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1

Four New Hypancistrus (Siluriformes: Loricariidae) from Amazonas, Venezuela  

E-print Network

Four New Hypancistrus (Siluriformes: Loricariidae) from Amazonas, Venezuela JONATHAN W. ARMBRUSTER. lunaorum are described based on specimens from the upper Ri´o Orinoco of southern Venezuela. Hypancistrus la base de especi´menes provenientes de la cuenca alta del ri´o Orinoco en el sur de Venezuela

Armbruster, Jonathan W.

2

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

PubMed Central

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

Bonato, Karine Orlandi; Fialho, Clarice Bernhardt

2014-01-01

3

Evidence of niche partitioning under ontogenetic influences among three morphologically similar siluriformes in small subtropical streams.  

PubMed

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

Bonato, Karine Orlandi; Fialho, Clarice Bernhardt

2014-01-01

4

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

PubMed

Abstract 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

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

2014-04-14

5

Grand Canyon  

Atmospheric Science Data Center

... (lower) half of the images, other landmarks include Lake Powell, on the left, and Humphreys Peak and Sunset Crater National Monument on ... December 31, 2000 - Grand Canyon and Lake Powell. project: MISR category: gallery ...

2014-05-15

6

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

PubMed

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

Hao, Rong-Chao; Wang, Guo-Hua

2014-10-16

7

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

Microsoft Academic Search

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

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

2009-01-01

8

New dactylogyrids (Monogenea) parasitizing the gills of catfishes (Siluriformes) from the Amazon River basin in Peru.  

PubMed

Three dactylogyrid (Monogenea) species are described from the gills of siluriform fishes from the rivers around Iquitos, tributaries of the Amazon River in Peru: Demidospermus centromochli n. sp. from Centromochlus heckelii (de Filippi) (Auchenipteridae) and Demidospermus macropteri n. sp. and Ameloblastella unapi n. sp. from Calophysus macropterus (Lichtenstein) (Pimelodidae). The new species of Demidospermus differ from their congeners in having 2 different hook shapes. Ameloblastella unapi n. sp. differs from the other 3 species of the genus in having anchors with an elongate, straight shaft and a short point that forms a 90 degrees angle, a coiled (counterclockwise) male copulatory organ with 13-14 rings, and a coiled vaginal tube. Based on the present study, Pseudovancleaveus Franca, Issac, Pavanelli, and Takemoto, 2003, is regarded as a junior subjective synonym of Ameloblastella Kritsky, Mendoza-Franco, and Scholz, 2000. The finding of Demidospermus and Ameloblastella spp. on these siluriforms extends our host and geographic knowledge of species of these monogenean genera to Peru. PMID:19215149

Mendoza-Franco, Edgar F; Scholz, T

2009-08-01

9

GRAND RIVER Winter 2014  

E-print Network

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

Thompson, Michael

10

The complete mitochondrial genome sequence of Hemibagrus sp. (Siluriformes: Bagridae), molecular data for species identification.  

PubMed

Abstract In this study, we determined and described the complete mitogenome sequence of Hemibagrus sp. for the first time, which is 16,513?bp in length, and contains 37 genes, including 13 protein-coding genes, 2 rRNAs, 22 tRNAs, 1 origin of replication on the light-strand (OL) and a putative control region. The overall base composition was 31.1% A, 26.9% T, 26.9% C, 15.1% G, with a slight AT bias (58.0%). All protein-coding genes shared the start codon ATG, except for COI, which began with GTG. The tRNA-Ser(UGC) couldn't be folded into the typical cloverleaf secondary structure because its dihydrouridine arm is replaced by a simple loop. These results are expected to provide useful molecular data for species identification and further phylogenetic studies of Bagridae and Siluriformes. PMID:25319298

Zhou, Can-Lin; Tian, Juan; Yang, Chang-Geng

2014-10-16

11

The Grand Staircase  

NSDL National Science Digital Library

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

Blakey, Ronald

12

Grand Opening Celebration  

E-print Network

Exercise physiology lab with DEXA machine Specimen processing room and phlebotomy stations Expert resources such as: clinical research nurses, nurse practitioner, clinical research coordinators, exerciseGrand Opening Celebration The UC Davis Clinical and Translational Science Center (CTSC) is proud

Leistikow, Bruce N.

13

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

NASA Astrophysics Data System (ADS)

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.

Pinton, Aurlie; Fara, Emmanuel; Otero, Olga

2006-01-01

14

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

PubMed

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

Ratmuangkhwang, Sahat; Musikasinthorn, Prachya; Kumazawa, Yoshinori

2014-10-01

15

Rio Grande project partnerships  

E-print Network

Life Research and AgriLife Extension Service, have worked to assess the value of the El Morillo Drain to show local cities and residents the benefit received from the drain?s existence. Annual benefits are estimated to be from $40 million to over $100... Arroyo Colorado proj- ects under way to help improve the water quality of the arroyo. Photo by Brad Cowan, Texas AgriLife Extension Service _ tx H2O | pg. 22 Rio Grande project partnerships Rio Grande Basin Initiative http...

Supercinski, Danielle

2008-01-01

16

Grand Canyon Explorer  

NSDL National Science Digital Library

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

1994-01-01

17

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

18

Democracy and "Grand" Corruption.  

ERIC Educational Resources Information Center

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)

Rose-Ackerman, Susan

1996-01-01

19

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...

20

The Grand Canyon  

NSDL National Science Digital Library

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

Brieske, Joel A.

2002-01-01

21

MALE RIO GRANDE WILD TURKEY  

E-print Network

217 MALE RIO GRANDE WILD TURKEY HABITAT CHARACTERISTICS IN THE TEXAS PANHANDLE AND SOUTHWESTERN Rio Grande wild turkeys (Meleagris gallopavo intermedia) in the northern extent of their native range habitat used for different behaviors (displaying, loafing, and foraging) by male Rio Grande wild turkeys

22

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

PubMed

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 (Mller & 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

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

2012-06-01

23

A new genus and species of proteocephalidean (Cestoda) from Clarias catfishes (Siluriformes: Clariidae) in Africa.  

PubMed

A new proteocephalidean cestode is described from 2 catfishes, Clarias gariepinus (type host) and C. cf. anguillaris (Siluriformes: Clariidae), from Ethiopia (type locality), Sudan, Tanzania, and Zimbabwe, and a new genus, Barsonella, is proposed to accommodate it. The genus belongs to the Proteocephalinae because its genital organs (testes, ovary, vitellarium, and uterus) are situated in the medulla. Barsonella lafoni, the type and only species of the new genus, is characterized mainly by the possession of an additional opening of each sucker; circular musculature on the anterior margin of suckers, serving as a sphincter; a small thin-walled glandular apical organ; absence of well-developed osmoregulatory canals in mature, pregravid, and gravid proglottids; and a large strobila, up to 173 mm long and 3.2 mm wide. Species of Marsypocephalus Wedl, 1861 (Marsypocephalinae), other large-sized proteocephalidean tapeworms occurring sympatrically in African catfishes (Clarias and Heterobranchus) and also possessing a sphincter-like, circular musculature on the anterior part of suckers, differ from B. lafoni in the absence of an additional sucker opening and glandular apical organ, the cortical position of the testes, well-developed osmoregulatory canals throughout the strobila, and a large cirrus sac. Proteocephalus glanduligerus (Janicki, 1928), another cestode parasitic in Clarias spp. in Africa, is much smaller than B. lafoni (maximum length 15 mm), has suckers without additional opening and circular musculature on the suckers, a large-sized glandular organ, much larger than suckers, and well-developed osmoregulatory canals. Comparison of partial sequences of the 28S rRNA gene for 7 samples of B. lafoni from 2 different hosts and 4 localities in Ethiopia, Sudan, and Tanzania has shown a very low genetic variability. In a limited phylogenetic analysis, B. lafoni formed a clade with Corallobothrium solidum Fritsch, 1886 (Proteocephalidae: Corallobothriinae), an African electric catfish parasite. This clade was the sister group of almost all Neotropical taxa from pimelodid and other catfishes. PMID:18576867

de Chambrier, Alain; Scholz, Toms; Beletew, Moges; Mariaux, Jean

2009-02-01

24

The Grand Challenge  

NSDL National Science Digital Library

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

2014-09-18

25

Grand alliance HDTV  

NASA Astrophysics Data System (ADS)

Terrestrial broadcast television in the United States has remained essentially unchanged in the last fifty years except for the addition of color and stereo sound. Today, personal computers are addressing the need for random access of high resolution images and CD quality audio. Furthermore, advances in digital video compression and digital communication technology have cleared the way toward offering high resolution video and audio services to consumers using traditional analog communications channels. In 1987, the U.S. Federal Communications Commission (FCC) chartered an advisory committee to recommend an advanced television system for the United States. From 1990 to 1992, the Advanced Television Test Center tested four all-digital systems, one analog High Definition Television (HDTV) system, and one enhancement NTSC system using broadcast and cable television environment simulators. The formation of the HDTV Grand Alliance in May of 1993 resulted from the withdrawal of the only analog HDTV system from the competition and a stalemate between the other four all- digital systems. The HDTV Grand Alliance system is composed of the best components from previously competing digital systems demonstrated to the FCC. Moving Pictures Experts Group (MPEG-2) syntax is used with novel encoding techniques to deliver a set of video scanning formats for a variety of applications. This paper describes the important features and concepts embodied in the HDTV Grand Alliance system.

Petajan, Eric D.

1995-12-01

26

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

PubMed

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

Al Gil de Pertierra, Alicia; de Chambrier, Alain

2013-06-01

27

The Rio Grande conservatory  

SciTech Connect

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

Kriescher, P.; Mazria, E.

2000-04-01

28

Requiem for the grand round.  

PubMed

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

Stanyon, Maham; Khan, Shahid Anis

2015-02-01

29

Two New Species of Noturus (Siluriformes: Ictaluridae) from the Tennessee River Drainage: Description, Distribution, and Conservation Status  

E-print Network

madtoms (Etnier and Jenkins, 1980; Grady and LeGrande, 1992; Burr and Stoeckel, 1999), only three. Genetic (Grady and LeGrande, 1992; Hardman, 2004; Grady, pers. obs.) and karyotypic data (LeGrande, 1981; Grady and LeGrande, 1992) confirmed the hypothesis of morphological conservatism among madtoms

Hulsey, C. Darrin

30

Grand Challenges For Engineering  

NSDL National Science Digital Library

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

31

The Grand Canyon  

NSDL National Science Digital Library

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

32

Theoretical modeling of grand minima  

NASA Astrophysics Data System (ADS)

We explore whether the flux transport dynamo model of solar cycles can explain the occurrence of grand minima. If fluctuations in the Babcock-Leighton process make the poloidal field at the end of a cycle fall to sufficiently low values, then that can cause a grand minimum (Choudhuri and Karak 2009, RAA 9, 953). Additionally, if the meridional circulation of the Sun falls to a sufficiently low value, then that also can push the dynamo into a grand minimum if the diffusivity is sufficiently high (Karak 2010, ApJ 724, 1021). Considering Gaussian fluctuations in both poloidal field generation and in meridional circulation, we calculate the probability of occurrence of grand minima and find our results to be consistent with the observational claim that there have been about 27 grand minima in the last 11,000 years (Choudhuri and Karak 2012, under preparation).

Choudhuri, Arnab Rai; Karak, Bidya Binay

2012-07-01

33

DARPA Grand Challenge 2005  

NSDL National Science Digital Library

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

34

Grand Canyon Explorer: The Geology of the Grand Canyon  

NSDL National Science Digital Library

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

Ribokas, Bob

35

Nuclear Proliferation and Grand Challenges  

SciTech Connect

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.

McCarthy, Kathy

2009-01-01

36

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

PubMed

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

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

2005-01-01

37

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

PubMed

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

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

2009-01-01

38

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

PubMed

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

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

2011-01-01

39

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

PubMed

The type-specimens of Parspina argentinensis (Szidat, 1954) from Pimelodus maculatus Lacpde, and new material from Iheringichthys labrosus (Ltken), Parapimelodus valenciennis (Ltken), Pimelodella gracilis (Valenciennes), Pimelodus albicans (Valenciennes), P. argenteus Perugia and P. maculatus caught in the basins of the La Plata and Paran 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 Paran 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

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

2011-01-01

40

Grand Challenges in Organismal Physiology  

NSDL National Science Digital Library

This article is on pages 169 and 171-172 of the PDF file. A Summary of the thought and inniatives behind the NSF's Grand Challenges in Organismal Physiology. This program is designed to bring the opinions of those studying organismal biology together to identify the challenges facing the field and how best to address them.

PhD Hannah V. Carey (Univ Wisconsin-Madison Sch Vet Med Dept Comp Biosci)

2011-10-01

41

Grand Challenges in Authorization Systems  

E-print Network

.ics.utsa.edu © Ravi Sandhu World-Leading Research with Real Grand Challenges in Authorization Systems . Ravi Sandhu.profsandhu.com www.ics.utsa.edu Leading Research with Real-World Impact! #12;Mutually Supportive Technologies AUTHENTICATION CRYPTOGRAPHY ASSURANCE © Ravi Sandhu World-Leading Research with Real INTRUSION DETECTION SECURITY

Sandhu, Ravi

42

Grand rip and grand bang/crunch cosmological singularities  

NASA Astrophysics Data System (ADS)

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

Fernndez-Jambrina, L.

2014-09-01

43

A parallel java grande benchmark suite  

Microsoft Academic Search

Increasing interest is being shown in the use of Java for large scale or Grande applications. This new use of Java places specific demands on the Java execution environments that can be tested using the Java Grande benchmark suite [5], [6], [7]. The large processing requirements of Grande applications makes parallelisation of interest. A suite of parallel benchmarks has been

L. A. Smith; J. Mark Bull; J. Obdrzlek

2001-01-01

44

A Parallel Java Grande Benchmark Suite  

Microsoft Academic Search

Increasing interest is being shown in the use of Java for large scale or Grande applications. This new use of Java places speci.c demands on the Java execution environments that can be tested using the Java Grande benchmark suite [5], [6], [7]. The large processing requirements of Grande applications makes parallelisation of interest. A suite of parallel benchmarks has been

L. A. Smith; J. M. Bull; J. Obdrizalek

2001-01-01

45

Grand Canyon: The Hidden Secrets  

NSDL National Science Digital Library

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

46

Winning the DARPA Grand Challenge  

Microsoft Academic Search

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

Sebastian Thrun

2006-01-01

47

Grand Canonical Monte Carlo Model  

NSDL National Science Digital Library

The Grand Canonical Monte Carlo Model illustrates grand canonical ensemble (µVT) Monte Carlo simulations: the chemical potential, volume and temperature are the system constraints. This means that the system has porous and diabatic walls, exchanging molecules and heat with a reservoir at constant chemical potential and temperature. The molecules interact through the Lennard-Jones. potential and fluid states at densities 0.0025 ? ? ? 0.85 and temperatures T ? 0.70 can be simulated. Although the volume is kept constant, the number of molecules fluctuates and so does the density. The aim is to reach a chemical potential approaching the imposed one. The input fields can be edited to probe different regions of the phase diagram. Chemical potentials, activity coefficients, Helmholtz free energies, entropies and their excess contributions are worked out. The Grand Canonical Monte Carlo Model was developed using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the jar file will run the program if Java is installed. You can modify this simulation if you have EJS installed by right-clicking within the map and selecting "Open Ejs Model" from the pop-up menu item.

Fernandes, Fernando S.

2014-05-21

48

Grand canonical Molecular Dynamics Simulations  

E-print Network

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

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

2011-01-01

49

Grand Challenges of Enterprise Integration  

SciTech Connect

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.

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

2001-04-01

50

What makes Grande1 retrotransposon different?  

Microsoft Academic Search

Grande1 elements constitute a family of Ty3 retrotransposons present in the Zea genus in more than 1000 copies in Zea diploperennis\\u000a and maize. The sequences of three Grande1 flanking regions, two from Z. diploperennis and one from maize, reveal transposable\\u000a elements as insertion targets, suggesting a preferential integration of Grande1 elements into other transposable elements.\\u000a These retrotransposons are remarkable for

Jos A. Martnez-Izquierdo; Jos Garca-Martnez; Carlos M. Vicient

1997-01-01

51

American Experience: Grand Coulee Dam  

NSDL National Science Digital Library

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

2012-04-27

52

Grand unification of neutron stars  

PubMed Central

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 Chandras next decade in this field. PMID:20404205

Kaspi, Victoria M.

2010-01-01

53

Hyacinths Choke the Rio Grande  

NASA Technical Reports Server (NTRS)

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

2002-01-01

54

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

55

Evaluating Brazilian Grand Strategy under Lula  

Microsoft Academic Search

This article analyzes Brazilian grand strategy under President Luiz Incio Lula da Silva. During Lula's eight years in office, he pursued a multitiered grand strategy aimed at hastening the transition from U.S. and Western hegemony to a multipolar order more favorable to Brazilian interests. Lula did so by emphasizing three diplomatic strategies: soft balancing, coalition building, and seeking to position

Hal Brands

2011-01-01

56

MOBILITY IN GRAND JUNCTION DAVID SCHRANK  

E-print Network

and the preparation of this report. The contributions of these individuals are acknowledged and appreciated. Colorado A .........................................................................................................45 #12;v LIST OF FIGURES 1 Peak Hour Mobility Levels on Grand Junction Arterial Streets ................2 2 Seven Arterial Corridors in Grand Junction .............................................5 3

57

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

58

GRAND MYCOLOGY SYMPOSIUM Photo: Becky Kirkland, NC State Communications Services  

E-print Network

GRAND MYCOLOGY SYMPOSIUM #12;Photo: Becky Kirkland, NC State Communications Services #12;Photo Services #12;Photo: Becky Kirkland, NC State Communications Services #12;GRAND MYCOLOGY SYMPOSIUM RECEPTION

59

Wintertime meteorology of the Grand Canyon region  

SciTech Connect

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.

Whiteman, C.D.

1992-09-01

60

33 CFR 117.633 - Grand River.  

Code of Federal Regulations, 2014 CFR

...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Michigan 117.633 Grand River. (a) Public vessels of the United States, state or local vessels used for public...

2014-07-01

61

Aspects of grand unified and string phenomenology  

E-print Network

Explored in this report is the essential interconnectedness of Grand Unified and String Theoretic Phenomenology. In order to extract a modeled connection to low-energy physics from the context of superstring theory, it is presently necessary...

Walker, Joel Wesley

2005-11-01

62

Grand Strategies on the Korean Peninsula  

E-print Network

that lived through the Korean War, and whose views of theKorean grand strategy is still struggling with the collapse of the Cold WarWar order in Europe, it took nearly a decade before an op- South Korean

HAGGARD, Stephen

2012-01-01

63

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

PubMed

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

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

2012-06-01

64

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

Nomasanguinicola canthoensis gen. et sp. n. infects the branchial vessels of bighead catfish, Clarias macrocephalus Gnther (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

Truong, Triet Nhat; Bullard, Stephen A

2013-07-01

65

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

PubMed

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

Pinton, Aurlie; Agnse, Jean-Franois; Paugy, Didier; Otero, Olga

2013-03-01

66

Urban Water Conservation along the Rio Grande  

E-print Network

. Combined, meas- Urban Water Conservation along the Rio Grande Introduction Albuquerque 3 8.8 inches in Las Cruces and El Paso, increasing to 26.6 inches in Brownsville. Although the river flowing through the El Paso area receives some snowmelt... Urban Water Conservation along the Rio Grande THE TEXAS A&M UNIVERSITY SYSTEM NEW MEXICO STATE UNIVERSITY An Inventory of Water Conservation Programs TR 269 SP 201 Valeen Silvy, 1 Ronald Kaiser, 2 Bruce Lesikar 3 and Craig Runyan...

Silvey, Valeen; Kaiser, Ronald; Lesikar, Bruce; Runyan, Craig

2004-01-01

67

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

Microsoft Academic Search

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

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

1996-01-01

68

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2010-02-08

69

Origin of Grand Minima in Sunspot Cycles  

NASA Astrophysics Data System (ADS)

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 (C14 and Be10) 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.

Choudhuri, Arnab Rai; Karak, Bidya Binay

2012-10-01

70

Grand challenges in modeling and simulation  

NASA Astrophysics Data System (ADS)

Few argue with the need for modeling and simulation (M&S) to better or more completely represent current and expected military operations. The challenge is to decide where to make specific improvements in M&S representation and functionality within time, funding, technology, and research limitations. So, it is natural to select key areas - Grand Challenges - for a significant evolution in M&S where a major effort of many at considerable cost is needed to deal with the critical issues ahead. This paper selects three proposed and related Grand Challenges. First, M&S Depiction of Information and Effects-Based Operations, as a Grand Challenge, will assist in creating sufficiently realistic battlespaces for M&S users. Second, M&S Support to Crisis Response and Military Operations, as a Grand Challenge, is a key area that will help the Department of Defense meet transformation goals. Third, Effective Development of Future Simulations, as a Grand Challenge, will set the standards by which future M&S improvements and new M&S programs will be acquired to ensure needed simulations are delivered on time and at desired cost.

Gordon, Steven C.

2002-07-01

71

Origin of grand minima in sunspot cycles.  

PubMed

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

Choudhuri, Arnab Rai; Karak, Bidya Binay

2012-10-26

72

See-saw and grand unification  

E-print Network

I review the profound connection between the see-saw mechanism for neutrino masses and grand unification. This connection points naturally towards SO(10) grand unified theory. The emphasis here is on the supersymmetric theory, but I also discuss salient features of its split supersymmetry version and ordinary non-supersymmetric SO(10). Particular attention is paid to the crucial issue of the minimal such theory, i.e. the question of the Higgs sector needed to break SO(10) down to the Minimal Supersymmetric Standard Model or the Standard Model. Some essential features of the see-saw mechanism are clarified, in particular its precise origin at the high scale.

Goran Senjanovic

2005-01-26

73

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

PubMed Central

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

2013-01-01

74

Grand Unification with and without Supersymmetry  

SciTech Connect

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.

Melfo, Alejandra [CFF, Universidad de Los Andes, Merida (Venezuela); Institute J. Stefan, Ljubljana (Slovenia)

2007-06-19

75

Grand Challenges for the 21st Century  

E-print Network

Chicago, Millennium Park 200 North Columbus Drive · Chicago, Illinois 60601 Summit Program #12;prese talks over a day and a half, with discussion panels following several of the talks and a wrap-up session the Chicago summit, a wrap-up report will be available online at www.iit.edu/grand_challenges. our experiences

Heller, Barbara

76

Grand County Council June 6, 2006  

E-print Network

Nate Knight, Jim Lewis, Rex Tanner, Judy Carmichael, Jerry McNeely, Audrey Graham with Grand County Clerk/Auditor Fran Townsend and Diana Carroll. Elected Official Reports A. Discussion of Need and they should be filed in that office. Happy requested that Diana Carroll and Pat Byrd attend the training

Tipple, Brett

77

Transforming the UF General Education Program: Grand  

E-print Network

from set of 25 core courses · Foster intellectual community through the study of common coursesTransforming the UF General Education Program: Grand Challenges Courses Bernard Mair Professor extinction at many research universities · Needs to be intellectually integrated to demonstrate connections

Pilyugin, Sergei S.

78

The Grand Challenges in Socially Assistive Robotics  

Microsoft Academic Search

Socially Assistive Robotics focuses on helping hu- man users through social rather than physical interaction (1). This paper describes the broad scope of socially assistive robotics, focusing on a general description of robotic technologies that have been and are currently being developed to assist people with disabilities. The paper then proposes the grand challenges of this field, and a list

Adriana Tapus; Maja J Mataric; Brian Scassellati

79

Monopoles of SU(15) grand unification  

SciTech Connect

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.

Pal, P.B.

1991-03-01

80

Investigative Case - "Rio Grande Wildlife Refuge"  

NSDL National Science Digital Library

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

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

81

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...

82

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...

83

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...

84

Map Your Way to the Grand Canyon  

ERIC Educational Resources Information Center

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

Yoder, Holly

2005-01-01

85

Public Health Grand Rounds Date Topic Speaker  

E-print Network

2013-2014 Public Health Grand Rounds Date Topic Speaker Tuesday Feb 4 th , 2014 8:00-9:00am Public, Associate Professor DFPM/Division of Public Health University of Utah Scott Benson, MD, MPH, PhD Assistant Professor DFPM/Division of Public Health University of Utah Windy Tanner, PhD © DFPM/Division of Public

86

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...

87

Reintroduction of Aedes aegypti into Grand Cayman.  

PubMed

In October 2002 Aedes aegypti was detected on Grand Cayman after an absence of 5 years. This study outlines the techniques used by the Mosquito Research & Control Unit of the Cayman Islands to monitor the reintroduction of Ae. aegypti and to determine the extent of the new infestation. Suggestions are made for improvements of port disinsection activities to minimize further introductions. PMID:19852214

Wheeler, Alan S; Petrie, William D; Malone, David

2009-09-01

88

Grand designs The SGC's 1000th protein  

E-print Network

Grand designs The SGC's 1000th protein structure released Past presents Christmas books from Henry. They pioneered `rational drug design' ­ investigating specific molecular targets for potential drugs, to help the lungs of preterm babies. Ralph Lainson, funded by us since 1964, has transformed our

Rambaut, Andrew

89

Grand Valley Graduates Rate College Services.  

ERIC Educational Resources Information Center

A survey of students graduated from Grand Valley State Colleges (GVSC) in the spring of 1974 was conducted to determine students' reactions to various offices and processes such as registration and counseling. Students were asked to rate 19 offices and services on an "excellent" to "poor" scale, to indicate if they had had no contact with the

Grand Valley State Colleges, Allendale, MI. Office of Institutional Analysis.

90

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

91

25. VIEW OF GRAND CANAL, SHOWING PAPAGO FREEWAY REALIGNMENT, EAST ...  

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

25. VIEW OF GRAND CANAL, SHOWING PAPAGO FREEWAY REALIGNMENT, EAST OF 32ND STREET IN PHOENIX. Photographer: Kevin Kreisel-Coons, May 1990 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

92

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

93

Radiocarbon dates from the Casa Grande. Final report  

SciTech Connect

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.

Andresen, J.M.

1981-01-01

94

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

95

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

96

LE GRAND TH EME DE FERMAT  

E-print Network

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

Faccanoni, Gloria

97

Drives : les grands thormes 20 septembre 2013  

E-print Network

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

Mironescu, Petru

98

Geology Fieldnotes: Grand Canyon National Park, Arizona  

NSDL National Science Digital Library

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

99

Lithospheric structure of the Rio Grande rift.  

