9. 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.

  10. 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…

  11. 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…

  12. 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.

  13. Plasma nanoscience: setting directions, tackling grand challenges

    NASA Astrophysics Data System (ADS)

    (Ken Ostrikov, Kostya; Cvelbar, Uros; Murphy, Anthony B.

    2011-05-01

    This review paper presents historical perspectives, recent advances and future directions in the multidisciplinary research field of plasma nanoscience. The current status and future challenges are presented using a three-dimensional framework. The first and the largest dimension covers the most important classes of nanoscale objects (nanostructures, nanofeatures and nanoassemblies/nanoarchitectures) and materials systems, namely carbon nanotubes, nanofibres, graphene, graphene nanoribbons, graphene nanoflakes, nanodiamond and related carbon-based nanostructures; metal, silicon and other inorganic nanoparticles and nanostructures; soft organic nanomaterials; nano-biomaterials; biological objects and nanoscale plasma etching. In the second dimension, we discuss the most common types of plasmas and plasma reactors used in nanoscale plasma synthesis and processing. These include low-temperature non-equilibrium plasmas at low and high pressures, thermal plasmas, high-pressure microplasmas, plasmas in liquids and plasma-liquid interactions, high-energy-density plasmas, and ionized physical vapour deposition as well as some other plasma-enhanced nanofabrication techniques. In the third dimension, we outline some of the 'Grand Science Challenges' and 'Grand Socio-economic Challenges' to which significant contributions from plasma nanoscience-related research can be expected in the near future. The urgent need for a stronger focus on practical, outcome-oriented research to tackle the grand challenges is emphasized and concisely formulated as from controlled complexity to practical simplicity in solving grand challenges.

  14. Columbia's Grand Narrative of Contemporary Civilization.

    ERIC Educational Resources Information Center

    Howley, Aimee; Hartnett, Richard

    1997-01-01

    Discusses Lyotard's view of the narrative as a story through which meanings are legitimated. Reviews the development of the core curriculum of New York's Columbia College, arguing that it represents a "grand narrative" of the college. Discusses the effect of this narrative on students and faculty. (26 citations) (AJL)

  15. Discovery of the Grand Unified Theory

    NASA Astrophysics Data System (ADS)

    Nair, Radhakrishnan

    2010-11-01

    I have discovered the Grand Unified Theory which unites quantum with classical mechanics. This discovery is based on a geocentric universe, the myth of empty space, four states of matter in three dimensional space and space-time exponentiation, instead of space-time curvature.

  16. Addendum to ''Grand unification of preon models''

    SciTech Connect

    Rizzo, T.G.

    1983-12-01

    We extend the discussion of our previous work and investigate the possibility of low-energy parity restoration, i.e., the left-right-symmetric model, within the context of several preon theories of grand unification. The constraints imposed by unification, proton lifetime, and neutral-current data are discussed.

  17. Middle Rio Grande Cooperative Water Model

    Energy Science and Technology Software Center (ESTSC)

    2005-11-01

    This is computer simulation model built in a commercial modeling product Called Studio Expert, developed by Powersim, Inc. The simulation model is built in a system dynamics environment, allowing the simulation of the interaction among multiple systems that are all changing over time. The model focuses on hydrology, ecology, demography, and economy of the Middle Rio Grande, with Water as the unifying feature.

  18. 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.

  19. 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

  20. 10. Photocopy of architectural blueprint (on file at La Grande ...

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

    10. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1958 - Union Ranger District Compound, Office, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  1. 6. Photocopy of pencil drawing (on file at La Grande ...

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

    6. Photocopy of pencil drawing (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1939 CIRCULATION PLAN - Union Ranger District Compound, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  2. 6. Photocopy of architectural blueprint (on file at La Grande ...

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

    6. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service RANGERS RESIDENCE - Union Ranger Distric Compound, Rangers Residence, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  3. 11. Photocopy of blueprint (on file at La Grande District ...

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

    11. Photocopy of blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1939 - Union Ranger District Compound, Guard Residence, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  4. 43. and Design, Grand Canyon National Park, dated August 23, ...

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

    43. and Design, Grand Canyon National Park, dated August 23, 1934, and September 17, 1934 (original located at Federal Records Center, Denver, Colorado, #113/3084-set of 2) SEWAGE PLANT ADDITION. - Water Reclamation Plant, Grand Canyon, Coconino County, AZ

  5. "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

  6. "No. 190. Grand Valley Diversion Dam. Diversion gates, water flowing ...

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

    "No. 190. Grand Valley Diversion Dam. Diversion gates, water flowing into high line. June, 1917. R.B.D." - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  7. 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

  8. 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

  9. 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

  10. 19. VIEW OF GRAND CANAL, SHOWING NEW ALIGNMENT, LOOKING NORTH ...

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

    19. VIEW OF GRAND CANAL, SHOWING NEW ALIGNMENT, LOOKING NORTH TOWARD CROSSCUT HYDRO PLANT ROOF WITH FOUR CUPOLAS VISIBLE. Photographer: Mark Durben, May 1990 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

  11. 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

  12. 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.

  13. 76 FR 43597 - Drawbridge Operation Regulation; Lower Grand River, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-21

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulation; Lower Grand River, LA AGENCY: Coast... operation of the LA 77 bridge across the ] Lower Grand River, mile 47.0 (Alternate Route) at Grosse Tete..., telephone 202-366-9826. SUPPLEMENTARY INFORMATION: The LA 77 bridge across the Lower Grand River, mile...

  14. 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

  15. 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

  16. La réfrigération des grandes machines supraconductrices

    NASA Astrophysics Data System (ADS)

    Gistau, Guy

    1991-02-01

    The large scale superconducting devices which are now in operation for deviation of heavy particles, acceleration of light particles or plasma confinement need very large powers of refrigeration. After a short survewing of the different functions of refrigerators and the special requirements for large units, the paper describes some existing or envisaged cooling systems which have an equivalent cooling power in the range of 5 kW at 4.5 K. Les grands appareils de physique utilisant les supraconducteurs demandent des puissances cryogéniques de plus en plus importantes. Après un examen des fonctions élémentaires assurées par un réfrigérateur liées au cahier des charges spécifique à chaque utilisation, les spécificités des grosses unités de réfrigération (fiabilité, efficacité, flexibilité, automatisme) sont mises en évidence. Les solutions proposées dans plusieurs grands projets nécessitant des puissances froides supérieures à 5 kW à 4,5 K sont discutées.

  17. Grand unified model with composite fermions

    SciTech Connect

    Xue, P.

    1982-04-01

    We propose a grand unified model with composite particles based on the SO(3) x SU(8) group. We assume that quarks and leptons are formed at a scale of about 10/sup 15/ GeV. The composite states are singlets of the metacolor group SO(3). We discuss nontrivial solutions to satisfy 't Hooft's constraint with most economic preons, i.e., the composite fermion states can be constructed out of only one or three preons. Thus we can provide a natural explanation for the occurrence of massless composite quarks and leptons in a strongly interacting gauge theory. This model can accommodate three generations of observed light composite quarks and leptons. We also discuss the breaking mechanism of the SU(8) group by Higgs bosons which also are constructed out of preon condensates. Choosing suitably Higgs-boson condensates, we can get some nice results which have been obtained in ordinary SU(8) grand unified models. Some open problems are noted.

  18. Upper Rio Grande Simulation Model (URGSIM)

    Energy Science and Technology Software Center (ESTSC)

    2010-08-05

    URGSIM estimates the location of surface water and groundwater resources in the upper Rio Grande Basin between the Colorado-New Mexico state line, and Caballo Reservoir from 1975 - 2045. It is a mass balance hydrology model of the Upper Rio Grande surface water, groundwater, and water demand systems which runs at a monthly timestep from 1975-1999 in calibration mode, 2000 – 2004 in validation mode, and 2005 – 2045 in scenario analysis mode.

  19. Is the new Grand minimum in progress?

    NASA Astrophysics Data System (ADS)

    Zolotova, N. V.; Ponyavin, D. I.

    2014-05-01

    The sunspot numbers and polar faculae are analyzed to demonstrate that the current solar activity is close to the Grand minimum. Notably protracted Cycle 23 is found to be similar to the cycles on the eve of the Dalton and Gleissberg-Gnevyshev minima. The polar faculae as proxy of the polar field replicate variations of the sunspot cycle amplitude over the last 100 years. The weak sunspot activity of Cycle 24 is assumed to result in the weak polar field.

  20. SeaWiFS: Grand Banks Brightening

    NASA Technical Reports Server (NTRS)

    2002-01-01

    There is a hole in the cloud cover today over the Grand Banks of Newfoundland through which SeaWiFS was able to catch this view of a very large patch of bright aquamarine water. Either a large storm has passed over the Banks stirring up the bottom sediments, or some large bloom of phytoplankton is under way. Part of the Island of Newfoundland, including the snow-covered Avalon Peninsula, can also be seen in the northwest corner of the image.

  1. Thriving Earth Exchange: AGU's new grand challenge

    NASA Astrophysics Data System (ADS)

    McEntee, Chris; Williams, Billy

    2012-11-01

    Imagine a world where scientists are acknowledged and celebrated for their good works. Imagine being able to make a powerful impact, applying your expertise and experience to create real solutions to ensure a sustainable future. Now imagine those two ideas linked: AGU scientists engaged in creating solutions that are recognized and celebrated for their positive impact on our world. The AGU Grand Challenge: Thriving Earth Exchange, a new idea from our member leaders, is about making this dream real.

  2. Raptor Use of the Rio Grande Gorge

    SciTech Connect

    Ponton, David A.

    2015-03-20

    The Rio Grande Gorge is a 115 km long river canyon located in Southern Colorado (15 km) and Northern New Mexico (100 km). The majority of the canyon is under the administration of the Bureau of Land Management {BLM), and 77 km of the canyon south of the Colorado/New Mexico border are designated Wild River under the National Wild and Scenic Rivers Act of 1968. Visits I have made to the Rio Grande Gorge over the past 15 .years disclosed some raptor utilization. As the Snake River Birds of Prey Natural Area gained publicity, its similarity to the Rio Grande Gorge became obvious, and I was intrigued by the possibility of a high raptor nesting density in the Gorge. A survey in 1979 of 20 km of the northern end of the canyon revealed a moderately high density of red-tailed hawks and prairie falcons. With the encouragement of that partial survey, and a need to assess the impact of river-running on nesting birds of prey, I made a more comprehensive survey in 1980. The results of my surveys, along with those of a 1978 helicopter survey by the BLM, are presented in this report, as well as general characterization of the area, winter use by raptors, and an assessment of factors influencing the raptor population.

  3. Rio Grande pipeline introduces LPG to Mexico

    SciTech Connect

    1997-06-01

    Rio Grande Pipeline, a joint venture between Mid-America Pipeline Co., Amoco Pipeline Co. and Navajo Pipeline Co., has broken new ground in the energy industry as the first LPG pipeline to cross the US-Mexico border. Plans for the project were announced in November 1995 and first deliveries started three months ago on March 21, 1997. The 8-inch, 265-mile pipeline originates near Odessa, TX, where it receives an 85-15 propane-butane mix via a connection to Mid-America Pipeline. From Odessa, product moves west through the Texas desert and crosses the Rio Grande River about 15 miles south of El Paso near Clint, TX and extends 20 miles into Mexico. Capacity of the line is 24,000 bpd and it has been averaging about 22,000 bpd since line-fill. All in all, it sounded like a reasonably feasible, routine project. But perceptions can be deceiving, or at least misleading. In other words, the project can be summarized as follows: one river, two cultures and a world of difference. The official border crossing for pipeline construction took place on Dec. 2, 1996, with a directional drill under the Rio Grande River, but in actuality, the joint venture partners were continually bridging differences in language, laws, customs and norms with Pemex and contracted workers from Mexico.

  4. Introduction-Grand Challenges and small steps.

    PubMed

    De Grandis, Giovanni; Efstathiou, Sophia

    2016-04-01

    This collection addresses two different audiences: 1) historians and philosophers of the life sciences reflecting on collaborations across disciplines, especially as regards defining and addressing Grand Challenges; 2) researchers and other stakeholders involved in cross-disciplinary collaborations aimed at tackling Grand Challenges in the life and medical sciences. The essays collected here offer ideas and resources both for the study and for the practice of goal-driven cross-disciplinary research in the life and medical sciences. We organise this introduction in three sections. The first section provides some background and context. The second motivates our take on this topic and then outlines the central ideas of each paper. The third section highlights the specificity and significance of this approach by considering: a) how this collection departs from existing literature on inter- and trans-disciplinarity, b) what is characteristic about this approach, and c) what role this suggests for the history and philosophy of the life sciences in addressing Grand Challenges. PMID:26705674

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

    SciTech Connect

    Gordon, H.T.

    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.

  6. 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.

  7. Grand rounds for dental students: an exploration.

    PubMed

    Fasbinder, D J; Heys, D R; Holland, G R; Keerthy, Akshay; Murdoch-Kinch, Carol Anne; Inglehart, Marita R

    2015-05-01

    Grand Rounds are widely used in medicine for educating students comprehensively about clinical issues. The aim of this study was to explore the value of Grand Rounds for introducing first- (D1) and second-year (D2) dental students to an interdisciplinary approach to dental care. The objectives were to explore how interested students were in various topics, which topics they would like to see addressed in future sessions, which aspects they liked/disliked, how they evaluated the program components, and how they evaluated the outcomes. Data were collected from D1s at the end of the Year 1 fall term and from D1s and D2s at the beginning and end of the Year 1 winter term and at the end of Year 2. Response rates for most of the groups ranged from 88% to 100%, but response rates for surveys at the end of the study period fell to 40% and 32%. The results showed that the students were most interested in clinical topics that were presented in an interdisciplinary way. Their suggested topics ranged from specialty-specific issues to treatment-related topics such as implants and cosmetic dentistry. The open-ended responses showed that students liked learning differing perspectives on these topics, but disliked the course-related assignments and the preparation work in small groups. The closed-ended responses showed that the students appreciated the in-class presentations by experts and evaluated the course as helpful in informing them about the complexity of issues and the importance of the interplay between basic and clinical sciences. Educating future dentists in a way in which they embrace interdisciplinary approaches is challenging. Using the Grand Rounds concept could be one approach to increasing students' awareness of the importance of interdisciplinary work. PMID:25941144

  8. La masa de los grandes impactores

    NASA Astrophysics Data System (ADS)

    Parisi, M. G.; Brunini, A.

    Los planetas han sido formados fundamentalmente acretando masa a través de colisiones con planetesimales sólidos. La masa más grande de la distribución de planetesimales y las masas máxima y mínima de los impactores, han sido calculadas usando los valores actuales del período y de la inclinación de los planetas (Lissauer & Safronov 1991; Parisi & Brunini 1996). Recientes investigaciones han mostrado, que las órbitas de los planetas gigantes no han sufrido variaciones con el tiempo, siendo su movimiento regular durante su evolución a partir de la finalización de la etapa de acreción (Laskar 1990, 1994). Por lo tanto, la eccentricidad actual de los planetas gigantes se puede utilizar para imponer una cota máxima a las masas y velocidades orbitales de los grandes impactores. Mediante un simple modelo dinámico, y considerando lo arriba mencionado, obtenemos la cota superior para la masa del planetesimal más grande que impactó a cada planeta gigante al final de su etapa de acreción. El resultado más importante de este trabajo es la estimación de la masa máxima permitida para impactar a Júpiter, la cúal es ~ 1.136 × 10 -1, siendo en el caso de Neptuno ~ 3.99 × 10 -2 (expresada en unidades de la masa final de cada planeta). Además, fue posible obtener la velocidad orbital máxima permitida para los impactores como una función de su masa, para cada planeta. Las cotas obtenidas para la masa y velocidad de los impactores de Saturno y Urano (en unidades de la masa y velocidad final de cada planeta respectivamente) son casi las mismas que las obtenidas para Júpiter debido a que estos tres planetas poseen similar eccentricidad actual. Nuestros resultados están en buen acuerdo con los obtenidos por Lissauer & Safronov (1991). Estas cotas podrían ser utilizadas para obtener la distribución de planetesimales en el Sistema Solar primitivo.

  9. Aldrin at ASVC prior to grand opening

    NASA Technical Reports Server (NTRS)

    1997-01-01

    Apollo 11 Lunar Module Pilot Edward E. 'Buzz' Aldrin, Jr. and his wife, Lois, stand before a painting of an Apollo/Saturn V launch vehicle at the pad in the new Apollo/Saturn V Center (ASVC) at KSC prior to the gala grand opening ceremony for the facility that was held Jan. 8, 1997. The astronauts were invited to participate in the event, which also featured NASA Administrator Dan Goldin and KSC Director Jay Honeycutt. The ASVC also features several other Apollo program spacecraft component displays and multimedia presentations. The facility will be a part of the KSC bus tour that embarks from the KSC Visitor Center.

  10. Local Grand Unification and String Theory

    SciTech Connect

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

    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.

  11. SeaWiFS: Grand Banks Brightening

    NASA Technical Reports Server (NTRS)

    2002-01-01

    There is a hole in the cloud cover today over the Grand Banks of Newfoundland through which SeaWiFS was able to catch this view of a very large patch of bright aquamarine water. Either a large storm has passed over the Banks stirring up the bottom sediments, or some large bloom of phytoplankton is under way. Part of the Island of Newfoundland, including the snow-covered Avalon Peninsula, can also be seen in the northwest corner of the image. Credit: Provided by the SeaWiFS Project, NASA/Goddard Space Flight Center, and ORBIMAGE

  12. Grand unification and enhanced quantum gravitational effects.

    PubMed

    Calmet, Xavier; Hsu, Stephen D H; Reeb, David

    2008-10-24

    In grand unified theories with large numbers of fields, renormalization effects significantly modify the scale at which quantum gravity becomes strong. This in turn can modify the boundary conditions for coupling constant unification, if higher dimensional operators induced by gravity are taken into consideration. We show that the generic size of, and the uncertainty in, these effects from gravity can be larger than the two-loop corrections typically considered in renormalization group analyses of unification. In some cases, gravitational effects of modest size can render unification impossible. PMID:18999739

  13. Quantum Gravitational Effects and Grand Unification

    SciTech Connect

    Calmet, Xavier; Hsu, Stephen D. H.; Reeb, David

    2008-11-23

    In grand unified theories with large numbers of fields, renormalization effects significantly modify the scale at which quantum gravity becomes strong. This in turn can modify the boundary conditions for coupling constant unification, if higher dimensional operators induced by gravity are taken into consideration. We show that the generic size of, and the uncertainty in, these effects from gravity can be larger than the two-loop corrections typically considered in renormalization group analyses of unification. In some cases, gravitational effects of modest size can render unification impossible.

  14. Grand Unification and Enhanced Quantum Gravitational Effects

    SciTech Connect

    Calmet, Xavier; Hsu, Stephen D. H.; Reeb, David

    2008-10-24

    In grand unified theories with large numbers of fields, renormalization effects significantly modify the scale at which quantum gravity becomes strong. This in turn can modify the boundary conditions for coupling constant unification, if higher dimensional operators induced by gravity are taken into consideration. We show that the generic size of, and the uncertainty in, these effects from gravity can be larger than the two-loop corrections typically considered in renormalization group analyses of unification. In some cases, gravitational effects of modest size can render unification impossible.

  15. 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…

  16. 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…

  17. 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

  18. Graviton as a Grand United Gauge Boson

    NASA Astrophysics Data System (ADS)

    Sharafiddinov, Rasulkhozha S.

    2015-04-01

    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 a 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.

  19. 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.

  20. The Grand Solar Minima and the Solar Dynamo

    NASA Astrophysics Data System (ADS)

    Jiang, Jie

    Both the direct sunspot observations and the indirect solar activity proxies indicate the existences of the solar grand minima during which time the solar activities are greatly reduced. They are usually coincided with periods of lower-than-average global temperatures. The existences of the grand minima pose a challenge for the solar dynamo. The main features of the grand minima and the new dynamo models to explain their existences will be reviewed in the paper.

  1. 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.

  2. Green on the Grand: Final monitoring report

    SciTech Connect

    1999-09-01

    Green on the Grand is an office building in Kitchener, Ontario, the first C2000 project in Canada. The building design addresses the four key requirements of a C2000 building: Energy efficiency, minimal environmental impact, occupant health and comfort, and functional performance. Features of the building include engineered wood construction, high-performance windows, radiant hydronic heating, ventilation air heat recovery, and high levels of insulation. This report documents the building construction process and the monitored performance of the building for 1997. Computer simulations were used to assess the energy efficiency of the building design. Information is provided on the monitoring system and on the performance of the building envelope, heating/cooling system, ventilation system, lighting and daylighting system, and other electrical loads, and on occupant perceptions and water consumption. Appendices include tables showing monthly utility consumption and performance of systems monitored.

  3. Neutrino dark energy in grand unified theories

    SciTech Connect

    Bhatt, Jitesh R.; Sarkar, Utpal; Singh, Santosh K.; Gu, P.-H.

    2009-10-01

    We studied a left-right symmetric model that can accommodate the neutrino dark energy ({nu}DE) proposal. The type-III seesaw mechanism is implemented to give masses to the neutrinos. After explaining the model, we study the consistency of the model by minimizing the scalar potential and obtaining the conditions for the required vacuum expectation values of the different scalar fields. This model is then embedded in an SO(10) grand unified theory and the allowed symmetry breaking scales are determined by the condition of the gauge coupling unification. Although SU(2){sub R} breaking is required to be high, its Abelian subgroup U(1){sub R} is broken in the TeV range, which can then give the required neutrino masses and predicts new gauge bosons that could be detected at LHC. The neutrino masses are studied in detail in this model, which shows that at least 3 singlet fermions are required.

  4. Malpractice in the lower Rio Grande Valley.

    PubMed

    Oshel, R E; Bucknam, M; Chen, V T

    1997-01-01

    Data from the National Practitioner Data Bank were examined to assess malpractice payments in the Lower Rio Grande Valley in comparison with those for Texas and the United States as a whole. The Valley was found to have a high rate of malpractice payments when considered on a per physician basis and on a per unit of utilization basis, but an average rate when considered on a population basis. A number of possible explanations (such as the "bad apple" theory, the "settlement for convenience" theory, the case distribution theory, the physician qualifications theory, and the foreign medical graduate theory) were examined to explain the Valley's observed rate of malpractice payments per physician. No explanations are particularly satisfactory. More research is needed, but indications suggest that the observed rate may be driven more by the activities of some attorneys than by the actions of Valley physicians. PMID:9210843

  5. Gauged flavor, supersymmetry and grand unification

    SciTech Connect

    Mohapatra, Rabindra N.

    2012-07-27

    I review a recent work on gauged flavor with left-right symmetry, where all masses and all Yukawa couplings owe their origin to spontaneous flavor symmetry breaking. This is suggested as a precursor to a full understanding of flavor of quarks and leptons. An essential ingredient of this approach is the existence of heavy vector-like fermions, which is the home of flavor, which subsequently gets transmitted to the familiar quarks and leptons via the seesaw mechanism. I then discuss implications of extending this idea to include supersymmetry and finally speculate on a possible grand unified model based on the gauge group SU(5){sub L} Multiplication-Sign SU(5){sub R} which provides a group theoretic origin for the vector-like fermions.

  6. Biological grand universality and its physical challenge

    NASA Astrophysics Data System (ADS)

    Azbel‧, Mark Ya.

    1999-12-01

    Presented quantitative laws of metabolism, mortality and evolution are valid for animals from bacteria to mammals and demonstrate grand universality in biology. Its microscopic origin may be a physical and mathematical challenge. Natural evolution is accurately reduced to the continuous one, “weak” and “strong” Gould-Eldredge spurts. The discovery of writing, i.e. non-genetic, long range, collective information transfer from generation to generation with human rather than natural selection, leads to post-evolution. Technological post-evolution is exponentially rapid and may lead to the extinction of a civilization. This might resolve the Fermi-Hart paradox: if extra-terrestrial intelligence exists, why it cannot be contacted?

  7. Perspective view over the Grand Canyon, Arizona

    NASA Technical Reports Server (NTRS)

    2001-01-01

    This simulated true color perspective view over the Grand Canyon was created from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data acquired on May 12, 2000. The Grand Canyon Village is in the lower foreground; the Bright Angel Trail crosses the Tonto Platform, before dropping down to the Colorado Village and then to the Phantom Ranch (green area across the river). Bright Angel Canyon and the North Rim dominate the view. At the top center of the image the dark blue area with light blue haze is an active forest fire.

    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 Economy, Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products.

    The broad spectral coverage and high spectral resolution of ASTER provides scientists in numerous disciplines with critical information for surface mapping, and monitoring of 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.

    The U.S. science team is located at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The Terra mission is part of NASA's Science Mission Directorate.