PubMed

A high-resolution, regional passive seismic experiment in the Rio Grande rift region of the southwestern United States has produced new images of upper-mantle velocity structure and crust-mantle topography. Synthesizing these results with geochemical and other geophysical evidence reveals highly symmetric lower-crustal and upper-mantle lithosphere extensional deformation, suggesting a pure-shear rifting mechanism for the Rio Grande rift. Extension in the lower crust is distributed over a region four times the width of the rift's surface expression. Here we propose that the laterally distributed, pure shear extension is a combined effect of low strain rate and a regionally elevated geotherm, possibly abetted by pre-existing lithospheric structures, at the time of rift initiation. Distributed extension in the lower crust and mantle has induced less concentrated vertical mantle upwelling and less vigorous small-scale convection than would have arisen from more localized deformation. This lack of highly focused mantle upwelling may explain a deficit of rift-related volcanics in the Rio Grande rift compared to other major rift systems such as the Kenya rift. PMID:15729338

Wilson, David; Aster, Richard; West, Michael; Ni, James; Grand, Steve; Gao, Wei; Baldridge, W Scott; Semken, Steve; Patel, Paresh

2005-02-24

100

The Grand Challenge: Simulating Human Vision  

NSDL National Science Digital Library

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

2014-09-18

101

The last grand tour opportunity to Pluto  

NASA Technical Reports Server (NTRS)

An automated mission design program permits a thorough examination of gravity-assist trajectories such as the Voyager II flight to Jupiter, Saturn, Uranus and Neptune. The program is applied to the automated design of multiple encounter trajectories to the far outer planets. The most significant result is that the last four-planet grand tour opportunity occurs in 1996 and includes encounters with Jupiter, Uranus, Neptune and Pluto. Other mission designs include Jupiter and one or two other planets and have characteristically short flight times.

Longuski, J. M.; Williams, S. N.

1991-01-01

102

Local Grand Unification and String Theory  

SciTech Connect

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.

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

2010-02-10

103

Resurrection of grand unified theory baryogenesis.  

PubMed

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

Fukugita, M; Yanagida, T

2002-09-23

104

The Grand Canyon: Its Youngest Rocks  

NSDL National Science Digital Library

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

105

Biological grand universality and its physical challenge  

NASA Astrophysics Data System (ADS)

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?

Azbel?, Mark Ya.

1999-12-01

106

City of Grand Forks GRAND FORKS is situated 75 miles south of the  

E-print Network

. Attractions include the Red River Greenway, the Myra Museum, the North Dakota Museum of Art and the John D. Odegard School of Aerospace Sciences on the University of North Dakota campus. Accommodations Greater Computing Heritage April 20 ­ 21, 2007 Alerus Center Grand Forks, North Dakota Call for Papers Hosted by

Hu, Wen-Chen

107

Neutrino mass and grand unification of flavor  

E-print Network

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

Mohapatra, Rabindra N

2010-01-01

108

Grand Canyon, Lake Powell, and Lake Mead  

NASA Technical Reports Server (NTRS)

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

2002-01-01

109

Elastoplasticidad anisotropa de metales en grandes deformaciones  

NASA Astrophysics Data System (ADS)

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

Caminero Torija, Miguel Angel

110

Calculations of canonical averages from the grand canonical ensemble  

NASA Astrophysics Data System (ADS)

Grand canonical and canonical ensembles become equivalent in the thermodynamic limit, but when the system size is finite the results obtained in the two ensembles deviate from each other. In many important cases, the canonical ensemble provides an appropriate physical description but it is often much easier to perform the calculations in the corresponding grand canonical ensemble. We present a method to compute averages in the canonical ensemble based on calculations of the expectation values in the grand canonical ensemble. The number of particles, which is fixed in the canonical ensemble, is not necessarily the same as the average number of particles in the grand canonical ensemble.

Kosov, D. S.; Gelin, M. F.; Vdovin, A. I.

2008-02-01

111

Lava Flows in the Grand Canyon  

NASA Technical Reports Server (NTRS)

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.

2003-01-01

112

Grand Portage Reservation Environmental Monitoring Program  

USGS Publications Warehouse

There are seven types of aquatic resources on the Grand Portage Reservation. An ecological monitoring program was proposed for these resources. Some of the resources are pristine, while others have been affected by development. Each type of resource has physical (habitat, sediment, and hydrology), chemical, and biological (fish, invertebrates, and algae) characteristics that are monitored in a consistent manner so that change may be detected. Not all aspects of the physical, chemical, and biotic components are monitored at each resource type. Monitoring is focused on those aspects most susceptible to change. Replication and comparison with pristine components are a significant part of the program so that actual change can be determined from natural temporal and spatial variability.

Goldstein, Robert M.

2000-01-01

113

Grand Canyon Monitoring and Research Center  

NSDL National Science Digital Library

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

114

Middle Rio Grande Region Transportation Plan  

E-print Network

of the counties of Dimmit, Edwards, Kinney, La Salle, Maverick, Real, Uvalde, Val Verde, and Zavala. The overall population of the nine (9) counties is 161, 330 in which 71.1% is of Hispanic origin. The Middle Rio Grande Planning region is comprised of 14...,469 Maverick 28.8% 14.7 $23,861 Real 20.6% 4.6 $26,917 Uvalde 23.4% 6.2 $27,617 Val Verde 22.4% 7.3 $30,407 8 Zavala 32.7% 12.0 $18,553 All information taken from the U.S. Census and Texas Workforce Commission 5. Size of the Labor Force and Growth...

Community Council of Southwest Texas, Inc.

2006-12-01

115

Steroids from Dysoxylum grande (Meliaceae) leaves.  

PubMed

Seven new 23-oxo-cholestane derivatives named as grandol A (1), B (2), C (3), D (4), E (5), F (6), and G (7) were isolated from Dysoxylum grande leaves alongside with a new 3,4-secodammar-4(28)-en-3-oic acid derivative (8). The structures of the compounds were elucidated based on the interpretation of spectroscopic data, and their relative configurations were established by NOESY 2D NMR data. All of the isolates were tested for anti-acetylcholinesterase activity using thin layer chromatography (TLC)-bioautography with fast blue B salt. Only grandol A (1) and B (2) showed positive results, with clear discoloration at a concentration of 12.5 ppm. However, the obtained IC(50) values for grandol A and B, when using Ellman's method, were not significant (>200 ?g/ml). PMID:23178158

Wah, Low Kok; Abas, Faridah; Cordell, Geoffrey A; Ito, Hideyuki; Ismail, Intan Safinar

2013-02-01

116

Flavor symmetry, leptogenesis and grand unification theories  

NASA Astrophysics Data System (ADS)

Many neutrino experiments in the last few years have shown concrete evidence for neutrino mass and leptonic mixing; an indication of new physics beyond the standard model. In this thesis, we systematically study the flavor symmetry indicated by the low scale neutrino experiment data with the assumption that the seesaw mechanism is the reason for the light neutrino masses. In the flavor basis, the testable exchange symmetry between muon neutrino and tau neutrino (mu - tau) is introduced to explain the near maximal atmospheric mixing angle and vanishing reactor mixing angle. This symmetry can reduce the seesaw parameters naturally and make it possible to connect the baryon asymmetry of our universe to the low scale neutrino data if leptogenesis causes the baryon asymmetry. We also show this leptonic symmetry can be extended to the quark sector and present a realistic supersymmetry SU(5) grand unification model. Motivated by solar mixing angle sin2thetasolar ? 1/3, we embed the mu - tau symmetry in an S3 permutation symmetry and obtain a so-called tri-bimaximal mixing pattern. We study the stability of the texture under radiative corrections. This S3 model is so constrained that the CP-violating phases of the low scale mixing are those generating the baryon asymmetry within leptongesis. Attempting to unify three families of fermions within the grand unification theories, we treat three families of fermions as the three dimensional irreducible representation of S4 and build a realistic model based on SO(10) gauge group. This model predicts degenerate a right-handed neutrino mass spectrum. In this thesis, we also address the issue of the natural realization of the seesaw mechanism in the supersymmetric minimal SO(10) model. We realize the type II seesaw dominance by invoking a warped extra dimension, while keeping predictivity of the model.

Yu, Haibo

2007-12-01

117

Autonomous Off-Road Driving in the DARPA Grand Challenge  

Microsoft Academic Search

The Golem Group\\/UCLA team was a finalist in the 2005 DARPA Grand Challenge, and traveled 22 miles on race day. The Golem Group was also one of the most successful teams in the 2004 Grand Challenge, traveling 5.2 miles on a shoestring budget. We present the strategies, challenges, outcomes, and lessons learned from two years of autonomous vehicle develop- ment.

Eagle Jones; Brian Fulkerson; Emilio Frazzoli; Deepak Kumar; Robert Walters; Jim Radford; Richard Mason

2008-01-01

118

Autonomous Off-Road Driving in the DARPA Grand Challenge  

Microsoft Academic Search

The Golem Group\\/UCLA team was a finalist in the 2005 DARPA Grand Challenge, and traveled 22 miles on race day. The Golem Group was also one of the most successful teams in the 2004 Grand Challenge, traveling 5.2 miles on a shoestring budget. We present the strategies, challenges, outcomes, and lessons learned from two years of autonomous vehicle develop- ment.

Eagle Jones; Brian Fulkerson; Emilio Frazzoli; D. Kumar; R. Walters; J. Radford; R. Mason

2006-01-01

119

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

120

39 Geographic Information Science: The Grand Challenges MICHAEL F. GOODCHILD  

E-print Network

39 Geographic Information Science: The Grand Challenges MICHAEL F. GOODCHILD Many chapters; and the lack of awareness of such issues as #12;3 Geographic Information Science: The Grand Challenges scale technology; in essence the science behind the systems. Over the past twelve years there have been various

Wright, Dawn Jeannine

121

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

122

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

123

Hardy-Littlewood maximal operator in generalized grand Lebesgue spaces  

NASA Astrophysics Data System (ADS)

We obtain sufficient conditions and necessary conditions for the maximal operator to be bounded in the generalized grand Lebesgue space on an open set ? ? Rn which is not necessarily bounded. The sufficient conditions coincide with necessary conditions for instance in the case where ? is bounded and the standard definition of the grand space is used.

Umarkhadzhiev, Salaudin M.

2014-12-01

124

29. VIEW OF GRAND CANAL, LOOKING WEST TOWARD BROPHY PREP ...  

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

29. VIEW OF GRAND CANAL, LOOKING WEST TOWARD BROPHY PREP AND ST. FRANCIS CHURCH (compare this photograph with AZ-17-15, taken at the same spot in 1937). Photographer: Kevin Kreisel-Coons, May 1990 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

125

23. VIEW OF GRAND CANAL, SHOWING NEW ALIGNMENT CANAL ON ...  

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

23. VIEW OF GRAND CANAL, SHOWING NEW ALIGNMENT CANAL ON RIGHT. THIS PHOTO WAS TAKEN FROM APPROXIMATELY THE SAME SPOT AS THE PREVIOUS PHOTOGRAPH (AZ-17-22). Photographer: Kevin Kreisel-Coons, May 1990 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

126

Space Technology Grand Challenges The Space Technology Grand Challenges are an open call for cutting-edge technological solutions that  

E-print Network

Space Technology Grand Challenges The Space Technology Grand Challenges are an open call for cutting-edge technological solutions that solve important space-related problems, radically improve existing capabilities or deliver new space capabilities altogether. The challenges are centered on three

127

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

E-print Network

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

Exeter, University of

128

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

Federal Register 2010, 2011, 2012, 2013, 2014

...USCG-2010-0470] RIN 1625-AA00 Safety Zone; Grand Marais Splash-In...establishment of a temporary safety zone. An environmental analysis checklist and a categorical exclusion determination are available...Sec. 165.T09-0470 Safety Zone; Grand Marais...

2010-06-16

129

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-05-25

130

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2011-09-15

131

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-04-18

132

Local Grand Unification in the Heterotic Landscape  

E-print Network

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

Jonas Schmidt

2009-06-30

133

Grand unification and intermediate scale supersymmetry  

NASA Astrophysics Data System (ADS)

With minimal field content and for an interesting range of the supersymmetric Higgs mixing parameter, 0.5 ? tan2 ? ? 2, the superpartner mass scale, , is found to be at the intermediate scale, ~ 10101 GeV, near where the Standard Model Higgs quartic coupling passes through zero. For any 4d supersymmetric grand unified symmetry spontaneously broken by a vacuum expectation value , if superpotential interactions for ? are forbidden e.g. by R symmetries, the uneaten color octet, ?8, and weak triplet, ?3, have masses of order m. The combination of superpartner and ?8,3 states leads to successful gauge coupling unification, removing the disastrously high proton decay rate of minimal Standard Model unification. Proton decay could be seen in future experiments if ~ 1011 GeV,but not if it is lower. If there heating temperature after inflation, T R , is less than dark matter may be axions. If T R > , thermal LSP dark matter may lead to the environmental selection of a TeV-scale LSP, either wino or Higgsino, which could comprise all or just one component of dark matter. In the Higgsino case, the dark matter is found to behave inelastically in direct detection experiments, and gauge coupling unification occurs accurately without the need of any threshold corrections.

Hall, Lawrence J.; Nomura, Yasunori

2014-02-01

134

Analytic solution for grand confluent hypergeometric function  

E-print Network

In previous paper I construct an approximative solution of the power series expansion in closed forms of Grand Confluent Hypergeometric (GCH) function only up to one term of A_n's [4]. And I obtain normalized constant and orthogonal relation of GCH function. In this paper I will apply three term recurrence formula [3] to the power series expansion in closed forms of GCH function (infinite series and polynomial) including all higher terms of A_n's. In general most of well-known special function with two recursive coefficients only has one eigenvalue for the polynomial case. However this new function with three recursive coefficients has infinite eigenvalues that make B_n's term terminated at specific value of index n because of three term recurrence formula [3]. This paper is 9th out of 10 in series "Special functions and three term recurrence formula (3TRF)". See section 6 for all the papers in the series. Previous paper in series deals with generating functions of Lame polynomial in the Weierstrass's form [28]. The next paper in the series describes the integral formalism and the generating function of GCH function [30].

Yoon Seok Choun

2014-11-05

135

Grand challenge scientific questions in coupled modeling  

NASA Technical Reports Server (NTRS)

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.

Koch, Steven

1993-01-01

136

A liner timeline at Grand Central Sanitation  

SciTech Connect

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.

Woods, R.

1994-08-01

137

Coordinating the Atlantis Grand Opening Event  

NASA Technical Reports Server (NTRS)

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.

Smith, Abigail Allaine

2013-01-01

138

Unmanned Vehicles Come of Age: The DARPA Grand Challenge  

Microsoft Academic Search

While the DARPA Grand Challenge has revitalized interest in intelligent highway systems, autonomous vehicles, and sensing technology, a host of other novel issues afford interesting design and computer-engineering challenges for the future.

Guna Seetharaman; Arun Lakhotia; Erik Philip Blasch

2006-01-01

139

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

NASA Video Gallery

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

140

The DARPA grand challenge - development of an autonomous vehicle  

Microsoft Academic Search

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

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

2004-01-01

141

Habitat Appraisal Guide for Rio Grande Wild Turkey  

E-print Network

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

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

2007-09-04

142

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

E-print Network

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

Iglesias Cuervo, Jesus

2012-01-01

143

Stanley: The Robot That Won the DARPA Grand Challenge  

Microsoft Academic Search

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

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

144

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

145

Old Fire/Grand Prix Fire, California  

NASA Technical Reports Server (NTRS)

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

2003-01-01

146

3D View of Grand Canyon, Arizona  

NASA Technical Reports Server (NTRS)

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.

2000-01-01

147

77 FR 22569 - Interconnection of the Grande Prairie Wind Farm, Holt County, NE  

Federal Register 2010, 2011, 2012, 2013, 2014

...Administration Interconnection of the Grande Prairie Wind Farm, Holt County, NE AGENCY: Western...proposed interconnection of the Grande Prairie Wind Farm (Project) in Holt County, near...of O'Neill, Nebraska. Grande Prairie Wind, LLC (Grande Prairie Wind), a...

2012-04-16

148

Coral associations of the Pleistocene Ironshore Formation, Grand Cayman  

NASA Astrophysics Data System (ADS)

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

Hunter, I. G.; Jones, B.

1996-11-01

149

The grand multipara--maternal and neonatal complications.  

PubMed

During the period of 1974-83 the records of all grand multiparous women were analysed and compared with an equally large control group consisting of second and third parae. Antenatal complications, the management of and complications in labor, complications in the puerperium, perinatal mortality and neonatal morbidity were recorded and compared with the control group. Although there was no statistically significant difference in the frequency of abruptio placentae and placenta praevia in the groups, the increased tendency in the grand multipara group resulted in a high frequency of induced preterm delivery. There was also an increased occurrence of abnormal presentations and positions. The perinatal mortality was high, 23.5% compared with none in the control group. Furthermore there was an increased incidence of neonatal morbidity. One mother in the grand multipara group died from dissecting aortic aneurysm during the puerperium. PMID:3604593

Tanbo, T G; Bungum, L

1987-01-01

150

History and environmental setting of the Grand Calumet River  

USGS Publications Warehouse

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.

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

2002-01-01

151

Mutagenic potential of sediments from the Grand Calumet River  

SciTech Connect

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.

Maccubbin, A.E.; Ersing, N. (Roswell Park Cancer Inst., Buffalo, NY (United States))

1991-08-01

152

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

153

Dawn Grand Raw (edr) Vesta Counts V1.0  

NASA Astrophysics Data System (ADS)

The GRaND EDR are a time-ordered collection of gamma ray and neutron counting data and histograms acquired by GRaND during all phases of the Dawn mission. The dataset includes state-of-health data, such as temperature and voltage readings, needed for the analysis of the counting data. The EDR is an intermediate data product derived from the raw data records using reversible operations. All higher order data products are derived from the EDR. An automated pipeline is used to process the EDR from the raw data records.

Prettyman, T. H.

2014-06-01

154

Cosmology for grand unified theories with radiatively induced symmetry breaking  

Microsoft Academic Search

The treatment of first-order phase transitions for standard grand unified theories is shown to break down for models with radiatively induced spontaneous symmetry breaking. It is argued that proper analysis of these transitions which would take place in the early history of the universe can lead to an explanation of the cosmological homogeneity, flatness, and monopole puzzles.

Andreas Albrecht; P. J. Steinhardt

1982-01-01

155

Microbial contamination and chemical toxicity of the Rio Grande  

Microsoft Academic Search

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

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

2004-01-01

156

Solving Computational Grand Challenges Using a Network of Heterogeneous Supercomputers  

Microsoft Academic Search

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

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

1991-01-01

157

Grand Strand Geology and its impact on Beach Nourishment  

NSDL National Science Digital Library

Brief analysis of the geologic setting of the Grand Strand (Myrtle Beach, South Carolina, and vicinity) coast and the limited occurrence of sand suitable for beach re-nourishment. Students use a USGS Fact Sheet to examine the beach, near offshore, and edge of Coastal Plain geology.

Farley, Martin

158

Basement extension and salt mobility, southern Grand Banks, Newfoundland  

SciTech Connect

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.

Balkwill, H.R.; Legall, F.

1986-05-01

159

Accelerating scientific discovery by formulating grand scientific challenges  

NASA Astrophysics Data System (ADS)

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.

Helbing, D.

2012-11-01

160

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...

161

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

ERIC Educational Resources Information Center

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

Tessmer, Al; Trzeciak, Mark

2010-01-01

162

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

163

33 CFR 117.478 - Lower Grand River.  

Code of Federal Regulations, 2014 CFR

...Louisiana 117.478 Lower Grand River. (a) The draw of the LA 75 bridge, mile 38.4 (Alternate Route) at Bayou Sorrel, shall open on signal; except that from about August 15 to about June 5 (the school year), the draw need not be...

2014-07-01

164

33 CFR 117.478 - Lower Grand River.  

Code of Federal Regulations, 2012 CFR

...Louisiana 117.478 Lower Grand River. (a) The draw of the LA 75 bridge, mile 38.4 (Alternate Route) at Bayou Sorrel, shall open on signal; except that from about August 15 to about June 5 (the school year), the draw need not be...

2012-07-01

165

MIGRATION OF THE WILLOW THE MIDDLE RIO FLYCATCHER GRANDE ALONG  

Microsoft Academic Search

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

WANG YONG; DEBORAH M. FINCH

166

WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS  

E-print Network

The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called colonias...

Garcia, Bianca 1989-

2011-05-06

167

WATER COMMODIFICATION IN THE LOWER RIO GRANDE VALLEY, TEXAS  

E-print Network

The lower Rio Grande Valley of Texas is one of the poorest regions with the largest population lacking suitable water supply in the entire United States. The region is characterized by low-income, rural and peri-urban communities called ?colonias...

Hernandez, Manuel

2011-05-06

168

33 CFR 117.478 - Lower Grand River.  

Code of Federal Regulations, 2013 CFR

...Louisiana 117.478 Lower Grand River. (a) The draw of the LA 75 bridge, mile 38.4 (Alternate Route) at Bayou Sorrel, shall open on signal; except that from about August 15 to about June 5 (the school year), the draw need not be...

2013-07-01

169

33 CFR 117.478 - Lower Grand River.  

Code of Federal Regulations, 2011 CFR

...Louisiana 117.478 Lower Grand River. (a) The draw of the LA 75 bridge, mile 38.4 (Alternate Route) at Bayou Sorrel, shall open on signal; except that from about August 15 to about June 5 (the school year), the draw need not be...

2011-07-01

170

SEDIMENT FLUX THROUGH THE RIO GRANDE RIVER: A MONSOONAL EFFECT  

E-print Network

SEDIMENT FLUX THROUGH THE RIO GRANDE RIVER: A MONSOONAL EFFECT Troy C.Hiatt A thesis submitted monsoonal effects using relationships between sediment flux, river discharge, and precipitation. Heavy water University August 2010 Copyright © 2010 Troy C. Hiatt All Rights Reserved #12;ABSTRACT Sediment Flux through

Seamons, Kent E.

171

Male Rio Grande Turkey Survival and Movements in the  

Microsoft Academic Search

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

Texas Panhandle

172

The Grand Canyon: The Top Two Rock Layers  

NSDL National Science Digital Library

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

2006-01-01

173

Structures of Urban Poverty in Greg Sarris's "Grand Avenue"  

ERIC Educational Resources Information Center

Greg Sarris's 1994 "Grand Avenue" offers tough urban stories about a long-fought, still-continuing struggle for survival and self-determination. Sarris's stories present the day-to-day lives of a contemporary, fictional Pomo community living in a multiracial neighborhood not far from their traditional homeland. The stories depict poverty, high

Dyck, Reginald

2010-01-01

174

Hydrologic Variability in Rio Grande Riparian Ecosystems, New Mexico, USA  

Microsoft Academic Search

Water consumption by invasive vegetation and restoration of native riparian ecosystems are receiving considerable attention along the Rio Grande corridor in central New Mexico, USA. Since 2000, we have measured evapotranspiration (ET) to estimate water use at several sites composed of native and exotic vegetation. We have also monitored water table (WT) depths and flood events to help determine restoration

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

2005-01-01

175

Grand Canyon Trekkers: School-Based Lunchtime Walking Program  

ERIC Educational Resources Information Center

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

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

2011-01-01

176

Renovation of the supervisory system in Salto Grande  

Microsoft Academic Search

In this paper the basic geographical distribution and topology of the Salto Grande Hydro-Electrical System are explained. Important aspects of the bid process for the acquisition of the new SCADA\\/EMS System are described, commenting on their impact on the selection of the contractor. An extensive training program was a fundamental part of the project and is fully described. As part

Juan Carlos Miguez; Ines Artucio; Gustavo Araujo; Mercedes Marchese

2008-01-01

177

Winning the DARPA Grand Challenge with an AI Robot  

Microsoft Academic Search

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

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

2006-01-01

178

Kristina Sorensen Acoustics of a Rotating Grand Piano & the Flute  

E-print Network

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

Hart, Gus

179

Rio Grande Wild Turkey in Texas: Biology and Management  

E-print Network

Over-hunting greatly reduced populations of the Rio Grande Wild Turkey in Texas. Now, however, restoration efforts and harvest limits are helping the birds make a come-back, and many landowners want to know how to manage their land to encourage them...

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

2007-09-11

180

The Stephen and Nancy GrandThe Stephen and Nancy GrandThe Stephen and Nancy GrandThe Stephen and Nancy Grand Water ResearchWater ResearchWater ResearchWater Research  

E-print Network

for Reducing Water Pollution and Hypoxia in Large Water Bodies in the World 15:55-16:20 Luc Maene and Nancy Grand Water ResearchWater ResearchWater ResearchWater Research Institute: Global Climate Change, Environmental Risks and Water Scarcity #12;2 Monday, March 2Monday, March 2Monday

181

The Grand Canyon of the Yellowstone Online Tour  

NSDL National Science Digital Library

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

Park, Yellowstone N.

182

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 station13011000, Snake River near Moran, WY, Grand Teton National Park. &nb...

183

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...

184

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...

185

LESSONS FROM GRAND FORKS :P LANNING NONSTRUCTURAL FLOOD CONTROL MEASURES  

Microsoft Academic Search

Even though the flood of 1997 at Grand Forks, North Dakota, did not take a single life, the people suffered enormous economic damage and such large intangible losses that the city considered itself damaged to the ''core.'' Losses were exacerbated by five surprises. People working to protect themselves as flood stages rose and then to salvage their possessions as waters

L. Douglas James; Scott F. Korom

186

EXPLORING SOLAR GRAND MINIMA THROUGH A TIME DELAY DYNAMO MODEL  

NASA Astrophysics Data System (ADS)

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.

Hazra, Soumitra; Nandy, D.

2013-07-01

187

Collaborative Care for Children: A Grand Rounds Presentation  

ERIC Educational Resources Information Center

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

Foley, Michele; Dunbar, Nancy; Clancy, Jeanne

2014-01-01

188

Autonomous Off-Road Driving in the DARPA Grand Challenge  

E-print Network

learned from two years of autonomous vehicle develop- ment. Autonomous navigation in the off road that there is an unusually large divide between theory and practice in off-road autonomous vehicle navigation. PriorAutonomous Off-Road Driving in the DARPA Grand Challenge Eagle Jones, Brian Fulkerson, and Emilio

Soatto, Stefano

189

Workshop and conference on Grand Challenges applications and software technology  

SciTech Connect

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.

Not Available

1993-12-31

190

Data Mining: Data Analysis on a Grand Scale? Padhraic Smyth  

E-print Network

Data Mining: Data Analysis on a Grand Scale? Padhraic Smyth Information and Computer Science for Statistical Methods in Medical Research, September 2000 1 #12;Abstract Modern data mininghas evolvedlargelyas aresult ofe orts bycomputer scientists to address the needs of data owners" in extracting useful

Smyth, Padhraic

191

'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, ...

192

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...

193

Climate Change: A Grand Software Challenge Steve Easterbrook  

E-print Network

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

Easterbrook, Steve

194

The Grand Canyon of the Yellowstone by Lucien Powell  

USGS Multimedia Gallery

This large (74" X 114.5") oil painting was done by Lucien W. Powell and is on loan to the Geological Survey from the Smithsonian National Museum of American Art. The title of the painting is The Grand Canyon of the Yellowstone. Object ID: USGS-575066...

2009-07-22

195

The Stephen and NancyGrand Water Research  

E-print Network

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

196

MATERIAUX COMPOSITES SOUMIS A DE GRANDES VITESSES DE SOLLICITATION  

E-print Network

, viscoélasticité, viscoplasticité, endommagement, modélisation. KEYWORDS : high strain rate, polypropylene, glassMATERIAUX COMPOSITES SOUMIS A DE GRANDES VITESSES DE SOLLICITATION B. Bonnet*, A. Thionnet*,**, J réponse à des sollicitations quasi-statiques et dynamiques de deux matériaux composites utilisés dans l

Boyer, Edmond

197

The Deaf of Grand Cayman, British West Indies.  

ERIC Educational Resources Information Center

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

Washabaugh, William

1981-01-01

198

Grand Canyon Glass Skywalk creates excitement and controversy  

NSDL National Science Digital Library

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

Grinnell, Max

199

Water isotopologues as a quantitative paleosalinity proxy Allegra N. LeGrande1  

E-print Network

Water isotopologues as a quantitative paleosalinity proxy Allegra N. LeGrande1 and Gavin A. Schmidt for providing better quantitative estimates of salinity variability. Citation: LeGrande, A. N., and G. A

200

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2013-05-17

201

76 FR 23623 - Backcountry Management Plan, Environmental Impact Statement, Grand Canyon National Park, Arizona  

Federal Register 2010, 2011, 2012, 2013, 2014

...for the Backcountry Management Plan, Grand Canyon...for the Backcountry Management Plan for Grand Canyon...protecting natural and cultural resources while providing...research activities, management of natural and cultural resources, and...

2011-04-27

202

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2010-03-05

203

78 FR 32441 - Grand Ditch Breach Restoration, Final Environmental Impact Statement, Rocky Mountain National...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Environmental Impact Statement, Rocky Mountain National Park, Colorado AGENCY: National...Grand Ditch Breach Restoration, Rocky Mountain National Park...Grand Ditch Breach Restoration, Rocky Mountain National Park, Colorado. DATES:...

2013-05-30

204

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

E-print Network

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

Bockelie, Adam

2012-01-01

205

BOTANICAL SURVEY OF WINTER PARK RESORT, ARAPAHO NATIONAL FOREST, GRAND COUNTY, COLORADO  

E-print Network

BOTANICAL SURVEY OF WINTER PARK RESORT, ARAPAHO NATIONAL FOREST, GRAND COUNTY, COLORADO Colorado Collins, Colorado 80523-8002 #12;BOTANICAL SURVEY OF WINTER PARK RESORT, ARAPAHO NATIONAL FOREST, GRAND......................................................................................................................... 1 BOTANICAL SURVEY OF PARSENN PEAK

206

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2011-07-08

207

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

USGS Publications Warehouse

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.

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

208

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2011-11-29

209

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-02-14

210

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2013-11-18

211

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2013-04-29

212

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2011-09-07

213

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-04-10

214

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-07-16

215

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2011-07-05

216

Grand Challenges and Opportunities Supply Chain Networks: From Analysis to Design  

E-print Network

Grand Challenges in Supply Chain Networks #12;Examples of Supply Chains food and food products high tech supply chains supply chains in nature. Anna Nagurney Grand Challenges in Supply Chain Networks #12;FoodGrand Challenges and Opportunities in Supply Chain Networks: From Analysis to Design Anna Nagurney

Nagurney, Anna

217

A Multithreaded Java Grande Benchmark Suite L. A. Smith and J. M. Bull  

E-print Network

parallel benchmarks has been developed from the serial Java Grande benchmark suite, using Java nativeA Multithreaded Java Grande Benchmark Suite L. A. Smith and J. M. Bull EPCC, The King's Buildings execution environments that can be tested using the Java Grande benchmark suite [5], [6], [7]. The large

Bull, Mark

218

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

Federal Register 2010, 2011, 2012, 2013, 2014

...USCG-2012-0533] RIN 1625-AA00 Safety Zone; Grand Hotel 125th Anniversary Fireworks Celebration...on Lake Huron to commemorate the Grand Hotel's 125th anniversary. The Captain of...Sainte Marie, has determined that the Grand Hotel Celebration Fireworks Display will...

2012-06-21

219

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

E-print Network

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

220

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

Federal Register 2010, 2011, 2012, 2013, 2014

...NRC-2013-0003; Docket Nos. 52-009; Permit No. ESP-002] System Energy Resources, Inc.; Grand Gulf Nuclear...is the permit holder of Grand Gulf Early Site Permit (ESP) No. ESP-002. The ESP-002 is for a site adjacent to Grand...

2013-05-13

221

US DOE Grand Challenge in Computational Accelerator Physics  

SciTech Connect

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.

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

222

Late archaic settlement systems in the northern Rio Grande  

SciTech Connect

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.

Vierra, Bradley J.

2003-01-01

223

Volume terms for charged colloids: a grand-canonical treatment  

E-print Network

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

Bas Zoetekouw; Rene van Roij

2006-02-28

224

Neutrino masses, grand unification, and baryon number violation  

NASA Astrophysics Data System (ADS)

If grand unification is real, searches for baryon-number violation should be included on the list of observables that may reveal information regarding the origin of neutrino masses. Making use of an effective-operator approach and assuming that nature is SU(5) invariant at very short distances, we estimate the consequences of different scenarios that lead to light Majorana neutrinos for low-energy phenomena that violate baryon number minus lepton number (B -L) by two (or more) units, including neutron-antineutron oscillations and B -L violating nucleon decays. We find that, among all possible effective theories of lepton-number violation that lead to nonzero neutrino masses, only a subset is, broadly speaking, consistent with grand unification.

de Gouva, Andr; Herrero-Garca, Juan; Kobach, Andrew

2014-07-01

225

Neutrino Masses, Grand Unification, and Baryon Number Violation  

E-print Network

If grand unification is real, searches for baryon-number violation should be included on the list of observables that may reveal information regarding the origin of neutrino masses. Making use of an effective-operator approach and assuming that nature is SU(5) invariant at very short distances, we estimate the consequences of different scenarios that lead to light Majorana neutrinos for low-energy phenomena that violate baryon number minus lepton number (B-L) by two (or more) units, including neutron-antineutron oscillations and B-L violating nucleon decays. We find that, among all possible effective theories of lepton-number violation that lead to nonzero neutrino masses, only a subset is, broadly speaking, consistent with grand unification.

Andre de Gouvea; Juan Herrero-Garcia; Andrew Kobach

2014-04-15

226

Constraining grand unification using first and second generation sfermions  

NASA Astrophysics Data System (ADS)

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

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

2013-01-01

227

Grand Canyon, Arizona as seen from STS-66  

NASA Technical Reports Server (NTRS)

Snow covers the Kaibab Plateau on the northern side of the Colorado River in this November, 1994 view of the Grand Canyon. North is to the bottom of this view. The Colorado River has created a canyon which cuts through billions of years of geologic time. The Grand Canyon is 446 kilometers (277 miles) long, averages 16 kilometers (10 miles) wide, and is approximately 1.6 kilometers (1 mile) deep. The Coconino Plateau is located on the upper left side of the view, or to the south of the Colorado River. The direction of the flow of the Colorado River is from the east to the west. Eventually the river turns south and empties into the Gulf of California. The southern portion of Lake Powell in Utah can be seen at the bottom center of the view.

1994-01-01

228

Pyrethroid Resistance in Aedes aegypti from Grand Cayman  

PubMed Central

The Grand Cayman population of Aedes aegypti is highly resistant to DDT and pyrethroid insecticides. Glutathione transferase, cytochrome P450, and esterase levels were increased in the Grand Cayman population relative to a susceptible laboratory strain, but synergist studies did not implicate elevated insecticide detoxification as a major cause of resistance. The role of target site resistance was therefore investigated. Two substitutions in the voltage-gated sodium channel were identified, V1016I in domain II, segment 6 (IIS6) (allele frequency = 0.79) and F1534C in IIIS6 (allele frequency = 0.68). The role of the F1534C mutation in conferring resistance to insecticides has not been previously established and so a tetraplex polymerase chain reaction assay was designed and used to genotype mosquitoes that had been exposed to insecticides. The F1534C mutation was strongly correlated with resistance to DDT and permethrin. PMID:20682868

Harris, Angela F.; Rajatileka, Shavanthi; Ranson, Hilary

2010-01-01

229

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

USGS Publications Warehouse

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

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

1982-01-01

230

Cotton Irrigation in the Lower Rio Grande Valley.  

E-print Network

Cotton Irrigation' In the Lower Rio Grande Valley TEXAS A&M UNIVERSITY ^ Texas Agricultural Experiment Station R. E. Patterson, Director, College Station, Texas I cooperation with the U. 5. Department of Agriculture ' Summary Irrigation... spacing experiments for cotton indicate that the water requirement of cotton is dependent upon the soil type which determines the rooting characteristic of the cotton plant. Moisture use on the Harlingen clay was re- I stricted mainly to the surface 2...

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

1964-01-01

231

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

NSDL National Science Digital Library

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

Dexter Perkins

1998-01-01

232

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

SciTech Connect

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.

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

2003-03-01

233

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

SciTech Connect

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.

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

2003-03-01

234

Biology of the Rio Grande border region : a bibliography  

USGS Publications Warehouse

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.

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

1997-01-01

235

Grand Canonical Molecular Dynamic Simulations For Polar Systems  

Microsoft Academic Search

The purely molecular dynamical formulation of grand canonical ensemble of Pettitt and co-workers was extended to implement the Nos-Hoover thermostat and introduce multiple fractional particles. The algorithm was applied to simulation of ?VT ensembles of TIP4P water and methanol molecules at 298K. The procedure reproduced the experimental density of water for input chemical potential of ?24.0kJ\\/mol, as well that of

Tatyana Kuznetsova; Bjrn Kvamme

2005-01-01

236

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

PubMed

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

Moore, J P

2001-12-01

237

UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL INSTITUTO DE INFORMTICA  

E-print Network

. Jean-Christophe Buisson Directeur de Thèse (INPT) Toulouse, Juin 2010. tel-00620755,version1-8Sep2011'Universidade Federal do Rio Grande do Sul (Brésil), 2010. Directeurs de thèse: Luís Otávio ALVARES et Jean Automatique. 4. Agents Autonomes. 5. Induction de Concepts. 6. Développement Cognitif Artificiel. 7. Piaget. 8

Paris-Sud XI, Université de

238

Backcountry water quality in Grand Teton National Park  

USGS Publications Warehouse

Over the past several decades, visitor use of the backcountry areas of Grand Teton National Park (Wyoming) has dramatically increased. The water quality of clear, sparkling mountain streams and lakes is being impacted by concentrated recreational use where, because of the potential for future wilderness designation, no restroom facilities are available. Park officials are concerned about the impacts that these activities have on water quality, and that the consumption of untreated water from these areas may pose a hazard to human health.

Tippets, N.; O'Ney, S.; Farag, A.M.

2001-01-01

239

Outer planets grand tours: Planetary radio astronomy team report  

NASA Technical Reports Server (NTRS)

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.

Warwick, J. W.

1972-01-01

240

Cenozoic Landscape Evolution of the Grand Canyon Region, Arizona  

E-print Network

CHAPTER 1: Quantifying the Evolution of Grand Canyon Topography with Thermochronology and Numerical Modeling Chapter Summary 1 1. Introduction 2 2. Background and Approach 4 2.1 Geologic Setting... 4 2.2 End Member Erosion Models 6 2.3 Approach and Methodology 7 2.3.1 Isotherm Deflection 7 2.3.2 Numerical Modeling 8 2.3.3 Apatite (U-Th)/He Thermochronology 9 3. Synthetic Canyon...

Lee, John

2008-02-26

241

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

USGS Publications Warehouse

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.

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

2006-01-01

242

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

PubMed

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

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

2006-01-01

243

Grand Canyon, Colorado as seen from STS-62  

NASA Technical Reports Server (NTRS)

In this view, the Colorado River can be seen flowing southwest from top left to bottom center-right. The dark wider sections of the river are the water surface of Lake Powell (center, and top left), 110 miles long in a straight line. Grand Canyon National Monument lies lower right, centered on the Grand Canyon of the Colorado River, a 10 mile-wide gash carved more than 5,000 feet deep by the Colorado. The Canyon has cut into the Kaibab Plateau, an uplifted area visible here as a forested area with snow on the highest northern parts. The surrounding parts of the Colorado Plateau are sparsely occupied by brush vegetation and appear yellow-brown. The dark area top right is the wooded country of Black Mesa in Navajoland, divided from Lake Powell by the San Juan River. Four Corners is just outside the pictures (top) where the states of Arizona, Utah, Colorado and New Mexico meet. The Henry Mountains appear top left. Apart from Grand Canyon National Monument, several other famous national mo

1994-01-01

244

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

E-print Network

.caymanbiodiversity.com I Sandy Beach Sandy Beach Mosaic Cobble Cobble Mosaic #12;Mangrove - Grand CaymanMangrove - Grand.caymanbiodiversity.com I Protected Areas Seasonally Flooded Mangrove Shrubland / Woodland Seasonally Flooded Mangrove Forest / Woodland Tidally Flooded Mangrove Shrubland / Woodland Tidally Flooded Mangrove Forest

Exeter, University of

245

7056 Federal Register / Vol. 79, No. 25 / Thursday, February 6, 2014 / Rules and Regulations geographic coordinates of the Grand  

E-print Network

Grand Forks, ND [Corrected] Grand Forks International Airport, ND On page 74006, column 1, line 29 geographic coordinates of the Grand Forks International Airport ILS Localizer, and removes NOTAM information Class D and Class E airspace in the Grand Forks, ND area. DATES: Effective Date: 0901 UTC, February 6

246

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

NASA Astrophysics Data System (ADS)

We propose that grand minima in solar activity are caused by simultaneous fluctuations in the meridional circulation and the BabcockLeighton 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 BabcockLeighton mechanism can be operative during grand minima when there are no sunspots. We show that an ?-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 ?-effect is suitably fine-tuned.

Karak, Bidya Binay; Choudhuri, Arnab Rai

2013-11-01

247

Fostering Scientific Literacy: Establishing Social Relevance via the Grand Challenges  

NASA Astrophysics Data System (ADS)

Numerous studies and polls suggest the general publics 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.

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

2010-12-01

248

Aerosol and Transport Climatology at the Grand Canyon  

NASA Astrophysics Data System (ADS)

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

Vasconcelos, Luis Alfredo De Paula

1995-01-01

249

Higgs inflation in minimal supersymmetric SU(5) grand unified theory  

NASA Astrophysics Data System (ADS)

The standard model Higgs boson with large nonminimal coupling to the gravitational curvature can drive cosmological inflation. We study this type of inflationary scenario in the context of supersymmetric grand unification and point out that it is naturally implemented in the minimal supersymmetric SU(5) model, and hence virtually in any GUT models. It is shown that with an appropriate Khler potential the inflaton trajectory settles down to the standard model vacuum at the end of the slow roll. The predicted cosmological parameters are also consistent with the 7-year WMAP data.

Arai, Masato; Kawai, Shinsuke; Okada, Nobuchika

2011-12-01

250

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

NASA Astrophysics Data System (ADS)

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.

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

2014-12-01

251

Cosmological consequences of grand unified theories on density fluctuations  

NASA Astrophysics Data System (ADS)

Recent investigations into the cosmological consequences of grand unified theories (GUTs) of elementary particles have shown that the observed matter-antimatter asymmetry of the Universe can be explained without recourse to the hypothesis of specific initial conditions. It is shown here that the origin of inhomogeneities in the matter distribution, which are thought to be responsible for the later formation of galaxies, cannot be explained by a simple addition of density fluctuations to the standard model. The appearance of these fluctuations, after the epoch when baryon number is fixed, is almost purely adiabatic, any departure from adiabaticity falling off in inverse proportion to the mass of the perturbation.

Lindley, D.

1981-05-01

252

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

NSDL National Science Digital Library

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

2005-11-03

253

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

NSDL National Science Digital Library

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

254

Schweickart and guest at ASVC prior to grand opening  

NASA Technical Reports Server (NTRS)

Apollo 9 Lunar Module Pilot Russell L. Schweikart poses in front of an Apollo Command and Service Module in the 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. Several Apollo 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 components, multimedia presentations and a simulated Apollo/Saturn V liftoff. The facility will be a part of the KSC bus tour that embarks from the KSC Visitor Center.

1997-01-01

255

Ordering Geologic Events and Interpreting Geologic History: The Grand Canyon  

NSDL National Science Digital Library

This activity is designed to help students recognize the connections among things like rock identification and map reading with the "story" that these things can tell us in terms of geologic history. Students have already learned about using observation to identify rocks and the principles of interpreting geologic cross-sections. The activity gives students practice in rock ID, topo map reading, geologic map reading and the aspects of geologic time. Students work with rock samples and a geologic map of the Grand Canyon to interpret a history for the area.

Jennifer Wenner

256

Grand challenges in bioengineered nanorobotics for cancer therapy.  

PubMed

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

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

2013-03-01

257

Early Agriculture in the Eastern Grand Canyon of Arizona, USA  

USGS Publications Warehouse

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.

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

2000-01-01

258

Les grandes tapes de la vie de Georges Cuvier  

E-print Network

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

259

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

SciTech Connect

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.

Patterson, Scott

2009-04-10

260

SO(10) grand unified theories with dynamical Yukawa couplings  

NASA Astrophysics Data System (ADS)

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 systemwhich 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.

Aulakh, Charanjit S.; Khosa, Charanjit K.

2014-08-01

261

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

NASA Technical Reports Server (NTRS)

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.

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

1972-01-01

262

BotEC: The Grand Canyon's Rate of Erosion  

NSDL National Science Digital Library

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

Kresan, Peter

263

Measurements of velocity and discharge, Grand Canyon, Arizona, May 1994  

USGS Publications Warehouse

The U.S. Geological Survey (USGS) evaluated the feasibility of utilizing an acoustic Doppler current profiler (ADCP) to collect velocity and discharge data in the Colorado River in Grand Canyon, Arizona, in May 1994. An ADCP is an instrument that can be used to measure water velocity and discharge from a moving boat. Measurements of velocity and discharge were made with an ADCP at 54 cross sections along the Colorado River between the Little Colorado River and Diamond Creek. Concurrent measurements of discharge with an ADCP and a Price-AA current meter were made at three U.S. Geological Survey streamflow-gaging stations: Colorado River above the Little Colorado River near Desert View, Colorado River near Grand Canyon, and Colorado River above Diamond Creek near Peach Springs. Discharges measured with an ADCP were within 3 percent of the rated discharge at each streamflow-gaging station. Discharges measured with the ADCP were within 4 percent of discharges measured with a Price-AA meter, except at the Colorado River above Diamond Creek. Vertical velocity profiles were measured with the ADCP from a stationary position at four cross sections along the Colorado River. Graphs of selected vertical velocity profiles collected in a cross section near National Canyon show considerable temporal variation among profile.

Oberg, Kevin A.; Fisk, Gregory G.

1995-01-01

264

Predictive Temperature Equations for Three Sites at the Grand Canyon  

NASA Astrophysics Data System (ADS)

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.

McLaughlin, Katrina Marie Neitzel

265

Geomorphology of plutonium in the Northern Rio Grande  

SciTech Connect

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.

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

1993-03-01

266

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

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.

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

1998-01-01

267

Bringing Seismology's Grand Challenges to the Undergraduate Classroom  

NASA Astrophysics Data System (ADS)

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.

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

2011-12-01

268

Grand Forks - East Grand Forks Urban Water Resources Study. Energy conservation and recreation appendix, public involvement appendix. Final report  

SciTech Connect

The goal of the Corps of Engineers Urban Study Program is to provide planning assistance to local interests in a variety of water resource areas. The St. Paul District conducted the Grand Forks-East Grand Forks (GF/EGF) Urban Water Resources Study which was a cooperative effort among local, state and federal agencies. Primary attention was given to flood control, water supply and wastewater management; supporting investigations addressed recreation and energy conservation. The recreation investigation consists of the leisure time analysis conducted in stage 2 of the urban study by the Heritage Conservation and Recreation Service, Department of the Interior. The leisure time analysis compared the study area's recreational needs to the available and planned facilities and identified unsatisfied needs. The thermography investigation was conducted in spring 1978 in response to the public's growing awareness of energy conservation and the Corps' desire to make the public aware of the urban study in a meaningful, useful fashion. The investigation consisted of aerial infrared photography, public displays of photographs, and distribution of information on energy saving practices. This investigation was a one-time effort with no plans for follow-up.

Not Available

1981-07-01

269

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

NASA Astrophysics Data System (ADS)

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

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

2013-12-01

270

Discrimination of supersymmetric grand unified models in gaugino mediation  

SciTech Connect

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.

Okada, Nobuchika [Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487 (United States); Hieu Minh Tran [Hanoi University of Science and Technology, 1 Dai Co Viet Road, Hanoi (Viet Nam); Hanoi University of Science - VNU, 334 Nguyen Trai Road, Hanoi (Viet Nam)

2011-03-01

271

A groundwater convection model for Rio Grande rift geothermal resources  

NASA Technical Reports Server (NTRS)

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.

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

1981-01-01

272

Controlled Flooding of the Colorado River in the Grand Canyon  

NSDL National Science Digital Library

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

1997-01-01

273

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

SciTech Connect

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.

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

2009-07-01

274

Fluctuations in the alpha-effect and grand solar minima  

NASA Astrophysics Data System (ADS)

The parameters of a special type of ?-effect known in dynamo theory as the Babcock-Leighton mechanism are estimated using the data of sunspot catalogs. The estimates support the presence of the Babcock-Leighton ?-effect on the Sun. Fluctuations of the ?-effect are also estimated. The fluctuation amplitude appreciably exceeds themean value, and the characteristic time for the fluctuations is comparable to the period of the solar rotation. Fluctuations with the parameters found are included in a numericalmodel for the solar dynamo. Computations show irregular changes in the amplitudes of the magnetic cycles on time scales of centuries and millennia. The calculated statistical characteristics of the grand solar minima and maxima agree with the data on solar activity over the Holocene.

Olemskoy, S. V.; Choudhuri, A. R.; Kitchatinov, L. L.

2013-06-01

275

Magnetotelluric pilot study in the Rio Grande Rift, southwest USA  

NASA Astrophysics Data System (ADS)

A magnetotelluric (MT) pilot study consisting of approximately 25 stations distributed in and around the Rio Grande Rift of the southwest United States was carried out in the summer of 2012. Both broadband (100 Hz to 1000 s) and long-period (up to 10 000 s) MT data were collected across two profiles that run perpendicular to the rift axis near Denver, Colorado and Taos, New Mexico, respectively. Time-domain EM data was also collected at each site to account for galvanic distortion in the near-surface. The tectonic forces and rheologic properties behind the initiation and propagation of the rift are poorly understood. Surface mapping of volcanism, normal faulting and sedimentary basins reveals a narrow band of crustal deformation confined to a region in close proximity to the rift axis while geophysical results suggest that deformation is distributed across a much broader and deeper region of the lithosphere. In particular, seismic tomography shows low seismic wave speeds into the lower crust and upper mantle. The magnetotelluric technique is a well-proven passive electromagnetic method that allows for the detection of apparent resistivity at a wide range of depth scales. Complimenting the seismic results with MT data will provide important new information on the geologic and geophysical properties that control the rifting process in this low-strain rate environment. Properties to which the MT method is particular sensitive include temperature, fluid content, and mineral alteration. Preliminary results from this most recent survey are encouraging, showing good data quality up to 10 000 s. In an important precursor to full 2D modeling, the magnetotelluric phase tensor has been used to assess the dimensionality of the electrical resistivity structure at depth. This pilot study provides proof of concept for a much larger magnetotelluric experiment planned to take place in the Rio Grande Rift in 2013.

Feucht, D. W.; Bedrosian, P. A.; Sheehan, A. F.

2012-12-01

276

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

NASA Astrophysics Data System (ADS)

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.

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

2007-12-01

277

What Are The Grand Challenges for Data Mining? KDD-2006 Panel Report  

E-print Network

What Are The Grand Challenges for Data Mining? KDD-2006 Panel Report Gregory Piatetsky Getoor U. of Maryland getoor at cs.umd.edu Mohammed Zaki RPI zaki at cs.rpi.edu ABSTRACT We discuss what, WSJ06]. The DARPA Grand Challenge produced great advances in robotic car navigation in 2005; X

Zaki, Mohammed Javeed

278

Tree rings and multiseason drought variability in the lower Rio Grande Basin, USA  

E-print Network

Tree rings and multiseason drought variability in the lower Rio Grande Basin, USA C. A. Woodhouse,1 to vulnerability to multiseason drought. The lower Rio Grande basin in New Mexico, used as a case study here, has experienced drought conditions over the past 12 years characterized both by low local summer monsoon

Castro, Christopher L.

279

Are differences in ranks good predictors for Grand Slam tennis matches?  

Microsoft Academic Search

This paper tests whether the differences in rankings between individual players are good predictors for Grand Slam tennis outcomes. We estimate separate probit models for men and women using Grand Slam tennis match data from 2005 to 2008. The explanatory variables are divided into three groups: a players past performance, a players physical characteristics, and match characteristics. We estimate three

Julio del Corral; Juan Prieto-Rodrguez

2010-01-01

280

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

Federal Register 2010, 2011, 2012, 2013, 2014

...established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this...with abandoned structures in the Natural Area and a discussion of...

2013-08-26

281

78 FR 9729 - Notice of Meeting, Rio Grande Natural Area Commission  

Federal Register 2010, 2011, 2012, 2013, 2014

...established in the Rio Grande Natural Area Act (16 U.S.C. 460rrr-2...non-Federal land in the Rio Grande Natural Area, as directed by law. Planned agenda topics for this...with abandoned structures in the Natural Area and a tour of the Wild...

2013-02-11

282

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

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Annual Suncoast Offshore Grand Prix; Gulf of Mexico, Sarasota, FL. 100.720 Section 100.720 Navigation... 100.720 Annual Suncoast Offshore Grand Prix; Gulf of Mexico, Sarasota, FL. (a) Regulated area. The regulated area is...

2010-07-01

283

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

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Annual Suncoast Offshore Grand Prix; Gulf of Mexico, Sarasota, FL. 100.720 Section 100.720 Navigation... 100.720 Annual Suncoast Offshore Grand Prix; Gulf of Mexico, Sarasota, FL. (a) Regulated area. The regulated area is...

2011-07-01

284

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

Microsoft Academic Search

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

Mark Leipnik

1995-01-01

285

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

E-print Network

Debris flow deposition and reworking by the Colorado River in Grand Canyon, Arizona Brian J affects downstream flow competence and channel maintenance. Debris flows from 740 tributaries in Grand Canyon, Arizona, transport coarse-grained sediment onto debris fans adjacent to the Colorado River

286

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

287

"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

288

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....

2010-08-13

289

Study of the Effects of Land Use and Land Cover in Laguna Grande Bioluminescent Bay  

E-print Network

or bacteria that live near or on the water's surface. These bioluminescent dinoflagellates range in size from1 Study of the Effects of Land Use and Land Cover in Laguna Grande Bioluminescent Bay Maribel is the Laguna Grande in Las Croabas Fajardo, Puerto Rico. The bay is considered bioluminescent due to the high

Gilbes, Fernando

290

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...

291

CLNS 96/1412 ThreeFamily SO(10) Grand Unification in String Theory  

E-print Network

CLNS 96/1412 Three­Family SO(10) Grand Unification in String Theory Zurab Kakushadze \\Lambda and S­handed families in the four­dimensional heterotic string theory is presented. The model has one SO(10) adjoint be solved by considering grand unification in string theory. As we shall see, after imposing some rather

292

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

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Pensacola Dam and Reservoir, Grand (Neosho) River, Okla. 208...REGULATIONS 208.25 Pensacola Dam and Reservoir, Grand (Neosho) River, Okla...Representative shall operate the dam and reservoir in the interest of flood control as...