    Size: 5 km in foreground to 40 km Location: 36.3 degrees north latitude, 112 degrees west longitude Orientation: North-northeast at top Original Data Resolution: ASTER 15 meters Dates Acquired: May 12, 2000

  8. 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. Entre los elementos implementados cabe destacar el basado en la formulacion mixta u/p, que contiene una interpolacion adicional de grados de libertad de presion. Estos grados de libertad adicionales habitualmente son internos al elemento en mecanica de solidos. En este trabajo se ha desarrollado e implementado en DULCINEA una familia de elementos tridimensionales mixtos en grandes deformaciones que incluye el caso particular BMIX 27/27/4, basado en la formulacion u/p, constituido por 27 nudos, con 27 puntos de integracion estandar y 4 grados de libertad de presiones, y que pasa la condicion Inf-Sup o de Babuska-Brezzi. Sin embargo, se ha observado que la formulacion u/p presenta ciertas limitaciones bajo las hipotesis conjuntas de anisotropia elastica y anisotropia plastica. (Abstract shortened by UMI.)

  9. 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.

  10. 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...

  11. 5. Photocopy of architectural blueprint (on file at La Grande ...

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

    5. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1938 WAREHOUSE (SHEET 2 OF 2) - Union Ranger District Compound, Warehouse, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  12. 9. Photocopy of architectural blueprint (on file at La Grande ...

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

    9. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1938 GUARD RESIDENCE (SHEET 4 OF 4) - Union Ranger District Compound, Guard Residence, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  13. 8. Photocopy of architectural blueprint (on file at La Grande ...

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

    8. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1938 GUARD RESIDENCE (SHEET 3 OF 4) - Union Ranger District Compound, Guard Residence, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  14. 11. Photocopy of architectural drawing (on file at La Grande ...

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

    11. Photocopy of architectural drawing (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1939 OFFICE, DETAILED PLANTING PLAN - Union Ranger District Compound, Office, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  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, 1938 WAREHOUSE (SHEET 1 OF 2) - Union Ranger District Compound, Warehouse, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  16. 9. Photocopy of architectural drawing (on file at La Grande ...

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

    9. Photocopy of architectural drawing (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1958 OFFICE ADDITION (REVISED SHEET 2) - Union Ranger District Compound, Office, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  17. 7. Photocopy of architectural blueprint (on file at La Grande ...

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

    7. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1936 THREE-ROOM OFFICE (SHEET 5) - Union Ranger District Compound, Office, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  18. 3. Photocopy of architectural blueprint (on file at La Grande ...

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

    3. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1936 RANGERS RESIDENCE, GARAGE - Union Ranger District Compound, Garage-Rangers Residence, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  19. 7. Photocopy of architectural drawing (on file at La Grande ...

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

    7. Photocopy of architectural drawing (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1939 RANGERS RESIDENCE, DETAILED PLANTING PLAN - Union Ranger Distric Compound, Rangers Residence, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  20. 6. Photocopy of architectural blueprint (on file at La Grande ...

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

    6. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1936 THREE-ROOM OFFICE (SHEET 4) - Union Ranger District Compound, Office, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  1. 7. Photocopy of architectural blueprint (on file at La Grande ...

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

    7. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1938 GUARD RESIDENCE (SHEET 2 OF 4) - Union Ranger District Compound, Guard Residence, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  2. 8. Photocopy of architectural blueprint (on file at La Grande ...

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

    8. Photocopy of architectural blueprint (on file at La Grande District Office, La Grande, Oregon) USDA Forest Service, 1957 OFFICE ADDITION (SHEET 2) - Union Ranger District Compound, Office, Fronting State Highway 203, at West edge of Union, Union, Union County, OR

  3. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 1 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 Canyon National Park. (a) Commercial passenger-carrying motor vehicles....

  4. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 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 Canyon National Park. (a) Commercial passenger-carrying motor vehicles....

  5. 33 CFR 117.447 - Grand Cabahanosse Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Grand Cabahanosse Bayou. 117.447 Section 117.447 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.447 Grand Cabahanosse Bayou. The...

  6. 33 CFR 117.447 - Grand Cabahanosse Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Grand Cabahanosse Bayou. 117.447 Section 117.447 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.447 Grand Cabahanosse Bayou. The...

  7. 33 CFR 117.447 - Grand Cabahanosse Bayou.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Grand Cabahanosse Bayou. 117.447 Section 117.447 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.447 Grand Cabahanosse Bayou. The...

  8. 33 CFR 117.447 - Grand Cabahanosse Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Grand Cabahanosse Bayou. 117.447 Section 117.447 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.447 Grand Cabahanosse Bayou. The...

  9. 33 CFR 117.447 - Grand Cabahanosse Bayou.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Grand Cabahanosse Bayou. 117.447 Section 117.447 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.447 Grand Cabahanosse Bayou. The...

  10. 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

  11. 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

  12. 36 CFR 7.22 - Grand Teton National Park.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 1 2012-07-01 2012-07-01 false Grand Teton National Park. 7.22 Section 7.22 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.22 Grand Teton National Park. (a) Aircraft—Designated airstrip. (1) Jackson...

  13. 27 CFR 9.129 - Arroyo Grande Valley.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2013-04-01 2013-04-01 false Arroyo Grande Valley. 9.129 Section 9.129 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.129 Arroyo Grande Valley. (a) Name. The name...

  14. 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

  15. "No. 170. Roller crest dam. Grand Valley Project. 1915." Note ...

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

    "No. 170. Roller crest dam. Grand Valley Project. 1915." Note cross-river cableway, and important component of the construction plant - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  16. Copy of historic photographs on file at Grand Valley Users ...

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

    Copy of historic photographs on file at Grand Valley Users Association. No date or caption was available. Note confined canyon and difficulty of relocating transportation routes - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  17. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 1 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 Canyon National Park. (a) Commercial passenger-carrying motor vehicles....

  18. 18. VIEW OF GRAND CANAL, SHOWING OLD ALIGNMENT BEFORE 1989 ...

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

    18. VIEW OF GRAND CANAL, SHOWING OLD ALIGNMENT BEFORE 1989 REALIGNMENT, LOOKING NORTH TOWARD RAILROAD CROSSING AND CROSSCUT STEAM PLANT LARGE WHITE BUILDING. THE CROSSCUT HYDRO PLANT IS HIDDEN BY TREES TO RIGHT OF STEAM PLANT. Photographer: Mark Durben, April 1989 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

  19. 36 CFR 7.22 - Grand Teton National Park.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 1 2011-07-01 2011-07-01 false Grand Teton National Park. 7.22 Section 7.22 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.22 Grand Teton National Park. (a)...

  20. /ital SU/(10) chiral grand unified preon model

    SciTech Connect

    Bao Shu-qing; Xue Xiao-zhou

    1989-07-01

    /ital SU/(/ital N/) chiral grand unified preon models are discussed under some assumed constraints. The result indicates 9/le//ital N//le/19. Among them, the minimal /ital SU/(10) chiral grand unified preon model is constructed in detail. Five generations of quarks and leptons without the presence of exotics are predicted.

  1. 27 CFR 9.129 - Arroyo Grande Valley.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Arroyo Grande Valley. 9.129 Section 9.129 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.129 Arroyo Grande Valley. (a) Name. The name...

  2. 22. VIEW OF GRAND CANAL, SHOWING OLD ALIGNMENT, LOOKING WEST ...

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

    22. VIEW OF GRAND CANAL, SHOWING OLD ALIGNMENT, LOOKING WEST FROM BELOW THE SETTLING BASIN (see HAER Photograph No. AZ-30-17, Crosscut Hydro Plant). Photographer: Mark Durben, April 1989 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

  3. 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

  4. 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 μm 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

  5. Grand Minima in the Sun and Sun-like Stars

    NASA Astrophysics Data System (ADS)

    Saar, Steven

    2015-08-01

    The Maunder minimum (about 1645 - 1715), when the numbers of sunspots dropped precipitously (<2 year-1 during one 30 year interval), raises the question of the long-term stability of the solar dynamo. While it now appears that some aspects of the cycle continued during the minimum, it is also clear that the Sun's dynamo underwent major short-term changes, and that these grand minima are not uncommon. I review what is known, and not known, about solar grand minima. One way to fill in the gaps in our understanding of solar grand minima is to turn to solar-like stars. I review efforts to find stars which may be in grand minima, properties of these candidates, and the light this may shed on the state of the Sun in grand minima.

  6. The Arctic Grand Challenge: Abrupt Climate Change

    NASA Astrophysics Data System (ADS)

    Wilkniss, P. E.

    2003-12-01

    Trouble in polar paradise (Science, 08/30/02), significant changes in the Arctic environment are scientifically documented (R.E. Moritz et al. ibid.). More trouble, lots more, "abrupt climate change," (R. B. Alley, et al. Science 03/28/03). R. Corell, Arctic Climate Impact Assessment team (ACIA), "If you want to see what will happen in the rest of the world 25 years from now just look what's happening in the Arctic," (Arctic Council meeting, Iceland, 08/03). What to do? Make abrupt Arctic climate change a grand challenge for the IPY-4 and beyond! Scientifically:Describe the "state" of the Arctic climate system as succinctly as possible and accept it as the point of departure.Develop a hypothesis and criteria what constitutes "abrupt climate change," in the Arctic that can be tested with observations. Observations: Bring to bear existing observations and coordinate new investments in observations through an IPY-4 scientific management committee. Make the new Barrow, Alaska, Global Climate Change Research Facility a major U.S. contribution and focal point for the IPY-4 in the U.S Arctic. Arctic populations, Native peoples: The people of the North are living already, daily, with wrenching change, encroaching on their habitats and cultures. For them "the earth is faster now," (I. Krupnik and D. Jolly, ARCUS, 2002). From a political, economic, social and entirely realistic perspective, an Arctic grand challenge without the total integration of the Native peoples in this effort cannot succeed. Therefore: Communications must be established, and the respective Native entities must be approached with the determination to create well founded, well functioning, enduring partnerships. In the U.S. Arctic, Barrow with its long history of involvement and active support of science and with the new global climate change research facility should be the focal point of choice Private industry: Resource extraction in the Arctic followed by oil and gas consumption, return the combustion products as greenhouse gases to their regions of origin. Thus multinational company operations are affected by their own activities. There is a strong, convincing case, that these industrial giants must be involved in Arctic partnerships of the grand challenge. A most instructive, very successful example is the collaboration by the chemical companies after the discovery of the polar ozone holes, followed by the replacement of the culprit chlorofluorocarbon compounds. Public relations and involvement/education: The IPY offers a unique opportunity to showcase and drive home, into homes, the seriousness of the issue, Hollywood/Madison Avenue/ NASA style, nothing else will do. Ultimately we need to be mindful that "civilizations are ephemeral compared to species. -What we need is a primer on science, clearly written and unambiguous in its meaning-a primer for anyone interested in the state of the Earth and how to survive and live well on it." (James Lovelock, Science, 08/05/98). - Let's start in the Arctic-NOW.

  7. A liner timeline at Grand Central Sanitation

    SciTech Connect

    Woods, R.

    1994-08-01

    Since the promulgation of the minimum landfill liner requirements under RCRA's Subtitle D in September 1991, nearly every operating landfill in the US that has expanded horizontally has been brought up to speed with basic environmental protection measures, i.e., liners, leachate collection groundwater monitoring, etc. For most landfills, however, these changes did not happen overnight. For more than a decade, most of the states and countless private landfills have been anticipating the advent of Subtitle D and have been upgrading outdated landfills long before the federal regulations were enforced. Grand Central Sanitation, Inc. (GCS, Pen Argyl, Pa.), for example, is a case in point. The family-run company's sanitary landfill began operation as a 52-acre, natural renovation, or earthen barrier, fill in the early 1950s and its first two fill areas, now closed, had only natural soils as a liner. Today, GCS's facility has more than doubled its permitted capacity. Its 10th disposal cell, now under construction, is triple-lined with the latest synthetic geomembranes, including high-density polyethylene (HDPE) liners, geotextiles, geonets, and leachate collection systems.

  8. Convective Dynamo Simulation with a Grand Minimum

    NASA Astrophysics Data System (ADS)

    Augustson, Kyle C.; Brun, A. S.; Miesch, Mark; Toomre, Juri

    2015-01-01

    The global-scale dynamo action achieved in a simulation of a Sun-like star rotating at thrice the solar rate is assessed. The 3-D MHD Anelastic Spherical Harmonic (ASH) code, augmented with a viscosity minimization scheme, is employed to capture convection and dynamo processes in this G-type star. The simulation is carried out in a spherical shell that encompasses 3.8 density scale heights of the solar convection zone. It is found that dynamo action with a high degree of time variation occurs, with many periodic polarity reversals occurring roughly every 6.2 years. The magnetic energy also rises and falls with a regular period. The magnetic energy cycles arise from a Lorentz-force feedback on the differential rotation, whereas the processes leading to polarity reversals are more complex, appearing to arise from the interaction of convection with the mean toroidal fields. Moreover, an equatorial migration of toroidal field is found, which is linked to the changing differential rotation, and potentially to a nonlinear dynamo wave. This simulation also enters a grand minimum lasting roughly 20 years, after which the dynamo recovers its regular polarity cycles.

  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. 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.

  11. 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.

  12. Methane generation at Grand Gulf Nuclear Station

    SciTech Connect

    Carver, M.L.

    1995-09-01

    The methane generation at Grand Gulf has been brought to light twice. The initial event occurred in February 1990 and the second in December 1993. Both events involved the receipt of a cask at Barnwell Waste Management Facility that when opened indicated a gas escaping. The gas was subsequently sampled and indicated a percentage of explosive gas. Both events involved powdered resin and indicated that the generation was from a bacterial attack of the organic materials (cellulose in the powdered resin mixture). The first event occurred and was believed to be isolated in a particular waste stream. The situation was handled and a biocide was found to be effective in treatment of liners until severe cross contamination of another waste stream occurred. This allowed the shipment of a liner that was required to be sampled for explosive gases. The biocide used by GGNS was allowed reintroduction into the floor drains and this allowed the buildup of immunity of the bacterial population to this particular biocide. The approval of a new biocide has currently allowed GGNS to treat liners and ship them offsite.

  13. "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

  14. 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.

  15. GRAND MINIMA AND NORTH-SOUTH ASYMMETRY OF SOLAR ACTIVITY

    SciTech Connect

    Olemskoy, S. V.; Kitchatinov, L. L.

    2013-11-01

    A solar-type dynamo model in a spherical shell is developed with allowance for random dependence of the poloidal field generation mechanism on time and latitude. The model shows repeatable epochs of a strongly decreased amplitude of magnetic cycles similar to the Maunder minimum of solar activity. Random dependence of dynamo parameters on latitude breaks the equatorial symmetry of generated fields. The model shows the correlation of the occurrence of grand minima with deviations in the dynamo field from dipolar parity. An increased north-south asymmetry of magnetic activity can, therefore, be an indicator of transitions to grand minima. Qualitative interpretation of this correlation is suggested. Statistics of grand minima in the model are close to the Poisson random process, indicating that the onset of a grand minimum is statistically independent of preceding minima.

  16. Grand Minima and North-South Asymmetry of Solar Activity

    NASA Astrophysics Data System (ADS)

    Olemskoy, S. V.; Kitchatinov, L. L.

    2013-11-01

    A solar-type dynamo model in a spherical shell is developed with allowance for random dependence of the poloidal field generation mechanism on time and latitude. The model shows repeatable epochs of a strongly decreased amplitude of magnetic cycles similar to the Maunder minimum of solar activity. Random dependence of dynamo parameters on latitude breaks the equatorial symmetry of generated fields. The model shows the correlation of the occurrence of grand minima with deviations in the dynamo field from dipolar parity. An increased north-south asymmetry of magnetic activity can, therefore, be an indicator of transitions to grand minima. Qualitative interpretation of this correlation is suggested. Statistics of grand minima in the model are close to the Poisson random process, indicating that the onset of a grand minimum is statistically independent of preceding minima.

  17. Participatory Design in Grand Rapids: Second Generation Planning.

    ERIC Educational Resources Information Center

    Eriksen, Aase

    1979-01-01

    The Central Park Project, in Grand Rapids, Michigan, illustrates the importance of participation in the design process and the impact of school sites on children as well as on the surrounding neighborhood. (Author/MLF)

  18. Sandbar on the Colorado River in Grand Canyon

    USGS Multimedia Gallery

    Sandbar on the Colorado River in Grand Canyon deposited by 2008 controlled flood. The river is flowing from left to right and the location is approximately 64 miles downstream from Lees Ferry, Arizona....

  19. Sandbar on the Colorado River in Grand Canyon

    USGS Multimedia Gallery

    Sandbar on the Colorado River in Grand Canyon deposited by the 2008 controlled flood. The view is looking downstream and the location is approximately 65 miles downstream from Lees Ferry, Arizona.  ...

  20. 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

  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. Grand challenges in interfacing engineering with life sciences and medicine.

    PubMed

    He, Bin; Baird, Richard; Butera, Robert; Datta, Aniruddha; George, Steven; Hecht, Bruce; Hero, Alfred; Lazzi, Gianluca; Lee, Raphael C; Liang, Jie; Neuman, Michael; Peng, Grace C Y; Perreault, Eric J; Ramasubramanian, Melur; Wang, May D; Wikswo, John; Yang, Guang-Zhong; Zhang, Yuan-Ting

    2013-03-01

    This paper summarizes the discussions held during the First IEEE Life Sciences Grand Challenges Conference, held on October 4-5, 2012, at the National Academy of Sciences, Washington, DC, and the grand challenges identified by the conference participants. Despite tremendous efforts to develop the knowledge and ability that are essential in addressing biomedical and health problems using engineering methodologies, the optimization of this approach toward engineering the life sciences and healthcare remains a grand challenge. The conference was aimed at high-level discussions by participants representing various sectors, including academia, government, and industry. Grand challenges were identified by the conference participants in five areas including engineering the brain and nervous system; engineering the cardiovascular system; engineering of cancer diagnostics, therapeutics, and prevention; translation of discoveries to clinical applications; and education and training. A number of these challenges are identified and summarized in this paper. PMID:23380847

  3. 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

  4. 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

  5. Old Fire/Grand Prix Fire, California

    NASA Technical Reports Server (NTRS)

    2003-01-01

    On November 18, 2003, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite acquired this image of the Old Fire/Grand Prix fire east of Los Angeles. The image is being processed by NASA's Wildfire Response Team and will be sent to the United States Department of Agriculture's Forest Service Remote Sensing Applications Center (RSAC) which provides interpretation services to Burned Area Emergency Response (BAER) teams to assist in mapping the severity of the burned areas. The image combines data from the visible and infrared wavelength regions to highlight the burned areas.

    With its 14 spectral bands from the visible to the thermal infrared wavelength region, and its high spatial resolution of 15 to 90 meters (about 50 to 300 feet), ASTER images Earth to map and monitor the changing surface of our planet.

    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 Economy, Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products.

    The broad spectral coverage and high spectral resolution of ASTER provides scientists in numerous disciplines with critical information for surface mapping, and monitoring of 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.

    Michael Abrams at NASA's Jet Propulsion Laboratory (JPL), Pasadena, Calif., is the U.S. science team leader; Bjorn Eng of JPL is the project manager. The Terra mission is part of NASA's Earth Science Enterprise, a long- term research effort dedicated to understanding the Earth as an integrated system and applying Earth System Science to improve prediction of climate, weather, and natural hazards using the unique vantage point of space.

    Size: 60 by 45 kilometers ( 37.5 by 28.1 miles) Location: 34.5 degrees North latitude, 117.1 degrees West longitude Orientation: North at top Image Data: ASTER bands 1, 3, and 4 Original Data Resolution: 15 meters (49.2 feet) Date Acquired: November 18, 2003

  6. 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.

  7. Chemical Contamination of the Lower Rio Grande near Laredo, TX

    NASA Astrophysics Data System (ADS)

    Flores, B.; Ren, J.; Krishnamurthy, S.; Belzer, W.

    2006-12-01

    The Rio Grande River stretches over 2000 miles from the southern Rocky Mountains in Colorado to the tip of Texas where the Rio Grande meets the Gulf of Mexico. It is the natural boundary between U.S. and Mexico from El Paso, TX, to Brownsville, TX. The communities along the border heavily rely upon the Rio Grande as a primary source of water for consumption, agricultural uses, supporting wildlife and recreation. For many years the Rio Grande has been polluted with municipal, industrial, agricultural and farming contaminants from both sides of the border. This pollution has led to the extinction or reduction of certain wildlife species as well as affecting the health of the residences along the border. Even though great strides have been made in monitoring the Rio Grande, there has been a lack of intense monitoring data collection for pollutants such as pesticides. Three sampling sites including Manadas Creek, the Rio Grande River at International Bridge I, and USGS monitoring site 08459200 off of Highway 83 were chosen. The water quality parameters focused include temperature, pH, conductivity, dissolve oxygen (DO), salinity, total dissolved solids, nutrients, metals and pesticides. Preliminary results have shown elevated concentration of total phosphorus and ortho-phosphorus in the Manadas Creek site. Organochlorinated pesticides such as heptachlor and 4, 4 DDE were detected at various concentrations at all sites and endrin aldehyde was found at Manadas Creek site. This research has provided more information on the current chemical contamination level of the Rio Grande in the Laredo area.

  8. The Grand Tour via Geodesic Interpolation of 2-frames

    NASA Technical Reports Server (NTRS)

    Asimov, Daniel; Buja, Andreas

    1994-01-01

    Grand tours are a class of methods for visualizing multivariate data, or any finite set of points in n-space. The idea is to create an animation of data projections by moving a 2-dimensional projection plane through n-space. The path of planes used in the animation is chosen so that it becomes dense, that is, it comes arbitrarily close to any plane. One of the original inspirations for the grand tour was the experience of trying to comprehend an abstract sculpture in a museum. One tends to walk around the sculpture, viewing it from many different angles. A useful class of grand tours is based on the idea of continuously interpolating an infinite sequence of randomly chosen planes. Visiting randomly (more precisely: uniformly) distributed planes guarantees denseness of the interpolating path. In computer implementations, 2-dimensional orthogonal projections are specified by two 1-dimensional projections which map to the horizontal and vertical screen dimensions, respectively. Hence, a grand tour is specified by a path of pairs of orthonormal projection vectors. This paper describes an interpolation scheme for smoothly connecting two pairs of orthonormal vectors, and thus for constructing interpolating grand tours. The scheme is optimal in the sense that connecting paths are geodesics in a natural Riemannian geometry.

  9. Mutagenic potential of sediments from the Grand Calumet River

    SciTech Connect

    Maccubbin, A.E.; Ersing, N. )

    1991-08-01

    The Grand Calumet River/Indiana Harbor Canal is one of the International Joint Commission's Great Lakes Areas of Concern (AOC). Like many other AOCs, the Grand Calumet River is in a heavily industrialized area and has a history of chemical contamination. Many of the chemicals found in the industrial and municipal wastes that enter the waterway end up in sediment where they are concentrated to high levels. In order to assess the potential genotoxicity of sediments from the Grand Calumet River, the authors determined the mutagenic potential of organic extracts of sediments. The sediment extracts were assayed in the Salmonella/microsome mutagenicity test. In the Ames test, all ten sediment samples assayed were found to be mutagenic. In general, chemicals found in the sediments required metabolic activation before a positive mutagenic response was observed.

  10. Investigations of Muons in EAS with KASCADE-Grande

    NASA Astrophysics Data System (ADS)

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

    2008-01-01

    KASCADE-Grande is a multi detector setup for the investigation of extensive air showers in the primary energy range of the knee including energies around the so-called second knee. With the data of the 700 ṡ 700 m 2 large Grande array shower core position, shower direction, and the total number of electrons are reconstructed for events with primary energy above 10 eV. In addition, the experiment consists of different detector setups for measuring muons at various energy thresholds between 230 MeV and 2.4 GeV. These informations are used to estimate the muon shower size as well as observables sensitive to differences of hadronic interaction models embedded in shower simulation codes. We report the goals and the status of the different muon measurements at KASCADE-Grande.

  11. History and environmental setting of the Grand Calumet River

    USGS Publications Warehouse

    Nevers, Meredith Becker; Whitman, Richard L.; Gerovac, Paul J.

    2002-01-01

    The Grand Calumet River lies in an area of great ecological diversity, a result of the convergence of three biomes during glaciation. Over thousands of years the region and the river have changed ecologically due to ice retreat, lake level declines, settlement and industrialization. Settlement and industrialization have greatly accelerated the rate of change, and the Grand Calumet River and its basin are now subject to the added effects of years of direct pollution. For years, industries directly discharged into the waterway; and those contaminants remain locked in the sediment a century later. In order to preserve the remaining surrounding natural areas and to improve the Grand Calumet River, buried contaminants would have to be dredged from the river. Restoration needs to be implemented as part of the clean-up process, and recontamination should be prevented.