2013-07-01

293

C : N : P stoichiometry of dominant riparian trees and arthropods along the Middle Rio Grande  

Microsoft Academic Search

SUMMARY 1. We examined the role of flooding on the leaf nutrient content of riparian trees by comparing the carbon : nitrogen : phosphorus (C : N : P) ratio of leaves and litter of Rio Grande cottonwood (Populus deltoides ssp. wislizenii) in flood and non-flood sites along the Middle Rio Grande, NM, U.S.A. The leaf C : N :

TERESA M. TIBBETS; MANUEL C. MOLLES JR

2005-01-01

294

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

Federal Register 2010, 2011, 2012, 2013, 2014

...storm-related flooding in the Vista Grande Watershed Drainage Basin and the effects of coastal...2013. Background: The Vista Grande watershed area is located in the City of Daly City...northwestern San Mateo County. This watershed is approximately 2.5 square miles...

2013-05-08

295

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

E-print Network

Independent External Peer Review Rio Grande Floodway, San Acacia to Bosque Del Apache, New Mexico and maintenance Office of Management and Budget Probability of Unsatisfactory Performance SADD San Acacia performed an Independent External Peer Review (IEPR) of the Rio Grande Floodway, San Acacia to Bosque Del

US Army Corps of Engineers

296

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

Federal Register 2010, 2011, 2012, 2013, 2014

...USCG-2010-0116] RIN 1625-AA00 Safety Zone; Lake Havasu Grand Prix, Lake...the establishment of a safety zone. An environmental analysis checklist and a categorical exclusion determination are available...Sec. 165.T11-298 Safety zone; Lake Havasu Grand Prix,...

2010-04-22

297

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2013-07-03

298

ECOLOGY OF RIO GRANDE WILD TURKEYS IN SOUTHWEST KANSAS BRIAN L. SPEARS  

E-print Network

ECOLOGY OF RIO GRANDE WILD TURKEYS IN SOUTHWEST KANSAS BRIAN L. SPEARS KERRY L. NICHOLSON ROSS T DEPARTMENT OF WILDLIFE AND PARKS 2006 1 #12;Foreword The Rio Grande wild turkey is a magnificent icon turkey populations are showing declines. Loss of roost trees along riparian corridors are thought

299

THE POPULATION BIOLOGY AND LANDSCAPE ECOLOGY OF RIO GRANDE WILD TURKEYS IN THE ROLLING  

E-print Network

THE POPULATION BIOLOGY AND LANDSCAPE ECOLOGY OF RIO GRANDE WILD TURKEYS IN THE ROLLING PLAINS Department, the National Wild Turkey Federation, the Texas state superfund of the National Wild Turkey OF FIGURES xii CHAPTER I. INTRODUCTION 1 Wild Turkey 1 Rio Grande Wild Turkeys 2 Reasons for Study 3

300

Optimization-Based Navigation for the DARPA Grand Challenge Dmitriy Kogan and Richard M. Murray  

E-print Network

Optimization-Based Navigation for the DARPA Grand Challenge Dmitriy Kogan and Richard M. Murray fields of interest to autonomous robotics, DARPA, the research arm of the Department of Defense of the United States, sponsored the DARPA Grand Challenge (DGC), an off-road race for autonomous, land

Murray, Richard M.

301

Residues of Toxaphene in Insectivorous Birds ( Petrochelidon spp.) From the Rio Grande, Texas  

Microsoft Academic Search

Although it has been documented that wildlife in the Rio Grande Valley (RGV) contain increased concentrations of organochlorine (OC) contaminants, particularly DDE, little has been published on residues of toxaphene throughout this major North American watershed. In this study, 28 liver composites from adult swallows (Petrochelidon spp.) collected along the Rio Grande from 1999 through 2000 were analyzed for toxaphene

K. A. Maruya; K. L. Smalling; M. A. Mora

2005-01-01

302

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

E-print Network

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

303

J. Field Ornithol. 76(1):1220, 2005 Survival of Rio Grande Wild Turkey chicks  

E-print Network

12 J. Field Ornithol. 76(1):12­20, 2005 Survival of Rio Grande Wild Turkey chicks Brian L. Spears,1 determined pre-flight daily survival of Rio Grande Wild Turkey (Meleagris gallopavo intermedia) chicks from, survival, telemetry, turkey Increasing population recruitment through reproductive success is often key

Wallace, Mark C.

304

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-04-18

305

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-02-13

306

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-02-10

307

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-06-26

308

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-02-13

309

76 FR 76156 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...  

Federal Register 2010, 2011, 2012, 2013, 2014

...14316-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...section 4(f) of the Federal Power Act (FPA), proposing to...feasibility of the PEC 1973 Drop Hydroelectric Project (PEC 1973 Project...Secretary-Manager, Grand Coulee Project Hydroelectric Authority, P.O. Box...

2011-12-06

310

76 FR 76156 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...  

Federal Register 2010, 2011, 2012, 2013, 2014

...14317-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...section 4(f) of the Federal Power Act (FPA), proposing to...the Scooteney Outlet Drop Hydroelectric Project (Scooteney Outlet...Secretary-Manager, Grand Coulee Project Hydroelectric Authority, P.O. Box...

2011-12-06

311

76 FR 76153 - Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit Application Accepted...  

Federal Register 2010, 2011, 2012, 2013, 2014

...14318-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary...section 4(f) of the Federal Power Act (FPA), proposing to...the Scooteney Inlet Drop Hydroelectric Project (Scooteney Inlet...Secretary-Manager, Grand Coulee Project Hydroelectric Authority, P.O. Box...

2011-12-06

312

NOTES ON FISHES OF GRAND RIVER, CHOUTEAU CREEK, AND PRYOR CREEK, MAYES COUNTY, OKLAHOMA  

Microsoft Academic Search

comprising an ecotone. Branson considered Grand River an effective barrier to dispersal of fishes between the two faunas. We find that despite marked alteration by impoundment, Grand River remains a boundary between eastern and western fishes. We took typical Ozark fishes such as Notropis boops (bigeye shiner), Notropis camurus (bluntface shiner), Campostoma anomalum (central stoneroller), and Etheostoma spectabile (orangethroat darter)

Loren G. Hill; William J. Matthews; Tony Schene; Kenneth Asbury

1981-01-01

313

78 FR 42543 - Call for Nominations for the Rio Grande Natural Area Commission, Colorado  

Federal Register 2010, 2011, 2012, 2013, 2014

...the Rio Grande Natural Area (Natural Area) and to prepare a management...to non-Federal land in the Natural Area. Since this Commission...committee established under Section 4 of the Rio Grande Natural Area Act of 2006 (16...

2013-07-16

314

Genetic Effects of Hatchery Propagation and Rearing in the Endangered Rio Grande Silvery Minnow, Hybognathus amarus  

Microsoft Academic Search

The Rio Grande silvery minnow, Hybognathus amarus, is a federally endangered cyprinid now confined to the middle Rio Grande, New Mexico, in a fraction of its former range. The precipitous decline of the remaining wild population and lack of recruitment in the summer of 2000 prompted collection and placement of eggs and wild fish in propagation facilities. The aim of

Megan J. Osborne; Melissa A. Benavides; Dominique Al; Thomas F. Turner

2006-01-01

315

Age and diet of fossil California condors in Grand Canyon, Arizona  

Microsoft Academic Search

A dozen new radiocarbon dates, together with a thorough review of its fossil distribution, shed new light on the time and probable cause of extinction of the California condor, Gymnogyps californianus, in Grand Canyon, Arizona. The radiocarbon data indicate that this species became extinct in Grand Canyon, and other parts of the inland West, more than 10,000 years ago in

S. D. EMSLIE

1987-01-01

316

What are the grand challenges for data mining?: KDD2006 panel report  

Microsoft Academic Search

We discuss what makes exciting and motivating Grand Challenge problems for Data Mining, and propose criteria for a good Grand Challenge. We then consider possible GC problems from multimedia mining, link mining, large- scale modeling, text mining, and proteomics. This report is the result of a panel held at KDD-2006 conference.

Gregory Piatetsky-shapiro; Chabane Djeraba; Lise Getoor; Robert Grossman; Ronen Feldman; Mohammed Javeed Zaki

2006-01-01

317

A Parallel Java Grande Benchmark Suite L. A. Smith and J. M. Bull  

E-print Network

A Parallel Java Grande Benchmark Suite L. A. Smith and J. M. Bull EPCC, The King's Buildings Republic. email: xobdrzal@fi.muni.cz Abstract Increasing interest is being shown in the use of Java for large scale or Grande applications. This new use of Java places specific demands on the Java execution

Bull, Mark

318

A new grand canonical ensemble method to calculate first-order phase transitions  

NASA Astrophysics Data System (ADS)

A theory about first-order phase transition of pure fluids is proposed. The theory is developed by combining grand canonical ensemble with density functional for homogeneous fluids. It is based on the fact that the grand partition function of one macroscopic volume is the product of the grand partition functions of its subvolumes. Density fluctuations of molecules determine the relation between the grand partition function and the free energy density. By combining pairs of subvolumes successively, the free energy density is transformed and rapidly becomes stationary. The stationary curve versus molecule density is convex and its linear segments represent phase transitions. The transform leads to the new grand canonical method to calculate phase equilibrium, which is more robust than classic ones. The transform suggests that classical van der Waals loop is physical and essential to phase transition.

Tang, Yiping

2011-06-01

319

Global gridded data set of the oxygen isotopic composition in seawater Allegra N. LeGrande1  

E-print Network

Global gridded data set of the oxygen isotopic composition in seawater Allegra N. LeGrande1 the `source effect' of d18 O on the isotopic composition of precipitation. Citation: LeGrande, A. N., and G. A

320

75 FR 76037 - General Motors Corporation Grand Rapids Metal Center Metal Fabricating Division Including On-Site...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Division Including On-Site Leased Workers From Securitas, Premier, EDS and Quaker Chemical Grand Rapids, MI; Amended Certification...Division, including on- site leased workers from Securitas, Premier and EDS, Grand Rapids, Michigan. The notice was...

2010-12-07

321

75 FR 33326 - Notice of Intent To Establish and Call for Nominations for the Rio Grande Natural Area Commission...  

Federal Register 2010, 2011, 2012, 2013, 2014

...the Rio Grande Natural Area (Natural Area) and prepare a management...to non-Federal land in the Natural Area. DATES: All nominations...committee established under Section 4 of the Rio Grande Natural Area Act (Act) [[Page...

2010-06-11

322

Low energy predictions from supersymmetric grand unified theories  

NASA Astrophysics Data System (ADS)

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.

Rizvi, Syed Shabbar Raza

323

Imaging the changing shoreface along South Carolina's Grand Strand  

NASA Astrophysics Data System (ADS)

The Grand Strand coastal region of South Carolina is located along Long Bay, a sediment starved embayment with few tidal inlets or fluvial sources of sediment input. The area has been the focus of ongoing coastal erosion, shoreface monitoring and geophysical/geologic framework investigations for more than a decade. We have taken a nested approach to studying shoreface morphology, looking across a range of timescales and spatial resolutions, focusing both onshore and off. Our research combines RTK-GPS beach surveys, ground-based LIDAR, beach cameras and aerial photography of the coastline, along with Chirp subbottom profiles, interferometric/multibeam bathymetry, and sidescan sonar surveys across the innershelf. Focusing on the central portion of the Grand Strand, several trends are apparent in observations across a range of time scales. In recent months, storm events and beach renourishment have influenced sediment patterns on the shoreface and innershelf. Evidence from beach profiles, shoreline surveys and sidescan sonar in the months following renourishment suggest a shift in sediment from the upper to lower shoreface and out onto the inner shelf. Pre and post surveys around Tropical Storm Hanna (September 2008) also appear to show a flux of sediment to the inner shelf. In contrast, past storm events appear to have directed sediment onshore and in many cases, the shelf appears to be the primary source of sediment to the region. Over longer time scales, we have observed seasonal variations in the geometry of the shoreface and a correlation between geologic framework and sediment distribution. Subparallel ledges along the innershelf appear to be funneling sediment offshore. Sidescan sonar and Chirp subbottom profiles suggest preservation of meandering tidal paleochannels along the innershelf that may be an important source of sediment to the region. Beach profiles over the past decade suggest a trend of lower shoreface retreat in areas with sediment cover offshore, while the shoreface may be accreting in areas flanked by nearshore hardbottom. Repeat multibeam bathymetry surveys this fall will allow us to more accurately determine the morphology of the shoreface and innershelf, examine coastal morphodynamics and assess the volume of mobile sediment.

Hill, J. C.; Gayes, P. T.; McCoy, C.; Viso, R.

2008-12-01

324

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

...Forest System Lands in the Grand Canyon Watershed; Arizona AGENCY: Bureau of Land Management...in order to protect the Grand Canyon Watershed from adverse effects of locatable mineral...in order to protect the Grand Canyon Watershed from adverse effects of locatable...

2012-01-18

325

Team CIMAR's NaviGATOR: An Unmanned Ground Vehicle for Application to the 2005 DARPA Grand Challenge  

E-print Network

Team CIMAR's NaviGATOR: An Unmanned Ground Vehicle for Application to the 2005 DARPA Grand DARPA Grand Challenge event. After a brief description of the event, the architecture, based on version. Keywords: DARPA Grand Challenge, autonomous navigation, path planning, sensor fusion, world modeling

Florida, University of

326

76 FR 4649 - Grand River Dam Authority; Notice of Intent To File License Application, Filing of Pre...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Project No. 2524-018] Grand River Dam Authority; Notice of Intent To File License...2010. d. Submitted By: Grand River Dam Authority. e. Name of Project: Salina...Superintendent of Hydro Operations, Grand River Dam Authority, P.O. Box 70, Langley,...

2011-01-26

327

Local flows in the Quequn Grande River Estuary, Argentina  

NASA Astrophysics Data System (ADS)

Quequn 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 Quequn-Necochea area and Quequn 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 Quequn 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.

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

2009-05-01

328

Grand canonical Brownian dynamics simulation of colloidal adsorption  

NASA Astrophysics Data System (ADS)

A dynamic simulation of colloidal adsorption has been developed to probe the effects of colloidal interactions on the kinetics and extent of adsorption. The simulation accounts for diffusion by Brownian dynamics to a homogeneous planar adsorption surface from a region of constant chemical potential. A grand canonical Monte Carlo routine is used periodically to re-equilibrate this region. Particle motion in the plane of the surface is subject to either unrestricted diffusion or zero diffusion. Deryaguin-Landau-Verwey-Overbeek pair potentials are used to characterize both particle-particle and particle-surface interactions. The pair potential parameters were chosen to mimic (separately) polystyrene latex microspheres and small globular proteins, two classes of charged colloidal particles for which experimental adsorption data exist. The simulation qualitatively captures the variation in adsorptive capacity with ionic strength distinct to each system: fractional coverage increases for polystyrene latex adsorption but decreases for protein adsorption with increasing salt concentration. In the former, strong lateral repulsion between adsorbed particles appears to govern the extent of adsorption, whereas in the latter, the extent of adsorption is more strongly affected by the screening of the weak attraction between the particle and the surface. Excellent quantitative predictions for polystyrene latex adsorption with and without surface diffusion are obtained without adjustable parameters.

Oberholzer, Matthew R.; Wagner, Norman J.; Lenhoff, Abraham M.

1997-12-01

329

Grand unified theory constrained supersymmetry and neutrinoless double ? decay  

NASA Astrophysics Data System (ADS)

We analyze the contributions to the neutrinoless double ? decay (0??? decay) coming from the grand unified theory (GUT) constrained minimal supersymmetric standard model (MSSM) with trilinear R-parity breaking. We discuss the importance of two-nucleon and pion-exchange realizations of the quark-level 0???-decay transitions. In this context, the questions of reliability of the calculated relevant nuclear matrix elements within the renormalized quasiparticle random phase approximation for several medium and heavy open-shell nuclei are addressed. The importance of gluino and neutralino contributions to 0??? decay is also analyzed. We review the present experiments and deduce limits on the trilinear R-parity breaking parameter ?'111 from the nonobservability of 0??? decay for different GUT constrained supersymmetry scenarios. In addition, a detailed study of limits on the MSSM parameter space coming from the B-->Xs? processes by using the recent CLEO and OPAL results is performed. Some studies in respect to the future 0???-decay project GENIUS are also presented.

Wodecki, Andrzej; Kami?ski, Wies?aw A.; imkovic, Fedor

1999-12-01

330

Lunar and Terrestrial Planet Formation in the Grand Tack Scenario  

E-print Network

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) ...

Jacobson, Seth A

2014-01-01

331

Grand minima of solar activity and sociodynamics of culture  

NASA Astrophysics Data System (ADS)

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.

Vladimirsky, B. M.

2012-12-01

332

Hydrologic Variability in Rio Grande Riparian Ecosystems, New Mexico, USA  

NASA Astrophysics Data System (ADS)

Water consumption by invasive vegetation and restoration of native riparian ecosystems are receiving considerable attention along the Rio Grande corridor in central New Mexico, USA. Since 2000, we have measured evapotranspiration (ET) to estimate water use at several sites composed of native and exotic vegetation. We have also monitored water table (WT) depths and flood events to help determine restoration capability. Drought conditions and below normal runoff have prevailed during this time. Annual growing season rates of ET varied from 70 to 134 cm. ET was greatest in a native cottonwood forest with a dense, exotic understory, lowest in a less dense stand of exotic saltcedar mixed with native saltgrasses, and intermediate at a dense, monospecific saltcedar stand. In 2004, after exotics had been removed from the cottonwood site, ET declined 8% from the previous three year mean, while rising 3% to 6% at the other, untreated sites. WT hydrographs ranged from relatively shallow (<1.5 m) and uniform to relatively deep (>2.5 m) and highly variable. As the drought continued, the WT at the dense saltcedar site dropped below 3 m during much of the growing season. This site was also the only location that received flooding, although it was inundated very little from 2000 to 2003. Given the physical alterations and climatic variability inherent to this riverine system, long term data from different locations targeted for restoration help capture the range of hydrological conditions and provide valuable information for water resource management and restoration planning.

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

2005-12-01

333

Young Clusters in Nearby, Grand-Design Spirals  

NASA Astrophysics Data System (ADS)

The distributions of stellar clusters in 10 nearby, grand-design spiral galaxies were studied using deep JHK-maps from HAWK-I/VLT. The properties of the cluster complexes were analyzed using (H-K)-(J-H) diagrams. Two groups of clusters can be identified where the main one is associated to old clusters with low extinction while the other, less populated, consists of very young clusters (i.e. < 10 Myr) with an average reddening around A_{V} 7m. The (J-K)-MK diagrams show two branches of clusters populated by old and young clusters, respectively. The gap between them suggests a rapid reduction of extinction in the clusters at an early evolutionary phase. Statistical tests, taking the sample sizes into account, show that the cluster distribution functions (CDF) are different in arm and inter-arm regions, for strong spiral perturbations, with the former being shifted to brighter magnitudes by at least 0.4m. Also the star formation rates in the strong arms were found to be 2-5 times higher than those in the inter-arm regions.

Grosbl, Preben; Dottori, Horacio

334

Modeling Fecal Coliform Contamination in the Rio Grande  

NASA Astrophysics Data System (ADS)

This study examines sources of fecal coliform in Segment 2302 of the Rio Grande, located south of the International Falcon Reservoir in southern Texas. The watershed is unique because the contributing drainage areas lie in Texas and Mexico. Additionally, the watershed is mostly rural, with populated communities known as "colonias." The colonias lack sewered systems and discharge sanitary water directly to the ground surface, thus posing an increased health hazard from coliform bacteria. Monitoring data confirm that Segment 2302 is not safe for contact recreation due to elevated fecal coliform levels. The goal of the study was to simulate the observed exceedences in Segment 2302 and evaluate potential strategies for their elimination. Fecal coliform contributions from ranching and colonia discharges were modeled using the Hydrologic Simulation Program-Fortran (HSPF). Model results indicated that the regulatory 30-day geometric mean fecal coliform concentration of 200 colony forming units (cfu) per 100 milliliters is exceeded approximately three times per year for a total of 30 days. Ongoing initiatives to improve wastewater facilities will reduce this to approximately once per year for 14 days. Best management practices will be necessary to reduce cattle access to streams and eliminate all exceedences. The developed model was limited by the relatively sparse flow and fecal coliform data.

Laware, Paul; Rifai, Hanadi S.

2006-04-01

335

Grand-canonical quantized liquid density-functional theory in a Car-Parrinello implementation  

NASA Astrophysics Data System (ADS)

Quantized Liquid Density-Functional Theory (QLDFT) [S. Patchkovskii and T. Heine, Phys. Rev. E 80, 031603 (2009)], 10.1103/PhysRevE.80.031603, a method developed to assess the adsorption of gas molecules in porous nanomaterials, is reformulated within the grand canonical ensemble. With the grand potential it is possible to compare directly external and internal thermodynamic quantities. In our new implementation, the grand potential is minimized utilizing the Car-Parrinello approach and gives, in particular for low temperature simulations, a significant computational advantage over the original canonical approaches. The method is validated against original QLDFT, and applied to model potentials and graphite slit pores.

Walther, Christian F. J.; Patchkovskii, Serguei; Heine, Thomas

2013-07-01

336

Magntisme des cristaux de molcules grand spin  

NASA Astrophysics Data System (ADS)

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-Stckelberg 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 cr, dans les dernires annes du vingtime sicle, des molcules magntiques dont le spin (typiquement s=10) est suffisamment grand pour que le temps de relaxation de l'aimantation puisse devenir macroscopique basse temprature. Ces nouveauts donnent lieu des phnomnes nouveaux dont nous donnons ici une description dtaille. Nous commenons par rappeler les concepts fondamentaux du magntisme, tels que l'anisotropie et l'change, puis nous dcrivons les molcules grand spin et nous les situons dans le monde du magntisme. Dans le deuxime chapitre, nous tudions la relaxation magntique thermiquement active, en utilisant l'quation matresse et en valuant ses coefficients partir de l'interaction spin-phonons et de la rgle d'or. Le troisime chapitre est consacr l'effet tunnel d'un spin isol, et nous calculons l'cart tunnel par des mthodes simples. Nous obtenons en particulier les valeurs du champ magntique o la sparation tunnel s'annule (points "diaboliques"). Dans le quatrime chapitre, nous dcrivons brivement des mthodes alternatives bases sur les intgrales sur les chemins. Dans le cinquime chapitre, nous tudions l'effet, toujours sur un spin isol, d'un champ magntique dpendant du temps, qui dclenche le retournement partiel des spins au moment o la valeur du champ autorise l'effet tunnel. Le sixime chapitre est consacr l'interaction du spin avec son environnement basse temprature, quand la relaxation magntique est due aux interactions dipolaires avec les autres spins molculaires et avec les spins nuclaires. Dans le septime et dernier chapitre, nous traitons l'effet tunnel du spin entre tats excits, phnomne original et important dans ces matriaux. Enfin, dans six annexes, nous rappelons les constantes fondamentales et les diffrentes notations courantes, la correspondance entre les divers types de champs magntiques, la dmonstration de la loi d'Arrhenius partir de l'

Villain, J.

2003-01-01

337

Interacting Topological Insulator and Emergent Grand Unified Theory  

E-print Network

Motivated by the Pati-Salam Grand Unified Theory, we study $(4+1)d$ topological insulators with $SU(4) \\times SU(2)_1 \\times SU(2)_2$ symmetry, whose $(3+1)d$ boundary has 16 flavors of left-chiral fermions, which form representations $(\\mathbf{4}, \\mathbf{2}, \\mathbf{1})$ and $(\\bar{\\mathbf{4}}, \\mathbf{1}, \\mathbf{2})$. The key result we obtain is that, without any interaction, this topological insulator has a $\\mathbb{Z}$ 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 $SU(4) \\times SU(2)_1 \\times SU(2)_2$ lattice gauge field, the Pati-Salam GUT can be fully regularized as the boundary states of a $(4+1)d$ topological insulator with a {\\it 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 {\\it 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.

Yi-Zhuang You; Cenke Xu

2014-12-15

338

Grand Challenge Competition to Predict In Vivo Knee Loads  

PubMed Central

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 years 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

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

2013-01-01

339

Lunar and terrestrial planet formation in the Grand Tack scenario  

NASA Astrophysics Data System (ADS)

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 timescale 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 60 and 130 My after the formation of the first solids, and was caused most likely by an object with a mass similar to that of Mars.

Jacobson, S. A.; Morbidelli, A.

2014-09-01

340

Density wave triggered star formation in grand design spirals  

NASA Technical Reports Server (NTRS)

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.

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

1993-01-01

341

High performance computing and communications grand challenges program  

SciTech Connect

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.

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

1994-10-01

342

Interrelating Fermion Masses, CP Violation and Baryogenesis via Grand Unification  

NASA Astrophysics Data System (ADS)

An attempt is made to interrelate (i) fermion masses, (ii) neutrino oscillations, (iii) CP and flavor violations, and (iv) baryogenesis via leptogenesis, within supersymmetric grand unification, based on an effective symmetry which is either G(224) = SU(2)L SU(2)R SU(4)c or SO(10). Reviewing the framework proposed in this context by Babu, Pati and Wilczek (BPW), which successfully describes fermion masses and neutrino oscillations, a recent work by Babu, Rastogi and me is presented. It is shown that the BPW framework can be extended rather simply to include CP violation that is intimately linked to fermion masses and neutrino oscillations. Including SM and SUSY contributions, it is found that the extension can correctly account for the observed flavor and/or CP violations in ?mK, ?mBd, S(Bd ? J/?KS) as well as ?K, while retaining the successes of the BPW framework as regards fermion masses and neutrino oscillations. While SUSY contribution is small (? few%) for the first three quantities, that to ?K is sizable (~ 20-25%) and negative (as desired) compared to that of the SM. The model predicts S(Bd ? ?KS) to be in the range +(0.65-0.73), close to the SM prediction. The model yields Re(?'/?)SUSY ? +(4 - 14) 10-4 the relevance of this contribution can be assessed only when the associated matrix elements are known reliably. The model also predicts that the electric dipole moments of the neutron and the electron, as well as the rare processes ? ? e? and ? ? ??, should be discovered with improvements in the current limits by factors of 10 to 100. Last but not the least, the model naturally leads to baryogenesis via leptogenesis in good accord with observation.

Pati, Jogesh C.

2005-08-01

343

Interrelating Fermion Masses, CP Violation and Baryogenesis via Grand Unification  

NASA Astrophysics Data System (ADS)

An attempt is made to interrelate (i) fermion masses, (ii) neutrino oscillations, (iii) CP and flavor violations, and (iv) baryogenesis via leptogenesis, within supersymmetric grand unification, based on an effective symmetry which is either G(224) = SU(2)L SU(2)R SU(4)c or SO(10). Reviewing the framework proposed in this context by Babu, Pati and Wilczek (BPW), which successfully describes fermion masses and neutrino oscillations, a recent work by Babu, Rastogi and me is presented. It is shown that the BPW framework can be extended rather simply to include CP violation that is intimately linked to fermion masses and neutrino oscillations. Including SM and SUSY contributions, it is found that the extension can correctly account for the observed flavor and/or CP violations in ?mK, ?mBd, S(Bd ? J/?KS) as well as ?K, while retaining the successes of the BPW framework as regards fermion masses and neutrino oscillations. While SUSY contribution is small (? few%) for the first three quantities, that to ?K is sizable (~ 20-25%) and negative (as desired) compared to that of the SM. The model predicts S(Bd ? ?KS) to be in the range +(0.65-0.73), close to the SM prediction. The model yields Re(?'/?)SUSY ? +(4 - 14) 10-4; the relevance of this contribution can be assessed only when the associated matrix elements are known reliably. The model also predicts that the electric dipole moments of the neutron and the electron, as well as the rare processes ? ? e? and ? ? ??, should be discovered with improvements in the current limits by factors of 10 to 100. Last but not the least, the model naturally leads to baryogenesis via leptogenesis in good accord with observation.