  12. 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.

  13. 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

  14. Grand Minima: Is The Sun Going To Sleep?

    NASA Astrophysics Data System (ADS)

    Mcintosh, S. W.; Leamon, R. J.

    2014-12-01

    We explore recent observational work which indicate that the energetics of the sun's outer atmosphere have been on a steady decline for the past decade and perhaps longer. Futher, we show that new investigations into evolution of the Sun's global magnetic activity appear to demonstrate a path through which the Sun can go into, and exit from, a grand activity minimum without great difficulty while retaining an activity cycle - only losing sunspots. Are we at the begining of a new grand(-ish) minimum? Naturally, only time will tell, but the observational evidence hint that one may not be far off to what impact on the Sun-Earth Connection.

  15. 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.

  16. 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

  17. Grand potential in thermodynamics of solid bodies and surfaces.

    PubMed

    Rusanov, A I; Shchekin, A K; Tatyanenko, D V

    2009-10-28

    Using the chemical potential of a solid in a dissolved state or the corresponding component of the chemical potential tensor at equilibrium with the solution, a new concept of grand thermodynamic potential for solids has been suggested. This allows generalizing the definition of Gibbs' quantity sigma (surface work often called the solid-fluid interfacial free energy) at a planar surface as an excess grand thermodynamic potential per unit surface area that (1) does not depend on the dividing surface location and (2) is common for fluids and solids. PMID:19894916

  18. Grand potential in thermodynamics of solid bodies and surfaces

    NASA Astrophysics Data System (ADS)

    Rusanov, A. I.; Shchekin, A. K.; Tatyanenko, D. V.

    2009-10-01

    Using the chemical potential of a solid in a dissolved state or the corresponding component of the chemical potential tensor at equilibrium with the solution, a new concept of grand thermodynamic potential for solids has been suggested. This allows generalizing the definition of Gibbs' quantity σ (surface work often called the solid-fluid interfacial free energy) at a planar surface as an excess grand thermodynamic potential per unit surface area that (1) does not depend on the dividing surface location and (2) is common for fluids and solids.

  19. Ecological potential of the Grand Calumet River basin

    USGS Publications Warehouse

    Whitman, Richard L.; Nevers, Meredith Becker; Hammann, Shira; Moy, Philip B.

    2002-01-01

    The Grand Calumet River and watershed have been severely degraded by industrialization and urbanization, and yet several high-quality natural areas remain intact. The degraded condition presents numerous opportunities for pollution mitigation and ecosystem restoration. In many areas of the river and watershed, biological communities are characterized by low diversity and pollution-tolerant organisms. By establishing programs of nonnative species control, prescribed burning, sediment removal, wetland establishment and extirpated species re-introduction, the Grand Calumet can be improved to reflect some of its natural history. The dredging plan for the river presents an opportunity to coordinate simultaneous improvement and restoration plans. Possibilities for each section of the river are discussed.

  20. 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)

  1. 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...

  2. 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.

  3. 36 CFR 7.59 - Grand Portage National Monument.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... road which moves across the Grand Portage Trail in NE 1/4, SE 1/4, Section 32, T64N, R6E. (4) Abandoned... Portage Trail in SE 1/4, NW 1/4, Section 25, T64N, R5E. (b) Fishing. Unless otherwise designated,...

  4. 36 CFR 7.59 - Grand Portage National Monument.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... road which moves across the Grand Portage Trail in NE 1/4, SE 1/4, Section 32, T64N, R6E. (4) Abandoned... Portage Trail in SE 1/4, NW 1/4, Section 25, T64N, R5E. (b) Fishing. Unless otherwise designated,...

  5. 36 CFR 7.59 - Grand Portage National Monument.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... road which moves across the Grand Portage Trail in NE 1/4, SE 1/4, Section 32, T64N, R6E. (4) Abandoned... Portage Trail in SE 1/4, NW 1/4, Section 25, T64N, R5E. (b) Fishing. Unless otherwise designated,...

  6. 36 CFR 7.59 - Grand Portage National Monument.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... road which moves across the Grand Portage Trail in NE 1/4, SE 1/4, Section 32, T64N, R6E. (4) Abandoned... Portage Trail in SE 1/4, NW 1/4, Section 25, T64N, R5E. (b) Fishing. Unless otherwise designated,...

  7. 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…

  8. France's grandes écoles accused of elitism

    NASA Astrophysics Data System (ADS)

    Hellemans, Alexander

    2010-02-01

    Physicists in France have backed government plans to open up the country's elite grandes écoles to more students from poorer backgrounds. The government wants to allow up to 30% of students to be given free scholarships in an attempt to broaden the social mix of the student body. The physicists say this would not lead to a lowering of standards.

  9. 75 FR 32359 - Upper Rio Grande Resource Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-08

    ... of meeting. SUMMARY: The Upper Rio Grande Resource Advisory Committee will meet in South Fork... to hold the first meeting of the newly formed committee. DATES: The meeting will be held on June 22, 2010, and will begin at 1 p.m. ADDRESSES: The meeting will be held at the South Fork Community...

  10. Accelerating scientific discovery by formulating grand scientific challenges

    NASA Astrophysics Data System (ADS)

    Helbing, D.

    2012-11-01

    One important question for science and society is how to best promote scientific progress. Inspired by the great success of Hilbert's famous set of problems, the FuturICT project tries to stimulate and focus the efforts of many scientists by formulating Grand Challenges, i.e. a set of fundamental, relevant and hardly solvable scientific questions.

  11. 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…

  12. 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...

  13. 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

  14. 150. VERTICAL VIEW TO CEILING OF GRAND STAIR HALL Copy ...

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

    150. VERTICAL VIEW TO CEILING OF GRAND STAIR HALL Copy photograph of photogrammetric plate LC-HABS-GS13-B-1977-417R. - Villard Houses, 451-457 Madison Avenue & 24 East Fifty-first Street, New York, New York County, NY

  15. [Landscape ecology of hantavirosis in Rio Grande do Sul state].

    PubMed

    Henkes, Waldir E; Barcellos, Christovam

    2004-01-01

    The aim of this work was to study the landscape ecology of hantavirosis in Rio Grande do Sul state, Brazil. This was achieved through geocoding the occurrence of cases and overlaying onto vegetation and relief maps. The majority of cases occurred during Spring, in highland areas dominated by secondary vegetation and agricultural activity. PMID:15765604

  16. 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…

  17. 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...

  18. 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...

  19. 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.

  20. 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…

  1. 27 CFR 9.129 - Arroyo Grande Valley.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ..., NE, California,” edition of 1965, photorevised 1978. (2) “Tar Spring Ridge, California,” edition of 1967. (3) “Nipomo, California,” edition of 1965. (4) “Oceano, California,” edition of 1965... County in the State of California. The boundary is as follows: (1) Beginning on the “Arroyo Grande”...

  2. 27 CFR 9.129 - Arroyo Grande Valley.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ..., NE, California,” edition of 1965, photorevised 1978. (2) “Tar Spring Ridge, California,” edition of 1967. (3) “Nipomo, California,” edition of 1965. (4) “Oceano, California,” edition of 1965... County in the State of California. The boundary is as follows: (1) Beginning on the “Arroyo Grande”...

  3. 27 CFR 9.129 - Arroyo Grande Valley.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ..., NE, California,” edition of 1965, photorevised 1978. (2) “Tar Spring Ridge, California,” edition of 1967. (3) “Nipomo, California,” edition of 1965. (4) “Oceano, California,” edition of 1965... County in the State of California. The boundary is as follows: (1) Beginning on the “Arroyo Grande”...

  4. Recent Results from KASCADE-Grande and LOPES

    NASA Astrophysics Data System (ADS)

    Kascade-Grande; Lopes Collaboration; Kampert, K.-H.; Apel, W. D.; Arteaga, J. C.; Asch, T.; Badea, F.; Bähren, L.; Bekk, K.; Bertaina, M.; Biermann, P. L.; Blümer, J.; Bozdog, H.; Brancus, I. M.; Brüggemann, M.; Buchholz, P.; Buitink, S.; Cantoni, E.; Chiavassa, A.; Cossavella, F.; Daumiller, K.; de Souza, V.; di Pierro, F.; Doll, P.; Ender, M.; Engel, R.; Engler, J.; Falcke, H.; Finger, M.; Fuhrmann, D.; Gemmeke, H.; Ghia, P. L.; Gils, H. J.; Glasstetter, R.; Grupen, C.; Haungs, A.; Heck, D.; Hörandel, J. R.; Horneffer, A.; Huege, T.; Isar, P. G.; Kang, D.; Kickelbick, D.; Klages, H. O.; Kolotaev, Y.; Krömer, O.; Kuijpers, J.; Lafebre, S.; Link, K.; ?uczak, P.; Ludwig, M.; Mathes, H. J.; Mayer, H. J.; Milke, J.; Melissas, M.; Mitrica, B.; Morello, C.; Navarra, G.; Nehls, S.; Nigl, A.; Oehlschläger, J.; Ostapchenko, S.; Over, S.; Palmieri, N.; Petcu, M.; Pierog, T.; Rautenberg, J.; Rebel, H.; Roth, M.; Saftoiu, A.; Schieler, H.; Schmidt, A.; Schröder, F.; Sima, O.; Singh, K.; Stümpert, M.; Toma, G.; Trinchero, G.; Ulrich, H.; Walkowiak, W.; Weindl, A.; Wochele, J.; Wommer, M.; Zabierowski, J.; Zensus, J. A.; KASCADE-Grande and LOPES Collaboration

    2009-05-01

    KASCADE-Grande is an extensive air-shower experiment located at Forschungszentrum Karlsruhe, Germany. Main parts of the experiment are the Grande array spread over an area of 700×700 m, the original KASCADE array covering 200×200 m with unshielded and shielded detectors, and additional muon tracking devices. This multi-detector system allows to investigate the energy spectrum, composition, and anisotropies of cosmic rays in the energy range up to 1 EeV. LOPES is co-located at the same site to measure radio pulses from extensive air showers in coincidence with KASCADE-Grande. It consists of 30 digital antennas operated in different geometrical configurations. Read out is performed at high bandwidths and rate data processing with the aim to calibrate the emitted signal in the primary energy range of 10-10 eV by making use of reconstructed air-shower observables of KASCADE-Grande. An overview on the performance of both experiments will be given and recent analysis results be reported.

  5. 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

  6. 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.

  7. 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…

  8. 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…

  9. 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…

  10. Capabilities, programs, and economic benefits. [Grand Junction Projects Office

    SciTech Connect

    Not Available

    1990-01-01

    This document describes the activities and impacts of DOE's Grand Junction Project Office. Included are historical accounts of past programs, brief descriptions of current research and services, and evaluations of the economic effects of the facility on the local community and the state of Colorado. 16 figs., 5 tabs. (KJD)

  11. 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...

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

    SciTech Connect

    Hallock, K.A.; Mazurek, M.A. ); Cass, G.R. . 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.

  13. 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

  14. 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…

  15. 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.

  16. 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…

  17. 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...

  18. 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

  19. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Park. The National Park Service reserves the right to limit the number of such permits issued, or the... 36 Parks, Forests, and Public Property 1 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...

  20. 36 CFR 7.4 - Grand Canyon National Park.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Park. The National Park Service reserves the right to limit the number of such permits issued, or the... 36 Parks, Forests, and Public Property 1 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...

  1. 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...

  2. '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, ...

  3. A Model for a Grand Theory: Creativity in Art.

    ERIC Educational Resources Information Center

    McWhinnie, Harold J.

    This paper presents a collection of thoughts and observations about a grand theory of creativity in the arts. The theory elaborated in the paper is based upon the following five major bodies of psychological knowledge and research: (1) hemisphere differences and cerebral lateralization; (2) chemical balance in the brain and bipolar factors; (3)…

  4. 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

  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. 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

    ... Service, Grand Canyon National Park, Grand Canyon, AZ AGENCY: National Park Service, Interior. ACTION... the U.S. Department of the Interior, National Park Service, Grand Canyon National Park, Grand Canyon, AZ. The human remains were removed from within the boundary of Grand Canyon National Park,...

  8. Llano Grande Center's Oral History Project Sparks Cultural and Economic Renewal in Texas's Rio Grande Valley. Rural Trust Featured Project.

    ERIC Educational Resources Information Center

    Null, Elizabeth Higgins

    The Llano Grande Center for Research and Development started as an oral history experiment in two of Texas's poorest school districts. Since the 1920s, when this arid region in the southernmost tip of Texas was first transformed into the orchards and farmlands of the "Magic Valley," workers of Mexican descent have worked the land. Over time,…

  9. Sedimentology and stratigraphy of the Palisades, Lower Comanche, and Arroyo Grande areas of the Colorado River Corridor, Grand Canyon, Arizona

    USGS Publications Warehouse

    Draut, Amy E.; Rubin, David M.; Dierker, Jennifer L.; Fairley, Helen C.; Griffiths, Ronald E.; Hazel, Joseph E., Jr.; Hunter, Ralph E.; Kohl, Keith; Leap, Lisa M.; Nials, Fred L.; Topping, David J.; Yeatts, Michael

    2005-01-01

    This report analyzes various depositional environments in three archaeologically significant areas of the Colorado River corridor in Grand Canyon. Archaeological features are built on and buried by fluvial, aeolian, and locally derived sediment, representing a complex interaction between geologic and cultural history. These analyses provide a basis for determining the potential influence of Glen Canyon Dam operations on selected archaeological sites and thus for guiding dam operations in order to facilitate preservation of cultural resources. This report presents initial results of a joint effort between geologists and archaeologists to evaluate the significance of various depositional processes and environments in the prehistoric formation and modern preservation of archaeological sites along the Colorado River corridor in Grand Canyon National Park. Stratigraphic investigations of the Palisades, Lower Comanche, and Arroyo Grande areas of Grand Canyon yield detailed information regarding the sedimentary history at these locations. Reconstruction of past depositional settings is critical to a thorough understanding of the geomorphic and stratigraphic evolution of these three archaeologically significant areas. This examination of past sedimentary environments allows the relative significance of fluvial, aeolian, debris-fan, and slope-wash sedimentary deposits to be identified at each site. In general the proportion of fluvial sediment (number and thickness of flood deposits) is shown to decrease away from the river, and locally derived sediment becomes more significant. Flood sequences often occur as 'couplets' that contain a fluvial deposit overlain by an interflood unit that reflects reworking of fluvial sediment at the land surface by wind and local runoff. Archaeological features are built on and buried by sediment of various depositional environments, implying a complex interaction between geologic and cultural history. Such field analysis, which combines geological and archaeological information and techniques, can provide a basis for future determination of the effects of Glen Canyon Dam operations on selected areas of the river corridor. This knowledge is essential to the development of preservation strategies for cultural resources in Grand Canyon.

  10. "U.S. Reclamation Service Grand River Dam details of piers 'D' ...

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

    "U.S. Reclamation Service Grand River Dam details of piers 'D' & 'F,' Oct. 25, 1914." - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  11. 75 FR 11938 - Meridian Automotive Systems, Grand Rapids, MI; Notice of Termination of Investigation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-12

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF LABOR Employment and Training Administration Meridian Automotive Systems, Grand Rapids, MI; Notice of Termination... Meridian Automotive Systems, Grand Rapids, Michigan (Meridian Automotive). The petitioning group of...

  12. 75 FR 61173 - Jackson Hole Airport Agreement Extension, Final Environmental Impact Statement, Grand Teton...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-04

    ... National Park Service Jackson Hole Airport Agreement Extension, Final Environmental Impact Statement, Grand... of Availability of the Final Environmental Impact Statement for the Jackson Hole Airport Agreement... Impact Statement for the Jackson Hole Airport Agreement Extension, Grand Teton National Park,...

  13. 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.

  14. 77 FR 8275 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-14

    ... land in the Rio Grande Natural Area, as directed by law. Planned agenda topics include: discussing... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet...

  15. 78 FR 69127 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-18

    ... plan for non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land... Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as indicated...

  16. 77 FR 41798 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-16

    ...-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this meeting... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet...

  17. 77 FR 66479 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-05

    ...-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this meeting... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet...

  18. 76 FR 73657 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-29

    ... land in the Rio Grande Natural Area, as directed by law. Planned agenda topics include: Discussing... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management ] (BLM) Rio Grande Natural Area Commission will meet...

  19. 78 FR 52783 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-26

    ... plan for non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land... Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as indicated...

  20. 78 FR 25097 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-29

    ... non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land... Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as indicated...

  1. 77 FR 21584 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-10

    ... land in the Rio Grande Natural Area, as directed by law. Planned agenda topics include: Further... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet...

  2. 76 FR 55416 - Notice of Meeting, Rio Grande Natural Area Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-07

    ... relating to non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics... Bureau of Land Management Notice of Meeting, Rio Grande Natural Area Commission AGENCY: Bureau of Land.... Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet...

  3. 78 FR 33016 - Proposed Amendment of Class D Airspace; Grand Forks AFB, ND

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-03

    ... Federal Aviation Administration 14 CFR Part 71 Proposed Amendment of Class D Airspace; Grand Forks AFB, ND...: This action proposes to amend Class D airspace at Grand Forks Air Force Base (AFB), Grand Forks, ND... Federal Regulations (14 CFR), part 71 by amending Class D airspace to reflect removal of the...

  4. 40 CFR 81.83 - Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 17 2011-07-01 2011-07-01 false Albuquerque-Mid Rio Grande Intrastate... Designation of Air Quality Control Regions § 81.83 Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region. The Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region (New Mexico) is revised...

  5. 40 CFR 81.83 - Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 18 2012-07-01 2012-07-01 false Albuquerque-Mid Rio Grande Intrastate... Designation of Air Quality Control Regions § 81.83 Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region. The Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region (New Mexico) is revised...

  6. 40 CFR 81.83 - Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 18 2014-07-01 2014-07-01 false Albuquerque-Mid Rio Grande Intrastate... Designation of Air Quality Control Regions § 81.83 Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region. The Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region (New Mexico) is revised...

  7. 40 CFR 81.83 - Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 18 2013-07-01 2013-07-01 false Albuquerque-Mid Rio Grande Intrastate... Designation of Air Quality Control Regions § 81.83 Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region. The Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region (New Mexico) is revised...

  8. 40 CFR 81.83 - Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Albuquerque-Mid Rio Grande Intrastate... Designation of Air Quality Control Regions § 81.83 Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region. The Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region (New Mexico) is revised...

  9. 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

    ... Energy Regulatory Commission Grand Valley Irrigation Company; Notice of Application Accepted for Filing.... Date filed: March 26, 2012. d. Applicant: Grand Valley Irrigation District. e. Name of Project... on the Grand Valley Irrigation Canal where the Mainline canal splits into the Highline and the...

  10. 76 FR 6517 - San Luis & Rio Grande Railroad-Petition for a Declaratory Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-04

    ... Surface Transportation Board San Luis & Rio Grande Railroad--Petition for a Declaratory Order AGENCY... INFORMATION: In response to a petition filed by San Luis & Rio Grande Railroad (SLRG), the Board instituted a.... See San Luis & Rio Grande R.R.--Petition for a Declaratory Order, FD 35380 (STB served Aug. 12,...

  11. Collaborative care for children: a grand rounds presentation.

    PubMed

    Foley, Michele; Dunbar, Nancy; Clancy, Jeanne

    2014-08-01

    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 school nurses. The program highlighted care of urban children with one of two chronic diseases, type 1 diabetes or asthma. Although the treatment and care of both these chronic childhood illnesses vary greatly, it is evident that primary care providers, school nurses, and students can benefit from increased collaboration, communication, and understanding of each other's roles. The partnerships were developed in an effort to overcome health care disparities that can and do exist in urban school districts such as Springfield, MA. In this commentary, we discuss important outcomes that resulted from the joint presentation at grand rounds. PMID:23553624

  12. 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.

  13. City of Grand Rapids Building Solar Roof Demonstration

    SciTech Connect

    DeClercq, Mark; Martinez, Imelda

    2012-08-31

    Grand Rapids, Michigan is striving to reduce it environmental footprint. The municipal government organization has established environmental sustainability policies with the goal of securing 100% of its energy from renewable sources by 2020. This report describes the process by which the City of Grand Rapids evaluated, selected and installed solar panels on the Water/Environmental Services Building. The solar panels are the first to be placed on a municipal building. Its new power monitoring system provides output data to assess energy efficiency and utilization. It is expected to generate enough clean solar energy to power 25 percent of the building. The benefit to the public includes the economic savings from reduced operational costs for the building; an improved environmentally sustainable area in which to live and work; and increased knowledge about the use of solar energy. It will serve as a model for future energy saving applications.

  14. Cholera Outbreak in Grande Comore: 1998–1999

    PubMed Central

    Troeger, Christopher; Gaudart, Jean; Truillet, Romain; Sallah, Kankoe; Chao, Dennis L.; Piarroux, Renaud

    2016-01-01

    In 1998, a cholera epidemic in east Africa reached the Comoros Islands, an archipelago in the Mozambique Channel that had not reported a cholera case for more than 20 years. In just a little over 1 year (between January 1998 and March 1999), Grande Comore, the largest island in the Union of the Comoros, reported 7,851 cases of cholera, about 3% of the population. Using case reports and field observations during the medical response, we describe the epidemiology of the 1998–1999 cholera epidemic in Grande Comore. Outbreaks of infectious diseases on islands provide a unique opportunity to study transmission dynamics in a nearly closed population, and they may serve as stepping-stones for human pathogens to cross unpopulated expanses of ocean. PMID:26572869

  15. Light threshold effects in supersymmetric grand unified theories

    SciTech Connect

    Faraggi, A.E.; Grinstein, B.

    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.

  16. Cholera Outbreak in Grande Comore: 1998-1999.

    PubMed

    Troeger, Christopher; Gaudart, Jean; Truillet, Romain; Sallah, Kankoe; Chao, Dennis L; Piarroux, Renaud

    2016-01-01

    In 1998, a cholera epidemic in east Africa reached the Comoros Islands, an archipelago in the Mozambique Channel that had not reported a cholera case for more than 20 years. In just a little over 1 year (between January 1998 and March 1999), Grande Comore, the largest island in the Union of the Comoros, reported 7,851 cases of cholera, about 3% of the population. Using case reports and field observations during the medical response, we describe the epidemiology of the 1998-1999 cholera epidemic in Grande Comore. Outbreaks of infectious diseases on islands provide a unique opportunity to study transmission dynamics in a nearly closed population, and they may serve as stepping-stones for human pathogens to cross unpopulated expanses of ocean. PMID:26572869

  17. Tactful accretion: considering constraints in the Grand Tack model

    NASA Astrophysics Data System (ADS)

    Jacobson, Seth; Morbidelli, Alessandro; O'Brien, David; Walsh, Kevin; Raymond, Sean

    2013-07-01

    The inward and outward migration of Jupiter and Saturn, the Grand Tack, creates a truncated disk of embryos and planetesimals. The evolution of this disk broadly reproduces the terrestrial planets including a small Mars. Expanding from Walsh et al. (2011), we use N-body simulations to explore a variety of oligarchic growth regimes in the inner Solar System by adjusting the following parameters. (1) The mass of the initial embryos, if the oligarchic growth process is more efficient or the growth period is longer before interruption by the Grand Tack, then more massive embryos are created. (2) The ratio of the amount of mass in embryos to the mass in planetesimals. The amount of total mass in embryos relative to the total mass in planetesimals is possibly a reflection of the severity of collisional grinding during the oligarchic growth phase (Levison DPS 2012). More severe collisional grinding increases the mass in embryos relative to planetesimals.

  18. Departure from Weinberg-Salem model and Grand Unification

    SciTech Connect

    Deshpande, N.G.

    1980-05-01

    The spontaneous symmetry breakdown of Grand Unified Groups like SO(10) can lead to an extra U(1) group beyond the SU(2) x U(1) of Weinberg-Salam. The neutral current data in such models could depend on three new parameters beyond the two in the standard model. However, grand unification imposes restriction on coupling constants limiting the analysis to two new parameters. Further, only one new parameter occurs in neutrino-scattering data. More accurate data can thus be used in the future to set limits on these parameters. The present data when used with the more general parametrization no longer determines the value of sin/sup 2/ theta/sub w/ as accurately. This leads to a greater uncertainty in the estimate of the proton lifetime.

  19. US DOE Grand Challenge in Computational Accelerator Physics

    SciTech Connect

    Ryne, R.; Habib, S.; Qiang, J.; Ko, K.; Li, Z.; McCandless, B.; Mi, W.; Ng, C.; Saparov, M.; Srinivas, V.; Sun, Y.; Zhan, X.; Decyk, V.; Golub, G.