Pati, Jogesh C.

344

Decontamination of nuclear systems at the Grand Gulf Nuclear Station  

SciTech Connect

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.

Weed, R.D. [R.D. Weed Consulting Engineers, Walnut Creek, CA (United States); Baker, K.R.

1996-12-31

345

Restoration potential of Rio Grande riparian ecosystems amid hydroclimatic challenges  

NASA Astrophysics Data System (ADS)

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.

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

2013-12-01

346

Potential Water Savings in Irrigated Agriculture in the Lower Rio Grande Basin of Texas  

E-print Network

This report was completed for the Senate Bill 1 Rio Grande Regional Water Planning Project (Region M) by the District Management System (DMS) team under the direction of Dr. Guy Fipps. Funding was provided through the Texas Agricultural Experiment...

Fipps, Guy

2001-08-01

347

The SO2 Allowance Trading System: The Ironic History of a Grand Policy Experiment  

E-print Network

Two decades have passed Two decades have passed since the Clean Air Act Amendments of 1990 launched a grand experiment in market-based environmental policy: the SO2 cap-and-trade system. That system performed well but ...

Schmalensee, Richard

348

78 FR 46312 - Spruce Beetle Epidemic and Aspen Decline Management Response; Grand Mesa, Uncompahgre and...  

Federal Register 2010, 2011, 2012, 2013, 2014

...DEPARTMENT OF AGRICULTURE Forest Service Spruce Beetle Epidemic and Aspen Decline...Grand Mesa, Uncompahgre and Gunnison National Forests (GMUG), Colorado AGENCY: Forest Service, USDA. ACTION: Notice of intent...

2013-07-31

349

75 FR 22333 - Safety Zone; Michigan City Super Boat Grand Prix, Lake Michigan, Michigan City, IN  

Federal Register 2010, 2011, 2012, 2013, 2014

...Coast Guard 33 CFR Part 165 [Docket No. USCG-2010-0235] RIN 1625-AA00 Safety Zone; Michigan City Super Boat Grand Prix, Lake Michigan, Michigan City, IN AGENCY: Coast Guard, DHS. ACTION: Notice of proposed...

2010-04-28

350

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

Federal Register 2010, 2011, 2012, 2013, 2014

...Coast Guard 33 CFR Part 165 [Docket No. USCG-2010-0235] RIN 1625-AA00 Safety Zone; Michigan City Super Boat Grand Prix, Lake Michigan, Michigan City, IN AGENCY: Coast Guard, DHS. ACTION: Temporary final...

2010-06-21

351

Workshop on The Rio Grande Rift: Crustal Modeling and Applications of Remote Sensing  

NASA Technical Reports Server (NTRS)

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.

Blanchard, D. P. (editor)

1980-01-01

352

The systemic and ideological sources of grand strategic doctrine : American foreign policy in the twentieth century  

E-print Network

What explains the puzzling variation in America's foreign policy posture? This study proposes and tests a theory of American grand strategy that places an emphasis on two key variables: the ideological content of American ...

Green, Brendan Rittenhouse

2011-01-01

353

Flow, Salts, and Trace Elements in the Rio Grande: A Review  

E-print Network

options for the con- centrated saline water. Salinity control through modification of evapo- ration or evapotranspiration is another potential measure. The long stretch of the Rio Grande and its tributaries is infested with a thick stand of Tamarix...

Miyamoto, S.; Fenn, L. B.; Swietlik, D.

1995-01-01

354

A Study of Institutional Factors Affecting Water Resource Development in the Lower Rio Grande Valley, Texas  

E-print Network

Despite numerous studies of and plans for the use of land and water resources of the lower Rio Grande Valley for efficient agricultural production, development has lagged and the production potential has not been realized. Institutional factors...

Trock, W. L.; Casbeer, T. J.

355

International cooperation between the United States and Mexico: addressing water quality of the Lower Rio Grande  

E-print Network

Water quantities of the Lower Rio Grande were apportioned between Mexico and Texas through a treaty in 1944. The treaty defines the mandate of the International Boundary and Water Commission, an international institution composed of sections...

Crouch, Kellie Gene

2012-06-07

356

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

Federal Register 2010, 2011, 2012, 2013, 2014

...the decline of the Rio Grande silvery minnow is attributed primarily to destruction and modification of its habitat due to dewatering and diversion of water, water impoundment, and modification of the river (channelization). Competition and...

2010-02-22

357

YWCA building near the corner of Grand Central Avenue and Plant Avenue  

Microsoft Academic Search

Black and white photograph of the Young Women's Christian Association (YWCA) building in Tampa's Hyde Park neighborhood. The two-storey building is framed by palm trees, and the street sign for Grand Central Avenue is visible.

Burgert Brothers

1921-01-01

358

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

SciTech Connect

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.

Rhodes, Jonathan J.; Greene, M. Jonas; Purser, Michael D. (Columbia River Inter-Tribal Fish Commission, Portland, OR)

2000-01-01

359

Exploring solar grand minimum episodes through a time delay dynamo model  

NASA Astrophysics Data System (ADS)

Fluctuations in the 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 dynamo source regions. We show that cycle to cycle variation and Maunder-like grand minima are naturally produced in the system when the poloidal field generation mechanism (the alpha-effect) involves a stochastic component. Our analysis shows that a Babcock-Leighton alpha-effect alone cannot restart the solar cycle once it gets into a grand minimum. An additional alpha-effect, capable of working on weak toroidal magnetic fields, such as that driven by helical turbulence, is necessary to recover the solar cycle. Our result demonstrates the importance of a small-scale alpha-effect and shows how self-consistent entry and exit from grand minima like episodes is possible.

Hazra, Soumitra; Nandi, Dibyendu

2012-07-01

360

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

Code of Federal Regulations, 2011 CFR

...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

2011-07-01

361

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

Code of Federal Regulations, 2010 CFR

...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

2010-07-01

362

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

Code of Federal Regulations, 2014 CFR

...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

2014-07-01

363

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

Code of Federal Regulations, 2012 CFR

...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

2012-07-01

364

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

Code of Federal Regulations, 2013 CFR

...All coordinates referenced use datum: NAD 83...All coordinates referenced use datum: NAD 83. (4) All vessel...Offshore Grand Prix, exiting Big Carlos Pass between...All coordinates referenced use datum: NAD 83....

2013-07-01

365

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

Code of Federal Regulations, 2011 CFR

... Albuquerque-Mid Rio Grande Intrastate Air Quality Control Region. 81.83 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions 81.83...

2011-07-01

366

Les protocoles du got Une sociologie positive des grands amateurs de musique  

E-print Network

Les protocoles du goût Une sociologie positive des grands amateurs de musique in Regards croisés recherche comparative sur les grands amateurs de musique que nous avons menée a pour objet de proposer une sociologie positive du goût musical. Elle vise de façon centrale les amateurs de musique classique, tout en s

Boyer, Edmond

367

Evolution of Irrigation Districts and Operating Institutions: Texas, Lower Rio Grande Valley  

E-print Network

TR-228 July 2003 Evolution of Irrigation Districts and Operating Institutions: Texas, Lower Rio Grande Valley Megan J. Stubbs M. Edward Rister Ronald D. Lacewell John R. Ellis Allen W. Sturdivant John R... Megan J. Stubbs M. Edward Rister Ronald D. Lacewell John R. Ellis Allen W. Sturdivant John R. C. Robinson Linda Fernandez Texas Water Resources Institute Texas A&M University Rio Grande Basin Initiative is administered...

Fernandez, Linda; Robinson, John R.C.; Lacewell, Ronald D.; Rister, M. Edward; Ellis, John R.; Sturdivant, Allen W.; Stubbs, Megan J.

368

Communiqu de presse -Mars 2013 Prolongation de l'exposition Dinosaure, la vie en grand  

E-print Network

Communiqué de presse - Mars 2013 Prolongation de l'exposition « Dinosaure, la vie en grand » jusqu'au 24 juin 2013 En raison de son vif succès auprès du public, l'exposition « Dinosaure, la vie en grand dinosaures : les sauropodes, des herbivores géants, pouvant peser 90 tonnes, et qui ont vécu pendant environ

369

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

PubMed Central

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

2014-01-01

370

Dawn Grand Map Vesta Fast Neutron Residual V1.0  

NASA Astrophysics Data System (ADS)

These data are maps of fast neutron residual count rates from the GRaND plus Z boron loaded sensor. The nominal fast neutron count rates were detrended using the GRaND epithermal neutron map to produced this residual map. The residual map is related to the average atomic mass on Vesta. Details of the map and data reduction are described in LAWRENCEETAL2013.

Lawrence, D. J.

2014-06-01

371

Texas Legislative and Irrigation Districts of the Rio Grande River Basin: A Map Series  

E-print Network

EM-102 2008 Texas Legislative and Irrigation Districts of the Rio Grande River Basin: A Map Series By Eric Leigh and Guy Fipps July 2008 Rio Grande Basin Initiative Irrigation Technology Center Texas Agri...: Eric Leigh, Extension Associate Guy Fipps, Professor and Extension Agricultural Engineer Mostafa Eskandari, Graduate Student Biological and Agricultural Engineering Department 2117 Texas A&M University College Station, 77843-2117 979...

Leigh, Eric; Fipps, G.

372

Economic Implications of Alternative Cotton Production Strategies in the Lower Rio Grand Valley of Texas.  

E-print Network

of Literature 3 METHOD OF ANALYSIS 4 Data Development 4 Statistical Analysis 4 Budgeting Analysis 5 Breakeven Analysis 6 PRODUCTION AND ECONOMIC IMPLICATIONS 6 Production Implications 6 Aggregate Yield Effect 6 Water Practice Effect 11 Variety Effect... PRODUCTION PRACTICES OF COTTON IN THE LOWER RIO GRANDE VALLEY OF TEXAS Economic Implications of Alternative Cotton Production Strategies in the Lower Rio Grande Valley of Texas, 1973-78 AUTHORS R. K. Shaunak, formerly research assistant, Texas A...

Shaunak, R. K.; Lacewell, R. D.; Norman, John

1982-01-01

373

Riparian habitat change along the Isleta-Belen reach of the Rio Grande  

Microsoft Academic Search

We provide a summary of vegetation changes over a 11 -year period (1 984-1 995) in the middle reach of the Rio Grande. Hink and Ohmart (1 984) surveyed and mapped riparian vegetation along the middle Rio Grande as part of an extensive biological inventory conducted for the Army Corps of Engineers. We field-assessed and remapped the Isleta-Belen reach in

Joanne Mount; William Krausmanl; Deborah M. Finch

374

Formation of the Grand Canyon 5 to 6 million years ago through integration of older palaeocanyons  

NASA Astrophysics Data System (ADS)

The timing of formation of the Grand Canyon, USA, is vigorously debated. In one view, most of the canyon was carved by the Colorado River relatively recently, in the past 5-6 million years. Alternatively, the Grand Canyon could have been cut by precursor rivers in the same location and to within about 200 m of its modern depth as early as 70-55 million years ago. Here we investigate the time of formation of four out of five segments of the Grand Canyon, using apatite fission-track dating, track-length measurements and apatite helium dating: if any segment is young, the old canyon hypothesis is falsified. We reconstruct the thermal histories of samples taken from the modern canyon base and the adjacent canyon rim 1,500 m above, to constrain when the rocks cooled as a result of canyon incision. We find that two of the three middle segments, the Hurricane segment and the Eastern Grand Canyon, formed between 70 and 50 million years ago and between 25 and 15 million years ago, respectively. However, the two end segments, the Marble Canyon and the Westernmost Grand Canyon, are both young and were carved in the past 5-6 million years. Thus, although parts of the canyon are old, we conclude that the integration of the Colorado River through older palaeocanyons carved the Grand Canyon, beginning 5-6 million years ago.

Karlstrom, Karl E.; Lee, John P.; Kelley, Shari A.; Crow, Ryan S.; Crossey, Laura J.; Young, Richard A.; Lazear, Greg; Beard, L. Sue; Ricketts, Jason W.; Fox, Matthew; Shuster, David L.

2014-03-01

375

Numerical modeling of the late Cenozoic geomorphic evolution of Grand Canyon, Arizona  

NASA Astrophysics Data System (ADS)

The late Cenozoic geomorphic evolution of Grand Canyon has been influenced by three primary tectonic and drainage adjustment events. First, incision into the Paleozoic strata of the southwestern margin of the Colorado Plateau began at 16 Ma in response to relief production along the Grand Wash Fault. Second, the ancestral Upper Colorado River reversed drainage and became integrated with the Lower Colorado River basin through Grand Canyon between 5.5 and 6 Ma. Third, the Colorado River was influenced by Plio- Quaternary normal faulting along the Hurricane and Toroweap Faults. Despite the relatively firm constraints available on the timing of these events, the geomorphic evolution of Grand Canyon is still not well constrained and many questions remain. For example, was there a deeply-incised gorge in western Grand Canyon before Colorado River integration? How and where was the Colorado River integrated? How have incision rates varied in space and time? In this paper, I describe the results of a numerical modeling study designed to address these questions. The model integrates the stream power model for bedrock channel erosion with cliff retreat and the flexural-isostatic response to erosion. The model honors the structural geology of the Grand Canyon region, including the variable erodibility of rocks in the Colorado Plateau and the occurrence of Plio-Quaternary normal faulting along the Hurricane-Toroweap Fault system. We present the results of two models designed to bracket the possible drainage architectures of the southwestern margin of the Colorado Plateau in Miocene time. In the first model, we assume a 13,000 km2 drainage basin primarily sourced from the Hualapai and Coconino Plateaux. The results of this model indicate that relief production along the Grand Wash fault initiated the formation of a large (700 m) knickpoint that migrated headward at a rate of 15 km/Myr prior to drainage integration at 6 Ma to form a deep gorge in western Grand Canyon. This model also illustrates that integration of the Colorado River increased the rate of knickpoint migration to 60 km/Myr, resulting in rapid incision of eastern Grand, Marble, and Glen Canyons down to the level of the Redwall Limestone from 6-4 Ma. Widening of Grand Canyon by cliff retreat triggered flexural- isostatic rebound and renewed river incision of up to 400 m in Plio-Quaternary time. Plio-Quaternary normal faulting significantly dampened incision rates in western Grand Canyon relative to eastern Grand Canyon. As an alternative, we also consider the results of a model in which no incision in western Grand Canyon is assumed prior to 6 Ma. In that model, headward erosion prior to 6 Ma was not significant (by assumption), but the remaining results of the model are similar to that of the first model for the post-6 Ma period, illustrating the robustness of the post-integration behavior of the model with respect to pre-integration drainage scenarios. The results of the first model illustrate that headward erosion could be sufficient to capture the ancestral Upper Colorado River east of the Shiwitz Plateau, but the limited volume of Miocene clastic debris in the Grand Wash Trough and adjacent basins requires that slow rates of cliff widening and/or significant sediment storage in western Grand Canyon be invoked in order for this model to be consistent with the stratigraphic record.

Pelletier, J. D.

2008-12-01

376

Environmental monitoring report on the US Department of Energy's Grand Junction Projects Office facility, Grand Junction, Colorado, for calendar year 1987  

SciTech Connect

This report presents results of environmental monitoring activities conducted in 1987 at the US Department of Energy's (DOE) Grand Junction Projects Office (GJPO) Facility in Colorado. The site is included under the DOE's Defense Decontamination and Decommissioning (Defense D and D) Program.

Not Available

1988-05-01

377

The occurrence and characteristics of grand solar minima and maxima during the Holocene epoch  

NASA Astrophysics Data System (ADS)

Observations of the Sun since 1610 AD show that the activity level of the Sun varies from the Maunder Minimum (1645-1715), when sunspots almost completely vanished from the solar surface, to the enhanced activity level since the middle of the 20th century. Maunder Minimum-like periods are believed to represent a special state of the solar dynamo and they pose a challenge for solar dynamo theory and models, in part because the current models do not agree on the frequency and nature of this phenomenon. Similarly, the models do not robustly address whether grand minima represent regular or random characteristics of the solar dynamo. Information on solar variations prior to 1610 relies on past production rates of cosmogenic nuclides, such as 10Be and 14C. Cosmogenic nuclides are produced in the atmosphere by interactions of galactic cosmic ray particles from space with atmospheric elements, such as N and O. Their production rates are inversely correlated with solar magnetic activity and the geomagnetic field intensity due to the non-linear shielding effect of the solar magnetic field and the geomagnetic dipole field. In this study, we use the IntCal13 14C and the GRIP 10Be records to calculate the solar modulation potential for the overlapping time period that approximately span the last 8000 years. Based on the solar modulation potential, we study the occurrence and characteristics of grand minima and grand maxima. In our approach, a period is only defined as a grand minimum or maximum if it can be identified as such in both reconstructions (14C and 10Be) based on Gaussian statistics. Based on this approach, we identify 19 grand minima and 15 grand maxima for the period spanning the last 8000 years. We also investigate whether the occurrence of these grand minima and grand maxima is best understood as a stochastic or non-stochastic process using waiting time distribution analysis. Furthermore, wavelet analyses of the solar modulation potential reconstructions reveal that the 22-year Hale cycle weakens during grand minimum episodes, whereas it's more pronounced during grand maximum periods. Such observations may serve as an important guide for solar dynamo models, and, in turn, improve our understanding of the processes underlying solar variability.

Inceoglu, Fadil; Simoniello, Rosaria; Faurschou Knudsen, Mads; Karoff, Christoffer; Olsen, Jesper

2014-05-01

378

Maternal Grand Multiparity and the Risk of Severe Mental Disorders in Adult Offspring  

PubMed Central

Background Previous studies have shown that maternal grand multiparity may predict an increased risk of mental disorders in young adult offspring, but whether such effects persist throughout adulthood remains unknown. The current study examined if maternal grand multiparity predicts the risks of severe mental disorders, suicides, suicide attempts and dementias throughout adult life. Methods Our study sample comprised 13243 Helsinki Birth Cohort Study 19341944 participants (6905 men and 6338 women). According to hospital birth records, 341 offspring were born to grand multiparous mothers. From Finnish national hospital discharge and causes of death registers, we identified 1682 participants diagnosed with mental disorders during 19692010. Results Maternal grand multiparity predicted significantly increased risks of mood disorders (Hazard Ratio?=?1.64, p?=?0.03), non-psychotic mood disorders (Hazard Ratio?=?2.02, p?=?0.002), and suicide attempts (Hazard Ratio?=?3.94, p?=?0.01) in adult offspring. Furthermore, women born to grand multiparous mothers had significantly increased risks of any severe mental disorder (Hazard Ratio?=?1.79, p?=?0.01), non-psychotic substance use disorders (Hazard Ratio?=?2.77, p?=?0.02) schizophrenia, schizotypal and delusional disorders (Hazard Ratio?=?2.40, p?=?0.02), mood disorders (Hazard Ratio?=?2.40, p?=?0.002), non-psychotic mood disorders (Hazard Ratio?=?2.91, p<0.001), and suicide attempts (Hazard Ratio?=?5.05, p?=?0.01) in adulthood. The effects of maternal grand multiparity on offspring psychopathology risk were independent of maternal age and body mass index at childbirth, and of year of birth, sex, childhood socioeconomic position, and birth weight of the offspring. In contrast, no significant effects were found among men. Conclusions Women born to grand multiparous mothers are at an increased risk of severe mental disorders and suicide attempts across adulthood. Our findings may inform the development of preventive interventions for mental disorders. PMID:25493431

Lahti, Marius; Eriksson, Johan G.; Heinonen, Kati; Kajantie, Eero; Lahti, Jari; Wahlbeck, Kristian; Tuovinen, Soile; Pesonen, Anu-Katriina; Mikkonen, Maiju; Osmond, Clive; Rikknen, Katri

2014-01-01

379

Grande Ronde Basin Spring Chinook Salmon Captive Broodstock Program, 1995-2002 Summary Report.  

SciTech Connect

The Grande Ronde Basin once supported large runs of chinook salmon Oncorhynchus tshawytscha and estimated peak escapements in excess of 10,000 occurred as recently as the late 1950's (U.S. Army Corps of Engineers 1975). Natural escapement declines in the Grande Ronde Basin have been severe and parallel those of other Snake River populations. Reduced productivity has primarily been attributed to increased mortality associated with downstream and upstream migration past eight dams and reservoirs in the Snake and Columbia rivers. Reduced spawner numbers, combined with human manipulation of previously important spawning and rearing habitat in the Grande Ronde Basin, have resulted in decreased spawning distribution and population fragmentation of chinook salmon in the Grande Ronde Basin (Figure 1; Table 1). Escapement of spring/summer chinook salmon in the Snake River basin included 1,799 adults in 1995, less than half of the previous record low of 3,913 adults in 1994. Catherine Creek, Grande Ronde River and Lostine River were historically three of the most productive populations in the Grande Ronde Basin (Carmichael and Boyce 1986). However, productivity of these populations has been poor for recent brood years. Escapement (based on total redd counts) in Catherine Creek and Grande Ronde and Lostine rivers dropped to alarmingly low levels in 1994 and 1995. A total of 11, 3 and 16 redds were observed in 1994 in Catherine Creek, upper Grande Ronde River and Lostine River, respectively, and 14, 6 and 11 redds were observed in those same streams in 1995. In contrast, the maximum number of redds observed in the past was 505 in Catherine Creek (1971), 304 in the Grande Ronde River (1968) and 261 in 1956 in the Lostine River (Tranquilli et al 2003). Redd counts for index count areas (a standardized portion of the total stream) have also decreased dramatically for most Grande Ronde Basin streams from 1964-2002, dropping to as low as 37 redds in the 119.5 km in the index survey areas in 1995 from as high as 1,205 redds in the same area in 1969 (Table 1). All streams reached low points (0-6 redds in the index areas) in the 1990's, except those in which no redds were found for several years and surveys were discontinued, such as Spring, Sheep and Indian creeks which had a total of 109 redds in 1969. The Minam and Wenaha rivers are tributaries of the Grande Ronde River located primarily in wilderness areas. Chinook salmon numbers in these two streams (based on redd counts) also decreased dramatically beginning in the early 1970's (Table 1). Since then there have been a few years of increasing numbers of redds but counts have generally been 25-40% of the number seen in the 1960's. No hatchery fish have been released into either of these streams and we monitor them during spawning ground surveys for the presence of hatchery strays. These populations will be used as a type of control for evaluating our supplementation efforts in Catherine Creek, upper Grande Ronde River and Lostine River. In this way, we can attempt to filter out the effects of downstream variables, over which we have no control, when we interpret the results of the captive broodstock program as the F1 and F2 generations spawn and complete their life cycles in the wild. The Grande Ronde Basin Captive Broodstock Program was initiated because these chinook salmon populations had reached critical levels where dramatic and unprecedented efforts were needed to prevent extinction and preserve any future options for use of endemic fish for artificial propagation programs for recovery and mitigation. This program was designed to quickly increase numbers of returning adults, while maintaining the genetic integrity of each endemic population.

Hoffnagle, Timothy; Carmichael, Richard; Noll, William

2003-12-01

380

Promoting Undergraduate Research at Grand Valley State University  

NASA Astrophysics Data System (ADS)

Grand Valley State University (GVSU) is a relatively young, rapidly growing, predominately undergraduate institution of about 20,000 students located in western Michigan in which undergraduate research plays a vital role in the education of our students. Student research is supported and actively promoted by 1) creating university funding opportunities and taking advantage of small outside funding sources 2) building a tradition of undergraduate research 3) incorporating small research activities into classes and 4) educating students explicitly in how to prepare a professional poster, give a professional talk and write a journal article. As the saying goes, if you have money, the students will come. At GVSU most students recognize the value of a research experience but need income to pay for college expenses. The internally funded Student Summer Scholars program at GVSU provides student salary and faculty stipend for a summer research project (\\6000 per grant). The geology department has also been successful at obtaining grants from the NASA Michigan Space Grant Consortium (\\5,000 plus a 100% GVSU match). We have been successful in using these easier to obtain smaller grants to fund undergraduate projects. In some cases small grants actually allow us to pursue "risky" or otherwise difficult to fund projects. Undergraduate research "counts" at GVSU and once a tradition and critical mass of undergraduate research has been established, it can become self-sustaining. To recognize the achievements of undergraduate research at GVSU, there is an annual Student Scholarship Day in which the students (580 university wide) present the results of their research. Also, by persuading students in our introductory classes (for extra credit) to attend Student Scholarship Day, the students, early in their college career, can see what fellow students can accomplish and student presenters can revel in their role of researcher and educator. Such an event helps to build a tradition of undergraduate research. Students are more likely to tackle larger research projects if they have gained confidence and experience by successfully completing smaller research projects. Many upper level geology courses require that students complete a research project. Research projects can range from investigating the grain size variability of river sediment in sedimentology to analyzing a Superfund site in hydrogeology. The geology department is also committed to instructing all our majors in how to organize and communicate the results of their research. Students are required to complete a course in geology Information Literacy and a geology seminar course. The information literacy course instructs the students in how to search for articles, introduces common graphing and computing software and demonstrates how to design and produce a research poster. In seminar, the entire geology faculty participate and instruct and mentor the students as they prepare a research paper and professional talk. In conclusion, we have created a supportive undergraduate research atmosphere at GVSU by acquiring funding for their research, by training our students in how to conduct and present their research, and, perhaps most importantly, by celebrating their accomplishments.

Riemersma, P.; Mekik, F. A.

2003-12-01

381

For how long will the current grand maximum of solar activity persist?  

NASA Astrophysics Data System (ADS)

Understanding the Sun's magnetic activity is important because of its impact on the Earth's environment. The sunspot record since 1610 shows irregular 11-year cycles of activity; they are modulated on longer timescales and were interrupted by the Maunder minimum in the 17th century. Future behavior cannot easily be predicted - even in the short-term. Recent activity has been abnormally high for at least 8 cycles: is this grand maximum likely to terminate soon or even to be followed by another (Maunder-like) grand minimum? To answer these questions we use, as a measure of the Sun's open magnetic field, a composite record of the solar modulation function ?, reconstructed principally from the proxy record of cosmogenic 10Be abundances in the GRIP icecore from Greenland. This ? record extends back for almost 10,000 years, showing many grand maxima and grand minima (defined as intervals when ? is within the top or bottom 20% of a Gaussian distribution). We carry out a statistical analysis of this record and calculate the life expectancy of the current grand maximum. We find that it is only expected to last for a further 15-36 years, with the more reliable methods yielding shorter expectancies, and we therefore predict a decline in solar activity within the next two or three cycles. We are not able, however, to predict the level of the ensuing minimum.

Abreu, J. A.; Beer, J.; Steinhilber, F.; Tobias, S. M.; Weiss, N. O.

2008-10-01

382

Grande Ronde Endemic Spring Chinook Salmon Supplementation Program: Facility Operation and Maintenance and Monitoring and Evaluation, 1999 Annual Report  

Microsoft Academic Search

This is the second annual report of a multi-year, multi-agency project to restore spring chinook salmon populations in the Grande Ronde River Basin (Grande Ronde Endemic Chinook Salmon Program--GRESCP). The Confederated Tribes of the Umatilla Indian Reservation (CTUIR) operates adult collection and juvenile acclimation facilities on Catherine Creek and the upper Grande Ronde River for Snake River spring chinook salmon.

Stephen J. Boe; Peter T. Lofy

2002-01-01

383

Addressing the Grand Challenge of atmospheric carbon dioxide: geologic sequestration vs. biological recycling  

PubMed Central

On February 15, 2008, the National Academy of Engineering unveiled their list of 14 Grand Challenges for Engineering. Building off of tremendous advancements in the past century, these challenges were selected for their role in assuring a sustainable existence for the rapidly increasing global community. It is no accident that the first five Challenges on the list involve the development of sustainable energy sources and management of environmental resources. While the focus of this review is to address the single Grand Challenge of "develop carbon sequestration methods", is will soon be clear that several other Challenges are intrinsically tied to it through the principles of sustainability. How does the realm of biological engineering play a role in addressing these Grand Challenges? PMID:22047501

2011-01-01

384

Vegetation and substrate properties of aeolian dune fields in the Colorado River corridor, Grand Canyon, Arizona  

USGS Publications Warehouse

This report summarizes vegetation and substrate properties of aeolian landscapes in the Colorado River corridor through Grand Canyon, Arizona, in Grand Canyon National Park. Characterizing these parameters provides a basis from which to assess future changes in this ecosystem, including the spread of nonnative plant species. Differences are apparent between aeolian dune fields that are downwind of where modern controlled flooding deposits new sandbars (modern-fluvial-sourced dune fields) and those that have received little or no new windblown sand since river regulation began in the 1960s (relict-fluvial-sourced dune fields). The most substantial difference between modern- and relict-fluvial-sourced aeolian dune fields is the greater abundance of biologic soil crust in relict dune fields. These findings can be used with similar investigations in other geomorphic settings in Grand Canyon and elsewhere in the Colorado River corridor to evaluate the health of the Colorado River ecosystem over time.

Draut, Amy E.

2011-01-01

385

Investigation of rifting processes in the Rio Grande Rift using data from unusually large earthquake swarms  

SciTech Connect

San Acacia Swarm in the Rio Grande Rift. Because the Rio Grande rift is one of the best seismically instrumented rift zones in the world, studying its seismicity provides an exceptional opportunity to explore the active tectonic processes within continental rifts. We have been studying earthquake swarms recorded near Socorro in an effort to link seismicity directly to the rifting process. For FY94, our research has focused on the San Acacia swarm, which occurred 25 km north of Socorro, New Mexico, along the accommodation zone between the Albuquerque-Belen and Socorro basins of the central Rio Grande rift. The swarm commenced on 25 February 1983, had a magnitude 4.2 main shock on 2 March and ended on 17 March, 1983.

Sanford, A.; Balch, R. [New Mexico Inst. of Mining and Technology, Socorro, NM (United States); House, L.; Hartse, H. [Los Alamos National Lab., NM (United States)

1995-12-01

386

Specific heat and bimodality in canonical and grand canonical versions of the thermodynamic model  

E-print Network

We address two issues in the thermodynamic model for nuclear disassembly. Surprisingly large differences in results for specific heat were seen in predictions from the canonical and grand canonical ensembles when the nuclear system passes from liquid-gas co-existence to the pure gas phase. We are able to pinpoint and understand the reasons for such and other discrepancies when they appear. There is a subtle but important difference in the physics addressed in the two models. In particular if we reformulate the parameters in the canonical model to better approximate the physics addressed in the grand canonical model, calculations for observables converge. Next we turn to the issue of bimodality in the probability distribution of the largest fragment in both canonical and grand canonical ensembles. We demonstrate that this distribution is very closely related to average multiplicities. The relationship of the bimodal distribution to phase transition is discussed.

G. Chaudhuri; S. Das Gupta

2007-08-26

387

Age and diet of fossil California condors in Grand Canyon, Arizona  

SciTech Connect

A dozen new radiocarbon dates, together with a thorough review of its fossil distribution, shed new light on the time and probable cause of extinction of the California condor, Gymnogyps californianus, in Grand Canyon, Arizona. The radiocarbon data indicate that this species became extinct in Grand Canyon, and other parts of the inland West, more than 10,000 years ago in coincidence with the extinction of megafauna (proboscidians, edentates, perissodactyls). That condors relied on the megafauna for food is suggested by the recovery of food bones from a late Pleistocene nest cave in Grand Canyon. These fossil data have relevance to proposed release and recovery programs of the present endangered population of California condors. 19 references, 1 figure, 2 tables.

Emslie, S.D.

1987-08-14

388

Grande Ronde Endemic Spring Chinook Salmon Supplementation Program : Facility Operation and Maintenance Facilities, Annual Report 2003.  

SciTech Connect

Anadromous salmonid stocks have declined in both the Grande Ronde River Basin (Lower Snake River Compensation Plan (LSRCP) Status Review Symposium 1998) and in the entire Snake River Basin (Nehlsen et al. 1991), many to the point of extinction. The Grande Ronde River Basin historically supported large populations of fall and spring chinook (Oncorhynchus tshawytscha), sockeye (O. nerka), and coho (O. kisutch) salmon and steelhead trout (O. mykiss) (Nehlsen et al. 1991). The decline of chinook salmon and steelhead populations and extirpation of coho and sockeye salmon in the Grande Ronde River Basin was, in part, a result of construction and operation of hydroelectric facilities, over fishing, and loss and degradation of critical spawning and rearing habitat in the Columbia and Snake River basins (Nehlsen et al. 1991). Hatcheries were built in Oregon, Washington and Idaho under the Lower Snake River Compensation Plan (LSRCP) to compensate for losses of anadromous salmonids due to the construction and operation of the lower four Snake River dams. Lookingglass Hatchery (LGH) on Lookingglass Creek, a tributary of the Grande Ronde River, was completed under LSRCP in 1982 and has served as the main incubation and rearing site for chinook salmon programs for Grande Ronde and Imnaha rivers in Oregon. Despite these hatchery programs, natural spring chinook populations continued to decline resulting in the National Marine Fisheries Service (NMFS) listing Snake River spring/summer chinook salmon as ''threatened'' under the federal Endangered Species Act (1973) on 22 April 1992. Continuing poor escapement levels and declining population trends indicated that Grande Ronde River basin spring chinook salmon were in imminent danger of extinction. These continuing trends led fisheries co-managers in the basin to initiate the Grande Ronde Endemic Spring Chinook Salmon Supplementation Program (GRESCSSP) in order to prevent extinction and preserve options for use of endemic fish stocks in future artificial propagation programs. The GRESCSSP was implemented in three Grande Ronde River basin tributaries; the Lostine and upper Grande Ronde rivers and Catherine Creek. The GRESCSSP employs two broodstock strategies utilizing captive and conventional brood sources. The captive brood program began in 1995, with the collection of parr from the three tributary areas. The conventional broodstock component of the program began in 1997 with the collection of natural adults returning to these tributary areas. Although LGH was available as the primary production facility for spring chinook programs in the Grande Ronde Basin, there were never any adult or juvenile satellite facilities developed in the tributary areas that were to be supplemented. An essential part of the GRESCSSP was the construction of adult traps and juvenile acclimation facilities in these tributary areas. Weirs were installed in 1997 for the collection of adult broodstock for the conventional component of the program. Juvenile facilities were built in 2000 for acclimation of the smolts produced by the captive and conventional broodstock programs and as release sites within the natural production areas of their natal streams. The Confederated Tribes of the Umatilla Indian Reservation (CTUIR) operate both the juvenile acclimation and adult trapping facilities located on Catherine Creek and the upper Grande Ronde River under this project. The Nez Perce Tribe (NPT) operate the facilities on the Lostine River under a sister project. Hatcheries were also built in Oregon, Washington and Idaho under the LSRCP to compensate for losses of summer steelhead due to the construction and operation of the lowest four Snake River dams. Despite these harvest-driven hatchery programs, natural summer steelhead populations continued to decline as evidenced by declining counts at Lower Granite Dam since 1995 (Columbia River Data Access in Real Time, DART) and low steelhead redd counts on index streams in the Grande Ronde Basin. Because of low escapement the Snake River summer steelhead were listed as threat

McLean, Michael L.; Seeger, Ryan; Hewitt, Laurie (Confederated Tribes of the Umatilla Indian Reservation, Department of Natural Resources, Pendleton, OR)

2004-01-01

389

A Miocene river in northern Arizona and its implications for the Colorado River and Grand Canyon  

USGS Publications Warehouse

The southwesterly course of the prelate Miocene Crooked Ridge River can be traced continuously for 48 km and discontinuously for 91 km in northern Arizona. It is visible today in inverted relief. Pebbles in the river gravel came from at least as far northeast as the San Juan Mountains. The river valley was carved out of easily eroded Jurassic and Cretaceous rocks, whose debris overloaded the river with abundant detritus, possibly steepening the gradient. After the river became inactive, the regional drainage network was rearranged twice, and the Four Corners region was lowered by erosion 12 km. The river provides constraints on the history of the Colorado River and Grand Canyon; its continuation into lakes in Arizona or Utah is unlikely, as is integration of the Colorado River through Grand Canyon by lake spillover. The downstream course of the river was probably across the Kaibab Arch in a valley roughly coincident with the present eastern Grand Canyon.

Lucchitta, I.; Holm, R.F.; Lucchitta, B.K.

2011-01-01

390

Modelling grand minima of solar activity using a flux transport dynamo model  

NASA Astrophysics Data System (ADS)

The occurrence of grand minima like the Maunder minimum is an intriguing aspect of the sunspot cycle. We use the flux transport dynamo model to explain the grand minima, showing that they arise when either the poloidal field or the meridional circulation falls to a sufficiently low value due to fluctuations. Assuming these fluctuations to be Gaussian and determining the various parameters from the data of the last 28 cycles, we carry on a dynamo simulation with both these fluctuations. The results are remarkably close to the observational data.

Karak, Bidya Binay; Choudhuri, Arnab Rai

2013-07-01

391

Full canonical information from grand-potential density-functional theory.  

PubMed

We present a general and formally exact method to obtain the canonical one-body density distribution and the canonical free energy from direct decomposition of classical density functional results in the grand ensemble. We test the method for confined one-dimensional hard-core particles for which the exact grand potential density functional is explicitly known. The results agree to within high accuracy with those from exact methods and our MonteCarlo many-body simulations. The method is relevant for treating finite systems and for dynamical density functional theory. PMID:25526169

de Las Heras, Daniel; Schmidt, Matthias

2014-12-01

392

Wildlife Mitigation and Restoration for Grand Coulee Dam: Blue Creek Project, Phase 1.  

SciTech Connect

This report is a recommendation from the Spokane Tribe to the Northwest Power Planning Council (NPPC) for partial mitigation for the extensive wildlife and wildlife habitat losses on the Spokane Indian Reservation caused by the construction of Grand Coulee Dam. NPPC`s interim wildlife goal over the next 7 years for the Columbia hydropower system, is to protect, mitigate and enhance approximately 35% basin wide of the lost habitat units. Grand Coulee Dam had the greatest habitat losses of any Dams of the Wildlife Rule.

Merker, Christopher

1993-04-01

393

Male Rio Grande Turkey Survival and Movements in the Texas Panhandle and Southwestern Kansas  

Microsoft Academic Search

Abstract Wildlife managers,depend,on accurate,information,regarding,wild turkey,(Meleagris,gallopavo) survival patterns,to properly,manage,turkey populations.,Survival patterns,of male,Rio Grande,wild turkeys,(M. g. intermedia) have,not been,studied,intensively. Wildlife managers,in the Texas Panhandle, USA, and southwestern Kansas, USA, suspected that turkey populations were declining. From January 2000 through August 2002, we studied survival and movement of 107 juvenile male and 115 adult male radiomarked Rio Grande wild turkeys on 4 study

DERRICK P. HOLDSTOCK; MARK C. WALLACE; WARREN B. BALLARD; JOHN H. BRUNJES; RICHARD S. PHILLIPS; BRIAN L. SPEARS; STEPHEN J. DEMASO; JACK D. JERNIGAN; ROGER D. APPLEGATE; PHILLIP S. GIPSON

2006-01-01

394

Union County - La Grande, Oregon geothermal district heating: feasibility assessment. Final report  

SciTech Connect

This report presents an assessment of geothermal district heating in the City of La Grande, Oregon. Eight study area districts were analyzed to determine their economic feasibility. Results from the analyses conclude that certain districts within the City of La Grande are economically feasible if certain assumptions are correct. Development of geothermal district heating for these areas would provide direct energy and dollar savings to the building owners and would also provide direct and indirect benefits to low and moderate income households within the City.

Jenkins, H. II; Giddings, M.; Hanson, P.

1982-09-01

395

A section of the Paleozoic formations of the Grand Canyon at the Bass trail  

USGS Publications Warehouse

The thick series of horizontal strata of Paleozoic age which makes the greater part of the wall of the Grand Canyon is probably broadly familiar to more people than the strata exposed in any other area in the western United States. Each detail of form or color in the wall is so definitely associated with a bed or set of beds in the series that these strata are the very elements of the canyon landscape. Consequently they have been described not only by geologists but by many writers who have been interested in the Grand Canyon chiefly as a scenic spectacle.

Noble, L.F.

1923-01-01

396

Frequency and initiation of debris flows in Grand Canyon, Arizona Peter G. Griffiths and Robert H. Webb  

E-print Network

Frequency and initiation of debris flows in Grand Canyon, Arizona Peter G. Griffiths and Robert H 2004. [1] Debris flows from 740 tributaries transport sediment into the Colorado River in Grand Canyon, Arizona, creating rapids that control its longitudinal profile. Debris flows mostly occur when runoff

397

Archeomagnetism of potsherds from Grand Banks, Ontario: a test of low paleointensities in Ontario around A.D. 1000  

E-print Network

Archeomagnetism of potsherds from Grand Banks, Ontario: a test of low paleointensities in Ontario from Grand Banks, southern Ontario. 14 C dating on maize found in the same pit as the potsherds gives is in agreement with the low virtual axial dipole moment values given by studies on material from Ontario compared

Dunlop, David J.

398

Publihed in Proceedings of Engineering Human Computer Interaction, EHCI'95, Grand Targhee, USA, August 1995, Chapman&Hall Publ.  

E-print Network

Publihed in Proceedings of Engineering Human Computer Interaction, EHCI'95, Grand Targhee, USA Components Analysis #12; Publihed in Proceedings of Engineering Human Computer Interaction, EHCI'95, Grand, France email: coutaz@imag.fr Abstract Computer vision provides a powerful tool for the interaction

Nigay, Laurence

399

Acute toxicity of Rodeo herbicide to Rio Grande silvery minnow as estimated by surrogate species: Plains minnow and fathead minnow  

Microsoft Academic Search

Use of Rodeo herbicide (53.8% glyphosate, active ingredient) to control vegetation in or along irrigation canals in the Rio Grande basin in New Mexico has become a concern because of potential for populations of a federally endangered species, the Rio Grande silvery minnow (Hybognathus amarus), to be exposed. To investigate the potential for adverse effects, toxicity of Rodeo herbicide was

D. W. Beyers

1995-01-01

400

CHANGES IN LAND USE PATTERNS AND THEIR EFFECTS ON RIO GRANDE TURKEYS IN THE ROLLING PLAINS OF TEXAS AND  

E-print Network

1 CHANGES IN LAND USE PATTERNS AND THEIR EFFECTS ON RIO GRANDE TURKEYS IN THE ROLLING PLAINS;2 Executive Summary In January 2000 we initiated a study of Rio Grande turkeys to determine population dynamics and the effects of land use practices and precipitation on turkey population dynamics. Design

401

Demographics and Chronology of a Spawning Aggregation of Blue Sucker (Cycleptus elongatus) in the Grand River, Missouri, USA  

Microsoft Academic Search

The blue sucker (Cycleptus elongatus) was sampled as individuals arrived, spawned, and departed from a spawning rime in the Grand River of northcentral Missouri, USA. The Grand River basin was not known to support blue sucker reproduction with few individuals ever recorded. The spawning site is unique in character for the lower river. Individuals began arriving in early April when

Jason C. Vokoun; Travis L. Guerrant; Charles F. Rabeni

2003-01-01

402

The role of feedback mechanisms in historic channel changes of the lower Rio Grande in the Big Bend region  

Microsoft Academic Search

Over the last century, large-scale water development of the upper Rio Grande in the U.S. and Mexico, and of the Rio Conchos in Mexico, has resulted in progressive channel narrowing of the lower Rio Grande in the Big Bend region. We used methods operating at multiple spatial and temporal scales to analyze the rate, magnitude, and processes responsible for channel

David J. Dean; John C. Schmidt

2011-01-01

403

Competing Interests and Concerns in the Rio Grande Basin: Mountain Hydrology, Desert Ecology, Climate Change, and Population Growth  

Microsoft Academic Search

In the mountainous American Southwest, the Rio Grande basin is a prime example of how conflicts, misconceptions, and competition regarding water can arise in arid and semi-arid catchments. Much of the Rio Grande runoff originates from snow fields in the San Juan Mountains of southern Colorado and the Sangre De Cristo Mountains of northern New Mexico, far from population centers.

A. Rango

2004-01-01

404

Effects of Jackson Lake Dam on the Snake River and its floodplain, Grand Teton National Park, Wyoming, USA  

E-print Network

Effects of Jackson Lake Dam on the Snake River and its floodplain, Grand Teton National Park In 1906, the Bureau of Reclamation created Jackson Lake Dam on the Snake River in what later became Grand of floods. The stability of the Snake River exhibited a complex response to the change in flow regime. Close

Marston, Richard A.

405

DAM IMPACTS ON AND RESTORATION OF AN ALLUVIAL RIVER - RIO GRANDE, NEW MEXICO  

Microsoft Academic Search

The impact of construction of dams and reservoirs on alluvial rivers extends both upstream and downstream of the dam. Downstream of dams, both the water and sediment supplies can be altered leading to adjustments in the river channel geometry and ensuing changes in riparian and aquatic habitats. The wealth of pre and post-regulation data on the Middle Rio Grande, New

Gigi RICHARD; Pierre JULIEN

2004-01-01

406

Grande Ronde Basin Chinook Salmon Captive Brood and Conventional Supplementation Programs, 1998 Annual Report.  

SciTech Connect

Permit Number 1011 (formerly Permit No. 973) authorized ODFW to take listed spring chinook salmon juveniles from Catherine Creek and the Lostine and Grande Ronde rivers for scientific research and enhancement purposes. Special condition 2a specified the need for an annual report prior to initiation of next years work.

Carmichael, Richard W. (Oregon Department of Fish and Wildlife, La Grande, OR)

2003-03-01

407

Wildland fire effects on forest structure over an altitudinal gradient, Grand Canyon National Park, USA  

Microsoft Academic Search

Summary 1. Restoration of wildland fire to forests is a challenge when historical fire regimes have been altered. We studied four fires that burned over approximately 7865 ha on an altitudinal gradient in Grand Canyon National Park, USA, in 2003. The fires met criteria for the current USA policy allowing the restoration of fire's ecological role in forest landscapes: Wildland

PETER Z. FUL; DANIEL C. LAUGHLIN

408

Trout Piscivory in the Colorado River, Grand Canyon: Effects of Turbidity, Temperature, and Fish Prey Availability  

Microsoft Academic Search

Introductions of nonnative salmonids, such as rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta, have affected native fishes worldwide in unforeseen and undesirable ways. Predation and other interactions with nonnative rainbow trout and brown trout have been hypothesized as contributing to the decline of native fishes (including the endangered humpback chub Gila cypha) in the Colorado River, Grand Canyon.

Michael D. Yard; Lewis G. Coggins Jr; Colden V. Baxter; Glenn E. Bennett; Josh Korman

2011-01-01

409

The Cerro Grande Fire - From Wildfire Modeling Through the Fire Aftermath  

SciTech Connect

The Cerro Grande Fire developed from a prescribed burn by the National Park Service at Bandelier National Monument near Los Alamos, New Mexico. When the burn went out of control and became a wildfire, it attracted worldwide attention because it threatened the birthplace of the atomic bomb, Los Alamos National Laboratory (LANL). Was LANL prepared for a fire? What lessons have been learned?

Rudell, T. M. (Theresa M.); Gille, R. W. (Roland W.)

2001-01-01

410

The Cerro Grande Fire - From Wildlife Modeling Through the Fire Aftermath  

SciTech Connect

The Cerro Grande Fire developed from a prescribed burn by the National Park Service at Bandelier National Monument near Los Alamos, New Mexico. When the burn went out of control and became a wildfire, it attracted worldwide attention because it threatened the birthplace of the atomic bomb, Los Alamos National Laboratory (LANL). Was LANL prepared for a fire? What lessons have been learned?

Rudell, T. M. (Theresa M.); Gille, R. W. (Roland W.)

2001-01-01

411

Bounds on the fermions and Higgs boson masses in grand unified theories  

Microsoft Academic Search

In the framework of grand unifying theories, the requirement that no interaction becomes strong and no vacuum instability develops up to the unification energy is shown to imply upper bounds to the fermion masses as well as upper and lower bounds to the Higgs boson mass. These bounds are studied in detail for the case of the unifying groups SU(5)

Nicola Cabibbo; Luciano Maiani; G. Parisi; Roberto Petronzio

1979-01-01

412

XVIII. TEST HOLES IN THE VALLE TOLEDO AND VALLE GRANDE (1948)  

E-print Network

, gravel, with some clay lenses, all volcanic rock, containing much pumice 350 361 Note: The whole section and pumice 130 140 7. Test Hole 7 Location: Valle Grande Depth: 40 ft Depth to water: 5.5 ft (6-29-48); 6

413

2013-2014 Global Public Health Grand Rounds Presentations DATE TOPIC SPEAKER  

E-print Network

2013-2014 Global Public Health Grand Rounds Presentations DATE TOPIC SPEAKER Tuesday September 10, 2013 5:30 p.m. - 6:30 p.m. "The Office of Global Public Health: 2013- 2014 Update and Vision" Scott Benson, MD, MPH, PhD Director, Office of Global Public Health Assistant Professor, Division of Public

Feschotte, Cedric

414

78 FR 60273 - Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild, Grand County...  

Federal Register 2010, 2011, 2012, 2013, 2014

...planned development and proximity to sage grouse leks. Alternative D (Option 1) is the...impacts to the last known active sage grouse lek in eastern Grand County and avoids...existing ROW and further from the sage grouse lek, and requesting that Western...

2013-10-01

415

Soil Erosion Calculation using Remote Sensing and GIS in Ro Grande de Arecibo Watershed, Puerto Rico  

E-print Network

Soil Erosion Calculation using Remote Sensing and GIS in Río Grande de Arecibo Watershed, Puerto potentials in the watershed where exist major erosion and to establishment a program to watershed management. Soil erosion assessment is a capital-intensive and time-consuming exercise. A number of parametric

Gilbes, Fernando

416

Geology of Grand Teton National Park, Wyoming, U.S.A.  

NSDL National Science Digital Library

This site presents an overview of the general geology, the structure, and the glaciation of the Teton Range in Grand Teton National Park, Wyoming U.S.A. Examples of cirques, glacial horns, terraces and glacial outwash plains are presented. A link to a personal account of an Avalanche Canyon loop hike is also available.

417

A Confluence of Community: Gathering the Waters of the Rio Grande.  

ERIC Educational Resources Information Center

A Gathering of Waters is a community-based art and activism project to raise awareness that the Rio Grande/Rio Bravo is a desperately endangered river, connect communities dependent on the river, and galvanize those communities into action. Activities provided actual and symbolic experiences of river water for American Indian, Hispanic, Anglo, and

Smith, Craig

2001-01-01

418

Application for the MSU East Lansing-Grand Rapids MSU CHM "Neuroscience Program Road Fellowship"  

E-print Network

Application for the MSU East Lansing-Grand Rapids MSU CHM "Neuroscience Program Road Fellowship" The purpose of the MSU Neuroscience Program (NSP) Road Fellowship is to defray costs for MSU NSP graduate circumstances you are eligible to receive the NSP Road Fellowship: o I am a 1st year MSU NSP graduate student

Liu, Taosheng

419

Prelaying exodus of Cory's Shearwaters ( Calonectris diomedea borealis ) on Selvagem Grande  

Microsoft Academic Search

Summary We stayed on the Portugese island of Selvagem Grande, 30 N 16 W, 300 km south of Madeira and 200 km north of Tenerife, from 9 May to 3 June 1991 in order to study the prelaying exodus in Cory's Shearwaters (Calonectris diomedea borealis) and its connection with the colony attendance cycles described earlier. Laying took place on 1.5

Christian Jouanin; Francis Roux; Jean-Louis Mougin I; Jean-Claude Stahl

2001-01-01

420

A Comparison of the Teaching of Chemistry in French Grandes Ecoles and British Universities.  

ERIC Educational Resources Information Center

A comparison of chemistry teaching in French "Grandes Ecoles" and British universities focuses on entry requirements, course structure and content, teaching methods, assessment, and relationship to industry. Ways in which each country can benefit from the other's practices are outlined. A breakdown of program hours in selected institutions is

Sutcliffe, H.

1982-01-01

421

Data Mining: Data Analysis on a Grand Scale? \\Lambda Padhraic Smyth  

E-print Network

Data Mining: Data Analysis on a Grand Scale? \\Lambda Padhraic Smyth Information and Computer data mining has evolved largely as a result of efforts by computer scientists to address the needs of this historical context, data mining to date has largely focused on computational and algorithmic issues rather

Smyth, Padhraic

422

La Fisica come Informazione: l'universo `e un grande automa quantistico  

E-print Network

La Fisica come Informazione: l'universo `e un grande automa quantistico Giacomo Mauro D'Ariano 26. Dipartimento di Fisica "A. Volta", via Bassi 6, I-27100 Pavia, Italy, http://www.qubit.it 1 #12;quantization teoria pi`u fondamentale, assegnata in ter- mini di un automa cellulare quantistico (QCA). La fisica

D'Ariano, Giacomo Mauro

423

77 FR 13516 - Safety Zone; Antique Boat Show, Niagara River, Grand Island, NY  

Federal Register 2010, 2011, 2012, 2013, 2014

...The Captain of the Port Buffalo has determined that hydroplane...zone will encompass all waters of Niagara River, Grand...the Captain of the Port Buffalo or his on-scene representative...zone will encompass all waters of the Niagara River...the Captain of the Port Buffalo or his designated...

2012-03-07

424

77 FR 49730 - Safety Zone; Antique Boat Show, Niagara River, Grand Island, NY  

Federal Register 2010, 2011, 2012, 2013, 2014

...The Captain of the Port Buffalo has determined that hydroplane...zone will encompass all waters of Niagara River, Grand...the Captain of the Port Buffalo or his on-scene representative...zone will encompass all waters of the Niagara River...the Captain of the Port Buffalo or his designated...