    1998-03-01

    Particle accelerators are playing an increasingly important role in basic and applied science, and are enabling new accelerator-driven technologies. But the design of next-generation accelerators, such as linear colliders and high intensity linacs, will require a major advance in numerical modeling capability due to extremely stringent beam control and beam loss requirements, and the presence of highly complex three-dimensional accelerator components. To address this situation, the U.S. Department of Energy has approved a ''Grand Challenge'' in Computational Accelerator Physics, whose primary goal is to develop a parallel modeling capability that will enable high performance, large scale simulations for the design, optimization, and numerical validation of next-generation accelerators. In this paper we report on the status of the Grand Challenge.

  20. Clinical Immersion and Biomedical Engineering Design Education: "Engineering Grand Rounds".

    PubMed

    Walker, Matthew; Churchwell, André L

    2016-03-01

    Grand Rounds is a ritual of medical education and inpatient care comprised of presenting the medical problems and treatment of a patient to an audience of physicians, residents, and medical students. Traditionally, the patient would be in attendance for the presentation and would answer questions. Grand Rounds has evolved considerably over the years with most sessions being didactic-rarely having a patient present (although, in some instances, an actor will portray the patient). Other members of the team, such as nurses, nurse practitioners, and biomedical engineers, are not traditionally involved in the formal teaching process. In this study we examine the rapid ideation in a clinical setting to forge a system of cross talk between engineers and physicians as a steady state at the praxis of ideation and implementation. PMID:26857015

  1. Los grandes telescopios ópticos e infrarrojos

    NASA Astrophysics Data System (ADS)

    Rodríguez-Espinosa, J. M.

    Recientemente se han puesto en funcionamiento telescopios de 8 y 10 metros de diámetro de su espejo primario que están significando un gran avance en las capacidades observacionales de la Astronomía moderna. Igualmente en nuestro país se está construyendo el Gran Telescopio de Canarias (GTC) que situará a la Astronomía española en la vanguardia de esta disciplina. En mi charla hablaré de las oportunidades observacionales que suponen estos grandes telescopios para la Astronomía moderna. Hablaré del GTC y del esfuerzo español por ser actores principales del desarrollo de la Astronomía moderna. Por último, mostraré brevemente los proyectos futuros de grandes telescopios que se están proponiendo a ambos lados del Atlántico.

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

    SciTech Connect

    Onjukka, Sam T.; Harbeck, Jim

    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.

  3. 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.

  4. Shoreline evolution from 1945 to 1988 at Grand Isle, Louisiana

    SciTech Connect

    Bencaz, C.A.; Birdseye, R.U. )

    1990-09-01

    Louisiana is losing over 55 mi{sup 2} of its coast annually owing to natural processes and many forms of human intervention. Sand bodies are especially impacted in the Mississippi Delta Plain where Grand Isle, the state's only inhabited barrier island, is located. Trends in erosion and deposition on Grand Isle were evaluated using aerial photographs acquired in 1945, 1949, 1956, 1958, 1963, 1964, 1965, 1966, 1971, 1976, 1978, 1982, 1986, and 1988. Shoreline changes in 14 different zones on the island were calculated for each set of aerial photographs and summarized on maps and in tables. Geological interpretations, meteorological data, and historical records helped to explain the patterns of change. The major factors contributing to shoreline changes at Grand Isle are: (1) The nature of the unprotected sediments forming the margins of the island. Unstabilized shorelines include slopes composed largely of sand, tidal marsh, sand and shell beaches, and recently dredged fill. (2) Shoreline orientation with respect to wave fetch, prevailing wind directions, and approaching storms. (3) Duration and magnitude of major storms. (4) Local weather, along with regional and worldwide climate. (5) Relative sea-level rise, owing to subsidence of the Mississippi Delta Plain sediments from compaction, consolidation, and isostatic adjustment, as well as to a currently rising global sea level. The rate of relative sea level rise at Grand Isle averages 0.41 in./year. (6) Sediment deprivation, largely owing to human influences such as dams, reservoirs, artificial levees, and control structures located in the Mississippi drainage basin, alluvial valley, and delta plain. (7) Disruption of longshore drift by construction and orientation of jetties, groins, and breakwaters. (8) Beach nonfishment and marsh infilling by humans.

  5. 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.

  6. Mosquitoes of Grand Teton National Park, Teton County, Wyoming, USA.

    PubMed

    Moore, J P

    2001-12-01

    An inventory of the mosquitoes of Grand Teton National Park and the John D. Rockefeller, Jr. Memorial Parkway was conducted during 1998 and 2000. Twenty-five culicid species belonging to 3 genera and 5 subgenera were recorded. This is the 1st substantive effort to record the mosquito fauna of this national park since its establishment in 1929. Collection of specimens of Ochlerotatus communis and Ochlerotatus nevadensis from the same larval site supports the species status of Oc. nevadensis. PMID:11804462

  7. 6-arm blue grand design of NGC 309

    NASA Astrophysics Data System (ADS)

    Chernin, A. D.

    The geometry and physics of the spiral structure of the giant Hubble type Sc galaxy NGC 309 is studied. A schematic of two patterns with three arms in each is suggested for the blue spiral. The red and blue patterns form together a grand design with two- fold symmetry. A possible gas-dynamics explanation of the phenomenon is suggested which shows how the two-arm red spiral may induce the formation of the six-arm coherent blue spiral.

  8. Migrant Worker: A Boy from the Rio Grande Valley.

    ERIC Educational Resources Information Center

    Hoyt-Goldsmith, Diane

    Ricky is an 11-year-old migrant worker. During the summer, he travels with his family from their home in Rio Grande City, Texas, to farms farther north. There they spend 10-12 hours a day in the hot sun picking fruit and vegetables and packing the harvest for market. Ricky is not protected by the federal laws that govern the hours, wages, and…

  9. 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

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

    SciTech Connect

    Onjukka, Sam T.; Harbeck, Jim

    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.

  11. Outer planets grand tours: Planetary radio astronomy team report

    NASA Technical Reports Server (NTRS)

    Warwick, J. W.

    1972-01-01

    Requirements related to scientific observations of planetary radio emissions during outer planets grand tours are discussed. Observations at low frequencies where non-thermal cooperative plasma phenomena play a major role are considered for determining dynamical processes and magnetic fields near a planet. Magnetic field measurements by spacecraft magnetometers, and by radio receivers in their harmonic modes are proposed for interpretation of planetary radio emission.

  12. Deciphering Solar Magnetic Activity: On Grand Minima in Solar Activity

    NASA Astrophysics Data System (ADS)

    Mcintosh, Scott; Leamon, Robert

    2015-07-01

    The Sun provides the energy necessary to sustain our existence. While the Sun provides for us, it is also capable of taking away. The weather and climatic scales of solar evolution and the Sun-Earth connection are not well understood. There has been tremendous progress in the century since the discovery of solar magnetism - magnetism that ultimately drives the electromagnetic, particulate and eruptive forcing of our planetary system. There is contemporary evidence of a decrease in solar magnetism, perhaps even indicators of a significant downward trend, over recent decades. Are we entering a minimum in solar activity that is deeper and longer than a typical solar minimum, a "grand minimum"? How could we tell if we are? What is a grand minimum and how does the Sun recover? These are very pertinent questions for modern civilization. In this paper we present a hypothetical demonstration of entry and exit from grand minimum conditions based on a recent analysis of solar features over the past 20 years and their possible connection to the origins of the 11(-ish) year solar activity cycle.

  13. Integrating electrodermal biofeedback into pharmacologic treatment of grand mal seizures

    PubMed Central

    Scrimali, Tullio; Tomasello, Damiana; Sciuto, Massimo

    2015-01-01

    Electrodermal activity (EDA) and electrodermal biofeedback, when integrated with pharmacologic treatments, indicate promising methods for the treatment of grand mal seizures. They can be used to monitor patient arousal and help patients learn new strategies to better cope with stress and anxiety. Our proposed method can possibly reduce the number of crises for patients who are dependent on pharmacologic therapy and can improve their quality of life. This article describes the scientific background of electrodermal monitoring and electrodermal biofeedback for patients affected by grand mal seizures. In this study, we have reported a clinical case study. The patient was treated for 2 years with electrodermal biofeedback to augment pharmacologic treatments. The trial has been designed in accordance with “n = 1 case study research”. Our results have shown that our methods could achieve a significant reduction in grand mal seizures and sympathetic arousal when applied. The patient under consideration was also relaxed and exhibited greater competency to cope with stress. Additionally, the patient’s sense of mastery and self-efficacy was enhanced. PMID:26029078

  14. Star formation in grand design and flocculent spiral galaxies

    NASA Technical Reports Server (NTRS)

    Romanishin, W.

    1985-01-01

    An examination is conducted of the colors and neutral hydrogen contents of spiral galaxies which have been classified in the Elmegreen and Elmegreen arm morphology system. Using these data, possible differences between the star formation activity in spiral galaxies with and without classic spiral arms are delineated. At the same revised Hubble type, spiral galaxies with regular global arm patterns (the grand design spirals) are bluer than spiral galaxies lacking such patterns (the flocculent spirals) by a small, but statistically significant amount (approximately 0.05 in B-V and approximately 0.15 in U-V). The neutral hydrogen contents of the two groups are roughly similar, implying the star formation rate averaged over a Hubble time has been approximately the same in grand design and flocculent systems. The color differences can be explained either by using an initial mass function in the flocculent spiral galaxies which is deficient in massive stars by a factor of 2 compared with the grand design systems, or by a decrease of 30 percent in the ratio of recent to past star formation rates in flocculent galaxies. The possibility is discussed that systematic Hubble type misclassifications significantly affect these conclusions.

  15. 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.

  16. Frequency and initiation of debris flows in Grand Canyon, Arizona

    NASA Astrophysics Data System (ADS)

    Griffiths, Peter G.; Webb, Robert H.; Melis, Theodore S.

    2004-12-01

    Debris flows from 740 tributaries transport sediment into the Colorado River in Grand Canyon, Arizona, creating rapids that control its longitudinal profile. Debris flows mostly occur when runoff triggers failures in colluvium by a process termed "the fire hose effect." Debris flows originate from a limited number of geologic strata, almost exclusively shales or other clay-rich, fine-grained formations. Observations from 1984 through 2003 provide a 20 year record of all debris flows that reached the Colorado River in Grand Canyon, and repeat photography provides a 100 year record of debris flows from 147 tributaries. Observed frequencies are 5.1 events/year from 1984 to 2003, and historic frequencies are 5.0 events/year from 1890 to 1983. Logistic regression is used to model historic frequencies based on drainage basin parameters observed to control debris flow initiation and transport. From 5 to 7 of the 16 parameters evaluated are statistically significant, including drainage area, basin relief, and the height of and gradient below debris flow source areas, variables which reflect transport distance and potential energy. The aspect of the river channel, which at least partially reflects storm movement within the canyon, is also significant. Model results are used to calculate the probability of debris flow occurrence at the river over a century for all 740 tributaries. Owing to the variability of underlying geomorphic controls, the distribution of this probability is not uniform among tributaries of the Colorado River in Grand Canyon.

  17. 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.

  18. 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

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

    SciTech Connect

    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).

  20. Microbial contamination and chemical toxicity of the Rio Grande

    PubMed Central

    Mendoza, Jose; Botsford, James; Hernandez, Jose; Montoya, Anna; Saenz, Roswitha; Valles, Adrian; Vazquez, Alejandro; Alvarez, Maria

    2004-01-01

    Background The Rio Grande River is the natural boundary between U.S. and Mexico from El Paso, TX to Brownsville, TX. and is one of the major water resources of the area. Agriculture, farming, maquiladora industry, domestic activities, as well as differences in disposal regulations and enforcement increase the contamination potential of water supplies along the border region. Therefore, continuous and accurate assessment of the quality of water supplies is of paramount importance. The objectives of this study were to monitor water quality of the Rio Grande and to determine if any correlations exist between fecal coliforms, E. coli, chemical toxicity as determined by Botsford's assay, H. pylori presence, and environmental parameters. Seven sites along a 112-Km segment of the Rio Grande from Sunland Park, NM to Fort Hancock, TX were sampled on a monthly basis between January 2000 and December 2002. Results The results showed great variability in the number of fecal coliforms, and E. coli on a month-to-month basis. Fecal coliforms ranged between 0–106 CFU/100 ml while E. coli ranged between 6 to > 2419 MPN. H. pylori showed positive detection for all the sites at different times. Toxicity ranged between 0 to 94% of inhibition capacity (IC). Since values above 50% are considered to be toxic, most of the sites displayed significant chemical toxicity at different times of the year. No significant correlations were observed between microbial indicators and chemical toxicity. Conclusion The results of the present study indicate that the 112-Km segment of the Rio Grande river from Sunland Park, NM to Fort Hancock, TX exceeds the standards for contact recreation water on a continuous basis. In addition, the presence of chemical toxicity in most sites along the 112-Km segment indicates that water quality is an area of concern for the bi-national region. The presence of H. pylori adds to the potential health hazards of the Rio Grande. Since no significant correlation was observed between the presence of H. pylori antigens and the two indicators of fecal contamination, we can conclude that fecal indicators cannot be used to detect the presence of H. pylori reliably in surface water. PMID:15104800

  1. Natural regeneration in two central Idaho grand fir habitat types. Forest Service research paper

    SciTech Connect

    Geier-Hayes, K.

    1994-03-01

    Natural regeneration of five conifer species was surveyed in two central Idaho grand fir habitat types. The habitat types range from warm, dry (grand fir/white spirea) to mesic (Grand fir/Mountain Maple). Four harvest-regeneration methods and four site preparation techniques were sampled. Recommendations for obtaining natural regeneration vary primarily by habitat type. Conifer seedlings in the warm, dry grand fir white spirea habitat type require site protection for establishment. In the mesic grand fir/mountain maple habitat type, tall shrub potential can reduce the opportunity to establish early seral conifer species.

  2. Fostering Scientific Literacy: Establishing Social Relevance via the Grand Challenges

    NASA Astrophysics Data System (ADS)

    Lyford, M. E.; Myers, J. D.; Buss, A.

    2010-12-01

    Numerous studies and polls suggest the general public’s understanding of science and scientific literacy remain woefully inadequate despite repeated calls for improvement over the last 150 years. This inability to improve scientific literacy significantly is a complex problem likely driven by a number of factors. However, we argue that past calls and efforts for improving scientific literacy have failed to: 1) articulate a truly meaningful justification for society to foster a scientifically literate public; 2) provide a rationale that motivates individuals of diverse backgrounds to become scientifically literate; 3) consider the impact of personal perspective, e.g. values, beliefs, attitudes, etc., on learning; and 4) offer a relevant and manageable framework in which to define scientific literacy. For instance, past calls for improving scientific literacy, e.g. the U.S. is behind the Soviets in the space race, U.S students rank below country X in math and science, etc., have lacked justification, personal motivation and a comprehensive framework for defining scientific literacy. In these cases, the primary justification for improving science education and scientific literacy was to regain international dominance in the space race or to advance global standing according to test results. These types of calls also articulate short-term goals that are rendered moot once they have been achieved. At the same time, teaching practices have commonly failed to consider the perspectives students bring to the classroom. Many STEM faculty do not address issues of personal perspective through ignorance or the desire to avoid controversial subjects, e g. evolution, climate change. We propose that the ‘grand challenges’ (e.g., energy, climate change, antibacterial resistance, water, etc.) humankind currently faces provides a compelling framework for developing courses and curricula well-suited for improving scientific literacy. A grand challenge paradigm offers four distinct advantages. First, it defines an enduring and meaningful rationale for society to invest resources in educational programs that promote scientific literacy. Second, it provides an educational context designed to engage individuals and motivate them to learn. Third, the nature of grand challenges provides mechanisms for addressing other affective barriers to individual learning that are commonly associated with controversial science-societal issues. Fourth, a grand challenge approach provides a framework to identify the concepts and processes of science a scientifically literate person should understand. Based on our experiences, we propose grand challenge science literacy (GCSL) courses or curricula are based on two primary foundations: the nature of science and the unifying concepts of science. Complementing this foundation is the science necessary to understand the grand challenge. To illustrate how science can contribute to crafting a just, equitable and sustainable solution, a GCSL course must also incorporate non-STEM perspectives, e.g. economics, politics. Finally, the personal perspectives learners bring to the classroom must be explicitly considered throughout the course.

  3. 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

  4. 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.

  5. The Sun's Magnetic Field During a Grand Minimum of Activity

    NASA Astrophysics Data System (ADS)

    Meyer, Karen; Mackay, Duncan

    2014-06-01

    During a grand minimum of solar activity, no sunspots are observed on the photosphere, but what might the Sun's magnetic field look like? One possibility is that there would be no active regions or larger scale magnetic activity. We have extended our photospheric model for small-scale magnetic flux evolution to cover the full Sun. As an initial study, we consider how the surface magnetic field of the Sun would look if only smaller-scale magnetic features were allowed to emerge. We also consider the resultant coronal and inner heliospheric magnetic fields, and discuss potential consequences of such fields for Earth.

  6. 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.

  7. Aldrin, Cernan and others at ASVC prior to grand opening

    NASA Technical Reports Server (NTRS)

    1997-01-01

    Several Apollo program astronauts, along with their family members and friends, watch a simulation of an Apollo/Saturn V launch in a replica of a Launch Control Center firing room in the new Apollo/Saturn V Center (ASVC) at KSC prior to the gala grand opening ceremony for the facility that was held Jan. 8, 1997. The astronauts were invited to participate in the event, which also featured NASA Administrator Dan Goldin and KSC Director Jay Honeycutt. The ASVC also features several other Apollo program spacecraft component displays and multimedia presentations. The facility will be a part of the KSC bus tour that embarks from the KSC Visitor Center.

  8. 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

  9. 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.

  10. Supersymmetric SO(10) grand unification at the LHC and beyond

    NASA Astrophysics Data System (ADS)

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

    2014-12-01

    We study models of supersymmetric grand unification based on the SO(10) gauge group. We investigate scenarios of non-universal gaugino masses including models containing a mixture of two representations of hidden sector chiral superfields. We analyse the effect of excluding ? from the fine-tuning measure, and confront the results with low energy constraints, including the Higgs boson mass, dark matter relic density and supersymmetry bounds. We also determine high scale Yukawa coupling ratios and confront the results with theoretical predictions. Finally, we present two additional benchmarks that should be explored at the LHC and future colliders.

  11. 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.

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

    SciTech Connect

    Wirth, B.D.

    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.

  13. 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.

  14. Studies of grand minima in sunspot cycles by using a flux transport solar dynamo model

    NASA Astrophysics Data System (ADS)

    Karak, Bidya Binay; Choudhuri, Arnab Rai

    2013-11-01

    We propose that grand minima in solar activity are caused by simultaneous fluctuations in the meridional circulation and the Babcock—Leighton mechanism for the poloidal field generation in the flux transport dynamo model. We present the following results: (a) fluctuations in the meridional circulation are more effective in producing grand minima; (b) both sudden and gradual initiations of grand minima are possible; (c) distributions of durations and waiting times between grand minima seem to be exponential; (d) the coherence time of the meridional circulation has an effect on the number and the average duration of grand minima, with a coherence time of about 30 yr being consistent with observational data. We also study the occurrence of grand maxima and find that the distributions of durations and waiting times between grand maxima are also exponential, like the grand minima. Finally we address the question of whether the Babcock—Leighton mechanism can be operative during grand minima when there are no sunspots. We show that an α-effect restricted to the upper portions of the convection zone can pull the dynamo out of the grand minima and can match various observational requirements if the amplitude of this α-effect is suitably fine-tuned.

  15. Lower Cambrian sedimentary Grand Cycle A in northwestern Canada and southern Nevada-southeastern California

    SciTech Connect

    Fritz, W.H. )

    1993-04-01

    Grand Cycle A is herein restricted by raising the base to a level just above the base of the Sekwi Formation. In ascending order, Grand Cycle A shares the following features in northwestern Canada and southern Nevada-southeastern California: (1) an initial transgression with reduced clastic size, lack of appreciable limestone, and an abrupt faunal change at the Fallotaspis-Nevadella Zone boundary, (2) gradual increase of limestone that is platy and deposited below wave base, (3) biotherms with archaeocyathids or algal buildups, (4) thick succession of shallow water limestone, (5) an abrupt termination of Grand Cycle A at the top of the thick limestone succession. The boundary between the Nevadella Zone and the Bonnia-Olenellus Zone may be at the top of Grand Cycle A or a short distance above in the basal clastics of Grand Cycle B. Grand Cycle A is not considered to be a typical grand cycle, but rather a hybrid that straddles a thermal change. Below are the large, cold water cycles of the Windermere Supergroup. There the clastic half-cycles represent transgression and the carbonate half-cycles regression. Above Grand Cycle A, are warm water, true grand cycles where clastic half-cycles represent regression and the carbonate half-cycles transgression. In Grand Cycle A, both halves represent transgression, with the upper half being a typical warm water limestone.

  16. Gravitational breaking of the grand unified theory group and the grand unified theory{endash}Planck hierarchy

    SciTech Connect

    Urano, S.; Ring, D.; Arnowitt, R.

    1996-05-01

    It is shown that nonrenormalizable gravitational interactions in the Higgs sector of supersymmetric grand unified theories (GUTs) can produce the breaking of the unifying gauge group {ital G} at the GUT scale {ital M}{sub GUT}{approximately}10{sup 16} GeV. Such a breaking offers an attractive alternative to the traditional method where the superheavy GUT scale mass parameters are added {ital ad} {ital hoc} into the theory. The mechanism also offers a natural explanation for the closeness of the GUT breaking scale to the Planck scale. A study of two simple models endowed with this mechanism is presented. {copyright} {ital 1996 The American Physical Society.}

  17. 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.

  18. A Grand Δ(96)×SU(5) Flavour Model

    NASA Astrophysics Data System (ADS)

    King, Stephen F.; Luhn, Christoph; Stuart, Alexander J.

    2013-02-01

    Recent results from the Daya Bay and RENO reactor experiments have measured the smallest lepton mixing angle and found it to have a value of θ13≈9°. This result presents a new challenge for the existing paradigms of discrete flavour symmetries which attempt to describe all quark and lepton masses and mixing angles. Here we propose a Supersymmetric Grand Unified Theory of Flavour based on Δ(96)×SU(5), together with a U(1)×Z3 symmetry, including a full discussion of Δ(96) in a convenient basis. The Grand Δ(96)×SU(5) Flavour Model relates the quark mixing angles and masses in the form of the Gatto-Sartori-Tonin relation and realises the Georgi-Jarlskog mass relations between the charged leptons and down-type quarks. We predict a Bi-trimaximal (not Tri-bimaximal) form of neutrino mixing matrix, which, after including charged lepton corrections with zero phase, leads to the following GUT scale predictions for the atmospheric, solar, and reactor mixing angles: θ23≈36.9°, θ12≈32.7° and θ13≈9.6°, in good agreement with recent global fits, and a zero Dirac CP phase δ≈0.

  19. Assessing transboundary influences in the lower Rio Grande Valley

    SciTech Connect

    Mukerjee, S.; Shadwick, D.S.; Dean, K.E.; Carmichael, L.Y.

    1999-07-01

    The Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was a US-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 direct impact of local sources and transboundary transport. Ambient data included particulate mass and elemental composition, VOCs, PAHs, pesticides, and meteorology. Also, near real-time, PM{sub 2.5} mass measurements captured potential pollutant plume events occurring over 1-h periods. Data collected were compared to screening levels and other monitoring data to assess general air pollution impacts on nearby border communities. Wind sector analyses, chemical tracer analyses, principal component analyses, and other techniques were used to assess the extent of transboundary transport of air pollutants and identify possible transboundary air pollution sources. Overall, ambient levels were comparable to or lower than other urban and rural areas in Texas and elsewhere. Movement of air pollution across the border did not appear to cause noticeable deterioration of air quality on the US side of the Lower Rio Grande Valley. Dominant southeasterly winds from the Gulf of Mexico were largely responsible for the clean air conditions in the Brownsville airshed. Few observations of pollutants exceeded effects screening levels, almost all being VOCs; these appeared to be due to local events and immediate influences, not regional phenomena or persistent transboundary plumes.

  20. Geomorphology of plutonium in the Northern Rio Grande

    SciTech Connect

    Graf, W.L.

    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.

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

    NASA Astrophysics Data System (ADS)

    Pati, Jogesh C.

    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 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)L × SU(2)R × SU(4)c or SO(10) symmetry in 4D in explaining (i) observed neutrino oscillations, (ii) baryogenesis via leptogenesis, and (iii) 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 ? ? e?, ? ? ??, 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.

  2. 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.