2012-08-17

425

MOVEMENTS, SURVIVAL, AND REPRODUCTION OF RIO GRANDE WILD TURKEYS IN THE TEXAS PANHANDLE  

E-print Network

MOVEMENTS, SURVIVAL, AND REPRODUCTION OF RIO GRANDE WILD TURKEYS IN THE TEXAS PANHANDLE by RICHARD wild turkeys (Meleagris gallopava intermedia) (n = 554) were captured and outfitted with backpack monitored turkeys exhibited winter range fidelity. Birds exhibiting winter range fidelity were classified

426

"An Evaluation of Road-based Distance Sampling of Rio Grande Wild Turkeys in Texas"  

E-print Network

"An Evaluation of Road-based Distance Sampling of Rio Grande Wild Turkeys in Texas" Texas Tech and it has proven accurate in estimating turkey density in the southern rolling plains of Texas for the observer to stay alert at all times For accurate density estimates, all turkeys near the transect must

427

Systems for Safety and Autonomous Behavior in Cars: The DARPA Grand Challenge Experience  

Microsoft Academic Search

In this paper, we review technologies for autonomous ground vehicles and their present capabilities in research and in the automotive market. We outline technology requirements for enhanced functions and for infrastructure development. Since the recent Grand Challenge competition is a major force to advance technology in this field, we specifically refer to our experiences in developing a participating vehicle. We

Umit Ozguner; Christoph Stiller; Keith Redmill

2007-01-01

428

Ohio State University at the 2004 DARPA Grand Challenge: Developing a Completely Autonomous Vehicle  

Microsoft Academic Search

The DARPA Grand Challenge is a field test designed to accelerate R&D in autonomous ground vehicles that save lives on the future battlefield. At Ohio State University, we have extensive experience in developing autonomous ground vehicles. Our goal was to create a completely autonomous vehicle that could negotiate most of the GC 04 route and perhaps even finish the race.

Qi Chen; mit zgner; Keith Redmill

2004-01-01

429

Grande Ronde Endemic Spring Chinook Salmon Supplementation Program: Monitoring and Evaluation, 2002 Annual Report  

Microsoft Academic Search

This is the fifth annual report of a multi-year project to operate adult collection and juvenile acclimation facilities on Catherine Creek and the upper Grande Ronde River for Snake River spring chinook salmon. These two streams have historically supported populations that provided significant tribal and non-tribal fisheries. Conventional and captive broodstock supplementation techniques are being used to restore spring chinook

Stephen J. Boe; Rey F. Weldert; Carrie A. Crump

2003-01-01

430

Constraints and opportunities for ecological restoration in the Rio Grande Valley, Texas  

Technology Transfer Automated Retrieval System (TEKTRAN)

There are few areas in the United States that have experienced a more precipitous growth than the Lower Rio Grande Valley (RGV) in south Texas, where human populations have almost doubled in the last 20 years. This growth is matched with a rapid proliferation of built environments that is often asso...

431

Estimating water use by giant reed along the Rio Grande River using a large aperture scintillometer  

Technology Transfer Automated Retrieval System (TEKTRAN)

Giant reed (Arundo donax L.) is a bamboo-like perennial invasive weed from Eurasia presenting a severe threat to agroecosystems and riparian areas in Texas and Mexican portions of the Rio Grande River Basin. It is known to consume excessive amounts of water to support its rapid vegetative growth rat...

432

Water Supply Problems and Solutions in the Grand Prairie Region of Arkansas  

Technology Transfer Automated Retrieval System (TEKTRAN)

Rice has been produced in Arkansas' Grand Prairie, an area in the east-central portion of the state situated between the White and Arkansas Rivers with more than 100,000 tilled ha, at least as far back as 1905. By 1915 the Alluvial Aquifer, the principal water source for agriculture in eastern Arkan...

433

Grand canonical Monte Carlo simulation study of capillary condensation between nanoparticles  

Microsoft Academic Search

Capillary condensation at the nanoscale differs from condensation in the bulk phase, because it is a strong function of surface geometry and gas-surface interactions. Here, the effects of geometry on the thermodynamics of capillary condensation at the neck region between nanoparticles are investigated via a grand canonical Monte Carlo simulation using a two-dimensional lattice gas model. The microscopic details of

Seonmin Kim; Sheryl H. Ehrman

2007-01-01

434

Soil N cycling and phenols accumulation under continuous rice cropping in the Grand Prairie region, Arkansas  

Technology Transfer Automated Retrieval System (TEKTRAN)

Soil C stocks in the Grand Prairie region of eastern Arkansas have declined under the prevalent two-year rotation of rice (Orzya sativa L.) soybean (Glycine max (L.) Merr.). Continuous rice cropping could promote soil C sequestration, but in previous work continuous rice averaged 19% less grain yiel...

435

Postglacial vegetation and climate of Grand Teton and southern Yellowstone National Parks  

Microsoft Academic Search

Pollen records from northern Grand Teton National Park, the Pinyon Peak Highlands, and southern Yellowstone National Park were examined to study the pattern of reforestation and climatic change following late-Pinedale Glaciation. Analyses of associated plant macrofossils and the modern pollen rain of the region as well as radiocarbon-age determinations and tephrochronology were done. Alpine meadow communities, with Betula and Juniperus,

1993-01-01

436

RESEARCH PERSPECTIVE Grand Challenge Competition to Predict In Vivo Knee Loads  

E-print Network

: musculoskeletal model validation; total knee arthroplasty; instrumented implant; gait; biomechanics Doctors haveRESEARCH PERSPECTIVE Grand Challenge Competition to Predict In Vivo Knee Loads Benjamin J. Fregly,1 Competition to Predict In Vivo Knee Loads'' based on a series of comprehensive publicly available in vivo data

Delp, Scott

437

Grande Ronde Basin Chinook Salmon Captive Brood and Conventional Supplementation Programs, 1999 Annual Report.  

SciTech Connect

Permit Number 1011 (formerly Permit No. 973) authorized ODFW to take listed spring chinook salmon juveniles from Catherine Creek and the Lostine and Grande Ronde rivers for scientific research and enhancement purposes. Special condition 2a specified the need for an annual report prior to initiation of next year's work.

Carmichael, Richard W. (Oregon Department of Fish And Wildlife, La Grande, OR)

2003-03-01

438

Cardiovascular Medicine Grand Rounds/Case Conference (Tue 8-9 am)  

E-print Network

Cardiovascular Medicine Grand Rounds/Case Conference (Tue 8-9 am) Cardiovascular Research, Yale Cardiovascular Medicine Clinical Fellow 8-9 am "Sticky Platelets vs. Bad Plasma: A Case of Stent Thrombosis" Tue Sep 21 Pravien Khanna, MD, Yale Cardiovascular Medicine Clinical Fellow 8-9 am "Percutaneous

439

Using Grand Challenges For Innovative Teaching in Structural Geology, Geophysics, and Tectonics  

NASA Astrophysics Data System (ADS)

An innovative approach to teaching involves using the "Big Ideas" or "Grand Challenges" of a field, as determined by the research community in that area, as the basis for classroom activities. There have been several recent efforts in the areas of structural geology, tectonics, and geophysics to determine these Grand Challenges, including the areas of seismology ("Seismological Grand Challenges in Understanding Earth's Dynamic Systems"), mineral physics ("Unlocking the Building Blocks of the Planet"), EarthScope-related science ("Unlocking the Secrets of the North American Continent: An EarthScope Science Plan for 2010-2020"), and structural geology and tectonics (at the Structural Geology and Tectonics Forum held at Williams College in June, 2012). These research community efforts produced frameworks of the essential information for their fields with the aim of guiding future research. An integral part of this, however, is training the next generation of scientists, and using these Big Ideas as the basis for course structures and activities is a powerful way to make this happen. When activities, labs, and homeworks are drawn from relevant and cutting-edge research topics, students can find the material more fascinating and engaging, and can develop a better sense of the dynamic process of scientific discovery. Many creative ideas for incorporating the Grand Challenges of structural geology, tectonics, and geophysics in the classroom were developed at a Cutting Edge workshop on "Teaching Structural Geology, Geophysics, and Tectonics in the 21st Century" held at the University of Tennessee in July, 2012.

McDaris, J. R.; Tewksbury, B. J.; Wysession, M. E.

2012-12-01

440

Governing Characteristics for 820,000 Horsepower Units for Grand Coulee Third Powerplant  

Microsoft Academic Search

In selecting parameters for large hydropower generating units such as those for the Grand Coulee Third Powerplant, control characteristics to satisfy power system needs can strongly influence economics of the design. The needs for abnormal mechanical inertia and expensive reduction of the penstock water starting time are shown to be mitigated by refinement of governor characteristics. This paper describes selection

F. R. Schleif; C. G. Bates

1971-01-01

441

Cytogenetics of genetic counseling patients in Pelotas, Rio Grande do Sul, Brazil  

Microsoft Academic Search

From 1986 to 2002, we examined the chromosomal com- position of 916 patients attended by two genetic counseling services in the city of Pelotas, in the Brazilian State of Rio Grande do Sul, to deter- mine the genetic causes of their disturbances. Patterns of G-banding using trypsin and Giemsa (GTG) and C-banding using barium and Giem- sa (CBG) were studied

A. C. Duarte; E. Cunha; J. M. Roth; F. L. S. Ferreira; G. L. Garcias

442

The Grand Junction Report: Issues of Equality in the Mesa Valley.  

ERIC Educational Resources Information Center

The Grand Junction Metropolitan Statistical Area is the fifth largest metropolitan area in Colorado and the 12th fastest-growing in the Southwest. Latinos make up approximately 8 percent of total population and 15 percent of school enrollment; these numbers are increased by migrant farmworkers and their families. In May 2001, a public forum was

Commission on Civil Rights, Washington, DC.

443

International Agriculture Fellowship: A Gates Foundation Grand Challenges Exploration in Endophytic Biological Control  

E-print Network

International Agriculture Fellowship: A Gates Foundation Grand Challenges Exploration in Endophytic Biological Control Who we are: The International Center for Tropical Agriculture (CIAT) is a member institute of the Consultative Group on International Agricultural Research (CIAR). Based in Cali, Colombia, we focus

Ferrara, Katherine W.

444

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS  

E-print Network

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS Wednesday, March 6, 2013 ­ 3:30 ­ 4:30PM UCI Medical Center ­ Radiology Conference Room (0117) "Screening Mammography at the Threshold for Recall" Edward A. Sickles, M.D., F.A.C.R. Professor Emeritus of Radiology

Mease, Kenneth D.

445

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS  

E-print Network

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS Wednesday, July 10, 2013 ­ 4:00 ­ 5:00PM UC Irvine Medical Center ­ Radiology Conference Room 0117 "f updated information on radiological science topics and research. Target Audience Attending physicians

Mease, Kenneth D.

446

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS  

E-print Network

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS Monday, April 8, 2013 ­ 4:00 ­ 5:00PM UCI Medical Center ­ Radiology Conference Room (0117) "Imaging of Intracranial Infections: Pearls and Pitfalls" Mark E. Mullins, M.D., Ph.D. Associate Professor of Radiology

Mease, Kenneth D.

447

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS  

E-print Network

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS Wednesday, May 15, 2013 ­ 4:00 ­ 5:00PM UC Irvine Medical Center ­ Radiology Conference Room (0117) "Bone Resnick, MD, FACR Professor of Radiology, University of California, San Diego School of Medicine Chief

Mease, Kenneth D.

448

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS  

E-print Network

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS Wednesday, November 14, 2012 ­ 4:00 ­ 5:00PM UCI Medical Center ­ Radiology Conference Room (0117) "Neuroimaging of Epilepsy" Noriko Salamon, MD, PhD Professor of Radiology, Director of Diagnostic Neuroradiology

Mease, Kenneth D.

449

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS  

E-print Network

Sponsored by the University of California, Irvine School of Medicine RADIOLOGY GRAND ROUNDS Wednesday, February 27, 2013 ­ 4:00 ­ 5:00PM UCI Medical Center ­ Radiology Conference Room (0117) "Neuroimaging of Epilepsy" Noriko Salamon, MD, PhD Professor of Radiology, Director of Diagnostic Neuroradiology

Mease, Kenneth D.

450

Preparing for a Day Hike at Grand Canyon: What Information Is Useful?  

Microsoft Academic Search

Most parks are interested in conveying hiking safety and minimum impact techniques to visitors. At Grand Canyon National Park, providing such information to more than 2000 day use hikers per day has been a longstanding concern whose effort has increased in intensity over the past decade. This study evaluates aspects of the \\

William Stewart; David Cole; Robert Manning; William Valliere; Jonathan Taylor; Martha Lee

2000-01-01

451

Sumo Grande: Seeding Activity to the High-end Tourist Market  

Microsoft Academic Search

Tata Motors has segmented, targeted and positioned selected products according to their features and brand equity in the market. Products such as the newly launched Indigo CS, Palio MultiJet, Safari Dicor, and Sumo Grande are thus positioned exclusively for sale in the high-end tourist market, that is, for fleet operations only. Bangalore being the IT hub in the country, possesses

Seshanna Sudarshan

2009-01-01

452

Grand Challenge in System Scaling Gap by 106 Materials for Next Frontier in Electronics  

E-print Network

with the invention of transistor in 1947, made electronics the largest single, $1.5T global industry, servingGrand Challenge in System Scaling Gap by 106 . Materials for Next Frontier in Electronics: Systems) leading-edge electronic and bio-electronic systems research, 2) cross-discipline education of students

Li, Mo

453

Essai de caractrisation phytocologique des for-mations herbaces ptures de Grande-Terre  

E-print Network

"savannas") in Grande-Terre (Guadeloupe) fig.1 -, 350 samples were taken. Sampling was stratified were noted for each sample. The results were interpreted by the ecological series method, which gives the average pasture value of the component samples, according to rough quality indices of species. A "pastoral

Paris-Sud XI, Université de

454

1980 Environmental monitoring report: US Department of Energy Facilities, Grand Junction, Colorado, and Monticello, Utah  

SciTech Connect

The effect the Grand Junction, Colorado and Monticello, Utah facilities have on the environment is reflected by the analyses of air, water, and sediment samples. The off-site water and sediment samples were taken to determine what effect the tailings and contaminated equipment buried on the sites may have on the air, water, and adjacent properties.

Not Available

1981-04-01

455

Adsorption characteristics of alkanes onto carbon nanotube bundles: Grand Canonical Monte Carlo simulation  

E-print Network

Adsorption characteristics of alkanes onto carbon nanotube bundles: Grand Canonical Monte Carlo The separation of alkanes is important for a range of applications such as oil refinement, filtration and gas alkane adsorption and separation. Rather than remaining isolated however, nanotubes tend to bundle

Maruyama, Shigeo

456

Structural control of the rapids and pools of the colorado river in the grand canyon.  

PubMed

Most of the major rapids along the 450-kilometer course of the Colorado River in the Grand Canyon are within fracture zones that run perpendicular to the river. Steep tributaries flowing within the zones of bedrock weakness move large debris to the Colorado, forming the rapids. Accelerated flow through the rapids scours the deep pools that are located below them. PMID:17754038

Dolan, R; Howard, A; Trimble, D

1978-11-10

457

Medicine Grand Rounds Jan 2006 June 2011 Page 1 of 7  

E-print Network

Disease: Adverse Effects of Modern Medicine Sanjay Kamboj, MD 12/3/10 The 4-H Club: HIV, HPV, HAARTMedicine Grand Rounds Jan 2006 ­ June 2011 Page 1 of 7 Date Title Author 06/24/11 CANCELLED 06: Evolution (Revolution) of Therapy-Aspirin to Biologicals Luis 05/27/11 New Approaches in the Treatment

458

Using Grand Challenges to Teach Science: A Biology-Geology Collaboration  

NASA Astrophysics Data System (ADS)

Three science courses at the University of Wyoming explore the inextricable connections between science and society by centering on grand challenges. Two of these courses are introductory integrated science courses for non-majors while the third is an upper level course for majors and non-majors. Through collaboration, the authors have developed these courses to explore the grand challenges of energy, water and climate. Each course focuses on the fundamental STEM principles required for a citizen to understand each grand challenge. However, the courses also emphasize the non-STEM perspectives (e.g., economics, politics, human well-being, externalities) that underlie each grand challenge and argue that creating equitable, sustainable and just solutions to the grand challenges hinges on an understanding of STEM and non-STEM perspectives. Moreover, the authors also consider the multitude of personal perspectives individuals bring to the classroom (e.g., values, beliefs, empathy misconceptions) that influence any stakeholder's ability to engage in fruitful discussions about grand challenge solutions. Discovering Science (LIFE 1002) focuses on the grand challenges of energy and climate. Students attend three one-hour lectures, one two-hour lab and a one-hour discussion each week. Lectures emphasize the STEM and non-STEM principles underlying each grand challenge. Laboratory activities are designed to be interdisciplinary and engage students in inquiry-driven activities to reinforce concepts from lecture and to model how science is conducted. Labs also expose students to the difficulties often associated with scientific studies, the limits of science, and the inherent uncertainties associated with scientific findings. Discussion sessions provide an opportunity for students to explore the complexity of the grand challenges from STEM and non-STEM perspectives, and expose the multitude of personal perspectives an individual might harbor related to each grand challenge. Global Sustainability: Managing Earth's Resources (GEOL 1600) focuses on the energy-water climate nexus with a similar emphasis on STEM and non-STEM perspectives as LIFE 1002. Each week, there are three one hour lectures and a two hour lab. To set the stage for global and systems thinking, the concept of the Anthropocene and planetary boundaries are introduced early in the semester. Lectures focus on a variety of energy-water-climate topics and provide the content background for the labs. Labs are mini-case studies that address a variety of issues set in different global contexts, e.g. groundwater in Bangladesh, coal in China and petroleum in Saudi Arabia. Often the labs cover two weeks with one part covering science and the other economics. Unlike the other two courses, Energy: A Geological Perspective (GEOL 3650), is enrolled with half geology majors and half non-majors, representing almost every college on campus. Its organizational structure is similar to 1600. Labs focus on case studies, each lasting from 3 to 5 weeks, with each week addressing a different aspect of the same issue and social context, e.g. geology, economics, engineering, regulatory and political/social. Students, working in groups, present oral and written reports. Topics range from nuclear power and weapons in Iran to atmospheric emissions and global climate treaties.

Lyford, M.; Myers, J. D.

2012-12-01

459

Magnetic Investigation of Ancestral Puebloan Rio Grande (New Mexico) Glaze Wares  

NASA Astrophysics Data System (ADS)

In geologically heterogeneous regions, such as the Rio Grande, archaeologists typically rely on petrographic analyses to determine ceramic provenance and reconstruct prehistoric trade patterns. Even in these regions, other methods are useful for elucidating trade patterns and/or resolving ambiguities from the petrographic data. Magnetic properties of Ancestral central Rio Grande Puebloan ceramics are being acquired to assess their use in identifying provenance, trade patterns, composition, manufacturing techniques, and firing conditions of ceramics, before and during the early European contact period (ca. A.D. 1325-1700) in New Mexico. Similar to the study of Moskowitz et al. (1987), we use a combination of bulk susceptibility, NRM, ARM, and SIRM intensity, AF response by NRM, ARM, and SIRM, thermal demagnetization of NRM and SIRM, and coercivity of remanence, to study temporal change in Rio Grande glaze wares from four archaeological sites in the northern Rio Grande (approximately 90 sherds per site). Rio Grande glaze wares were widely traded among Ancestral Puebloan groups before and during the European contact period. The ceramics are from the two earliest Spanish administrative centers in New Mexico, San Gabriel del Yungue and Palace of the Governors, and two mission pueblos, Pecos Pueblo and San Marcos Pueblo. Magnetic property data are being compared with petrographic observations to test the effectiveness of several magnetic measurements to identify, among other things, ceramic provenance. A tentative observation in our study is that bulk susceptibility values correlate with different ceramic provenances. The mean bulk susceptibility values for Galisteo Basin ceramics, tempered with augite monzonite and hornblende latite, are significantly higher (5.56E-04 and 4.91E-04 SI mass, respectively) than those for Pajarito Plateau ceramics, tempered with glassy tuff, tuff rocks, and andesite, (1.79E-04, 2.53E-04, and 2.58E-04 SI mass, respectively). This study is the first of its kind on Native American ceramics.

Dyer, J. B.; Geissman, J. W.; Ramenofsky, A. F.

2007-12-01

460

Chemical characteristics of ground-water discharge along the south rim of Grand Canyon in Grand Canyon National Park, Arizona, 2000-2001  

USGS Publications Warehouse

Springs flowing from the south rim of Grand Canyon are an important resource of Grand Canyon National Park, offering refuge to endemic and exotic terrestrial wildlife species and maintaining riparian areas. Population growth on the Coconino Plateau has increased the demand for additional development of ground-water resources, and such development could reduce spring discharge and affect the sustainability of riparian areas within the park. In addition, springs are an important source of drinking water for hikers and are culturally and economically important to Native Americans living in the region. Water samples were collected from May 2000 to September 2001 from 20 spring and creek sites that discharge water from the Redwall-Muav Limestone aquifer along the south rim of Grand Canyon. Sample collection sites were described and samples were analyzed for major ions, nutrients, trace elements, radioactivity, and selected isotopes, and potential sources of ground-water flow to the springs. Rock samples representing the major stratigraphic units of Grand Canyon were collected near the Bright Angel Fault and analyzed for mineralogy, strontium-87/strontium-86, and carbon-13/carbon-12. The chemical composition of water samples collected from a given spring did not vary appreciably over the course of the study. Although water at each spring had a temporally constant composition, the composition was chemically distinct from that of every other spring sampled, indicating spatial variability in the ground-water composition. Most samples had a calcium magnesium bicarbonate composition; a few had a substantial sulfate component. Concentrations of arsenic, nitrate, selenium, uranium, and gross alpha approached or exceeded U.S. Environmental Protection Agency Maximum Contaminant Levels in water discharging from some springs. Oxygen and hydrogen isotopic compositions varied little among samples, and for most sites the isotopic data plot close to the global meteoric water line or below the local meteoric water line. Isotopic enrichment indicates fractionation due to evaporation occurs at some sites. The evaporative process may occur prior to recharge or post-discharge. Flow paths are differentiated between the eastern part of the study area where strontium-87/strontium-86 values for water from springs and creeks are more radiogenic than strontium-87/strontium-86 values for water that discharges from sites farther west. Tritium and carbon isotope analyses indicate that residence time of ground-water discharge from springs and creeks ranges from less than 50 years to about 3,400 years. Water with a residence time of less than 50 years is absent at several sites. Discharge of most springs and creeks is a mixture of younger and older waters.

Monroe, Stephen A.; Antweiler, Ronald C.; Hart, Robert J.; Taylor, Howard E.; Truini, Margot; Rihs, John R.; Felger, Tracey J.

2005-01-01

461

Potential Impacts of Legacy and Current Uranium Mining in the Grand Canyon Region of Northern Arizona  

NASA Astrophysics Data System (ADS)

The Grand Canyon region in Northern Arizona contains high grade uranium resources hosted in geologic features called breccia pipes that represent an important component of the Nation's energy resource base. The exploration and extraction of uranium ore from these deposits poses potential risks to humans and biota of the Grand Canyon watershed. These issues led the Secretary of the Interior to a Record of Decision in January 2012 to withdraw over a million acres of federal lands in the region from mineral entry for the next 20 years. Dissolved uranium and other major ions and trace elements occur naturally in surface water and in groundwater as a result of precipitation infiltrating from the surface to perched water-bearing zones in contact with mineralized breccia pipes or in contact with sandstones with high trace element content, and to underlying regional aquifers. Discharge from these water-bearing zones and aquifers occur as seeps and springs throughout the region and provide valuable habitat and water sources for plants and animals. Runoff and groundwater flow in the Grand Canyon region is also a component of the water supply for over 25 million people in the Southwestern United States. Soil and sediment in the region can naturally contain as much a 5.6 micrograms per gram of uranium and naturally occurring dissolved uranium in groundwater is about 5.0 ?g/L or less, except in proximity to uranium ore bodies where it tends to be greater. The current discharge of dissolved uranium from the Grand Canyon region to Lake Mead have concentrations of 4.0 ?g/L or less resulting in a total annual load of uranium delivered to Lake Mead of about 60 tons per year. Increased amounts of radioactive materials and trace metals on the surface and in groundwater are related to uranium mining activity in the watershed in the 1970s and 1980s. Monitoring and data collection from 2010 to 2012 confirm this legacy impact in some parts of the Grand Canyon watershed, but have yet to identify a link between current mining activity and radiogenic or trace element concentrations in the region. Continued monitoring and research activity by the USGS in cooperation with other Federal land agencies will address the unknowns and uncertainties related to uranium mining activity on affected habitat, biota, and water resources of the Grand Canyon region.

Bills, D. J.

2012-12-01

462

Don't let the river run dry: Efficiency and conservation efforts in the Rio Grande Basin  

E-print Network

Don?t let the river run dry Effi ciency and conservation efforts in the Rio Grande Basin Story by Danielle Supercinski txH2O | pg. 6 An unknown fact to most is that high water demands by agriculture along with the ever-increasing urban... population in the Rio Grande Basin and a lack of available water supplies sometimes cause the river to stop f lowing before it reaches the Gulf of Mexico. The Rio Grande Basin Initiative (RGBI) came into existence to promote efficient use of available...

Supercinski, Danielle

2010-01-01

463

Don't let the river run dry: Efficiency and conservation efforts in the Rio Grande Basin  

E-print Network

Don?t let the river run dry Effi ciency and conservation efforts in the Rio Grande Basin Story by Danielle Supercinski txH2O | pg. 6 An unknown fact to most is that high water demands by agriculture along with the ever-increasing urban... population in the Rio Grande Basin and a lack of available water supplies sometimes cause the river to stop f lowing before it reaches the Gulf of Mexico. The Rio Grande Basin Initiative (RGBI) came into existence to promote efficient use of available...

Supercinski, Danielle

2011-01-01

464

Effects of River Regulation on Aeolian Landscapes, Grand Canyon National Park, USA  

NASA Astrophysics Data System (ADS)

Sediment deposits in the Colorado River corridor include fluvial sandbars and aeolian dune fields, and the fluvial deposits are the primary sediment source for sand in the aeolian dunes. This 7-year study examined the effects of river regulation at Glen Canyon Dam (alteration of flow regime, sediment-supply reduction, and consequent loss of fluvial sandbars) on aeolian landscapes downstream in Grand Canyon National Park. A comparative study was developed between aeolian landscapes in Grand Canyon, Arizona, and Cataract Canyon, Utah, upstream of Glen Canyon Dam and its reservoir (Lake Powell), where hydrology and sediment supply of the Colorado River are affected substantially less by artificial river regulation than occurs in Grand Canyon. Before closure of Glen Canyon Dam in 1963, sediment-rich floods (mean annual peak 2400 m3/s) formed sandbars from which wind moved sand inland to form aeolian dunes. After dam operations reduced the amplitude and frequency of high flows, and eliminated the mainstream fluvial sediment supply, Grand Canyons fluvial sandbars lost open sand area owing to erosion by river flows and the spread of riparian vegetation. Two types of aeolian landscapes now occur in Grand Canyon: (1) modern fluvial sourced, those downwind of post-dam sandbars; and (2) relict fluvial sourced, whose primary sediment source was deposits from pre-dam floods that were larger than any post-dam flows have been. Sediment supply has been reduced to type (1) dune fields because post-dam sandbars are smaller than in the pre-dam era; new sediment supply to type (2) dune fields essentially has been eliminated. Type 1 aeolian landscapes can receive new windblown sand from sandbars formed by controlled floods (1160 m3/s), which occurred in 1996, 2004, and 2008. Type 1 dune fields, being downwind and within 100 m of controlled-flood sandbars, have significantly higher aeolian sand-transport rates, more open sand, and less biologic soil crust than relict type 2 dune fields. Type 1 aeolian landscapes in Grand Canyon have similar properties to the near-natural aeolian landscapes of Cataract Canyon that receive new windblown sand from fluvial sandbars left by annual sediment-rich floods, implying that controlled floods in Grand Canyon are effective at restoring some aeolian landscapes (as well as some fluvial sandbars) to near natural condition. These results provide strong evidence that anthropogenic river regulation affects landscape evolution even above the high water line, because of the link between fluvial deposition and aeolian transport of sediment. Effects of dam operations on aeolian landscapes include not only geomorphic and sedimentary systems, but also biological processes (development of soil crust and associated habitat). It is likely that, if current operations at Glen Canyon Dam (with occasional sediment-rich controlled floods) continue, greater differences in sand mobility, open sand area, biologic soil crust, and possibly vegetation will develop between modern and relict aeolian landscapes in Grand Canyon.