  3. Grand canonical Monte Carlo simulations of water in protein environments

    NASA Astrophysics Data System (ADS)

    Woo, Hyung-June; Dinner, Aaron R.; Roux, Benoît

    2004-10-01

    The grand canonical simulation algorithm is considered as a general methodology to sample the configuration of water molecules confined within protein environments. First, the probability distribution of the number of water molecules and their configuration in a region of interest for biochemical simulations, such as the active site of a protein, is derived by considering a finite subvolume in open equilibrium with a large system serving as a bulk reservoir. It is shown that the influence of the bulk reservoir can be represented as a many-body potential of mean force acting on the atoms located inside the subvolume. The grand canonical Monte Carlo (GCMC) algorithm, augmented by a number of technical advances to increase the acceptance of insertion attempts, is implemented, and tested for simple systems. In particular, the method is illustrated in the case of a pure water box with periodic boundary conditions. In addition, finite spherical systems of pure water and containing a dialanine peptide, are simulated with GCMC while the influence of the surrounding infinite bulk is incorporated using the generalized solvent boundary potential [W. Im, S. Bernèche, and B. Roux, J. Chem. Phys. 114, 2924 (2001)]. As a last illustration of water confined in the interior of a protein, the hydration of the central cavity of the KcsA potassium channel is simulated.

  4. SO(10) grand unified theories with dynamical Yukawa couplings

    NASA Astrophysics Data System (ADS)

    Aulakh, Charanjit S.; Khosa, Charanjit K.

    2014-08-01

    Renormalizable SO(10) grand unified theories (GUTs), extended by O(Ng)F family gauge symmetry, generate minimal supersymmetric Standard Model flavor structure dynamically via vacuum expectation values of "Yukawon" Higgs multiplets. For concrete illustration and calculability, we work with the fully realistic minimal supersymmetric GUTs based on the 210?126 ¯?126 GUT Higgs system—which were already parameter counting minimal relative to other realistic models. SO(10) fermion Higgs channels 126 ¯,10(120) extend to symmetric (antisymmetric) representations of O(Ng)F, while 210,126 are symmetric. Ng=3 dynamical Yukawa generation reduces the matter fermion Yukawas from 15 to 3 (21 to 5) without (with) the 120 Higgs. Yukawon GUTs are thus ultraminimal in parameter counting terms. Consistent symmetry breaking is ensured by a hidden sector Bajc-Melfo superpotential with a pair of symmetric O(Ng) multiplets ?,S, of which the latter's singlet part Ss breaks supersymmetry and the traceless part S ^ furnishes flat directions to cancel the O(Ng) D-term contributions of the visible sector. Novel dark matter candidates linked to flavor symmetry arise from both the Bajc-Melfo sector and GUT sector minimal supersymmetric Standard Model singlet pseudo-Goldstones. These relics may be viable light (<50 GeV) cold dark matter as reported by DAMA/LIBRA. In contrast to the new minimal supersymmetric SO(10) grand unified theory (NMSGUT) even sterile neutrinos can appear in certain branches of the flavor symmetry breaking without the tuning of couplings.

  5. 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.

  6. 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.

  7. Legislative Advocacy: Evaluation of a Grand Rounds Intervention for Pediatricians

    PubMed Central

    Bensen, Rachel; Roman, Heidi; Bersamin, Melina; Lu, Yi; Horwitz, Sarah; Chamberlain, Lisa J.

    2015-01-01

    Objective To evaluate the impact of a Grand Rounds Action Alert (GRAA) intervention on the behaviors, knowledge, and attitudes of pediatric grand rounds (GR) attendees; and to assess its acceptability. Methods A cross-sectional, quasi-experimental study was performed at a freestanding children’s hospital. GRAA on child health legislative topics were presented in the first 2 minutes of the pediatric GR session as well as posted outside. Each session included an action item, such as writing/signing letters to elected officials or informational sheets with legislator contact information. Main outcome measures included self-reported behavior, advocacy knowledge, attitudes, and acceptability. Results One year after GRAA implementation, GR attendees with high exposure to the intervention were more likely to have written/signed a letter to a legislator compared to those with low/no exposure (60% vs 35%, P = .016). Those with high exposure were also more knowledgeable regarding financing of health care for low-income children (20%vs 5%, P =.027). Attitudes toward advocacy at baseline were positive: respondents agreed it is important to remain informed about (98%) and advocate for (94%) legislation favorable to children’s health. Implementing this program was challenging, but the intervention was accepted favorably: 93% of respondents agreed that GRAA should continue. Conclusions GRAA facilitated participation in legislative advocacy behaviors while improving self-perceived knowledge of legislative issues relating to children’s health. They were well received in a large tertiary children’s hospital. PMID:24126045

  8. Measurement and reproduction accuracy of computer-controlled grand pianos

    NASA Astrophysics Data System (ADS)

    Goebl, Werner; Bresin, Roberto

    2003-10-01

    The recording and reproducing capabilities of a Yamaha Disklavier grand piano and a Bösendorfer SE290 computer-controlled grand piano were tested, with the goal of examining their reliability for performance research. An experimental setup consisting of accelerometers and a calibrated microphone was used to capture key and hammer movements, as well as the acoustic signal. Five selected keys were played by pianists with two types of touch (``staccato'' and ``legato''). Timing and dynamic differences between the original performance, the corresponding MIDI file recorded by the computer-controlled pianos, and its reproduction were analyzed. The two devices performed quite differently with respect to timing and dynamic accuracy. The Disklavier's onset capturing was slightly more precise (+/-10 ms) than its reproduction (-20 to +30 ms); the Bösendorfer performed generally better, but its timing accuracy was slightly less precise for recording (-10 to 3 ms) than for reproduction (+/-2 ms). Both devices exhibited a systematic (linear) error in recording over time. In the dynamic dimension, the Bösendorfer showed higher consistency over the whole dynamic range, while the Disklavier performed well only in a wide middle range. Neither device was able to capture or reproduce different types of touch.

  9. 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.

  10. Vigilando la Calidad del Agua de los Grandes Rios de la Nacion: El Programa NASQAN del Rio Grande (Rio Bravo del Norte)

    USGS Publications Warehouse

    Lurry, Dee L.; Reutter, David C.; Wells, Frank C.; Rivera, M.C., (translator); Munoz, A.

    1998-01-01

    La Oficina del Estudio Geologico de los Estados Unidos (U.S. Geological Survey, 0 USGS) ha monitoreado la calidad del agua de la cuenca del Rio Grande (Rio Bravo del Norte) desde 1995 como parte de la rediseiiada Red Nacional para Contabilizar la Calidad del Agua de los Rios (National Stream Quality Accounting Network, o NASOAN) (Hooper and others, 1997). EI programa NASOAN fue diseiiado para caracterizar las concentraciones y el transporte de sedimento y constituyentes quimicos seleccionados, encontrados en los grandes rios de los Estados Unidos - incluyendo el Misisipi, el Colorado y el Columbia, ademas del Rio Grande. En estas cuatro cuencas, el USGS opera actualmente (1998) una red de 40 puntos de muestreo pertenecientes a NASOAN, con un enfasis en cuantificar el flujo en masa (la cantidad de material que pasa por la estacion, expresado en toneladas por dial para cada constituyente. Aplicacando un enfoque consistente, basado en la cuantificacion de flujos en la cuenca del Rio Grande, el programa NASOAN esta generando la informacion necesaria para identificar fuentes regionales de diversos contaminantes, incluyendo sustancias qui micas agricolas y trazas elementos en la cuenca. EI efecto de las grandes reservas en el Rio Grande se puede observar segun los flujos de constituyentes discurren a 10 largo del rio. EI analisis de los flujos de constituyentes a escala de la cuenca proveera los medios para evaluar la influencia de la actividad humana sobre las condiciones de calidad del agua del Rio Grande.

  11. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... the seaward limits of the territorial sea (as defined in 33 CFR 2.22(a)(1)) to Rio Grande, Texas at... 46 Shipping 1 2014-10-01 2014-10-01 false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section 7... LINES Gulf Coast § 7.105 Marquesas Keys, FL to Rio Grande, TX. A line drawn from Marquesas Keys,...

  12. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... the seaward limits of the territorial sea (as defined in 33 CFR 2.22(a)(1)) to Rio Grande, Texas at... 46 Shipping 1 2012-10-01 2012-10-01 false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section 7... LINES Gulf Coast § 7.105 Marquesas Keys, FL to Rio Grande, TX. A line drawn from Marquesas Keys,...

  13. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... the seaward limits of the territorial sea (as defined in 33 CFR 2.22(a)(1)) to Rio Grande, Texas at... 46 Shipping 1 2011-10-01 2011-10-01 false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section 7... LINES Gulf Coast § 7.105 Marquesas Keys, FL to Rio Grande, TX. A line drawn from Marquesas Keys,...

  14. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... the seaward limits of the territorial sea (as defined in 33 CFR 2.22(a)(1)) to Rio Grande, Texas at... 46 Shipping 1 2010-10-01 2010-10-01 false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section 7... LINES Gulf Coast § 7.105 Marquesas Keys, FL to Rio Grande, TX. A line drawn from Marquesas Keys,...

  15. 46 CFR 7.105 - Marquesas Keys, FL to Rio Grande, TX.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... the seaward limits of the territorial sea (as defined in 33 CFR 2.22(a)(1)) to Rio Grande, Texas at... 46 Shipping 1 2013-10-01 2013-10-01 false Marquesas Keys, FL to Rio Grande, TX. 7.105 Section 7... LINES Gulf Coast § 7.105 Marquesas Keys, FL to Rio Grande, TX. A line drawn from Marquesas Keys,...

  16. Is it possible to give scientific solutions to Grand Challenges? On the idea of grand challenges for life science research.

    PubMed

    Efstathiou, Sophia

    2016-04-01

    This paper argues that challenges that are grand in scope such as "lifelong health and wellbeing", "climate action", or "food security" cannot be addressed through scientific research only. Indeed scientific research could inhibit addressing such challenges if scientific analysis constrains the multiple possible understandings of these challenges into already available scientific categories and concepts without translating between these and everyday concerns. This argument builds on work in philosophy of science and race to postulate a process through which non-scientific notions become part of science. My aim is to make this process available to scrutiny: what I call founding everyday ideas in science is both culturally and epistemologically conditioned. Founding transforms a common idea into one or more scientifically relevant ones, which can be articulated into descriptively thicker and evaluatively deflated terms and enable operationalisation and measurement. The risk of founding however is that it can invisibilise or exclude from realms of scientific scrutiny interpretations that are deemed irrelevant, uninteresting or nonsensical in the domain in question-but which may remain salient for addressing grand-in-scope challenges. The paper considers concepts of "wellbeing" in development economics versus in gerontology to illustrate this process. PMID:26698954

  17. Dimension-five operators in grand unified theories

    SciTech Connect

    Sayre, Joshua; Wiesenfeldt, Soeren; Willenbrock, Scott

    2007-02-01

    Extensions of the standard model with low-energy supersymmetry generically allow baryon- and lepton-number violating operators of dimension four and five, yielding rapid proton decay. The dimension-four operators are usually forbidden by matter parity. We investigate to what extent the appearance of dimension-five operators at the Planck scale may be constrained by the different grand-unified gauge groups. Dimension-five operators are suppressed in models based on E{sub 6} and SU(3){sub C}xSU(3){sub L}xSU(3){sub R}, where four matter fields do not form a gauge singlet. An intermediate scale offers the possibility to sufficiently suppress these dimension-five operators.

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

    SciTech Connect

    McGowan, Vance R.; Morton, Winston H.

    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.

  19. 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.

  20. 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.

  1. A Leptophobic Z' And Dark Matter From Grand Unification

    SciTech Connect

    Buckley, Matthew R.; Hooper, Dan; Rosner, Jonathan L.

    2011-09-01

    We explore the phenomenology of Grand Unified Models based on the E_6 group, focusing on the Z' with suppressed couplings to leptons that can appear in such models. We find that this Z' can accommodate the W+dijets anomaly reported by the CDF collaboration. Furthermore, a viable dark matter candidate in the form of a right-handed sneutrino is also present within the fundamental 27-dimensional representation of E_6. Through its sizable couplings to the Z', the dark matter is predicted to possess an elastic scattering cross section with neutrons which can generate the signals reported by the CoGeNT and DAMA/LIBRA collaborations. To avoid being overproduced in the early universe, the dark matter must annihilate to leptons through the exchange of charged or neutral fermions which appear in the 27 of E_6, providing an excellent fit to the gamma ray spectrum observed from the Galactic Center by the Fermi Gamma Ray Space Telescope.

  2. 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.

  3. Groundwater convection model for Rio Grande rift geothermal resources

    SciTech Connect

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

    1981-05-01

    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.

  4. Formulation of Liouville's theorem for grand ensemble molecular simulations

    NASA Astrophysics Data System (ADS)

    Delle Site, Luigi

    2016-02-01

    Liouville's theorem in a grand ensemble, that is for situations where a system is in equilibrium with a reservoir of energy and particles, is a subject that, to our knowledge, has not been explicitly treated in literature related to molecular simulation. Instead, Liouville's theorem, a central concept for the correct employment of molecular simulation techniques, is implicitly considered only within the framework of systems where the total number of particles is fixed. However, the pressing demand of applied science in treating open systems leads to the question of the existence and possible exact formulation of Liouville's theorem when the number of particles changes during the dynamical evolution of the system. The intention of this paper is to stimulate a debate about this crucial issue for molecular simulation.

  5. 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).

  6. 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.; Adachi, T.; Hatanaka, K.; Ishikawa, D.; Matsubara, H.; Okamura, H.; Ong, H. J.; Suzuki, T.; Tamii, A.; Zenihiro, J.; Dozono, M.; Wakasa, T.; Fujita, H.; Fujita, Y.

    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.

  7. Hazards Management in Grand County, Colorado-Fire Fuels Characterization

    USGS Publications Warehouse

    Cole, Christopher; Lile, Elizabeth; Briggs, Jennifer

    2009-01-01

    The USGS Fire Science Initiative is designed to identify potential wildfire risks and related hazards and to mitigate their effects on people, property, and natural resources. The USGS Rocky Mountain Geographic Science Center (RMGSC) plays an integral role in the fire science demonstration project targeting Grand County, Colo., which uses remote sensing imagery, other geospatial data, and advanced classification techniques to produce inventories and assessments of the current state of the ecosystem. The data gathered - extent of tree mortality and insect infestation, changes in fire fuels, susceptibility to post-fire effects, distribution of wildland-urban interface areas, etc. - will give much needed information to decisionmakers on the Federal, State, and local levels.

  8. Discrimination of supersymmetric grand unified models in gaugino mediation

    SciTech Connect

    Okada, Nobuchika; Hieu Minh Tran

    2011-03-01

    We consider supersymmetric grand unified theory (GUT) with the gaugino mediated supersymmetry breaking and investigate a possibility to discriminate different GUT models in terms of predicted sparticle mass spectra. Taking two example GUT models, the minimal SU(5) and simple SO(10) models, and imposing a variety of theoretical and experimental constraints, we calculate sparticle masses. Fixing parameters of each model so as to result in the same mass of neutralino as the lightest supersymmetric particle (LSP), giving the observed dark matter relic density, we find sizable mass differences in the left-handed slepton and right-handed down-type squark sectors in two models, which can be a probe to discriminate the GUT models realized at the GUT scale far beyond the reach of collider experiments.

  9. SU(5) x Z{sub 13} grand unification model

    SciTech Connect

    Dias, Alex G.; Franco, Edison T.; Pleitez, Vicente

    2007-12-01

    We propose an SU(5) grand unified model with an invisible axion and the unification of the three coupling constants which is in agreement with the values, at M{sub Z}, of {alpha}, {alpha}{sub s}, and sin{sup 2}{theta}{sub W}. A discrete, anomalous, Z{sub 13} symmetry implies that the Peccei-Quinn symmetry is an automatic symmetry of the classical Lagrangian protecting, at the same time, the invisible axion against possible semiclassical gravity effects. Although the unification scale is of the order of the Peccei-Quinn scale the proton is stabilized by the fact that in this model the standard model fields form the SU(5) multiplets completed by new exotic fields and, also, because it is protected by the Z{sub 13} symmetry.

  10. Camphor: an herbal medicine causing grand mal seizures.

    PubMed

    MacKinney, Theodore G; Soti, Kamal Raj; Shrestha, Poojan; Basnyat, Buddha

    2015-01-01

    Camphor is usually used in the USA to repel insects, but it is widely used in other countries as an herb. We report the case of a 52-year-old previously healthy Nepali man who ingested approximately 10 g of pure camphor with therapeutic intention. He developed grand mal seizures, and was evaluated in an emergency room. He failed to recall the camphor ingestion initially, and was treated with phenytoin for new-onset idiopathic seizures. Examining physicians only later found out about his camphor ingestion. Finding the cause of new-onset seizures is often challenging for emergency room physicians, internists and neurologists. In addition to other well-reported causes of secondary seizures, herbal medications and supplements must also be explored. PMID:26065546

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

    SciTech Connect

    Mohapatra, R. N.

    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.

  12. 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

  13. The Complexity Parameter in Pulsars: A Grand Update

    NASA Astrophysics Data System (ADS)

    Skrzypczak, A.; Gil, J.

    2012-12-01

    Gil & Sendyk (2000) introduced a natural “complexity parameter” defined as the ratio of a gap height to the size of the polar cap and argued that this quantity should describe the complexity of pulsar profiles. Indeed, they showed that in 182 pulsars with known profile classification as of the year 2000, the complexity parameter was correlated with profile morphology, with core single profiles having the highest values of this parameter, followed by triple profiles and then multiple and conal single and conal double profiles. Here we present a grand update of these results, by adding 141 profiles of the pulsars whose profiles and classification information were published after the year of 2000. The correlations found by Gil & Sendyk (2000) are still clearly present in the new enlarged database.

  14. Bryozoans from rio grande do sul continental shelf, southern Brazil.

    PubMed

    Ramalho, Laís V; Calliari, Lauro

    2015-01-01

    The continental shelf of Rio Grande do Sul (RS) is predominantly composed of unconsolidated sediments with a few hard substrates represented principally by beachrock. In this area there are elongate deposits of shell gravel material which are interpreted as indicators of the palaeo-shorelines. These Pleistocene deposits are overlapped by Holocene sediments (Recent), but are exposed during erosive events caused by extra-tropical cyclones, which provide the mixture of both sediments mainly during autumn and winter. The few studies on bryozoans made in this area previously recorded seven species, one fossil and the other six from Recent fluvial and marine environments. The aim of the present study was to describe the eight most abundant bryozoan species that occur in the inner RS shelf. Of these, four are new records for RS State (Arachnopusia aff. pusae, Hippomonavella brasiliensis, Turbicellepora pourtalesi, and Lifuella gorgonensis), and the other four are new to science (Chaperia taylori, Micropora nodimagna, Cellaria riograndensis, and Exochella moyani). PMID:25947873

  15. The use of "grand master" events for waveform cross correlation

    NASA Astrophysics Data System (ADS)

    Kitov, I. O.; Bobrov, D.; Given, J. W.

    2012-12-01

    More than 90% of seismic events recorded at teleseismic and regional distances are from a few relatively small geographic regions, causing the distribution of seismic events in the Reviewed Event Bulletin (REB) of the International Data Centre (IDC) to be inhomogeneous. When considering the waveform cross correlation technique for the detection, phase association and event building processes that are performed as part of monitoring compliance of the Comprehensive Nuclear-Test-Ban Treaty one is confined to the areas with historical seismicity. The backbone of the waveform cross correlation method is the set of master events (earthquakes or explosions) with high quality waveform templates that have been recorded at array stations of the International Monitoring System (IMS). These master events have to be evenly distributed and their template waveforms should be representative and pure (ie., with negligible noise input). The coverage and characteristic of historical seismicity observed by the IMS seismic network since 2001 does not match these requirements. The current REB allows selection of a number of master events in seismically active areas but even in these areas the quality of templates varies from master to master. In this study, we propose to replicate waveforms from the best master event over a regular grid expanding several hundred kilometers from its epicenter. We call this master event the "grand master". For each grid point, i.e. replicated grand master event, the template has the relevant theoretical time delays between individual sensors at the involved array stations. Since the empirical deviations from the theoretical arrival times at these sensors are inherently related to seismic velocity structure beneath the station, they are fully retained for all replicated master events within several hundred kilometers. These empirical travel time residuals are small but play a key role in the waveform cross correlation method for weak signals. They define a higher sensitivity for the cross correlation method relative to beam forming method where the channels are stacked with the theoretical delays. As a result, the waveform cross correlation technique detects more valid signals at local, regional, and global levels. In assessing the performance of the grand master approach the aftershock sequence of the April 11, 2012 Sumatra earthquake (Ms(IDC)=8.2) was used, with16 master events (actual aftershocks) distributed over an area of 500x500 km. Waveform templates from the best master event over a regular grid with 1o spacing have been replicated. There are two principal procedures in comparing the performance of actual and replicated master events as associated with various characteristics/distributions of detections, as well as with the number of event hypotheses built with the varying sets of stations and locations. Both methods have shown the superiority of the replicated events distributed over a regular grid. Such distributions also reduce the volume of calculations by two orders of magnitude. When appropriately chosen, the grand master allows a reduction in the magnitude threshold of seismic monitoring and improving the accuracy and uncertainty of event locations at the IDC to the level of the best located events. When a ground truth event is available, one can expand its influence over hundreds of kilometers.

  16. 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.

  17. Climate Change Impacts in the Upper Rio Grande Catchment

    NASA Astrophysics Data System (ADS)

    Heikkila, T.; Siegfried, T. U.; Sellars, S. L.; Schlager, E.

    2010-12-01

    In the US Southwest, evidence of increased future drought severity and duration in the context of climate change has been detected. Considering the already difficult water distribution and allocation strategies within the region, we are investigating the Costilla Creek, a tributary to the Rio Grande. The catchment is located in Costilla county in Colorado from where on runoff is crossing boundaries between Colorado and New Mexico three times before its confluence with the Rio Grande in New Mexico. Water allocation is governed by an interstate compact between Colorado and New Mexico. While the states have been relatively successful in complying with the compact’s allocation rules, the Costilla Creek catchment has experienced interstate upstream/downstream conflict, mainly during irrigation seasons. Whether or not the states will be able to avert conflict in the future and maintain compliance with the compact, is a critical question. The situation in the relatively small catchment is not unique. Various interstate watersheds, including the entire Rio Grande basin, the La Plata, Arkansas, and Colorado, are expected to face similar impacts from climate change, yet the water compacts that govern them may not be structured to adapt to these conditions. Looking at the Costilla Creek offers a valuable starting point for understanding how to model these effects across various basins. We have developed a lumped-parameter rainfall-runoff model including snow storage of the Costilla Creek watershed. Temperature and precipitation data from NCRS - SNOTEL stations together with USGS gauging station data were utilized for model calibration and validation. ISCCP solar radiation data and temperature data were used to estimate irrigation water demand in irrigated agriculture. The model is driven by the IPCC SRES A2 scenario. GCM ensemble averaged temperature / precipitation trends were extracted for the upper Rio Grande region. 50 year precipitation simulations were created using a Non-Homogeneous Hidden Markov model (NHMM). For each of the subcatchments, the NHMM was trained on 14 years of daily NCRS - SNOTEL stations precipitation data from 1994 till 2008. To account for the seasonality in precipitation, a seasonal predictor was utilized for model training. As for the low--frequency variations at decadal to multi-decadal scales, the idea was to develop stochastic scenarios via long--term proxies for regional climate from tree ring chronologies. Precipitation matching temperature series were generated by statistical modeling. A Monte Carlo approach for creating 100 climate scenarios was utilized to account forcing uncertainty. Results indicate that the region will experience a general warming/drying and that the seasonality of the runoff will be significantly impacted due to early melting of the snowpack in the higher elevations. These combined effects will significantly impact the ability of the states to comply with the compact’s allocation rules and call for urgent attention of decision makers and stakeholders alike. The findings will further demonstrate the value of the model for applications to other interstate basins in region.

  18. STEM education for teachers in the Rio Grande Valley

    NASA Astrophysics Data System (ADS)

    Ries, Judit Gyorgyey; Baguio, Margaret R.

    2015-11-01

    We have worked with elementary and middle school teachers in the Rio Grande Valley for the last 10 years bringing Earth and Space Science themed workshops to underserved areas of Texas. The Texas curriculum was also changed to include Astronomy and Space Science requirement in the tests students need to take to prove their academic preparedness. The teachers worked through a variety of inquiry-based, hands-on activities after a short presentation on the background science. In order to evaluate our effectiveness, we have asked the teachers to take pre- and post-workshop tests, and we asked them to fill out a self-reflective survey. We will report on our experiences, what works best with the teachers, and in what areas we still have a long way to go.This work was supported by various NASA education grants and Cooperative agreements, as well as grants provided by the Texas Space Grant Consortium.

  19. 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.

  20. Stratigraphy of the Grande Savane Ignimbrite Sequence, Dominica, Lesser Antilles

    NASA Astrophysics Data System (ADS)

    Schneider, S.; Smith, A. L.; Deuerling, K.; Killingsworth, N.; Daly, G.

    2007-12-01

    The island of Dominica, located in the central part of the Lesser Antilles island arc has eight potentially active volcanoes. One of these, Morne Diablotins, is a composite stratovolcano with several superimposed stratigraphic sequences ranging in age from Pliocene (4-2 Ma) to "Younger" Pleistocene (<1.8 Ma). The most recent major eruptive activity from this volcano was a series of Plinian eruptions that produced ignimbrites that gave dates of >22,000 and >40,000 years B.P. The ignimbrite sequences form four flow fans that reached both the east and west coasts of the island. One of these flow fans, the Grande Savane, on the west coast of the island, also extends off-shore for a distance of at least 14 km as a distinctive submarine fan. Stratigraphical studies of the on- shore deposits that make up this fan indicate an older sequence of block and ash flow deposits, within which occurs a distinctive vulcanian fall deposit. These are overlain, with no evidence of an intervening paleosol, by a sequence of ignimbrites containing welded horizons (ranging in thickness from around 4 m to 16m). The lack of fall deposits beneath the ignimbrites suggest they may have been formed by instantaneous continuous collapse of the eruption column. This whole succession is overlain by a series of planar and dune bedded pumiceous surge deposits with interbedded pumiceous lapilli fall and ash fall deposits, that extend laterally outside of the main area of ignimbrite deposition. Beds within this upper sequence often contain accretionary lapilli and gas cavities suggesting magma-water interaction. The youngest deposits from Morne Diablotins appear to be valley- fill deposits of both ignimbrite and block and ash flow. A comparison of the of the Grande Savane pyroclastic sequence with the Pointe Ronde (west coast) and Londonderry (east coast) pyroclastic flow fans will provide information on the eruptive history of this major Plinian episode.

  1. Health assessment for Rio Grande Oil Company Refinery (Rio Grande I), National Priorities List, Sour Lake, Texas, Region 6. CERCLIS No. TXD980795736. Preliminary report

    SciTech Connect

    Not Available

    1990-05-16

    The Rio Grande Oil Company Refinery (Rio Grande I) site is a proposed National Priorities List site located adjacent to the City of Sour Lake in Hardin County, Texas. Rio Grande I was the site of an oil refinery in the 1920s and 1930s. Refinery wastes were disposed of on site in open, unlined pits. A privately-funded remediation effort removed 3,410 cubic yards of waste material from the site in November 1987. Elevated levels of mercury, zinc, and bis(2-ethylhexyl)phthalate were detected in soil on site after remediation. No groundwater contamination was detected. Based on the available environmental sampling information, the Rio Grande I site is not of public health concern under current conditions.

  2. 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...

  3. 78 FR 73559 - Moose-Wilson Corridor Comprehensive Management Plan, Environmental Impact Statement, Grand Teton...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-06

    ... National Park Service Moose-Wilson Corridor Comprehensive Management Plan, Environmental Impact Statement... the Moose-Wilson Corridor, Grand Teton National Park, Wyoming. DATES: The National Park Service will...://parkplanning.nps.gov/MooseWilson , at the Grand Teton National Park Headquarters Building, 1 Teton Park...

  4. 40 CFR 81.239 - Upper Rio Grande Valley Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Air Quality Control Regions § 81.239 Upper Rio Grande Valley Intrastate Air Quality Control Region. The Upper Rio Grande Valley Intrastate Air Quality Control Region (New Mexico) consists of the... Quality Control Region. 81.239 Section 81.239 Protection of Environment ENVIRONMENTAL PROTECTION...

  5. 40 CFR 81.239 - Upper Rio Grande Valley Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Air Quality Control Regions § 81.239 Upper Rio Grande Valley Intrastate Air Quality Control Region. The Upper Rio Grande Valley Intrastate Air Quality Control Region (New Mexico) consists of the... Quality Control Region. 81.239 Section 81.239 Protection of Environment ENVIRONMENTAL PROTECTION...

  6. 40 CFR 81.239 - Upper Rio Grande Valley Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Air Quality Control Regions § 81.239 Upper Rio Grande Valley Intrastate Air Quality Control Region. The Upper Rio Grande Valley Intrastate Air Quality Control Region (New Mexico) consists of the... Quality Control Region. 81.239 Section 81.239 Protection of Environment ENVIRONMENTAL PROTECTION...

  7. 40 CFR 81.239 - Upper Rio Grande Valley Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Air Quality Control Regions § 81.239 Upper Rio Grande Valley Intrastate Air Quality Control Region. The Upper Rio Grande Valley Intrastate Air Quality Control Region (New Mexico) consists of the... Quality Control Region. 81.239 Section 81.239 Protection of Environment ENVIRONMENTAL PROTECTION...

  8. 33 CFR 100.717 - Annual Fort Myers Beach Offshore Grand Prix; Fort Myers, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Annual Fort Myers Beach Offshore Grand Prix; Fort Myers, FL. 100.717 Section 100.717 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.717 Annual Fort Myers Beach Offshore Grand...

  9. 33 CFR 100.720 - Annual Suncoast Offshore Grand Prix; Gulf of Mexico, Sarasota, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Annual Suncoast Offshore Grand Prix; Gulf of Mexico, Sarasota, FL. 100.720 Section 100.720 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.720 Annual Suncoast Offshore Grand Prix;...

  10. 33 CFR 100.720 - Annual Suncoast Offshore Grand Prix; Gulf of Mexico, Sarasota, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Annual Suncoast Offshore Grand Prix; Gulf of Mexico, Sarasota, FL. 100.720 Section 100.720 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.720 Annual Suncoast Offshore Grand Prix;...

  11. 33 CFR 100.717 - Annual Fort Myers Beach Offshore Grand Prix; Fort Myers, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Annual Fort Myers Beach Offshore Grand Prix; Fort Myers, FL. 100.717 Section 100.717 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.717 Annual Fort Myers Beach Offshore Grand...

  12. 77 FR 7143 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-10

    ... Energy Regulatory Commission Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit... Grand Coulee Project Hydroelectric Authority (GCPHA) filed an application, pursuant to section 4(f) of the Federal Power Act, proposing to study the feasibility of the P.E. 46A Wasteway...

  13. 75 FR 20920 - Safety Zone; Lake Havasu Grand Prix, Lake Havasu, AZ

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-22

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Lake Havasu Grand Prix, Lake Havasu, AZ... temporary safety zone upon the navigable waters of Lake Havasu on the Colorado River in Lake Havasu City, Arizona for the Lake Havasu Grand Prix. This temporary safety zone is necessary to provide for the...

  14. 78 FR 70098 - Requested Administrative Waiver of the Coastwise Trade Laws: Vessel GRAND LOUIS; Invitation for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-22

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Maritime Administration Requested Administrative Waiver of the Coastwise Trade Laws: Vessel GRAND LOUIS... of the vessel GRAND LOUIS is: Intended Commercial Use of Vessel: ``Private charters for day-...

  15. Remote Sensing of Exotic Invasive Weeds in the Rio Grande System of Texas

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Exotic invasive weeds are a serious problem in the Rio Grande system of Texas. This paper presents the results of several aerial remote sensing studies conducted from 2002 to 2006 on the Rio Grande from its mouth near Brownsville in south Texas to El Paso in west Texas. Weed species addressed inc...

  16. 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. ...

  17. 75 FR 7625 - Endangered and Threatened Wildlife and Plants; Rio Grande Silvery Minnow (Hybognathus amarus...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-22

    ... Rio Grande silvery minnow was listed as federally endangered in 1994 (July 20, 1994; 59 FR 36988) and critical habitat was designated in 2003 (February 19, 2003; 68 FR 8087). The species was extirpated from..., 2008; 73 FR 74357). Throughout much of its historic range, the decline of the Rio Grande silvery...

  18. 77 FR 7574 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-13

    ... Grand Coulee Project Hydroelectric Authority (GCPHA) filed an application, pursuant to section 4(f) of the Federal Power Act, proposing to study the feasibility of the P.E. Scooteney Wasteway Hydroelectric... Energy Regulatory Commission Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...

  19. 77 FR 7574 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-13

    ... Grand Coulee Project Hydroelectric Authority (GCPHA) filed an application, pursuant to section 4(f) of the Federal Power Act, proposing to study the feasibility of the P.E. 16.4 Wasteway Hydroelectric... Energy Regulatory Commission Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...

  20. "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

  1. Basic Education in the Lower Rio Grande Valley: Human Capital Development or a Colonial System?

    ERIC Educational Resources Information Center

    Lynch, Patrick D.

    This report describes economic, social, and political characteristics of the lower Rio Grande Valley with implications for the educational system, and presents preliminary findings on how south Texas schools are integrating new immigrant Mexican students. The lower Rio Grande Valley comprises four Texas counties and northern Tamaulipas, Mexico.…

  2. 78 FR 26807 - Vista Grande Drainage Basin Improvement Project, Fort Funston, Golden Gate National Recreation...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-08

    ... Service (NPS) is the lead agency for the environmental review under NEPA. The City of Daly City is the lead agency for the environmental review under CEQA. DATES: All written comments must be postmarked not... upgrades to the Vista Grande watershed collection system upstream of the Vista Grande Canal;...

  3. 76 FR 22075 - Divide Ranger District, Rio Grande National Forest; CO; Black Mesa Vegetation Management Project

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-20

    ...; ] DEPARTMENT OF AGRICULTURE Forest Service Divide Ranger District, Rio Grande National Forest; CO; Black Mesa... comments-rocky-mountain-rio-grande-divide@fs.fed.us , or via facsimile to 719-852-6250, with subject Black... for Action The purpose and need for the Black Mesa Vegetation Management Project is move...

  4. 78 FR 48292 - Amendment of Class D Airspace; Grand Forks AFB, ND

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-08

    ... Federal Aviation Administration 14 CFR Part 71 Amendment of Class D Airspace; Grand Forks AFB, ND AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: This action amends Class D... Federal Register a notice of proposed rulemaking (NPRM) to amend Class D airspace for Grand Forks AFB,...

  5. 33 CFR 208.25 - Pensacola Dam and Reservoir, Grand (Neosho) River, Okla.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Pensacola Dam and Reservoir, Grand (Neosho) River, Okla. 208.25 Section 208.25 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE FLOOD CONTROL REGULATIONS § 208.25 Pensacola Dam and Reservoir, Grand (Neosho) River, Okla....

  6. 33 CFR 208.25 - Pensacola Dam and Reservoir, Grand (Neosho) River, Okla.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Pensacola Dam and Reservoir, Grand (Neosho) River, Okla. 208.25 Section 208.25 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE FLOOD CONTROL REGULATIONS § 208.25 Pensacola Dam and Reservoir, Grand (Neosho) River, Okla....

  7. "No. 182. Grand Valley Diversion Dam. June, 1917. R.B.D." Structures ...

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

    "No. 182. Grand Valley Diversion Dam. June, 1917. R.B.D." Structures on the west side of the river below the dam are three bunkhouses, a mess hall, hospital, doctor's residence, engineer's residence, and outbuildings." - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

  8. SYSTEM-LEVEL MONITORING OF RESTORATION EFFORTS AT BAHIA GRANDE MX964487

    EPA Science Inventory

    Bahia Grande Restoration Project is located on a 6,000+ acre shallow basin that at one time was inundated with biological resources and was disrupted by human activity. The project is an attempt to restore Bahia Grande to its original state. Studies indicate that under favorabl...

  9. 75 FR 34932 - Safety Zone; Michigan City Super Boat Grand Prix, Lake Michigan, Michigan City, IN

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-21

    ... Super Boat Grand Prix, Lake Michigan, Michigan City, IN in the Federal Register (75 FR 22333). We... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Michigan City Super Boat Grand Prix, Lake Michigan, Michigan City, IN AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The...

  10. 78 FR 28005 - System Energy Resources, Inc.; Grand Gulf Nuclear Station; Order Approving Direct and Indirect...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-13

    ... COMMISSION System Energy Resources, Inc.; Grand Gulf Nuclear Station; Order Approving Direct and Indirect Transfers of Early Site Permit and Approving Conforming Amendment I System Energy Resources, Inc. (SERI), is... direct transfer of Grand Gulf ESP Site, to a new limited liability company, System Energy Resource,...

  11. 77 FR 37326 - Safety Zone; Grand Hotel 125th Anniversary Fireworks Celebration, Mackinaw Island, MI

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-21

    .... SUPPLEMENTARY INFORMATION: Table of Acronyms DHS Department of Homeland Security FR Federal Register NPRM Notice... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Grand Hotel 125th Anniversary Fireworks... launched from a point on Lake Huron to commemorate the Grand Hotel's 125th anniversary. The Captain of...

  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. 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. 75 FR 49022 - San Luis & Rio Grande Railroad-Petition for a Declaratory Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-12

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Surface Transportation Board San Luis & Rio Grande Railroad--Petition for a Declaratory Order AGENCY... comments. SUMMARY: In response to a petition filed by the San Luis & Rio Grande Railroad (SLRG), the...

  15. 78 FR 74005 - Amendment of Class D and Class E Airspace; Grand Forks, ND

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-10

    ... Executive Order 12866; (2) is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR.... 10854, 24 FR 9565, 3 CFR, 1959-1963 Comp., p. 389. Sec. 71.1 0 2. The incorporation by reference in 14... geographic coordinates for Grand Forks International Airport and Grand Forks Air Force Base (AFB)....

  16. 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.

  17. Low energy predictions from supersymmetric grand unified theories

    NASA Astrophysics Data System (ADS)

    Rizvi, Syed Shabbar Raza

    We study SU(5) and SO(10) supersymmetric grand unified theory parameter space with and without the condition of Yukawa coupling unification using 2-loop minimal supersymmetric Standard Model RGEs including full 1-loop threshold effects. We first study b-tau Yukawa coupling unification in constrained minimal suppersymmetric standard model inspired by SU(5) supersymmetric grand unified theory. We show that b-tau Yukawa coupling unification yields top squark (stop) coannihilation scenario. The lightest supersymmetric particle is a bino-like dark matter neutralino, which is accompanied by a 10-20% heavier stop quark of mass ˜ 100-300 GeV. We also study b-tau Yukawa coupling unification in supersymmetric SU(5) grand unified theory with three additional parameter in soft supersymmetry breaking sector as compared to five parameters of constrained minimal suppersymmetric standard model. The Yukawa-unified solutions can be divided into two classes. Solutions with tanbeta ˜ 3-11 gluino mass ˜ 1-4 TeV and first two family squarks masses ˜ 1-5 TeV. These solutions are under stress because of CP-even Higgs mass constraints. The second class of solutions occurs at large tanbeta ˜ 35- 60. Constraining only b-tau Yukawa coupling unification to ˜ 5% favors a light gluino ≲ 2 TeV, which should ultimately be accessible to Large Hadron Collider searches. We show that a gluino ˜ 3 TeV can also be compatible with excellent t-b-tau Yukawa coupling unification in supersymmetric models with non-universal Higgs masses and positive value Higgs bilinear mass term. The gluino in such models is the lightest colored sparticle, while the squark sector displays an inverted mass hierarchy with first two family squarks ˜ 5-20 TeV. We present some LHC testable benchmark points for which the lightest CP-even Higgs boson mass ≃ 125 GeV. We also discuss LHC signatures of Yukawa-unified models with heavier gluinos. We expect gluino pair production followed by decay to final states containing four b-jets plus four W-bosons plus missing transverse energy to occur at possibly observable rates at Large Hadron Collider. We identify within the SU(5) framework the minimum number of soft supersymmetry breaking parameters which can yield a bottom squrak (sbottom) as the next to lightest supersymmetric particle. We focus in particular on the neutralino-sbottom coannihilation scenario which gives rise to the desired neutralino dark matter relic density. We find solutions in which the sbottom mass is greater than or of order 210 GeV, while the gluino and the first two family squarks are heavier than 1 TeV. Some benchmark points which can be tested at the Large Hadron Collider are presented. We attempt to accommodate simultaneously the observed Higgs boson mass and the muon g-2 data within SU(5) framework. Our solutions are compatible with other phenomenological constraints such as neutralino dark matter relic abundance and rare B-meson decays. Some regions of the allowed parameter space will be explored at the upgraded LHC and by dark matter direct detection experiments.

  18. Busca de estruturas em grandes escalas em altos redshifts

    NASA Astrophysics Data System (ADS)

    Boris, N. V.; Sodrã©, L., Jr.; Cypriano, E.

    2003-08-01

    A busca por estruturas em grandes escalas (aglomerados de galáxias, por exemplo) é um ativo tópico de pesquisas hoje em dia, pois a detecção de um único aglomerado em altos redshifts pode por vínculos fortes sobre os modelos cosmológicos. Neste projeto estamos fazendo uma busca de estruturas distantes em campos contendo pares de quasares próximos entre si em z Â3 0.9. Os pares de quasares foram extraídos do catálogo de Véron-Cetty & Véron (2001) e estão sendo observados com os telescópios: 2,2m da University of Hawaii (UH), 2,5m do Observatório de Las Campanas e com o GEMINI. Apresentamos aqui a análise preliminar de um par de quasares observado nos filtros i'(7800 Å) e z'(9500 Å) com o GEMINI. A cor (i'-z') mostrou-se útil para detectar objetos "early-type" em redshifts menores que 1.1. No estudo do par 131046+0006/J131055+0008, com redshift ~ 0.9, o uso deste método possibilitou a detecção de sete objetos candidatos a galáxias "early-type". Num mapa da distribuição projetada dos objetos para 22 < i' < 25 observou-se que estas galáxias estão localizadas próximas a um dos quasares e há indícios de que estejam aglomeradas dentro de um área de ~ 6 arcmin2. Se esse for o caso, estes objetos seriam membros de uma estrutura em grande escala. Um outro argumento em favor dessa hipótese é que eles obedecem uma relação do tipo Kormendy (raio equivalente X brilho superficial dentro desse raio), como a apresentada pelas galáxias elípticas em z = 0.

  19. 76 FR 15936 - Designation for the Owensboro, KY; Bloomington, IL; Iowa Falls, IA; Casa Grande, AZ; Fargo, ND...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-22

    ... hours (7 CFR 1.27(c)). SUPPLEMENTARY INFORMATION: In the August 30, 2010, Federal Register (75 FR 52925..., IL; Iowa Falls, IA; Casa Grande, AZ; Fargo, ND; Grand Forks, ND; and Plainview, TX Areas...

  20. [Grand mal convulsion after an interscalene block with ropivacaine].

    PubMed

    Ichikawa, Manabu; Ishiyama, Tadahiko; Shibuya, Kazuhiro; Okawa, Iwao; Matsukawa, Takashi

    2009-04-01

    We report a case of grand mal convulsion due to inadvertent intravascular injection of ropivacaine. An 83-year-old woman was scheduled for upper limb surgery. The interscalene block was performed with neurostimulator and 0.5% ropivacaine 30 ml was injected after careful negative aspiration. Approximately 3 min after the injection, the patient lost consciousness and developed generalized convulsion, which was repeated 7 times. The seizures stopped after administration of diazepam 10 mg and thiamylal 250 mg i.v. Trachea was intubated and lungs were mechanically ventilated. During the seizure, arterial blood pressure increased from 180/110 mmHg to 190/120 mmHg and heart rate changed from 90 beats x min(-1) to 88 beats x min(-1). Ventricular premature beats were observed sporadically but stopped spontaneously. After the episode, the operation was performed under general anesthesia (nitrous oxide 50% and sevoflurane 1.5-2% in oxygen 50%). The patient recovered uneventfully after the operation. Although careful aspiration was done before the injection of ropivacaine, inadvertent intravenous injection could have occurred during the administration. Intermittent aspiration should be indispensable during the administration, because a large dose of local anesthetic is necessary for interscalene block. In this case, the only cardiovascular manifestation was ventricular premature beats indicating that ropivacaine has less cardiotoxicity. PMID:19364012

  1. Local flows in the Quequén Grande River Estuary, Argentina

    NASA Astrophysics Data System (ADS)

    Pereyra, M. G.; Thomas, L. P.; Marino, B. M.

    2009-05-01

    Quequén Grande River is one of the most important water courses of Buenos Aires Province due to the economic and strategic significance of its estuary, where the populous Quequén-Necochea area and Quequén Port are located. The minor Las Cascadas falls, at 15 km from the place where the river meets the sea is the point where the maximum tidal propagation is detected marking the head of the estuary. Artificial dredging is needed to insure the adequate navigability conditions in the Quequén harbour, which has induced a highly stratified water column in the last 2 km of the estuary. Thus, an abrupt step is established at the head of the harbour, implying a much reduced water circulation and in some cases nonexistent, producing strong reductive and even anoxic conditions. The foot of the step is a sediment and organic matter trap and becomes an interesting place of study. The goal of this article is to present the information obtained with Doppler sonar at the neighborhood of the step, which allows distinguishing local turbidity currents that may influence the deposition patterns of the sediments.

  2. Extreme Drought Conditions in the Rio Grande/Bravo Basin

    NASA Astrophysics Data System (ADS)

    Gutiérrez, F.; Dracup, J. A.

    2001-12-01

    The Treaty of February 3, 1944 entitled "Utilization of Waters of the Colorado and Tijuana Rivers and of the Rio Grande" between the U.S. and Mexico regulates the distribution of flows of the rivers between these two countries. The treaty is based on hydrological data available up to 1944. Using new (historical and paleoclimatological) data, the water balance presented in the Treaty is re-examinated and the 431,721,000 m3/year allocation for USA during "extreme drought conditions" is re-evaluated. The authors define "extreme drought conditions" for this basin and a hydrological drought analysis is carried out using a streamflow simulation model. The analysis is complemented with an analysis of the effects of the El Niño - Southern Oscillation and the Pacific Decadal Oscillation on precipitation and streamflow. The results of this research will be applicable to potential changes in the current water resources management policies on the basin. Given the social, economical and political importance of this basin, the findings of this research potentially will have significant impacts. This research is founded by the NSF fund SAHRA (Science and Technology Center to study and promote the "Sustainability of Water Resources in Semi-Arid Regions" at the University of Arizona).

  3. Latest results from the KASCADE-Grande experiment

    NASA Astrophysics Data System (ADS)

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

    2014-04-01

    The KASCADE-Grande experiment operated at KIT from January 2004 to November 2012, measuring EAS generated by primary cosmic rays in the 1016-1018 eV energy range. The experiment detected, for each single event, with a high resolution, the total number of charged particles (Nch) and of muons (Nμ). In this contribution we present the latest results about: The measurement of the all particle energy spectrum, discussing the influence of the hadronic interaction model used to derive the energy calibration of the experimental data. The energy spectra derived separating the events according to the Nμ /Nch ratio. This technique allowed us to unveil a steepening of the spectrum of heavy primaries at E ~10 16.92 ± 0.04 eV and a hardening of the spectrum of light primaries at E ~10 17.08 ± 0.08 eV. The elemental spectra (for five mass groups) obtained applying a detailed unfolding analysis technique. A search for large scale anisotropies.

  4. Domain walls and fermion scattering in grand unified models

    SciTech Connect

    Steer, D.A.; Vachaspati, T.

    2006-05-15

    Motivated by grand unification, we study the properties of domain walls formed in a model with SU(5)xZ{sub 2} symmetry which is spontaneously broken to SU(3)xSU(2)xU(1)/Z{sub 6}, and subsequently to SU(3)xU(1)/Z{sub 3}. Even after the first stage of symmetry breaking, the SU(3) symmetry is broken to SU(2)xU(1)/Z{sub 2} on the domain wall. In a certain range of parameters, flux tubes carrying color- and hyper-charge live on the domain wall and appear as 'boojums' when viewed from one side of the domain wall. Magnetic monopoles are also formed in the symmetry breaking and those carrying color and hyper-charge can be repelled from the wall due to the Meissner effect, or else their magnetic flux can penetrate the domain wall in quantized units. After the second stage of symmetry breaking, fermions can transmute when they scatter with the domain wall, providing a simpler version of fermion-monopole scattering: for example, neutrinos can scatter into d-quarks, leaving behind electric charge and color which is carried by gauge field excitations living on the domain wall.