Draut, A. E.

2010-12-01

465

BWR/6 startup and transient tests at Grand Gulf Nuclear Station: Final report  

SciTech Connect

This report documents the results of four plant tests performed during the Grand Gulf Nuclear Station Unit 1 startup test program. The report provides a source of first-of-a-kind BWR/6 data and an interpretation of the major data trends. The data may be applied in the qualification of reactor simulation computer codes. The transient data were recorded through the use of a General Electric Transient Analysis Recording System (GETARS). The detailed data trends are provided in Part I of the proprietary version of this report (2nd tier). Part II of the 2nd tier (proprietary) report entitled, ''Reactor Design Data for Grand Gulf Nuclear Station Unit 1,'' provides the reactor design data which can be used for the construction of a computer model to simulate the transients reported herein. The actual data are available from Electric Power Research Institute. 5 refs., 1 fig., 11 tabs.

Bhandari, B.J.; Crouch, W.D.; Nir, I.; Peng, S.J.; Rao, D.; Sanjines, L.F.; Alesil, G.; Nourse, R.D.

1989-03-01

466

A simple grand canonical approach to compute the vapor pressure of bulk and finite size systems  

NASA Astrophysics Data System (ADS)

In this article we introduce a simple grand canonical screening (GCS) approach to accurately compute vapor pressures from molecular dynamics or Monte Carlo simulations. This procedure entails a screening of chemical potentials using a conventional grand canonical scheme, and therefore it is straightforward to implement for any kind of interface. The scheme is validated against data obtained from Gibbs ensemble simulations for water and argon. Then, it is applied to obtain the vapor pressure of the coarse-grained mW water model, and it is shown that the computed value is in excellent accord with the one formally deduced using statistical thermodynamics arguments. Finally, this methodology is used to calculate the vapor pressure of a water nanodroplet of 94 molecules. Interestingly, the result is in perfect agreement with the one predicted by the Kelvin equation for a homogeneous droplet of that size.

Factorovich, Matas H.; Molinero, Valeria; Scherlis, Damin A.

2014-02-01

467

A simple grand canonical approach to compute the vapor pressure of bulk and finite size systems.  

PubMed

In this article we introduce a simple grand canonical screening (GCS) approach to accurately compute vapor pressures from molecular dynamics or Monte Carlo simulations. This procedure entails a screening of chemical potentials using a conventional grand canonical scheme, and therefore it is straightforward to implement for any kind of interface. The scheme is validated against data obtained from Gibbs ensemble simulations for water and argon. Then, it is applied to obtain the vapor pressure of the coarse-grained mW water model, and it is shown that the computed value is in excellent accord with the one formally deduced using statistical thermodynamics arguments. Finally, this methodology is used to calculate the vapor pressure of a water nanodroplet of 94 molecules. Interestingly, the result is in perfect agreement with the one predicted by the Kelvin equation for a homogeneous droplet of that size. PMID:24527904

Factorovich, Matas H; Molinero, Valeria; Scherlis, Damin A

2014-02-14

468

A simple grand canonical approach to compute the vapor pressure of bulk and finite size systems  

SciTech Connect

In this article we introduce a simple grand canonical screening (GCS) approach to accurately compute vapor pressures from molecular dynamics or Monte Carlo simulations. This procedure entails a screening of chemical potentials using a conventional grand canonical scheme, and therefore it is straightforward to implement for any kind of interface. The scheme is validated against data obtained from Gibbs ensemble simulations for water and argon. Then, it is applied to obtain the vapor pressure of the coarse-grained mW water model, and it is shown that the computed value is in excellent accord with the one formally deduced using statistical thermodynamics arguments. Finally, this methodology is used to calculate the vapor pressure of a water nanodroplet of 94 molecules. Interestingly, the result is in perfect agreement with the one predicted by the Kelvin equation for a homogeneous droplet of that size.

Factorovich, Matas H.; Scherlis, Damin A. [Departamento de Qumica Inorgnica, Analtica y Qumica Fsica/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, Buenos Aires C1428EHA (Argentina)] [Departamento de Qumica Inorgnica, Analtica y Qumica Fsica/INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, Buenos Aires C1428EHA (Argentina); Molinero, Valeria [Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-0850 (United States)] [Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112-0850 (United States)

2014-02-14

469

An experiment to control nonnative fish in the Colorado River, Grand Canyon, Arizona  

USGS Publications Warehouse

The humpback chub (Gila cypha) is an endangered native fish found only in the Colorado River Basin. In Grand Canyon, most humpback chub are found in the Little Colorado River and its confluence with the Colorado River. For decades, however, nonnative rainbow trout (Oncorhynchus mykiss) and brown trout (Salmo trutta), which prey on and compete with native fish, have dominated the Grand Canyon fish community. Between 2003 and 2006, scientists with the U.S. Geological Survey and Arizona Game and Fish Department experimentally removed 23,266 nonnative fish from a 9.4-mile-long reach of the Colorado River near where it joins the Little Colorado River. During the experiment, rainbow trout were reduced by as much as 90% and native fish abundance apparently increased in the reach. Concurrent environmental changes and a decrease in rainbow trout throughout the river make it difficult to determine if the apparent increase in native fish was the result of the experiment.

Coggins, Lewis G., Jr.; Yard, Michael D.

2011-01-01

470

First quantitative test of alluvial stratigraphic models: Southern Rio Grande rift, New Mexico  

NASA Astrophysics Data System (ADS)

Since 1978 the results of computational architectural models have been widely used to aid interpretation of ancient alluvial successions: here we present the first quantitative test of such models. We parameterize variables from field and magnetostratigraphic data collected from the well-exposed Pliocene-Pleistocene Camp Rice and Palomas Formations of the Rio Grande rift in south-central New Mexico. Computational runs establish that the LAB (Leeder, Allen, and Bridge) model correctly predicts the gross architectural patterns of ancestral axial Rio Grande half grabens and full grabens. Convergence of tectonic subsidence rate and mean sedimentation rate over the studied interval suggests that the dynamic basis of the models is correct; i.e., it is the tectonic drawdown of axially supplied sediment that controls the net preservation potential of alluvial successions.

Leeder, Mike R.; Mack, Greg H.; Peakall, Jeff; Salyards, Stephen L.

1996-01-01

471

A stochastic streamflow model of the Platte River at Overton, Odessa, and Grand Island, Nebraska  

USGS Publications Warehouse

A stochastic model is developed to simulate flows for three seasons (September through February, March and April, May through August) at Overton, Odessa, and Grand Island, Nebraska on the Platte River. The model preserves the first and second order moment properties of the historical flow series, including significant autocorrelations within each station and cross-correlations between the stations. Higher order moments are preserved by a transformation technique that allows the residuals from the model to be approximately normal. An algorithm is given for simulation of combined-stations flows, and some simulations are carried out to determine the likelihood of specified flow shortages that could be detrimental to the wildlife habitat in the reach of the Platte River between Overton and Grand Island. (USGS)

Vecchia, A.V., Jr.

1981-01-01

472

Le tetanos chez le grand enfant dans un hpital pdiatrique Yaound, Cameroun  

PubMed Central

Le ttanos est vitable par la vaccination, mais peut survenir en cas d'une immunisation incomplte. Nous avons men une tude sur les dossiers mdicaux des enfants admis pour ttanos entre 2008-2009 au Centre Mre et Enfant de la Fondation Chantal BIYA Yaound. Le but tait d'analyser les circonstances de survenue et les manifestations cliniques du ttanos chez le grand enfant, afin de proposer des stratgies de prvention adaptes au contexte camerounais. Le statut vaccinal tait inconnu chez un patient, les autres (80%) n'avaient pas reu de rappel vaccinal. Les portes d'entre taient les plaies aux membres, l'une tait secondaire une injection mdicamenteuse. Tous ont prsent le ttanos gnralis. Le dcs tait survenu chez un patient. Le ttanos n'est pas rare chez le grand enfant au Cameroun. Il se dgage ainsi la problmatique des rappels vaccinaux. PMID:22514771

Ntoto Njiki Kinkela, Mina; Nguefack, Flicite; Mbassi Awa, Hubert; Chelo, David; Enyama, Dominique; Mbollo Kobela, Marie; Koki Ndombo, Paul Olivier

2012-01-01

473

Mixed-severity fire regime in a high-elevation forest of Grand Canyon, Arizona, USA  

Microsoft Academic Search

Fire regime characteristics of high-elevation forests on the North Rim of the Grand Canyon, Arizona, were reconstructed from fire scar analysis, remote sensing, tree age, and forest structure measurements, a first attempt at detailed reconstruction of the transition from surface to stand-replacing fire patterns in the Southwest. Tree densities and fire-\\/non-fire-initiated groups were highly mixed over the landscape, so distinct

Peter Z. Ful; Joseph E. Crouse; Thomas A. Heinlein; Margaret M. Moore; W. Wallace Covington; Greg Verkamp

2003-01-01

474

Mixed-severity fire regime in a high-elevation forest of Grand Canyon, Arizona, USA  

Microsoft Academic Search

Fire regime characteristics of high-elevation forests on the North Rim of the Grand Canyon, Arizona, were re- constructed from fire scar analysis, remote sensing, tree age, and forest structure measurements, a first attempt at detailed reconstruction of the transition from surface to stand-replacing fire patterns in the Southwest. Tree den- sities and fire-\\/non-fire-initiated groups were highly mixed over the landscape,

Peter Z. Ful; Joseph E. Crouse; Thomas A. Heinlein; Margaret M. Moore; W. Wallace Covington; Greg Verkamp

2003-01-01

475

MITRE Meteor: An Off-Road Autonomous Vehicle for DARPAs Grand Challenge  

Microsoft Academic Search

The MITRE Meteor team fielded an autonomous vehicle that competed in DARPAs 2005 Grand Challenge race. This paper describes\\u000a the teams approach to building its robotic vehicle, the vehicle and components that let the vehicle see and act, and the\\u000a computer software that made the vehicle autonomous. It presents how the team prepared for the race and how their vehicle

Robert Grabowski; Richard Weatherly; Robert Bolling; David Seidel; Michael Shadid; Ann Jones

476

High Level Information Fusion developments, issues, and grand challenges: Fusion 2010 panel discussion  

Microsoft Academic Search

The goal of the High-Level Information Fusion (HLIF) Panel Discussion is to present contemporary HLIF advances and developments to determine unsolved grand challenges and issues. The discussion will address the issues between low-level (signal processing and object state estimation and characterization) and high-level information fusion (control, situational understanding, and relationships to the environment). Specific areas of interest include modeling (situations,

Erik Blasch; James Llinas; Dale Lambert; Pierre Valin; Subrata Das; Chee Chong; Mitch Kokar; Elisa Shahbazian

2010-01-01

477

Microbial Deterioration of Artistic Tiles from the Faade of the Grande Albergo Ausonia & Hungaria (Venice, Italy)  

Microsoft Academic Search

The Grande Albergo Ausonia & Hungaria (Venice Lido, Italy) has an Art Nouveau polychrome ceramic coating on its faade, which\\u000a was restored in 2007. Soon after the conservation treatment, many tiles of the faade decoration showed coloured alterations\\u000a putatively attributed to the presence of microbial communities. To confirm the presence of the biological deposit and the\\u000a stratigraphy of the Hungaria

Lucia Giacomucci; Renzo Bertoncello; Ornella Salvadori; Ilaria Martini; Monica Favaro; Federica Villa; Claudia Sorlini; Francesca Cappitelli

478

Haze in the Grand Canyon: An evaluation of the Winter Haze Intensive Tracer Experiment  

SciTech Connect

The Grand Canyon is one of the most spectacular natural sights on earth. Approximately 4 million visitors travel to Grand Canyon National Park (GCNP) each year to enjoy its majestic geological formations and intensely colored views. However, visibility in GCNP can be impaired by small increases in concentrations of fine suspended particles that scatter and absorb light; the resulting visibility degradation is perceived as haze. Sulfate particles are a major factor in visibility impairment at Grand Canyon in summer and winter. Many wintertime hazes at GCNP are believed to result from the accumulation of emissions from local sources during conditions of air stagnation, which occur more frequently in winter than in summer. In January and February 1987, the National Park Service (NPS) carried out a large-scale experiment known as the Winter Haze Intensive Tracer Experiment (WHITEX) to investigate the causes of wintertime haze in the region of GCNP and Canyonlands National Park. The overall objective of WHITEX was to assess the feasibility of attributing visibility impairment in specific geographic regions to emissions from a single point source. The experiment called for the injection of a tracer, deuterated methane (CD{sub 4}), into one of the stacks of the Navajo Generating Station (NGS), a major coal-fired power plant located 25 km from the GCNP boundary and 110 km northeast of Grand Canyon Village. A network of field stations was established in the vicinity -- mostly to the northeast of GCNP and NGS -- to measure CD{sub 4} concentrations, atmospheric aerosol and optical properties, and other chemical and physical attributes. 19 refs., 3 figs.

Not Available

1990-10-01

479

Phosphate uptake by seston and epilithon in the Grand River, southern Ontario  

Microsoft Academic Search

.Phosphate uptake and release by epilithon and seston were measured in the eutrophic Grand River during May to October over\\u000a three years. Measurements were performed in stirred beakers of freshly collected river water containing seston and, for measurements\\u000a of uptake by epilithon, unglazed ceramic tiles that had been colonized by epilithon in the river. Areal PO43? uptake was dominated by

Lisa Barlow-Busch; Helen M. Baulch; William D. Taylor

2006-01-01

480

Side-scan sonar imaging of the Colorado River, Grand Canyon  

USGS Publications Warehouse

This paper presents data collection methods and side-scan sonar data collected along the Colorado River in Grand Canyon in August and September of 2000. The purpose of the data collection effort was to image the distribution of sand between Glen Canyon Dam and river mile 87.4 before and after the 31,600 cfs flow of September 6-8. The side-scan sonar imaging focused on pools between rapids but included smaller rapids where possible.

Anima, Roberto; Wong, Florence L.; Hogg, David; Galanis, Peter

2007-01-01

481

Variation within the Sagebrush Vegetalion of Grand Teton National Park, Wyoming  

Microsoft Academic Search

The distribution, slrcies composition, and physical soil characteristics are described for four differenr sagebrush codDunities in Grand Teron Narional Park, Wyoming. The communities are chamcrerizeJ, respecrively, by Aiemhia arbuula; A. tidewata; A. tridewata and A. afta:rzla; atd A. tridentati and Pirshia ttidentzta.l'he community dominated by A. atbucala is restricteil to the west side of the Snake River, close to the

Dennis H. Knight

482

Mutual cosideration of $b\\to s?$ and $?\\to e?$ in supersymmetric SO(10) grand unification  

E-print Network

We compare the branching ratios for $b\\rightarrow s\\gamma$ and $\\mu\\rightarrow e\\gamma$ in terms of constraining the parameter space in supersymmetric SO(10) grand unification models where supersymmetry is broken softly near the Planck scale by generationally symmetric operators. We observe two general cases. One with small $\\tan\\beta =2$ and the other one with large $\\tan\\beta$ having third generation Yukawa coupling unification at the GUT scale. \

T. V. Duong; B. Dutta; E. Keith

1995-10-30

483

Preliminary Geophysical Characterization of a CO2Driven Geyser in the Rio Grande Rift, New Mexico  

Microsoft Academic Search

As part of the Summer of Applied Geophysical Experience (SAGE) a preliminary geophysical investigation was conducted in the vicinity of a cold CO2-driven geyser located at Chimay, NM, along the eastern margin of the Rio Grand Rift. This geyser is of interest as a possible analog for CO2 leakage from deep saline-aquifer carbon sequestration projects. Observed water chemistry variations can

D. W. Feucht; K. J. Jensen; C. Kelly; J. C. Ryan; H. Ferriz; N. Kanjorski; J. F. Ferguson; D. K. McPhee; L. Pellerin

2009-01-01

484

Distribution and Movement of Humpback Chub in the Colorado River, Grand Canyon, Based on Recaptures  

Microsoft Academic Search

Markrecapture data from the federally endangered humpback chub Gila cypha in the Colorado River, Grand Canyon, were analyzed from 1989 to 2002 to determine large-scale movement patterns and distribution. A total of 14,674 recaptures from 7,127 unique fish were documented; 87% of the recaptures occurred in the same main-stem river reach or tributary as the original captures, suggesting restricted distribution

Craig P. Paukert; Lewis G. Coggins Jr; Christopher E. Flaccus

2006-01-01

485

Pleistocene geomorphology and geochronology of eastern Grand Canyon: linkages of landscape components during climate changes  

Microsoft Academic Search

We report new mapping, soils, survey, and geochronologic (luminescence, U-series, and cosmogenic-nuclide) data from Pleistocene deposits in the arid setting of eastern Grand Canyon. The result is a stratigraphic framework of inset fill gravels and associated terraces that provide a record of the responses of hillslopes, tributary streams, and the Colorado River to the last ?400kyr of glacialinterglacial climate change.

Matt D. Anders; Joel L. Pederson; Tammy M. Rittenour; Warren D. Sharp; John C. Gosse; Karl E. Karlstrom; Laura J. Crossey; Ronald J. Goble; Lisa Stockli; Guang Yang

2005-01-01

486

Cosmological baryon number domain structure from symmetry-breaking in grand unified field theories  

NASA Technical Reports Server (NTRS)

It is suggested that grand unified field theories with spontaneous symmetry breaking in the very early big-bang can lead more naturally to a baryon symmetric cosmology with a domain structure than to a totally baryon asymmetric cosmology. The symmetry is broken in a randomized manner in causally independent domains, favoring neither a baryon nor an antibaryon excess on a universal scale. Arguments in favor of this cosmology and observational tests are discussed.

Brown, R. W.; Stecker, F. W.

1979-01-01

487

A new view of Baryon symmetric cosmology based on grand unified theories  

NASA Technical Reports Server (NTRS)

Within the framework of grand unified theories, it is shown how spontaneous CP violation leads to a domain structure in the universe with the domains evolving into separate regions of matter and antimatter excesses. Subsequent to exponential horizon growth, this can result in a universe of matter galaxies and antimatter galaxies. Various astrophysical data appear to favor this form of big bang cosmology. Future direct tests for cosmologically significant antimatter are discussed.

Stecker, F. W.

1981-01-01

488

Do beavers promote the invasion of non-native Tamarix in the Grand Canyon riparian zone?  

Microsoft Academic Search

Beavers (Castor canadensis Kuhl) can influence the competitive dynamics of plant species through selective foraging, collection of materials for dam\\u000a creation, and alteration of hydrologic conditions. In the Grand Canyon National Park, the native Salix gooddingii C.R.Ball (Gooddings willow) and Salix exigua Nutt. (coyote willow) are a staple food of beavers. Because Salix competes with the invasive Tamarix ramosissima Ledeb.,

Susan G. Mortenson; Peter J. Weisberg; Barbara E. Ralston

2008-01-01

489

Soil disturbance, flood management, and riparian woody plant establishment in the Rio Grande floodplain  

Microsoft Academic Search

The exotic saltcedar (Tamarix ramosissima) has become the dominant woody plant in many riparian systems in the southwestern United States. We evaluated the effects\\u000a of saltcedar clearing and overbank river flooding on recruitment of cottonwood (Populus fremontii) and saltcedar vegetation in the Rio Grande floodplain of central New Mexico, USA in 1993 and 1994. Overbank flooding coincided\\u000a with the natural

John P. Taylor; David B. Wester; Loren M. Smith

1999-01-01

490

A General Analysis of Corrections to the Standard See-saw Formula in Grand Unified Models  

E-print Network

In realistic grand unified models there are typically extra vectorlike matter multiplets at the GUT scale that are needed to explain the family hierarchy. These contain neutrinos that, when integrated out, can modify the usual neutrino see-saw formula. A general analysis is given. It is noted that such modifications can explain why the neutrinos do not exhibit a strong family hierarchy like the other types of fermions.

S. M. Barr; Bumseok Kyae

2004-07-13

491

Prometheus unbound: quality of government and institutionalised grand corruption in public procurement  

E-print Network

Title: Prometheus unbound: Quality of government and institutionalised grand corruption in public procurement Author: Mihly Fazekas College: Hughes Hall Date: 31/01/2014 This dissertation is submitted for the degree of Doctor... making and implementing policies. Hence, following Weber2 and many contemporary scholars quality of modern governments can be defined as the degree to which the exercise of public authority follows the principle of universalism or impartiality...

Fazekas, Mihly

2014-07-01

492

California Red Scale and its Control in the Lower Rio Grande Valley of Texas.  

E-print Network

-River) Privet (California) Ragweed (Ambrosia artemisiifolia) Rose Salt Cedar (Tamaris) Sago palm bania cannabinn d olive low Moderate I Moderate Heavy Light Heavy Moderate Light Heavy Moderate Heavy Light Light Heavy Moderate Light... were - ant SUI sea appli contl agail insec Th of tl pend; insect The California Red Scale is capable of doing such serious damage to citrus trees in the Lower Rio Grande Valley that its control, is one of the major problems of citrus...

Clark, S. W. (Sherman Wood); Friend, W. H. (William Heartsill)

1932-01-01

493

Estudo etnobotnico em duas comunidades rurais (Limeira e Ribeiro Grande) de Guaratuba (Paran, Brasil)  

Microsoft Academic Search

RESUMO: Realizou-se levantamento etnobotnico em duas comunidades rurais etnicamente distintas (Limeira e Ribeiro Grande) de Guaratuba (Paran, Brasil) para identificar plantas utilizadas na teraputica popular, utilizando-se entrevistas semi-estruturadas (n= 11 e n= 7, respectivamente). Alm de informaes scio-econmicas sobre a populao amostrada, as seguintes informaes sobre o uso de plantas medicinais foram registradas: nome popular, indicao teraputica, parte usada, modo

494

How homogeneous was the Universe at the time of a grand-unified-theory phase transition\\\\?  

Microsoft Academic Search

We study the evolution of a small, causally connected region of the Universe, beginning at very early time. Matter is described by massless, scalar ``electrodynamics'' with conformally invariant coupling between quantum fields and a metric. Gauge symmetry is broken by the Coleman-Weinberg mechanism at the grand-unified-theory scale. The initial state is fixed by the requirement that thermal fluctuations of the

Piotr Amsterdamski

1987-01-01

495

Evaluation of Canal Lining Projects in the Lower Rio Grande Valley  

E-print Network

COLLEGE OF AGRICULTURE AND LIFE SCIENCES TR-353 2009 Evaluation of Canal Lining Projects in the Lower Rio Grande Valley July 2009 By Askar Karimov, Extension Associate Eric Leigh, Extension Associate Guy Fipps...?29,?2009? ? ? ? ? ? By? ? Askar?Karimov? Extension?Associate? ? Eric?Leigh? Extension?Associate? ? Guy?Fipps,?P.E.? Professor?and?Extension?Agricultural?Engineer? ? ? ? ? ? Texas?AgriLife?Extension?Service? Irrigation?Technology?Center? Biological...

Karimov, Askar; Leigh, Eric; Fipps, Guy

496

Cosmological baryon-number domain structure from symmetry breaking in grand unified field theories  

NASA Technical Reports Server (NTRS)

It is suggested that grand unified field theories with spontaneous symmetry breaking in the very early big bang can lead more naturally to a baryon-symmetric cosmology with a domain structure than to a totally baryon-asymmetric cosmology. The symmetry is broken in a randomized manner in causally independent domains, favoring neither a baryon nor an antibaryon excess on a universal scale. Arguments in favor of this cosmology and observational tests are discussed.

Brown, R. W.; Stecker, F. W.

1979-01-01

497

Hypercharge Flux, Exotics, and Anomaly Cancellation in F-theory Grand Unification  

SciTech Connect

We sharpen constraints related to hypercharge flux in F-theory grand unified theories that possess U(1) symmetries and argue that they arise as a consequence of four-dimensional anomaly cancellation. This gives a physical explanation for all restrictions that were observed in spectral cover models while demonstrating that the phenomenological implications for a well-motivated set of models are not tied to any particular formalism.

Marsano, Joseph [Enrico Fermi Institute, University of Chicago, 5640 S Ellis Ave, Chicago, Illinois 60637 (United States)

2011-02-25

498

Monitoring Fine Sediment; Grande Ronde and John Day Rivers, 1998 Annual Report.  

SciTech Connect

Fine sediment levels in spawning substrate have a major effect on salmon survival from egg to smolt. Assessments have consistently concluded that fine sediment is a major problem for salmon in the Grande Ronde and, to a lesser extent, the John Day rivers. It is likely that fine sediment levels in these rivers must be reduced if salmon survival from egg to smolt is to be increased.

Purser, Michael D.; Rhodes, Jonathan J.

1999-01-01

499

Assessing fire regimes on Grand Canyon landscapes with fire-scar and fire-record data  

Microsoft Academic Search

Fire regimes were reconstructed from fire-scarred trees on five large forested study sites (135-810 ha) on the North and South Rims at Grand Canyon National Park. Adequacy of sampling was tested with cumulative sample curves, effectiveness of fire recording on individual trees, tree age data, and the occurrence of 20th Century fires which permitted comparison of fire-scar data with fire-record

Peter Z. FulA; Thomas A. HeinleinB; W. Wallace; Margaret M. MooreC

500

Grand Tour outer planet missions definition phase. Part 2: Minutes of meetings and official correspondence  

NASA Technical Reports Server (NTRS)

A variety of imaging systems proposed for use aboard the Outer Planet Grand Tour Explorer are discussed and evaluated in terms of optimal resolution capability and efficient time utilization. It is pointed out that the planetary and satellite alignments at the time of encounter dictate a high degree of adaptability and versatility in order to provide sufficient image enhancement over earth-based techniques. Data compression methods are also evaluated according to the same criteria.

Belton, M. J. S.; Aksnes, K.; Davies, M. E.; Hartmann, W. K.; Millis, R. L.; Owen, T. C.; Reilly, T. H.; Sagan, C.; Suomi, V. E.; Collins, S. A., Jr.

1972-01-01