  5. Regional atmospheric circulation shifts induced by a grand solar minimum

    NASA Astrophysics Data System (ADS)

    Martin-Puertas, Celia; Matthes, Katja; Brauer, Achim; Muscheler, Raimund; Hansen, Felicitas; Petrick, Christof; Aldahan, Ala; Possnert, Göran; van Geel, Bas

    2012-06-01

    Large changes in solar ultraviolet radiation can indirectly affect climate by inducing atmospheric changes. Specifically, it has been suggested that centennial-scale climate variability during the Holocene epoch was controlled by the Sun. However, the amplitude of solar forcing is small when compared with the climatic effects and, without reliable data sets, it is unclear which feedback mechanisms could have amplified the forcing. Here we analyse annually laminated sediments of Lake Meerfelder Maar, Germany, to derive variations in wind strength and the rate of 10Be accumulation, a proxy for solar activity, from 3,300 to 2,000 years before present. We find a sharp increase in windiness and cosmogenic 10Be deposition 2,759 +/- 39 varve years before present and a reduction in both entities 199 +/- 9 annual layers later. We infer that the atmospheric circulation reacted abruptly and in phase with the solar minimum. A shift in atmospheric circulation in response to changes in solar activity is broadly consistent with atmospheric circulation patterns in long-term climate model simulations, and in reanalysis data that assimilate observations from recent solar minima into a climate model. We conclude that changes in atmospheric circulation amplified the solar signal and caused abrupt climate change about 2,800 years ago, coincident with a grand solar minimum.

  6. Hydrological and Meteorological Disturbances in Rio Grande Riparian Ecosystems

    NASA Astrophysics Data System (ADS)

    Thibault, J. R.; Cleverly, J. R.; Dahm, C.

    2012-12-01

    Invasive species and ecohydrological disturbances are imperiling native riparian ecosystems. Adaptable, resilient exotic competitors including tamarisk have colonized many waterways in the western US. Alteration of the natural flow regime due to water diversions is expected to be exacerbated by climate change in this region, confounding restoration efforts. Climate change may also increase the likelihood of other disturbances, including extreme weather events (drought, floods, temperatures). We investigate how hydrological and meteorological variability impact water use by tamarisk communities that have overtaken native riparian vegetation. We have collected more than a decade of complete growing season eddy covariance evapotranspiration (ET) and water table (WT) elevation data at two sites along the Rio Grande corridor of central New Mexico, USA. Conditions have ranged from extreme drought to exceedingly wet years with extensive overbank flooding, and from record setting warm to cold temperatures. Severe to extreme droughts persisted throughout 2002 and 2003. Abundant snowpacks and wetter conditions led to extensive flooding early in the 2005 and 2008 growing seasons. Along with a return to intense drought conditions, extreme temperatures struck New Mexico in 2011. A deep freeze in early February followed by an extraordinarily late, extended hard freeze at the onset of the growing season was then succeeded by the warmest summer in the state's 117 year record. We present how water use by the replacement communities responds to droughts, flooding, and extreme temperatures, all of which are expected to increase in frequency, and speculate how these disturbances will affect native riparian ecosystems.

  7. 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.

  8. Forecasting Austrian national elections: The Grand Coalition model

    PubMed Central

    Aichholzer, Julian; Willmann, Johanna

    2014-01-01

    Forecasting the outcomes of national elections has become established practice in several democracies. In the present paper, we develop an economic voting model for forecasting the future success of the Austrian ‘grand coalition’, i.e., the joint electoral success of the two mainstream parties SPOE and OEVP, at the 2013 Austrian Parliamentary Elections. Our main argument is that the success of both parties is strongly tied to the accomplishments of the Austrian system of corporatism, that is, the Social Partnership (Sozialpartnerschaft), in providing economic prosperity. Using data from Austrian national elections between 1953 and 2008 (n=18), we rely on the following predictors in our forecasting model: (1) unemployment rates, (2) previous incumbency of the two parties, and (3) dealignment over time. We conclude that, in general, the two mainstream parties benefit considerably from low unemployment rates, and are weakened whenever they have previously formed a coalition government. Further, we show that they have gradually been losing a good share of their voter basis over recent decades. PMID:26339109

  9. Role of gas in supporting grand spiral structure

    NASA Astrophysics Data System (ADS)

    Ghosh, Soumavo; Jog, Chanda J.

    2015-08-01

    The density wave theory for the grand-design two-armed spiral pattern in galaxies is successful in explaining several observed features. However, the long-term persistence of this spiral structure is a serious problem since the group transport would destroy it within about a billion years as shown in a classic paper by Toomre. In this paper, we include the low-velocity dispersion component, namely gas, on an equal footing with stars in the formulation of the density wave theory, and obtain the dispersion relation for this coupled system. We show that the inclusion of gas makes the group transport slower by a factor of few, thus allowing the pattern to persist longer - for several billion years. Though still less than the Hubble time, this helps in making the spiral structure more long-lived. Further we show that addition of gas is essential to get a stable wave for the observed pattern speed for the Galaxy, which otherwise is not possible for a one-component stellar disc.

  10. Hiker Fatality From Severe Hyponatremia in Grand Canyon National Park.

    PubMed

    Myers, Thomas M; Hoffman, Martin D

    2015-09-01

    We present the case of a hiker who died of severe hyponatremia at Grand Canyon National Park. The woman collapsed on the rim shortly after finishing a 5-hour hike into the Canyon during which she was reported to have consumed large quantities of water. First responders transported her to the nearest hospital. En route, she became unresponsive, and subsequent treatment included intravenous normal saline. Imaging and laboratory data at the hospital confirmed hypervolemic hyponatremia with encephalopathy. She never regained consciousness and died of severe cerebral edema less than 24 hours later. We believe this is the first report of a fatality due to acute hyponatremia associated with hiking in a wilderness setting. This case demonstrates the typical pathophysiology, which includes overconsumption of fluids, and demonstrates the challenges of diagnosis and the importance of appropriate acute management. Current treatment guidelines indicate that symptomatic exercise-associated hyponatremia should be acutely managed with hypertonic saline and can be done so without concern over central pontine myelinolysis, whereas treatment with high volumes of isotonic fluids may delay recovery and has even resulted in deaths. PMID:25935312

  11. 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.

  12. 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.

  13. 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).

  14. 76 FR 7831 - Grand River Dam Authority; Notice of Application for Amendment of License and Soliciting Comments...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-11

    ... Energy Regulatory Commission Grand River Dam Authority; Notice of Application for Amendment of License...: Grand River Dam Authority. e. Name of Project: Markham Ferry Project. f. Location: The project is..., Grand River Dam Authority, P.O. Box 409, Vinita, OK 73401-0409. Tel: (918) 256-5545. i. FERC...

  15. 75 FR 4363 - Grand River Dam Authority; Notice of Application for Amendment of License and Soliciting Comments...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-27

    ... Energy Regulatory Commission Grand River Dam Authority; Notice of Application for Amendment of License..., 2009. d. Applicant: Grand River Dam Authority. e. Name of Project: Markham Ferry Hydroelectric Project... Contact: D. Casey Davis, Grand River Dam Authority, P.O. Box 409, 226 West Dwain Willis Avenue,...

  16. 75 FR 74700 - Grand River Dam Authority; Notice of Application for Amendment of License and Soliciting Comments...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-01

    ... Energy Regulatory Commission Grand River Dam Authority; Notice of Application for Amendment of License.... Date Filed: October 26, 2010. d. Applicant: Grand River Dam Authority. e. Name of Project: Markham.... 791(a)-825(r). h. Applicant Contact: Tamara E. Jahnke, Grand River Dam Authority, P.O. Box 409,...

  17. 78 FR 76604 - Grand River Dam Authority; Notice of Application Tendered for Filing With the Commission and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-18

    ... Energy Regulatory Commission Grand River Dam Authority; Notice of Application Tendered for Filing With.... Date Filed: November 27, 2013. d. Applicant: Grand River Dam Authority. e. Name of Project: Salina... Hudson in the Grand River basin in Mayes County, Oklahoma. The project does not affect federal lands....

  18. 76 FR 26931 - Safety Zone; Second Annual Space Coast Super Boat Grand Prix, Atlantic Ocean, Cocoa Beach, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-10

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Second Annual Space Coast Super Boat Grand... Cocoa Beach, Florida during the Second Annual Space Coast Super Boat Grand Prix. The Second Annual Space... International Productions, Inc., is hosting the Second Annual Space Coast Super Boat Grand Prix, a series...

  19. 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

    ... Grand Canyon National Park, AZ Appendix to Subpart U of Part 93 Aeronautics and Space FEDERAL AVIATION... TRAFFIC RULES Special Flight Rules in the Vicinity of Grand Canyon National Park, AZ Pt. 93, Subpt. U, App. Appendix to Subpart U of Part 93—Special Flight Rules in the Vicinity of the Grand Canyon National Park,...

  20. 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

    ... Grand Canyon National Park, AZ Appendix to Subpart U of Part 93 Aeronautics and Space FEDERAL AVIATION... TRAFFIC RULES Special Flight Rules in the Vicinity of Grand Canyon National Park, AZ Pt. 93, Subpt. U, App. Appendix to Subpart U of Part 93—Special Flight Rules in the Vicinity of the Grand Canyon National Park,...

  1. 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

    ... Grand Canyon National Park, AZ Appendix to Subpart U of Part 93 Aeronautics and Space FEDERAL AVIATION... TRAFFIC RULES Special Flight Rules in the Vicinity of Grand Canyon National Park, AZ Pt. 93, Subpt. U, App. Appendix to Subpart U of Part 93—Special Flight Rules in the Vicinity of the Grand Canyon National Park,...

  2. 77 FR 2563 - Public Land Order No. 7787; Withdrawal of Public and National Forest System Lands in the Grand...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-18

    ... Lands in the Grand Canyon Watershed; Arizona AGENCY: Bureau of Land Management, Interior. ACTION: Public... existing rights, for a period of 20 years in order to protect the Grand Canyon Watershed from adverse... public land laws, in order to protect the Grand Canyon Watershed from adverse effects of...

  3. 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

    ... Grand Canyon National Park, AZ Appendix to Subpart U of Part 93 Aeronautics and Space FEDERAL AVIATION... TRAFFIC RULES Special Flight Rules in the Vicinity of Grand Canyon National Park, AZ Pt. 93, Subpt. U, App. Appendix to Subpart U of Part 93—Special Flight Rules in the Vicinity of the Grand Canyon National Park,...

  4. Chilling of Steindachneridionparahybae (siluriformes: pimelodidae) embryos.

    PubMed

    da Silva Lopes, Taís; Sanches, Eduardo Antônio; Okawara, Renan Yoshiharu; Romagosa, Elizabeth

    2015-09-01

    The objective of this study was to assess the viability of Steindachneridion parahybae embryos after chilling using different cryoprotectant solutions, stages of embryonic development, chilling curves, and storage periods at temperatures between -10 °C and 0 °C. Three experimental tests were conducted, and the following aspects were evaluated: (1) the toxicity of six cryoprotectant solutions (10% methanol, ethylene glycol, or DMSO combined with 0.5-M sucrose or lactose); (2) viability of embryos submitted to cooling with two cryoprotectant solutions (10% or 20% methanol combined with 10-M sucrose) at three different stages of development (closure of blastoporus, appearance of the optic vesicle and the moment when the tail began to straighten out), and two chilling periods (6 and 12 hours); (3) viability of embryos submitted to cooling with three chilling curves (directly to the freezer without a curve, 0.5 °C/min and 1.0 °C/min) and two chilling periods (6 and 12 hours). After the tests, it was concluded that the protocol which presented the most positive results after chilling, with a hatching rate of 63.50 ± 9.98% of the embryos and 12.32 ± 3.85% normal hatched larvae, was the one with embryos at the free-tail stage, the cryoprotectant solution with 10% methanol and 10-M sucrose, a chilling curve of 0.5 °C/min, stored for a maximum of 6 hours at subzero temperatures (temperature ranging between -5.05 °C and -7.83 °C). PMID:25989879

  5. View of northeastern Mexico and the Rio Grande Valley of Texas

    NASA Technical Reports Server (NTRS)

    1973-01-01

    An oblique view of northeastern Mexico and the Rio Grande Valley of Texas (26.0N,100.0W), as photographed from the Skylab space station by one of the Skylab 4 crewmen. Mexico's Sierra Madre Oriental Mountains are in the center of the picture. The Gulf of Mexico is in the background. Note the lakes on the Rio Grande River. Monterrey is near the center of the picture. Field patterns in the lower Rio Grande Valley can easily be identified. The stark, linear roughness of the Sierra Madre Oriental Mountains is the most prominent feature.

  6. Plutonium and the Rio Grande: Environmental Change and Contamination in the Nuclear Age

    NASA Astrophysics Data System (ADS)

    Leipnik, Mark

    Plutonium and the Rio Grande begins with an evocative description of the tranquility that prevailed along the Rio Grande in the halcyon days before the Manhattan Project changed the environment of this corner of New Mexico forever. Graf presents a methodology for studying the environmental impacts of the plutonium releases from facilities at Los Alamos. Specifically, he quantifies releases of various isotopes of plutonium and tracks their fate in the sediments and water bodies of the Rio Grande. Despite access to ample reliable data, his task is challenging: it requires regional-scale analysis and applications of techniques from disciplines including geomorphology, hydrology, environmental chemistry, plant physiology, and historical research.

  7. Grand challenge problems in environmental modeling and remediation: Groundwater contaminant transport. Final project report 1998

    SciTech Connect

    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.

  8. Magnétisme des cristaux de molécules à grand spin

    NASA Astrophysics Data System (ADS)

    Villain, J.

    2003-01-01

    Magnetism of molecular crystals with large spins In the last decades, chemists have created magnetic molecules whose spin (typically s=10) is so high that the relaxation time of the magnetization can become macroscopic at low temperature. These new materials have novel properties which are described in detail, but in simple words in the present work. The basic principles of magnetism, such as anisotropy and exchange, are first recalled, then large spin molecules are described and situated in the world of magnetism. In the second chapter, thermally activated magnetic relaxation is studied using a master equation, the coefficients of which are evaluated from the spin-phonon interaction and Fermi's golden rule. The third chapter is devoted to the tunneling of an isolated spin in an anisotropy field, and the tunnel splitting is evaluated by simple methods. In particular, the values of the magnetic field where the tunnel splitting vanishes (“diabolic” points) are evaluated. In the fourth chapter, alternative methods based on path integrals are briefly described. In the fifth chapter, the effect of a time-dependent magnetic field is investigated, again in the case of an isolated spin. Spins are thus allowed to flip during the short time when tunneling is allowed by the magnetic field. The sixth chapter is devoted to the interaction of the spin with its environment at low temperature, when relaxation is influenced by dipole interactions with other molecular spins and with nuclear spins. In the last chapter, spin tunneling between excited states is addressed. This is a novel and important features of these materials. Finally, in six appendices, the fundamental constants and the various, usual notations are recalled as well as the correspondance between various types of magnetic fields, the Arrhenius law is derived from the master equation, the Landau-Zener-Stückelberg formula is proved, a theory of magnetic tunneling in the presence of hyperfine interactions is outlined. A last appendix contains an index. Les chimistes ont créé, dans les dernières années du vingtième siècle, des molécules magnétiques dont le spin (typiquement s=10) est suffisamment grand pour que le temps de relaxation de l'aimantation puisse devenir macroscopique à basse température. Ces nouveautés donnent lieu à des phénomènes nouveaux dont nous donnons ici une description détaillée. Nous commençons par rappeler les concepts fondamentaux du magnétisme, tels que l'anisotropie et l'échange, puis nous décrivons les molécules à grand spin et nous les situons dans le monde du magnétisme. Dans le deuxième chapitre, nous étudions la relaxation magnétique thermiquement activée, en utilisant l'équation maîtresse et en évaluant ses coefficients à partir de l'interaction spin-phonons et de la règle d'or. Le troisième chapitre est consacré à l'effet tunnel d'un spin isolé, et nous calculons l'écart tunnel par des méthodes simples. Nous obtenons en particulier les valeurs du champ magnétique où la séparation tunnel s'annule (points "diaboliques"). Dans le quatrième chapitre, nous décrivons brièvement des méthodes alternatives basées sur les intégrales sur les chemins. Dans le cinquième chapitre, nous étudions l'effet, toujours sur un spin isolé, d'un champ magnétique dépendant du temps, qui déclenche le retournement partiel des spins au moment où la valeur du champ autorise l'effet tunnel. Le sixième chapitre est consacré à l'interaction du spin avec son environnement à basse température, quand la relaxation magnétique est due aux interactions dipolaires avec les autres spins moléculaires et avec les spins nucléaires. Dans le septième et dernier chapitre, nous traitons l'effet tunnel du spin entre états excités, phénomène original et important dans ces matériaux. Enfin, dans six annexes, nous rappelons les constantes fondamentales et les différentes notations courantes, la correspondance entre les divers types de champs magnétiques, la démonstration de la loi d'Arrhenius à partir de l'é

  9. Restoration potential of Rio Grande riparian ecosystems amid hydroclimatic challenges

    NASA Astrophysics Data System (ADS)

    Thibault, J. R.; Dahm, C.; Cleverly, J. R.

    2013-12-01

    Hydrological processes drive the ecological functioning and sustainability of cottonwood-dominated riparian ecosystems in the arid southwestern USA. Snowmelt runoff elevates water tables (WTs) and inundates floodplains, which with favorable timing, magnitude, and duration promote cottonwood germination. Once established, these phreatophytes rely on shallow water tables. In New Mexico's middle Rio Grande (MRG) corridor, native cottonwood riparian communities are threatened by diminished flooding and deepening WTs due to river management, competitive invasive vegetation, and a persistent drought. Since 2000 we have monitored WTs and evapotranspiration (via eddy covariance flux towers) at several locations along the MRG. Conditions have ranged from extreme drought to exceedingly wet years with extensive overbank flooding. We assess the threats to and the restoration of these diverse ecosystems. Despite 2 wet years, drought has defined conditions during the first 13 years of our research (2000 - 2012). Severe to extreme drought has characterized about 40% of snowmelt periods critical to cottonwood germination and nearly half of the complete growing seasons. River flows have averaged 75% of normal and < 50% in many years. Peak snowmelt runoff during 2000 - 2012 was 36% lower and occurred 10 days earlier than the long-term mean. Our flood-prone site has been significantly inundated (> 50% of the snowmelt period) only twice, in the two wet years. The hydroclimatic regime of this region is expected to see an increase drought frequency. Thus, it is imperative to optimize restoration strategies. Suitable sites have diminished greatly as the once meandering, more freely flowing MRG has been constrained and depleted. Invasive vegetation less susceptible to the altered hydrologic regime further impact the MRG. Our long-term monitoring at various sites over a range of hydroclimatic extremes reveals attributes that can be evaluated for restoration potential. These include likelihood of flooding, timing of peak WT elevations, rate of water table decline following peaks, WT depths and variability during snowmelt and the overall growing season, and the relationship between WTs and the health of the riparian community.

  10. Mantle Dynamics Beneath the Rio Grande Rift and Colorado Plateau.

    NASA Astrophysics Data System (ADS)

    Gao, W.; Grand, S.; West, M.; Gok, R.; Ni, J.; Wilson, D.; Aster, R.; Schlue, J.; Baldridge, S.; Semken, S.

    2002-12-01

    We have inverted P and S wave teleseismic delay times recorded by the LA RISTRA (Colorado PLateau, Rio Grande Rift, Great Plains Seismic TRansect) array. The RISTRA array consisted of 57 broad band seismic stations most of which were deployed in a line extending 950 km from Lake Powell, Utah to Pecos, Texas. P, PKP, S, and SKS travel time delays were inverted using the LSQR algorithm to determine lateral variations in seismic velocity to about 600 km depth beneath the line. The small station spacing along the line as well as its great length result in a well resolved image of the mantle beneath the line. Within the upper 200km of the mantle slow seismic anomalies are obvious beneath the Rift with the slowest anomalies beneath Mt Taylor on the west of the Rift and Carrizozo near the east of the rift. The mantle beneath the Great Plains and Colorado Plateau is seismically faster than within the Rift but within each of the other two provinces, there are significant variations. In particular, the eastern edge of the Colorado Plateau has faster seismic wavespeeds than in the center of the Plateau (near the four corners region) and the western edge of the Great Plains shows a narrow (about 75 km wide) fast structure that is faster than the mantle further to the east in the Great Plains. These fast mantle anomalies in the upper 200 km of the mantle at the edges of the Rift may represent lithosphere that has been removed from the Rift region. Alternatively, if the fast mantle anomalies are more ancient, they may provide structural control on where rifting and volcanism have occurred.

  11. High performance computing and communications grand challenges program

    SciTech Connect

    Solomon, J.E.; Barr, A.; Chandy, K.M.; Goddard, W.A., III; Kesselman, C.

    1994-10-01

    The so-called protein folding problem has numerous aspects, however it is principally concerned with the {ital de novo} prediction of three-dimensional (3D) structure from the protein primary amino acid sequence, and with the kinetics of the protein folding process. Our current project focuses on the 3D structure prediction problem which has proved to be an elusive goal of molecular biology and biochemistry. The number of local energy minima is exponential in the number of amino acids in the protein. All current methods of 3D structure prediction attempt to alleviate this problem by imposing various constraints that effectively limit the volume of conformational space which must be searched. Our Grand Challenge project consists of two elements: (1) a hierarchical methodology for 3D protein structure prediction; and (2) development of a parallel computing environment, the Protein Folding Workbench, for carrying out a variety of protein structure prediction/modeling computations. During the first three years of this project, we are focusing on the use of two proteins selected from the Brookhaven Protein Data Base (PDB) of known structure to provide validation of our prediction algorithms and their software implementation, both serial and parallel. Both proteins, protein L from {ital peptostreptococcus magnus}, and {ital streptococcal} protein G, are known to bind to IgG, and both have an {alpha} {plus} {beta} sandwich conformation. Although both proteins bind to IgG, they do so at different sites on the immunoglobin and it is of considerable biological interest to understand structurally why this is so. 12 refs., 1 fig.

  12. Grand challenge competition to predict in vivo knee loads.

    PubMed

    Fregly, Benjamin J; Besier, Thor F; Lloyd, David G; Delp, Scott L; Banks, Scott A; Pandy, Marcus G; D'Lima, Darryl D

    2012-04-01

    Impairment of the human neuromusculoskeletal system can lead to significant mobility limitations and decreased quality of life. Computational models that accurately represent the musculoskeletal systems of individual patients could be used to explore different treatment options and optimize clinical outcome. The most significant barrier to model-based treatment design is validation of model-based estimates of in vivo contact and muscle forces. This paper introduces an annual "Grand Challenge Competition to Predict In Vivo Knee Loads" based on a series of comprehensive publicly available in vivo data sets for evaluating musculoskeletal model predictions of contact and muscle forces in the knee. The data sets come from patients implanted with force-measuring tibial prostheses. Following a historical review of musculoskeletal modeling methods used for estimating knee muscle and contact forces, we describe the first two data sets used for the first two competitions and summarize four subsequent data sets to be used for future competitions. These data sets include tibial contact force, video motion, ground reaction, muscle EMG, muscle strength, static and dynamic imaging, and implant geometry data. Competition participants create musculoskeletal models to predict tibial contact forces without having access to the corresponding in vivo measurements. These blinded predictions provide an unbiased evaluation of the capabilities and limitations of musculoskeletal modeling methods. The paper concludes with a discussion of how these unique data sets can be used by the musculoskeletal modeling research community to improve the estimation of in vivo muscle and contact forces and ultimately to help make musculoskeletal models clinically useful. PMID:22161745

  13. Grand Challenge Competition to Predict In Vivo Knee Loads

    PubMed Central

    Fregly, Benjamin J.; Besier, Thor F.; Lloyd, David G.; Delp, Scott L.; Banks, Scott A.; Pandy, Marcus G.; D’Lima, Darryl D.

    2013-01-01

    Impairment of the human neuromusculoskeletal system can lead to significant mobility limitations and decreased quality of life. Computational models that accurately represent the musculoskeletal systems of individual patients could be used to explore different treatment options and ultimately to optimize clinical outcome. The most significant barrier to model-based treatment design is validation of model-based estimates of in vivo contact and muscle forces. This paper introduces an annual “Grand Challenge Competition to Predict In Vivo Knee Loads” based on a series of comprehensive publicly available in vivo data sets for evaluating musculoskeletal model predictions of contact and muscle forces in the knee. The data sets come from patients implanted with force-measuring tibial prostheses. Following a historical review of musculoskeletal modeling methods used for estimating knee muscle and contact forces, we describe the first two data sets used for the first two competitions and summarize four subsequent data sets to be used for future competitions. These data sets include tibial contact force, video motion, ground reaction, muscle EMG, muscle strength, static and dynamic imaging, and implant geometry data. Competition participants create musculoskeletal models to predict tibial contact forces without having access to the corresponding in vivo measurements, which are not released until after each year’s competition submissions. These blinded predictions provide an unbiased evaluation of the capabilities and limitations of musculoskeletal modeling methods. The paper concludes with a discussion of how these unique data sets can be used by the musculoskeletal modeling research community to improve the estimation of in vivo muscle and contact forces and ultimately to help make musculoskeletal models clinically useful. PMID:22161745

  14. Interacting topological insulator and emergent grand unified theory

    NASA Astrophysics Data System (ADS)

    You, Yi-Zhuang; Xu, Cenke

    2015-03-01

    Motivated by the Pati-Salam grand unified theory [J. C. Pati and A. Salam, Phys. Rev. D 10, 275 (1974), 10.1103/PhysRevD.10.275], we study (4 +1 )d topological insulators with SU (4 ) ×SU (2) 1×SU (2) 2 symmetry, whose (3 +1 )d boundary has 16 flavors of left-chiral fermions, which form representations (4 ,2 ,1 ) and (4 ¯,1 ,2 ) . The key result we obtain is that, without any interaction, this topological insulator has a Z classification, namely, any quadratic fermion mass operator at the (3 +1 )d boundary is prohibited by the symmetries listed above; while under interaction, this system becomes trivial, namely, its (3 +1 )d boundary can be gapped out by a properly designed short-range interaction without generating nonzero vacuum expectation value of any fermion bilinear mass, or in other words, its (3 +1 )d boundary can be driven into a "strongly-coupled symmetric gapped (SCSG) phase." Based on this observation, we propose that after coupling the system to a dynamical SU (4 ) ×SU (2) 1×SU (2) 2 lattice gauge field, the Pati-Salam GUT can be fully regularized as the boundary states of a (4 +1 )d topological insulator with a thin fourth spatial dimension, the thin fourth dimension makes the entire system generically a (3 +1 )d system. The mirror sector on the opposite boundary will not interfere with the desired GUT, because the mirror sector is driven to the SCSG phase by a carefully designed interaction and is hence decoupled from the GUT.

  15. The MICE grand challenge lightcone simulation - I. Dark matter clustering

    NASA Astrophysics Data System (ADS)

    Fosalba, P.; Crocce, M.; Gaztañaga, E.; Castander, F. J.

    2015-04-01

    We present a new N-body simulation from the Marenostrum Institut de Ciències de l'Espai (MICE) collaboration, the MICE Grand Challenge (MICE-GC), containing about 70 billion dark matter particles in a (3 Gpc h-1)3 comoving volume. Given its large volume and fine spatial resolution, spanning over five orders of magnitude in dynamic range, it allows an accurate modelling of the growth of structure in the universe from the linear through the highly non-linear regime of gravitational clustering. We validate the dark matter simulation outputs using 3D and 2D clustering statistics, and discuss mass-resolution effects in the non-linear regime by comparing to previous simulations and the latest numerical fits. We show that the MICE-GC run allows for a measurement of the BAO feature with per cent level accuracy and compare it to state-of-the-art theoretical models. We also use sub-arcmin resolution pixelized 2D maps of the dark matter counts in the lightcone to make tomographic analyses in real and redshift space. Our analysis shows the simulation reproduces the Kaiser effect on large scales, whereas we find a significant suppression of power on non-linear scales relative to the real space clustering. We complete our validation by presenting an analysis of the three-point correlation function in this and previous MICE simulations, finding further evidence for mass-resolution effects. This is the first of a series of three papers in which we present the MICE-GC simulation, along with a wide and deep mock galaxy catalogue built from it. This mock is made publicly available through a dedicated web portal, http://cosmohub.pic.es.

  16. Lunar and terrestrial planet formation in the Grand Tack scenario.

    PubMed

    Jacobson, S A; Morbidelli, A

    2014-09-13

    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) and taking into account independent geochemical constraints on the mass accreted by the Earth after the Moon-forming event and on the time scale for the growth of Mars, we conclude that the protoplanetary disc at the beginning of the giant impact phase must have had most of its mass in Mars-sized embryos and only a small fraction of the total disc mass in the planetesimal population. From this, we infer that the Moon-forming event occurred between approximately 60 and approximately 130 Myr after the formation of the first solids and was caused most likely by an object with a mass similar to that of Mars. PMID:25114304

  17. Grand canonical Monte Carlo simulation of liquid argon

    NASA Astrophysics Data System (ADS)

    Ruff, Imre; Baranyai, András; Pálinkás, Gábor; Heinzinger, Karl

    1986-08-01

    A grand canonical Monte Carlo procedure with fixed values of the chemical potential ?, volume V, and temperature T, is described which is suitable to simulate simple fluids with only a minor increase in computer time in comparison with canonical (N,V,T) simulations and considerably faster than (N,p,T) ones. The method is rapidly convergent for rather dense systems with a reduced density of about ??3=0.88. The rapid convergence is attained by decreasing the vain attempts in the regime when new particles are added. The chance to find a place for an additional particle is increased by locating the cavities suitable to house a particle with the aid of the Dirichlet-Voronoi polyhedra. As an example, liquid argon is simulated with Lennard-Jones potentials at T=86.3 K and ?=-73.4 J/mol. The simulated density has been found to be 1.468 g/cm3 which is to be compared with the experimental value of 1.425 g/cm3. The same density was obtained by starting the procedure with both 216 and 250 particles in the simulation box of length 2.1895 nm. The pair correlation function is also in very good agreement with both earlier (N,V,T) simulations and diffraction experiments. The configurations obtained are analyzed by the second- and third-order invariants of the even-l spherical harmonics as order parameters characterizing the nearest neighbors of argon atoms. These results as well as some other statistics on the geometry of the coordination sphere indicate that the prevailing cluster geometry in liquid argon is a distorted hexagonal close packed arrangement which is nevertheless distinguishable from face centered cubic or icosahedral clusters distorted to the same degree or more. The surroundings of vacancies, however, are completely random with no characteristic symmetry properties.

  18. Grand unified theories and supersymmetry in particle physics and cosmology

    NASA Astrophysics Data System (ADS)

    de Boer, W.

    A review is given on the consistency checks of Grand Unified Theories (GUT), which unify the electroweak and strong nuclear forces into a single theory. Such theories predict a new kind of force, which could provide answers to several open questions in cosmology. The possible role of such a ``primeval'' force will be discussed in the framework of the Big Bang Theory. Although such a force cannot be observed directly, there are several predictions of GUT's, which can be verified at low energies. The Minimal Supersymmetric Standard Model (MSSM) distinguishes itself from other GUT's by a successful prediction of many unrelated phenomena with a minimum number of parameters. Among them: a) Unification of the couplings constants; b) Unification of the masses; c) Existence of dark matter; d) Proton decay; e) Electroweak symmetry breaking at a scale far below the unification scale. A fit of the free parameters in the MSSM to these low energy constraints predicts the masses of the as yet unobserved superpartners of the SM particles, constrains the unknown top mass to a range between 140 and 200 GeV, and requires the second order QCD coupling constant to be between 0.108 and 0.132. ``The possibility that the universe was generated from nothing is very interesting and should be further studied. A most perplexing question relating to the singularity is this: what preceded the genesis of the universe? This question appears to be absolutely methaphysical, but our experience with metaphysics tells us that metaphysical questions are sometimes given answers by physics.'' A. Linde (1982)

  19. Lunar and terrestrial planet formation in the Grand Tack scenario

    PubMed Central

    Jacobson, S. A.; Morbidelli, 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) and taking into account independent geochemical constraints on the mass accreted by the Earth after the Moon-forming event and on the time scale for the growth of Mars, we conclude that the protoplanetary disc at the beginning of the giant impact phase must have had most of its mass in Mars-sized embryos and only a small fraction of the total disc mass in the planetesimal population. From this, we infer that the Moon-forming event occurred between approximately 60 and approximately 130 Myr after the formation of the first solids and was caused most likely by an object with a mass similar to that of Mars. PMID:25114304

  20. A GRAND DESIGN FOR GALAXY CLUSTERS: CONNECTIONS AND PREDICTIONS

    SciTech Connect

    Cavaliere, A.; Lapi, A.; Fusco-Femiano, R.

    2011-11-20

    We analyze with our entropy-based Supermodel a library of 12 galaxy clusters featuring extended X-ray observations of their intracluster plasma (ICP). The few intrinsic parameters of the model-basically, the central level and the outer slope of the entropy profile-enable us to uniformly derive not only robust snapshots of the ICP thermal state, but also the 'concentration' parameter marking the age of the host dark matter (DM) halo. We test these profiles for consistency with numerical simulations and observations. We find the central and the outer entropy correlate, so that these clusters split into two main classes defined on the basis of low (LE) or high entropy (HE) conditions prevailing throughout the ICP. We also find inverse correlations between the central/outer entropy and the halo concentration. We interpret these in terms of mapping the ICP progress on timescales around 5 Gyr toward higher concentrations, under the drive of the DM halo development. The progress proceeds from HE clusters to LE clusters, toward states of deeper entropy erosion by radiative cooling in the inner regions and of decreasing outer entropy production as the accretion peters out. We propose these radial and time features constitute a cluster Grand Design that we use here to derive a number of predictions. For HE clusters we predict sustained outer temperature profiles. For LEs we expect the outer entropy ramp to bend over; hence the temperature declines before steepening at low z; this feature goes together with an increasing turbulent support, a condition that can be directly probed with the Sunyaev-Zel'dovich effect. We finally discuss the looming out of two intermediate subsets: a wiggled HE-tilde at low z that features central temperature profiles retaining imprints of entropy discharged by active galactic nuclei or deep mergers and high-z LEs where the cosmogony/cosmology had little time to enforce a sharp outer entropy bending.

  1. Density wave triggered star formation in grand design spirals

    NASA Technical Reports Server (NTRS)

    Cepa, J.; Beckman, J. E.; Knapen, J. H.

    1993-01-01

    In normal spiral galaxies the arms are the main sites for star formation. This is the cause of their optical contrast compared with the rest of the disc. The spiral structure can be observed as a higher concentration of H2 regions, neutral gas (both atomic and molecular via CO), dust and stars than in the interarm disc. It seens generally accepted that, at least in grand design spirals, there are density waves in the discs. However, several questions are not clear yet and still under discussion. An important question could be termed the triggering dilemma (by analogy with the 'winding dilemma' raised in the forties): Is the enhanced star formation in the spiral arms triggered by the passage of a system of density waves or is it simply due to the presence of a higher column density of gas there? In the present work, we use triggering in the same sense as the moderate to strong triggering defined by Elmegreen (1992), that is to say that star formation in the arms occurs at a rate faster than that in the interarm zone, relative to the available placental gas. Our group has designed several tests to elucidate whether or not star formation is triggered in the arms with respect to the interarm region and we summarize one of them, that of the ratio of the star formation efficiency in the arms divided by that of the interarm zone at the same galactocentric distance which we may call the relative massive star formation efficiency, where the efficiency is defined using the ratio of the mass of stars (evaluated via the H alpha flux) to the mass of neutral gas, atomic plus molecular (which must be measured with the adequate angular resolution). If the relative efficiency is of order unity, the star formation is proportional to the mass of gas, if some kind of induced star formation is present, the relative efficiency should be considerably larger than unity.

  2. Decontamination of nuclear systems at the Grand Gulf Nuclear Station

    SciTech Connect

    Weed, R.D.; Baker, K.R.

    1996-12-31

    Early in 1994 Management at the Grand Gulf Nuclear Station realized that a potential decontamination of several reactor systems was needed to maintain the commitments to the {open_quotes}As Low As Reasonably Achievable{close_quotes} (ALARA) program. There was a substantial amount of planned outage work required to repair and replace some internals in loop isolation valves and there were inspections and other outage work that needed to be accomplished as it had been postponed from previous outages because of the radiation exposure levels in and around the system equipment. Management scheduled for the procurement specification to be revised to incorporate additional boundary areas which had not been previously considered. The schedule included the period for gathering bids, awarding a contract, and reviewing the contractor`s procedures and reports and granting approval for the decontamination to proceed during the upcoming outage. In addition to the reviews required by the engineering group for overall control of the process, the plant system engineers had to prepare procedures at the system level to provide for a smooth operation to be made during the decontamination of the systems. The system engineers were required to make certain that the decontamination fluids would be contained within the systems being decontaminated and that they would not cross contaminate any other system not being decontaminated. Since these nuclear stations do not have the provisions for decontaminating these systems with using additional equipment, the equipment required is furnished by the contractor as skid mounted packaged units which can be moved into the area, set up near the system being decontaminated, and after the decontamination is completed, the skid mounted packages are removed as part of the contract. Figure 1 shows a typical setup in block diagram required to perform a reactor system decontamination. 1 fig.

  3. The muon component of air showers measured by the KASCADE-Grande Experiment

    NASA Astrophysics Data System (ADS)

    de Souza, V.; van Buren, J.; Apel, W.D.; Arteaga, J.C.; Badea, F.; Bekk, K.; Bertaina, M.; Blümer, J.; Bozdog, H.; Brancus, I.M.; Brūggemann, M.; Buchholz, P.; Chiavassa, A.; Cossavella, F.; Daumiller, K.; 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.; Walkowiak, W.; Weindl, A.; Wochele, J.; Zabierowski, J.

    KASCADE-Grande is a multi detector setup for the investigation of extensive air showers in the primary energy range of the knee including energies around the so-called second knee. With the data of the 700 x 700 sqm large Grande array shower core position, shower direction, and the total number of electrons are reconstructed for events with primary energy above 50 PeV. Among others, the Grande array measures in coincidence with the original KASCADE muon array consisting of 690 sqm shielded scintillators.The data of these detectors are used to reconstruct the total muon number (E_{mu} > 230 MeV) and the muon densities at different radial distances for individual showers, as well as the mean muon lateral distributions at different zenith angular ranges. We report first results of these muon measurements at KASCADE-Grande.

  4. Monitoring Fine Sediment; Grande Ronde and John Day Rivers, 1999 Annual Report.

    SciTech Connect

    Rhodes, Jonathan J.; Greene, M. Jonas; Purser, Michael D.

    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.

  5. US SPACE CAMP CALIFORNIA - DAY CAMP GRAND OPENING WITH KEVIN JONES (WHISMAN SCHOOL) AND LUCRETIA

    NASA Technical Reports Server (NTRS)

    1996-01-01

    US SPACE CAMP CALIFORNIA - DAY CAMP GRAND OPENING WITH KEVIN JONES (WHISMAN SCHOOL) AND LUCRETIA SUTHERLIN (MCNAIR SCHOOL). AMES SPONSORED STUDENTS AND RACHAEL QUIRING (STAFF) - AUTOGRAPH SIGNING BY Astronaut Wally Schirra

  6. Wil Wheaton and the Grand Entrance - Duration: 4 minutes, 7 seconds.

    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...

  7. Status and Trends of the Grand Canyon Population of Humpback Chub

    USGS Publications Warehouse

    Andersen, Matthew E.

    2009-01-01

    The Colorado River Basin supports one of the most distinctive fish communities in North America, including the federally endangered humpback chub (Gila cypha). One of only six remaining populations of this fish is found in Grand Canyon, Arizona. U.S. Geological Survey scientists and their cooperators are responsible for monitoring the Grand Canyon population. Analysis of recently collected data indicates that the number of Grand Canyon adult humpback chub - fish 4 years old and older and capable of reproduction - increased approximately 50 percent between 2001 and 2008. When possible model error is considered, the estimated number of adult chub in the Grand Canyon population is between 6,000 and 10,000. The most likely number is estimated at 7,650 individuals.

  8. 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

  9. 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.

  10. Self-consistent thermodynamics for the Tsallis statistics in the grand canonical ensemble: Nonrelativistic hadron gas

    NASA Astrophysics Data System (ADS)

    Parvan, A. S.

    2015-09-01

    In the present paper, the Tsallis statistics in the grand canonical ensemble was reconsidered in a general form. The thermodynamic properties of the nonrelativistic ideal gas of hadrons in the grand canonical ensemble was studied numerically and analytically in a finite volume and the thermodynamic limit. It was proved that the Tsallis statistics in the grand canonical ensemble satisfies the requirements of the equilibrium thermodynamics in the thermodynamic limit if the thermodynamic potential is a homogeneous function of the first order with respect to the extensive variables of state of the system and the entropic variable z = 1/( q - 1 is an extensive variable of state. The equivalence of canonical, microcanonical and grand canonical ensembles for the nonrelativistic ideal gas of hadrons was demonstrated.

  11. 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.

  12. William Shatner and the Grand Entrance - Duration: 4 minutes, 11 seconds.

    NASA Video Gallery

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

  13. 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...

  14. [Epidemiology of leishmaniasis in Algeria. 7. Visceral leishmaniasis in the Grande Kabylie focus].

    PubMed

    Dedet, J P; Addadi, K; Lannuzel, B

    1977-01-01

    The authors present the results of a survey on visceral leishmaniasis in the Grande Kabylie region (Algeria). With a 2.6 human cases per 100,000 annual prevalence, and a 11.4 per cent incidence of canine leishmaniasis, the Grande Kabylie appears to be the most important focus of visceral leishmaniasis in North Africa. The endemicity ecological factors are discussed and a control program is proposed. PMID:580909

  15. Challenges faced by multidisplinary new investigators on addressing grand challenges in global health

    PubMed Central

    2014-01-01

    Background The grand challenges approach aims to spark innovative and transformative strategies to overcome barriers to significant global health issues. Grand Challenges Canada endorses an ‘Integrated Innovation™’ approach that focuses on the intersection of scientific/technological, social and business innovation. In this article we explore themes emerging from a dialogue between the authors, who are multidisciplinary recipients of the ‘Rising Stars in Global Health’ award from Grand Challenges Canada, regarding benefits of engaging in integrated innovation research, and recommendations for how this approach may develop in the future. Discussion Our dialogue followed a semi-structured interview format that addressed three topics: 1) reflections on applying an Integrated Innovation™ approach for global health; 2) thoughts on participation in the Grand Challenges 2012 meeting; and 3) authors’ visions of Grand Challenges Canada and the Grand Challenge movement towards 2020. The dialogue was transcribed verbatim and we used thematic analysis techniques to identify, analyze and report themes in the data. Benefits of working using the Grand Challenges approach centered on two themes: a) the potential for scientific breakthrough and b) building interdisciplinary collaborations and a community of scholars. Challenges and opportunities for Grand Challenges in moving forward included: a) capacity building, particularly regarding Integrated Innovation™ and scale-up planning; b) interdisciplinary and international mentorship for new investigators; and c) potential for future commercialization. Conclusions Our discussion highlighted that Integrated Innovation™ offers the opportunity to develop new theories, methods and approaches to global health while simultaneously fostering a collaborative spirit grounded in international, interdisciplinary collaborations. However, the arguable over-emphasis on corporatization poses a major challenge for new investigators. We propose a more balanced way forward that can harness technology to foster mentorship across time and space to support the development of such skills and ideas among new investigators. PMID:24735677

  16. A grand convergence in mortality is possible: comment on Global Health 2035

    PubMed Central

    Norheim, Ole Frithjof

    2014-01-01

    The grand challenge in global health is the inequality in mortality and life expectancy between countries and within countries. According to Global Health 2035, the Lancet Commission celebrating the 20th anniversary of the World Development Report (WDR) of 1993, the world now has the unique opportunity to achieve a grand convergence in global mortality within a generation. This article comments on the main findings and recommendations of the Global Health 2035. PMID:24596900

  17. The Evolution of the Grand Tack's Main Belt through the Solar System's Age

    NASA Astrophysics Data System (ADS)

    Deienno, Rogerio; Gomes, Rodney S.; Morbidelli, Alessandro; Walsh, Kevin J.; Nesvorny, David

    2015-05-01

    The Asteroid Belt is marked by the mixture of physical properties among its members, as well as its peculiar distribution of orbital eccentricities and inclinations. Formation models of the Asteroid Belt show that its formation is strongly linked to the process of terrestrial planet formation. The Grand Tack model presents a possible solution to the conundrum of reconciling the small mass of Mars with the properties of the Asteroid Belt, providing also a scenario for understanding the mixture of physical properties of the Belt objects. Regarding the orbital distribution of these objects, the Grand Tack model achieved good agreement with the observed inclination distribution, but failed in relation to the eccentricities, which are systematically skewed towards too large values at the end of the dynamical phase described by the Grand Tack model. Here, we evaluate the evolution of the orbital characteristics of the Asteroid Belt from the end of the phase described by the Grand Tack model, throughout the subsequent evolution of the Solar System. Our results show the concrete possibility that the eccentricity distribution after the Grand Tack phase is consistent with the current distribution. Finally, favorable and unfavorable issues faced by the Grand Tack model will be discussed, together with the influence of the primordial eccentricities of Jupiter and Saturn. Acknowledgement: FAPESP.

  18. Grand-parenting experiences among adults with a history of depression: a mixed-methods study

    PubMed Central

    Izquierdo, Adriana; Miranda, Jeanne; Bromley, Elizabeth; Sherbourne, Cathy; Ryan, Gery; Kennedy, David; Wells, Kenneth

    2015-01-01

    Objective Grand-parenting is an important social role but how adults with a history of depression experience grand-parenting is unknown; we describe grand-parenting experiences reported by an ethnically-diverse sample of adults with a history of depression. Method Mixed-methods study using semi-structured interviews of adults at 10-year follow-up and quantitative data collected over 9 years from 280 systematically-sampled participants from a longitudinal, multi-site trial of quality-improvement interventions for depressed primary care patients; of 280, 110 reported noncustodial grand-parenting experiences. Results Of 110 adults reporting grand-parenting experiences, 90 (82%) reported any positive experience such as special joy; 57 (52%) reported any stressful experience such as separation; 27 (34%) reported mixed experiences. Adults with chronic or recent depression were significantly more likely than their respective counterparts to report any stressful experience (p<0.05). There was no significant association between depression status and reporting a positive experience. Conclusion(s) Grand-parenting was a highly salient and positive experience as reported by ethnically-diverse adults 10 years after being identified as depressed in primary care. Depression status was associated with reporting stressful but not positive experiences. Specific themes underlying positive and stressful experiences may have implications for developing strategies to enhance quality of life for adults with a history of depression who are grandparents. PMID:25680755

  19. Short-term dynamical evolution of grand-design spirals in barred galaxies

    NASA Astrophysics Data System (ADS)

    Baba, Junichi

    2015-12-01

    We investigate the short-term dynamical evolution of stellar grand-design spiral arms in barred spiral galaxiesusing a three-dimensional (3D) N-body/hydrodynamic simulation. Similar to previous numerical simulations of unbarred, multiple-arm spirals, we find that grand-design spiral arms in barred galaxies are not stationary, but rather dynamic. This means that the amplitudes, pitch angles, and rotational frequencies of the spiral arms are not constant, but change within a few hundred million years (i.e. the typical rotational period of a galaxy). We also find that the clear grand-design spirals in barred galaxies appear only when the spirals connect with the ends of the bar. Furthermore, we find that the short-term behaviour of spiral arms in the outer regions (R > 1.5-2 bar radius) can be explained by the swing amplification theory and that the effects of the bar are not negligible in the inner regions (R < 1.5-2 bar radius). These results suggest that although grand-design spiral arms in barred galaxies are affected by the stellar bar, the grand-design spiral arms essentially originate not as bar-driven stationary density waves, but rather as self-excited dynamic patterns. We imply that a rigidly rotating grand-design spiral could not be a reasonable dynamical model for investigating gas flows and cloud formation even in barred spiral galaxies.

  20. Lower Cambrian grand cycles of the southwestern Great Basin, U. S. A

    SciTech Connect

    Mount, J.F.; Hunt, D.L.; Dienger, J. ); Green, L.R. )

    1991-02-01

    Depositional Grand Cycles are a prominent feature of Cambrian strata of western North America. Consisting of a lower siliciclastic half-cycle and an overlying carbonate half-cycle, these sequences appear to record regional deepening-shoaling events on a broadly subsiding Cambrian passive margin shelf. The Lower Cambrian Grand Cycles of the White-Inyo and Death Valley regions differ greatly from their Middle and Upper Cambrian counterparts throughout the Cordillera. These differences are manifested in the following ways: (1) Lower Cambrian siliciclastic half-cycles are relatively carbonate poor and were deposited primarily in deeper subtidal shelf settings; (2) siliciclastic half-cycle deposition is dominated by episodic storm processes, in contrast to the meter-scale, peritidal shallowing-upward cyclicity characteristic of younger Grand Cycles: (3) Grand Cycle boundaries are more diffuse and, in many cases, difficult to identify in more cratonward sections, and (4) trilobite zone boundaries appear to cross Lower Cambrian Grand Cycle boundaries appear to cross Lower Cambrian Grand Cycle boundaries, indicating that the cycles are not regionally correlative, unconformity bounded sequences. The depositional modeling indicates that these differences can be attributed to paleogeographic factors unique to the Early Cambrian. These include relatively rapid thermotectonic subsidence of the nascent Early Cambrian passive margin coupled with a high rate of eustatic sea level rise, high sediment yields off of the North American craton, and a relatively narrow Early Cambrian shelf.